diff --git a/Eigen/src/Cholesky/LDLT.h b/Eigen/src/Cholesky/LDLT.h
index 1d0369b..f0664e9 100644
--- a/Eigen/src/Cholesky/LDLT.h
+++ b/Eigen/src/Cholesky/LDLT.h
@@ -13,6 +13,7 @@
 #ifndef EIGEN_LDLT_H
 #define EIGEN_LDLT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Cholesky/LLT.h b/Eigen/src/Cholesky/LLT.h
index 1443eac..55b39f6 100644
--- a/Eigen/src/Cholesky/LLT.h
+++ b/Eigen/src/Cholesky/LLT.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_LLT_H
 #define EIGEN_LLT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Cholesky/LLT_LAPACKE.h b/Eigen/src/Cholesky/LLT_LAPACKE.h
index a32ff23..15eb2b8 100644
--- a/Eigen/src/Cholesky/LLT_LAPACKE.h
+++ b/Eigen/src/Cholesky/LLT_LAPACKE.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_LLT_LAPACKE_H
 #define EIGEN_LLT_LAPACKE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/CholmodSupport/CholmodSupport.h b/Eigen/src/CholmodSupport/CholmodSupport.h
index 91c1cfc..e4e58f3 100644
--- a/Eigen/src/CholmodSupport/CholmodSupport.h
+++ b/Eigen/src/CholmodSupport/CholmodSupport.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CHOLMODSUPPORT_H
 #define EIGEN_CHOLMODSUPPORT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/ArithmeticSequence.h b/Eigen/src/Core/ArithmeticSequence.h
index 81005c5..34689c6 100644
--- a/Eigen/src/Core/ArithmeticSequence.h
+++ b/Eigen/src/Core/ArithmeticSequence.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ARITHMETIC_SEQUENCE_H
 #define EIGEN_ARITHMETIC_SEQUENCE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Array.h b/Eigen/src/Core/Array.h
index d7a5e7a..0055838 100644
--- a/Eigen/src/Core/Array.h
+++ b/Eigen/src/Core/Array.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ARRAY_H
 #define EIGEN_ARRAY_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/ArrayBase.h b/Eigen/src/Core/ArrayBase.h
index 28397e5..83001b2 100644
--- a/Eigen/src/Core/ArrayBase.h
+++ b/Eigen/src/Core/ArrayBase.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ARRAYBASE_H
 #define EIGEN_ARRAYBASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
@@ -91,11 +92,11 @@
 
 #define EIGEN_CURRENT_STORAGE_BASE_CLASS Eigen::ArrayBase
 #define EIGEN_DOC_UNARY_ADDONS(X,Y)
-#   include "../plugins/MatrixCwiseUnaryOps.h"
-#   include "../plugins/ArrayCwiseUnaryOps.h"
-#   include "../plugins/CommonCwiseBinaryOps.h"
-#   include "../plugins/MatrixCwiseBinaryOps.h"
-#   include "../plugins/ArrayCwiseBinaryOps.h"
+#   include "../plugins/MatrixCwiseUnaryOps.inc"
+#   include "../plugins/ArrayCwiseUnaryOps.inc"
+#   include "../plugins/CommonCwiseBinaryOps.inc"
+#   include "../plugins/MatrixCwiseBinaryOps.inc"
+#   include "../plugins/ArrayCwiseBinaryOps.inc"
 #   ifdef EIGEN_ARRAYBASE_PLUGIN
 #     include EIGEN_ARRAYBASE_PLUGIN
 #   endif
diff --git a/Eigen/src/Core/ArrayWrapper.h b/Eigen/src/Core/ArrayWrapper.h
index e65b8fb..986fad8 100644
--- a/Eigen/src/Core/ArrayWrapper.h
+++ b/Eigen/src/Core/ArrayWrapper.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ARRAYWRAPPER_H
 #define EIGEN_ARRAYWRAPPER_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Assign.h b/Eigen/src/Core/Assign.h
index dc716d3..374558c 100644
--- a/Eigen/src/Core/Assign.h
+++ b/Eigen/src/Core/Assign.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_ASSIGN_H
 #define EIGEN_ASSIGN_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/AssignEvaluator.h b/Eigen/src/Core/AssignEvaluator.h
index ec03822..8d8dc2f 100644
--- a/Eigen/src/Core/AssignEvaluator.h
+++ b/Eigen/src/Core/AssignEvaluator.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_ASSIGN_EVALUATOR_H
 #define EIGEN_ASSIGN_EVALUATOR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Assign_MKL.h b/Eigen/src/Core/Assign_MKL.h
index f9b86c8..0fda71c 100644
--- a/Eigen/src/Core/Assign_MKL.h
+++ b/Eigen/src/Core/Assign_MKL.h
@@ -34,6 +34,7 @@
 #ifndef EIGEN_ASSIGN_VML_H
 #define EIGEN_ASSIGN_VML_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/BandMatrix.h b/Eigen/src/Core/BandMatrix.h
index dcb0d13..8955bcd 100644
--- a/Eigen/src/Core/BandMatrix.h
+++ b/Eigen/src/Core/BandMatrix.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_BANDMATRIX_H
 #define EIGEN_BANDMATRIX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Block.h b/Eigen/src/Core/Block.h
index dad2af8..6ef26ca 100644
--- a/Eigen/src/Core/Block.h
+++ b/Eigen/src/Core/Block.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_BLOCK_H
 #define EIGEN_BLOCK_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/CommaInitializer.h b/Eigen/src/Core/CommaInitializer.h
index 7c2eea8..51bf876 100644
--- a/Eigen/src/Core/CommaInitializer.h
+++ b/Eigen/src/Core/CommaInitializer.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_COMMAINITIALIZER_H
 #define EIGEN_COMMAINITIALIZER_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/ConditionEstimator.h b/Eigen/src/Core/ConditionEstimator.h
index 694be8b..7d77f43 100644
--- a/Eigen/src/Core/ConditionEstimator.h
+++ b/Eigen/src/Core/ConditionEstimator.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CONDITIONESTIMATOR_H
 #define EIGEN_CONDITIONESTIMATOR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/CoreEvaluators.h b/Eigen/src/Core/CoreEvaluators.h
index 32371c5..7249f7e 100644
--- a/Eigen/src/Core/CoreEvaluators.h
+++ b/Eigen/src/Core/CoreEvaluators.h
@@ -13,6 +13,7 @@
 #ifndef EIGEN_COREEVALUATORS_H
 #define EIGEN_COREEVALUATORS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/CoreIterators.h b/Eigen/src/Core/CoreIterators.h
index f74568a..d768cbc 100644
--- a/Eigen/src/Core/CoreIterators.h
+++ b/Eigen/src/Core/CoreIterators.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_COREITERATORS_H
 #define EIGEN_COREITERATORS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/CwiseBinaryOp.h b/Eigen/src/Core/CwiseBinaryOp.h
index 21a061a..d5cf5d5 100644
--- a/Eigen/src/Core/CwiseBinaryOp.h
+++ b/Eigen/src/Core/CwiseBinaryOp.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_CWISE_BINARY_OP_H
 #define EIGEN_CWISE_BINARY_OP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/CwiseNullaryOp.h b/Eigen/src/Core/CwiseNullaryOp.h
index b33c052..b246cca 100644
--- a/Eigen/src/Core/CwiseNullaryOp.h
+++ b/Eigen/src/Core/CwiseNullaryOp.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CWISE_NULLARY_OP_H
 #define EIGEN_CWISE_NULLARY_OP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/CwiseTernaryOp.h b/Eigen/src/Core/CwiseTernaryOp.h
index 8d24a48..d8d912f 100644
--- a/Eigen/src/Core/CwiseTernaryOp.h
+++ b/Eigen/src/Core/CwiseTernaryOp.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_CWISE_TERNARY_OP_H
 #define EIGEN_CWISE_TERNARY_OP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/CwiseUnaryOp.h b/Eigen/src/Core/CwiseUnaryOp.h
index ff7d0b9..ec3b2e4 100644
--- a/Eigen/src/Core/CwiseUnaryOp.h
+++ b/Eigen/src/Core/CwiseUnaryOp.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_CWISE_UNARY_OP_H
 #define EIGEN_CWISE_UNARY_OP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/CwiseUnaryView.h b/Eigen/src/Core/CwiseUnaryView.h
index b4539a6..ef1c208 100644
--- a/Eigen/src/Core/CwiseUnaryView.h
+++ b/Eigen/src/Core/CwiseUnaryView.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CWISE_UNARY_VIEW_H
 #define EIGEN_CWISE_UNARY_VIEW_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/DenseBase.h b/Eigen/src/Core/DenseBase.h
index aa04568..3b687a4 100644
--- a/Eigen/src/Core/DenseBase.h
+++ b/Eigen/src/Core/DenseBase.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_DENSEBASE_H
 #define EIGEN_DENSEBASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
@@ -657,10 +658,10 @@
 #define EIGEN_DOC_BLOCK_ADDONS_NOT_INNER_PANEL
 #define EIGEN_DOC_BLOCK_ADDONS_INNER_PANEL_IF(COND)
 #define EIGEN_DOC_UNARY_ADDONS(X,Y)
-#   include "../plugins/CommonCwiseUnaryOps.h"
-#   include "../plugins/BlockMethods.h"
-#   include "../plugins/IndexedViewMethods.h"
-#   include "../plugins/ReshapedMethods.h"
+#   include "../plugins/CommonCwiseUnaryOps.inc"
+#   include "../plugins/BlockMethods.inc"
+#   include "../plugins/IndexedViewMethods.inc"
+#   include "../plugins/ReshapedMethods.inc"
 #   ifdef EIGEN_DENSEBASE_PLUGIN
 #     include EIGEN_DENSEBASE_PLUGIN
 #   endif
diff --git a/Eigen/src/Core/DenseCoeffsBase.h b/Eigen/src/Core/DenseCoeffsBase.h
index 7f0bcf4..93a2965 100644
--- a/Eigen/src/Core/DenseCoeffsBase.h
+++ b/Eigen/src/Core/DenseCoeffsBase.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_DENSECOEFFSBASE_H
 #define EIGEN_DENSECOEFFSBASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/DenseStorage.h b/Eigen/src/Core/DenseStorage.h
index 11205fa..b030378 100644
--- a/Eigen/src/Core/DenseStorage.h
+++ b/Eigen/src/Core/DenseStorage.h
@@ -18,6 +18,7 @@
   #define EIGEN_INTERNAL_DENSE_STORAGE_CTOR_PLUGIN(X)
 #endif
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Diagonal.h b/Eigen/src/Core/Diagonal.h
index 4af17dd..d369486 100644
--- a/Eigen/src/Core/Diagonal.h
+++ b/Eigen/src/Core/Diagonal.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_DIAGONAL_H
 #define EIGEN_DIAGONAL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/DiagonalMatrix.h b/Eigen/src/Core/DiagonalMatrix.h
index 3c389b9..2b745dc 100644
--- a/Eigen/src/Core/DiagonalMatrix.h
+++ b/Eigen/src/Core/DiagonalMatrix.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_DIAGONALMATRIX_H
 #define EIGEN_DIAGONALMATRIX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/DiagonalProduct.h b/Eigen/src/Core/DiagonalProduct.h
index 3cd34ba..aad474d 100644
--- a/Eigen/src/Core/DiagonalProduct.h
+++ b/Eigen/src/Core/DiagonalProduct.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_DIAGONALPRODUCT_H
 #define EIGEN_DIAGONALPRODUCT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/Dot.h b/Eigen/src/Core/Dot.h
index 139e2ca..a8ce736 100644
--- a/Eigen/src/Core/Dot.h
+++ b/Eigen/src/Core/Dot.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_DOT_H
 #define EIGEN_DOT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/EigenBase.h b/Eigen/src/Core/EigenBase.h
index 105488d..251125b 100644
--- a/Eigen/src/Core/EigenBase.h
+++ b/Eigen/src/Core/EigenBase.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_EIGENBASE_H
 #define EIGEN_EIGENBASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/ForceAlignedAccess.h b/Eigen/src/Core/ForceAlignedAccess.h
index b00785e..643ff9b 100644
--- a/Eigen/src/Core/ForceAlignedAccess.h
+++ b/Eigen/src/Core/ForceAlignedAccess.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_FORCEALIGNEDACCESS_H
 #define EIGEN_FORCEALIGNEDACCESS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Fuzzy.h b/Eigen/src/Core/Fuzzy.h
index 1842b47..26b25c2 100644
--- a/Eigen/src/Core/Fuzzy.h
+++ b/Eigen/src/Core/Fuzzy.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_FUZZY_H
 #define EIGEN_FUZZY_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/GeneralProduct.h b/Eigen/src/Core/GeneralProduct.h
index 9f693ba..24a8a79 100644
--- a/Eigen/src/Core/GeneralProduct.h
+++ b/Eigen/src/Core/GeneralProduct.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_GENERAL_PRODUCT_H
 #define EIGEN_GENERAL_PRODUCT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/GenericPacketMath.h b/Eigen/src/Core/GenericPacketMath.h
index f3d607a..8e9902e 100644
--- a/Eigen/src/Core/GenericPacketMath.h
+++ b/Eigen/src/Core/GenericPacketMath.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_GENERIC_PACKET_MATH_H
 #define EIGEN_GENERIC_PACKET_MATH_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/GlobalFunctions.h b/Eigen/src/Core/GlobalFunctions.h
index 30f2a38..9818b86 100644
--- a/Eigen/src/Core/GlobalFunctions.h
+++ b/Eigen/src/Core/GlobalFunctions.h
@@ -51,6 +51,7 @@
     } \
   };
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen
diff --git a/Eigen/src/Core/IO.h b/Eigen/src/Core/IO.h
index 6993729..454cbc3 100644
--- a/Eigen/src/Core/IO.h
+++ b/Eigen/src/Core/IO.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_IO_H
 #define EIGEN_IO_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/IndexedView.h b/Eigen/src/Core/IndexedView.h
index feab3a9..4898e51 100644
--- a/Eigen/src/Core/IndexedView.h
+++ b/Eigen/src/Core/IndexedView.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_INDEXED_VIEW_H
 #define EIGEN_INDEXED_VIEW_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Inverse.h b/Eigen/src/Core/Inverse.h
index 9c70733..54f257e 100644
--- a/Eigen/src/Core/Inverse.h
+++ b/Eigen/src/Core/Inverse.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_INVERSE_H
 #define EIGEN_INVERSE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Map.h b/Eigen/src/Core/Map.h
index 56d1ff8..5544b2d 100644
--- a/Eigen/src/Core/Map.h
+++ b/Eigen/src/Core/Map.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_MAP_H
 #define EIGEN_MAP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/MapBase.h b/Eigen/src/Core/MapBase.h
index 4dda24d..622a780 100644
--- a/Eigen/src/Core/MapBase.h
+++ b/Eigen/src/Core/MapBase.h
@@ -15,6 +15,7 @@
       EIGEN_STATIC_ASSERT((int(internal::evaluator<Derived>::Flags) & LinearAccessBit) || Derived::IsVectorAtCompileTime, \
                           YOU_ARE_TRYING_TO_USE_AN_INDEX_BASED_ACCESSOR_ON_AN_EXPRESSION_THAT_DOES_NOT_SUPPORT_THAT)
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
@@ -193,6 +194,12 @@
     EIGEN_DEVICE_FUNC
     void checkSanity(std::enable_if_t<(internal::traits<T>::Alignment>0),void*> = 0) const
     {
+// Temporary macro to allow scalars to not be properly aligned.  This is while we sort out failures
+// in TensorFlow Lite that are currently relying on this UB.
+#ifndef EIGEN_ALLOW_UNALIGNED_SCALARS
+      // Pointer must be aligned to the Scalar type, otherwise we get UB.
+      eigen_assert((std::uintptr_t(m_data) % alignof(Scalar) == 0) && "data is not scalar-aligned");
+#endif
 #if EIGEN_MAX_ALIGN_BYTES>0
       // innerStride() is not set yet when this function is called, so we optimistically assume the lowest plausible value:
       const Index minInnerStride = InnerStrideAtCompileTime == Dynamic ? 1 : Index(InnerStrideAtCompileTime);
@@ -205,7 +212,12 @@
     template<typename T>
     EIGEN_DEVICE_FUNC
     void checkSanity(std::enable_if_t<internal::traits<T>::Alignment==0,void*> = 0) const
-    {}
+    {
+#ifndef EIGEN_ALLOW_UNALIGNED_SCALARS
+      // Pointer must be aligned to the Scalar type, otherwise we get UB.
+      eigen_assert((std::uintptr_t(m_data) % alignof(Scalar) == 0) && "data is not scalar-aligned");
+#endif
+    }
 
     PointerType m_data;
     const internal::variable_if_dynamic<Index, RowsAtCompileTime> m_rows;
diff --git a/Eigen/src/Core/MathFunctions.h b/Eigen/src/Core/MathFunctions.h
index 5507707..3d801e9 100644
--- a/Eigen/src/Core/MathFunctions.h
+++ b/Eigen/src/Core/MathFunctions.h
@@ -17,6 +17,7 @@
 #define EIGEN_LOG2E 1.442695040888963407359924681001892137426645954152985934135449406931109219L
 #define EIGEN_LN2   0.693147180559945309417232121458176568075500134360255254120680009493393621L
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/MathFunctionsImpl.h b/Eigen/src/Core/MathFunctionsImpl.h
index 86c06b2..5b29fee 100644
--- a/Eigen/src/Core/MathFunctionsImpl.h
+++ b/Eigen/src/Core/MathFunctionsImpl.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_MATHFUNCTIONSIMPL_H
 #define EIGEN_MATHFUNCTIONSIMPL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Matrix.h b/Eigen/src/Core/Matrix.h
index c7747f1..91008f8 100644
--- a/Eigen/src/Core/Matrix.h
+++ b/Eigen/src/Core/Matrix.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_MATRIX_H
 #define EIGEN_MATRIX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/MatrixBase.h b/Eigen/src/Core/MatrixBase.h
index 6eb064b..7a0942f 100644
--- a/Eigen/src/Core/MatrixBase.h
+++ b/Eigen/src/Core/MatrixBase.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_MATRIXBASE_H
 #define EIGEN_MATRIXBASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
@@ -125,9 +126,9 @@
 
 #define EIGEN_CURRENT_STORAGE_BASE_CLASS Eigen::MatrixBase
 #define EIGEN_DOC_UNARY_ADDONS(X,Y)
-#   include "../plugins/CommonCwiseBinaryOps.h"
-#   include "../plugins/MatrixCwiseUnaryOps.h"
-#   include "../plugins/MatrixCwiseBinaryOps.h"
+#   include "../plugins/CommonCwiseBinaryOps.inc"
+#   include "../plugins/MatrixCwiseUnaryOps.inc"
+#   include "../plugins/MatrixCwiseBinaryOps.inc"
 #   ifdef EIGEN_MATRIXBASE_PLUGIN
 #     include EIGEN_MATRIXBASE_PLUGIN
 #   endif
diff --git a/Eigen/src/Core/NestByValue.h b/Eigen/src/Core/NestByValue.h
index 311cb5a..7bcd97e 100644
--- a/Eigen/src/Core/NestByValue.h
+++ b/Eigen/src/Core/NestByValue.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_NESTBYVALUE_H
 #define EIGEN_NESTBYVALUE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/NoAlias.h b/Eigen/src/Core/NoAlias.h
index 09c0aac..8b032ff 100644
--- a/Eigen/src/Core/NoAlias.h
+++ b/Eigen/src/Core/NoAlias.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_NOALIAS_H
 #define EIGEN_NOALIAS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/NumTraits.h b/Eigen/src/Core/NumTraits.h
index f5275d8..a417b4c 100644
--- a/Eigen/src/Core/NumTraits.h
+++ b/Eigen/src/Core/NumTraits.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_NUMTRAITS_H
 #define EIGEN_NUMTRAITS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/PartialReduxEvaluator.h b/Eigen/src/Core/PartialReduxEvaluator.h
index e5d77ec..f7653eb 100644
--- a/Eigen/src/Core/PartialReduxEvaluator.h
+++ b/Eigen/src/Core/PartialReduxEvaluator.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PARTIALREDUX_H
 #define EIGEN_PARTIALREDUX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/PermutationMatrix.h b/Eigen/src/Core/PermutationMatrix.h
index 73a7300..9255465 100644
--- a/Eigen/src/Core/PermutationMatrix.h
+++ b/Eigen/src/Core/PermutationMatrix.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_PERMUTATIONMATRIX_H
 #define EIGEN_PERMUTATIONMATRIX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/PlainObjectBase.h b/Eigen/src/Core/PlainObjectBase.h
index ba6e51d..2c3c585 100644
--- a/Eigen/src/Core/PlainObjectBase.h
+++ b/Eigen/src/Core/PlainObjectBase.h
@@ -22,6 +22,7 @@
 # define EIGEN_INITIALIZE_COEFFS_IF_THAT_OPTION_IS_ENABLED
 #endif
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Product.h b/Eigen/src/Core/Product.h
index 85842d1..107b47e 100644
--- a/Eigen/src/Core/Product.h
+++ b/Eigen/src/Core/Product.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PRODUCT_H
 #define EIGEN_PRODUCT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/ProductEvaluators.h b/Eigen/src/Core/ProductEvaluators.h
index 9da2406..67b0434 100644
--- a/Eigen/src/Core/ProductEvaluators.h
+++ b/Eigen/src/Core/ProductEvaluators.h
@@ -13,6 +13,7 @@
 #ifndef EIGEN_PRODUCTEVALUATORS_H
 #define EIGEN_PRODUCTEVALUATORS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Random.h b/Eigen/src/Core/Random.h
index fab6889..2e9784f 100644
--- a/Eigen/src/Core/Random.h
+++ b/Eigen/src/Core/Random.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_RANDOM_H
 #define EIGEN_RANDOM_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/Redux.h b/Eigen/src/Core/Redux.h
index 8f5f761..9ccbf69 100644
--- a/Eigen/src/Core/Redux.h
+++ b/Eigen/src/Core/Redux.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_REDUX_H
 #define EIGEN_REDUX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/Ref.h b/Eigen/src/Core/Ref.h
index 32d51d2..df43c05 100644
--- a/Eigen/src/Core/Ref.h
+++ b/Eigen/src/Core/Ref.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_REF_H
 #define EIGEN_REF_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Replicate.h b/Eigen/src/Core/Replicate.h
index 4f91bbe..e06eaf2 100644
--- a/Eigen/src/Core/Replicate.h
+++ b/Eigen/src/Core/Replicate.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_REPLICATE_H
 #define EIGEN_REPLICATE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Reshaped.h b/Eigen/src/Core/Reshaped.h
index 508bc25..c118469 100644
--- a/Eigen/src/Core/Reshaped.h
+++ b/Eigen/src/Core/Reshaped.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_RESHAPED_H
 #define EIGEN_RESHAPED_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/ReturnByValue.h b/Eigen/src/Core/ReturnByValue.h
index 9025282..c71e5f5 100644
--- a/Eigen/src/Core/ReturnByValue.h
+++ b/Eigen/src/Core/ReturnByValue.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_RETURNBYVALUE_H
 #define EIGEN_RETURNBYVALUE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Reverse.h b/Eigen/src/Core/Reverse.h
index 97e1d68..78ac4b1 100644
--- a/Eigen/src/Core/Reverse.h
+++ b/Eigen/src/Core/Reverse.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_REVERSE_H
 #define EIGEN_REVERSE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Select.h b/Eigen/src/Core/Select.h
index fdc93c5..9180a5c 100644
--- a/Eigen/src/Core/Select.h
+++ b/Eigen/src/Core/Select.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SELECT_H
 #define EIGEN_SELECT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/SelfAdjointView.h b/Eigen/src/Core/SelfAdjointView.h
index 7a930db..0c8a333 100644
--- a/Eigen/src/Core/SelfAdjointView.h
+++ b/Eigen/src/Core/SelfAdjointView.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SELFADJOINTMATRIX_H
 #define EIGEN_SELFADJOINTMATRIX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/SelfCwiseBinaryOp.h b/Eigen/src/Core/SelfCwiseBinaryOp.h
index 14dbec0..5ed85c7 100644
--- a/Eigen/src/Core/SelfCwiseBinaryOp.h
+++ b/Eigen/src/Core/SelfCwiseBinaryOp.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SELFCWISEBINARYOP_H
 #define EIGEN_SELFCWISEBINARYOP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/SkewSymmetricMatrix3.h b/Eigen/src/Core/SkewSymmetricMatrix3.h
index 5efbc44..6812236 100644
--- a/Eigen/src/Core/SkewSymmetricMatrix3.h
+++ b/Eigen/src/Core/SkewSymmetricMatrix3.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_SKEWSYMMETRICMATRIX3_H
 #define EIGEN_SKEWSYMMETRICMATRIX3_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Solve.h b/Eigen/src/Core/Solve.h
index f77eac9..616dd16 100644
--- a/Eigen/src/Core/Solve.h
+++ b/Eigen/src/Core/Solve.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SOLVE_H
 #define EIGEN_SOLVE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/SolveTriangular.h b/Eigen/src/Core/SolveTriangular.h
index 23df508..b29a7da 100644
--- a/Eigen/src/Core/SolveTriangular.h
+++ b/Eigen/src/Core/SolveTriangular.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SOLVETRIANGULAR_H
 #define EIGEN_SOLVETRIANGULAR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/SolverBase.h b/Eigen/src/Core/SolverBase.h
index 7396e04..f45b519 100644
--- a/Eigen/src/Core/SolverBase.h
+++ b/Eigen/src/Core/SolverBase.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SOLVERBASE_H
 #define EIGEN_SOLVERBASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/StableNorm.h b/Eigen/src/Core/StableNorm.h
index a3bc918..dd36f2c 100644
--- a/Eigen/src/Core/StableNorm.h
+++ b/Eigen/src/Core/StableNorm.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_STABLENORM_H
 #define EIGEN_STABLENORM_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/StlIterators.h b/Eigen/src/Core/StlIterators.h
index d5d3971..445199c 100644
--- a/Eigen/src/Core/StlIterators.h
+++ b/Eigen/src/Core/StlIterators.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_STLITERATORS_H
 #define EIGEN_STLITERATORS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Stride.h b/Eigen/src/Core/Stride.h
index 2832e80..31c7002 100644
--- a/Eigen/src/Core/Stride.h
+++ b/Eigen/src/Core/Stride.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_STRIDE_H
 #define EIGEN_STRIDE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Swap.h b/Eigen/src/Core/Swap.h
index b2e7511..fd67963 100644
--- a/Eigen/src/Core/Swap.h
+++ b/Eigen/src/Core/Swap.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SWAP_H
 #define EIGEN_SWAP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/Transpose.h b/Eigen/src/Core/Transpose.h
index c56318c..89b011b 100644
--- a/Eigen/src/Core/Transpose.h
+++ b/Eigen/src/Core/Transpose.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_TRANSPOSE_H
 #define EIGEN_TRANSPOSE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Transpositions.h b/Eigen/src/Core/Transpositions.h
index 84a9773..f10ca33 100644
--- a/Eigen/src/Core/Transpositions.h
+++ b/Eigen/src/Core/Transpositions.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TRANSPOSITIONS_H
 #define EIGEN_TRANSPOSITIONS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/TriangularMatrix.h b/Eigen/src/Core/TriangularMatrix.h
index c1bd13a..44af65d 100644
--- a/Eigen/src/Core/TriangularMatrix.h
+++ b/Eigen/src/Core/TriangularMatrix.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_TRIANGULARMATRIX_H
 #define EIGEN_TRIANGULARMATRIX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/VectorBlock.h b/Eigen/src/Core/VectorBlock.h
index 2715a1e..64798c3 100644
--- a/Eigen/src/Core/VectorBlock.h
+++ b/Eigen/src/Core/VectorBlock.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_VECTORBLOCK_H
 #define EIGEN_VECTORBLOCK_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/VectorwiseOp.h b/Eigen/src/Core/VectorwiseOp.h
index 737df13..caaaef6 100644
--- a/Eigen/src/Core/VectorwiseOp.h
+++ b/Eigen/src/Core/VectorwiseOp.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_PARTIAL_REDUX_H
 #define EIGEN_PARTIAL_REDUX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/Visitor.h b/Eigen/src/Core/Visitor.h
index 079a37d..6fb00e0 100644
--- a/Eigen/src/Core/Visitor.h
+++ b/Eigen/src/Core/Visitor.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_VISITOR_H
 #define EIGEN_VISITOR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AVX/Complex.h b/Eigen/src/Core/arch/AVX/Complex.h
index cd90496..238edc8 100644
--- a/Eigen/src/Core/arch/AVX/Complex.h
+++ b/Eigen/src/Core/arch/AVX/Complex.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_COMPLEX_AVX_H
 #define EIGEN_COMPLEX_AVX_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AVX/MathFunctions.h b/Eigen/src/Core/arch/AVX/MathFunctions.h
index a3320b8..6e83cfc 100644
--- a/Eigen/src/Core/arch/AVX/MathFunctions.h
+++ b/Eigen/src/Core/arch/AVX/MathFunctions.h
@@ -14,6 +14,7 @@
  * Julien Pommier's sse math library: http://gruntthepeon.free.fr/ssemath/
  */
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AVX/PacketMath.h b/Eigen/src/Core/arch/AVX/PacketMath.h
index 9bbbc13..6f37ba0 100644
--- a/Eigen/src/Core/arch/AVX/PacketMath.h
+++ b/Eigen/src/Core/arch/AVX/PacketMath.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PACKET_MATH_AVX_H
 #define EIGEN_PACKET_MATH_AVX_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AVX/TypeCasting.h b/Eigen/src/Core/arch/AVX/TypeCasting.h
index 9853347..49927b8 100644
--- a/Eigen/src/Core/arch/AVX/TypeCasting.h
+++ b/Eigen/src/Core/arch/AVX/TypeCasting.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TYPE_CASTING_AVX_H
 #define EIGEN_TYPE_CASTING_AVX_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AVX512/Complex.h b/Eigen/src/Core/arch/AVX512/Complex.h
index 0372e95..c484517 100644
--- a/Eigen/src/Core/arch/AVX512/Complex.h
+++ b/Eigen/src/Core/arch/AVX512/Complex.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_COMPLEX_AVX512_H
 #define EIGEN_COMPLEX_AVX512_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AVX512/GemmKernel.h b/Eigen/src/Core/arch/AVX512/GemmKernel.h
index 2d33ca3..7220bfa 100644
--- a/Eigen/src/Core/arch/AVX512/GemmKernel.h
+++ b/Eigen/src/Core/arch/AVX512/GemmKernel.h
@@ -18,6 +18,7 @@
 #include <immintrin.h>
 #include <type_traits>
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 #if !defined(EIGEN_USE_AVX512_GEMM_KERNELS)
diff --git a/Eigen/src/Core/arch/AVX512/MathFunctions.h b/Eigen/src/Core/arch/AVX512/MathFunctions.h
index b327988..08e5fe8 100644
--- a/Eigen/src/Core/arch/AVX512/MathFunctions.h
+++ b/Eigen/src/Core/arch/AVX512/MathFunctions.h
@@ -10,6 +10,7 @@
 #ifndef THIRD_PARTY_EIGEN3_EIGEN_SRC_CORE_ARCH_AVX512_MATHFUNCTIONS_H_
 #define THIRD_PARTY_EIGEN3_EIGEN_SRC_CORE_ARCH_AVX512_MATHFUNCTIONS_H_
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AVX512/PacketMath.h b/Eigen/src/Core/arch/AVX512/PacketMath.h
index 129a68c..c6566a4 100644
--- a/Eigen/src/Core/arch/AVX512/PacketMath.h
+++ b/Eigen/src/Core/arch/AVX512/PacketMath.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PACKET_MATH_AVX512_H
 #define EIGEN_PACKET_MATH_AVX512_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AVX512/PacketMathFP16.h b/Eigen/src/Core/arch/AVX512/PacketMathFP16.h
index 6452416..fc11174 100644
--- a/Eigen/src/Core/arch/AVX512/PacketMathFP16.h
+++ b/Eigen/src/Core/arch/AVX512/PacketMathFP16.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PACKET_MATH_FP16_AVX512_H
 #define EIGEN_PACKET_MATH_FP16_AVX512_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AVX512/TrsmKernel.h b/Eigen/src/Core/arch/AVX512/TrsmKernel.h
index 714afac..f0b1797 100644
--- a/Eigen/src/Core/arch/AVX512/TrsmKernel.h
+++ b/Eigen/src/Core/arch/AVX512/TrsmKernel.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CORE_ARCH_AVX512_TRSM_KERNEL_H
 #define EIGEN_CORE_ARCH_AVX512_TRSM_KERNEL_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 #if !defined(EIGEN_USE_AVX512_TRSM_KERNELS)
diff --git a/Eigen/src/Core/arch/AVX512/TypeCasting.h b/Eigen/src/Core/arch/AVX512/TypeCasting.h
index 02c5628..5053230 100644
--- a/Eigen/src/Core/arch/AVX512/TypeCasting.h
+++ b/Eigen/src/Core/arch/AVX512/TypeCasting.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TYPE_CASTING_AVX512_H
 #define EIGEN_TYPE_CASTING_AVX512_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AltiVec/Complex.h b/Eigen/src/Core/arch/AltiVec/Complex.h
index e24581f..915b01b 100644
--- a/Eigen/src/Core/arch/AltiVec/Complex.h
+++ b/Eigen/src/Core/arch/AltiVec/Complex.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_COMPLEX32_ALTIVEC_H
 #define EIGEN_COMPLEX32_ALTIVEC_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AltiVec/MathFunctions.h b/Eigen/src/Core/arch/AltiVec/MathFunctions.h
index 609e443..a8a2309 100644
--- a/Eigen/src/Core/arch/AltiVec/MathFunctions.h
+++ b/Eigen/src/Core/arch/AltiVec/MathFunctions.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_MATH_FUNCTIONS_ALTIVEC_H
 #define EIGEN_MATH_FUNCTIONS_ALTIVEC_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AltiVec/MatrixProduct.h b/Eigen/src/Core/arch/AltiVec/MatrixProduct.h
index 1c5c048..b232a8f 100644
--- a/Eigen/src/Core/arch/AltiVec/MatrixProduct.h
+++ b/Eigen/src/Core/arch/AltiVec/MatrixProduct.h
@@ -54,6 +54,7 @@
  * - Check StorageOrder on dhs_pack (the innermost second loop seems unvectorized when it could). *
  * - Check the possibility of transposing as GETREAL and GETIMAG when needed.                     *
  **************************************************************************************************/
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AltiVec/MatrixProductCommon.h b/Eigen/src/Core/arch/AltiVec/MatrixProductCommon.h
index daed8c1..fa1755f 100644
--- a/Eigen/src/Core/arch/AltiVec/MatrixProductCommon.h
+++ b/Eigen/src/Core/arch/AltiVec/MatrixProductCommon.h
@@ -9,6 +9,7 @@
 #define USE_PARTIAL_PACKETS
 #endif
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AltiVec/MatrixProductMMA.h b/Eigen/src/Core/arch/AltiVec/MatrixProductMMA.h
index e4013a7..e83cba5 100644
--- a/Eigen/src/Core/arch/AltiVec/MatrixProductMMA.h
+++ b/Eigen/src/Core/arch/AltiVec/MatrixProductMMA.h
@@ -26,6 +26,7 @@
 #endif
 #endif
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 #include "MatrixProductMMAbfloat16.h"
diff --git a/Eigen/src/Core/arch/AltiVec/MatrixVectorProduct.h b/Eigen/src/Core/arch/AltiVec/MatrixVectorProduct.h
index 9170230..66e1088 100644
--- a/Eigen/src/Core/arch/AltiVec/MatrixVectorProduct.h
+++ b/Eigen/src/Core/arch/AltiVec/MatrixVectorProduct.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_MATRIX_VECTOR_PRODUCT_ALTIVEC_H
 #define EIGEN_MATRIX_VECTOR_PRODUCT_ALTIVEC_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 #if defined(__MMA__) && !EIGEN_ALTIVEC_DISABLE_MMA
diff --git a/Eigen/src/Core/arch/AltiVec/PacketMath.h b/Eigen/src/Core/arch/AltiVec/PacketMath.h
index f12dc19..b945b33 100644
--- a/Eigen/src/Core/arch/AltiVec/PacketMath.h
+++ b/Eigen/src/Core/arch/AltiVec/PacketMath.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PACKET_MATH_ALTIVEC_H
 #define EIGEN_PACKET_MATH_ALTIVEC_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/AltiVec/TypeCasting.h b/Eigen/src/Core/arch/AltiVec/TypeCasting.h
index bda63d8..361c69f 100644
--- a/Eigen/src/Core/arch/AltiVec/TypeCasting.h
+++ b/Eigen/src/Core/arch/AltiVec/TypeCasting.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_TYPE_CASTING_ALTIVEC_H
 #define EIGEN_TYPE_CASTING_ALTIVEC_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/Default/BFloat16.h b/Eigen/src/Core/arch/Default/BFloat16.h
index d2137d4..93e8714 100644
--- a/Eigen/src/Core/arch/Default/BFloat16.h
+++ b/Eigen/src/Core/arch/Default/BFloat16.h
@@ -16,6 +16,7 @@
 #ifndef EIGEN_BFLOAT16_H
 #define EIGEN_BFLOAT16_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 #if defined(EIGEN_HAS_HIP_BF16)
diff --git a/Eigen/src/Core/arch/Default/ConjHelper.h b/Eigen/src/Core/arch/Default/ConjHelper.h
index 6b5afe3..84da47f 100644
--- a/Eigen/src/Core/arch/Default/ConjHelper.h
+++ b/Eigen/src/Core/arch/Default/ConjHelper.h
@@ -38,6 +38,7 @@
     }                                                                   \
   };
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/Default/GenericPacketMathFunctions.h b/Eigen/src/Core/arch/Default/GenericPacketMathFunctions.h
index 2739d9a..3d4a2a5 100644
--- a/Eigen/src/Core/arch/Default/GenericPacketMathFunctions.h
+++ b/Eigen/src/Core/arch/Default/GenericPacketMathFunctions.h
@@ -16,6 +16,7 @@
 #ifndef EIGEN_ARCH_GENERIC_PACKET_MATH_FUNCTIONS_H
 #define EIGEN_ARCH_GENERIC_PACKET_MATH_FUNCTIONS_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/Default/GenericPacketMathFunctionsFwd.h b/Eigen/src/Core/arch/Default/GenericPacketMathFunctionsFwd.h
index dc08efa..9e038ab 100644
--- a/Eigen/src/Core/arch/Default/GenericPacketMathFunctionsFwd.h
+++ b/Eigen/src/Core/arch/Default/GenericPacketMathFunctionsFwd.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ARCH_GENERIC_PACKET_MATH_FUNCTIONS_FWD_H
 #define EIGEN_ARCH_GENERIC_PACKET_MATH_FUNCTIONS_FWD_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/Default/Half.h b/Eigen/src/Core/arch/Default/Half.h
index 17ce135..c652318 100644
--- a/Eigen/src/Core/arch/Default/Half.h
+++ b/Eigen/src/Core/arch/Default/Half.h
@@ -36,6 +36,7 @@
 #ifndef EIGEN_HALF_H
 #define EIGEN_HALF_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 #if defined(EIGEN_HAS_GPU_FP16) || defined(EIGEN_HAS_ARM64_FP16_SCALAR_ARITHMETIC)
diff --git a/Eigen/src/Core/arch/GPU/Complex.h b/Eigen/src/Core/arch/GPU/Complex.h
index 4e4cdd1..8a7869c 100644
--- a/Eigen/src/Core/arch/GPU/Complex.h
+++ b/Eigen/src/Core/arch/GPU/Complex.h
@@ -54,6 +54,7 @@
   using Eigen::complex_operator_detail::operator==; \
   using Eigen::complex_operator_detail::operator!=;
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/GPU/MathFunctions.h b/Eigen/src/Core/arch/GPU/MathFunctions.h
index ad61e95..f8191db 100644
--- a/Eigen/src/Core/arch/GPU/MathFunctions.h
+++ b/Eigen/src/Core/arch/GPU/MathFunctions.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_MATH_FUNCTIONS_GPU_H
 #define EIGEN_MATH_FUNCTIONS_GPU_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/GPU/PacketMath.h b/Eigen/src/Core/arch/GPU/PacketMath.h
index a04c563..5c959ed 100644
--- a/Eigen/src/Core/arch/GPU/PacketMath.h
+++ b/Eigen/src/Core/arch/GPU/PacketMath.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PACKET_MATH_GPU_H
 #define EIGEN_PACKET_MATH_GPU_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/GPU/TypeCasting.h b/Eigen/src/Core/arch/GPU/TypeCasting.h
index 6e8ba27..aa89cd2 100644
--- a/Eigen/src/Core/arch/GPU/TypeCasting.h
+++ b/Eigen/src/Core/arch/GPU/TypeCasting.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TYPE_CASTING_GPU_H
 #define EIGEN_TYPE_CASTING_GPU_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/MSA/Complex.h b/Eigen/src/Core/arch/MSA/Complex.h
index 83239c0..b64bd8d 100644
--- a/Eigen/src/Core/arch/MSA/Complex.h
+++ b/Eigen/src/Core/arch/MSA/Complex.h
@@ -15,6 +15,7 @@
 
 #include <iostream>
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/MSA/MathFunctions.h b/Eigen/src/Core/arch/MSA/MathFunctions.h
index 5932041..3e77329 100644
--- a/Eigen/src/Core/arch/MSA/MathFunctions.h
+++ b/Eigen/src/Core/arch/MSA/MathFunctions.h
@@ -26,6 +26,7 @@
 #ifndef EIGEN_MATH_FUNCTIONS_MSA_H
 #define EIGEN_MATH_FUNCTIONS_MSA_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/MSA/PacketMath.h b/Eigen/src/Core/arch/MSA/PacketMath.h
index 4e6bcdf..b36f024 100644
--- a/Eigen/src/Core/arch/MSA/PacketMath.h
+++ b/Eigen/src/Core/arch/MSA/PacketMath.h
@@ -16,6 +16,7 @@
 #include <iostream>
 #include <string>
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/NEON/Complex.h b/Eigen/src/Core/arch/NEON/Complex.h
index 97f4116..98b76da 100644
--- a/Eigen/src/Core/arch/NEON/Complex.h
+++ b/Eigen/src/Core/arch/NEON/Complex.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_COMPLEX_NEON_H
 #define EIGEN_COMPLEX_NEON_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/NEON/GeneralBlockPanelKernel.h b/Eigen/src/Core/arch/NEON/GeneralBlockPanelKernel.h
index ff1646d..48410c5 100644
--- a/Eigen/src/Core/arch/NEON/GeneralBlockPanelKernel.h
+++ b/Eigen/src/Core/arch/NEON/GeneralBlockPanelKernel.h
@@ -1,3 +1,4 @@
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/NEON/MathFunctions.h b/Eigen/src/Core/arch/NEON/MathFunctions.h
index c2a8219..8611810 100644
--- a/Eigen/src/Core/arch/NEON/MathFunctions.h
+++ b/Eigen/src/Core/arch/NEON/MathFunctions.h
@@ -8,6 +8,7 @@
 #ifndef EIGEN_MATH_FUNCTIONS_NEON_H
 #define EIGEN_MATH_FUNCTIONS_NEON_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/NEON/PacketMath.h b/Eigen/src/Core/arch/NEON/PacketMath.h
index 638dea4..adb1342 100644
--- a/Eigen/src/Core/arch/NEON/PacketMath.h
+++ b/Eigen/src/Core/arch/NEON/PacketMath.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_PACKET_MATH_NEON_H
 #define EIGEN_PACKET_MATH_NEON_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/NEON/TypeCasting.h b/Eigen/src/Core/arch/NEON/TypeCasting.h
index 834fcf5..a265e4d 100644
--- a/Eigen/src/Core/arch/NEON/TypeCasting.h
+++ b/Eigen/src/Core/arch/NEON/TypeCasting.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_TYPE_CASTING_NEON_H
 #define EIGEN_TYPE_CASTING_NEON_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/NEON/UnaryFunctors.h b/Eigen/src/Core/arch/NEON/UnaryFunctors.h
index 67f9dcf..09da91c 100644
--- a/Eigen/src/Core/arch/NEON/UnaryFunctors.h
+++ b/Eigen/src/Core/arch/NEON/UnaryFunctors.h
@@ -8,6 +8,7 @@
 #ifndef EIGEN_NEON_UNARY_FUNCTORS_H
 #define EIGEN_NEON_UNARY_FUNCTORS_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/SSE/Complex.h b/Eigen/src/Core/arch/SSE/Complex.h
index 366daa7..d068806 100644
--- a/Eigen/src/Core/arch/SSE/Complex.h
+++ b/Eigen/src/Core/arch/SSE/Complex.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_COMPLEX_SSE_H
 #define EIGEN_COMPLEX_SSE_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/SSE/MathFunctions.h b/Eigen/src/Core/arch/SSE/MathFunctions.h
index f0ddbe6..0f86bcf 100644
--- a/Eigen/src/Core/arch/SSE/MathFunctions.h
+++ b/Eigen/src/Core/arch/SSE/MathFunctions.h
@@ -15,6 +15,7 @@
 #ifndef EIGEN_MATH_FUNCTIONS_SSE_H
 #define EIGEN_MATH_FUNCTIONS_SSE_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/SSE/PacketMath.h b/Eigen/src/Core/arch/SSE/PacketMath.h
index 6240f38..8dd553d 100644
--- a/Eigen/src/Core/arch/SSE/PacketMath.h
+++ b/Eigen/src/Core/arch/SSE/PacketMath.h
@@ -11,6 +11,7 @@
 #define EIGEN_PACKET_MATH_SSE_H
 
 #include <cstdint>
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/SSE/TypeCasting.h b/Eigen/src/Core/arch/SSE/TypeCasting.h
index bb28170..7e3099b 100644
--- a/Eigen/src/Core/arch/SSE/TypeCasting.h
+++ b/Eigen/src/Core/arch/SSE/TypeCasting.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TYPE_CASTING_SSE_H
 #define EIGEN_TYPE_CASTING_SSE_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/SVE/MathFunctions.h b/Eigen/src/Core/arch/SVE/MathFunctions.h
index 8b588b1..b095275 100644
--- a/Eigen/src/Core/arch/SVE/MathFunctions.h
+++ b/Eigen/src/Core/arch/SVE/MathFunctions.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_MATH_FUNCTIONS_SVE_H
 #define EIGEN_MATH_FUNCTIONS_SVE_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/SVE/PacketMath.h b/Eigen/src/Core/arch/SVE/PacketMath.h
index a2f292f..64b710f 100644
--- a/Eigen/src/Core/arch/SVE/PacketMath.h
+++ b/Eigen/src/Core/arch/SVE/PacketMath.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PACKET_MATH_SVE_H
 #define EIGEN_PACKET_MATH_SVE_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen
diff --git a/Eigen/src/Core/arch/SVE/TypeCasting.h b/Eigen/src/Core/arch/SVE/TypeCasting.h
index 1067a41..068ff48 100644
--- a/Eigen/src/Core/arch/SVE/TypeCasting.h
+++ b/Eigen/src/Core/arch/SVE/TypeCasting.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TYPE_CASTING_SVE_H
 #define EIGEN_TYPE_CASTING_SVE_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/SYCL/InteropHeaders.h b/Eigen/src/Core/arch/SYCL/InteropHeaders.h
index 30c4980..ed4edc1 100644
--- a/Eigen/src/Core/arch/SYCL/InteropHeaders.h
+++ b/Eigen/src/Core/arch/SYCL/InteropHeaders.h
@@ -21,6 +21,7 @@
 #ifndef EIGEN_INTEROP_HEADERS_SYCL_H
 #define EIGEN_INTEROP_HEADERS_SYCL_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/SYCL/MathFunctions.h b/Eigen/src/Core/arch/SYCL/MathFunctions.h
index 9eb46bb..bdbb21f 100644
--- a/Eigen/src/Core/arch/SYCL/MathFunctions.h
+++ b/Eigen/src/Core/arch/SYCL/MathFunctions.h
@@ -20,6 +20,7 @@
 
 #ifndef EIGEN_MATH_FUNCTIONS_SYCL_H
 #define EIGEN_MATH_FUNCTIONS_SYCL_H
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/SYCL/PacketMath.h b/Eigen/src/Core/arch/SYCL/PacketMath.h
index 57495a1..fbdcdc0 100644
--- a/Eigen/src/Core/arch/SYCL/PacketMath.h
+++ b/Eigen/src/Core/arch/SYCL/PacketMath.h
@@ -22,6 +22,7 @@
 #define EIGEN_PACKET_MATH_SYCL_H
 #include <type_traits>
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/SYCL/TypeCasting.h b/Eigen/src/Core/arch/SYCL/TypeCasting.h
index f6f057b..9f193c1 100644
--- a/Eigen/src/Core/arch/SYCL/TypeCasting.h
+++ b/Eigen/src/Core/arch/SYCL/TypeCasting.h
@@ -21,6 +21,7 @@
 #ifndef EIGEN_TYPE_CASTING_SYCL_H
 #define EIGEN_TYPE_CASTING_SYCL_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/ZVector/Complex.h b/Eigen/src/Core/arch/ZVector/Complex.h
index 7f22e5c..4d74d3d 100644
--- a/Eigen/src/Core/arch/ZVector/Complex.h
+++ b/Eigen/src/Core/arch/ZVector/Complex.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_COMPLEX32_ZVECTOR_H
 #define EIGEN_COMPLEX32_ZVECTOR_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/ZVector/MathFunctions.h b/Eigen/src/Core/arch/ZVector/MathFunctions.h
index 1f2da26..1b43878 100644
--- a/Eigen/src/Core/arch/ZVector/MathFunctions.h
+++ b/Eigen/src/Core/arch/ZVector/MathFunctions.h
@@ -16,6 +16,7 @@
 #ifndef EIGEN_MATH_FUNCTIONS_ZVECTOR_H
 #define EIGEN_MATH_FUNCTIONS_ZVECTOR_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/arch/ZVector/PacketMath.h b/Eigen/src/Core/arch/ZVector/PacketMath.h
index 892e3a1..07de778 100644
--- a/Eigen/src/Core/arch/ZVector/PacketMath.h
+++ b/Eigen/src/Core/arch/ZVector/PacketMath.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PACKET_MATH_ZVECTOR_H
 #define EIGEN_PACKET_MATH_ZVECTOR_H
 
+// IWYU pragma: private
 #include "../../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/functors/AssignmentFunctors.h b/Eigen/src/Core/functors/AssignmentFunctors.h
index ca08991..8688fbd 100644
--- a/Eigen/src/Core/functors/AssignmentFunctors.h
+++ b/Eigen/src/Core/functors/AssignmentFunctors.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ASSIGNMENT_FUNCTORS_H
 #define EIGEN_ASSIGNMENT_FUNCTORS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/functors/BinaryFunctors.h b/Eigen/src/Core/functors/BinaryFunctors.h
index cd8ae9e..ce8cf1a 100644
--- a/Eigen/src/Core/functors/BinaryFunctors.h
+++ b/Eigen/src/Core/functors/BinaryFunctors.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_BINARY_FUNCTORS_H
 #define EIGEN_BINARY_FUNCTORS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/functors/NullaryFunctors.h b/Eigen/src/Core/functors/NullaryFunctors.h
index 4943d87..fde36be 100644
--- a/Eigen/src/Core/functors/NullaryFunctors.h
+++ b/Eigen/src/Core/functors/NullaryFunctors.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_NULLARY_FUNCTORS_H
 #define EIGEN_NULLARY_FUNCTORS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/functors/StlFunctors.h b/Eigen/src/Core/functors/StlFunctors.h
index b8b842b..8ee1de5 100644
--- a/Eigen/src/Core/functors/StlFunctors.h
+++ b/Eigen/src/Core/functors/StlFunctors.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_STL_FUNCTORS_H
 #define EIGEN_STL_FUNCTORS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/functors/TernaryFunctors.h b/Eigen/src/Core/functors/TernaryFunctors.h
index 8f9492b..859cd19 100644
--- a/Eigen/src/Core/functors/TernaryFunctors.h
+++ b/Eigen/src/Core/functors/TernaryFunctors.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TERNARY_FUNCTORS_H
 #define EIGEN_TERNARY_FUNCTORS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/functors/UnaryFunctors.h b/Eigen/src/Core/functors/UnaryFunctors.h
index fcd81c1..89cd677 100644
--- a/Eigen/src/Core/functors/UnaryFunctors.h
+++ b/Eigen/src/Core/functors/UnaryFunctors.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_UNARY_FUNCTORS_H
 #define EIGEN_UNARY_FUNCTORS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/products/GeneralBlockPanelKernel.h b/Eigen/src/Core/products/GeneralBlockPanelKernel.h
index 862efc6..0a349b0 100644
--- a/Eigen/src/Core/products/GeneralBlockPanelKernel.h
+++ b/Eigen/src/Core/products/GeneralBlockPanelKernel.h
@@ -11,6 +11,7 @@
 #define EIGEN_GENERAL_BLOCK_PANEL_H
 
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/products/GeneralMatrixMatrix.h b/Eigen/src/Core/products/GeneralMatrixMatrix.h
index 9f2a53d..d7632e6 100644
--- a/Eigen/src/Core/products/GeneralMatrixMatrix.h
+++ b/Eigen/src/Core/products/GeneralMatrixMatrix.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_GENERAL_MATRIX_MATRIX_H
 #define EIGEN_GENERAL_MATRIX_MATRIX_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/products/GeneralMatrixMatrixTriangular.h b/Eigen/src/Core/products/GeneralMatrixMatrixTriangular.h
index 716f2ca..03a4107 100644
--- a/Eigen/src/Core/products/GeneralMatrixMatrixTriangular.h
+++ b/Eigen/src/Core/products/GeneralMatrixMatrixTriangular.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_GENERAL_MATRIX_MATRIX_TRIANGULAR_H
 #define EIGEN_GENERAL_MATRIX_MATRIX_TRIANGULAR_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/GeneralMatrixMatrixTriangular_BLAS.h b/Eigen/src/Core/products/GeneralMatrixMatrixTriangular_BLAS.h
index 45ad5da..8379f5b 100644
--- a/Eigen/src/Core/products/GeneralMatrixMatrixTriangular_BLAS.h
+++ b/Eigen/src/Core/products/GeneralMatrixMatrixTriangular_BLAS.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_GENERAL_MATRIX_MATRIX_TRIANGULAR_BLAS_H
 #define EIGEN_GENERAL_MATRIX_MATRIX_TRIANGULAR_BLAS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/products/GeneralMatrixMatrix_BLAS.h b/Eigen/src/Core/products/GeneralMatrixMatrix_BLAS.h
index 490fe67..b40bcec 100644
--- a/Eigen/src/Core/products/GeneralMatrixMatrix_BLAS.h
+++ b/Eigen/src/Core/products/GeneralMatrixMatrix_BLAS.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_GENERAL_MATRIX_MATRIX_BLAS_H
 #define EIGEN_GENERAL_MATRIX_MATRIX_BLAS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/GeneralMatrixVector.h b/Eigen/src/Core/products/GeneralMatrixVector.h
index e4c6f23..475ac85 100644
--- a/Eigen/src/Core/products/GeneralMatrixVector.h
+++ b/Eigen/src/Core/products/GeneralMatrixVector.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_GENERAL_MATRIX_VECTOR_H
 #define EIGEN_GENERAL_MATRIX_VECTOR_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/products/GeneralMatrixVector_BLAS.h b/Eigen/src/Core/products/GeneralMatrixVector_BLAS.h
index f77e2e4..40fef1b 100644
--- a/Eigen/src/Core/products/GeneralMatrixVector_BLAS.h
+++ b/Eigen/src/Core/products/GeneralMatrixVector_BLAS.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_GENERAL_MATRIX_VECTOR_BLAS_H
 #define EIGEN_GENERAL_MATRIX_VECTOR_BLAS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/Parallelizer.h b/Eigen/src/Core/products/Parallelizer.h
index da4affb..3d9cb5f 100644
--- a/Eigen/src/Core/products/Parallelizer.h
+++ b/Eigen/src/Core/products/Parallelizer.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PARALLELIZER_H
 #define EIGEN_PARALLELIZER_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/products/SelfadjointMatrixMatrix.h b/Eigen/src/Core/products/SelfadjointMatrixMatrix.h
index c7bb445..aafc1cd 100644
--- a/Eigen/src/Core/products/SelfadjointMatrixMatrix.h
+++ b/Eigen/src/Core/products/SelfadjointMatrixMatrix.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SELFADJOINT_MATRIX_MATRIX_H
 #define EIGEN_SELFADJOINT_MATRIX_MATRIX_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/SelfadjointMatrixMatrix_BLAS.h b/Eigen/src/Core/products/SelfadjointMatrixMatrix_BLAS.h
index 0e371da..9aa56a2 100644
--- a/Eigen/src/Core/products/SelfadjointMatrixMatrix_BLAS.h
+++ b/Eigen/src/Core/products/SelfadjointMatrixMatrix_BLAS.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_SELFADJOINT_MATRIX_MATRIX_BLAS_H
 #define EIGEN_SELFADJOINT_MATRIX_MATRIX_BLAS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/SelfadjointMatrixVector.h b/Eigen/src/Core/products/SelfadjointMatrixVector.h
index a62b6b5..0aac52e 100644
--- a/Eigen/src/Core/products/SelfadjointMatrixVector.h
+++ b/Eigen/src/Core/products/SelfadjointMatrixVector.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SELFADJOINT_MATRIX_VECTOR_H
 #define EIGEN_SELFADJOINT_MATRIX_VECTOR_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/SelfadjointMatrixVector_BLAS.h b/Eigen/src/Core/products/SelfadjointMatrixVector_BLAS.h
index 99a8ccd..177ea09 100644
--- a/Eigen/src/Core/products/SelfadjointMatrixVector_BLAS.h
+++ b/Eigen/src/Core/products/SelfadjointMatrixVector_BLAS.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_SELFADJOINT_MATRIX_VECTOR_BLAS_H
 #define EIGEN_SELFADJOINT_MATRIX_VECTOR_BLAS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/SelfadjointProduct.h b/Eigen/src/Core/products/SelfadjointProduct.h
index 4cbc1f7..a208a15 100644
--- a/Eigen/src/Core/products/SelfadjointProduct.h
+++ b/Eigen/src/Core/products/SelfadjointProduct.h
@@ -16,6 +16,7 @@
 * It corresponds to the level 3 SYRK and level 2 SYR Blas routines.
 **********************************************************************/
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/SelfadjointRank2Update.h b/Eigen/src/Core/products/SelfadjointRank2Update.h
index fb199ad..f433a21 100644
--- a/Eigen/src/Core/products/SelfadjointRank2Update.h
+++ b/Eigen/src/Core/products/SelfadjointRank2Update.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SELFADJOINTRANK2UPTADE_H
 #define EIGEN_SELFADJOINTRANK2UPTADE_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/TriangularMatrixMatrix.h b/Eigen/src/Core/products/TriangularMatrixMatrix.h
index 80c98dd..22e9375 100644
--- a/Eigen/src/Core/products/TriangularMatrixMatrix.h
+++ b/Eigen/src/Core/products/TriangularMatrixMatrix.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TRIANGULAR_MATRIX_MATRIX_H
 #define EIGEN_TRIANGULAR_MATRIX_MATRIX_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/TriangularMatrixMatrix_BLAS.h b/Eigen/src/Core/products/TriangularMatrixMatrix_BLAS.h
index 1eb57d3..c556a24 100644
--- a/Eigen/src/Core/products/TriangularMatrixMatrix_BLAS.h
+++ b/Eigen/src/Core/products/TriangularMatrixMatrix_BLAS.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_TRIANGULAR_MATRIX_MATRIX_BLAS_H
 #define EIGEN_TRIANGULAR_MATRIX_MATRIX_BLAS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/TriangularMatrixVector.h b/Eigen/src/Core/products/TriangularMatrixVector.h
index ce7550c..d07d367 100644
--- a/Eigen/src/Core/products/TriangularMatrixVector.h
+++ b/Eigen/src/Core/products/TriangularMatrixVector.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TRIANGULARMATRIXVECTOR_H
 #define EIGEN_TRIANGULARMATRIXVECTOR_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/products/TriangularMatrixVector_BLAS.h b/Eigen/src/Core/products/TriangularMatrixVector_BLAS.h
index 7a4d59e..8b4a636 100644
--- a/Eigen/src/Core/products/TriangularMatrixVector_BLAS.h
+++ b/Eigen/src/Core/products/TriangularMatrixVector_BLAS.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_TRIANGULAR_MATRIX_VECTOR_BLAS_H
 #define EIGEN_TRIANGULAR_MATRIX_VECTOR_BLAS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Core/products/TriangularSolverMatrix.h b/Eigen/src/Core/products/TriangularSolverMatrix.h
index 22b4a7f..e21d556 100644
--- a/Eigen/src/Core/products/TriangularSolverMatrix.h
+++ b/Eigen/src/Core/products/TriangularSolverMatrix.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_TRIANGULAR_SOLVER_MATRIX_H
 #define EIGEN_TRIANGULAR_SOLVER_MATRIX_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/products/TriangularSolverMatrix_BLAS.h b/Eigen/src/Core/products/TriangularSolverMatrix_BLAS.h
index 2b63388..10413db 100644
--- a/Eigen/src/Core/products/TriangularSolverMatrix_BLAS.h
+++ b/Eigen/src/Core/products/TriangularSolverMatrix_BLAS.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_TRIANGULAR_SOLVER_MATRIX_BLAS_H
 #define EIGEN_TRIANGULAR_SOLVER_MATRIX_BLAS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/products/TriangularSolverVector.h b/Eigen/src/Core/products/TriangularSolverVector.h
index b8fbb5b..f158a42 100644
--- a/Eigen/src/Core/products/TriangularSolverVector.h
+++ b/Eigen/src/Core/products/TriangularSolverVector.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TRIANGULAR_SOLVER_VECTOR_H
 #define EIGEN_TRIANGULAR_SOLVER_VECTOR_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/BlasUtil.h b/Eigen/src/Core/util/BlasUtil.h
index b0217a9..c56b925 100644
--- a/Eigen/src/Core/util/BlasUtil.h
+++ b/Eigen/src/Core/util/BlasUtil.h
@@ -13,6 +13,7 @@
 // This file contains many lightweight helper classes used to
 // implement and control fast level 2 and level 3 BLAS-like routines.
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/ConfigureVectorization.h b/Eigen/src/Core/util/ConfigureVectorization.h
index 29e43d5..ffd9329 100644
--- a/Eigen/src/Core/util/ConfigureVectorization.h
+++ b/Eigen/src/Core/util/ConfigureVectorization.h
@@ -473,6 +473,7 @@
 
 
 /** \brief Namespace containing all symbols from the %Eigen library. */
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/Constants.h b/Eigen/src/Core/util/Constants.h
index 04f7af4..3496c6c 100644
--- a/Eigen/src/Core/util/Constants.h
+++ b/Eigen/src/Core/util/Constants.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_CONSTANTS_H
 #define EIGEN_CONSTANTS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/ForwardDeclarations.h b/Eigen/src/Core/util/ForwardDeclarations.h
index 8963019..2a4126c 100644
--- a/Eigen/src/Core/util/ForwardDeclarations.h
+++ b/Eigen/src/Core/util/ForwardDeclarations.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_FORWARDDECLARATIONS_H
 #define EIGEN_FORWARDDECLARATIONS_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/IndexedViewHelper.h b/Eigen/src/Core/util/IndexedViewHelper.h
index 19fa45d..29cefd5 100644
--- a/Eigen/src/Core/util/IndexedViewHelper.h
+++ b/Eigen/src/Core/util/IndexedViewHelper.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_INDEXED_VIEW_HELPER_H
 #define EIGEN_INDEXED_VIEW_HELPER_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/IntegralConstant.h b/Eigen/src/Core/util/IntegralConstant.h
index ea275bd..66c031d 100644
--- a/Eigen/src/Core/util/IntegralConstant.h
+++ b/Eigen/src/Core/util/IntegralConstant.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_INTEGRAL_CONSTANT_H
 #define EIGEN_INTEGRAL_CONSTANT_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/MKL_support.h b/Eigen/src/Core/util/MKL_support.h
index 9cf5f6f..9a91352 100644
--- a/Eigen/src/Core/util/MKL_support.h
+++ b/Eigen/src/Core/util/MKL_support.h
@@ -120,6 +120,7 @@
 #include "../../misc/blas.h"
 #endif
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/Macros.h b/Eigen/src/Core/util/Macros.h
index 0835880..d1be315 100644
--- a/Eigen/src/Core/util/Macros.h
+++ b/Eigen/src/Core/util/Macros.h
@@ -10,6 +10,7 @@
 
 #ifndef EIGEN_MACROS_H
 #define EIGEN_MACROS_H
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 //------------------------------------------------------------------------------------------
diff --git a/Eigen/src/Core/util/Memory.h b/Eigen/src/Core/util/Memory.h
index f4217e2..c87a5c3 100644
--- a/Eigen/src/Core/util/Memory.h
+++ b/Eigen/src/Core/util/Memory.h
@@ -78,6 +78,7 @@
 
 #endif
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/Meta.h b/Eigen/src/Core/util/Meta.h
index ba5a563..fe6e5de 100644
--- a/Eigen/src/Core/util/Meta.h
+++ b/Eigen/src/Core/util/Meta.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_META_H
 #define EIGEN_META_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 #if defined(EIGEN_GPU_COMPILE_PHASE)
diff --git a/Eigen/src/Core/util/MoreMeta.h b/Eigen/src/Core/util/MoreMeta.h
index 53a9de6..403d772 100644
--- a/Eigen/src/Core/util/MoreMeta.h
+++ b/Eigen/src/Core/util/MoreMeta.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_MOREMETA_H
 #define EIGEN_MOREMETA_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/ReshapedHelper.h b/Eigen/src/Core/util/ReshapedHelper.h
index 6daea03..6c818f5 100644
--- a/Eigen/src/Core/util/ReshapedHelper.h
+++ b/Eigen/src/Core/util/ReshapedHelper.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_RESHAPED_HELPER_H
 #define EIGEN_RESHAPED_HELPER_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/SymbolicIndex.h b/Eigen/src/Core/util/SymbolicIndex.h
index 3b19185..a129b4d 100644
--- a/Eigen/src/Core/util/SymbolicIndex.h
+++ b/Eigen/src/Core/util/SymbolicIndex.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SYMBOLIC_INDEX_H
 #define EIGEN_SYMBOLIC_INDEX_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Core/util/XprHelper.h b/Eigen/src/Core/util/XprHelper.h
index d8ac1b3..dc2b194 100644
--- a/Eigen/src/Core/util/XprHelper.h
+++ b/Eigen/src/Core/util/XprHelper.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_XPRHELPER_H
 #define EIGEN_XPRHELPER_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Eigenvalues/ComplexEigenSolver.h b/Eigen/src/Eigenvalues/ComplexEigenSolver.h
index 1cfc0ca..bf8bc79 100644
--- a/Eigen/src/Eigenvalues/ComplexEigenSolver.h
+++ b/Eigen/src/Eigenvalues/ComplexEigenSolver.h
@@ -14,6 +14,7 @@
 
 #include "./ComplexSchur.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/ComplexSchur.h b/Eigen/src/Eigenvalues/ComplexSchur.h
index 80a28fb..cdff38a 100644
--- a/Eigen/src/Eigenvalues/ComplexSchur.h
+++ b/Eigen/src/Eigenvalues/ComplexSchur.h
@@ -14,6 +14,7 @@
 
 #include "./HessenbergDecomposition.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/ComplexSchur_LAPACKE.h b/Eigen/src/Eigenvalues/ComplexSchur_LAPACKE.h
index 144eb2a..3f14128 100644
--- a/Eigen/src/Eigenvalues/ComplexSchur_LAPACKE.h
+++ b/Eigen/src/Eigenvalues/ComplexSchur_LAPACKE.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_COMPLEX_SCHUR_LAPACKE_H
 #define EIGEN_COMPLEX_SCHUR_LAPACKE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/EigenSolver.h b/Eigen/src/Eigenvalues/EigenSolver.h
index f6ff140..0419192 100644
--- a/Eigen/src/Eigenvalues/EigenSolver.h
+++ b/Eigen/src/Eigenvalues/EigenSolver.h
@@ -13,6 +13,7 @@
 
 #include "./RealSchur.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/GeneralizedEigenSolver.h b/Eigen/src/Eigenvalues/GeneralizedEigenSolver.h
index d62c411..3f8b136 100644
--- a/Eigen/src/Eigenvalues/GeneralizedEigenSolver.h
+++ b/Eigen/src/Eigenvalues/GeneralizedEigenSolver.h
@@ -14,6 +14,7 @@
 
 #include "./RealQZ.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/GeneralizedSelfAdjointEigenSolver.h b/Eigen/src/Eigenvalues/GeneralizedSelfAdjointEigenSolver.h
index dab66ca..941127b 100644
--- a/Eigen/src/Eigenvalues/GeneralizedSelfAdjointEigenSolver.h
+++ b/Eigen/src/Eigenvalues/GeneralizedSelfAdjointEigenSolver.h
@@ -13,6 +13,7 @@
 
 #include "./Tridiagonalization.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/HessenbergDecomposition.h b/Eigen/src/Eigenvalues/HessenbergDecomposition.h
index fafab99..2f2804d 100644
--- a/Eigen/src/Eigenvalues/HessenbergDecomposition.h
+++ b/Eigen/src/Eigenvalues/HessenbergDecomposition.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_HESSENBERGDECOMPOSITION_H
 #define EIGEN_HESSENBERGDECOMPOSITION_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/MatrixBaseEigenvalues.h b/Eigen/src/Eigenvalues/MatrixBaseEigenvalues.h
index c8df260..3374891 100644
--- a/Eigen/src/Eigenvalues/MatrixBaseEigenvalues.h
+++ b/Eigen/src/Eigenvalues/MatrixBaseEigenvalues.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_MATRIXBASEEIGENVALUES_H
 #define EIGEN_MATRIXBASEEIGENVALUES_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/RealQZ.h b/Eigen/src/Eigenvalues/RealQZ.h
index 545918f..675ced0 100644
--- a/Eigen/src/Eigenvalues/RealQZ.h
+++ b/Eigen/src/Eigenvalues/RealQZ.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_REAL_QZ_H
 #define EIGEN_REAL_QZ_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Eigenvalues/RealSchur.h b/Eigen/src/Eigenvalues/RealSchur.h
index 9817666..12850cb 100644
--- a/Eigen/src/Eigenvalues/RealSchur.h
+++ b/Eigen/src/Eigenvalues/RealSchur.h
@@ -13,6 +13,7 @@
 
 #include "./HessenbergDecomposition.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/RealSchur_LAPACKE.h b/Eigen/src/Eigenvalues/RealSchur_LAPACKE.h
index 0a6ed21..562b8ac 100644
--- a/Eigen/src/Eigenvalues/RealSchur_LAPACKE.h
+++ b/Eigen/src/Eigenvalues/RealSchur_LAPACKE.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_REAL_SCHUR_LAPACKE_H
 #define EIGEN_REAL_SCHUR_LAPACKE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/SelfAdjointEigenSolver.h b/Eigen/src/Eigenvalues/SelfAdjointEigenSolver.h
index 88e05bd..fff9874 100644
--- a/Eigen/src/Eigenvalues/SelfAdjointEigenSolver.h
+++ b/Eigen/src/Eigenvalues/SelfAdjointEigenSolver.h
@@ -13,6 +13,7 @@
 
 #include "./Tridiagonalization.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/SelfAdjointEigenSolver_LAPACKE.h b/Eigen/src/Eigenvalues/SelfAdjointEigenSolver_LAPACKE.h
index b24de67..bfe044b 100644
--- a/Eigen/src/Eigenvalues/SelfAdjointEigenSolver_LAPACKE.h
+++ b/Eigen/src/Eigenvalues/SelfAdjointEigenSolver_LAPACKE.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_SAEIGENSOLVER_LAPACKE_H
 #define EIGEN_SAEIGENSOLVER_LAPACKE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Eigenvalues/Tridiagonalization.h b/Eigen/src/Eigenvalues/Tridiagonalization.h
index 3de9818..e884b70 100644
--- a/Eigen/src/Eigenvalues/Tridiagonalization.h
+++ b/Eigen/src/Eigenvalues/Tridiagonalization.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_TRIDIAGONALIZATION_H
 #define EIGEN_TRIDIAGONALIZATION_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Geometry/AlignedBox.h b/Eigen/src/Geometry/AlignedBox.h
index a824817..3d51fc9 100644
--- a/Eigen/src/Geometry/AlignedBox.h
+++ b/Eigen/src/Geometry/AlignedBox.h
@@ -46,6 +46,7 @@
 #ifndef EIGEN_ALIGNEDBOX_H
 #define EIGEN_ALIGNEDBOX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Geometry/AngleAxis.h b/Eigen/src/Geometry/AngleAxis.h
index c23a908..75cb0ee 100644
--- a/Eigen/src/Geometry/AngleAxis.h
+++ b/Eigen/src/Geometry/AngleAxis.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ANGLEAXIS_H
 #define EIGEN_ANGLEAXIS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Geometry/EulerAngles.h b/Eigen/src/Geometry/EulerAngles.h
index b9cce67..6151c99 100644
--- a/Eigen/src/Geometry/EulerAngles.h
+++ b/Eigen/src/Geometry/EulerAngles.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_EULERANGLES_H
 #define EIGEN_EULERANGLES_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Geometry/Homogeneous.h b/Eigen/src/Geometry/Homogeneous.h
index 538cf83..292530b 100644
--- a/Eigen/src/Geometry/Homogeneous.h
+++ b/Eigen/src/Geometry/Homogeneous.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_HOMOGENEOUS_H
 #define EIGEN_HOMOGENEOUS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Geometry/Hyperplane.h b/Eigen/src/Geometry/Hyperplane.h
index ad6aae9..c669a57 100644
--- a/Eigen/src/Geometry/Hyperplane.h
+++ b/Eigen/src/Geometry/Hyperplane.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_HYPERPLANE_H
 #define EIGEN_HYPERPLANE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Geometry/OrthoMethods.h b/Eigen/src/Geometry/OrthoMethods.h
index fbf020d..2cf8310 100644
--- a/Eigen/src/Geometry/OrthoMethods.h
+++ b/Eigen/src/Geometry/OrthoMethods.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_ORTHOMETHODS_H
 #define EIGEN_ORTHOMETHODS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Geometry/ParametrizedLine.h b/Eigen/src/Geometry/ParametrizedLine.h
index 7576922..029796a 100644
--- a/Eigen/src/Geometry/ParametrizedLine.h
+++ b/Eigen/src/Geometry/ParametrizedLine.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_PARAMETRIZEDLINE_H
 #define EIGEN_PARAMETRIZEDLINE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Geometry/Quaternion.h b/Eigen/src/Geometry/Quaternion.h
index 3413a51..cd29138 100644
--- a/Eigen/src/Geometry/Quaternion.h
+++ b/Eigen/src/Geometry/Quaternion.h
@@ -10,6 +10,7 @@
 
 #ifndef EIGEN_QUATERNION_H
 #define EIGEN_QUATERNION_H
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Geometry/Rotation2D.h b/Eigen/src/Geometry/Rotation2D.h
index aa7f863..32af255 100644
--- a/Eigen/src/Geometry/Rotation2D.h
+++ b/Eigen/src/Geometry/Rotation2D.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ROTATION2D_H
 #define EIGEN_ROTATION2D_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Geometry/RotationBase.h b/Eigen/src/Geometry/RotationBase.h
index f21277f..d685bc7 100644
--- a/Eigen/src/Geometry/RotationBase.h
+++ b/Eigen/src/Geometry/RotationBase.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ROTATIONBASE_H
 #define EIGEN_ROTATIONBASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Geometry/Scaling.h b/Eigen/src/Geometry/Scaling.h
index 8bcdce6..7da2dbe 100644
--- a/Eigen/src/Geometry/Scaling.h
+++ b/Eigen/src/Geometry/Scaling.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SCALING_H
 #define EIGEN_SCALING_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Geometry/Transform.h b/Eigen/src/Geometry/Transform.h
index fd0ae7e..8f64863 100644
--- a/Eigen/src/Geometry/Transform.h
+++ b/Eigen/src/Geometry/Transform.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_TRANSFORM_H
 #define EIGEN_TRANSFORM_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Geometry/Translation.h b/Eigen/src/Geometry/Translation.h
index dd0adba..25435d7 100644
--- a/Eigen/src/Geometry/Translation.h
+++ b/Eigen/src/Geometry/Translation.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_TRANSLATION_H
 #define EIGEN_TRANSLATION_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Geometry/Umeyama.h b/Eigen/src/Geometry/Umeyama.h
index 2da2635..87c89d6 100644
--- a/Eigen/src/Geometry/Umeyama.h
+++ b/Eigen/src/Geometry/Umeyama.h
@@ -16,6 +16,7 @@
 // * Eigen/SVD
 // * Eigen/Array
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Geometry/arch/Geometry_SIMD.h b/Eigen/src/Geometry/arch/Geometry_SIMD.h
index bd91949..d280fbf 100644
--- a/Eigen/src/Geometry/arch/Geometry_SIMD.h
+++ b/Eigen/src/Geometry/arch/Geometry_SIMD.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_GEOMETRY_SIMD_H
 #define EIGEN_GEOMETRY_SIMD_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Householder/BlockHouseholder.h b/Eigen/src/Householder/BlockHouseholder.h
index a5c8095..5896f87 100644
--- a/Eigen/src/Householder/BlockHouseholder.h
+++ b/Eigen/src/Householder/BlockHouseholder.h
@@ -13,6 +13,7 @@
 
 // This file contains some helper function to deal with block householder reflectors
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Householder/Householder.h b/Eigen/src/Householder/Householder.h
index 855b752..0010d1f 100644
--- a/Eigen/src/Householder/Householder.h
+++ b/Eigen/src/Householder/Householder.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_HOUSEHOLDER_H
 #define EIGEN_HOUSEHOLDER_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/Householder/HouseholderSequence.h b/Eigen/src/Householder/HouseholderSequence.h
index 41fef64..132d049 100644
--- a/Eigen/src/Householder/HouseholderSequence.h
+++ b/Eigen/src/Householder/HouseholderSequence.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_HOUSEHOLDER_SEQUENCE_H
 #define EIGEN_HOUSEHOLDER_SEQUENCE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/IterativeLinearSolvers/BasicPreconditioners.h b/Eigen/src/IterativeLinearSolvers/BasicPreconditioners.h
index d2d55b7..6e2122f 100644
--- a/Eigen/src/IterativeLinearSolvers/BasicPreconditioners.h
+++ b/Eigen/src/IterativeLinearSolvers/BasicPreconditioners.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_BASIC_PRECONDITIONERS_H
 #define EIGEN_BASIC_PRECONDITIONERS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/IterativeLinearSolvers/BiCGSTAB.h b/Eigen/src/IterativeLinearSolvers/BiCGSTAB.h
index 76195c7..467d4aa 100644
--- a/Eigen/src/IterativeLinearSolvers/BiCGSTAB.h
+++ b/Eigen/src/IterativeLinearSolvers/BiCGSTAB.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_BICGSTAB_H
 #define EIGEN_BICGSTAB_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/IterativeLinearSolvers/ConjugateGradient.h b/Eigen/src/IterativeLinearSolvers/ConjugateGradient.h
index 5a7dbc7..912ae16 100644
--- a/Eigen/src/IterativeLinearSolvers/ConjugateGradient.h
+++ b/Eigen/src/IterativeLinearSolvers/ConjugateGradient.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CONJUGATE_GRADIENT_H
 #define EIGEN_CONJUGATE_GRADIENT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/IterativeLinearSolvers/IncompleteCholesky.h b/Eigen/src/IterativeLinearSolvers/IncompleteCholesky.h
index 122aea2..1e64504 100644
--- a/Eigen/src/IterativeLinearSolvers/IncompleteCholesky.h
+++ b/Eigen/src/IterativeLinearSolvers/IncompleteCholesky.h
@@ -14,6 +14,7 @@
 #include <vector>
 #include <list>
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/IterativeLinearSolvers/IncompleteLUT.h b/Eigen/src/IterativeLinearSolvers/IncompleteLUT.h
index 44f25fc..6b2a113 100644
--- a/Eigen/src/IterativeLinearSolvers/IncompleteLUT.h
+++ b/Eigen/src/IterativeLinearSolvers/IncompleteLUT.h
@@ -12,6 +12,7 @@
 #define EIGEN_INCOMPLETE_LUT_H
 
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/IterativeLinearSolvers/IterativeSolverBase.h b/Eigen/src/IterativeLinearSolvers/IterativeSolverBase.h
index 49829d0..4287e36 100644
--- a/Eigen/src/IterativeLinearSolvers/IterativeSolverBase.h
+++ b/Eigen/src/IterativeLinearSolvers/IterativeSolverBase.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ITERATIVE_SOLVER_BASE_H
 #define EIGEN_ITERATIVE_SOLVER_BASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/IterativeLinearSolvers/LeastSquareConjugateGradient.h b/Eigen/src/IterativeLinearSolvers/LeastSquareConjugateGradient.h
index a76f3f8..db87a42 100644
--- a/Eigen/src/IterativeLinearSolvers/LeastSquareConjugateGradient.h
+++ b/Eigen/src/IterativeLinearSolvers/LeastSquareConjugateGradient.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_LEAST_SQUARE_CONJUGATE_GRADIENT_H
 #define EIGEN_LEAST_SQUARE_CONJUGATE_GRADIENT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/IterativeLinearSolvers/SolveWithGuess.h b/Eigen/src/IterativeLinearSolvers/SolveWithGuess.h
index bb56db3..d0709f5 100644
--- a/Eigen/src/IterativeLinearSolvers/SolveWithGuess.h
+++ b/Eigen/src/IterativeLinearSolvers/SolveWithGuess.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SOLVEWITHGUESS_H
 #define EIGEN_SOLVEWITHGUESS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/Jacobi/Jacobi.h b/Eigen/src/Jacobi/Jacobi.h
index 5d0f276..efa57eb 100644
--- a/Eigen/src/Jacobi/Jacobi.h
+++ b/Eigen/src/Jacobi/Jacobi.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_JACOBI_H
 #define EIGEN_JACOBI_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/KLUSupport/KLUSupport.h b/Eigen/src/KLUSupport/KLUSupport.h
index bfe2f66..0c6c240 100644
--- a/Eigen/src/KLUSupport/KLUSupport.h
+++ b/Eigen/src/KLUSupport/KLUSupport.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_KLUSUPPORT_H
 #define EIGEN_KLUSUPPORT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/LU/Determinant.h b/Eigen/src/LU/Determinant.h
index 80e695d..3d26afa 100644
--- a/Eigen/src/LU/Determinant.h
+++ b/Eigen/src/LU/Determinant.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_DETERMINANT_H
 #define EIGEN_DETERMINANT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/LU/FullPivLU.h b/Eigen/src/LU/FullPivLU.h
index d02dcc1..e3cd8cd 100644
--- a/Eigen/src/LU/FullPivLU.h
+++ b/Eigen/src/LU/FullPivLU.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_LU_H
 #define EIGEN_LU_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/LU/InverseImpl.h b/Eigen/src/LU/InverseImpl.h
index bcfe703..19d540c 100644
--- a/Eigen/src/LU/InverseImpl.h
+++ b/Eigen/src/LU/InverseImpl.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_INVERSE_IMPL_H
 #define EIGEN_INVERSE_IMPL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/LU/PartialPivLU.h b/Eigen/src/LU/PartialPivLU.h
index bee7437..2301ebd 100644
--- a/Eigen/src/LU/PartialPivLU.h
+++ b/Eigen/src/LU/PartialPivLU.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_PARTIALLU_H
 #define EIGEN_PARTIALLU_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/LU/PartialPivLU_LAPACKE.h b/Eigen/src/LU/PartialPivLU_LAPACKE.h
index b636442..8501b61 100644
--- a/Eigen/src/LU/PartialPivLU_LAPACKE.h
+++ b/Eigen/src/LU/PartialPivLU_LAPACKE.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_PARTIALLU_LAPACK_H
 #define EIGEN_PARTIALLU_LAPACK_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/LU/arch/InverseSize4.h b/Eigen/src/LU/arch/InverseSize4.h
index 25f4601..2cd92b5 100644
--- a/Eigen/src/LU/arch/InverseSize4.h
+++ b/Eigen/src/LU/arch/InverseSize4.h
@@ -35,6 +35,7 @@
 #ifndef EIGEN_INVERSE_SIZE_4_H
 #define EIGEN_INVERSE_SIZE_4_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 #if EIGEN_COMP_GNUC_STRICT
diff --git a/Eigen/src/MetisSupport/MetisSupport.h b/Eigen/src/MetisSupport/MetisSupport.h
index c5e143b..93fe31b 100644
--- a/Eigen/src/MetisSupport/MetisSupport.h
+++ b/Eigen/src/MetisSupport/MetisSupport.h
@@ -9,6 +9,7 @@
 #ifndef METIS_SUPPORT_H
 #define METIS_SUPPORT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/OrderingMethods/Amd.h b/Eigen/src/OrderingMethods/Amd.h
index 5bd531c..0d01348 100644
--- a/Eigen/src/OrderingMethods/Amd.h
+++ b/Eigen/src/OrderingMethods/Amd.h
@@ -21,6 +21,7 @@
 #ifndef EIGEN_SPARSE_AMD_H
 #define EIGEN_SPARSE_AMD_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/OrderingMethods/Ordering.h b/Eigen/src/OrderingMethods/Ordering.h
index 5cc4a85..0e06a05 100644
--- a/Eigen/src/OrderingMethods/Ordering.h
+++ b/Eigen/src/OrderingMethods/Ordering.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_ORDERING_H
 #define EIGEN_ORDERING_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/PaStiXSupport/PaStiXSupport.h b/Eigen/src/PaStiXSupport/PaStiXSupport.h
index d3126b1..3a067d5 100644
--- a/Eigen/src/PaStiXSupport/PaStiXSupport.h
+++ b/Eigen/src/PaStiXSupport/PaStiXSupport.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_PASTIXSUPPORT_H
 #define EIGEN_PASTIXSUPPORT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/PardisoSupport/PardisoSupport.h b/Eigen/src/PardisoSupport/PardisoSupport.h
index e9815e6..ced7595 100644
--- a/Eigen/src/PardisoSupport/PardisoSupport.h
+++ b/Eigen/src/PardisoSupport/PardisoSupport.h
@@ -32,6 +32,7 @@
 #ifndef EIGEN_PARDISOSUPPORT_H
 #define EIGEN_PARDISOSUPPORT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/QR/ColPivHouseholderQR.h b/Eigen/src/QR/ColPivHouseholderQR.h
index 6855893..0f48683 100644
--- a/Eigen/src/QR/ColPivHouseholderQR.h
+++ b/Eigen/src/QR/ColPivHouseholderQR.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_COLPIVOTINGHOUSEHOLDERQR_H
 #define EIGEN_COLPIVOTINGHOUSEHOLDERQR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/QR/ColPivHouseholderQR_LAPACKE.h b/Eigen/src/QR/ColPivHouseholderQR_LAPACKE.h
index 6861ff1..8745ae4 100644
--- a/Eigen/src/QR/ColPivHouseholderQR_LAPACKE.h
+++ b/Eigen/src/QR/ColPivHouseholderQR_LAPACKE.h
@@ -34,6 +34,7 @@
 #ifndef EIGEN_COLPIVOTINGHOUSEHOLDERQR_LAPACKE_H
 #define EIGEN_COLPIVOTINGHOUSEHOLDERQR_LAPACKE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/QR/CompleteOrthogonalDecomposition.h b/Eigen/src/QR/CompleteOrthogonalDecomposition.h
index 171e601..3053286 100644
--- a/Eigen/src/QR/CompleteOrthogonalDecomposition.h
+++ b/Eigen/src/QR/CompleteOrthogonalDecomposition.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_COMPLETEORTHOGONALDECOMPOSITION_H
 #define EIGEN_COMPLETEORTHOGONALDECOMPOSITION_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/QR/FullPivHouseholderQR.h b/Eigen/src/QR/FullPivHouseholderQR.h
index 588f917..89e546c 100644
--- a/Eigen/src/QR/FullPivHouseholderQR.h
+++ b/Eigen/src/QR/FullPivHouseholderQR.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_FULLPIVOTINGHOUSEHOLDERQR_H
 #define EIGEN_FULLPIVOTINGHOUSEHOLDERQR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/QR/HouseholderQR.h b/Eigen/src/QR/HouseholderQR.h
index abfefd1..68c69da 100644
--- a/Eigen/src/QR/HouseholderQR.h
+++ b/Eigen/src/QR/HouseholderQR.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_QR_H
 #define EIGEN_QR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/QR/HouseholderQR_LAPACKE.h b/Eigen/src/QR/HouseholderQR_LAPACKE.h
index 57c2f6a..0bd6a2b 100644
--- a/Eigen/src/QR/HouseholderQR_LAPACKE.h
+++ b/Eigen/src/QR/HouseholderQR_LAPACKE.h
@@ -34,6 +34,7 @@
 #ifndef EIGEN_QR_LAPACKE_H
 #define EIGEN_QR_LAPACKE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SPQRSupport/SuiteSparseQRSupport.h b/Eigen/src/SPQRSupport/SuiteSparseQRSupport.h
index 36e8ead..7256393 100644
--- a/Eigen/src/SPQRSupport/SuiteSparseQRSupport.h
+++ b/Eigen/src/SPQRSupport/SuiteSparseQRSupport.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_SUITESPARSEQRSUPPORT_H
 #define EIGEN_SUITESPARSEQRSUPPORT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SVD/BDCSVD.h b/Eigen/src/SVD/BDCSVD.h
index bb1d3db..a4ba8a7 100644
--- a/Eigen/src/SVD/BDCSVD.h
+++ b/Eigen/src/SVD/BDCSVD.h
@@ -27,6 +27,7 @@
 #define eigen_internal_assert(X) assert(X);
 #endif
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 #ifdef EIGEN_BDCSVD_DEBUG_VERBOSE
diff --git a/Eigen/src/SVD/JacobiSVD.h b/Eigen/src/SVD/JacobiSVD.h
index 5fdb3dc..6b77d28 100644
--- a/Eigen/src/SVD/JacobiSVD.h
+++ b/Eigen/src/SVD/JacobiSVD.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_JACOBISVD_H
 #define EIGEN_JACOBISVD_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SVD/JacobiSVD_LAPACKE.h b/Eigen/src/SVD/JacobiSVD_LAPACKE.h
index 11247b1..12c8614 100644
--- a/Eigen/src/SVD/JacobiSVD_LAPACKE.h
+++ b/Eigen/src/SVD/JacobiSVD_LAPACKE.h
@@ -33,6 +33,7 @@
 #ifndef EIGEN_JACOBISVD_LAPACKE_H
 #define EIGEN_JACOBISVD_LAPACKE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SVD/SVDBase.h b/Eigen/src/SVD/SVDBase.h
index cb018cc..f6911cb 100644
--- a/Eigen/src/SVD/SVDBase.h
+++ b/Eigen/src/SVD/SVDBase.h
@@ -16,6 +16,7 @@
 #ifndef EIGEN_SVDBASE_H
 #define EIGEN_SVDBASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SVD/UpperBidiagonalization.h b/Eigen/src/SVD/UpperBidiagonalization.h
index b51bee3..ec2fc53 100644
--- a/Eigen/src/SVD/UpperBidiagonalization.h
+++ b/Eigen/src/SVD/UpperBidiagonalization.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_BIDIAGONALIZATION_H
 #define EIGEN_BIDIAGONALIZATION_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCholesky/SimplicialCholesky.h b/Eigen/src/SparseCholesky/SimplicialCholesky.h
index d90ca13..059066c 100644
--- a/Eigen/src/SparseCholesky/SimplicialCholesky.h
+++ b/Eigen/src/SparseCholesky/SimplicialCholesky.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SIMPLICIAL_CHOLESKY_H
 #define EIGEN_SIMPLICIAL_CHOLESKY_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCholesky/SimplicialCholesky_impl.h b/Eigen/src/SparseCholesky/SimplicialCholesky_impl.h
index 3106c9b..086e0f7 100644
--- a/Eigen/src/SparseCholesky/SimplicialCholesky_impl.h
+++ b/Eigen/src/SparseCholesky/SimplicialCholesky_impl.h
@@ -20,6 +20,7 @@
 #ifndef EIGEN_SIMPLICIAL_CHOLESKY_IMPL_H
 #define EIGEN_SIMPLICIAL_CHOLESKY_IMPL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseCore/AmbiVector.h b/Eigen/src/SparseCore/AmbiVector.h
index 594e91d..a663ff6 100644
--- a/Eigen/src/SparseCore/AmbiVector.h
+++ b/Eigen/src/SparseCore/AmbiVector.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_AMBIVECTOR_H
 #define EIGEN_AMBIVECTOR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/CompressedStorage.h b/Eigen/src/SparseCore/CompressedStorage.h
index 6b0fb4b..f941299 100644
--- a/Eigen/src/SparseCore/CompressedStorage.h
+++ b/Eigen/src/SparseCore/CompressedStorage.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_COMPRESSED_STORAGE_H
 #define EIGEN_COMPRESSED_STORAGE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/ConservativeSparseSparseProduct.h b/Eigen/src/SparseCore/ConservativeSparseSparseProduct.h
index f852493..44721ac 100644
--- a/Eigen/src/SparseCore/ConservativeSparseSparseProduct.h
+++ b/Eigen/src/SparseCore/ConservativeSparseSparseProduct.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CONSERVATIVESPARSESPARSEPRODUCT_H
 #define EIGEN_CONSERVATIVESPARSESPARSEPRODUCT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseCore/SparseAssign.h b/Eigen/src/SparseCore/SparseAssign.h
index f8ab457..e6fd714 100644
--- a/Eigen/src/SparseCore/SparseAssign.h
+++ b/Eigen/src/SparseCore/SparseAssign.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSEASSIGN_H
 #define EIGEN_SPARSEASSIGN_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseBlock.h b/Eigen/src/SparseCore/SparseBlock.h
index b3fc859..d145804 100644
--- a/Eigen/src/SparseCore/SparseBlock.h
+++ b/Eigen/src/SparseCore/SparseBlock.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSE_BLOCK_H
 #define EIGEN_SPARSE_BLOCK_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseCore/SparseColEtree.h b/Eigen/src/SparseCore/SparseColEtree.h
index ff32458..7cead04 100644
--- a/Eigen/src/SparseCore/SparseColEtree.h
+++ b/Eigen/src/SparseCore/SparseColEtree.h
@@ -31,6 +31,7 @@
 #ifndef SPARSE_COLETREE_H
 #define SPARSE_COLETREE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseCore/SparseCompressedBase.h b/Eigen/src/SparseCore/SparseCompressedBase.h
index c1aa426..c28cc95 100644
--- a/Eigen/src/SparseCore/SparseCompressedBase.h
+++ b/Eigen/src/SparseCore/SparseCompressedBase.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSE_COMPRESSED_BASE_H
 #define EIGEN_SPARSE_COMPRESSED_BASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseCwiseBinaryOp.h b/Eigen/src/SparseCore/SparseCwiseBinaryOp.h
index 3aea5ec..92be6d2 100644
--- a/Eigen/src/SparseCore/SparseCwiseBinaryOp.h
+++ b/Eigen/src/SparseCore/SparseCwiseBinaryOp.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSE_CWISE_BINARY_OP_H
 #define EIGEN_SPARSE_CWISE_BINARY_OP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseCwiseUnaryOp.h b/Eigen/src/SparseCore/SparseCwiseUnaryOp.h
index 6f48fa7..974b22f 100644
--- a/Eigen/src/SparseCore/SparseCwiseUnaryOp.h
+++ b/Eigen/src/SparseCore/SparseCwiseUnaryOp.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSE_CWISE_UNARY_OP_H
 #define EIGEN_SPARSE_CWISE_UNARY_OP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseDenseProduct.h b/Eigen/src/SparseCore/SparseDenseProduct.h
index 9c0c531..6c3cd29 100644
--- a/Eigen/src/SparseCore/SparseDenseProduct.h
+++ b/Eigen/src/SparseCore/SparseDenseProduct.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSEDENSEPRODUCT_H
 #define EIGEN_SPARSEDENSEPRODUCT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseDiagonalProduct.h b/Eigen/src/SparseCore/SparseDiagonalProduct.h
index 4dc9502..49bc851 100644
--- a/Eigen/src/SparseCore/SparseDiagonalProduct.h
+++ b/Eigen/src/SparseCore/SparseDiagonalProduct.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSE_DIAGONAL_PRODUCT_H
 #define EIGEN_SPARSE_DIAGONAL_PRODUCT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseDot.h b/Eigen/src/SparseCore/SparseDot.h
index a45ecfa..826c09b 100644
--- a/Eigen/src/SparseCore/SparseDot.h
+++ b/Eigen/src/SparseCore/SparseDot.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSE_DOT_H
 #define EIGEN_SPARSE_DOT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseFuzzy.h b/Eigen/src/SparseCore/SparseFuzzy.h
index dcfdde9..7ca4243 100644
--- a/Eigen/src/SparseCore/SparseFuzzy.h
+++ b/Eigen/src/SparseCore/SparseFuzzy.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSE_FUZZY_H
 #define EIGEN_SPARSE_FUZZY_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseCore/SparseMap.h b/Eigen/src/SparseCore/SparseMap.h
index 0ee3813..f2923a3 100644
--- a/Eigen/src/SparseCore/SparseMap.h
+++ b/Eigen/src/SparseCore/SparseMap.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSE_MAP_H
 #define EIGEN_SPARSE_MAP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseCore/SparseMatrix.h b/Eigen/src/SparseCore/SparseMatrix.h
index 855a5a6..8537c79 100644
--- a/Eigen/src/SparseCore/SparseMatrix.h
+++ b/Eigen/src/SparseCore/SparseMatrix.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSEMATRIX_H
 #define EIGEN_SPARSEMATRIX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseMatrixBase.h b/Eigen/src/SparseCore/SparseMatrixBase.h
index dc78c2e..f96d2a7 100644
--- a/Eigen/src/SparseCore/SparseMatrixBase.h
+++ b/Eigen/src/SparseCore/SparseMatrixBase.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSEMATRIXBASE_H
 #define EIGEN_SPARSEMATRIXBASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
@@ -159,11 +160,11 @@
 #define EIGEN_DOC_BLOCK_ADDONS_NOT_INNER_PANEL
 #define EIGEN_DOC_BLOCK_ADDONS_INNER_PANEL_IF(COND)
 #endif
-#   include "../plugins/CommonCwiseUnaryOps.h"
-#   include "../plugins/CommonCwiseBinaryOps.h"
-#   include "../plugins/MatrixCwiseUnaryOps.h"
-#   include "../plugins/MatrixCwiseBinaryOps.h"
-#   include "../plugins/BlockMethods.h"
+#   include "../plugins/CommonCwiseUnaryOps.inc"
+#   include "../plugins/CommonCwiseBinaryOps.inc"
+#   include "../plugins/MatrixCwiseUnaryOps.inc"
+#   include "../plugins/MatrixCwiseBinaryOps.inc"
+#   include "../plugins/BlockMethods.inc"
 #   ifdef EIGEN_SPARSEMATRIXBASE_PLUGIN
 #     include EIGEN_SPARSEMATRIXBASE_PLUGIN
 #   endif
diff --git a/Eigen/src/SparseCore/SparsePermutation.h b/Eigen/src/SparseCore/SparsePermutation.h
index 7e402cc..2ae9c15 100644
--- a/Eigen/src/SparseCore/SparsePermutation.h
+++ b/Eigen/src/SparseCore/SparsePermutation.h
@@ -12,6 +12,7 @@
 
 // This file implements sparse * permutation products
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseProduct.h b/Eigen/src/SparseCore/SparseProduct.h
index 85a8a10..64a63a3 100644
--- a/Eigen/src/SparseCore/SparseProduct.h
+++ b/Eigen/src/SparseCore/SparseProduct.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSEPRODUCT_H
 #define EIGEN_SPARSEPRODUCT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseRedux.h b/Eigen/src/SparseCore/SparseRedux.h
index 6b14c58..e39a944 100644
--- a/Eigen/src/SparseCore/SparseRedux.h
+++ b/Eigen/src/SparseCore/SparseRedux.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSEREDUX_H
 #define EIGEN_SPARSEREDUX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseRef.h b/Eigen/src/SparseCore/SparseRef.h
index 9e69d93..a69ad01 100644
--- a/Eigen/src/SparseCore/SparseRef.h
+++ b/Eigen/src/SparseCore/SparseRef.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSE_REF_H
 #define EIGEN_SPARSE_REF_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseCore/SparseSelfAdjointView.h b/Eigen/src/SparseCore/SparseSelfAdjointView.h
index 211506e..d775a3f 100644
--- a/Eigen/src/SparseCore/SparseSelfAdjointView.h
+++ b/Eigen/src/SparseCore/SparseSelfAdjointView.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSE_SELFADJOINTVIEW_H
 #define EIGEN_SPARSE_SELFADJOINTVIEW_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseSolverBase.h b/Eigen/src/SparseCore/SparseSolverBase.h
index 8261fb5..c2926f4 100644
--- a/Eigen/src/SparseCore/SparseSolverBase.h
+++ b/Eigen/src/SparseCore/SparseSolverBase.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSESOLVERBASE_H
 #define EIGEN_SPARSESOLVERBASE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseSparseProductWithPruning.h b/Eigen/src/SparseCore/SparseSparseProductWithPruning.h
index ee0ec1b..96f73cc 100644
--- a/Eigen/src/SparseCore/SparseSparseProductWithPruning.h
+++ b/Eigen/src/SparseCore/SparseSparseProductWithPruning.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSESPARSEPRODUCTWITHPRUNING_H
 #define EIGEN_SPARSESPARSEPRODUCTWITHPRUNING_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseTranspose.h b/Eigen/src/SparseCore/SparseTranspose.h
index cce5903..b774caf 100644
--- a/Eigen/src/SparseCore/SparseTranspose.h
+++ b/Eigen/src/SparseCore/SparseTranspose.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSETRANSPOSE_H
 #define EIGEN_SPARSETRANSPOSE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseTriangularView.h b/Eigen/src/SparseCore/SparseTriangularView.h
index 5e7cea7..5cac825 100644
--- a/Eigen/src/SparseCore/SparseTriangularView.h
+++ b/Eigen/src/SparseCore/SparseTriangularView.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_SPARSE_TRIANGULARVIEW_H
 #define EIGEN_SPARSE_TRIANGULARVIEW_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseCore/SparseUtil.h b/Eigen/src/SparseCore/SparseUtil.h
index 47f5ef6..c9b5e83 100644
--- a/Eigen/src/SparseCore/SparseUtil.h
+++ b/Eigen/src/SparseCore/SparseUtil.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSEUTIL_H
 #define EIGEN_SPARSEUTIL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseVector.h b/Eigen/src/SparseCore/SparseVector.h
index 3b4d7b0..fd5eb19 100644
--- a/Eigen/src/SparseCore/SparseVector.h
+++ b/Eigen/src/SparseCore/SparseVector.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSEVECTOR_H
 #define EIGEN_SPARSEVECTOR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/SparseView.h b/Eigen/src/SparseCore/SparseView.h
index dbb4c43..a1cdcf8 100644
--- a/Eigen/src/SparseCore/SparseView.h
+++ b/Eigen/src/SparseCore/SparseView.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_SPARSEVIEW_H
 #define EIGEN_SPARSEVIEW_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseCore/TriangularSolver.h b/Eigen/src/SparseCore/TriangularSolver.h
index a9fbeeb..39fa7c7 100644
--- a/Eigen/src/SparseCore/TriangularSolver.h
+++ b/Eigen/src/SparseCore/TriangularSolver.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSETRIANGULARSOLVER_H
 #define EIGEN_SPARSETRIANGULARSOLVER_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/SparseLU/SparseLU.h b/Eigen/src/SparseLU/SparseLU.h
index f70aab1..4edd267 100644
--- a/Eigen/src/SparseLU/SparseLU.h
+++ b/Eigen/src/SparseLU/SparseLU.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_SPARSE_LU_H
 #define EIGEN_SPARSE_LU_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLUImpl.h b/Eigen/src/SparseLU/SparseLUImpl.h
index daec837..ff2b111 100644
--- a/Eigen/src/SparseLU/SparseLUImpl.h
+++ b/Eigen/src/SparseLU/SparseLUImpl.h
@@ -9,6 +9,7 @@
 #ifndef SPARSELU_IMPL_H
 #define SPARSELU_IMPL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_Memory.h b/Eigen/src/SparseLU/SparseLU_Memory.h
index 798745f..cc26256 100644
--- a/Eigen/src/SparseLU/SparseLU_Memory.h
+++ b/Eigen/src/SparseLU/SparseLU_Memory.h
@@ -31,6 +31,7 @@
 #ifndef EIGEN_SPARSELU_MEMORY
 #define EIGEN_SPARSELU_MEMORY
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_Structs.h b/Eigen/src/SparseLU/SparseLU_Structs.h
index 3ab0c72..f1f109a 100644
--- a/Eigen/src/SparseLU/SparseLU_Structs.h
+++ b/Eigen/src/SparseLU/SparseLU_Structs.h
@@ -68,6 +68,7 @@
 
 #ifndef EIGEN_LU_STRUCTS
 #define EIGEN_LU_STRUCTS
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_SupernodalMatrix.h b/Eigen/src/SparseLU/SparseLU_SupernodalMatrix.h
index adfc63a..627e55d 100644
--- a/Eigen/src/SparseLU/SparseLU_SupernodalMatrix.h
+++ b/Eigen/src/SparseLU/SparseLU_SupernodalMatrix.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_SPARSELU_SUPERNODAL_MATRIX_H
 #define EIGEN_SPARSELU_SUPERNODAL_MATRIX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_Utils.h b/Eigen/src/SparseLU/SparseLU_Utils.h
index e399fed..79544e6 100644
--- a/Eigen/src/SparseLU/SparseLU_Utils.h
+++ b/Eigen/src/SparseLU/SparseLU_Utils.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_SPARSELU_UTILS_H
 #define EIGEN_SPARSELU_UTILS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_column_bmod.h b/Eigen/src/SparseLU/SparseLU_column_bmod.h
index d5c29b3..0416607 100644
--- a/Eigen/src/SparseLU/SparseLU_column_bmod.h
+++ b/Eigen/src/SparseLU/SparseLU_column_bmod.h
@@ -31,6 +31,7 @@
 #ifndef SPARSELU_COLUMN_BMOD_H
 #define SPARSELU_COLUMN_BMOD_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_column_dfs.h b/Eigen/src/SparseLU/SparseLU_column_dfs.h
index be4cfd1..ddead00 100644
--- a/Eigen/src/SparseLU/SparseLU_column_dfs.h
+++ b/Eigen/src/SparseLU/SparseLU_column_dfs.h
@@ -31,6 +31,7 @@
 #define SPARSELU_COLUMN_DFS_H
 
 template <typename Scalar, typename StorageIndex> class SparseLUImpl;
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_copy_to_ucol.h b/Eigen/src/SparseLU/SparseLU_copy_to_ucol.h
index e06b2a0..b9e7c62 100644
--- a/Eigen/src/SparseLU/SparseLU_copy_to_ucol.h
+++ b/Eigen/src/SparseLU/SparseLU_copy_to_ucol.h
@@ -29,6 +29,7 @@
 #ifndef SPARSELU_COPY_TO_UCOL_H
 #define SPARSELU_COPY_TO_UCOL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h b/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h
index 2a8d80b..4df0dcd 100644
--- a/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h
+++ b/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h
@@ -28,6 +28,7 @@
 #ifndef SPARSELU_HEAP_RELAX_SNODE_H
 #define SPARSELU_HEAP_RELAX_SNODE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_kernel_bmod.h b/Eigen/src/SparseLU/SparseLU_kernel_bmod.h
index 831b938..da32041 100644
--- a/Eigen/src/SparseLU/SparseLU_kernel_bmod.h
+++ b/Eigen/src/SparseLU/SparseLU_kernel_bmod.h
@@ -11,6 +11,7 @@
 #ifndef SPARSELU_KERNEL_BMOD_H
 #define SPARSELU_KERNEL_BMOD_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_panel_bmod.h b/Eigen/src/SparseLU/SparseLU_panel_bmod.h
index fd1243d..d12d0e2 100644
--- a/Eigen/src/SparseLU/SparseLU_panel_bmod.h
+++ b/Eigen/src/SparseLU/SparseLU_panel_bmod.h
@@ -31,6 +31,7 @@
 #ifndef SPARSELU_PANEL_BMOD_H
 #define SPARSELU_PANEL_BMOD_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_panel_dfs.h b/Eigen/src/SparseLU/SparseLU_panel_dfs.h
index c3ff013..5a3fd10 100644
--- a/Eigen/src/SparseLU/SparseLU_panel_dfs.h
+++ b/Eigen/src/SparseLU/SparseLU_panel_dfs.h
@@ -30,6 +30,7 @@
 #ifndef SPARSELU_PANEL_DFS_H
 #define SPARSELU_PANEL_DFS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_pivotL.h b/Eigen/src/SparseLU/SparseLU_pivotL.h
index 6daed91..79510bc 100644
--- a/Eigen/src/SparseLU/SparseLU_pivotL.h
+++ b/Eigen/src/SparseLU/SparseLU_pivotL.h
@@ -30,6 +30,7 @@
 #ifndef SPARSELU_PIVOTL_H
 #define SPARSELU_PIVOTL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_pruneL.h b/Eigen/src/SparseLU/SparseLU_pruneL.h
index e5da73b..c184274 100644
--- a/Eigen/src/SparseLU/SparseLU_pruneL.h
+++ b/Eigen/src/SparseLU/SparseLU_pruneL.h
@@ -30,6 +30,7 @@
 #ifndef SPARSELU_PRUNEL_H
 #define SPARSELU_PRUNEL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseLU/SparseLU_relax_snode.h b/Eigen/src/SparseLU/SparseLU_relax_snode.h
index ed79532..6153149 100644
--- a/Eigen/src/SparseLU/SparseLU_relax_snode.h
+++ b/Eigen/src/SparseLU/SparseLU_relax_snode.h
@@ -28,6 +28,7 @@
 #ifndef SPARSELU_RELAX_SNODE_H
 #define SPARSELU_RELAX_SNODE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SparseQR/SparseQR.h b/Eigen/src/SparseQR/SparseQR.h
index f825092..a027a2d 100644
--- a/Eigen/src/SparseQR/SparseQR.h
+++ b/Eigen/src/SparseQR/SparseQR.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_SPARSE_QR_H
 #define EIGEN_SPARSE_QR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/SuperLUSupport/SuperLUSupport.h b/Eigen/src/SuperLUSupport/SuperLUSupport.h
index 4bac22d..419d7d8 100644
--- a/Eigen/src/SuperLUSupport/SuperLUSupport.h
+++ b/Eigen/src/SuperLUSupport/SuperLUSupport.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SUPERLUSUPPORT_H
 #define EIGEN_SUPERLUSUPPORT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/ThreadPool/Barrier.h b/Eigen/src/ThreadPool/Barrier.h
index df58d87..8b2f8da 100644
--- a/Eigen/src/ThreadPool/Barrier.h
+++ b/Eigen/src/ThreadPool/Barrier.h
@@ -13,6 +13,7 @@
 #ifndef EIGEN_CXX11_THREADPOOL_BARRIER_H
 #define EIGEN_CXX11_THREADPOOL_BARRIER_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/ThreadPool/EventCount.h b/Eigen/src/ThreadPool/EventCount.h
index 3b57d27..1e8aa8a 100644
--- a/Eigen/src/ThreadPool/EventCount.h
+++ b/Eigen/src/ThreadPool/EventCount.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_THREADPOOL_EVENTCOUNT_H
 #define EIGEN_CXX11_THREADPOOL_EVENTCOUNT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/ThreadPool/NonBlockingThreadPool.h b/Eigen/src/ThreadPool/NonBlockingThreadPool.h
index 40f2f3f..6d0c3ad 100644
--- a/Eigen/src/ThreadPool/NonBlockingThreadPool.h
+++ b/Eigen/src/ThreadPool/NonBlockingThreadPool.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_THREADPOOL_NONBLOCKING_THREAD_POOL_H
 #define EIGEN_CXX11_THREADPOOL_NONBLOCKING_THREAD_POOL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/ThreadPool/RunQueue.h b/Eigen/src/ThreadPool/RunQueue.h
index 2005fb2..44b668d 100644
--- a/Eigen/src/ThreadPool/RunQueue.h
+++ b/Eigen/src/ThreadPool/RunQueue.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_THREADPOOL_RUNQUEUE_H
 #define EIGEN_CXX11_THREADPOOL_RUNQUEUE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/ThreadPool/ThreadEnvironment.h b/Eigen/src/ThreadPool/ThreadEnvironment.h
index 02ec366..0e3a49b 100644
--- a/Eigen/src/ThreadPool/ThreadEnvironment.h
+++ b/Eigen/src/ThreadPool/ThreadEnvironment.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_THREADPOOL_THREAD_ENVIRONMENT_H
 #define EIGEN_CXX11_THREADPOOL_THREAD_ENVIRONMENT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/ThreadPool/ThreadLocal.h b/Eigen/src/ThreadPool/ThreadLocal.h
index ff3f834..ef9c61e 100644
--- a/Eigen/src/ThreadPool/ThreadLocal.h
+++ b/Eigen/src/ThreadPool/ThreadLocal.h
@@ -58,6 +58,7 @@
 
 #endif  // EIGEN_AVOID_THREAD_LOCAL
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/ThreadPool/ThreadPoolInterface.h b/Eigen/src/ThreadPool/ThreadPoolInterface.h
index e6750a9..9b01c87 100644
--- a/Eigen/src/ThreadPool/ThreadPoolInterface.h
+++ b/Eigen/src/ThreadPool/ThreadPoolInterface.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_THREADPOOL_THREAD_POOL_INTERFACE_H
 #define EIGEN_CXX11_THREADPOOL_THREAD_POOL_INTERFACE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/UmfPackSupport/UmfPackSupport.h b/Eigen/src/UmfPackSupport/UmfPackSupport.h
index d9a8d38..da631d3 100644
--- a/Eigen/src/UmfPackSupport/UmfPackSupport.h
+++ b/Eigen/src/UmfPackSupport/UmfPackSupport.h
@@ -20,6 +20,7 @@
 #endif
 #endif
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/misc/Image.h b/Eigen/src/misc/Image.h
index b500036..d7c99f0 100644
--- a/Eigen/src/misc/Image.h
+++ b/Eigen/src/misc/Image.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_MISC_IMAGE_H
 #define EIGEN_MISC_IMAGE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/misc/Kernel.h b/Eigen/src/misc/Kernel.h
index 7abfbb7..676f0ca 100644
--- a/Eigen/src/misc/Kernel.h
+++ b/Eigen/src/misc/Kernel.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_MISC_KERNEL_H
 #define EIGEN_MISC_KERNEL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/Eigen/src/misc/RealSvd2x2.h b/Eigen/src/misc/RealSvd2x2.h
index 5dd75f3..084bd35 100644
--- a/Eigen/src/misc/RealSvd2x2.h
+++ b/Eigen/src/misc/RealSvd2x2.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_REALSVD2X2_H
 #define EIGEN_REALSVD2X2_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/Eigen/src/misc/lapacke_helpers.h b/Eigen/src/misc/lapacke_helpers.h
index 0703c2b..dc4a04e 100644
--- a/Eigen/src/misc/lapacke_helpers.h
+++ b/Eigen/src/misc/lapacke_helpers.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_LAPACKE_HELPERS_H
 #define EIGEN_LAPACKE_HELPERS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 #ifdef EIGEN_USE_MKL
diff --git a/Eigen/src/plugins/ArrayCwiseBinaryOps.h b/Eigen/src/plugins/ArrayCwiseBinaryOps.inc
similarity index 100%
rename from Eigen/src/plugins/ArrayCwiseBinaryOps.h
rename to Eigen/src/plugins/ArrayCwiseBinaryOps.inc
diff --git a/Eigen/src/plugins/ArrayCwiseUnaryOps.h b/Eigen/src/plugins/ArrayCwiseUnaryOps.inc
similarity index 100%
rename from Eigen/src/plugins/ArrayCwiseUnaryOps.h
rename to Eigen/src/plugins/ArrayCwiseUnaryOps.inc
diff --git a/Eigen/src/plugins/BlockMethods.h b/Eigen/src/plugins/BlockMethods.inc
similarity index 100%
rename from Eigen/src/plugins/BlockMethods.h
rename to Eigen/src/plugins/BlockMethods.inc
diff --git a/Eigen/src/plugins/CommonCwiseBinaryOps.h b/Eigen/src/plugins/CommonCwiseBinaryOps.inc
similarity index 100%
rename from Eigen/src/plugins/CommonCwiseBinaryOps.h
rename to Eigen/src/plugins/CommonCwiseBinaryOps.inc
diff --git a/Eigen/src/plugins/CommonCwiseUnaryOps.h b/Eigen/src/plugins/CommonCwiseUnaryOps.inc
similarity index 100%
rename from Eigen/src/plugins/CommonCwiseUnaryOps.h
rename to Eigen/src/plugins/CommonCwiseUnaryOps.inc
diff --git a/Eigen/src/plugins/IndexedViewMethods.h b/Eigen/src/plugins/IndexedViewMethods.inc
similarity index 100%
rename from Eigen/src/plugins/IndexedViewMethods.h
rename to Eigen/src/plugins/IndexedViewMethods.inc
diff --git a/Eigen/src/plugins/InternalHeaderCheck.h b/Eigen/src/plugins/InternalHeaderCheck.inc
similarity index 100%
rename from Eigen/src/plugins/InternalHeaderCheck.h
rename to Eigen/src/plugins/InternalHeaderCheck.inc
diff --git a/Eigen/src/plugins/MatrixCwiseBinaryOps.h b/Eigen/src/plugins/MatrixCwiseBinaryOps.inc
similarity index 100%
rename from Eigen/src/plugins/MatrixCwiseBinaryOps.h
rename to Eigen/src/plugins/MatrixCwiseBinaryOps.inc
diff --git a/Eigen/src/plugins/MatrixCwiseUnaryOps.h b/Eigen/src/plugins/MatrixCwiseUnaryOps.inc
similarity index 100%
rename from Eigen/src/plugins/MatrixCwiseUnaryOps.h
rename to Eigen/src/plugins/MatrixCwiseUnaryOps.inc
diff --git a/Eigen/src/plugins/ReshapedMethods.h b/Eigen/src/plugins/ReshapedMethods.inc
similarity index 99%
rename from Eigen/src/plugins/ReshapedMethods.h
rename to Eigen/src/plugins/ReshapedMethods.inc
index 2cb1cf6..db2b395 100644
--- a/Eigen/src/plugins/ReshapedMethods.h
+++ b/Eigen/src/plugins/ReshapedMethods.inc
@@ -142,7 +142,7 @@
 
 #ifndef EIGEN_RESHAPED_METHOD_2ND_PASS
 #define EIGEN_RESHAPED_METHOD_2ND_PASS
-#include "ReshapedMethods.h"
+#include "ReshapedMethods.inc"
 #undef EIGEN_RESHAPED_METHOD_2ND_PASS
 #endif
 
diff --git a/test/boostmultiprec.cpp b/test/boostmultiprec.cpp
index 5759888..6684f74 100644
--- a/test/boostmultiprec.cpp
+++ b/test/boostmultiprec.cpp
@@ -201,8 +201,10 @@
     TEST_SET_BUT_UNUSED_VARIABLE(s)
   }
 
-  CALL_SUBTEST_9(( jacobisvd_all_options(Mat(internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE), internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE/2))) ));
-  CALL_SUBTEST_10(( bdcsvd_all_options(Mat(internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE), internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE/2))) ));
+  CALL_SUBTEST_9(( jacobisvd_thin_options(Mat(internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE), internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE/2))) ));
+  CALL_SUBTEST_9(( jacobisvd_full_options(Mat(internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE), internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE/2))) ));
+  CALL_SUBTEST_10(( bdcsvd_thin_options(Mat(internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE), internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE/2))) ));
+  CALL_SUBTEST_10(( bdcsvd_full_options(Mat(internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE), internal::random<int>(EIGEN_TEST_MAX_SIZE/4, EIGEN_TEST_MAX_SIZE/2))) ));
 
   CALL_SUBTEST_11(( test_simplicial_cholesky_T<Real,int,ColMajor>() ));
 }
diff --git a/test/mapped_matrix.cpp b/test/mapped_matrix.cpp
index 7270d03..f4638f6 100644
--- a/test/mapped_matrix.cpp
+++ b/test/mapped_matrix.cpp
@@ -68,12 +68,12 @@
   Scalar array4[256];
   if(size<=256)
     for(int i = 0; i < size; i++) array4[i] = Scalar(1);
-  
+
   Map<MatrixType> map1(array1, rows, cols);
   Map<MatrixType, AlignedMax> map2(array2, rows, cols);
   Map<MatrixType> map3(array3unaligned, rows, cols);
   Map<MatrixType> map4(array4, rows, cols);
-  
+
   VERIFY_IS_EQUAL(map1, MatrixType::Ones(rows,cols));
   VERIFY_IS_EQUAL(map2, MatrixType::Ones(rows,cols));
   VERIFY_IS_EQUAL(map3, MatrixType::Ones(rows,cols));
@@ -88,17 +88,17 @@
   VERIFY_IS_EQUAL(ma1, ma2);
   VERIFY_IS_EQUAL(ma1, ma3);
   VERIFY_IS_EQUAL(ma1, map3);
-  
+
   VERIFY_IS_APPROX(s1*map1, s1*map2);
   VERIFY_IS_APPROX(s1*ma1, s1*ma2);
   VERIFY_IS_EQUAL(s1*ma1, s1*ma3);
   VERIFY_IS_APPROX(s1*map1, s1*map3);
-  
+
   map2 *= s1;
   map3 *= s1;
   VERIFY_IS_APPROX(s1*map1, map2);
   VERIFY_IS_APPROX(s1*map1, map3);
-  
+
   if(size<=256)
   {
     VERIFY_IS_EQUAL(map4, MatrixType::Ones(rows,cols));
@@ -108,7 +108,7 @@
     VERIFY_IS_EQUAL(ma1, map4);
     VERIFY_IS_EQUAL(ma1, ma4);
     VERIFY_IS_APPROX(s1*map1, s1*map4);
-    
+
     map4 *= s1;
     VERIFY_IS_APPROX(s1*map1, map4);
   }
@@ -159,27 +159,6 @@
   VERIFY( !(Map<ConstPlainObjectType, AlignedMax>::Flags & LvalueBit) );
 }
 
-template<typename Scalar>
-void map_not_aligned_on_scalar()
-{
-  typedef Matrix<Scalar,Dynamic,Dynamic> MatrixType;
-  Index size = 11;
-  Scalar* array1 = internal::aligned_new<Scalar>((size+1)*(size+1)+1);
-  Scalar* array2 = reinterpret_cast<Scalar*>(sizeof(Scalar)/2+std::size_t(array1));
-  Map<MatrixType,0,OuterStride<> > map2(array2, size, size, OuterStride<>(size+1));
-  MatrixType m2 = MatrixType::Random(size,size);
-  map2 = m2;
-  VERIFY_IS_EQUAL(m2, map2);
-  
-  typedef Matrix<Scalar,Dynamic,1> VectorType;
-  Map<VectorType> map3(array2, size);
-  MatrixType v3 = VectorType::Random(size);
-  map3 = v3;
-  VERIFY_IS_EQUAL(v3, map3);
-  
-  internal::aligned_delete(array1, (size+1)*(size+1)+1);
-}
-
 EIGEN_DECLARE_TEST(mapped_matrix)
 {
   for(int i = 0; i < g_repeat; i++) {
@@ -204,6 +183,5 @@
     CALL_SUBTEST_8( map_static_methods(RowVector3d()) );
     CALL_SUBTEST_9( map_static_methods(VectorXcd(8)) );
     CALL_SUBTEST_10( map_static_methods(VectorXf(12)) );
-    CALL_SUBTEST_11( map_not_aligned_on_scalar<double>() );
   }
 }
diff --git a/unsupported/Eigen/CXX11/src/Tensor/Tensor.h b/unsupported/Eigen/CXX11/src/Tensor/Tensor.h
index f873f2b..a24097a 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/Tensor.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/Tensor.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_H
 #define EIGEN_CXX11_TENSOR_TENSOR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorArgMax.h b/unsupported/Eigen/CXX11/src/Tensor/TensorArgMax.h
index 1b64231..c6655ee 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorArgMax.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorArgMax.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_ARG_MAX_H
 #define EIGEN_CXX11_TENSOR_TENSOR_ARG_MAX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorAssign.h b/unsupported/Eigen/CXX11/src/Tensor/TensorAssign.h
index d2f6ee2..4cc0593 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorAssign.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorAssign.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_ASSIGN_H
 #define EIGEN_CXX11_TENSOR_TENSOR_ASSIGN_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorBase.h b/unsupported/Eigen/CXX11/src/Tensor/TensorBase.h
index 9ca9ca1..c4dedc1 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorBase.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorBase.h
@@ -12,6 +12,7 @@
 
 // clang-format off
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorBlock.h b/unsupported/Eigen/CXX11/src/Tensor/TensorBlock.h
index 7e924879..aa460ba 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorBlock.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorBlock.h
@@ -8,6 +8,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_BLOCK_H
 #define EIGEN_CXX11_TENSOR_TENSOR_BLOCK_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
@@ -1054,28 +1055,28 @@
       }
       return;
     }
-
-    const IndexType vectorized_size = count - PacketSize;
+    
+    const IndexType vectorized_size = PacketSize * (count / PacketSize);
     IndexType i = 0;
 
     if (kind == StridedLinearBufferCopy::Kind::Linear) {
       // ******************************************************************** //
       // Linear copy from `src` to `dst`.
-      const IndexType unrolled_size = count - 4 * PacketSize;
+      const IndexType unrolled_size = (4 * PacketSize) * (count / (4 * PacketSize));
       eigen_assert(src_stride == 1 && dst_stride == 1);
-      for (; i <= unrolled_size; i += 4 * PacketSize) {
+      for (; i < unrolled_size; i += 4 * PacketSize) {
         for (int j = 0; j < 4; ++j) {
           Packet p = ploadu<Packet>(src + i + j * PacketSize);
           pstoreu<Scalar, Packet>(dst + i + j * PacketSize, p);
         }
       }
-      for (; i <= vectorized_size; i += PacketSize) {
+      for (; i < vectorized_size; i += PacketSize) {
         Packet p = ploadu<Packet>(src + i);
         pstoreu<Scalar, Packet>(dst + i, p);
       }
       if (HasHalfPacket) {
-        const IndexType vectorized_half_size = count - HalfPacketSize;
-        if (i <= vectorized_half_size) {
+        const IndexType vectorized_half_size = HalfPacketSize * (count / HalfPacketSize);
+        if (i < vectorized_half_size) {
           HalfPacket p = ploadu<HalfPacket>(src + i);
           pstoreu<Scalar, HalfPacket>(dst + i, p);
           i += HalfPacketSize;
@@ -1088,13 +1089,13 @@
     } else if (kind == StridedLinearBufferCopy::Kind::Scatter) {
       // Scatter from `src` to `dst`.
       eigen_assert(src_stride == 1 && dst_stride != 1);
-      for (; i <= vectorized_size; i += PacketSize) {
+      for (; i < vectorized_size; i += PacketSize) {
         Packet p = ploadu<Packet>(src + i);
         pscatter<Scalar, Packet>(dst + i * dst_stride, p, dst_stride);
       }
       if (HasHalfPacket) {
-        const IndexType vectorized_half_size = count - HalfPacketSize;
-        if (i <= vectorized_half_size) {
+        const IndexType vectorized_half_size = HalfPacketSize * (count / HalfPacketSize);
+        if (i < vectorized_half_size) {
           HalfPacket p = ploadu<HalfPacket>(src + i);
           pscatter<Scalar, HalfPacket>(dst + i * dst_stride, p, dst_stride);
           i += HalfPacketSize;
@@ -1107,20 +1108,21 @@
     } else if (kind == StridedLinearBufferCopy::Kind::FillLinear) {
       // Fill `dst` with value at `*src`.
       eigen_assert(src_stride == 0 && dst_stride == 1);
-      const IndexType unrolled_size = count - 4 * PacketSize;
+
+      const IndexType unrolled_size = (4 * PacketSize) * (count / (4 * PacketSize));
       Scalar s = *src;
       Packet p = pset1<Packet>(s);
-      for (; i <= unrolled_size; i += 4 * PacketSize) {
+      for (; i < unrolled_size; i += 4 * PacketSize) {
         for (int j = 0; j < 4; ++j) {
           pstoreu<Scalar, Packet>(dst + i + j * PacketSize, p);
         }
       }
-      for (; i <= vectorized_size; i += PacketSize) {
+      for (; i < vectorized_size; i += PacketSize) {
         pstoreu<Scalar, Packet>(dst + i, p);
       }
       if (HasHalfPacket) {
-        const IndexType vectorized_half_size = count - HalfPacketSize;
-        if (i <= vectorized_half_size) {
+        const IndexType vectorized_half_size = HalfPacketSize * (count / HalfPacketSize);
+        if (i < vectorized_half_size) {
           HalfPacket hp = pset1<HalfPacket>(s);
           pstoreu<Scalar, HalfPacket>(dst + i, hp);
           i += HalfPacketSize;
@@ -1135,12 +1137,12 @@
       eigen_assert(src_stride == 0 && dst_stride != 1);
       Scalar s = *src;
       Packet p = pset1<Packet>(s);
-      for (; i <= vectorized_size; i += PacketSize) {
+      for (; i < vectorized_size; i += PacketSize) {
         pscatter<Scalar, Packet>(dst + i * dst_stride, p, dst_stride);
       }
       if (HasHalfPacket) {
-        const IndexType vectorized_half_size = count - HalfPacketSize;
-        if (i <= vectorized_half_size) {
+        const IndexType vectorized_half_size = HalfPacketSize * (count / HalfPacketSize);
+        if (i < vectorized_half_size) {
           HalfPacket hp = pset1<HalfPacket>(s);
           pscatter<Scalar, HalfPacket>(dst + i * dst_stride, hp, dst_stride);
           i += HalfPacketSize;
@@ -1153,13 +1155,13 @@
     } else if (kind == StridedLinearBufferCopy::Kind::Gather) {
       // Gather from `src` into `dst`.
       eigen_assert(dst_stride == 1);
-      for (; i <= vectorized_size; i += PacketSize) {
+      for (; i < vectorized_size; i += PacketSize) {
         Packet p = pgather<Scalar, Packet>(src + i * src_stride, src_stride);
         pstoreu<Scalar, Packet>(dst + i, p);
       }
       if (HasHalfPacket) {
-        const IndexType vectorized_half_size = count - HalfPacketSize;
-        if (i <= vectorized_half_size) {
+        const IndexType vectorized_half_size = HalfPacketSize * (count / HalfPacketSize);
+        if (i < vectorized_half_size) {
           HalfPacket p =
               pgather<Scalar, HalfPacket>(src + i * src_stride, src_stride);
           pstoreu<Scalar, HalfPacket>(dst + i, p);
@@ -1456,11 +1458,11 @@
                                         IndexType eval_offset) {
       typedef typename packet_traits<Scalar>::type Packet;
 
-      const IndexType unrolled_size = count - 4 * PacketSize;
-      const IndexType vectorized_size = count - PacketSize;
+      const IndexType unrolled_size = (4 * PacketSize) * (count / (4 * PacketSize));
+      const IndexType vectorized_size = PacketSize * (count / PacketSize);
       IndexType i = 0;
 
-      for (; i <= unrolled_size; i += 4 * PacketSize) {
+      for (; i < unrolled_size; i += 4 * PacketSize) {
         for (int j = 0; j < 4; ++j) {
           const IndexType idx = eval_offset + i + j * PacketSize;
           Packet p = eval.template packet<Unaligned>(idx);
@@ -1468,7 +1470,7 @@
         }
       }
 
-      for (; i <= vectorized_size; i += PacketSize) {
+      for (; i < vectorized_size; i += PacketSize) {
         Packet p = eval.template packet<Unaligned>(eval_offset + i);
         pstoreu<Scalar>(target + i, p);
       }
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorBroadcasting.h b/unsupported/Eigen/CXX11/src/Tensor/TensorBroadcasting.h
index 5ae0d81..1cf5035 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorBroadcasting.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorBroadcasting.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_BROADCASTING_H
 #define EIGEN_CXX11_TENSOR_TENSOR_BROADCASTING_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorChipping.h b/unsupported/Eigen/CXX11/src/Tensor/TensorChipping.h
index dc3fc18..6529d47 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorChipping.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorChipping.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_CHIPPING_H
 #define EIGEN_CXX11_TENSOR_TENSOR_CHIPPING_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorConcatenation.h b/unsupported/Eigen/CXX11/src/Tensor/TensorConcatenation.h
index 2be7692..9337e67 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorConcatenation.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorConcatenation.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_CONCATENATION_H
 #define EIGEN_CXX11_TENSOR_TENSOR_CONCATENATION_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorContraction.h b/unsupported/Eigen/CXX11/src/Tensor/TensorContraction.h
index 2fa6777..f0520e8 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorContraction.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorContraction.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_CONTRACTION_H
 #define EIGEN_CXX11_TENSOR_TENSOR_CONTRACTION_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorContractionBlocking.h b/unsupported/Eigen/CXX11/src/Tensor/TensorContractionBlocking.h
index 4b3d423..ce1bf62 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorContractionBlocking.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorContractionBlocking.h
@@ -11,6 +11,7 @@
 #define EIGEN_CXX11_TENSOR_TENSOR_CONTRACTION_BLOCKING_H
 
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorContractionGpu.h b/unsupported/Eigen/CXX11/src/Tensor/TensorContractionGpu.h
index 698baab..f0233fb 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorContractionGpu.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorContractionGpu.h
@@ -14,6 +14,7 @@
 
 #if defined(EIGEN_USE_GPU) && defined(EIGEN_GPUCC)
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorContractionMapper.h b/unsupported/Eigen/CXX11/src/Tensor/TensorContractionMapper.h
index 7fb54b9..f626baa 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorContractionMapper.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorContractionMapper.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_CONTRACTION_MAPPER_H
 #define EIGEN_CXX11_TENSOR_TENSOR_CONTRACTION_MAPPER_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorContractionSycl.h b/unsupported/Eigen/CXX11/src/Tensor/TensorContractionSycl.h
index a4e0fc7..cb74031 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorContractionSycl.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorContractionSycl.h
@@ -19,6 +19,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_CONTRACTION_SYCL_H
 #define EIGEN_CXX11_TENSOR_TENSOR_CONTRACTION_SYCL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorContractionThreadPool.h b/unsupported/Eigen/CXX11/src/Tensor/TensorContractionThreadPool.h
index 19f664c..308c23b 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorContractionThreadPool.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorContractionThreadPool.h
@@ -13,6 +13,7 @@
 // evaluator for thread pool device
 #ifdef EIGEN_USE_THREADS
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorConversion.h b/unsupported/Eigen/CXX11/src/Tensor/TensorConversion.h
index d59c2c3..a82e83b 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorConversion.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorConversion.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_CONVERSION_H
 #define EIGEN_CXX11_TENSOR_TENSOR_CONVERSION_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorConvolution.h b/unsupported/Eigen/CXX11/src/Tensor/TensorConvolution.h
index e6e586b..15a267e 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorConvolution.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorConvolution.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_CONVOLUTION_H
 #define EIGEN_CXX11_TENSOR_TENSOR_CONVOLUTION_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorConvolutionSycl.h b/unsupported/Eigen/CXX11/src/Tensor/TensorConvolutionSycl.h
index f279568..a35a24f 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorConvolutionSycl.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorConvolutionSycl.h
@@ -15,6 +15,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_CONVOLUTION_SYCL_H
 #define EIGEN_CXX11_TENSOR_TENSOR_CONVOLUTION_SYCL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorCostModel.h b/unsupported/Eigen/CXX11/src/Tensor/TensorCostModel.h
index c3f4bdd..595b3ae 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorCostModel.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorCostModel.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_COST_MODEL_H
 #define EIGEN_CXX11_TENSOR_TENSOR_COST_MODEL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorCustomOp.h b/unsupported/Eigen/CXX11/src/Tensor/TensorCustomOp.h
index 5fa0709..82254e8 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorCustomOp.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorCustomOp.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_CUSTOM_OP_H
 #define EIGEN_CXX11_TENSOR_TENSOR_CUSTOM_OP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDevice.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDevice.h
index 8148441..b21cd44 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDevice.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDevice.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_DEVICE_H
 #define EIGEN_CXX11_TENSOR_TENSOR_DEVICE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceDefault.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceDefault.h
index 7864a2a..f028912 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceDefault.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceDefault.h
@@ -11,6 +11,7 @@
 #define EIGEN_CXX11_TENSOR_TENSOR_DEVICE_DEFAULT_H
 
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceGpu.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceGpu.h
index b477907..950fe39 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceGpu.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceGpu.h
@@ -15,6 +15,7 @@
 // A separate header (included at the end of this file) will undefine all 
 #include "TensorGpuHipCudaDefines.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceSycl.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceSycl.h
index 7ff95d0..ddfd93b 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceSycl.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceSycl.h
@@ -16,6 +16,7 @@
 #define EIGEN_CXX11_TENSOR_TENSOR_DEVICE_SYCL_H
 #include <unordered_set>
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h
index 8858cbc..6c7ad67 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h
@@ -10,6 +10,7 @@
 #if defined(EIGEN_USE_THREADS) && !defined(EIGEN_CXX11_TENSOR_TENSOR_DEVICE_THREAD_POOL_H)
 #define EIGEN_CXX11_TENSOR_TENSOR_DEVICE_THREAD_POOL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDimensionList.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDimensionList.h
index c58838e..b15afb7 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDimensionList.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDimensionList.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_DIMENSION_LIST_H
 #define EIGEN_CXX11_TENSOR_TENSOR_DIMENSION_LIST_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDimensions.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDimensions.h
index 914140d..7b81172 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDimensions.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDimensions.h
@@ -11,6 +11,7 @@
 #define EIGEN_CXX11_TENSOR_TENSOR_DIMENSIONS_H
 
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorEvalTo.h b/unsupported/Eigen/CXX11/src/Tensor/TensorEvalTo.h
index 4617632..caa6dbd 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorEvalTo.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorEvalTo.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_EVAL_TO_H
 #define EIGEN_CXX11_TENSOR_TENSOR_EVAL_TO_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorEvaluator.h b/unsupported/Eigen/CXX11/src/Tensor/TensorEvaluator.h
index e5beb82..501cacb 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorEvaluator.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorEvaluator.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_EVALUATOR_H
 #define EIGEN_CXX11_TENSOR_TENSOR_EVALUATOR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h b/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h
index d8b99e9..461abe4 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_EXECUTOR_H
 #define EIGEN_CXX11_TENSOR_TENSOR_EXECUTOR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorExpr.h b/unsupported/Eigen/CXX11/src/Tensor/TensorExpr.h
index 9bed2a1..a5c8611 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorExpr.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorExpr.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_EXPR_H
 #define EIGEN_CXX11_TENSOR_TENSOR_EXPR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h b/unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h
index 4eaa60b..eeb3a94 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_FFT_H
 #define EIGEN_CXX11_TENSOR_TENSOR_FFT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorFixedSize.h b/unsupported/Eigen/CXX11/src/Tensor/TensorFixedSize.h
index 08b182a..0273a44 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorFixedSize.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorFixedSize.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_FIXED_SIZE_H
 #define EIGEN_CXX11_TENSOR_TENSOR_FIXED_SIZE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorForcedEval.h b/unsupported/Eigen/CXX11/src/Tensor/TensorForcedEval.h
index facf7d1..e6a9141 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorForcedEval.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorForcedEval.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_FORCED_EVAL_H
 #define EIGEN_CXX11_TENSOR_TENSOR_FORCED_EVAL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h b/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
index 4069b7d..0980987 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_FORWARD_DECLARATIONS_H
 #define EIGEN_CXX11_TENSOR_TENSOR_FORWARD_DECLARATIONS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h b/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
index 137fe58..a819e7d 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_FUNCTORS_H
 #define EIGEN_CXX11_TENSOR_TENSOR_FUNCTORS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorGenerator.h b/unsupported/Eigen/CXX11/src/Tensor/TensorGenerator.h
index 83f20eb..d0689d7 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorGenerator.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorGenerator.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_GENERATOR_H
 #define EIGEN_CXX11_TENSOR_TENSOR_GENERATOR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorGlobalFunctions.h b/unsupported/Eigen/CXX11/src/Tensor/TensorGlobalFunctions.h
index 65052a2..a4697a8 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorGlobalFunctions.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorGlobalFunctions.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_GLOBAL_FUNCTIONS_H
 #define EIGEN_CXX11_TENSOR_TENSOR_GLOBAL_FUNCTIONS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorIO.h b/unsupported/Eigen/CXX11/src/Tensor/TensorIO.h
index efda741..298401f 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorIO.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorIO.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_IO_H
 #define EIGEN_CXX11_TENSOR_TENSOR_IO_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorImagePatch.h b/unsupported/Eigen/CXX11/src/Tensor/TensorImagePatch.h
index 3ce021c..17f6c26 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorImagePatch.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorImagePatch.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_IMAGE_PATCH_H
 #define EIGEN_CXX11_TENSOR_TENSOR_IMAGE_PATCH_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorIndexList.h b/unsupported/Eigen/CXX11/src/Tensor/TensorIndexList.h
index dc97d21..b910059 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorIndexList.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorIndexList.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_INDEX_LIST_H
 #define EIGEN_CXX11_TENSOR_TENSOR_INDEX_LIST_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorInflation.h b/unsupported/Eigen/CXX11/src/Tensor/TensorInflation.h
index 7266305..2c9dba9 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorInflation.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorInflation.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_INFLATION_H
 #define EIGEN_CXX11_TENSOR_TENSOR_INFLATION_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorInitializer.h b/unsupported/Eigen/CXX11/src/Tensor/TensorInitializer.h
index d8d977c..72610be 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorInitializer.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorInitializer.h
@@ -12,6 +12,7 @@
 
 #include <initializer_list>
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h b/unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h
index a921fea..6af37f6 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h
@@ -11,6 +11,7 @@
 #define EIGEN_CXX11_TENSOR_TENSOR_INTDIV_H
 
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorLayoutSwap.h b/unsupported/Eigen/CXX11/src/Tensor/TensorLayoutSwap.h
index 5a727bc..ef2768d 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorLayoutSwap.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorLayoutSwap.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_LAYOUT_SWAP_H
 #define EIGEN_CXX11_TENSOR_TENSOR_LAYOUT_SWAP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorMap.h b/unsupported/Eigen/CXX11/src/Tensor/TensorMap.h
index 7a601ca..b690417 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorMap.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorMap.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_MAP_H
 #define EIGEN_CXX11_TENSOR_TENSOR_MAP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h b/unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h
index 5174d8d..b7c2cb8 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_META_H
 #define EIGEN_CXX11_TENSOR_TENSOR_META_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorMorphing.h b/unsupported/Eigen/CXX11/src/Tensor/TensorMorphing.h
index 4445343..a437ce1d 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorMorphing.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorMorphing.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_MORPHING_H
 #define EIGEN_CXX11_TENSOR_TENSOR_MORPHING_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorPadding.h b/unsupported/Eigen/CXX11/src/Tensor/TensorPadding.h
index 60dc7ab..8e2de59 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorPadding.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorPadding.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_PADDING_H
 #define EIGEN_CXX11_TENSOR_TENSOR_PADDING_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorPatch.h b/unsupported/Eigen/CXX11/src/Tensor/TensorPatch.h
index 61a6c98..149de12 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorPatch.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorPatch.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_PATCH_H
 #define EIGEN_CXX11_TENSOR_TENSOR_PATCH_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorRandom.h b/unsupported/Eigen/CXX11/src/Tensor/TensorRandom.h
index 0de4047..cb3a95d 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorRandom.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorRandom.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_RANDOM_H
 #define EIGEN_CXX11_TENSOR_TENSOR_RANDOM_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorReduction.h b/unsupported/Eigen/CXX11/src/Tensor/TensorReduction.h
index 8cd7867..c1ad675 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorReduction.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorReduction.h
@@ -21,6 +21,7 @@
 #endif
 #endif
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorReductionGpu.h b/unsupported/Eigen/CXX11/src/Tensor/TensorReductionGpu.h
index 600c2b0..aee86fd 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorReductionGpu.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorReductionGpu.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_REDUCTION_GPU_H
 #define EIGEN_CXX11_TENSOR_TENSOR_REDUCTION_GPU_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorReductionSycl.h b/unsupported/Eigen/CXX11/src/Tensor/TensorReductionSycl.h
index ea3c2dc..9e3f397 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorReductionSycl.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorReductionSycl.h
@@ -27,6 +27,7 @@
 
 #ifndef UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSOR_REDUCTION_SYCL_HPP
 #define UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSOR_REDUCTION_SYCL_HPP
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorRef.h b/unsupported/Eigen/CXX11/src/Tensor/TensorRef.h
index 843cb9d..996f47d 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorRef.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorRef.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_REF_H
 #define EIGEN_CXX11_TENSOR_TENSOR_REF_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorReverse.h b/unsupported/Eigen/CXX11/src/Tensor/TensorReverse.h
index ee84400..7515fd5 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorReverse.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorReverse.h
@@ -10,6 +10,7 @@
 
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_REVERSE_H
 #define EIGEN_CXX11_TENSOR_TENSOR_REVERSE_H
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorScan.h b/unsupported/Eigen/CXX11/src/Tensor/TensorScan.h
index 9d9458a..169a7a2 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorScan.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorScan.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_SCAN_H
 #define EIGEN_CXX11_TENSOR_TENSOR_SCAN_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorScanSycl.h b/unsupported/Eigen/CXX11/src/Tensor/TensorScanSycl.h
index 155cc0f..e108015 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorScanSycl.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorScanSycl.h
@@ -37,6 +37,7 @@
 #ifndef UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSOR_SYCL_SYCL_HPP
 #define UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSOR_SYCL_SYCL_HPP
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorShuffling.h b/unsupported/Eigen/CXX11/src/Tensor/TensorShuffling.h
index 78f9f92..12bcdca 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorShuffling.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorShuffling.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_SHUFFLING_H
 #define EIGEN_CXX11_TENSOR_TENSOR_SHUFFLING_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorStorage.h b/unsupported/Eigen/CXX11/src/Tensor/TensorStorage.h
index f9bb8f6..da4954f 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorStorage.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorStorage.h
@@ -17,6 +17,7 @@
   #define EIGEN_INTERNAL_TENSOR_STORAGE_CTOR_PLUGIN
 #endif
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorStriding.h b/unsupported/Eigen/CXX11/src/Tensor/TensorStriding.h
index 1b9a0f1..cd98f8c 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorStriding.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorStriding.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_STRIDING_H
 #define EIGEN_CXX11_TENSOR_TENSOR_STRIDING_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorTrace.h b/unsupported/Eigen/CXX11/src/Tensor/TensorTrace.h
index 55e8360..5e831b5 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorTrace.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorTrace.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_TRACE_H
 #define EIGEN_CXX11_TENSOR_TENSOR_TRACE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorTraits.h b/unsupported/Eigen/CXX11/src/Tensor/TensorTraits.h
index 8c705ec..d327b49 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorTraits.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorTraits.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_TRAITS_H
 #define EIGEN_CXX11_TENSOR_TENSOR_TRAITS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorUInt128.h b/unsupported/Eigen/CXX11/src/Tensor/TensorUInt128.h
index 37be364..1232032 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorUInt128.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorUInt128.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_UINT128_H
 #define EIGEN_CXX11_TENSOR_TENSOR_UINT128_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorVolumePatch.h b/unsupported/Eigen/CXX11/src/Tensor/TensorVolumePatch.h
index ac2ad61..cb49bef 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorVolumePatch.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorVolumePatch.h
@@ -4,6 +4,7 @@
 #ifndef EIGEN_CXX11_TENSOR_TENSOR_VOLUME_PATCH_H
 #define EIGEN_CXX11_TENSOR_TENSOR_VOLUME_PATCH_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/TensorSymmetry/DynamicSymmetry.h b/unsupported/Eigen/CXX11/src/TensorSymmetry/DynamicSymmetry.h
index 200f588..6f07e1c 100644
--- a/unsupported/Eigen/CXX11/src/TensorSymmetry/DynamicSymmetry.h
+++ b/unsupported/Eigen/CXX11/src/TensorSymmetry/DynamicSymmetry.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSORSYMMETRY_DYNAMICSYMMETRY_H
 #define EIGEN_CXX11_TENSORSYMMETRY_DYNAMICSYMMETRY_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/TensorSymmetry/StaticSymmetry.h b/unsupported/Eigen/CXX11/src/TensorSymmetry/StaticSymmetry.h
index e87403a..b06b700 100644
--- a/unsupported/Eigen/CXX11/src/TensorSymmetry/StaticSymmetry.h
+++ b/unsupported/Eigen/CXX11/src/TensorSymmetry/StaticSymmetry.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSORSYMMETRY_STATICSYMMETRY_H
 #define EIGEN_CXX11_TENSORSYMMETRY_STATICSYMMETRY_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/TensorSymmetry/Symmetry.h b/unsupported/Eigen/CXX11/src/TensorSymmetry/Symmetry.h
index a95f79c..b06101f 100644
--- a/unsupported/Eigen/CXX11/src/TensorSymmetry/Symmetry.h
+++ b/unsupported/Eigen/CXX11/src/TensorSymmetry/Symmetry.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSORSYMMETRY_SYMMETRY_H
 #define EIGEN_CXX11_TENSORSYMMETRY_SYMMETRY_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/CXX11/src/TensorSymmetry/util/TemplateGroupTheory.h b/unsupported/Eigen/CXX11/src/TensorSymmetry/util/TemplateGroupTheory.h
index c27d1ed..5fa33f1 100644
--- a/unsupported/Eigen/CXX11/src/TensorSymmetry/util/TemplateGroupTheory.h
+++ b/unsupported/Eigen/CXX11/src/TensorSymmetry/util/TemplateGroupTheory.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_CXX11_TENSORSYMMETRY_TEMPLATEGROUPTHEORY_H
 #define EIGEN_CXX11_TENSORSYMMETRY_TEMPLATEGROUPTHEORY_H
 
+// IWYU pragma: private
 #include "../InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/AutoDiff/AutoDiffJacobian.h b/unsupported/Eigen/src/AutoDiff/AutoDiffJacobian.h
index 6ef6bf4..7066f62 100644
--- a/unsupported/Eigen/src/AutoDiff/AutoDiffJacobian.h
+++ b/unsupported/Eigen/src/AutoDiff/AutoDiffJacobian.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_AUTODIFF_JACOBIAN_H
 #define EIGEN_AUTODIFF_JACOBIAN_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen
diff --git a/unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h b/unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h
index 97222d1..7e80cc5 100644
--- a/unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h
+++ b/unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_AUTODIFF_SCALAR_H
 #define EIGEN_AUTODIFF_SCALAR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/AutoDiff/AutoDiffVector.h b/unsupported/Eigen/src/AutoDiff/AutoDiffVector.h
index c544422..c1ed7ea 100644
--- a/unsupported/Eigen/src/AutoDiff/AutoDiffVector.h
+++ b/unsupported/Eigen/src/AutoDiff/AutoDiffVector.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_AUTODIFF_VECTOR_H
 #define EIGEN_AUTODIFF_VECTOR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/BVH/BVAlgorithms.h b/unsupported/Eigen/src/BVH/BVAlgorithms.h
index 7c83a5f..11cd5ac 100644
--- a/unsupported/Eigen/src/BVH/BVAlgorithms.h
+++ b/unsupported/Eigen/src/BVH/BVAlgorithms.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_BVALGORITHMS_H
 #define EIGEN_BVALGORITHMS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/BVH/KdBVH.h b/unsupported/Eigen/src/BVH/KdBVH.h
index e7d6684..99c4751 100644
--- a/unsupported/Eigen/src/BVH/KdBVH.h
+++ b/unsupported/Eigen/src/BVH/KdBVH.h
@@ -10,6 +10,7 @@
 #ifndef KDBVH_H_INCLUDED
 #define KDBVH_H_INCLUDED
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/Eigenvalues/ArpackSelfAdjointEigenSolver.h b/unsupported/Eigen/src/Eigenvalues/ArpackSelfAdjointEigenSolver.h
index b74449f..43192b2 100644
--- a/unsupported/Eigen/src/Eigenvalues/ArpackSelfAdjointEigenSolver.h
+++ b/unsupported/Eigen/src/Eigenvalues/ArpackSelfAdjointEigenSolver.h
@@ -12,6 +12,7 @@
 
 #include "../../../../Eigen/Dense"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/EulerAngles/EulerAngles.h b/unsupported/Eigen/src/EulerAngles/EulerAngles.h
index 252be42..740769e 100644
--- a/unsupported/Eigen/src/EulerAngles/EulerAngles.h
+++ b/unsupported/Eigen/src/EulerAngles/EulerAngles.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_EULERANGLESCLASS_H// TODO: Fix previous "EIGEN_EULERANGLES_H" definition?
 #define EIGEN_EULERANGLESCLASS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen
diff --git a/unsupported/Eigen/src/EulerAngles/EulerSystem.h b/unsupported/Eigen/src/EulerAngles/EulerSystem.h
index 278f9bf..c1e8d60 100644
--- a/unsupported/Eigen/src/EulerAngles/EulerSystem.h
+++ b/unsupported/Eigen/src/EulerAngles/EulerSystem.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_EULERSYSTEM_H
 #define EIGEN_EULERSYSTEM_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen
diff --git a/unsupported/Eigen/src/FFT/ei_fftw_impl.h b/unsupported/Eigen/src/FFT/ei_fftw_impl.h
index 034343d..cc5f726 100644
--- a/unsupported/Eigen/src/FFT/ei_fftw_impl.h
+++ b/unsupported/Eigen/src/FFT/ei_fftw_impl.h
@@ -7,6 +7,7 @@
 // Public License v. 2.0. If a copy of the MPL was not distributed
 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 #include <memory>
diff --git a/unsupported/Eigen/src/FFT/ei_imklfft_impl.h b/unsupported/Eigen/src/FFT/ei_imklfft_impl.h
index abfe20b..16af59d 100644
--- a/unsupported/Eigen/src/FFT/ei_imklfft_impl.h
+++ b/unsupported/Eigen/src/FFT/ei_imklfft_impl.h
@@ -7,6 +7,7 @@
 
 #include <mkl_dfti.h>
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 #include <complex>
diff --git a/unsupported/Eigen/src/FFT/ei_kissfft_impl.h b/unsupported/Eigen/src/FFT/ei_kissfft_impl.h
index 90e6690..80bbdb7 100644
--- a/unsupported/Eigen/src/FFT/ei_kissfft_impl.h
+++ b/unsupported/Eigen/src/FFT/ei_kissfft_impl.h
@@ -7,6 +7,7 @@
 // Public License v. 2.0. If a copy of the MPL was not distributed
 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/IterativeSolvers/DGMRES.h b/unsupported/Eigen/src/IterativeSolvers/DGMRES.h
index 0387ef3..17af7b9 100644
--- a/unsupported/Eigen/src/IterativeSolvers/DGMRES.h
+++ b/unsupported/Eigen/src/IterativeSolvers/DGMRES.h
@@ -12,6 +12,7 @@
 
 #include "../../../../Eigen/Eigenvalues"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/IterativeSolvers/GMRES.h b/unsupported/Eigen/src/IterativeSolvers/GMRES.h
index 741d9fe..0a4108f 100644
--- a/unsupported/Eigen/src/IterativeSolvers/GMRES.h
+++ b/unsupported/Eigen/src/IterativeSolvers/GMRES.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_GMRES_H
 #define EIGEN_GMRES_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/IterativeSolvers/IDRS.h b/unsupported/Eigen/src/IterativeSolvers/IDRS.h
index d8f7a32..09568e1 100644
--- a/unsupported/Eigen/src/IterativeSolvers/IDRS.h
+++ b/unsupported/Eigen/src/IterativeSolvers/IDRS.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_IDRS_H
 #define EIGEN_IDRS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/IterativeSolvers/IncompleteLU.h b/unsupported/Eigen/src/IterativeSolvers/IncompleteLU.h
index 3bf564c..4059a0e 100644
--- a/unsupported/Eigen/src/IterativeSolvers/IncompleteLU.h
+++ b/unsupported/Eigen/src/IterativeSolvers/IncompleteLU.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_INCOMPLETE_LU_H
 #define EIGEN_INCOMPLETE_LU_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/IterativeSolvers/MINRES.h b/unsupported/Eigen/src/IterativeSolvers/MINRES.h
index 2282777..f0b3cc4 100644
--- a/unsupported/Eigen/src/IterativeSolvers/MINRES.h
+++ b/unsupported/Eigen/src/IterativeSolvers/MINRES.h
@@ -14,6 +14,7 @@
 #define EIGEN_MINRES_H
 
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/IterativeSolvers/Scaling.h b/unsupported/Eigen/src/IterativeSolvers/Scaling.h
index 9400e81..eeed4e2 100644
--- a/unsupported/Eigen/src/IterativeSolvers/Scaling.h
+++ b/unsupported/Eigen/src/IterativeSolvers/Scaling.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_ITERSCALING_H
 #define EIGEN_ITERSCALING_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/KroneckerProduct/KroneckerTensorProduct.h b/unsupported/Eigen/src/KroneckerProduct/KroneckerTensorProduct.h
index 01a75ef..2843a6d 100644
--- a/unsupported/Eigen/src/KroneckerProduct/KroneckerTensorProduct.h
+++ b/unsupported/Eigen/src/KroneckerProduct/KroneckerTensorProduct.h
@@ -12,6 +12,7 @@
 #ifndef KRONECKER_TENSOR_PRODUCT_H
 #define KRONECKER_TENSOR_PRODUCT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/LevenbergMarquardt/LMcovar.h b/unsupported/Eigen/src/LevenbergMarquardt/LMcovar.h
index 344c22e..20588ac 100644
--- a/unsupported/Eigen/src/LevenbergMarquardt/LMcovar.h
+++ b/unsupported/Eigen/src/LevenbergMarquardt/LMcovar.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_LMCOVAR_H
 #define EIGEN_LMCOVAR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/LevenbergMarquardt/LMonestep.h b/unsupported/Eigen/src/LevenbergMarquardt/LMonestep.h
index 92cb6f6..a188fb7 100644
--- a/unsupported/Eigen/src/LevenbergMarquardt/LMonestep.h
+++ b/unsupported/Eigen/src/LevenbergMarquardt/LMonestep.h
@@ -14,6 +14,7 @@
 #ifndef EIGEN_LMONESTEP_H
 #define EIGEN_LMONESTEP_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/LevenbergMarquardt/LMpar.h b/unsupported/Eigen/src/LevenbergMarquardt/LMpar.h
index 74acc9a..7904c63 100644
--- a/unsupported/Eigen/src/LevenbergMarquardt/LMpar.h
+++ b/unsupported/Eigen/src/LevenbergMarquardt/LMpar.h
@@ -12,6 +12,7 @@
 #ifndef EIGEN_LMPAR_H
 #define EIGEN_LMPAR_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/LevenbergMarquardt/LMqrsolv.h b/unsupported/Eigen/src/LevenbergMarquardt/LMqrsolv.h
index 385b7b5..ba949c4 100644
--- a/unsupported/Eigen/src/LevenbergMarquardt/LMqrsolv.h
+++ b/unsupported/Eigen/src/LevenbergMarquardt/LMqrsolv.h
@@ -15,6 +15,7 @@
 #ifndef EIGEN_LMQRSOLV_H
 #define EIGEN_LMQRSOLV_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/LevenbergMarquardt/LevenbergMarquardt.h b/unsupported/Eigen/src/LevenbergMarquardt/LevenbergMarquardt.h
index f823ae0..4744801 100644
--- a/unsupported/Eigen/src/LevenbergMarquardt/LevenbergMarquardt.h
+++ b/unsupported/Eigen/src/LevenbergMarquardt/LevenbergMarquardt.h
@@ -20,6 +20,7 @@
 #define EIGEN_LEVENBERGMARQUARDT_H
 
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/MatrixFunctions/MatrixExponential.h b/unsupported/Eigen/src/MatrixFunctions/MatrixExponential.h
index ab6284a..8061c34 100644
--- a/unsupported/Eigen/src/MatrixFunctions/MatrixExponential.h
+++ b/unsupported/Eigen/src/MatrixFunctions/MatrixExponential.h
@@ -13,6 +13,7 @@
 
 #include "StemFunction.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/MatrixFunctions/MatrixFunction.h b/unsupported/Eigen/src/MatrixFunctions/MatrixFunction.h
index 8076bf5..ce7af5e 100644
--- a/unsupported/Eigen/src/MatrixFunctions/MatrixFunction.h
+++ b/unsupported/Eigen/src/MatrixFunctions/MatrixFunction.h
@@ -13,6 +13,7 @@
 #include "StemFunction.h"
 
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/MatrixFunctions/MatrixLogarithm.h b/unsupported/Eigen/src/MatrixFunctions/MatrixLogarithm.h
index 2036fe4..9234ae2 100644
--- a/unsupported/Eigen/src/MatrixFunctions/MatrixLogarithm.h
+++ b/unsupported/Eigen/src/MatrixFunctions/MatrixLogarithm.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_MATRIX_LOGARITHM
 #define EIGEN_MATRIX_LOGARITHM
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/MatrixFunctions/MatrixPower.h b/unsupported/Eigen/src/MatrixFunctions/MatrixPower.h
index aca717b..869f8a6 100644
--- a/unsupported/Eigen/src/MatrixFunctions/MatrixPower.h
+++ b/unsupported/Eigen/src/MatrixFunctions/MatrixPower.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_MATRIX_POWER
 #define EIGEN_MATRIX_POWER
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/MatrixFunctions/MatrixSquareRoot.h b/unsupported/Eigen/src/MatrixFunctions/MatrixSquareRoot.h
index 6c58cae..99b76d0 100644
--- a/unsupported/Eigen/src/MatrixFunctions/MatrixSquareRoot.h
+++ b/unsupported/Eigen/src/MatrixFunctions/MatrixSquareRoot.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_MATRIX_SQUARE_ROOT
 #define EIGEN_MATRIX_SQUARE_ROOT
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/MatrixFunctions/StemFunction.h b/unsupported/Eigen/src/MatrixFunctions/StemFunction.h
index 25a3ef2..afe1a33 100644
--- a/unsupported/Eigen/src/MatrixFunctions/StemFunction.h
+++ b/unsupported/Eigen/src/MatrixFunctions/StemFunction.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_STEM_FUNCTION
 #define EIGEN_STEM_FUNCTION
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/MoreVectorization/MathFunctions.h b/unsupported/Eigen/src/MoreVectorization/MathFunctions.h
index 9084298..4db1705 100644
--- a/unsupported/Eigen/src/MoreVectorization/MathFunctions.h
+++ b/unsupported/Eigen/src/MoreVectorization/MathFunctions.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_MOREVECTORIZATION_MATHFUNCTIONS_H
 #define EIGEN_MOREVECTORIZATION_MATHFUNCTIONS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/HybridNonLinearSolver.h b/unsupported/Eigen/src/NonLinearOptimization/HybridNonLinearSolver.h
index 4c38426..1e076ab 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/HybridNonLinearSolver.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/HybridNonLinearSolver.h
@@ -13,6 +13,7 @@
 #ifndef EIGEN_HYBRIDNONLINEARSOLVER_H
 #define EIGEN_HYBRIDNONLINEARSOLVER_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/LevenbergMarquardt.h b/unsupported/Eigen/src/NonLinearOptimization/LevenbergMarquardt.h
index a176c25..bdf8370 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/LevenbergMarquardt.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/LevenbergMarquardt.h
@@ -13,6 +13,7 @@
 #ifndef EIGEN_LEVENBERGMARQUARDT__H
 #define EIGEN_LEVENBERGMARQUARDT__H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/chkder.h b/unsupported/Eigen/src/NonLinearOptimization/chkder.h
index d0974a0..8d8f80c 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/chkder.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/chkder.h
@@ -1,6 +1,7 @@
 #define chkder_log10e 0.43429448190325182765
 #define chkder_factor 100.
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/covar.h b/unsupported/Eigen/src/NonLinearOptimization/covar.h
index 181c4f3..6f51fee 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/covar.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/covar.h
@@ -1,3 +1,4 @@
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/dogleg.h b/unsupported/Eigen/src/NonLinearOptimization/dogleg.h
index 7c170a2..0842ceb 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/dogleg.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/dogleg.h
@@ -1,3 +1,4 @@
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/fdjac1.h b/unsupported/Eigen/src/NonLinearOptimization/fdjac1.h
index 317b157..46bf088 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/fdjac1.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/fdjac1.h
@@ -1,3 +1,4 @@
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/lmpar.h b/unsupported/Eigen/src/NonLinearOptimization/lmpar.h
index 64af0fd..4b8e034 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/lmpar.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/lmpar.h
@@ -1,3 +1,4 @@
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/qrsolv.h b/unsupported/Eigen/src/NonLinearOptimization/qrsolv.h
index 1cdcd4e..2b1ce0b 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/qrsolv.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/qrsolv.h
@@ -1,3 +1,4 @@
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/r1mpyq.h b/unsupported/Eigen/src/NonLinearOptimization/r1mpyq.h
index 37ef258..9ea149f 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/r1mpyq.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/r1mpyq.h
@@ -1,3 +1,4 @@
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/r1updt.h b/unsupported/Eigen/src/NonLinearOptimization/r1updt.h
index 7b3a599..ee0b87a 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/r1updt.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/r1updt.h
@@ -1,3 +1,4 @@
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NonLinearOptimization/rwupdt.h b/unsupported/Eigen/src/NonLinearOptimization/rwupdt.h
index f9ca504..88011fc 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/rwupdt.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/rwupdt.h
@@ -1,3 +1,4 @@
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/NumericalDiff/NumericalDiff.h b/unsupported/Eigen/src/NumericalDiff/NumericalDiff.h
index daa4210..85acaa2 100644
--- a/unsupported/Eigen/src/NumericalDiff/NumericalDiff.h
+++ b/unsupported/Eigen/src/NumericalDiff/NumericalDiff.h
@@ -13,6 +13,7 @@
 #ifndef EIGEN_NUMERICAL_DIFF_H
 #define EIGEN_NUMERICAL_DIFF_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/Polynomials/Companion.h b/unsupported/Eigen/src/Polynomials/Companion.h
index 23c281a..9ce480e 100644
--- a/unsupported/Eigen/src/Polynomials/Companion.h
+++ b/unsupported/Eigen/src/Polynomials/Companion.h
@@ -14,6 +14,7 @@
 // * Eigen/Core
 // * Eigen/src/PolynomialSolver.h
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/Polynomials/PolynomialSolver.h b/unsupported/Eigen/src/Polynomials/PolynomialSolver.h
index 64cab12..9e25ec0 100644
--- a/unsupported/Eigen/src/Polynomials/PolynomialSolver.h
+++ b/unsupported/Eigen/src/Polynomials/PolynomialSolver.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_POLYNOMIAL_SOLVER_H
 #define EIGEN_POLYNOMIAL_SOLVER_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/Polynomials/PolynomialUtils.h b/unsupported/Eigen/src/Polynomials/PolynomialUtils.h
index 6af8613..99c49aa 100644
--- a/unsupported/Eigen/src/Polynomials/PolynomialUtils.h
+++ b/unsupported/Eigen/src/Polynomials/PolynomialUtils.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_POLYNOMIAL_UTILS_H
 #define EIGEN_POLYNOMIAL_UTILS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/Skyline/SkylineInplaceLU.h b/unsupported/Eigen/src/Skyline/SkylineInplaceLU.h
index ef90438..ba49cd9 100644
--- a/unsupported/Eigen/src/Skyline/SkylineInplaceLU.h
+++ b/unsupported/Eigen/src/Skyline/SkylineInplaceLU.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SKYLINEINPLACELU_H
 #define EIGEN_SKYLINEINPLACELU_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/Skyline/SkylineMatrix.h b/unsupported/Eigen/src/Skyline/SkylineMatrix.h
index 887bf83..4b2c852 100644
--- a/unsupported/Eigen/src/Skyline/SkylineMatrix.h
+++ b/unsupported/Eigen/src/Skyline/SkylineMatrix.h
@@ -13,6 +13,7 @@
 #include "SkylineStorage.h"
 #include "SkylineMatrixBase.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/Skyline/SkylineMatrixBase.h b/unsupported/Eigen/src/Skyline/SkylineMatrixBase.h
index 86fd10d..6a74609 100644
--- a/unsupported/Eigen/src/Skyline/SkylineMatrixBase.h
+++ b/unsupported/Eigen/src/Skyline/SkylineMatrixBase.h
@@ -12,6 +12,7 @@
 
 #include "SkylineUtil.h"
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/Skyline/SkylineProduct.h b/unsupported/Eigen/src/Skyline/SkylineProduct.h
index 03f4269..9defb14 100644
--- a/unsupported/Eigen/src/Skyline/SkylineProduct.h
+++ b/unsupported/Eigen/src/Skyline/SkylineProduct.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SKYLINEPRODUCT_H
 #define EIGEN_SKYLINEPRODUCT_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/Skyline/SkylineStorage.h b/unsupported/Eigen/src/Skyline/SkylineStorage.h
index 73b15a6..2b7ab21 100644
--- a/unsupported/Eigen/src/Skyline/SkylineStorage.h
+++ b/unsupported/Eigen/src/Skyline/SkylineStorage.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SKYLINE_STORAGE_H
 #define EIGEN_SKYLINE_STORAGE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/Skyline/SkylineUtil.h b/unsupported/Eigen/src/Skyline/SkylineUtil.h
index 47fb4e3..e467fee 100644
--- a/unsupported/Eigen/src/Skyline/SkylineUtil.h
+++ b/unsupported/Eigen/src/Skyline/SkylineUtil.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SKYLINEUTIL_H
 #define EIGEN_SKYLINEUTIL_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/SparseExtra/BlockSparseMatrix.h b/unsupported/Eigen/src/SparseExtra/BlockSparseMatrix.h
index 853fbb0..f8f9719 100644
--- a/unsupported/Eigen/src/SparseExtra/BlockSparseMatrix.h
+++ b/unsupported/Eigen/src/SparseExtra/BlockSparseMatrix.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_SPARSEBLOCKMATRIX_H
 #define EIGEN_SPARSEBLOCKMATRIX_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/SparseExtra/MarketIO.h b/unsupported/Eigen/src/SparseExtra/MarketIO.h
index 5c26133..6a0a7fb 100644
--- a/unsupported/Eigen/src/SparseExtra/MarketIO.h
+++ b/unsupported/Eigen/src/SparseExtra/MarketIO.h
@@ -14,6 +14,7 @@
 #include <iostream>
 #include <vector>
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen { 
diff --git a/unsupported/Eigen/src/SparseExtra/MatrixMarketIterator.h b/unsupported/Eigen/src/SparseExtra/MatrixMarketIterator.h
index 12e4cb4..e6c8a0f 100644
--- a/unsupported/Eigen/src/SparseExtra/MatrixMarketIterator.h
+++ b/unsupported/Eigen/src/SparseExtra/MatrixMarketIterator.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_BROWSE_MATRICES_H
 #define EIGEN_BROWSE_MATRICES_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SparseExtra/RandomSetter.h b/unsupported/Eigen/src/SparseExtra/RandomSetter.h
index 9476ee3..8150243 100644
--- a/unsupported/Eigen/src/SparseExtra/RandomSetter.h
+++ b/unsupported/Eigen/src/SparseExtra/RandomSetter.h
@@ -16,6 +16,7 @@
 namespace google {}
 #endif
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SparseExtra/SparseInverse.h b/unsupported/Eigen/src/SparseExtra/SparseInverse.h
index c8a4920..23a5fc4 100644
--- a/unsupported/Eigen/src/SparseExtra/SparseInverse.h
+++ b/unsupported/Eigen/src/SparseExtra/SparseInverse.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPARSEINVERSE_H
 #define EIGEN_SPARSEINVERSE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 #include "../../../../Eigen/Sparse"
diff --git a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsArrayAPI.h b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsArrayAPI.h
index 7fa85e2..f5ee500 100644
--- a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsArrayAPI.h
+++ b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsArrayAPI.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_BESSELFUNCTIONS_ARRAYAPI_H
 #define EIGEN_BESSELFUNCTIONS_ARRAYAPI_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsBFloat16.h b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsBFloat16.h
index c016004..45b70b4 100644
--- a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsBFloat16.h
+++ b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsBFloat16.h
@@ -8,6 +8,7 @@
 #ifndef EIGEN_BESSELFUNCTIONS_BFLOAT16_H
 #define EIGEN_BESSELFUNCTIONS_BFLOAT16_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsFunctors.h b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsFunctors.h
index 2d6b386..da7a22a 100644
--- a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsFunctors.h
+++ b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsFunctors.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_BESSELFUNCTIONS_FUNCTORS_H
 #define EIGEN_BESSELFUNCTIONS_FUNCTORS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsHalf.h b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsHalf.h
index 4d50503..ac1ea28 100644
--- a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsHalf.h
+++ b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsHalf.h
@@ -8,6 +8,7 @@
 #ifndef EIGEN_BESSELFUNCTIONS_HALF_H
 #define EIGEN_BESSELFUNCTIONS_HALF_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsImpl.h b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsImpl.h
index b600079..166b1da 100644
--- a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsImpl.h
+++ b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsImpl.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_BESSEL_FUNCTIONS_H
 #define EIGEN_BESSEL_FUNCTIONS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsPacketMath.h b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsPacketMath.h
index ac8c57b..95d0137 100644
--- a/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsPacketMath.h
+++ b/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsPacketMath.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_BESSELFUNCTIONS_PACKETMATH_H
 #define EIGEN_BESSELFUNCTIONS_PACKETMATH_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/HipVectorCompatibility.h b/unsupported/Eigen/src/SpecialFunctions/HipVectorCompatibility.h
index bc6f912..1aa8263 100644
--- a/unsupported/Eigen/src/SpecialFunctions/HipVectorCompatibility.h
+++ b/unsupported/Eigen/src/SpecialFunctions/HipVectorCompatibility.h
@@ -5,6 +5,7 @@
   template <typename, typename, unsigned int> struct Scalar_accessor;
 }   // end namespace hip_impl
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsArrayAPI.h b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsArrayAPI.h
index 4429333..bcae4a5 100644
--- a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsArrayAPI.h
+++ b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsArrayAPI.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_SPECIALFUNCTIONS_ARRAYAPI_H
 #define EIGEN_SPECIALFUNCTIONS_ARRAYAPI_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsBFloat16.h b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsBFloat16.h
index 56e0b95..802b818 100644
--- a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsBFloat16.h
+++ b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsBFloat16.h
@@ -8,6 +8,7 @@
 #ifndef EIGEN_SPECIALFUNCTIONS_BFLOAT16_H
 #define EIGEN_SPECIALFUNCTIONS_BFLOAT16_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsFunctors.h b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsFunctors.h
index 0955c43..7723831 100644
--- a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsFunctors.h
+++ b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsFunctors.h
@@ -11,6 +11,7 @@
 #ifndef EIGEN_SPECIALFUNCTIONS_FUNCTORS_H
 #define EIGEN_SPECIALFUNCTIONS_FUNCTORS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsHalf.h b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsHalf.h
index 4b8a35f..195a9c7 100644
--- a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsHalf.h
+++ b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsHalf.h
@@ -8,6 +8,7 @@
 #ifndef EIGEN_SPECIALFUNCTIONS_HALF_H
 #define EIGEN_SPECIALFUNCTIONS_HALF_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsImpl.h b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsImpl.h
index aa514b4..b8b07f5 100644
--- a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsImpl.h
+++ b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsImpl.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPECIAL_FUNCTIONS_H
 #define EIGEN_SPECIAL_FUNCTIONS_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsPacketMath.h b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsPacketMath.h
index 651457f..a170082 100644
--- a/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsPacketMath.h
+++ b/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsPacketMath.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPECIALFUNCTIONS_PACKETMATH_H
 #define EIGEN_SPECIALFUNCTIONS_PACKETMATH_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 namespace Eigen {
diff --git a/unsupported/Eigen/src/Splines/Spline.h b/unsupported/Eigen/src/Splines/Spline.h
index ce786ee..486a797 100644
--- a/unsupported/Eigen/src/Splines/Spline.h
+++ b/unsupported/Eigen/src/Splines/Spline.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPLINE_H
 #define EIGEN_SPLINE_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 #include "SplineFwd.h"
diff --git a/unsupported/Eigen/src/Splines/SplineFitting.h b/unsupported/Eigen/src/Splines/SplineFitting.h
index fe70658..8f4c1aa 100644
--- a/unsupported/Eigen/src/Splines/SplineFitting.h
+++ b/unsupported/Eigen/src/Splines/SplineFitting.h
@@ -15,6 +15,7 @@
 #include <numeric>
 #include <vector>
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 
 #include "SplineFwd.h"
diff --git a/unsupported/Eigen/src/Splines/SplineFwd.h b/unsupported/Eigen/src/Splines/SplineFwd.h
index 2cc0977..76c9037 100644
--- a/unsupported/Eigen/src/Splines/SplineFwd.h
+++ b/unsupported/Eigen/src/Splines/SplineFwd.h
@@ -10,6 +10,7 @@
 #ifndef EIGEN_SPLINES_FWD_H
 #define EIGEN_SPLINES_FWD_H
 
+// IWYU pragma: private
 #include "./InternalHeaderCheck.h"
 #include "../../../../Eigen/Core"