make/hotspot/lib/CompileJvm.gmk - openjdk/jdk25u - Git at Google

 #
 # Copyright (c) 2013, 2025, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License version 2 only, as
 # published by the Free Software Foundation.  Oracle designates this
 # particular file as subject to the "Classpath" exception as provided
 # by Oracle in the LICENSE file that accompanied this code.
 #
 # This code is distributed in the hope that it will be useful, but WITHOUT
 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 # version 2 for more details (a copy is included in the LICENSE file that
 # accompanied this code).
 #
 # You should have received a copy of the GNU General Public License version
 # 2 along with this work; if not, write to the Free Software Foundation,
 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 #
 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 # or visit www.oracle.com if you need additional information or have any
 # questions.
 #

 include MakeIncludeStart.gmk
 ifeq ($(INCLUDE), true)

 ################################################################################

 include CopyFiles.gmk

 # Include support files that will setup compiler flags due to the selected
 # jvm feature set, specific file overrides, and general flags.
 include lib/JvmFeatures.gmk
 include lib/JvmOverrideFiles.gmk
 include lib/JvmFlags.gmk

 ################################################################################
 # Setup compilation of the main Hotspot native library (libjvm).

 JVM_OUTPUTDIR := $(JVM_VARIANT_OUTPUTDIR)/libjvm

 ################################################################################
 # Platform independent setup

 JVM_LDFLAGS += \
     $(SHARED_LIBRARY_FLAGS) \
     $(JVM_LDFLAGS_FEATURES) \
     $(EXTRA_LDFLAGS) \
     #

 JVM_ASFLAGS += $(EXTRA_ASFLAGS)

 JVM_ASFLAGS += \
         -I$(TOPDIR)/src/hotspot/os_cpu/$(HOTSPOT_TARGET_OS)_$(HOTSPOT_TARGET_CPU_ARCH) \
         -I$(TOPDIR)/src/hotspot/os/$(HOTSPOT_TARGET_OS) \
         -I$(TOPDIR)/src/hotspot/os/$(HOTSPOT_TARGET_OS_TYPE) \
         #

 JVM_LIBS += \
     $(JVM_LIBS_FEATURES) \
     #

 # These files and directories are always excluded
 JVM_EXCLUDE_FILES += args.cc
 JVM_EXCLUDES += adlc

 # Needed by abstract_vm_version.cpp
 ifeq ($(call isTargetCpu, x86_64), true)
   OPENJDK_TARGET_CPU_VM_VERSION := amd64
 else
   OPENJDK_TARGET_CPU_VM_VERSION := $(OPENJDK_TARGET_CPU)
 endif

 ifeq ($(VERSION_BUILD), )
   # Hotspot cannot handle an empty build number
   VERSION_BUILD := 0
 endif

 ifeq ($(HOTSPOT_BUILD_TIME), )
   HOTSPOT_BUILD_TIME := $(call EpochToISO8601, $(shell $(DATE) +"%s"))
 endif

 CFLAGS_VM_VERSION := \
     $(VERSION_CFLAGS) \
     -DHOTSPOT_VERSION_STRING='"$(VERSION_STRING)"' \
     -DDEBUG_LEVEL='"$(DEBUG_LEVEL)"' \
     -DHOTSPOT_VM_DISTRO='"$(HOTSPOT_VM_DISTRO)"' \
     -DCPU='"$(OPENJDK_TARGET_CPU_VM_VERSION)"' \
     -DHOTSPOT_BUILD_TIME='"$(HOTSPOT_BUILD_TIME)"' \
     -DJVM_VARIANT='"$(JVM_VARIANT)"' \
     #

 ################################################################################
 # Disabled warnings

 DISABLED_WARNINGS_gcc := array-bounds comment delete-non-virtual-dtor \
     empty-body format-zero-length implicit-fallthrough int-in-bool-context \
     maybe-uninitialized missing-field-initializers \
     shift-negative-value unknown-pragmas unused-but-set-variable \
     unused-local-typedefs unused-variable

 DISABLED_WARNINGS_clang := delete-non-abstract-non-virtual-dtor missing-braces \
     sometimes-uninitialized unknown-pragmas unused-but-set-variable \
     unused-function unused-local-typedef unused-private-field unused-variable

 ifneq ($(DEBUG_LEVEL), release)
   # Assert macro gives warning
   DISABLED_WARNINGS_clang += tautological-constant-out-of-range-compare
   # Some reasonable asserts produce warnings on GCC <= 7
   DISABLED_WARNINGS_gcc += strict-overflow
 endif

 DISABLED_WARNINGS_microsoft := 4624 4244 4291 4146 4127 4722

 ################################################################################
 # Platform specific setup

 # ARM source selection

 ifeq ($(call And, $(call isTargetOs, linux) $(call isTargetCpu, arm)), true)
   JVM_EXCLUDE_PATTERNS += arm_64

 else ifeq ($(call And, $(call isTargetOs, linux) $(call isTargetCpu, aarch64)), true)
   # For 64-bit arm builds, we use the 64 bit hotspot/src/cpu/arm
   # hotspot sources if HOTSPOT_TARGET_CPU_ARCH is set to arm.
   # Exclude the aarch64 and 32 bit arm files for this build.
   ifeq ($(HOTSPOT_TARGET_CPU_ARCH), arm)
     JVM_EXCLUDE_PATTERNS += arm_32 aarch64
   endif
 endif

 JVM_PRECOMPILED_HEADER := $(TOPDIR)/src/hotspot/share/precompiled/precompiled.hpp

 ifeq ($(call isTargetCpu, x86), true)
   JVM_EXCLUDE_PATTERNS += x86_64
 else ifeq ($(call isTargetCpu, x86_64), true)
   JVM_EXCLUDE_PATTERNS += x86_32
 endif

 JVM_OPTIMIZATION ?= HIGHEST_JVM

 # Need to set JVM_STRIPFLAGS to the default value from SPEC since the STRIPFLAGS
 # parameter to SetupJdkLibrary allows an empty value to override the
 # default.
 JVM_STRIPFLAGS ?= $(STRIPFLAGS)

 # This source set is reused so save in cache.
 $(call FillFindCache, $(JVM_SRC_DIRS))

 ifeq ($(call isTargetOs, windows), true)
   ifeq ($(STATIC_LIBS), true)
     WIN_EXPORT_FILE := $(JVM_OUTPUTDIR)/static-win-exports.def
   else
     WIN_EXPORT_FILE := $(JVM_OUTPUTDIR)/win-exports.def
   endif

   JVM_LDFLAGS += -def:$(WIN_EXPORT_FILE)
 endif

 ifeq ($(call isTargetOs, linux), true)
   HOTSPOT_VERSION_SCRIPT := $(TOPDIR)/make/data/hotspot-symbols/version-script-$(TOOLCHAIN_TYPE).txt

   JVM_LDFLAGS += -Wl,-version-script=$(HOTSPOT_VERSION_SCRIPT)
 endif

 ################################################################################
 ## Build libjvm
 ################################################################################

 $(eval $(call SetupJdkLibrary, BUILD_LIBJVM, \
     NAME := jvm, \
     LINK_TYPE := C++, \
     OUTPUT_DIR := $(JVM_LIB_OUTPUTDIR), \
     SRC := $(JVM_SRC_DIRS), \
     EXCLUDES := $(JVM_EXCLUDES), \
     EXCLUDE_FILES := $(JVM_EXCLUDE_FILES), \
     EXCLUDE_PATTERNS := $(JVM_EXCLUDE_PATTERNS), \
     DEFAULT_CFLAGS := false, \
     CFLAGS := $(JVM_CFLAGS), \
     abstract_vm_version.cpp_CXXFLAGS := $(CFLAGS_VM_VERSION), \
     arguments.cpp_CXXFLAGS := $(CFLAGS_VM_VERSION), \
     DISABLED_WARNINGS_gcc := $(DISABLED_WARNINGS_gcc), \
     DISABLED_WARNINGS_gcc_ad_$(HOTSPOT_TARGET_CPU_ARCH).cpp := nonnull, \
     DISABLED_WARNINGS_gcc_bytecodeInterpreter.cpp := unused-label, \
     DISABLED_WARNINGS_gcc_c1_Runtime1_aarch64.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_cgroupV1Subsystem_linux.cpp := address, \
     DISABLED_WARNINGS_gcc_cgroupV2Subsystem_linux.cpp := address, \
     DISABLED_WARNINGS_gcc_g1FreeIdSet.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_handshake.cpp := stringop-overflow, \
     DISABLED_WARNINGS_gcc_interp_masm_x86.cpp := uninitialized, \
     DISABLED_WARNINGS_gcc_javaClasses.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_jfrChunkWriter.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_jfrMemorySizer.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_jfrTraceIdKlassQueue.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_jvmciCodeInstaller.cpp := stringop-overflow, \
     DISABLED_WARNINGS_gcc_jvmFlag.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_jvmtiTagMap.cpp := stringop-overflow, \
     DISABLED_WARNINGS_gcc_macroAssembler_ppc_sha.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_postaloc.cpp := address, \
     DISABLED_WARNINGS_gcc_shenandoahLock.cpp := stringop-overflow, \
     DISABLED_WARNINGS_gcc_stubGenerator_s390.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_synchronizer.cpp := stringop-overflow, \
     DISABLED_WARNINGS_gcc_templateInterpreterGenerator_x86.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_xGlobals_ppc.cpp := unused-const-variable, \
     DISABLED_WARNINGS_clang := $(DISABLED_WARNINGS_clang), \
     DISABLED_WARNINGS_clang_arguments.cpp := missing-field-initializers, \
     DISABLED_WARNINGS_clang_codeBuffer.cpp := tautological-undefined-compare, \
     DISABLED_WARNINGS_clang_directivesParser.cpp := missing-field-initializers, \
     DISABLED_WARNINGS_clang_g1ParScanThreadState.cpp := delete-abstract-non-virtual-dtor, \
     DISABLED_WARNINGS_clang_g1YoungGCPostEvacuateTasks.cpp := delete-abstract-non-virtual-dtor, \
     DISABLED_WARNINGS_clang_management.cpp := missing-field-initializers, \
     DISABLED_WARNINGS_clang_notificationThread.cpp := bitwise-instead-of-logical, \
     DISABLED_WARNINGS_clang_os_posix.cpp := mismatched-tags missing-field-initializers, \
     DISABLED_WARNINGS_clang_aix_os_posix.cpp := format-nonliteral, \
     DISABLED_WARNINGS_clang_postaloc.cpp := tautological-undefined-compare, \
     DISABLED_WARNINGS_clang_serviceThread.cpp := bitwise-instead-of-logical, \
     DISABLED_WARNINGS_clang_vm_version_x86.cpp := missing-field-initializers, \
     DISABLED_WARNINGS_clang_zTracer.cpp := undefined-var-template, \
     DISABLED_WARNINGS_clang_aix_debug.cpp := format-nonliteral, \
     DISABLED_WARNINGS_clang_aix_jvm.cpp := format-nonliteral, \
     DISABLED_WARNINGS_clang_aix_osThread_aix.cpp := tautological-undefined-compare, \
     DISABLED_WARNINGS_microsoft := $(DISABLED_WARNINGS_microsoft), \
     ASFLAGS := $(JVM_ASFLAGS), \
     LD_SET_ORIGIN := false, \
     DEFAULT_LDFLAGS := false, \
     LDFLAGS := $(JVM_LDFLAGS), \
     LIBS := $(JVM_LIBS), \
     OPTIMIZATION := $(JVM_OPTIMIZATION), \
     OBJECT_DIR := $(JVM_OUTPUTDIR)/objs, \
     STRIPFLAGS := $(JVM_STRIPFLAGS), \
     EMBED_MANIFEST := true, \
     RC_FILEDESC := $(HOTSPOT_VM_DISTRO) $(OPENJDK_TARGET_CPU_BITS)-Bit $(JVM_VARIANT) VM, \
     PRECOMPILED_HEADER := $(JVM_PRECOMPILED_HEADER), \
     PRECOMPILED_HEADER_EXCLUDE := $(JVM_PRECOMPILED_HEADER_EXCLUDE), \
 ))

 ifeq ($(call isTargetOs, windows), true)
   # The following lines create a list of vftable symbols to be filtered out of
   # the symbol file. Removing this line causes the linker to complain about too
   # many (> 64K) symbols, so the _guess_ is that this line is here to keep down
   # the number of exported symbols below that limit.
   #
   # Some usages of C++ lambdas require the vftable symbol of classes that use
   # the lambda type as a template parameter. The usage of those classes won't
   # link if their vftable symbols are removed. That's why there's an exception
   # for vftable symbols containing the string 'lambda'.
   #
   # A very simple example of a lambda usage that fails if the lambda vftable
   # symbols are missing in the symbol file:
   #
   # #include <functional>
   # std::function<void()> f = [](){}
   FILTER_SYMBOLS_AWK_SCRIPT := \
       '{ \
         if ($$7 ~ /\?\?_7.*@@6B@/ && $$7 !~ /type_info/ && $$7 !~ /lambda/) print "  " $$7; \
       }'

   # A more correct solution would be to send BUILD_LIBJVM_ALL_OBJS instead of
   # cd && *.obj, but this will result in very long command lines, which could be
   # problematic.
   $(WIN_EXPORT_FILE): $(BUILD_LIBJVM_ALL_OBJS)
 	$(call LogInfo, Generating list of symbols to export from object files)
 	$(call MakeDir, $(@D))
 	$(ECHO) "EXPORTS" > $@.tmp
 	$(CD) $(BUILD_LIBJVM_OBJECT_DIR) && \
 	    $(DUMPBIN) -symbols *$(OBJ_SUFFIX) | $(AWK) $(FILTER_SYMBOLS_AWK_SCRIPT) | $(SORT) -u >> $@.tmp
 	$(RM) $@
 	$(MV) $@.tmp $@

   $(BUILD_LIBJVM_TARGET): $(WIN_EXPORT_FILE)
 endif

 # Always recompile abstract_vm_version.cpp if libjvm needs to be relinked. This ensures
 # that the internal vm version is updated as it relies on __DATE__ and __TIME__
 # macros.
 ABSTRACT_VM_VERSION_OBJ := $(JVM_OUTPUTDIR)/objs/abstract_vm_version$(OBJ_SUFFIX)
 $(ABSTRACT_VM_VERSION_OBJ): $(filter-out $(ABSTRACT_VM_VERSION_OBJ), \
     $(BUILD_LIBJVM_TARGET_DEPS))

 ifneq ($(GENERATE_COMPILE_COMMANDS_ONLY), true)
   ifeq ($(call isTargetOs, windows), true)
     # It doesn't matter which jvm.lib file gets exported, but we need
     # to pick just one.
     ifeq ($(JVM_VARIANT), $(JVM_VARIANT_MAIN))
       $(eval $(call SetupCopyFiles, COPY_JVM_LIB, \
           DEST := $(LIB_OUTPUTDIR), \
           FILES := $(BUILD_LIBJVM_IMPORT_LIBRARY), \
       ))
       TARGETS += $(COPY_JVM_LIB)
     endif
   endif
 endif

 # AIX warning explanation:
 # 1500-010  : (W) WARNING in ...: Infinite loop.  Program may not stop.
 #             There are several infinite loops in the vm, so better suppress.
 # 1540-0198 : (W) The omitted keyword "private" is assumed for base class "...".
 # 1540-0216 : (W) An expression of type .. cannot be converted to type ..
 #             In hotspot this fires for functionpointer to pointer conversions
 # 1540-1088 : (W) The exception specification is being ignored.
 #             In hotspot this is caused by throw() in declaration of new() in nmethod.hpp.
 # 1540-1090 : (I) The destructor of "..." might not be called.
 # 1540-1639 : (I) The behavior of long type bit fields has changed ...

 TARGETS += $(BUILD_LIBJVM)

 ################################################################################
 # Hotspot disallows the use of global operators 'new' and 'delete'. This build
 # time check helps enforce this requirement. If you trigger this check and the
 # reference is not obvious from the source, GNU objdump can be used to help find
 # the reference if compiled with GCC:
 #
 # objdump -lrdSC <path/to/file.o>
 #
 # -C demangle
 # -d disassemble
 # -r print relocation entries, interspersed with the disassembly
 # -S print source code, intermixed with disassembly
 # -l include filenames and line numbers
 #
 # Search the output for the operator(s) of interest, to see where they are
 # referenced.
 #
 # When a reference to the global 'operator delete' is reported, it might be
 # due to a "deleting destructor".  In this case, objdump may show the
 # reference to be associated with but not actually in a destructor.  A
 # deleting destructor is automatically generated for a class whose destructor
 # is virtual.  A deleting destructor requires an accessible 'operator delete'
 # for the associated class.  If the class doesn't provide a more specific
 # declaration (either directly or by inheriting from a class that provides
 # one) then the global definition will be used, triggering this check.

 ifneq ($(GENERATE_COMPILE_COMMANDS_ONLY), true)
   ifneq ($(filter $(TOOLCHAIN_TYPE), gcc clang), )

     DEMANGLED_REGEXP := [^:]operator (new|delete)

     # Running c++filt to find offending symbols in all files is too expensive,
     # so use mangled names when looking for symbols.
     # Save the demangling for when something is actually found.
     MANGLED_SYMS := \
         _ZdaPv \
         _ZdlPv \
         _Znam \
         _Znwm \
         #
     UNDEF_PATTERN := ' U '

     define SetupOperatorNewDeleteCheck
         $1.op_check: $1
 	  $$(call ExecuteWithLog, $1.op_check, \
 	      $$(NM) $$(NMFLAGS) $$<  2>&1 | $$(GREP) $$(addprefix -e , $$(MANGLED_SYMS)) | $$(GREP) $$(UNDEF_PATTERN) > $1.op_check || true)
 	  if [ -s $1.op_check ]; then \
 	    $$(ECHO) "$$(notdir $$<): Error: Use of global operators new and delete is not allowed in Hotspot:"; \
 	    $$(NM) $$(NMFLAGS) $$< | $$(CXXFILT) | $$(EGREP) '$$(DEMANGLED_REGEXP)' | $$(GREP) $$(UNDEF_PATTERN); \
 	    $$(ECHO) "See: $$(TOPDIR)/make/hotspot/lib/CompileJvm.gmk"; \
 	    exit 1; \
 	  fi

       TARGETS += $1.op_check
     endef

     $(foreach o, $(BUILD_LIBJVM_ALL_OBJS), $(eval $(call SetupOperatorNewDeleteCheck,$o)))
   endif
 endif

 ################################################################################

 endif # include guard
 include MakeIncludeEnd.gmk
	#
	# Copyright (c) 2013, 2025, Oracle and/or its affiliates. All rights reserved.
	# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	#
	# This code is free software; you can redistribute it and/or modify it
	# under the terms of the GNU General Public License version 2 only, as
	# published by the Free Software Foundation. Oracle designates this
	# particular file as subject to the "Classpath" exception as provided
	# by Oracle in the LICENSE file that accompanied this code.
	#
	# This code is distributed in the hope that it will be useful, but WITHOUT
	# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	# version 2 for more details (a copy is included in the LICENSE file that
	# accompanied this code).
	#
	# You should have received a copy of the GNU General Public License version
	# 2 along with this work; if not, write to the Free Software Foundation,
	# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	#
	# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	# or visit www.oracle.com if you need additional information or have any
	# questions.
	#

	include MakeIncludeStart.gmk
	ifeq ($(INCLUDE), true)

	################################################################################

	include CopyFiles.gmk

	# Include support files that will setup compiler flags due to the selected
	# jvm feature set, specific file overrides, and general flags.
	include lib/JvmFeatures.gmk
	include lib/JvmOverrideFiles.gmk
	include lib/JvmFlags.gmk

	################################################################################
	# Setup compilation of the main Hotspot native library (libjvm).

	JVM_OUTPUTDIR := $(JVM_VARIANT_OUTPUTDIR)/libjvm

	################################################################################
	# Platform independent setup

	JVM_LDFLAGS += \
	$(SHARED_LIBRARY_FLAGS) \
	$(JVM_LDFLAGS_FEATURES) \
	$(EXTRA_LDFLAGS) \
	#

	JVM_ASFLAGS += $(EXTRA_ASFLAGS)

	JVM_ASFLAGS += \
	-I$(TOPDIR)/src/hotspot/os_cpu/$(HOTSPOT_TARGET_OS)_$(HOTSPOT_TARGET_CPU_ARCH) \
	-I$(TOPDIR)/src/hotspot/os/$(HOTSPOT_TARGET_OS) \
	-I$(TOPDIR)/src/hotspot/os/$(HOTSPOT_TARGET_OS_TYPE) \
	#

	JVM_LIBS += \
	$(JVM_LIBS_FEATURES) \
	#

	# These files and directories are always excluded
	JVM_EXCLUDE_FILES += args.cc
	JVM_EXCLUDES += adlc

	# Needed by abstract_vm_version.cpp
	ifeq ($(call isTargetCpu, x86_64), true)
	OPENJDK_TARGET_CPU_VM_VERSION := amd64
	else
	OPENJDK_TARGET_CPU_VM_VERSION := $(OPENJDK_TARGET_CPU)
	endif

	ifeq ($(VERSION_BUILD), )
	# Hotspot cannot handle an empty build number
	VERSION_BUILD := 0
	endif

	ifeq ($(HOTSPOT_BUILD_TIME), )
	HOTSPOT_BUILD_TIME := $(call EpochToISO8601, $(shell $(DATE) +"%s"))
	endif

	CFLAGS_VM_VERSION := \
	$(VERSION_CFLAGS) \
	-DHOTSPOT_VERSION_STRING='"$(VERSION_STRING)"' \
	-DDEBUG_LEVEL='"$(DEBUG_LEVEL)"' \
	-DHOTSPOT_VM_DISTRO='"$(HOTSPOT_VM_DISTRO)"' \
	-DCPU='"$(OPENJDK_TARGET_CPU_VM_VERSION)"' \
	-DHOTSPOT_BUILD_TIME='"$(HOTSPOT_BUILD_TIME)"' \
	-DJVM_VARIANT='"$(JVM_VARIANT)"' \
	#

	################################################################################
	# Disabled warnings

	DISABLED_WARNINGS_gcc := array-bounds comment delete-non-virtual-dtor \
	empty-body format-zero-length implicit-fallthrough int-in-bool-context \
	maybe-uninitialized missing-field-initializers \
	shift-negative-value unknown-pragmas unused-but-set-variable \
	unused-local-typedefs unused-variable

	DISABLED_WARNINGS_clang := delete-non-abstract-non-virtual-dtor missing-braces \
	sometimes-uninitialized unknown-pragmas unused-but-set-variable \
	unused-function unused-local-typedef unused-private-field unused-variable

	ifneq ($(DEBUG_LEVEL), release)
	# Assert macro gives warning
	DISABLED_WARNINGS_clang += tautological-constant-out-of-range-compare
	# Some reasonable asserts produce warnings on GCC <= 7
	DISABLED_WARNINGS_gcc += strict-overflow
	endif

	DISABLED_WARNINGS_microsoft := 4624 4244 4291 4146 4127 4722

	################################################################################
	# Platform specific setup

	# ARM source selection

	ifeq ($(call And, $(call isTargetOs, linux) $(call isTargetCpu, arm)), true)
	JVM_EXCLUDE_PATTERNS += arm_64

	else ifeq ($(call And, $(call isTargetOs, linux) $(call isTargetCpu, aarch64)), true)
	# For 64-bit arm builds, we use the 64 bit hotspot/src/cpu/arm
	# hotspot sources if HOTSPOT_TARGET_CPU_ARCH is set to arm.
	# Exclude the aarch64 and 32 bit arm files for this build.
	ifeq ($(HOTSPOT_TARGET_CPU_ARCH), arm)
	JVM_EXCLUDE_PATTERNS += arm_32 aarch64
	endif
	endif

	JVM_PRECOMPILED_HEADER := $(TOPDIR)/src/hotspot/share/precompiled/precompiled.hpp

	ifeq ($(call isTargetCpu, x86), true)
	JVM_EXCLUDE_PATTERNS += x86_64
	else ifeq ($(call isTargetCpu, x86_64), true)
	JVM_EXCLUDE_PATTERNS += x86_32
	endif

	JVM_OPTIMIZATION ?= HIGHEST_JVM

	# Need to set JVM_STRIPFLAGS to the default value from SPEC since the STRIPFLAGS
	# parameter to SetupJdkLibrary allows an empty value to override the
	# default.
	JVM_STRIPFLAGS ?= $(STRIPFLAGS)

	# This source set is reused so save in cache.
	$(call FillFindCache, $(JVM_SRC_DIRS))

	ifeq ($(call isTargetOs, windows), true)
	ifeq ($(STATIC_LIBS), true)
	WIN_EXPORT_FILE := $(JVM_OUTPUTDIR)/static-win-exports.def
	else
	WIN_EXPORT_FILE := $(JVM_OUTPUTDIR)/win-exports.def
	endif

	JVM_LDFLAGS += -def:$(WIN_EXPORT_FILE)
	endif

	ifeq ($(call isTargetOs, linux), true)
	HOTSPOT_VERSION_SCRIPT := $(TOPDIR)/make/data/hotspot-symbols/version-script-$(TOOLCHAIN_TYPE).txt

	JVM_LDFLAGS += -Wl,-version-script=$(HOTSPOT_VERSION_SCRIPT)
	endif

	################################################################################
	## Build libjvm
	################################################################################

	$(eval $(call SetupJdkLibrary, BUILD_LIBJVM, \
	NAME := jvm, \
	LINK_TYPE := C++, \
	OUTPUT_DIR := $(JVM_LIB_OUTPUTDIR), \
	SRC := $(JVM_SRC_DIRS), \
	EXCLUDES := $(JVM_EXCLUDES), \
	EXCLUDE_FILES := $(JVM_EXCLUDE_FILES), \
	EXCLUDE_PATTERNS := $(JVM_EXCLUDE_PATTERNS), \
	DEFAULT_CFLAGS := false, \
	CFLAGS := $(JVM_CFLAGS), \
	abstract_vm_version.cpp_CXXFLAGS := $(CFLAGS_VM_VERSION), \
	arguments.cpp_CXXFLAGS := $(CFLAGS_VM_VERSION), \
	DISABLED_WARNINGS_gcc := $(DISABLED_WARNINGS_gcc), \
	DISABLED_WARNINGS_gcc_ad_$(HOTSPOT_TARGET_CPU_ARCH).cpp := nonnull, \
	DISABLED_WARNINGS_gcc_bytecodeInterpreter.cpp := unused-label, \
	DISABLED_WARNINGS_gcc_c1_Runtime1_aarch64.cpp := unused-const-variable, \
	DISABLED_WARNINGS_gcc_cgroupV1Subsystem_linux.cpp := address, \
	DISABLED_WARNINGS_gcc_cgroupV2Subsystem_linux.cpp := address, \
	DISABLED_WARNINGS_gcc_g1FreeIdSet.cpp := unused-const-variable, \
	DISABLED_WARNINGS_gcc_handshake.cpp := stringop-overflow, \
	DISABLED_WARNINGS_gcc_interp_masm_x86.cpp := uninitialized, \
	DISABLED_WARNINGS_gcc_javaClasses.cpp := unused-const-variable, \
	DISABLED_WARNINGS_gcc_jfrChunkWriter.cpp := unused-const-variable, \
	DISABLED_WARNINGS_gcc_jfrMemorySizer.cpp := unused-const-variable, \
	DISABLED_WARNINGS_gcc_jfrTraceIdKlassQueue.cpp := unused-const-variable, \
	DISABLED_WARNINGS_gcc_jvmciCodeInstaller.cpp := stringop-overflow, \
	DISABLED_WARNINGS_gcc_jvmFlag.cpp := unused-const-variable, \
	DISABLED_WARNINGS_gcc_jvmtiTagMap.cpp := stringop-overflow, \
	DISABLED_WARNINGS_gcc_macroAssembler_ppc_sha.cpp := unused-const-variable, \
	DISABLED_WARNINGS_gcc_postaloc.cpp := address, \
	DISABLED_WARNINGS_gcc_shenandoahLock.cpp := stringop-overflow, \
	DISABLED_WARNINGS_gcc_stubGenerator_s390.cpp := unused-const-variable, \
	DISABLED_WARNINGS_gcc_synchronizer.cpp := stringop-overflow, \
	DISABLED_WARNINGS_gcc_templateInterpreterGenerator_x86.cpp := unused-const-variable, \
	DISABLED_WARNINGS_gcc_xGlobals_ppc.cpp := unused-const-variable, \
	DISABLED_WARNINGS_clang := $(DISABLED_WARNINGS_clang), \
	DISABLED_WARNINGS_clang_arguments.cpp := missing-field-initializers, \
	DISABLED_WARNINGS_clang_codeBuffer.cpp := tautological-undefined-compare, \
	DISABLED_WARNINGS_clang_directivesParser.cpp := missing-field-initializers, \
	DISABLED_WARNINGS_clang_g1ParScanThreadState.cpp := delete-abstract-non-virtual-dtor, \
	DISABLED_WARNINGS_clang_g1YoungGCPostEvacuateTasks.cpp := delete-abstract-non-virtual-dtor, \
	DISABLED_WARNINGS_clang_management.cpp := missing-field-initializers, \
	DISABLED_WARNINGS_clang_notificationThread.cpp := bitwise-instead-of-logical, \
	DISABLED_WARNINGS_clang_os_posix.cpp := mismatched-tags missing-field-initializers, \
	DISABLED_WARNINGS_clang_aix_os_posix.cpp := format-nonliteral, \
	DISABLED_WARNINGS_clang_postaloc.cpp := tautological-undefined-compare, \
	DISABLED_WARNINGS_clang_serviceThread.cpp := bitwise-instead-of-logical, \
	DISABLED_WARNINGS_clang_vm_version_x86.cpp := missing-field-initializers, \
	DISABLED_WARNINGS_clang_zTracer.cpp := undefined-var-template, \
	DISABLED_WARNINGS_clang_aix_debug.cpp := format-nonliteral, \
	DISABLED_WARNINGS_clang_aix_jvm.cpp := format-nonliteral, \
	DISABLED_WARNINGS_clang_aix_osThread_aix.cpp := tautological-undefined-compare, \
	DISABLED_WARNINGS_microsoft := $(DISABLED_WARNINGS_microsoft), \
	ASFLAGS := $(JVM_ASFLAGS), \
	LD_SET_ORIGIN := false, \
	DEFAULT_LDFLAGS := false, \
	LDFLAGS := $(JVM_LDFLAGS), \
	LIBS := $(JVM_LIBS), \
	OPTIMIZATION := $(JVM_OPTIMIZATION), \
	OBJECT_DIR := $(JVM_OUTPUTDIR)/objs, \
	STRIPFLAGS := $(JVM_STRIPFLAGS), \
	EMBED_MANIFEST := true, \
	RC_FILEDESC := $(HOTSPOT_VM_DISTRO) $(OPENJDK_TARGET_CPU_BITS)-Bit $(JVM_VARIANT) VM, \
	PRECOMPILED_HEADER := $(JVM_PRECOMPILED_HEADER), \
	PRECOMPILED_HEADER_EXCLUDE := $(JVM_PRECOMPILED_HEADER_EXCLUDE), \
	))

	ifeq ($(call isTargetOs, windows), true)
	# The following lines create a list of vftable symbols to be filtered out of
	# the symbol file. Removing this line causes the linker to complain about too
	# many (> 64K) symbols, so the _guess_ is that this line is here to keep down
	# the number of exported symbols below that limit.
	#
	# Some usages of C++ lambdas require the vftable symbol of classes that use
	# the lambda type as a template parameter. The usage of those classes won't
	# link if their vftable symbols are removed. That's why there's an exception
	# for vftable symbols containing the string 'lambda'.
	#
	# A very simple example of a lambda usage that fails if the lambda vftable
	# symbols are missing in the symbol file:
	#
	# #include <functional>
	# std::function<void()> f = [](){}
	FILTER_SYMBOLS_AWK_SCRIPT := \
	'{ \
	if ($$7 ~ /\?\?_7.*@@6B@/ && $$7 !~ /type_info/ && $$7 !~ /lambda/) print " " $$7; \
	}'

	# A more correct solution would be to send BUILD_LIBJVM_ALL_OBJS instead of
	# cd && *.obj, but this will result in very long command lines, which could be
	# problematic.
	$(WIN_EXPORT_FILE): $(BUILD_LIBJVM_ALL_OBJS)
	$(call LogInfo, Generating list of symbols to export from object files)
	$(call MakeDir, $(@D))
	$(ECHO) "EXPORTS" > $@.tmp
	$(CD) $(BUILD_LIBJVM_OBJECT_DIR) && \
	$(DUMPBIN) -symbols *$(OBJ_SUFFIX) \| $(AWK) $(FILTER_SYMBOLS_AWK_SCRIPT) \| $(SORT) -u >> $@.tmp
	$(RM) $@
	$(MV) $@.tmp $@

	$(BUILD_LIBJVM_TARGET): $(WIN_EXPORT_FILE)
	endif

	# Always recompile abstract_vm_version.cpp if libjvm needs to be relinked. This ensures
	# that the internal vm version is updated as it relies on __DATE__ and __TIME__
	# macros.
	ABSTRACT_VM_VERSION_OBJ := $(JVM_OUTPUTDIR)/objs/abstract_vm_version$(OBJ_SUFFIX)
	$(ABSTRACT_VM_VERSION_OBJ): $(filter-out $(ABSTRACT_VM_VERSION_OBJ), \
	$(BUILD_LIBJVM_TARGET_DEPS))

	ifneq ($(GENERATE_COMPILE_COMMANDS_ONLY), true)
	ifeq ($(call isTargetOs, windows), true)
	# It doesn't matter which jvm.lib file gets exported, but we need
	# to pick just one.
	ifeq ($(JVM_VARIANT), $(JVM_VARIANT_MAIN))
	$(eval $(call SetupCopyFiles, COPY_JVM_LIB, \
	DEST := $(LIB_OUTPUTDIR), \
	FILES := $(BUILD_LIBJVM_IMPORT_LIBRARY), \
	))
	TARGETS += $(COPY_JVM_LIB)
	endif
	endif
	endif

	# AIX warning explanation:
	# 1500-010 : (W) WARNING in ...: Infinite loop. Program may not stop.
	# There are several infinite loops in the vm, so better suppress.
	# 1540-0198 : (W) The omitted keyword "private" is assumed for base class "...".
	# 1540-0216 : (W) An expression of type .. cannot be converted to type ..
	# In hotspot this fires for functionpointer to pointer conversions
	# 1540-1088 : (W) The exception specification is being ignored.
	# In hotspot this is caused by throw() in declaration of new() in nmethod.hpp.
	# 1540-1090 : (I) The destructor of "..." might not be called.
	# 1540-1639 : (I) The behavior of long type bit fields has changed ...

	TARGETS += $(BUILD_LIBJVM)

	################################################################################
	# Hotspot disallows the use of global operators 'new' and 'delete'. This build
	# time check helps enforce this requirement. If you trigger this check and the
	# reference is not obvious from the source, GNU objdump can be used to help find
	# the reference if compiled with GCC:
	#
	# objdump -lrdSC <path/to/file.o>
	#
	# -C demangle
	# -d disassemble
	# -r print relocation entries, interspersed with the disassembly
	# -S print source code, intermixed with disassembly
	# -l include filenames and line numbers
	#
	# Search the output for the operator(s) of interest, to see where they are
	# referenced.
	#
	# When a reference to the global 'operator delete' is reported, it might be
	# due to a "deleting destructor". In this case, objdump may show the
	# reference to be associated with but not actually in a destructor. A
	# deleting destructor is automatically generated for a class whose destructor
	# is virtual. A deleting destructor requires an accessible 'operator delete'
	# for the associated class. If the class doesn't provide a more specific
	# declaration (either directly or by inheriting from a class that provides
	# one) then the global definition will be used, triggering this check.

	ifneq ($(GENERATE_COMPILE_COMMANDS_ONLY), true)
	ifneq ($(filter $(TOOLCHAIN_TYPE), gcc clang), )

	DEMANGLED_REGEXP := [^:]operator (new\|delete)

	# Running c++filt to find offending symbols in all files is too expensive,
	# so use mangled names when looking for symbols.
	# Save the demangling for when something is actually found.
	MANGLED_SYMS := \
	_ZdaPv \
	_ZdlPv \
	_Znam \
	_Znwm \
	#
	UNDEF_PATTERN := ' U '

	define SetupOperatorNewDeleteCheck
	$1.op_check: $1
	$$(call ExecuteWithLog, $1.op_check, \
	$$(NM) $$(NMFLAGS) $$< 2>&1 \| $$(GREP) $$(addprefix -e , $$(MANGLED_SYMS)) \| $$(GREP) $$(UNDEF_PATTERN) > $1.op_check \|\| true)
	if [ -s $1.op_check ]; then \
	$$(ECHO) "$$(notdir $$<): Error: Use of global operators new and delete is not allowed in Hotspot:"; \
	$$(NM) $$(NMFLAGS) $$< \| $$(CXXFILT) \| $$(EGREP) '$$(DEMANGLED_REGEXP)' \| $$(GREP) $$(UNDEF_PATTERN); \
	$$(ECHO) "See: $$(TOPDIR)/make/hotspot/lib/CompileJvm.gmk"; \
	exit 1; \
	fi

	TARGETS += $1.op_check
	endef

	$(foreach o, $(BUILD_LIBJVM_ALL_OBJS), $(eval $(call SetupOperatorNewDeleteCheck,$o)))
	endif
	endif

	################################################################################

	endif # include guard
	include MakeIncludeEnd.gmk