--- a/configure.ac | |
+++ b/configure.ac | |
@@ -912,7 +912,7 @@ | |
dnl zlib is needed for language level 3, and libpng | |
# we must define ZLIBDIR regardless because png.mak does a -I$(ZLIBDIR) | |
# this seems a harmless default | |
-ZLIBDIR=src | |
+ZLIBDIR=$includedir | |
AUX_SHARED_ZLIB= | |
if test -d $srcdir/zlib; then |