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-rw-r--r--Build/source/libs/libpng/Makefile.am2
1 files changed, 2 insertions, 0 deletions
diff --git a/Build/source/libs/libpng/Makefile.am b/Build/source/libs/libpng/Makefile.am
index 1ebb50d7a67..2bf22bb0165 100644
--- a/Build/source/libs/libpng/Makefile.am
+++ b/Build/source/libs/libpng/Makefile.am
@@ -33,6 +33,8 @@ dist-hook:
$(distdir)/$(LIBPNG_TREE)/missing \
$(distdir)/$(LIBPNG_TREE)/mkinstalldirs
+SUBDIRS = include
+
INCLUDES = -I$(top_srcdir)/$(LIBPNG_TREE) $(ZLIB_INCLUDES)
AM_CPPFLAGS = $(LIBPNG_DEFINES)
AM_CFLAGS = $(WARNING_CFLAGS)