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-rw-r--r--runtime/libpng/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/runtime/libpng/Makefile b/runtime/libpng/Makefile
index 5bd65751ed..9d9b8ddf33 100644
--- a/runtime/libpng/Makefile
+++ b/runtime/libpng/Makefile
@@ -11,6 +11,7 @@ BYTECODE_LIBRARY=1
BUILD_ARCHIVE=1
DONT_BUILD_RELINKED=1
LIBRARYNAME=png
+CPPFLAGS += -I../zlib
Source = png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \