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-rw-r--r--libpng/libpng.pro.in1
1 files changed, 1 insertions, 0 deletions
diff --git a/libpng/libpng.pro.in b/libpng/libpng.pro.in
index 5b731e3..34bfd32 100644
--- a/libpng/libpng.pro.in
+++ b/libpng/libpng.pro.in
@@ -46,6 +46,7 @@ SOURCES = adler32.c \
uncompr.c \
zutil.c
win32:INCLUDEPATH += .
+win32-g++:TMAKE_CFLAGS += -D__CYGWIN__ -DALL_STATIC
DESTDIR = ../lib
TARGET = png
OBJECTS_DIR = ../objects