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-rw-r--r--libavformat/avformat.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index c78b98aa70..a58e73c4fa 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -253,7 +253,9 @@ extern AVImageFormat pgm_image_format;
extern AVImageFormat ppm_image_format;
extern AVImageFormat pgmyuv_image_format;
extern AVImageFormat yuv_image_format;
+#ifdef CONFIG_ZLIB
extern AVImageFormat png_image_format;
+#endif
extern AVImageFormat jpeg_image_format;
extern AVImageFormat gif_image_format;