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path: root/libpng.patch
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--- snapshot_old.c	2000-10-26 23:00:27.000000000 +0200
+++ snapshot.c	2012-07-29 20:40:19.000000000 +0200
@@ -30,6 +30,11 @@
 static int write_png( int message, const void *data );
 #endif
 
+/* starting with libpng15, png.h no longer #includes zlib.h */
+#ifndef Z_BEST_COMPRESSION
+#define Z_BEST_COMPRESSION 9
+#endif
+
 #ifdef HAVE_LIBTIFF
 #include <tiffio.h>
 static int write_tiff( int message, const void *data );
@@ -250,7 +255,7 @@
 			return -1;
 		png_write_s = png_create_write_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL );
 		png_info_s = png_create_info_struct( png_write_s );
-		if (setjmp( png_write_s->jmpbuf )) {
+		if (setjmp(png_jmpbuf(png_write_s))) {
 			/* Error writing file */
 			png_destroy_write_struct( &png_write_s, &png_info_s );
 			fclose( png_fp );