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-rw-r--r--src/3rdparty/libpng/pnglibconf.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/src/3rdparty/libpng/pnglibconf.h b/src/3rdparty/libpng/pnglibconf.h
index f0fdcf8068..8b6da9eb2c 100644
--- a/src/3rdparty/libpng/pnglibconf.h
+++ b/src/3rdparty/libpng/pnglibconf.h
@@ -1,8 +1,6 @@
-/* libpng 1.6.17 STANDARD API DEFINITION */
-
/* pnglibconf.h - library build configuration */
-/* Libpng version 1.6.17 - March 26, 2015 */
+/* libpng version 1.6.19, July 23, 2015 */
/* Copyright (c) 1998-2014 Glenn Randers-Pehrson */
@@ -196,6 +194,10 @@
#define PNG_GAMMA_THRESHOLD_FIXED 5000
#define PNG_IDAT_READ_SIZE PNG_ZBUF_SIZE
#define PNG_INFLATE_BUF_SIZE 1024
+#define PNG_LINKAGE_API extern
+#define PNG_LINKAGE_CALLBACK extern
+#define PNG_LINKAGE_DATA extern
+#define PNG_LINKAGE_FUNCTION extern
#define PNG_MAX_GAMMA_8 11
#define PNG_QUANTIZE_BLUE_BITS 5
#define PNG_QUANTIZE_GREEN_BITS 5