From 5bdb7691051b464a6ff801d145f542240f13b15d Mon Sep 17 00:00:00 2001
From: Cezary Statkiewicz <cezio@thelirium.net>
Date: Tue, 30 Sep 2014 20:12:18 +0200
Subject: [PATCH] #21 conditionally use QuantizeBuffer, not available in giflib
 4.2

---
 gif.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/gif.c b/gif.c
index 2130ce2..28e8e55 100644
--- a/gif.c
+++ b/gif.c
@@ -17,12 +17,18 @@
 
 #define INLINE static inline
 
+
+// QuantizeBuffer has been removed from giflib 4.2
+// in http://sourceforge.net/p/giflib/code/ci/ce02f85e6ed1e1455a4aea9ffa68a3e2b8f8a4b1/
+#if !defined(GIFLIB_MAJOR) || (GIFLIB_MAJOR == 4 && GIFLIB_MINOR < 2) 
+    #define GifQuantizeBuffer QuantizeBuffer
+#endif 
+
 #if !defined(GIFLIB_MAJOR) || GIFLIB_MAJOR < 5
     #define EGifOpen(x, y, z) EGifOpen(x, y)
     #define EGifCloseFile(x, y) EGifCloseFile(x)
     #define GifMakeMapObject MakeMapObject
     #define GifFreeMapObject FreeMapObject
-    #define GifQuantizeBuffer QuantizeBuffer
     #define GIF_BEGIN_APP_EXTENSION(f) EGifPutExtensionFirst(f, APPLICATION_EXT_FUNC_CODE, strlen(GIF_APP), GIF_APP)
     #define GIF_END_APP_EXTENSION(f, m) EGifPutExtensionLast(f, APPLICATION_EXT_FUNC_CODE, sizeof(m), m)
 #else
@@ -318,6 +324,8 @@ gif_encode(Image *image, int single, int *size)
     ColorMapObject *palette = GifMakeMapObject(NCOLORS, NULL);
     int palette_size = NCOLORS;
 
+
+#if !defined(GIFLIB_MAJOR) || (GIFLIB_MAJOR == 4 && GIFLIB_MINOR < 2) 
     // Quantize again using giflib, since it yields a palette which produces
     // better compression, reducing the file size by 20%. Note that this second
     // quantization is very fast, because the image already has 256 colors, so
@@ -327,7 +335,7 @@ gif_encode(Image *image, int single, int *size)
         gif_frames_free(frames, count);
         return NULL;
     }
-
+# endif 
     frames[0].data = malloc(total);
     memcpy(frames[0].data, output, total);
     frames[0].width = width;