fix for ticket #121 jmpbuf on aix is a problem it seems, maybe this makes it better.

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2@1409 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/program/src/pngsize.c b/program/src/pngsize.c
index c9254d48f65f915ed315848df78939effd9f1dc6..eb12596cbbf8a9b8d7aac8a75f07a74b1c120542 100644 (file)
--- a/program/src/pngsize.c
+++ b/program/src/pngsize.c
@@ -25,12 +25,16 @@ PngSize(FILE *fd, long *width, long *height)
 /* this is to make compile on aix work since they seem to define jmpbuf
    to be _jmpbuf which breaks compilation */
 
+
+#ifndef png_jmpbuf
+#ifdef PNG_SETJMP_SUPPORTED
+#  define png_jmpbuf(png_ptr)   ((png_ptr)->PNG_jmpbuf)
+#else
 #ifdef jmpbuf
 #undef jmpbuf
 #endif
-
-#ifndef png_jmpbuf
 #  define png_jmpbuf(png_ptr)   ((png_ptr)->jmpbuf)
+#endif
 #endif
 
   if (setjmp(png_jmpbuf(png_read_ptr))){