--- /dev/null
+Improper condition was introduced in 1.2.5 causing some applications
+(e.g. cgit) to fail due to conflicting declarations.
+
+References:
+- http://mail.madler.net/pipermail/zlib-devel_madler.net/2010-May/002249.html
+- http://bugs.debian.org/439980
+- http://bugs.gentoo.org/show_bug.cgi?id=316377
+- http://bugs.gentoo.org/show_bug.cgi?id=316855
+- http://bugs.archlinux.org/task/19280
+- https://bugs.launchpad.net/ubuntu/+source/libpciaccess/+bug/402178
+
+--- zlib-1.2.5/zlib.h~ 2010-04-20 06:12:48.000000000 +0200
++++ zlib-1.2.5/zlib.h 2010-05-23 22:11:29.241572099 +0200
+@@ -1578,7 +1578,7 @@
+ # define gzoffset gzoffset64
+ # define adler32_combine adler32_combine64
+ # define crc32_combine crc32_combine64
+-# ifdef _LARGEFILE64_SOURCE
++# ifndef _LARGEFILE64_SOURCE
+ ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
+ ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));
+ ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));