-http://bugs.gentoo.org/316377
-
-try to unbreak over-eager LFS logic in zlib header
-
---- zlib-1.2.5/zlib.h
-+++ zlib-1.2.5/zlib.h
-@@ -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));