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Allow the use of -Wundef when compiling or using zlib.

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This commit is contained in:
Mark Adler
2012-03-13 23:19:38 -07:00
parent 9c08a82246
commit 8dc21b17a6
4 changed files with 45 additions and 21 deletions
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20
zconf.h
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@@ -399,24 +399,32 @@ typedef uLong FAR uLongf;
# endif
#endif
/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
/* accommodate both "#define _LARGEFILE64_SOURCE" and
* "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
* though the former does not conform to the LFS document), but considering
* though the former does not conform to the LFS document), but consider
* both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
* equivalently requesting no 64-bit operations
*/
#if -_LARGEFILE64_SOURCE - -1 == 1
#if defined(LARGEFILE64_SOURCE) && _LARGEFILE64_SOURCE == 0
# undef _LARGEFILE64_SOURCE
#endif
#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
# define Z_LARGE
#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE == 1
# define Z_LFS64
#endif
#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
# define Z_LARGE64
#endif
#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64 && defined(Z_LFS64)
# define Z_WANT64
#endif
#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
# define Z_HAVE_UNISTD_H
#endif
#if (defined(Z_HAVE_UNISTD_H) || defined(Z_LARGE)) && !defined(Z_SOLO)
#if (defined(Z_HAVE_UNISTD_H) || defined(Z_LARGE64)) && !defined(Z_SOLO)
# include <unistd.h> /* for SEEK_* and off_t */
# ifdef VMS
# include <unixio.h> /* for off_t */