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--- a/zlib.h
+++ b/zlib.h
@@ -1563,12 +1563,7 @@ ZEXTERN int ZEXPORT inflateBackInit_ OF(
* without large file support, _LFS64_LARGEFILE must also be true
*/
#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
- ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
- ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
- ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
- ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
- ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
- ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
+ #define __zlib_largefile64
#endif
#if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS-0 == 64 && _LFS64_LARGEFILE-0
@@ -1578,13 +1573,8 @@ ZEXTERN int ZEXPORT inflateBackInit_ OF(
# define gzoffset gzoffset64
# define adler32_combine adler32_combine64
# define crc32_combine crc32_combine64
-# ifdef _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));
- ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));
- ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
- ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
+# ifndef __zlib_largefile64
+# define __zlib_largefile64
# endif
#else
ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *));
@@ -1595,6 +1585,15 @@ ZEXTERN int ZEXPORT inflateBackInit_ OF(
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
#endif
+#ifdef __zlib_largefile64
+ ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
+ ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
+ ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
+ ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
+ ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
+ ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
+#endif
+
/* hack for buggy compilers */
#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)
struct internal_state {int dummy;};
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