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Improve accuracy of check for presence of deflateBound.

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ZLIB_VERNUM isn't defined in some zlib versions, so this patch does a proper
linking test in autoconf to see whether deflateBound exists in zlib. Also,
setting NO_DEFLATE_BOUND will also work for folk not using autoconf.

Signed-off-by: David Symonds <dsymonds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
David Symonds
2007-11-07 14:24:28 +11:00
committed by Junio C Hamano
parent 6d0618a820
commit 609a2289d7
4 changed files with 28 additions and 1 deletions
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2
cache.h
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@ -6,7 +6,7 @@
#include SHA1_HEADER
#include <zlib.h>
#if ZLIB_VERNUM < 0x1200
#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
#endif