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Improve accuracy of check for presence of deflateBound. 

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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6
Makefile
View File

@ -94,6 +94,8 @@ all::
# Define OLD_ICONV if your library has an old iconv(), where the second
# (input buffer pointer) parameter is declared with type (const char **).
#
# Define NO_DEFLATE_BOUND if your zlib does not have deflateBound.
#
# Define NO_R_TO_GCC_LINKER if your gcc does not like "-R/path/lib"
# that tells runtime paths to dynamic libraries;
# "-Wl,-rpath=/path/lib" is used instead.
@ -637,6 +639,10 @@ ifdef OLD_ICONV
BASIC_CFLAGS += -DOLD_ICONV
endif
ifdef NO_DEFLATE_BOUND
BASIC_CFLAGS += -DNO_DEFLATE_BOUND
endif
ifdef PPC_SHA1
SHA1_HEADER = "ppc/sha1.h"
LIB_OBJS += ppc/sha1.o ppc/sha1ppc.o

2
cache.h
View File

@ -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

1
config.mak.in
View File

@ -38,3 +38,4 @@ NO_STRCASESTR=@NO_STRCASESTR@
NO_STRLCPY=@NO_STRLCPY@
NO_SETENV=@NO_SETENV@
NO_ICONV=@NO_ICONV@
NO_DEFLATE_BOUND=@NO_DEFLATE_BOUND@

20
configure.ac
View File

@ -182,6 +182,26 @@ AC_SUBST(NEEDS_LIBICONV)
AC_SUBST(NO_ICONV)
test -n "$NEEDS_LIBICONV" && LIBS="$LIBS -liconv"
#
# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
AC_DEFUN([ZLIBTEST_SRC], [
#include <zlib.h>
int main(void)
{
deflateBound(0, 0);
return 0;
}
])
AC_MSG_CHECKING([for deflateBound in -lz])
old_LIBS="$LIBS"
LIBS="$LIBS -lz"
AC_LINK_IFELSE(ZLIBTEST_SRC,
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
NO_DEFLATE_BOUND=yes])
LIBS="$old_LIBS"
AC_SUBST(NO_DEFLATE_BOUND)
#
# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
# Patrick Mauritz).
AC_CHECK_LIB([c], [socket],