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| author |  David Symonds <dsymonds@gmail.com> | 2007-11-07 14:24:28 +1100 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2007-11-07 17:06:14 -0800 |
| commit | 609a2289d76fd9a7dddceabc63d1654fe61e0ffb (patch) | |
| tree | 1d1d2719a4936c8958259a1772a31b7f6baac6c8 | |
| parent | Add Documentation/CodingGuidelines (diff) | |
| download | tgif-609a2289d76fd9a7dddceabc63d1654fe61e0ffb.tar.xz | |
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>
| -rw-r--r-- | Makefile | 6 | ||||
| -rw-r--r-- | cache.h | 2 | ||||
| -rw-r--r-- | config.mak.in | 1 | ||||
| -rw-r--r-- | configure.ac | 20 |
4 files changed, 28 insertions, 1 deletions
@@ -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 @@ -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 diff --git a/config.mak.in b/config.mak.in index a3032e389f..776b805659 100644 --- a/config.mak.in +++ b/config.mak.in @@ -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@ diff --git a/configure.ac b/configure.ac index ed7cc895d2..ab516db379 100644 --- a/configure.ac +++ b/configure.ac @@ -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], |