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| author | Darren Tucker <dtucker@zip.com.au> | 2005-06-03 17:58:31 +1000 |
|---|---|---|
| committer | Darren Tucker <dtucker@zip.com.au> | 2005-06-03 17:58:31 +1000 |
| commit | 67b3703da3c4a1f766b25dbe31aa2fed4a2ad656 (patch) | |
| tree | 21afb72337c07cd02a416f10cacb6a8fc1998ba0 /configure.ac | |
| parent | fcc7ff1de8db0647357a5846e4d629f4ca54a6b9 (diff) | |
- (dtucker) [configure.ac] Only try gcc -std=gnu99 if LLONG_MAX isn't
defined, and check that it helps before keeping it in CFLAGS. Some old
gcc's don't set an error code when encountering an unknown value in -std.
Found and tested by tim@.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/configure.ac b/configure.ac index bca35a63..cd795caf 100644 --- a/configure.ac +++ b/configure.ac @@ -1,4 +1,4 @@ -# $Id: configure.ac,v 1.272 2005/06/03 03:28:29 tim Exp $ +# $Id: configure.ac,v 1.273 2005/06/03 07:58:31 dtucker Exp $ # # Copyright (c) 1999-2004 Damien Miller # @@ -77,17 +77,23 @@ fi AC_SUBST(LD) AC_C_INLINE + +AC_CHECK_DECL(LLONG_MAX, have_llong_max=1, , [#include <limits.h>]) + if test "$GCC" = "yes" || test "$GCC" = "egcs"; then CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wno-uninitialized" - # Check for -std=gnu99 support (needed for LLONG_MIN/MAX on Linux) - saved_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -std=gnu99" - AC_MSG_CHECKING(whether cc accepts -std=gnu99 option) - AC_TRY_COMPILE([], [return(0);], [AC_MSG_RESULT(yes)], - [AC_MSG_RESULT(no) - CFLAGS="$saved_CFLAGS"], - ) + if test -z "$have_llong_max"; then + # retry LLONG_MAX with -std=gnu99, needed on some Linuxes + unset ac_cv_have_decl_LLONG_MAX + saved_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -std=gnu99" + AC_CHECK_DECL(LLONG_MAX, + [have_llong_max=1], + [CFLAGS="$saved_CFLAGS"], + [#include <limits.h>] + ) + fi fi AC_ARG_WITH(rpath, |