- (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@.
diff --git a/configure.ac b/configure.ac
index bca35a6..cd795ca 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 @@
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,