configure.ac: Check for __stack_chk_fail for darwin.

2007-01-07  Eric Christopher  <echristo@apple.com>

        * configure.ac: Check for __stack_chk_fail for darwin.
        * configure: Regenerate.

From-SVN: r120559

gcc/ChangeLog

+2007-01-07  Eric Christopher  <echristo@apple.com>
+
+	* configure.ac: Check for __stack_chk_fail for darwin.
+	* configure: Regenerate.
+
 2007-01-07  Richard Guenther  <rguenther@suse.de>
 
 	* tree-vrp.c (extract_range_from_assert): CSE calls to
@@ -10,7 +15,7 @@
 	* config/avr/avr.c (call_insn_operand): Delete function.
 	* config/avr/avr.md (*pushqi, *pushhi, *pushsi, *pushsf): Use REG_SP
 	instead of register number. Use predicates.
-	* config/avr/predicates.md (const0_operand, reg_or_0_operand, 
+	* config/avr/predicates.md (const0_operand, reg_or_0_operand,
 	call_insn_operand): Add.
 
 2007-01-06  Jan Hubicka  <jh@suse.cz>

gcc/configure.ac

@@ -3328,11 +3328,11 @@ if test x$with_sysroot = x && test x$host = x$target \
 fi
 
 # Test for stack protector support in target C library.
-case "$target" in
-  *-*-linux*)
-    AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
+AC_CACHE_CHECK(__stack_chk_fail in target C library,
       gcc_cv_libc_provides_ssp,
       [gcc_cv_libc_provides_ssp=no
+    case "$target" in
+       *-*-linux*)
       if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
 	if test "x$with_sysroot" = x; then
 	  glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
@@ -3358,9 +3358,15 @@ case "$target" in
 	     $glibc_header_dir/features.h > /dev/null; then
 	  gcc_cv_libc_provides_ssp=yes
 	fi
-      fi]) ;;
+        fi
+	;;
+       *-*-darwin*)
+	 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
+           [echo "no __stack_chk_fail on this target"])
+        ;;
   *) gcc_cv_libc_provides_ssp=no ;;
-esac
+    esac])
+
 if test x$gcc_cv_libc_provides_ssp = xyes; then
   AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
 	    [Define if your target C library provides stack protector support])