Weaken -fstack-protector configure test to a compile test.

3 files changed, 14 insertions, 21 deletions

diff --git a/ChangeLog b/ChangeLog
index b65061f532..e8b43e4a1b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,11 @@
 2012-03-21  Thomas Schwinge  <thomas@codesourcery.com>
+	    Joseph Myers  <joseph@codesourcery.com>
+
+	* configure.in (libc_cv_ssp): Use LIBC_TRY_CC_OPTION instead of a
+	link test.
+	* configure: Regenerated.
+
+2012-03-21  Thomas Schwinge  <thomas@codesourcery.com>
 
         * conform/conformtest.pl: Handle --tmpdir argument, defaulting to /tmp.
         * conform/run-conformtest.sh: Pass --tmpdir argument when invoking
diff --git a/configure b/configure
index dc50c16c72..e131070718 100755
--- a/configure
+++ b/configure
@@ -6643,23 +6643,17 @@ $as_echo_n "checking for -fstack-protector... " >&6; }
 if ${libc_cv_ssp+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  cat > conftest.c <<EOF
-int foo;
-main () { return 0;}
-EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -Werror -fstack-protector
-			    -o conftest conftest.c 1>&5'
+  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector -xc /dev/null -S -o /dev/null'
   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; }
-then
+  test $ac_status = 0; }; }; then :
   libc_cv_ssp=yes
 else
   libc_cv_ssp=no
 fi
-rm -f conftest*
+
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp" >&5
 $as_echo "$libc_cv_ssp" >&6; }
diff --git a/configure.in b/configure.in
index bb3b057a36..b2fed4bd1c 100644
--- a/configure.in
+++ b/configure.in
@@ -1753,18 +1753,10 @@ fi
 AC_SUBST(fno_unit_at_a_time)
 
 AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl
-cat > conftest.c <<EOF
-int foo;
-main () { return 0;}
-EOF
-if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -Werror -fstack-protector
-			    -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
-then
-  libc_cv_ssp=yes
-else
-  libc_cv_ssp=no
-fi
-rm -f conftest*])
+LIBC_TRY_CC_OPTION([$CFLAGS $CPPFLAGS -Werror -fstack-protector],
+		   [libc_cv_ssp=yes],
+		   [libc_cv_ssp=no])
+])
 AC_SUBST(libc_cv_ssp)
 
 AC_CACHE_CHECK(for -fgnu89-inline, libc_cv_gnu89_inline, [dnl