* configure.in: check if -fstack-protector is really available.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34700 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Mon Feb 20 15:50:33 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* configure.in: check if -fstack-protector is really available.
+
 Sun Feb 19 23:43:38 2012  Tanaka Akira  <akr@fsij.org>
 
 	* ext/dbm/extconf.rb: show header and library found.

configure.in

@@ -505,6 +505,9 @@ if test "$GCC" = yes; then
     ],
     [
 	RUBY_TRY_CFLAGS(-fstack-protector, [stack_protector=yes], [stack_protector=no])
+	if test "x$stack_protector" = xyes; then
+	    RUBY_TRY_LDFLAGS(-fstack-protector, [], [stack_protector=broken])
+	fi
     ])
     if test "x$stack_protector" = xyes; then
 	RUBY_APPEND_OPTION(XCFLAGS, -fstack-protector)