Makefile.in (site.exp): Do not set ENABLE_LTO.

gcc/
	* Makefile.in (site.exp): Do not set ENABLE_LTO.

gcc/testsuite/
	* lib/target-supports.exp (check_effective_target_lto): Check for -flto
	option support instead of ENABLE_LTO from Makefile.

From-SVN: r219606

gcc/ChangeLog

 2015-01-14  Ilya Verbin  <ilya.verbin@intel.com>
 
+	* Makefile.in (site.exp): Do not set ENABLE_LTO.
+
+2015-01-14  Ilya Verbin  <ilya.verbin@intel.com>
+
 	* cgraphunit.c (ipa_passes): Remove argument from ipa_write_summaries.
 	* lto-cgraph.c (select_what_to_stream): Remove argument, use
 	lto_stream_offload_p instead.

gcc/Makefile.in

@@ -3606,9 +3606,6 @@ site.exp: ./config.status Makefile
 	  echo "set PLUGINCFLAGS \"$(PLUGINCFLAGS)\"" >> ./site.tmp; \
 	  echo "set GMPINC \"$(GMPINC)\"" >> ./site.tmp; \
 	fi
-	@if test "@enable_lto@" = "yes" ; then \
-	  echo "set ENABLE_LTO 1" >> ./site.tmp; \
-	fi
 # If newlib has been configured, we need to pass -B to gcc so it can find
 # newlib's crt0.o if it exists.  This will cause a "path prefix not used"
 # message if it doesn't, but the testsuite is supposed to ignore the message -

gcc/testsuite/ChangeLog

+2015-01-14  Ilya Verbin  <ilya.verbin@intel.com>
+
+	* lib/target-supports.exp (check_effective_target_lto): Check for -flto
+	option support instead of ENABLE_LTO from Makefile.
+
 2015-01-14  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/59354

gcc/testsuite/lib/target-supports.exp

@@ -5760,11 +5760,12 @@ proc check_effective_target_gld { } {
 # (LTO) support.
 
 proc check_effective_target_lto { } {
-    global ENABLE_LTO
     if { [istarget nvptx-*-*] } {
 	return 0;
     }
-    return [info exists ENABLE_LTO]
+    return [check_no_compiler_messages lto object {
+	void foo (void) { }
+    } "-flto"]
 }
 
 # Return 1 if -mx32 -maddress-mode=short can compile, 0 otherwise.