A default of -z relro (as on Fedora) defeats the deliberate mis-alignment of .got in the testcase.

POWERPC64_TOC_POINTER_ALIGNMENT

A default of -z relro (as on Fedora) defeats the deliberate
mis-alignment of .got in the testcase.

	* configure.ac (POWERPC64_TOC_POINTER_ALIGNMENT): Pass -z norelro
	to ld.
	* configure: Regenerate.

From-SVN: r230509

gcc/ChangeLog

+2015-11-18  Alan Modra  <amodra@gmail.com>
+
+	* configure.ac (POWERPC64_TOC_POINTER_ALIGNMENT): Pass -z norelro
+	to ld.
+	* configure: Regenerate.
+
 2015-11-17  Tom de Vries  <tom@codesourcery.com>
 
 	* tree-ssa-loop.c (pass_tree_loop_init::execute): Improve comments.

gcc/configure

@@ -28058,7 +28058,7 @@ _start:
 x:	.quad .TOC.
 EOF
       if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
-         && $gcc_cv_ld $emul_name -o conftest conftest.o > /dev/null 2>&1; then
+         && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
         gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[:xdigit:]]*", a); print strtonum ("0x" substr(a[0], length(a[0])-3)) }'`
       fi
       rm -f conftest conftest.o conftest.s

gcc/configure.ac

@@ -5257,7 +5257,7 @@ _start:
 x:	.quad .TOC.
 EOF
       if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
-         && $gcc_cv_ld $emul_name -o conftest conftest.o > /dev/null 2>&1; then
+         && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
         gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
       fi
       rm -f conftest conftest.o conftest.s