Configure USE_HIDDEN_LINKONCE on Solaris/x86

	gcc/testsuite:
	* gcc.target/i386/mcount_pic.c: Only xfail get_pc_thunk scan on
	Solaris 10.
	* gcc.target/i386/pr63620.c: Likewise.

	gcc:
	* config/i386/sol2.h (USE_HIDDEN_LINKONCE): Remove.
	* configure.ac (hidden_linkonce): New test.
	* configure: Regenerate.
	* config.in: Regenerate.

From-SVN: r257076

1 files changed, 29 insertions, 0 deletions

diff --git a/gcc/configure b/gcc/configure
index 376d341..f3695ad 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -23798,6 +23798,35 @@ cat >>confdefs.h <<_ACEOF
 _ACEOF
 
 
+# Restrict this test to Solaris/x86: other targets define this statically.
+case "${target}" in
+  i?86-*-solaris2* | x86_64-*-solaris2*)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking support for hidden thunks in linkonce sections" >&5
+$as_echo_n "checking support for hidden thunks in linkonce sections... " >&6; }
+    if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
+      hidden_linkonce=yes
+    else
+      case "${target}" in
+	# Full support for hidden thunks in linkonce sections only appeared in
+	# Solaris 11/OpenSolaris.
+        *-*-solaris2.1[1-9]*)
+	  hidden_linkonce=yes
+	  ;;
+	*)
+	  hidden_linkonce=no
+	  ;;
+      esac
+    fi
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $hidden_linkonce" >&5
+$as_echo "$hidden_linkonce" >&6; }
+
+cat >>confdefs.h <<_ACEOF
+#define USE_HIDDEN_LINKONCE `if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`
+_ACEOF
+
+  ;;
+esac
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for line table discriminator support" >&5
 $as_echo_n "checking assembler for line table discriminator support... " >&6; }
 if test "${gcc_cv_as_discriminator+set}" = set; then :