Introduce separate baselines for Solaris 10 and 11+ (PR libstdc++/66006)

	PR libstdc++/66006
	* configure.host (abi_baseline_pair): Use separate baseline for
	Solaris 11+ and Solaris 10 with gld.
	* config/abi/post/solaris2.11/amd64/baseline_symbols.txt: New file.
	* config/abi/post/solaris2.11/baseline_symbols.txt: New file.
	* config/abi/post/solaris2.11/sparcv9/baseline_symbols.txt: New file.

From-SVN: r232317

libstdc++-v3/ChangeLog

+2016-01-13  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	PR libstdc++/66006
+	* configure.host (abi_baseline_pair): Use separate baseline for
+	Solaris 11+ and Solaris 10 with gld.
+	* config/abi/post/solaris2.11/amd64/baseline_symbols.txt: New file.
+	* config/abi/post/solaris2.11/baseline_symbols.txt: New file.
+	* config/abi/post/solaris2.11/sparcv9/baseline_symbols.txt: New file.
+
 2016-01-12  Daniel Kruegler  <daniel.kruegler@gmail.com>
 
 	PR libstdc++/68877

libstdc++-v3/configure.host

@@ -367,7 +367,18 @@ case "${host}" in
     port_specific_symbol_files="\$(srcdir)/../config/os/bsd/darwin/ppc-extra.ver"
     ;;
   *-*-solaris2.1[0-9])
-    abi_baseline_pair=solaris2.10
+    # On Solaris 10 with Solaris ld, there's no COMDAT support.  GNU ld always
+    # provides it, as does Solaris ld since Solaris 11, leading to different
+    # baselines.
+    case "${host_os}:${with_gnu_ld}" in
+      # with_gnu_ld may either be unset (default) or no (with --without-gnu-ld).
+      solaris2.10: | solaris2.10:no)
+        abi_baseline_pair=solaris2.10
+	;;
+      *)
+        abi_baseline_pair=solaris2.11
+	;;
+    esac
     abi_baseline_subdir_switch=--print-multi-os-directory
     ;;
 esac