config.gcc: Use darwin9.h, darwin10.h and darwin12.h on darwin12 and later.

2015-05-05  Jack Howarth  <howarth.at.gcc@gmail.com>

	* config.gcc: Use darwin9.h, darwin10.h and darwin12.h
	on darwin12 and later.
	* config/darwin12.h (LINK_GCC_C_SEQUENCE_SPEC): Add
	file to pass -rdynamic on darwin12 and later.
	* config/darwin.opt (rdynamic): Add.

From-SVN: r222822

gcc/ChangeLog

+2015-05-05  Jack Howarth  <howarth.at.gcc@gmail.com>
+
+	* config.gcc: Use darwin9.h, darwin10.h and darwin12.h
+	on darwin12 and later.
+	* config/darwin12.h (LINK_GCC_C_SEQUENCE_SPEC): Add
+	file to pass -rdynamic on darwin12 and later.
+	* config/darwin.opt (rdynamic): Add.
+
 2015-05-05  Uros Bizjak  <ubizjak@gmail.com>
 
 	* doc/extend.texi (C Extensions): Update menu for moved Variable

gcc/config.gcc

@@ -605,9 +605,12 @@ case ${target} in
   *-*-darwin9*)
     tm_file="${tm_file} darwin9.h"
     ;;
-  *-*-darwin[12][0-9]*)
+  *-*-darwin[1][01]*)
     tm_file="${tm_file} darwin9.h darwin10.h"
     ;;
+  *-*-darwin[1][2-9]* | *-*-darwin[2][0-9]*)
+    tm_file="${tm_file} darwin9.h darwin10.h darwin12.h"
+    ;;
   esac
   tm_file="${tm_file} ${cpu_type}/darwin.h"
   tm_p_file="${tm_p_file} darwin-protos.h"

gcc/config/darwin.opt

@@ -155,6 +155,9 @@ Driver
 pthread
 Driver
 
+rdynamic
+Driver
+
 seg_addr_table
 Driver Separate Alias(Zseg_addr_table)
 

gcc/config/darwin12.h

+/* Target definitions for Darwin (Mac OS X) systems.
+   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Contributed by Jack Howarth <howarth.at.gcc@gmail.com>.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#undef  LINK_GCC_C_SEQUENCE_SPEC
+#define LINK_GCC_C_SEQUENCE_SPEC \
+"%:version-compare(>= 10.6 mmacosx-version-min= -no_compact_unwind) \
+   %{rdynamic:-export_dynamic} %{!static:%{!static-libgcc: \
+      %:version-compare(>= 10.6 mmacosx-version-min= -lSystem) } } \
+   %{fno-pic|fno-PIC|fno-pie|fno-PIE|fapple-kext|mkernel|static|mdynamic-no-pic: \
+      %:version-compare(>= 10.7 mmacosx-version-min= -no_pie) } %G %L"