From patchwork Tue Dec  7 14:26:11 2010
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: svr4.h avoidance: arc
Date: Tue, 07 Dec 2010 04:26:11 -0000
From: "Joseph S. Myers" <joseph@codesourcery.com>
X-Patchwork-Id: 74547
Message-Id: <Pine.LNX.4.64.1012071425210.11834@digraph.polyomino.org.uk>
To: gcc-patches@gcc.gnu.org

This patch starts the series of patches removing svr4.h from the
headers used by particular targets in GCC.  All of these patches are
relative to a tree with the first three patches for particular macros
<http://gcc.gnu.org/ml/gcc-patches/2010-12/msg00362.html>
<http://gcc.gnu.org/ml/gcc-patches/2010-12/msg00460.html>
<http://gcc.gnu.org/ml/gcc-patches/2010-12/msg00518.html> applied.

This patch stops arc-*-elf* from using svr4.h.  The only macro used
from that header was LIB_SPEC.  The svr4.h definition

#undef	LIB_SPEC
#define LIB_SPEC "%{!shared:%{!symbolic:-lc}}"

seems inappropriate for generic ELF targets (in general you do want to
link with -lc even when building a shared library) so I used the
simpler "-lc" for LIB_SPEC and will do so as applicable for other
targets currently inheriting this macro setting from svr4.h.

Tested building cc1 and xgcc for a cross to arc-elf.  OK to commit?
(NB there is no listed maintainer for this target at present.)

2010-12-07  Joseph Myers  <joseph@codesourcery.com>

	* config/arc/arc.h (LIB_SPEC): Define.
	* config.gcc (arc-*-elf*): Don't use svr4.h.


diff -rupN --exclude=.svn gcc-mainline-3/gcc/config/arc/arc.h gcc-mainline/gcc/config/arc/arc.h
--- gcc-mainline-3/gcc/config/arc/arc.h	2010-12-02 09:39:19.000000000 -0800
+++ gcc-mainline/gcc/config/arc/arc.h	2010-12-07 06:20:01.000000000 -0800
@@ -29,6 +29,7 @@ along with GCC; see the file COPYING3.  
 
 #undef ASM_SPEC
 #undef LINK_SPEC
+#undef LIB_SPEC
 #undef STARTFILE_SPEC
 #undef ENDFILE_SPEC
 #undef SIZE_TYPE
@@ -66,6 +67,8 @@ along with GCC; see the file COPYING3.  
 
 #define LINK_SPEC "%{v} %{EB} %{EL}"
 
+#define LIB_SPEC "-lc"
+
 #define STARTFILE_SPEC "%{!shared:crt0.o%s} crtinit.o%s"
 
 #define ENDFILE_SPEC "crtfini.o%s"
diff -rupN --exclude=.svn gcc-mainline-3/gcc/config.gcc gcc-mainline/gcc/config.gcc
--- gcc-mainline-3/gcc/config.gcc	2010-12-06 03:31:49.000000000 -0800
+++ gcc-mainline/gcc/config.gcc	2010-12-07 06:09:45.000000000 -0800
@@ -761,7 +761,7 @@ alpha*-dec-*vms*)
 	extra_options="${extra_options} vms/vms.opt"
 	;;
 arc-*-elf*)
-	tm_file="dbxelf.h elfos.h svr4.h newlib-stdint.h ${tm_file}"
+	tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file}"
 	extra_parts="crtinit.o crtfini.o"
 	;;
 arm-wrs-vxworks)