This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [PATCH] Use the LTO linker plugin by default
- From: Rainer Orth <ro at CeBiTec dot Uni-Bielefeld dot DE>
- To: Richard Biener <rguenther at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org, Jan Hubicka <hubicka at ucw dot cz>, Jakub Jelinek <jakub at redhat dot com>, Paolo Bonzini <bonzini at gnu dot org>
- Date: Mon, 10 Mar 2014 17:32:44 +0100
- Subject: Re: [PATCH] Use the LTO linker plugin by default
- Authentication-results: sourceware.org; auth=none
- References: <alpine dot LSU dot 2 dot 11 dot 1403041241510 dot 11121 at zhemvz dot fhfr dot qr> <ydd8usl9bqu dot fsf at CeBiTec dot Uni-Bielefeld dot DE> <alpine dot LSU dot 2 dot 11 dot 1403101541080 dot 6041 at zhemvz dot fhfr dot qr> <yddvbvmrsms dot fsf at lokon dot CeBiTec dot Uni-Bielefeld dot DE>
Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> writes:
> It does use the host compiler for me, too.
>
>> but maybe _that_ is the issue for you? (see also how it uses
>> -static-libgcc, for me it doesn't even depend on libgcc_s)
>
> But as you can see above, libtool, being its usual helpful self, simply
> drops -static-libgcc ;-( If I use -Wc,-static-libgcc, all seems fine.
The following patch implements this. The override is necessary to avoid
LDFLAGS passed in from the toplevel to replace the Makefile value.
Bootstraps on i386-pc-solaris2.10 and x86_64-unknown-linux-gnu are now
well beyond stage1. Ok for mainline if they pass?
Thanks
Rainer
2014-03-10 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* Makefile.am (comma): New variable
(LDFLAGS): Prefix -static-libgcc with -Wc.
# HG changeset patch
# Parent baa4e95100d168dd4133db86c265fd35739647aa
Fix Solaris bootstrap with GNU ld/LTO
diff --git a/lto-plugin/Makefile.am b/lto-plugin/Makefile.am
--- a/lto-plugin/Makefile.am
+++ b/lto-plugin/Makefile.am
@@ -15,6 +15,10 @@ libexecsub_LTLIBRARIES = liblto_plugin.l
gcc_build_dir = ../$(host_subdir)/gcc
in_gcc_libs = $(foreach lib, $(libexecsub_LTLIBRARIES), $(gcc_build_dir)/$(lib))
+# Need to protect -static-libgcc from libtool
+comma = ,
+override LDFLAGS = $(patsubst -static-libgcc,-Wc$(comma)-static-libgcc,@LDFLAGS@)
+
# Can be removed when libiberty becomes a normal convenience library
Wc=-Wc,
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University