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Re: Avoid use of libgcc_s and libgcc_eh when building glibc
- From: Khem Raj <raj dot khem at gmail dot com>
- To: Mike Frysinger <vapier at gentoo dot org>
- Cc: libc-alpha at sourceware dot org, "Joseph S. Myers" <joseph at codesourcery dot com>
- Date: Tue, 14 Aug 2012 22:29:26 -0700
- Subject: Re: Avoid use of libgcc_s and libgcc_eh when building glibc
- References: <Pine.LNX.4.64.1205282140020.2726@digraph.polyomino.org.uk> <201208120143.38398.vapier@gentoo.org>
On Sat, Aug 11, 2012 at 10:43 PM, Mike Frysinger <vapier@gentoo.org> wrote:
> On Monday 28 May 2012 17:43:04 Joseph S. Myers wrote:
>> I've tested this patch for x86_64 and also done a test build for ARM.
>> To go in it will certainly need more architecture testing (libc
>> architectures and IA64) - but since it seems likely that review will
>> point out changes that should be made, perhaps we could sort out any
>> such changes first so the architecture maintainers are testing a patch
>> that could, subject to such testing, go in?
>
> i tested glibc-2.16 with the patch merged into latest git (and tweaking it a
> little to apply). after disabling the long standing -lgcc_eh hack in our
> build system, i was able to bootstrap an ia64 cross-compiler fine: binutils,
> kernel/glibc headers, gcc stage1 (static C-only), full glibc, gcc stage2 (full
> C/C++/etc...).
> -mike
I am getting this error below. I see that libunwind.o is included in
libgcc.a when building gcc-static
arm-oe-linux-gnueabi-gcc -march=armv5te -marm -mthumb-interwork
-mtune=arm926ej-s
--sysroot=/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/sysroots/qemuarm
-nostdlib -nostartfiles -static -o
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/elf/sln
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/csu/crt1.o
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/csu/crti.o
`arm-oe-linux-gnueabi-gcc -march=armv5te -marm -mthumb-interwork
-mtune=arm926ej-s
--sysroot=/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/sysroots/qemuarm
--print-file-name=crtbegin.o`
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/elf/sln.o
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/elf/static-stubs.o
-Wl,--start-group
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/libc.a
-lgcc /home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/elf/libgcc-stubs.a
-Wl,--end-group -Wl,--start-group
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/libc.a
-lgcc /home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/elf/libgcc-stubs.a
-Wl,--end-group `arm-oe-linux-gnueabi-gcc -march=armv5te -marm
-mthumb-interwork -mtune=arm926ej-s
--sysroot=/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/sysroots/qemuarm
--print-file-name=crtend.o`
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/csu/crtn.o
-Wl,-Map,/tmp/xx -Wl,--cref
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/sysroots/x86_64-linux/usr/lib/armv5te-oe-linux-gnueabi.gcc-cross-initial/gcc/arm-oe-linux-gnueabi/4.7.2/libgcc.a(libunwind.o):
In function `_Unwind_Resume':
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work-shared/gcc-4.7.1.0+svn190218-r10/gcc-4_7-branch/libgcc/config/arm/libunwind.S:347:
multiple definition of `_Unwind_Resume'
/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/build-arm-oe-linux-gnueabi/elf/static-stubs.o:/home/kraj/work/angstrom/sources/openembedded-core/build/tmp-eglibc/work/armv5te-oe-linux-gnueabi/eglibc-2.16-r6+svnr19922/eglibc-2_16/libc/elf/static-stubs.c:32:
first defined here
collect2: error: ld returned 1 exit status