Date: Tue, 4 Jun 2002 20:18:53 -0400
From: Ben Collins <bcollins@debian.org>
To: Shanti Katta <katta@csee.wvu.edu>
Cc: sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: Reg. sparc64 linker error
Message-ID: <20020605001853.GB1250@blimpo.internal.net>
In-Reply-To: <1023221667.12878.68.camel@indus> <20020604235443.GA1250@blimpo.internal.net>
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On Tue, Jun 04, 2002 at 07:54:43PM -0400, Ben Collins wrote:
> On Tue, Jun 04, 2002 at 04:14:26PM -0400, Shanti Katta wrote:
> > Hi,
> > I am trying to port user-mode-linux(uml) to Sparc64 arch. I am running a
> > custom built 2.4.18 kernel on debian (sid), Ultra 1 system. I have also
> > created static links sparc64-linux-ld and sparc64-linux-as. When I build
> > the uml sources, I am getting the following linker error:
> > 
> > gcc-3.0  -Wall -Wstrict-prototypes -Wno-trigraphs -O2
> > -fomit-frame-pointer -fno-strict-aliasing -fno-common -U__sparc64__
> > -Usparc64 -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow
> > -ffixed-g4 -fcall-used-g5 -fcall-used-g7 -Wno-sign-compare
> > -Wa,--undeclared-regs -D__arch_um__ -DSUBARCH=\"sparc64\" -DNESTING=0
> > -D_LARGEFILE64_SOURCE  -I/home/shanti/UML/UMLSparc64/arch/um/include
> > -D_GNU_SOURCE -c -o unmap.o unmap.c
> > ld -r -o unmap_fin.o unmap.o -lc -L/usr/lib
> > ld: warning: sparc:v9 architecture of input file `unmap.o' is
> > incompatible with sparc output
> > ld: BFD 2.12.90.0.1 20020307 Debian/GNU Linux assertion fail
> > ../../bfd/elflink.h:2817
> > ld: final link failed: Bad value
> > 
> > I am using gcc-3.0 with binuitls 2.12.90.0.0.1-5. When I tried using gcc
> > with egcs64, it gave me a bunch of parse errors. Hence, I switched to
> > gcc-3.0. But now, I have this linker error. Any pointers in this
> > direction would be appreciated.
> 
> gcc-3.0 may not work well. Eitherway, copy the CFLAGS/LDFLAGS from
> arch/sparc64/Makefile. For this example above, you are missing -m64 as
> an option to make it output 64bit executables.

Oh, my mistake. The CFLAGS are fine, but the LDFLAGS aren't. Looks like
it is missing "-m elf64_sparc".

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