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Using -m64 on sparc gcc
- From: Raúl Porcel <armin76 at gentoo dot org>
- To: gcc-help at gcc dot gnu dot org
- Date: Wed, 09 Apr 2008 18:45:52 +0200
- Subject: Using -m64 on sparc gcc
Hello,
actually in Gentoo we're using two compilers, one for the kernel(64 bit)
and one for the userland(32bit). The compilers are called
sparc64-unknown-linux-gnu and sparc-unknown-linux-gnu respectively. The
64bit compiler is just used for compiling the kernel, while the userland
is only 32bit.
From kernel-2.6.25 a hack has been removed, that allowed us to
automatically compile the kernel with the 64bit compiler. You can see
more info at [1]. But now we have to use 'make
CROSS_COMPILE="/usr/bin/sparc64-unknown-linux-gnu-"'. GCC on sparc
doesn't seem to support the two modes, therefore the kernel fails to
build, since it uses sparc-unkown-linux-gnu by default, calling -m64.
I explained this to our toolchain monkey at [2] and he told me to write
here.
So, what would be the action to take? Debian seems to have it patched in
their toolchain but not submitted to upstream.
Thanks,
[1] http://marc.info/?l=linux-sparc&m=120638895101756
[2] http://bugs.gentoo.org/show_bug.cgi?id=214765