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Re: Initial cross-compilation support

From: Ludovic Courtès
Subject: Re: Initial cross-compilation support
Date: Thu, 28 Mar 2013 14:38:07 +0100
User-agent: Gnus/5.130005 (Ma Gnus v0.5) Emacs/24.2 (gnu/linux)

Nikita Karetnikov <address@hidden> skribis:

> I tried to add
>   "--with-arch=mips64"
>   "--with-abi=64"
> to '#:configure-flags' of 'cross-gcc'.  It failed:

So it’s glibc that fails to build, but the initial “sans libc”
cross-compiler is correctly built.

> /nix/store/g9js73bwv1fl92h1nnf50vf1619irnxf-gcc-cross-sans-libc-mips64el-linux-gnu-4.7.2/libexec/gcc/mips64el-linux-gnu/ld:
> /nix/store/g9js73bwv1fl92h1nnf50vf1619irnxf-gcc-cross-sans-libc-mips64el-linux-gnu-4.7.2/lib/gcc/mips64el-linux-gnu/4.7.2/libgcc.a(_fpcmp_parts_tf.o):
>  ABI is incompatible with that of the selected emulation

This may indicate that glibc was built for N32, whereas libgcc &
co. were built for N64.

Can you run ‘file’ on libgcc.a (or one of the .o files it contains)?
Can you check in the glibc log whether a -mabi flag is passed?

You may need to explicitly add -mabi=64 for glibc.  It should be
possible to do it with something like:

  #:configure-flags '("CFLAGS=-mabi=64 -g -O2")


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