Re: Glibc/Hurd Building

[Ludovic Courtès]

Manolis Ragkousis <address@hidden> skribis:

> While building glibc, with ./pre-inst-env guix build -e '((@@ (gnu packages
> cross-base) cross-gcc) "i686-pc-gnu")' I noticed in the config.log file
> this:
>
>>  COLLECT_GCC=gcc
>>
> COLLECT_LTO_WRAPPER=/gnu/store/z8qifq9172ad17a7mxg9w8jq51axwwqr-gcc-4.8.2/libexec/gcc/x86_64-unknown-linux-gnu/4.8.2/lto-wrapper
>>  Target: x86_64-unknown-linux-gnu

[...]

> It was created by GNU C Library configure (see version.h), which was
> generated by GNU Autoconf 2.68.  Invocation command line was
>
>   $ ../source/configure 
> CONFIG_SHELL=/gnu/store/281n6ma5jxy9sb3nwc09mzpqx43vczr6-bash-4.2/bin/bash 
> SHELL=/gnu/store/281n6ma5jxy9sb3nwc09mzpqx43vczr6-bash-4.2/bin/bash 
> --prefix=/gnu/store/c4z6ggr03cz9ary8pi8rzdwikrzyn4as-glibc-hurd-cross-i686-pc-gnu-2.18
>  --enable-fast-install LDFLAGS=-m32 --without-cvs --enable-add-ons 
> --build=i686-pc-gnu --target=i686-pc-gnu --disable-profile 
> --disable-multi-arch --disable-sanity-checks --disable-nscd 
> --enable-obsolete-rpc --enable-stackguard-randomization 
> libc_cv_localedir=/gnu/store/g99nvj3xcncswig8mhmpz6d091pgs6fr-glibc-hurd-cross-i686-pc-gnu-2.18-locales/share/locale
>  BASH_SHELL=/gnu/store/281n6ma5jxy9sb3nwc09mzpqx43vczr6-bash-4.2/bin/bash 
> build_alias=i686-pc-gnu target_alias=i686-pc-gnu --no-create --no-recursion

Here glibc is configured with --build=i686-pc-gnu --target=i686-pc-gnu;
thus ./configure thinks it’s a native build on GNU/Hurd.

Instead glibc should be configure with just --host=i686-pc-gnu (and no
need for -m32 either.)  This is what ‘cross-libc’ does.

HTH!

Ludo’.