From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jan Nieuwenhuizen <janneke@gnu.org>
Subject: SOLVED: Re: gcc-4.7.4: libgcc2.h:157: error: unable to emulate 'TF'
Date: Wed, 11 Jul 2018 19:01:54 +0200
Message-ID: <87pnztln99.fsf_-_@gnu.org>
References: <87sh4sny8j.fsf@gnu.org> <5B43A955.7090904@mutluit.com>	<87muv0nqoi.fsf@gnu.org> <5B442D84.8030805@mutluit.com>	<CAE4v=piZcS7d5=wu8j0i-yhdd+9go6bLo3pg-wN7WWXon2KhMA@mail.gmail.com>	<87sh4rm8nb.fsf@gnu.org> <87601mna30.fsf@gnu.org>	<5B452C86.6090003@mutluit.com>
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In-Reply-To: <5B452C86.6090003@mutluit.com> (U. Mutlu's message of "Wed, 11	Jul 2018 00:00:38 +0200")
To: "U.Mutlu" <um@mutluit.com>
Cc: gcc-help@gcc.gnu.org, guix-devel@gnu.org
List-Id: guix-devel.gnu.org

U.Mutlu writes:

> Just a tip: you can build the compiler much faster if you use --disable-b=
ootstrap
> (here it reduces the compile time from 111 minutes down to 12 minutes).
> After it's ok, then you can build w/o it to also test the
> bootstrapping.

Thanks!  I'm very grateful for your help.  I succeeded in building
gcc-4.7.4 from almost no binary seeds[0] for GuixSD!

The weird error in Subject was caused by configure+make (and my usage of
configure flags, environment settings) trying to use CC_FOR_BUILD (the
i368-unknow-linux-gcc 2.95.3 compiler) to build libgcc2.c

Here's the configure that I used, which works.

../build/configure\
 --build=3Di686-unknown-linux-gnu\
 --host=3Di686-unknown-linux-gnu\
 --with-native-system-header-dir=3D/gnu/store/lwadx3lm73f8rmy8cvwijrflb9wgc=
m7j-glibc-mesboot-2.2.5/include\
 --with-build-sysroot=3D/gnu/store/lwadx3lm73f8rmy8cvwijrflb9wgcm7j-glibc-m=
esboot-2.2.5/include\
 --prefix=3D/gnu/store/bci6j4dfrmkfzqbpbbcz5ypk8xmr0j5z-gcc-mesboot-4.7.4\
 --disable-bootstrap\
 --disable-decimal-float\
 --disable-libatomic\
 --disable-libcilkrts\
 --disable-libgomp\
 --disable-libitm\
 --disable-libmudflap\
 --disable-libquadmath\
 --disable-libsanitizer\
 --disable-libssp\
 --disable-libvtv\
 --disable-lto\
 --disable-lto-plugin\
 --disable-multilib\
 --disable-plugin\
 --disable-shared\
 --disable-threads\
 --enable-languages=3Dc\
 --enable-static\
 --enable-threads=3Dsingle\
 --disable-libstdc__-v3\
 --disable-libstdcxx-pch\
 --disable-build-with-cxx

Greetings,
janneke

[0] http://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/mes.scm?h=
=3Dwip-bootstrap

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Jan Nieuwenhuizen <janneke@gnu.org> | GNU LilyPond http://lilypond.org
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