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can't build x86-32 libc on x86-64 with mainline binutils
- From: Alexandre Oliva <aoliva at redhat dot com>
- To: libc-alpha at sources dot redhat dot com, binutils at sources dot redhat dot com
- Date: Thu, 02 Mar 2006 15:06:57 -0300
- Subject: can't build x86-32 libc on x86-64 with mainline binutils
Am I the only one having trouble assembling
glibc/sysdeps/i386/fpu/e_atanh.S with -m32 with binutils mainline
toplevel-bootstrapped along with GCC trunk on x86_64? I've hit this
for several days now, maybe several weeks? (time flies)
The assembler fails the sanity check for carry == 0 on
gas/atof-generic.c:419 on line 40 of the preprocessed asm file. In
fact, assembling that line by itself produces the same error.
Here's how I configured the toolchain:
../configure amd64-linux-gnu --enable-languages=all
and here's how I configured glibc:
../src/configure '--prefix=/usr' '--enable-add-ons=nptl' \
'--without-cvs' '--with-tls' '--with-headers=/usr/include' \
'--build=i686-pc-linux-gnu' 'CC=gcc -m32 -march=i686 -U__i686' \
'CXX=g++ -m32 -march=i686 -U__i686'
(the ugly -U__i686 was introduced months ago; IIRC without it we'd
fail to assemble the GOT register set up routines that have __i686 in
their names in such a way that the preprocessor would expand __i686 to
1. I haven't tried without it, I've only just realized it was still
there)
Using binutils-2.16.91.0.6-2 from the Fedora Core development tree
works.
--
Alexandre Oliva http://www.lsd.ic.unicamp.br/~oliva/
Secretary for FSF Latin America http://www.fsfla.org/
Red Hat Compiler Engineer aoliva@{redhat.com, gcc.gnu.org}
Free Software Evangelist oliva@{lsd.ic.unicamp.br, gnu.org}