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"Martin Krischik" <martin.krischik@noser.com> writes:

> Anyway it compiler it I remove the -m64 option. So I guess it is a
> problem in handling x86_64 code. Which in turn means I will “only” be
> able to create a 32 bit compiler. Ahh well, better then nothing.

There were a lot of issues on the move to x86_64 on Snow Leopard (in
particular exception handling). The released 4.5.0 pretty much fixed
that. But, as I said, it works here with no problems - the 4.5.2 release
built (over 4.5.0, admittedly) with no problems, and I don't remember
much if any with gcc version 4.6.0 20110225 (experimental) [trunk
revision 157963] (GCC).

For what it's worth, this is the configure command line I used for 4.6.0:

../gcc-trunk-svn/configure --prefix=/opt/gcc-4.6.0-x86_64 \
--disable-multilib --enable-languages=c,ada,c++,fortran \
--with-gmp=/opt/gnu --with-mpfr=/opt/gnu --with-mpc=/opt/gnu \
--build=x86_64-apple-darwin10 --disable-bootstrap

(the GMP, MPFR and MPC links are to a set of static libraries - burnt
once too often by forgetting to give other users the dylibs).

Note the '--disable-bootstrap' confidence!