LinuxQuestions.org - Cross compiling gcc 4.x

If you have a multilib setup, it would generally go something like this:

Code:

$ OPTIONS="--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-languages=all"

$ wget ftp://ftp.gnu.org/gnu/gcc/gcc-4.2.0/gcc-4.2.0.tar.bz2

$ tar xf gcc-4.2.0.tar.bz2

$ cd gcc-4.2.0

$ mkdir build-amd64 build-i386

$ cd build-amd64

$ ../configure $OPTIONS

$ make

$ make install

$ cd ../build-i386

$ ../configure $OPTIONS --enable-bootstrap --target=i386-pc-linux-gnu

$ make bootstrap

$ make install

Of course you can change OPTIONS to whatever you need. You can also change --target (e.g., you might want i686-pc-linux-gnu instead). You also might want to do the “make install” steps in a sandbox so you can package it up for redistribution (which is what I assume this is for).

If you want more information on cross compiling, I suggest you check out CLFS.