1. Toolchain

1.1 Tool versions

The following are the necessary utilities for creating the cross-compilation environment.

GNU gettext
ftp://ftp.gnu.org/puv/gnu/gettext/gettext-0.10.40.tar.gz
GNU libiconv
ftp://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.8.tar.gz
See the instructions in libiconv-1.8/README for instructions how to build GNU libiconv with GNU gettext.
GNU sed
ftp://ftp.gnu.org/pub/gnu/sed/sed-3.02.tar.gz
For some reason GNU sed 4.0.1 didn't work on NetBSD host. It worked fine with the GNU/NetBSD host, though.
GNU autoconf
ftp://ftp.gnu.org/pub/gnu/autoconf/autoconf-2.53.tar.gz
GNU binutils
:pserver:anoncvs@sources.redhat.com:/cvs/src
GCC
GCC source is a recent checkout from the gcc-3_2-branch at
:pserver:anoncvs@gcc.gnu.org:/cvs/gcc
GNU libc
:pserver:anoncvs@sources.redhat.com:/cvs/glibc

1.2 Configury

The build plarform is NetBSD 1.6 (i386-unknown-netbsdelf1.6J). The canonical name of the host (and target) configuration is i386-pc-netbsd-gnu. You'll need a recent version of config.sub and config.guess in order to recognize it. Get the from here config.guess.gz and here config.sub.gz.

Overwrite each config.sub and config.guess file in the GNU binutils, GCC and GNU libc source trees, e.g.:

find gcc-3.2 -name config.sub -exec cp config.sub {} \;

1.3 Autoconf

GNU autoconf needs this patch autoconf.diff.gz. It replaces a bogus use of not yet installed header <assert.h> with <limits.h>, which comes with the compiler.

1.4 GNU binutils

1.4.1 Building

Patch GNU Binutils with the following patch binutils.diff.gz.

Configure the GNU Binutils with:

configure --prefix=/usr/velco/toolchain --target=i386-netbsd-gnu

then build and install them as follows:

cd libiberty && gmake cd ../bfd && gmake cd ../opcodes && gmake cd ../intl && gmake cd ../binutils && gmake && gmake install cd ../gas && gmake && gmake install cd ../ld && gmake && gmake install

Add the the toolchain executables to the path:

export PATH=/usr/velco/toolchain/bin:$PATH

1.4.2 Changes

Made various config files recognize i386-netbsd-gnu platform.
ABI tags support in GDB.
So you can use a native GDB to debug the i386-netbsd-gnu binaries.