#
# README
#
# By Shinpei Kato <shinpei@rt.k2.keio.ac.jp>
# On Sep 10, 2005
#
# This file instructs how to make a cross-compiler
# for RMT processor.
#


##################
# How to install #
##################


1. PREPARE A BUILD DIRECTORY & ENV

# $TOPDIR is your top directory for building.
% mkdir $TOPDIR
% mkdir $TOPDIR/build-binutils
% mkdir $TOPDIR/build-gcc
% cd $TOPDIR
% tar -zxf gcc-rmt-X.X.X.tar.gz
% tar -zxf binutils-rmt-X.X.X.tar.gz
% export PREFIX=/usr/local/rmt
% export TARGET=mips-rmt-elf

2. MAKE A BINUTILS

% cd $TOPDIR/build-binutils
% ../binutils-X.X/configure --prefix=$PREFIX
                            --target=$TARGET
% make
% sudo make install


3. MAKE A GCC

# if you want libc, you can use newlib.
# % cd $TOPDIR
# % tar -zxf newlib-resp3-X.X.X.tar.gz
# % cd gcc-X.X.X
# % ln -s ../newlib.X.X.X/newlib .
# % ln -s ../newlib.X.X.X/libgloss .
% cd $TOPDIR/build-gcc
% ../gcc-X.X.X/configure --prefix=$PREFIX
                         --target=$TARGET
                         --with-newlib
                         --with-gnu-as
                         --with-gnu-ld
                         --enable-languages=c,c++ # depends on the languages you want
% make
% sudo make install


4. TRY COMPILING

# example for normal RMTP
% mips-rmt-elf-gcc -mrmtp -T rmtelf32.ld crt0.o -o hoge hoge.c 

# example for uRMTP
% mips-rmt-elf-gcc -murmtp -T rmtelf32.ld crt0.o -o hoge hoge.c