GCC Toolchain for EPOS

The following howto is actually an executable script. With a bit of luck, you can simply copy&past it into a shell. It illustrates how to compile the GCC toolchain for x86, but you can select virtually any GCC target as long as it is ELF.

#/bin/sh
# GCC Toolchain for EPOS on x86 (ia32)

BINUTILS=2.20
GCC=4.4.4
GMP=4.3.2
MPFR=2.4.2
NEWLIB=1.18.0

TARGET=i686-elf
PREFIX=/usr/local/ia32/gcc-$GCC
PROG_PREFIX=ia32-

BUILD=/tmp
CONTRIB=/usr/local/contrib/linux/development


# Wget
cd $CONTRIB
if [ ! -e binutils-$BINUTILS.tar.bz2 ] ; then
    wget ftp://ftp.gnu.org/gnu/binutils/binutils-$BINUTILS.tar.bz2
fi
if [ ! -e gcc-$GCC.tar.bz2 ] ; then
    wget ftp://ftp.gnu.org/gnu/gcc/gcc-$GCC/gcc-$GCC.tar.bz2
fi
if [ ! -e gmp-$GMP.tar.bz2 ] ; then
    wget ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-$GMP.tar.bz2
fi
if [ ! -e mpfr-$MPFR.tar.bz2 ] ; then
    wget ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-$MPFR.tar.bz2
fi
if [ ! -e gcc-g++-$GCC.tar.bz2 ] ; then
    wget ftp://ftp.gnu.org/gnu/gcc/gcc-$GCC/gcc-g++-$GCC.tar.bz2
fi
if [ ! -e newlib-$NEWLIB.tar.gz ] ; then
    wget ftp://sources.redhat.com/pub/newlib/newlib-$NEWLIB.tar.gz
fi

# Unpack
cd $BUILD
tar jxf $CONTRIB/binutils-$BINUTILS.tar.bz2 
tar jxf $CONTRIB/gcc-$GCC.tar.bz2
cd gcc-$GCC
tar jxf $CONTRIB/gmp-$GMP.tar.bz2
ln -s gmp-$GMP gmp
tar jxf $CONTRIB/mpfr-$MPFR.tar.bz2
ln -s mpfr-$MPFR mpfr
cd ..
tar jxf $CONTRIB/gcc-g++-$GCC.tar.bz2
tar zxf $CONTRIB/newlib-$NEWLIB.tar.gz

# Binutils
cd $BUILD
mkdir $TARGET-binutils-build
cd $TARGET-binutils-build
../binutils-$BINUTILS/configure --target=$TARGET --prefix=$PREFIX --program-prefix=$PROG_PREFIX 
make
make install
ln -s $PREFIX/bin/$PROG_PREFIX""ar $PREFIX/bin/$TARGET-ar
ln -s $PREFIX/bin/$PROG_PREFIX""as $PREFIX/bin/$TARGET-as
ln -s $PREFIX/bin/$PROG_PREFIX""ld $PREFIX/bin/$TARGET-ld
ln -s $PREFIX/bin/$PROG_PREFIX""ranlib $PREFIX/bin/$TARGET-ranlib
cd $BUILD
rm -rf $TARGET-binutils-build

# GCC (C-only)
cd $BUILD
mkdir $TARGET-gcc-build
cd $TARGET-gcc-build
export PATH=$PATH:$PREFIX/bin
../gcc-$GCC/configure --target=$TARGET --prefix=$PREFIX --program-prefix=$PROG_PREFIX --enable-languages=c --disable-libssp
make
make install
ln -s $PREFIX/bin/$PROG_PREFIX""gcc $PREFIX/bin/$TARGET-cc
cd $BUILD
rm -rf $TARGET-gcc-build

# Newlib
cd $BUILD
cd newlib-$NEWLIB
./configure --target=$TARGET --prefix=$PREFIX --program-prefix=$PROG_PREFIX
make
make install

# GCC (C and C++)
cd $BUILD
mkdir $TARGET-gcc-build
cd $TARGET-gcc-build
# This is what we wanted to do, but it produces a compiler that disagrees about
# the definition of "size_t" with the rest of the world
../gcc-$GCC/configure --target=$TARGET --prefix=$PREFIX --program-prefix=$PROG_PREFIX --enable-languages=c,c++ --disable-nls --disable-multilib --disable-libssp --with-newlib --disable-shared --disable-threads --enable-target-optspace --with-gnu-as --with-gnu-ld --without-headers
# so this was used
#../gcc-$GCC/configure --target=$TARGET --prefix=$PREFIX --program-prefix=$PROG_PREFIX --enable-languages=c,c++ --disable-nls --disable-shared --with-gnu-as --with-gnu-ld --disable-threads --disable-libssp 
make
make install
cd $BUILD
rm -rf $TARGET-gcc-build

# Clean up
find $PREFIX/bin -type l -exec rm \{} \;
cd $BUILD
rm -rf binutils-$BINUTILS
rm -rf gcc-$GCC
rm -rf newlib-$NEWLIB