void-packages/helpers/mktoolchain.sh

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#!/bin/sh
#
# Script to be able to build a full cross toolchain for Linux/x86.
# This has been made thanks to various sources recollected from wikipedia
# and other cross compiling related pages.
# Setup some defaults
: ${GNU_URL_BASE:=http://ftp.gnu.org/gnu}
: ${KERNEL_URL_BASE:=http://www.kernel.org/pub/linux/kernel/v2.6}
: ${GCC_VER:=4.3.2}
: ${BINUTILS_VER:=2.19}
: ${GLIBC_VER:=2.7}
: ${KERNEL_VER:=2.6.27.3}
: ${CROSSDIR:=$HOME/mktoolchain}
: ${BUILDDIR:=$CROSSDIR/build}
: ${SOURCEDISTDIR:=$BUILDDIR/sources}
: ${FETCH_CMD:=wget}
usage()
{
echo "usage: $0 [-b dir] [-c dir] [-s dir] <target triplet>"
echo
echo "Optional flags:"
echo " -b Directory to be used for temporary building."
echo " -c Directory to be used for final cross tools."
echo " -s Directory where the sources are available."
exit 1
}
check_path()
{
local orig="$1"
case "$orig" in
/) ;;
/*) orig="${orig%/}" ;;
*) orig="$PWD/${orig%/}" ;;
esac
SANITIZED_DESTDIR=$orig
}
fetch_sources()
{
local pkg=
cd $SOURCEDISTDIR || exit 1
pkg=linux
if [ ! -f $pkg-$KERNEL_VER.tar.bz2 ]; then
echo "Fetching $pkg kernel-$KERNEL_VER sources..."
$FETCH_CMD $KERNEL_URL_BASE/$pkg-$KERNEL_VER.tar.bz2 || exit 1
fi
pkg=gcc
if [ ! -f $pkg-$GCC_VER.tar.bz2 ]; then
echo "Fetching $pkg-$GCC_VER..."
$FETCH_CMD $GNU_URL_BASE/$pkg/$pkg-$GCC_VER.tar.bz2 || exit 1
fi
pkg=binutils
if [ ! -f $pkg-$BINUTILS_VER.tar.bz2 ]; then
echo "Fetching $pkg-$BINUTILS_VER..."
$FETCH_CMD $GNU_URL_BASE/$pkg/$pkg-$BINUTILS_VER.tar.bz2 \
|| exit 1
fi
pkg=glibc
if [ ! -f $pkg-$GLIBC_VER.tar.bz2 ]; then
echo "Fetching $pkg-$GLIBC_VER..."
$FETCH_CMD $GNU_URL_BASE/$pkg/$pkg-$GLIBC_VER.tar.bz2 || exit 1
fi
}
kernel_headers()
{
local pkg="linux-$KERNEL_VER"
cd $BUILDDIR || exit 1
tar xfj $SOURCEDISTDIR/$pkg.tar.bz2 -C $BUILDDIR || exit 1
cd $pkg || exit 1
make ARCH=$KERNEL_ARCH headers_check || exit 1
make ARCH=$KERNEL_ARCH headers_install \
INSTALL_HDR_PATH=$SYSROOT/usr || exit 1
cd $SYSROOT/usr/include && ln -s asm asm-$KERNEL_ARCH
cd $BUILDDIR && rm -rf $pkg || exit 1
touch -f $BUILDDIR/.kernel_headers_done
}
binutils()
{
local pkg="binutils-$BINUTILS_VER"
cd $BUILDDIR || exit 1
if [ ! -d $pkg ]; then
tar xfj $SOURCEDISTDIR/$pkg.tar.bz2 -C $BUILDDIR || exit 1
fi
cd $pkg || exit 1
[ ! -d build ] && mkdir build || exit 1
cd build || exit 1
../configure --prefix=$CROSSDIR \
--target=$CROSS_TARGET \
--with-sysroot=$SYSROOT \
--with-build-sysroot=$SYSROOT \
--disable-nls --enable-shared \
--disable-multilib || exit 1
make configure-host && make && make install || exit 1
# Remove unneeded stuff
for f in info man share; do
[ -d $CROSSDIR/$f ] && rm -rf $CROSSDIR/$f
done
cd $BUILDDIR && rm -rf $pkg || exit 1
touch -f $BUILDDIR/.binutils_done
}
glibc_patches()
{
# Apply some required patches for i[56]86-pc-linux-gnu and
# common targets.
$FETCH_CMD http://www.freesa.org/toolchain/patches/glibc-2.7-fixup_for_gcc43-1.patch
$FETCH_CMD http://www.freesa.org/toolchain/patches/glibc-2.7-i586_chk-1.patch
$FETCH_CMD http://www.freesa.org/toolchain/patches/glibc-2.7-libgcc_eh-1.patch
$FETCH_CMD http://svn.exactcode.de/t2/trunk/package/base/glibc/x86-fnstsw.patch
patch -Np1 -i glibc-2.7-fixup_for_gcc43-1.patch || exit 1
patch -Np1 -i glibc-2.7-i586_chk-1.patch || exit 1
patch -Np1 -i glibc-2.7-libgcc_eh-1.patch || exit 1
patch -Np1 -i x86-fnstsw.patch || exit 1
touch -f $BUILDDIR/glibc-$GLIBC_VER/.patches_done
}
gcc()
{
local stage="$1"
local pkg="gcc-$GCC_VER"
local configure_args=
local make_args=
local make_install_args=
local touch_f=
cd $BUILDDIR || exit 1
if [ ! -d $pkg ]; then
tar xfj $SOURCEDISTDIR/$pkg.tar.bz2 -C $BUILDDIR || exit 1
fi
[ ! -d $pkg/build ] && mkdir $pkg/build
cd $pkg/build || exit 1
case $stage in
full)
# gcc with support for C and C++.
touch_f=".gcc_full_done"
make_args="AS_FOR_TARGET=$CROSS_TARGET-as"
make_args="$make_args LD_FOR_TARGET=$CROSS_TARGET-ld"
make_install_args="install"
configure_args="--enable-threads=posix"
configure_args="$configure_args --enable-languages=c,c++"
configure_args="$configure_args --enable-__cxa_atexit"
configure_args="$configure_args --enable-tls"
;;
libgcc)
# Enough to be able to build full glibc.
make all-target-libgcc && make install-target-libgcc || exit 1
rm -rf $SYSROOT/lib/crt* || exit 1
touch -f $BUILDDIR/.gcc_libgcc_done
cd $BUILDDIR/$pkg && rm -rf build
return 0
;;
bootstrap)
# gcc bootstrap
touch_f=".gcc_bootstrap_done"
make_args="all-gcc"
make_install_args="install-gcc"
configure_args="--disable-shared --disable-libmudflap"
configure_args="$configure_args --disable-threads"
configure_args="$configure_args --disable-libssp"
configure_args="$configure_args --enable-languages=c"
;;
*) ;;
esac
../configure --prefix=$CROSSDIR \
--build=$CROSS_HOST --host=$CROSS_HOST \
--target=$CROSS_TARGET \
--with-sysroot=$SYSROOT \
--with-build-sysroot=$SYSROOT \
--disable-multilib \
${configure_args} || exit 1
env LDFLAGS_FOR_TARGET="--sysroot=$SYSROOT" \
CPPFLAGS_FOR_TARGET="--sysroot=$SYSROOT" \
make ${make_args} && make ${make_install_args} || exit 1
# Remove unneeded stuff
for f in info share man; do
[ -d $CROSSDIR/$f ] && rm -rf $CROSSDIR/$f
done
# Do not remove builddir if bootstrap, we want all objs for
# the libgcc pass.
if [ "$stage" != "bootstrap" ]; then
cd $BUILDDIR/$pkg && rm -rf build || exit 1
fi
touch -f $BUILDDIR/$touch_f
}
glibc()
{
local stage="$1"
local pkg="glibc-$GLIBC_VER"
local touch_f=
local cross_binutils="$CROSSDIR/$CROSS_TARGET/bin"
local configure_args=
local CC=
local BUILD_CC=
local RANLIB=
local AR=
cd $BUILDDIR || exit 1
if [ ! -d $pkg ]; then
tar xfj $SOURCEDISTDIR/$pkg.tar.bz2 -C $BUILDDIR || exit 1
fi
cd $pkg || exit 1
[ ! -f .patches_done ] && glibc_patches
[ ! -d build ] && mkdir build
cd build || exit 1
# NPTL support.
echo "libc_cv_forced_unwind=yes" > config.cache
echo "libc_cv_c_cleanup=yes" >> config.cache
if [ "$KERNEL_ARCH" = "i386" ]; then
echo "CFLAGS+=-march=${CROSS_TARGET%%-*} -mtune=generic" \
> configparms
fi
case $stage in
startup|full)
BUILD_CC=$CROSS_TARGET-gcc
CC=$CROSS_TARGET-gcc
AR=$CROSS_TARGET-ar
RANLIB=$CROSS_TARGET-ranlib
configure_args="${configure_args} --with-binutils=$CROSSDIR/bin"
configure_args="${configure_args} --cache-file=config.cache"
;;
headers)
CC=gcc
configure_args="${configure_args} --with-binutils=$cross_binutils"
configure_args="${configure_args} --disable-sanity-checks"
;;
*) ;;
esac
CC=${CC} BUILD_CC=${BUILD_CC} AR=${AR} RANLIB=${RANLIB} \
../configure --prefix=/usr \
--host=$CROSS_TARGET --build=$CROSS_HOST \
--enable-kernel=2.6.25 --with-tls \
--with-__thread --without-selinux \
--without-gd --without-cvs --disable-profile \
--enable-add-ons \
--with-headers=$SYSROOT/usr/include \
${configure_args} || exit 1
case $stage in
startup)
touch_f=".glibc_startup_done"
make -r -C ../csu objdir=$PWD $PWD/csu/crt1.o || exit 1
make -r -C ../csu objdir=$PWD $PWD/csu/crti.o || exit 1
make -r -C ../csu objdir=$PWD $PWD/csu/crtn.o || exit 1
mkdir -p $SYSROOT/lib || exit 1
cp -f csu/crt1.o csu/crti.o csu/crtn.o $SYSROOT/lib || exit 1
;;
headers)
touch_f=".glibc_headers_done"
make cross-compiling=yes \
install_root=$SYSROOT install-headers || exit 1
cp -v bits/stdio_lim.h $SYSROOT/usr/include/bits || exit 1
touch $SYSROOT/usr/include/gnu/stubs.h || exit 1
cp -v ../nptl/sysdeps/pthread/pthread.h \
$SYSROOT/usr/include || exit 1
if [ "$KERNEL_ARCH" = "i386" ]; then
local bitsdir="nptl/sysdeps/unix/sysv/linux/i386/bits"
cp -v ../$bitsdir/pthreadtypes.h \
$SYSROOT/usr/include/bits || exit 1
fi
;;
full)
touch_f=".glibc_full_done"
make && make install_root=$SYSROOT install || exit 1
;;
esac
if [ "$stage" != "headers" ]; then
cd $BUILDDIR/$pkg && rm -rf build || exit 1
fi
touch -f $BUILDDIR/$touch_f
}
while getopts "b:c:s:" opt; do
case $opt in
b) BUILDDIR=$OPTARG
check_path $BUILDDIR
BUILDDIR=$SANITIZED_DESTDIR
;;
c) CROSSDIR=$OPTARG
check_path $CROSSDIR
CROSSDIR=$SANITIZED_DESTDIR
;;
s) SOURCEDISTDIR=$OPTARG
check_path $SOURCEDISTDIR
SOURCEDISTDIR=$SANITIZED_DESTDIR
;;
--) shift; break;;
esac
done
shift $(($OPTIND - 1))
[ $# -ne 1 ] && usage
if [ -z "$1" ]; then
echo "ERROR: missing target triplet."
exit 1
else
CROSS_TARGET=$1
case $CROSS_TARGET in
i686-pc-linux-gnu)
KERNEL_ARCH=i386
CROSS_HOST=x86_64-unknown-linux-gnu
;;
x86-64-unknown-linux-gnu)
KERNEL_ARCH=x86_64
CROSS_HOST=i686-pc-linux-gnu
;;
*)
echo "ERROR: unknown target triplet $CROSS_TARGET."
exit 1
;;
esac
fi
CROSSDIR=$CROSSDIR/$CROSS_TARGET
SYSROOT=$CROSSDIR/sysroot
[ ! -d $SYSROOT/usr ] && mkdir -p $SYSROOT/usr
[ ! -d $BUILDDIR ] && mkdir -p $BUILDDIR
[ ! -d $SOURCEDISTDIR ] && mkdir -p $SOURCEDISTDIR
unset CFLAGS CXXFLAGS CC CXX AR AS RANLIB LD_STRIP
unset LD_LIBRARY_PATH LD_RUN_PATH
export PATH="$CROSSDIR/bin:/bin:/usr/bin"
fetch_sources
if [ ! -f $BUILDDIR/.kernel_headers_done ]; then
echo "Installing kernel headers..."
kernel_headers
fi
if [ ! -f $BUILDDIR/.binutils_done ]; then
echo "Installing binutils..."
binutils
fi
if [ ! -f $BUILDDIR/.glibc_headers_done ]; then
echo "Installing glibc headers..."
glibc headers
fi
if [ ! -f $BUILDDIR/.gcc_bootstrap_done ]; then
echo "Installing gcc (bootstrap)..."
gcc bootstrap
fi
if [ ! -f $BUILDDIR/.glibc_startup_done ]; then
echo "Installing glibc (startup)..."
glibc startup
fi
if [ ! -f $BUILDDIR/.gcc_libgcc_done ]; then
echo "Installing gcc (libgcc)..."
gcc libgcc
fi
if [ ! -f $BUILDDIR/.glibc_full_done ]; then
echo "Installing glibc (full)..."
glibc full
fi
if [ ! -f $BUILDDIR/.gcc_full_done ]; then
echo "Installing gcc (full)..."
gcc full
fi
[ -d $BUILDDIR ] && rm -rf $BUILDDIR
echo "Finished. Toolchain for $CROSS_TARGET at $CROSSDIR."
exit 0