#!/bin/bash

# install cross-binutils and cross-egcs, glibc-2.0.7 SRPMs from SGI FTP
#  into SOURCEDIR
# put kernel source into KERNELSRC (or uncomment below to install it)
# this process requires 400-500MB of free space, including source, intermediate
# build, and installed files.

# note that BUIDLROOT is wiped out at the beginning of this script.  also note
# that it is left at the end.  it can be safely deleted afterwards, otherwise
# you'll be wasting several hundreds of MB of storage space.
BUILDROOT=~/cdtest/cross-devtools-build
SOURCEDIR=~/cdtest/source
# This is the prefix for the HOST system, the one cross-build tools will run on
# the user running this script must have write permissions to this dir (which
# usually means being root if it's /usr or /usr/local)
PREFIX=~/cdtest/install
# This is the prefix on the TARGET system, usually /usr
TPREFIX=/usr
# TARGET is mips-linux for big endian, mipsel-linux for little endian
TARGET=mips-linux
KERNELARCH=mips
KERNELCONF=$BUILDROOT/linux/arch/mips/defconfig-vr
KERNELSRC=~/cdtest/source/linux


rm -rf $BUILDROOT
mkdir -p $BUILDROOT

# Note: the '|| exit 1's just mean "abort on error",
# otherwise the script will try to go on ...

echo --- Building binutils for $TARGET ---
cd $BUILDROOT
gzip -dc $SOURCEDIR/binutils-2.8.1.tar.gz | tar xf - || exit 1
cd binutils-2.8.1
patch -p1 < $SOURCEDIR/binutils-2.8.1-mips.patch || exit 1
mkdir build
cd build
../configure --prefix=$PREFIX --target=$TARGET || exit 1
make || exit 1
make install || exit 1

echo --- Building first egcs for $TARGET ---
cd $BUILDROOT
bzip2 -dc $SOURCEDIR/egcs-1.0.3a.tar.bz2 | tar xf - || exit 1
cd egcs-1.0.3a
patch -p1 < $SOURCEDIR/egcs-1.0.3a-mips.patch || exit 1
patch -p1 < $SOURCEDIR/egcs-1.0.3a-sgidefs.patch || exit 1
mkdir build1
cd build1
../configure --prefix=$PREFIX --program-prefix=$PREFIX/bin/$TARGET- \
      --with-newlib --target=$TARGET || exit 1
make SUBDIRS="libiberty texinfo gcc" ALL_TARGET_MODULES= \
      CONFIGURE_TARGET_MODULES= INSTALL_TARGET_MODULES= LANGUAGES="c" \
      || exit 1
make SUBDIRS="libiberty texinfo gcc" INSTALL_TARGET_MODULES= \
      LANGUAGES="c" install || exit 1

echo --- Configuring kernel build ---
#mkdir -p $KERNELSRC
#cd $KERNELSRC/..
#bzip2 -dc $SOURCEDIR/linux-2.3.99-pre3.tar.bz2 | tar xf - || exit 1
#cd linux
#patch -p1 < $SOURCEDIR/linux-2.3.99-pre3-linux-mips || exit 1
#patch -p1 < $SOURCEDIR/linux-2.3.99-pre3-linux-vr || exit 1
## TBD: if $KERSELSRC isn't [something]/linux, need to mv it
cd $KERNELSRC
cp -f $KERNELCONF .config
make ARCH=$KERNELARCH oldconfig || exit 1
make ARCH=$KERNELARCH CROSS_COMPILE=$PREFIX/bin/$TARGET- dep || exit 1
# This doesn't really need to succeed, it mostly just needs to generate
# some header files, but it's a good test of the cross-compiler
make ARCH=$KERNELARCH CROSS_COMPILE=$PREFIX/bin/$TARGET- || exit 1

echo --- Setting up kernel include headers for $TARGET ---
mkdir -p $PREFIX/$TARGET/include
rm -rf $PREFIX/$TARGET/include/asm
rm -rf $PREFIX/$TARGET/include/linux
ln -s $KERNELSRC/include/asm-$KERNELARCH $PREFIX/$TARGET/include/asm
ln -s $KERNELSRC/include/linux $PREFIX/$TARGET/include/linux

echo --- Building glibc for $TARGET ---
cd $BUILDROOT
gzip -dc $SOURCEDIR/glibc-2.0.7-980711.tar.gz  | tar xf - || exit 1
cd glibc-2.0.7
gzip -dc $SOURCEDIR/glibc-crypt-2.0.6.tar.gz | tar xf - || exit 1
gzip -dc $SOURCEDIR/glibc-localedata-2.0.7pre3.tar.gz | tar xf - || exit 1
gzip -dc $SOURCEDIR/glibc-linuxthreads-2.0.7pre5.tar.gz | tar xf - || exit 1
patch -p1 < $SOURCEDIR/glibc-2.0.7-preload.patch || exit 1
patch -p1 < $SOURCEDIR/glibc-2.0.7-localedata.patch || exit 1
patch -p1 < $SOURCEDIR/glibc-2.0.7-misc.patch || exit 1
patch -p1 < $SOURCEDIR/glibc-2.0.7-tz.patch || exit 1
patch -p1 < $SOURCEDIR/glibc-2.0.7-gafton.patch || exit 1
# some chunks of this next patch do fail, just let them...
patch -p1 -f < $SOURCEDIR/glibc-2.0.7-mips.patch
patch -p1 < $SOURCEDIR/glibc-2.0.7-mips2.patch || exit 1
patch -p1 < $SOURCEDIR/glibc-2.0.7-mips_from_2.0.6.patch || exit 1
mkdir build
cd build
CC=$PREFIX/bin/$TARGET-gcc \
      ../configure --prefix=$TPREFIX $TARGET \
      --enable-add-ons=crypt,linuxthreads,localedata --enable-profile || exit 1
echo CC=$PREFIX/bin/$TARGET-gcc > configparms
echo BUILD_CC=gcc >> configparms
echo AR=$PREFIX/bin/$TARGET-ar >> configparms
echo RANLIB=$PREFIX/bin/$TARGET-ranlib >> configparms
make || exit 1
# This overrides first few lines of build/make.config to install to right place:
make prefix=$PREFIX exec_prefix=$PREFIX/$TARGET slibdir=$PREFIX/$TARGET/lib \
      sysconfdir=$PREFIX/etc rootsbindir=$PREFIX/$TARGET/sbin install || exit 1
 
echo --- Building final egcs for $TARGET ---
cd $BUILDROOT/egcs-1.0.3a
mkdir build2
cd build2
../configure --prefix=$PREFIX --program-prefix=$PREFIX/bin/$TARGET- \
      --target=$TARGET || exit 1
make LANGUAGES="c c++" || exit 1
make LANGUAGES="c c++" install || exit 1