josch

#!/bin/bash

# ----------------------

KERNEL_ARCHIVE=/usr/src/linux-source-2.6.18.tar.bz2
KERNEL=linux-source-2.6.18
SQUASHFS_LATEST_KERNEL_PATCH=linux-2.6.18
SQUASHFS=squashfs3.3
LZMA=lzma457

# ----------------------

eecho()
{
   echo "-------------------------------------"
   echo " * " "$@"
   echo "-------------------------------------"
}

set -e
CURDIR=`pwd`
TMP=$CURDIR/build
PKG=$CURDIR/target

eecho "setting up build and target dir"
rm -Rf $TMP
mkdir -p $TMP
rm -Rf $PKG
mkdir -p $PKG
cd $TMP
K=`echo $TMP/$KERNEL | sed -r s/'\/'/'\\\\\/'/g`

eecho "Unpacking archives"

mkdir -p $LZMA
echo $LZMA
tar -C $LZMA -xf $CURDIR/$LZMA.tar.*
echo $SQUASHFS
tar -xf $CURDIR/$SQUASHFS.tar.*
echo $KERNEL
tar -xf $KERNEL_ARCHIVE
ln -s $KERNEL ./linux
ln -s $KERNEL ./linux-2.6.24.3
echo "Squashfs LZMA patches"
tar -xf $CURDIR/patches/squashfs/sqlzma.tar.*

eecho "Preparing kernel: squashfs + lzma patches"

cd $TMP/$KERNEL
patch -p1 < $TMP/$SQUASHFS/kernel-patches/$SQUASHFS_LATEST_KERNEL_PATCH/*patch

cd $TMP
patch -p0 < $TMP/sqlzma2k-3.3.patch
patch -p0 < $TMP/sqlzma2u-3.3.patch

patch -p0 < $CURDIR/patches/squashfs/cvs/typo_mkflags_u.patch
patch -p0 < $CURDIR/patches/squashfs/cvs/unsquashfs_bugfixes.patch
patch -p0 < $CURDIR/patches/squashfs/cvs/mksquashfs_trace_fixes.patch
patch -p0 < $CURDIR/patches/squashfs/cvs/mksquashfs_unused_vars.patch
patch -p0 < $CURDIR/patches/squashfs/cvs/mksquashfs_code_cleanups.patch
patch -p0 < $CURDIR/patches/squashfs/cvs/mksquashfs_bug_fixes.patch
#patch -p0 < $CURDIR/patches/squashfs/cvs/missing_void.patch
patch -p0 < $CURDIR/patches/squashfs/cvs/code_cleanup.patch

cd $KERNEL
#patch -p1 < $CURDIR/patches/squashfs/cvs/static_declarations.patch
patch -p1 < $CURDIR/patches/squashfs/cvs/typo_mkflags_k.patch

# I need to remove the following 2.6.24.3 patch in order to even compile the kernel. Why?
patch -p1 -R < $CURDIR/patches/kernel_compile.patch

cd $TMP/$LZMA
patch -p1 < $TMP/sqlzma1-449.patch

cd $TMP/$SQUASHFS/squashfs-tools
patch -p0 < $CURDIR/patches/squashfs/mksquashfs.quiet.patch

cd $TMP
cat Makefile | sed -r "s/KDir = .*/KDir = $K/" \
             | sed -r "s/SqFs = .*/SqFs = $K\/fs\/squashfs\//" \
             | sed -r "s/LzmaVer =.*/LzmaVer = $LZMA/" \
             | sed -r "s/C=1/C=0/" >Makefile2
cat Makefile2 >Makefile

cd $TMP/$KERNEL
eecho "configuring kernel"
# squashfs will be compiled separately, so make sure it's not in the kernel configuration
#cat $CURDIR/config | grep -v "CONFIG_SQUASHFS_" | sed -r "s/.*CONFIG_SQUASHFS[^_]*/CONFIG_SQUASHFS=n/" > ./.config
make oldconfig
make scripts
make prepare

#eecho "compiling kernel"
#cd $TMP/$KERNEL
#make -j 3 modules
#INSTALL_MOD_PATH=$PKG make modules_install
#make -j 3 bzImage

eecho "compiling squashfs+lzma and tools"
cd $TMP
make 2>&1 > $CURDIR/log
mkdir -p $PKG/usr/bin
cp $TMP/$SQUASHFS/squashfs-tools/{mk,un}squashfs $PKG/usr/bin
strip --strip-unneeded $PKG/usr/bin/*
mkdir -p $PKG/lib/modules/
cd $PKG/lib/modules/
rm -f modules.*
mkdir -p kernel/fs/squashfs/
cp $TMP/$LZMA/C/Compress/Lzma/kmod/{un,sq}lzma.ko kernel/fs/squashfs/
cp $TMP/$KERNEL/fs/squashfs/squashfs.ko kernel/fs/squashfs/

cd $PKG
if [ -e /sbin/makepkg ]; then
   makepkg -l n -c n $KERNEL-i486-1.tgz
   eecho "now install $PKG/$KERNEL-i486-1.tgz, run lilo & reboot"
else
   echo "your kernel is ready in $PKG"
fi

echo press any key...
read