#!/bin/bash -e
SDIR="$(dirname "$(readlink -f ${BASH_SOURCE[0]})")"
KVER="$(uname -r | awk -F. '{ printf(sprintf("%d",$3)=="0"?"%d.%d\n":"%d.%d.%d\n",$1,$2,$3); }')"
KDIR="/usr/src/linux-$(uname -r)"
SLVER="$(cat /etc/slackware-version | awk -F '[ .]' '{ printf("%d.%d\n",$2,$3); }')"

[ ! -d "$SDIR/packages" ] && mkdir $SDIR/packages
cd $SDIR/packages

[ ! -e "linux-$KVER.tar.xz" ] && wget --no-check-certificate http://www.kernel.org/pub/linux/kernel/v3.x/linux-$KVER.tar.xz

if [ `uname -m` == 'x86_64' ]; then
  mkdir -p slackware64-${SLVER}
  cd slackware64-${SLVER}
else
  mkdir -p slackware-${SLVER}
  cd slackware-${SLVER}
fi

if [ "$SLVER" == '13.1' ] && [ `uname -m` != 'x86_64' ]; then
  [ ! -e "gcc-4.4.4-i486-1.txz" ]                  && wget http://slackware.osuosl.org/slackware-13.1/slackware/d/gcc-4.4.4-i486-1.txz
  [ ! -e "kernel-headers-2.6.33.4_smp-x86-1.txz" ] && wget http://slackware.osuosl.org/slackware-13.1/slackware/d/kernel-headers-2.6.33.4_smp-x86-1.txz
  [ ! -e "glibc-2.11.1-i486-3.txz" ]               && wget http://slackware.osuosl.org/slackware-13.1/slackware/l/glibc-2.11.1-i486-3.txz
  [ ! -e "binutils-2.20.51.0.8-i486-1.txz" ]       && wget http://slackware.osuosl.org/slackware-13.1/slackware/d/binutils-2.20.51.0.8-i486-1.txz
  [ ! -e "make-3.81-i486-1.txz" ]                  && wget http://slackware.osuosl.org/slackware-13.1/slackware/d/make-3.81-i486-1.txz
  [ ! -e "cxxlibs-6.0.13-i486-2.txz" ]             && wget http://slackware.osuosl.org/slackware-13.1/slackware/a/cxxlibs-6.0.13-i486-2.txz
  [ ! -e "perl-5.10.1-i486-1.txz" ]                && wget http://slackware.osuosl.org/slackware-13.1/slackware/d/perl-5.10.1-i486-1.txz
  [ ! -e "patch-2.5.4-i486-1.txz" ]                && wget http://slackware.osuosl.org/slackware-13.1/slackware/a/patch-2.5.4-i486-1.txz
  [ ! -e "ncurses-5.7-i486-1.txz" ]                && wget http://slackware.osuosl.org/slackware-13.1/slackware/l/ncurses-5.7-i486-1.txz
  [ ! -e "mpfr-2.4.2p03-i486-1.txz" ]              && wget http://slackware.osuosl.org/slackware-13.1/slackware/l/mpfr-2.4.2p03-i486-1.txz
  [ ! -e "gcc-g++-4.4.4-i486-1.txz" ]              && wget http://slackware.osuosl.org/slackware-13.1/slackware/d/gcc-g++-4.4.4-i486-1.txz
  [ ! -e "pkg-config-0.23-i486-2.txz" ]            && wget http://slackware.osuosl.org/slackware-13.1/slackware/d/pkg-config-0.23-i486-2.txz
  [ ! -e "bc-1.06.95-i486-1.txz" ]                 && wget http://slackware.osuosl.org/slackware-13.1/slackware/ap/bc-1.06.95-i486-1.txz
  [ ! -e "cpio-2.9-i486-2.txz" ]                   && wget http://slackware.osuosl.org/slackware-13.1/slackware/a/cpio-2.9-i486-2.txz
elif [ "$SLVER" == '14.1' ] && [ `uname -m` == 'x86_64' ]; then
  [ ! -e "gcc-4.8.2-x86_64-1.txz" ]                && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/d/gcc-4.8.2-x86_64-1.txz
  [ ! -e "kernel-headers-3.10.17-x86-3.txz" ]      && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/d/kernel-headers-3.10.17-x86-3.txz
  [ ! -e "glibc-2.17-x86_64-7.txz" ]               && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/l/glibc-2.17-x86_64-7.txz
  [ ! -e "binutils-2.23.52.0.1-x86_64-2.txz" ]     && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/d/binutils-2.23.52.0.1-x86_64-2.txz
  [ ! -e "make-3.82-x86_64-4.txz" ]                && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/d/make-3.82-x86_64-4.txz
  [ ! -e "cxxlibs-6.0.18-x86_64-1.txz" ]           && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/a/cxxlibs-6.0.18-x86_64-1.txz
  [ ! -e "perl-5.18.1-x86_64-1.txz" ]              && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/d/perl-5.18.1-x86_64-1.txz
  [ ! -e "patch-2.7-x86_64-2.txz" ]                && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/a/patch-2.7-x86_64-2.txz
  [ ! -e "ncurses-5.9-x86_64-2.txz" ]              && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/l/ncurses-5.9-x86_64-2.txz
  [ ! -e "mpfr-3.1.2-x86_64-1.txz" ]               && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/l/mpfr-3.1.2-x86_64-1.txz
  [ ! -e "gcc-g++-4.8.2-x86_64-1.txz" ]            && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/d/gcc-g++-4.8.2-x86_64-1.txz
  [ ! -e "pkg-config-0.25-x86_64-1.txz" ]          && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/d/pkg-config-0.25-x86_64-1.txz
  [ ! -e "bc-1.06.95-x86_64-2.txz" ]               && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/ap/bc-1.06.95-x86_64-2.txz
  [ ! -e "cpio-2.11-x86_64-2.txz" ]                && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/a/cpio-2.11-x86_64-2.txz
  [ ! -e "libmpc-0.8.2-x86_64-2.txz" ]             && wget http://slackware.osuosl.org/slackware64-14.1/slackware64/l/libmpc-0.8.2-x86_64-2.txz
else
  echo "ERROR: Unsupported Slackware version"
  exit 1
fi

mkdir -p /var/log/setup/tmp
installpkg *.txz

[ ! -e "${KDIR}_original" ] && mv $KDIR ${KDIR}_original
[ -e "$KDIR" ] && rm -rf $KDIR
[ -e "/usr/src/linux-$KVER" ] && rm -rf /usr/src/linux-$KVER

echo "Decompressing Kernel Source..."
tar -C /usr/src/ -xJf $SDIR/packages/linux-$KVER.tar.xz
mv /usr/src/linux-$KVER $KDIR

[ -e "/usr/src/linux" ] && rm -rf /usr/src/linux
ln -sf $KDIR /usr/src/linux

cp -rf ${KDIR}_original/. /usr/src/linux/

if [ "$1" == 'make' ]; then
  cd /usr/src/linux && yes "" | make oldconfig && make
else
  echo -e '\n\n## cd /usr/src/linux && yes "" | make oldconfig && make menuconfig && make\n'
fi