#!/bin/sh

# Slackware build script for powerpc64-cross-compiler
# written by powtrix (@gmail.com)

PRGNAM=powerpc64-cross-compiler
BUILD=${BUILD:-1}
TAG=${TAG:-_pow}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/pow}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

GCCVER=4.7.2
BINVER=2.22
MPFRVER=3.1.1
GMPVER=5.0.5
MPCVER=1.0.1
VERSION=${GCCVER}_${BINVER}_${MPFRVER}_${GMPVER}_${MPCVER}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi
		
set -e

rm -rf $PKG
mkdir -p $PKG $OUTPUT
cd $TMP

rm -rf $PRGNAM-$VERSION
mkdir $PRGNAM-$VERSION
cd $PRGNAM-$VERSION

tar xvf $CWD/../src/binutils-$BINVER.tar.?z*
tar xvf $CWD/../src/mpfr-$MPFRVER.tar.?z*
tar xvf $CWD/../src/gmp-$GMPVER.tar.?z*
tar xvf $CWD/../src/mpc-$MPCVER.tar.?z*
tar xvf $CWD/../src/gcc-$GCCVER.tar.?z*
chown -R root:root .

find . \
 \( -perm 777 -o -perm 775 -o -perm 771 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \+ -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \+

mkdir binutils-build
cd binutils-build

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
../binutils-$BINVER/configure \
  --target=powerpc64-linux \
  --prefix=/opt/powerpc64-linux-gcc-$GCCVER \
  --mandir=/usr/man \
  --disable-werror \
  --enable-64-bit-bfd \
  --build=$ARCH-slackware-linux

make
make install DESTDIR=$PKG

# compiling gcc,mpfr, gmp and mpc
mkdir ../gcc-build
cd ../gcc-build
ln -s ../mpfr-$MPFRVER mpfr
ln -s ../gmp-$GMPVER gmp
ln -s ../mpc-$MPCVER mpc

PATH=$PATH:$PKG/opt/powerpc64-linux-gcc-$GCCVER/bin \
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
../gcc-$GCCVER/configure \
  --target=powerpc64-linux \
  --prefix=/opt/powerpc64-linux-gcc-$GCCVER \
  --mandir=/usr/man \
  --without-headers \
  --enable-languages=c \
  --disable-shared \
  --disable-threads \
  --disable-decimal-float \
  --disable-libmudflap \
  --disable-libssp \
  --disable-libgomp \
  --disable-libquadmath \
  --with-mpfr-include=$PWD/../gcc-$GCCVER/mpfr/src \
  --with-mpfr-lib=$PWD/mpfr/src/.libs \
  --build=$ARCH-slackware-linux

PATH=$PATH:$PKG/opt/powerpc64-linux-gcc-$GCCVER/bin \
make
PATH=$PATH:$PKG/opt/powerpc64-linux-gcc-$GCCVER/bin \
make install DESTDIR=$PKG
cd ..

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | \
 grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

rm -rf $PKG/usr/man/man7

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do
  ln -s $( readlink $i ).gz $i.gz ; rm $i
done

rm -f $PKG/opt/powerpc64-linux-gcc-$GCCVER/share/info/dir
gzip -9 $PKG/opt/powerpc64-linux-gcc-$GCCVER/share/info/*.info*

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/binutils-$BINVER
cp -a \
  binutils-$BINVER/{COPYING*,ChangeLog,MAINTAINERS,README*} \
  $PKG/usr/doc/$PRGNAM-$VERSION/binutils-$BINVER

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/gcc-$GCCVER
cp -a \
  gcc-$GCCVER/{ABOUT-NLS,COPYING*,ChangeLog*,INSTALL} \
  gcc-$GCCVER/{LAST_UPDATED,MAINTAINERS,NEWS,README} \
  $PKG/usr/doc/$PRGNAM-$VERSION/gcc-$GCCVER

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/gmp-$GMPVER
cp -a \
  gmp-$GMPVER/{AUTHORS,COPYING*,ChangeLog,INSTALL,NEWS,README,doc/*.html} \
  $PKG/usr/doc/$PRGNAM-$VERSION/gmp-$GMPVER

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/mpc-$MPCVER
cp -a \
  mpc-$MPCVER/{AUTHORS,COPYING.LIB,ChangeLog,INSTALL,NEWS,README,TODO} \
  $PKG/usr/doc/$PRGNAM-$VERSION/mpc-$MPCVER

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/mpfr-$MPFRVER
cp -a \
  mpfr-$MPFRVER/{AUTHORS,BUGS,COPYING*,ChangeLog,INSTALL,NEWS} \
  mpfr-$MPFRVER/{PATCHES,README,TODO,VERSION,doc/FAQ.html} \
  $PKG/usr/doc/$PRGNAM-$VERSION/mpfr-$MPFRVER

cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-txz}