#!/bin/sh
#
# Written by Jockey S. Kyd (jockey dot kyd at gmail dot com)
# Public domain
#

PRGNAM=mit-scheme
VERSION=9.0.1
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
  TARARCH="i386"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
  TARARCH="i386"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
  TARARCH="x86-64"
else
  printf "$ARCH is not supported.\n" 1>&2
  exit 1
fi

set -e
rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION-$TARARCH.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

cd src
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib$LIBDIRSUFFIX \
  --build=$ARCH-slackware-linux
make compile-microcode
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

mkdir -p $PKG/usr/man/man1
cp -a doc/scheme.1 $PKG/usr/man/man1/mit-scheme.1
find $PKG/usr/man -type f -exec gzip -9 {} \;

# take prebuilt info doc rather than build them by ourselves
mkdir -p $PKG/usr/info
tar xvf $CWD/$PRGNAM-$VERSION-doc-info.tar.gz
cp -a $PRGNAM-$VERSION/doc/*.info $PKG/usr/info
find $PKG/usr/info -type f -exec gzip -9 {} \;
rm -rf $PRGNAM-$VERSION

# ditto for html ones
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/html
tar xvf $CWD/$PRGNAM-$VERSION-doc-html.tar.gz
cp -a $PRGNAM-$VERSION/doc/* $PKG/usr/doc/$PRGNAM-$VERSION/html
rm -rf $PRGNAM-$VERSION

# ditto for pdf ones
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/pdf
tar xvf $CWD/$PRGNAM-$VERSION-doc-pdf.tar.gz
cp -a $PRGNAM-$VERSION/doc/* $PKG/usr/doc/$PRGNAM-$VERSION/pdf
rm -rf $PRGNAM-$VERSION

cp -a changelog.txt src/COPYING src/README.txt $PKG/usr/doc/$PRGNAM-$VERSION
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:-tgz}