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#!/bin/sh

# Slackware build script for XEmacs

# Created by Sean MacLennan <xemacs@seanm.ca>
# Modified by Robby Workman <rworkman@slackbuilds.org> for 
#   better consistency with existing SBo scripts...

PRGNAM=xemacs
VERSION=21.4.22
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

BASE_VERSION=2.27
EFS_VERSION=1.34

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 [ "$ARCH" = "i486" ]; then
    SLKCFLAGS="-O2 -march=i486 -mtune=i686"
    LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
    SLKCFLAGS="-O2 -march=i686 -mtune=i686"
    LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
    # XEmacs will not run compiled -fPIC
    SLKCFLAGS="-O2"
    LIBDIRSUFFIX="64"
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xf $CWD/$PRGNAM-$VERSION.tar.bz2
cd $PRGNAM-$VERSION
chown -R root.root .

# These patches allow building xemacs with xemacs installed
# dump-paths patch from Enrico Scholz
patch -p1 < $CWD/patches/dump-paths.patch || exit 1
patch -p1 < $CWD/patches/check-features.patch || exit 1

# XEmacs is hardcoded to look in lib
if [ "$ARCH" = "x86_64" ]; then
  patch -p1 < $CWD/patches/lib64.patch
fi

# Sighhhhhh.....
patch -p1 < $CWD/patches/mod-shift.patch

CFLAGS="$SLKCFLAGS" \
  ./configure \
  --prefix=/usr \
  --libdir=/usr/lib$LIBDIRSUFFIX \
  --datadir=/usr/lib${LIBDIRSUFFIX} \
  --with-sound=none \
  --with-file-coding \
  $ARCH-slackware-linux

make
make install \
  prefix=$PKG/usr \
  libdir=$PKG/usr/lib${LIBDIRSUFFIX} \
  datadir=$PKG/usr/lib${LIBDIRSUFFIX}

# Add minimal packages to allow package tools to work
mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/xemacs/xemacs-packages
tar xf $CWD/xemacs-base-$BASE_VERSION-pkg.tar.gz -C $PKG/usr/lib${LIBDIRSUFFIX}/xemacs/xemacs-packages
tar xf $CWD/efs-$EFS_VERSION-pkg.tar.gz -C $PKG/usr/lib${LIBDIRSUFFIX}/xemacs/xemacs-packages
# Make sure the .elc files are newer
find $PKG/usr/lib${LIBDIRSUFFIX}/xemacs/xemacs-packages -name \*.elc -exec touch {} \;

make datadir=$PKG/usr/lib${LIBDIRSUFFIX} gzip-el

# What is this 2.3M for?????
rm -rf $PKG/usr/lib$LIBDIRSUFFIX/xemacs-$VERSION/$ARCH-slackware-linux/include

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

gzip $PKG/usr/man/*/*

# gzip info stuff, but not the dir file
gzip -9 $PKG/usr/lib${LIBDIRSUFFIX}/xemacs-$VERSION/info/*
gzip -d $PKG/usr/lib${LIBDIRSUFFIX}/xemacs-$VERSION/info/dir.gz

# Fixup some conflicts with stock Slackware packages
for file in b2m ctags etags rcs-checkin ; do mv $PKG/usr/bin/$file{,-xemacs} ; done
for file in ctags etags ; do mv $PKG/usr/man/man1/$file{,-xemacs}.1.gz ; done

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  BUGS CHANGES-* COPYING ChangeLog Installation PROBLEMS README* \
  $PKG/usr/doc/$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

cat <<EOF >$PKG/install/doinst.sh
# Make sure the elc files are newer than the el files
touch usr/lib${LIBDIRSUFFIX}/xemacs-$VERSION/lisp/*.elc
touch usr/lib${LIBDIRSUFFIX}/xemacs-$VERSION/lisp/*/*.elc
touch usr/lib${LIBDIRSUFFIX}/xemacs/xemacs-packages/lisp/xemacs-base/*.elc
touch usr/lib${LIBDIRSUFFIX}/xemacs/xemacs-packages/lisp/efs/*.elc
EOF

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

# Clean up the extra stuff:
if [ "$1" = "--cleanup" ]; then
    rm -rf $TMP/$PRGNAM-${VERSION}
    rm -rf $PKG
fi