#!/bin/bash

# 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=${VERSION:-21.5.34}
SRCVER=21.5-b34
BUILD=${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 xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
chown -R root.root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

patch -p0 < $CWD/c11.patch

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

CFLAGS="$SLKCFLAGS" \
  ./configure \
  --prefix=/usr \
  --libdir=/usr/lib$LIBDIRSUFFIX \
  --datadir=/usr/lib${LIBDIRSUFFIX} \
  --with-sound=none \
  --with-jpeg \
  --with-png \
  --with-tiff \
  --with-x \
  --build=$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

mkdir -p $PKG/usr/man/man1
mv $PKG/usr/share/man/* $PKG/usr/man/man1/
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 -rf $PKG/usr/share/man

gzip -9 $PKG/usr/share/$PRGNAM-$SRCVER/info/*.info*

# Fixup some conflicts with stock Slackware packages
for file in b2m ctags etags ; 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 CHANGES-* COPYING ChangeLog INSTALL 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-$SRCVER/lisp/*.elc
touch usr/lib${LIBDIRSUFFIX}/xemacs-$SRCVER/lisp/*/*.elc
touch usr/lib${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}