#!/bin/sh -x

# Copyright 2008, 2009  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Slackware build script for emacs-trunk

# Written by Dušan Stefanović (stefanovic.dusan@gmail.com)
# Modified by Robby Workman <rworkman@slackbuilds.org>
# Modified by Patrick Volkerding <volkerdi@slackware.com>
# Modified by Gwenhael Le Moine <gwenhael.le.moine@gmail.com>

ONLY_X11=${ONLY_X11:=NO}

PRGNAM=emacs
BRANCH=${BRANCH:=trunk}
VERSION=${VERSION:-${BRANCH}_$(date +"%Y.%m.%d_%H.%M")}
ARCH=${ARCH:-$(uname -m)}
NUMJOBS=${NUMJOBS:-" -j3 "}
BUILD=${BUILD:-1}


if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
fi

CWD=$(pwd)
TAG=cyco
OUTPUT=/tmp
TMP=${TMP:-/tmp/$TAG}
PKG=$TMP/pkg-$PRGNAM
REPOSITORIES=/home/cycojesus/projets/packages/repositories/

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf $PRGNAM-$VERSION

if [ ! -e $CWD/$PRGNAM-$VERSION.tar.?z* ] ; then
    if [ ! -e $REPOSITORIES/$PRGNAM/$BRANCH ] ; then
        mkdir -p $REPOSITORIES/$PRGNAM
        ( cd $REPOSITORIES/$PRGNAM
            bzr branch --stacked http://bzr.savannah.gnu.org/r/emacs/$BRANCH $BRANCH
        )
    fi

    ( cd $REPOSITORIES/$PRGNAM/$BRANCH
       [ -e Makefile ] && make distclean
       bzr pull
    )
    mkdir -p $TMP/$PRGNAM-$VERSION
    SRCDIR=$REPOSITORIES/$PRGNAM/$BRANCH
else
    tar xvf $CWD/$PRGNAM-$VERSION.tar.?z* || exit 1
    SRCDIR=.
fi

cd $PRGNAM-$VERSION || exit 1
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 {} \;

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
$SRCDIR/configure \
  --prefix=/usr \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --program-prefix="" \
  --program-suffix="" \
  --mandir=/usr/man \
  --infodir=/usr/info \
  --with-x \
  --with-x-toolkit=gtk \
  --without-gconf \
  --build=${ARCH}-slackware-linux

make bootstrap

make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1

EMACS_VERSION=$(echo "$(basename $(ls $PKG/usr/bin/emacs-2*))" | grep -o "[0-9\.]*")
( cd $PKG/usr/bin
    rm emacs
    mv emacs-${EMACS_VERSION} emacs-${EMACS_VERSION}-with-x11
    cat <<EOF > $PKG/usr/bin/emacs
#!/bin/sh

XMODIFIERS= GTK_IM_MODULE= QT_IM_MODULE= /usr/bin/emacs-${EMACS_VERSION}-with-x11 "\$@"
EOF
    chmod +x $PKG/usr/bin/emacs
)

if [ ! "x$ONLY_X11" == "xYES" ] ; then
# Also add a version of the binary that is not linked to X11:
    cd $TMP
    rm -rf $PRGNAM-$VERSION
    if [ ! -e $CWD/$PRGNAM-$VERSION.tar.?z* ] ; then
        [ -e $TMP/$PRGNAM-$VERSION ] && rm -fr $TMP/$PRGNAM-$VERSION
        mkdir -p $TMP/$PRGNAM-$VERSION
        SRCDIR=$REPOSITORIES/$PRGNAM/$BRANCH
    else
        tar xvf $CWD/$PRGNAM-$VERSION.tar.?z* || exit 1
        SRCDIR=.
    fi

    cd $PRGNAM-$VERSION || exit 1
    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 {} \;

    CFLAGS="$SLKCFLAGS" \
    CXXFLAGS="$SLKCFLAGS" \
    $SRCDIR/configure \
        --prefix=/usr \
        --sysconfdir=/etc \
        --localstatedir=/var \
        --program-prefix="" \
        --program-suffix="" \
        --mandir=/usr/man \
        --infodir=/usr/info \
        --with-x=no \
        --without-gconf \
        --build=${ARCH}-slackware-linux
    
    make $NUMJOBS || make || exit 1

    # Install the non-x version:
    cat src/emacs > $PKG/usr/bin/emacs-${EMACS_VERSION}-no-x11
    chown root:root $PKG/usr/bin/emacs-${EMACS_VERSION}-no-x11
    chmod 1755 $PKG/usr/bin/emacs-${EMACS_VERSION}-no-x11
fi

# I don't care for broken permissions.
chmod 755 $PKG/var/games/emacs
chown -R games:root $PKG/var/games/emacs

# This avoids a collision with Exuberant Ctags...
mv $PKG/usr/bin/ctags $PKG/usr/bin/ctags-emacs
mv $PKG/usr/man/man1/ctags.1 $PKG/usr/man/man1/ctags-emacs.1

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

rm $PKG/usr/info/dir*

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  AUTHORS COPYING* ChangeLog INSTALL README \
  $PKG/usr/doc/$PRGNAM-$VERSION

mkdir -p $PKG/install
cat <<EOF > $PKG/install/slack-desc
     |-----handy-ruler------------------------------------------------------|
emacs: emacs (GNU Emacs)
emacs:
emacs: Emacs is the extensible, customizable, self-documenting real-time
emacs: display editor. If this seems to be a bit of a mouthful, an
emacs: easier explanation is that Emacs is a text editor and more. At
emacs: its core is an interpreter for Emacs Lisp, a dialect of the Lisp
emacs: programming language with extensions to support text editing.
emacs: This version supports X.
emacs:
emacs: http://www.gnu.org/software/emacs/
emacs:
EOF

cat <<EOF > $PKG/install/doinst.sh
# Vim ships a better (IMHO) version of ctags, and we don't want
# to overwrite it with this one.  If you really want emacs' ctags
# either copy or link it into place yourself, or remove the vim
# packages and reinstall emacs.  Besides, does anyone know/use
# *both* emacs and vi?  I'd think that would bring the universe
# to an end.  ;-)
if [ ! -e usr/bin/ctags ]; then
  cp -a usr/bin/ctags-emacs usr/bin/ctags
  cp -a usr/man/man1/ctags-emacs.1.gz usr/man/man1/ctags.1.gz
fi
EOF

# Make the .desktop file
mkdir -p $PKG/usr/share/applications
cat << "EOF" > $PKG/usr/share/applications/$PRGNAM.desktop
[Desktop Entry]
Encoding=UTF-8
Type=Application
Exec=emacs
Icon=emacs.png
Terminal=0
Name=Emacs
Comment=Text Editor
Categories=Application;Development;
EOF

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