#!/bin/sh
# Build GNU screen for Slackware 
# <volkerdi@slackware.com>

VERSION=${VERSION:-4.0.3}
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1_slack11.0}

if [ "$ARCH" = "i386" ]; then
  SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
elif [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2"
fi

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/package-screen
rm -rf $PKG
mkdir -p $PKG
cd $TMP
rm -rf screen-$VERSION
tar xjvf $CWD/screen-$VERSION.tar.bz2

cd screen-$VERSION || exit 1

chown -R root:root .
find . -perm 666 -exec chmod 644 {} \;
find . -perm 664 -exec chmod 644 {} \;
find . -perm 600 -exec chmod 644 {} \;
find . -perm 444 -exec chmod 644 {} \;
find . -perm 400 -exec chmod 644 {} \;
find . -perm 440 -exec chmod 644 {} \;
find . -perm 777 -exec chmod 755 {} \;
find . -perm 775 -exec chmod 755 {} \;
find . -perm 511 -exec chmod 755 {} \;
find . -perm 711 -exec chmod 755 {} \;
find . -perm 555 -exec chmod 755 {} \;

CFLAGS="$SLKCFLAGS" \
./configure --prefix=/usr \
  --with-sys-screenrc=/etc/screenrc \
  --with-pty-mode=0620 \
  --with-pty-group=5 \
  --enable-telnet \
  --disable-socket-dir \
  --enable-locale \
  --enable-colors256 \
  --enable-rxvt_osc \
  $ARCH-slackware-linux

# Substitutions:
perl -pi -e 's|.*#undef HAVE_BRAILLE.*|#define HAVE_BRAILLE 1|' config.h
perl -pi -e 's|/usr/local/etc/screenrc|/etc/screenrc|' etc/etcscreenrc doc/*
perl -pi -e 's|/local/etc/screenrc|/etc/screenrc|' doc/*

# Build screen:
make || exit 1
make install DESTDIR=$PKG || exit 1

# Prepare package:
( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)
# Sorry, pal.  Not around here.
chmod 755 $PKG/usr/bin/screen-$VERSION
mkdir -p $PKG/etc/skel
cat etc/etcscreenrc > $PKG/etc/screenrc.new
cat etc/screenrc > $PKG/etc/skel/.screenrc.new
rm -f $PKG/usr/info/dir
gzip -9 $PKG/usr/info/*
gzip -9 $PKG/usr/man/man1/*
mkdir -p $PKG/usr/doc/screen-$VERSION
chmod 644 doc/FAQ
cp -a COPYING ChangeLog INSTALL NEWS README TODO \
  doc/FAQ doc/README.DOTSCREEN \
  $PKG/usr/doc/screen-$VERSION
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat << EOF > $PKG/install/doinst.sh
#!/bin/sh
config() {
  NEW="\$1"
  OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
  # If there's no config file by that name, mv it over:
  if [ ! -r \$OLD ]; then
    mv \$NEW \$OLD
  elif [ "\$(cat \$OLD | md5sum)" = "\$(cat \$NEW | md5sum)" ]; then # toss the redundant copy
    rm \$NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}
config etc/screenrc.new
config etc/skel/.screenrc.new
# This is probably safer than leaving the hidden .new file...  maybe?
rm -f etc/skel/.screenrc.new
EOF

# Build package:
cd $PKG
makepkg -l y -c n $TMP/screen-$VERSION-$ARCH-$BUILD.tgz