#!/bin/bash

# Slackware build script for mmv

# Written by B. Watson (yalhcru@gmail.com)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# This is ancient software (1.01b was released in 1990), but still
# useful. We're treating Debian as upstream here, our version number
# matches their patchlevel (with _ intead of -).

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=mmv
VERSION=${VERSION:-1.01b_19}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

SRCVER="$( echo $VERSION | cut -d_ -f1 )"
DEBVER="$( echo $VERSION | cut -d_ -f2 )"

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

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

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$SRCVER.orig
tar xvf $CWD/${PRGNAM}_$SRCVER.orig.tar.gz
cd $PRGNAM-$SRCVER.orig
tar xvf $CWD/${PRGNAM}_$SRCVER-$DEBVER.debian.tar.xz
chown -R root:root .
find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
        \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+

# apply all Debian's patches:
for i in $( cat debian/patches/series ); do
  patch -p1 < debian/patches/$i
done

# one patch of our own:
patch -p1 < $CWD/compilefix.diff

# the default LDFLAGS cause the build to fail, override with "nothing".
sed -i "s,-O2,$SLKCFLAGS -Wall," Makefile
make LDFLAGS=

# easier to do this manually (only 2 files):
mkdir -p $PKG/usr/bin $PKG/usr/man/man1
install -s -m0755 $PRGNAM $PKG/usr/bin
gzip -9c < $PRGNAM.1 > $PKG/usr/man/man1/$PRGNAM.1.gz

# multi-named executable, uses its name to decide what action to take.
LINKS="mcp mad mln"
for i in $LINKS; do
  ln -s $PRGNAM $PKG/usr/bin/$i
  ln -s $PRGNAM.1.gz $PKG/usr/man/man1/$i.1.gz
done

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a ANNOUNCE READ.ME ARTICLE debian/changelog $PKG/usr/doc/$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