#!/bin/bash

# Copyright 2008, 2009, 2010, 2013, 2018, 2019, 2020  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.

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

PKGNAM=epic5
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.xz | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
EPICVER=5
HELPFILE=current
BUILD=${BUILD:-2}

## Default to no Ruby support, since it seems that ruby-2.7.0 is not compatible.
## Patches to fix this are welcome, otherwise we'll keep an eye on upstream.
## NOTE: Commenting this out since ruby-2.7.1 is working.
#RUBY_OPTION=${RUBY_OPTION:---without-ruby}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( 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 "${PRINT_PACKAGE_NAME}" ]; then
  echo "epic${EPICVER}-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

TMP=${TMP:-/tmp}
PKG=$TMP/package-epic${EPICVER}

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf epic${EPICVER}-$VERSION
tar xvf $CWD/epic${EPICVER}-$VERSION.tar.xz || exit 1
cd epic${EPICVER}-$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 {} \+

# Tcl support seems to have been removed in 2.1.9:
# --with-tcl=/usr/lib${LIBDIRSUFFIX}/tclConfig.sh

CFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --mandir=/usr/man \
  $RUBY_OPTION \
  --build=$ARCH-slackware-linux || exit 1

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

( cd $PKG/usr/share/epic${EPICVER}
  tar xvf $CWD/epic-help-${HELPFILE}.tar.?z* || exit 1
  chown -R root:root .
) || exit 1

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

mkdir -p $PKG/usr/doc/epic${EPICVER}-$VERSION
cp -a \
  BUG_FORM COPYRIGHT INSTALL KNOWNBUGS README* UPDATES VOTES doc \
  $PKG/usr/doc/epic${EPICVER}-$VERSION
rm -f $PKG/usr/doc/epic${EPICVER}-$VERSION/doc/*.1

# This is way too much.  See the source if you care.
if [ -r UPDATES ]; then
  DOCSDIR=$(echo $PKG/usr/doc/*-$VERSION)
  cat UPDATES | head -n 1000 > $DOCSDIR/UPDATES
  touch -r UPDATES $DOCSDIR/UPDATES
fi

gzip -9 $PKG/usr/man/man?/*.?

# These extra directories are fixed in this release, but it 
# doesn't hurt to leave this code just in case...
( cd $PKG && find . -name CVS -type d -exec rm -rf {} \+ )

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/epic${EPICVER}-$VERSION-$ARCH-$BUILD.txz