#!/bin/bash

## Written by halflife (vzdorovenco@yahoo.com)

## Feel free to use, modify, redistribute this script.
## If you make changes please modify the "Written by"
## so that I don't recieve emails about a script I
## did not write. Thanks.

# Modified by Robby Workman 20071027
# I won't change the "Written by" line, because I didn't
# change who wrote the script.  If there are questions as
# to whether my changes caused a problem, feel free to
# send mail to me first.

# Package adaptation in order to rename it from otp-R11B
# to erlang-otp, by LukenShiro <Lukenshiro@ngi.it>

# Modified by Ryan S. Northrup <northrup@yellowapple.us> on
# 28 November 2016 to reflect the use of README.md instead
# of README in upstream

PRGNAM=erlang-otp
VERSION=${VERSION:-23.2}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

SRC_NAME_VERSION=otp_src_${VERSION}
DOC_NAME_VERSION=otp_doc_man_${VERSION}

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

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=${PKG:-$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 $SRC_NAME_VERSION
tar xvf $CWD/${SRC_NAME_VERSION}.tar.gz
cd $SRC_NAME_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 {} \;

CFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --build=$ARCH-slackware-linux

INSTALL_DV="install: install.dirs install.emulator install.libs"
sed -i -e "s|$INSTALL_DV install.Install install.bin|$INSTALL_DV|" Makefile

make
make INSTALL_PREFIX=$PKG install

cd $PKG/usr/bin
  for file in erl erlc epmd run_erl to_erl dialyzer typer escript ; do
    rm -f $file
    ln -s ../lib${LIBDIRSUFFIX}/erlang/bin/$file .
  done
cd -

mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/erlang
tar xvf $CWD/$DOC_NAME_VERSION.tar.gz -C $PKG/usr/lib${LIBDIRSUFFIX}/erlang
chown -R root:root $PKG/usr/lib${LIBDIRSUFFIX}/erlang
chmod -R u+w,go+r-w,a-s $PKG/usr/lib${LIBDIRSUFFIX}/erlang

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
( cd $PKG/usr/lib${LIBDIRSUFFIX}/erlang
  mv COPYRIGHT README.md $PKG/usr/doc/$PRGNAM-$VERSION )
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mv $PKG/usr/lib${LIBDIRSUFFIX}/erlang/man $PKG/usr
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

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
sed "s%@LIBDIR@%/usr/lib${LIBDIRSUFFIX}%g" $CWD/doinst.sh > \
  $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n -p $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}