#!/bin/bash

# Slackware build script for yosys

# Copyright 2022 William PC - Seattle, 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)

PRGNAM=yosys
SRCNAM=yosys-$PRGNAM
VERSION=${VERSION:-0.22}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

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 $SRCNAM-$VERSION
tar xvf $CWD/$SRCNAM-$VERSION.tar.gz
cd $SRCNAM-$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 {} \;


if [ "${CLANG:-no}" == "yes" ]; then
  echo "CONFIG := clang" > Makefile.conf
else
  echo "CONFIG := gcc" > Makefile.conf
fi

# disable ABC because uses git clone
echo "ENABLE_ABC := 0" >> Makefile.conf

if [ "${GHDL:-no}" == "yes" ]; then
  echo "ENABLE_GHDL := 1" >> Makefile.conf
  # fix lib path at 64-bit to find ghdl libs
  sed -i 's#(GHDL_PREFIX)/lib#&'${LIBDIRSUFFIX}'#' Makefile
fi

# enable yosys shared library
# make libyosys.so, can manually build the 
# lib but will not work with the installation rule for make
echo "ENABLE_LIBYOSYS := 1" >> Makefile.conf

if [ "${PROTOBUF:-no}" == "yes" ]; then
  echo "ENABLE_PROTOBUF := 1" >> Makefile.conf
fi

if [ "${PYTHON:-no}" == "yes" ]; then
  echo "ENABLE_PYOSYS := 1" >> Makefile.conf
fi

if [ "${ABCEXTERNAL:-no}" == "yes" ]; then
  echo "ENABLE_ABC := 1" >> Makefile.conf
  echo "ABCEXTERNAL := abc" >> Makefile.conf
fi

# fix lib installation directory
sed -i 's#$(PREFIX)/lib#$(PREFIX)/lib'${LIBDIRSUFFIX}'#' Makefile

# set prefix, otherwise has to be set twice
# make PREFIX=/usr for correctly find dependent libs/include (i.e for GHDL)
# make install PREFIX=/usr for installing at prefix /usr
echo "PREFIX := /usr" >> Makefile.conf

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
make

# not working, keep it for later
# appnotes, requires IEEEtrans.cls
# presentation, requries dot
# manual requires luximono.sty
#if [ "${MANUAL-no}" == "yes" ]; then
#  make manual
#fi

make install DESTDIR=$PKG

# installing examples
mkdir -p $PKG/usr/share/$PRGNAM-$VERSION
cp -a examples $PKG/usr/share/$PRGNAM-$VERSION


# Don't ship .la files:
rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  CHANGELOG CODEOWNERS COPYING Dockerfile README.md \
  $PKG/usr/doc/$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