#!/bin/sh

# Slackware build script for mspgcc-legacy

# Copyright 2016 Renan C. A. Alves, Sao Paulo, Brazil
# 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.

PRGNAM=mspgcc-legacy
VERSION=${VERSION:-20120406}

MSPGCCVERSION=$VERSION
BINUTILSVERSIONFILE=2.21.1a
BINUTILSVERSION=2.21.1
GCCVERSION=4.6.4
GCCPATCHVERSION=4.6.3
MSP430MCUVERSION=20120406
MSP430LIBCVERSION=20120224

BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

PREFIX=${PREFIX:-/opt/$PRGNAM}

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=$TMP/package-$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 $TMP
rm -rf mspgcc-$MSPGCCVERSION

tar xvf $CWD/mspgcc-$MSPGCCVERSION.tar.bz2
tar xvf $CWD/binutils-$BINUTILSVERSIONFILE.tar.bz2  -C mspgcc-$MSPGCCVERSION
tar xvf $CWD/gcc-$GCCVERSION.tar.bz2                -C mspgcc-$MSPGCCVERSION
tar xvf $CWD/msp430mcu-$MSP430MCUVERSION.tar.bz2    -C mspgcc-$MSPGCCVERSION
tar xvf $CWD/msp430-libc-$MSP430LIBCVERSION.tar.bz2 -C mspgcc-$MSPGCCVERSION

cd mspgcc-$MSPGCCVERSION
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 {} \;

PATH=$PKG/$PREFIX/bin:$PATH

# Apply patch, configure, build and install binutils
(
  patch -p1 -d binutils-$BINUTILSVERSION < msp430-binutils-$BINUTILSVERSIONFILE-$MSPGCCVERSION.patch
  mkdir binutils-build
  cd binutils-build

  ../binutils-$BINUTILSVERSION/configure \
    --target=msp430 \
    --program-prefix="msp430-" \
    --prefix=$PREFIX

  # this avoids errors about compiling documentation
  echo "MAKEINFO = :" >> Makefile
  make CFLAGS="-Wno-error $SLKCFLAGS"
  make install DESTDIR=$PKG
)

# Apply patch, configure, build and install gcc
(
  patch -p1 -d gcc-$GCCVERSION < msp430-gcc-$GCCPATCHVERSION-$MSPGCCVERSION.patch
  mkdir gcc-build
  cd gcc-build

  ../gcc-$GCCVERSION/configure \
    --target=msp430 \
    --program-prefix="msp430-" \
    --prefix=$PREFIX \
    --enable-languages=c

  # this avoids errors about compiling the documentation
  echo "MAKEINFO = :" >> Makefile
  make CFLAGS="-Wno-error $SLKCFLAGS"
  make install DESTDIR=$PKG
)

# Install msp430mcu
(
  cd msp430mcu-$MSP430MCUVERSION
  export MSP430MCU_ROOT=$(pwd)
  # Install the msp430mcu files wherever you installed mspgcc
  scripts/install.sh $PKG/$PREFIX
  sed -i -e "s#$PKG/##g" $PKG/$PREFIX/bin/msp430mcu-config
)

# Configure and install msp430-libc
(
  cd msp430-libc-$MSP430LIBCVERSION
  ./configure \
    --prefix=$PREFIX
  cd src
  make CFLAGS="$SLKCFLAGS"
  make PREFIX=$PKG/$PREFIX install
)

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/man
mv $PKG/$PREFIX/share/man/man1 $PKG/usr/man
# we don't want the other manpages in $PREFIX/share/man/man7
rm -rf $PKG/$PREFIX/share/man
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/etc/profile.d
cp $CWD/$PRGNAM.sh  $PKG/etc/profile.d/
cp $CWD/$PRGNAM.csh $PKG/etc/profile.d/
chmod 0755 $PKG/etc/profile.d/*

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a README RELEASES.TXT $PKG/usr/doc/$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:-tgz}