#!/bin/bash
ulimit -s unlimited
shopt -s extglob

# boost.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter for Slackware ARM.
#
# Copyright 2007, 2008, 2012 Eric Hameleers, Eindhoven, NL
# Copyright 2007-2008, 2013, 2014, 2017 Heinz Wiesinger, Amsterdam, NL
# Copyright 2008, 2009, 2010, 2013, 2014, 2015, 2017  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 ''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.

# bjam-build system mostly taken from SlackBuild by Eric Hameleers
# Script modified by Robby Workman - no copyright claims or added terms
# Modified 2012 by Eric Hameleers <alien at slackware.com> for ARM port.

ICU=${ICU:-no}

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
slackset_var_cwds

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

PYTHON_VERSION=$(python2 -c 'import sys; print("{}.{}".format(sys.version_info.major, sys.version_info.minor))')
PYTHON3_VERSION=$(python3 -c 'import sys; print("{}.{}".format(sys.version_info.major, sys.version_info.minor))')

# Determine the CFLAGS for the known architectures:
case $ARCH in
   arm)
            export SLKARMFLAGS="--disable-long-double" ;;
esac

# Extract source:
echo "Extracting source.."
tar xf $CWD/boost_*.tar.!(*sign|*asc|*sig)
#tar xvvf $PORTCWD/sources/boost_$VERSION.tar.!(*sign|*asc|*sig)
cd boost*/ || exit 1
slackhousekeeping

# Apply patches:
# Avoid hardcoded /tmp/package-boost/ paths in the cmake files:
cat $CWD/boost-1.73.0-cmakedir.patch | patch -p1 --verbose || exit 1

zcat $CWD/0001-b2-fix-install.patch.gz | patch -p1 --verbose || exit 1

echo "************** PYTHON 2: Building bjam *********************"

# First build bjam, the boost build system:
#cd tools/build/src/engine
#  CFLAGS="$SLKCFLAGS -fno-strict-aliasing" CC=gcc ./build.sh cc
#cd -

./bootstrap.sh \
   --with-toolset=gcc \
   --with-icu \
   --with-python=/usr/bin/python2 || failconfig

echo "************** PYTHON 2: Building boost (using bjam) *********************"

./b2 \
   $NUMJOBS \
   --layout=system \
   --build-dir=build-python2 \
   --prefix=/usr \
   --libdir=/usr/lib$LIBDIRSUFFIX \
   --build-type=minimal \
   toolset=gcc \
   variant=release \
   debug-symbols=off \
   link=shared \
   threading=multi \
   runtime-link=shared \
   python=$PYTHON_VERSION \
   cflags="$SLKCFLAGS" \
   cxxflags="$SLKCFLAGS $EXTRA_CXXFLAGS" \
   stage # skip failure on ARM - we fail to update 1 target || failmake

echo "************** PYTHON 2: Installing Boost *********************"

./b2 \
   $NUMJOBS \
   --layout=system \
   --build-dir=build-python2 \
   --prefix=$PKG/usr \
   --libdir=$PKG/usr/lib$LIBDIRSUFFIX \
   --build-type=minimal \
   toolset=gcc \
   variant=release \
   debug-symbols=off \
   link=shared \
   threading=multi \
   runtime-link=shared \
   python=$PYTHON_VERSION \
   cflags="$SLKCFLAGS" \
   cxxflags="$SLKCFLAGS $EXTRA_CXXFLAGS" \
   install ## || failinstall   # skip failure - on ARM we fail on 1 target but update thousands of others. 

echo "************** PYTHON 3: Building bjam *********************"

#### Python3:
# one more run to build libboost_python3..
sed -e '/using python/ s@;@: /usr/include/python${PYTHON_VERSION/3*/${PYTHON_VERSION}} ;@' \
  -i bootstrap.sh


./bootstrap.sh \
   --with-toolset=gcc \
   --with-icu \
   --with-python=/usr/bin/python3 \
   --with-libraries=python || failconfig

echo "************** PYTHON 3: Building boost (using bjam) *********************"

./b2 \
   $NUMJOBS \
   --layout=system \
   --build-dir=build-python3 \
   --prefix=/usr \
   --libdir=/usr/lib$LIBDIRSUFFIX \
   --build-type=minimal \
   toolset=gcc \
   variant=release \
   debug-symbols=off \
   link=shared \
   threading=multi \
   runtime-link=shared \
   python=$PYTHON3_VERSION \
   cflags="$SLKCFLAGS" \
   cxxflags="$SLKCFLAGS $EXTRA_CXXFLAGS" \
   stage # | failmake

echo "************** PYTHON 3: Installing Boost *********************"

./b2 \
   $NUMJOBS \
   --layout=system \
   --build-dir=build-python3 \
   --prefix=$PKG/usr \
   --libdir=$PKG/usr/lib$LIBDIRSUFFIX \
   --build-type=minimal \
   toolset=gcc \
   variant=release \
   debug-symbols=off \
   link=shared \
   threading=multi \
   runtime-link=shared \
   python=$PYTHON3_VERSION \
   cflags="$SLKCFLAGS" \
   cxxflags="$SLKCFLAGS $EXTRA_CXXFLAGS" \
   install ## || failmake

# Copy documentation:
mkdir -p $PKG/usr/doc/$PKGNAM-$PKG_VERSION
# Do not copy 44MB of developer 'doc/html' into our package...
cp -fav \
   LICENSE* index.html \
   $PKG/usr/doc/$PKGNAM-$PKG_VERSION

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall   # strip all .a archives and all ELFs
slack_delete_lafiles # delete usr/lib{,64}/*.la
slackgzpages -i # compress man & info pages and delete usr/info/dir
slackslack      # chown -R root:root, chmod -R og-w, slackchown, slack644docs
slackdesc       # install slack-desc and doinst.sh

export VERSION="$( echo $VERSION | sed 's?_?.?g' )"
export SLACKPACKAGE=$PKGNAM-$VERSION-$PKGARCH-$BUILD.txz

slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links