#!/usr/bin/env bash

# Copyright (c) 2017, University of Kaiserslautern
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its
#    contributors may be used to endorse or promote products derived from
#    this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "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 COPYRIGHT HOLDER
# OR CONTRIBUTORS 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.
#
# Author: Éder F. Zulian

dest=$HOME
sysc=systemc-2.3.1a
sysctarball=$sysc.tar.gz
builddir=objdir

function getnumprocs {
	local __retvar=$1;
	local __nprocs=$(cat /proc/cpuinfo | grep processor | wc -l)
	if [[ "$__retvar" ]]; then
		eval $__retvar="'$__nprocs'"
	else
		echo "$__nprocs"
	fi
}

# Get the code
cd $dest
wget -nc http://accellera.org/images/downloads/standards/systemc/$sysctarball
tar -xaf $sysctarball
rm $sysctarball

# Create a git repo to keep track of local changes
cd $sysc
git init
git add .
git commit -m "Adding files to repository"

# Build the library
mkdir $builddir
cd $builddir

# Patch needed for building systemc-2.3.1a
if [[ $sysc == 'systemc-2.3.1a' ]]; then
	printf "Patching $sysc\n"
	sedfile="../src/systemc.h"
	sed -i "s@using\ std::gets;@//using\ std::gets;@g" $sedfile
fi

export SYSTEMC_HOME=$dest/$sysc
../configure $cfgopts
getnumprocs np
nj=`expr $np - 1`
make -j$nj
make check -j$nj
make install

# Add env. variables to ~/.bashrc
arch=$(uname -m | sed 's/x86_//;s/i[3-6]86/32/')
echo "# SystemC home" >> ~/.bashrc
echo "export SYSTEMC_HOME=$dest/$sysc" >> ~/.bashrc
echo "# SystemC target architecture" >> ~/.bashrc
echo "export SYSTEMC_TARGET_ARCH=linux$arch" >> ~/.bashrc
echo "export LD_LIBRARY_PATH=\${LD_LIBRARY_PATH}:\${SYSTEMC_HOME}/lib-linux$arch" >> ~/.bashrc
echo "Done."