#!/usr/bin/env bash

#
# (c) Copyright 2016 Hewlett Packard Enterprise Development LP
# 
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version. This program is
# distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details. You should have received a copy of the GNU Lesser
# General Public License along with this program. If not, see
# <http://www.gnu.org/licenses/>.
#

logfile="build_log.txt"
if [ -f "$logfile" ]; then
    rm $logfile
fi
srcfile="src/Instrumentation/NvmInstrumenter.cpp"
if [ "${1,,}" == "help" ];then
    echo "Run with $0 to build NvmInstrumenter.so - the compiler plugin for building Atlas programs. Build commands are set to timeout after 5 minutes."
    exit 0
fi
if [ ! -f "$srcfile" ]; then
    echo "Could not find plugin source file NvmInstrumenter.cpp - are you running from within Atlas/compiler-plugin?"
    exit 1
fi
clangpppath=$(which clang++; reval="$?")
if [ "$?" -ne 0 ]; then
    echo "Could not find a copy of clang++, is it installed or added to PATH?"
    exit 1
else
    echo "Found clang++ in $clangpppath"
fi
llvmconfigpath=$(which llvm-config; reval="$?")
if [ "$?" -ne 0 ]; then
    echo "Could not find llvm-config, is it installed or added to PATH?"
    exit 1
else
    echo "Found llvm-config in $llvmconfigpath"
fi
echo "Compiling object files" | tee $logfile
timeout 300s clang++ -g3 -fPIC -c $srcfile `llvm-config --cxxflags` >> $logfile 2>&1
retval="$?"
if [ "$retval" == "124" ]; then
    echo "Compilation took longer than 5 minutes - have you got conflicting versions of llvmretval Try building with the linked script."
    exit 1
elif [ "$retval" -ne 0 ]; then
    echo "Build shared lib failed on compilation, check $logfile"
    exit 1
else
    echo "Compilation successful"
fi
echo "Linking" | tee $logfile
timeout 300s clang++ -g3 -fPIC -shared NvmInstrumenter.o -o NvmInstrumenter.so >> $logfile 2>&1
retval="$?"
if [ "$retval" == "124" ]; then
    echo "Linking took lnvm_memcpyonger than 5 minutes - have you got conflicting versions of llvmretval Try building with the linked script."
    exit 1
elif [ "$retval" -ne 0 ]; then
    echo "Build shared lib failed on linking, check $logfile"
    exit 1
else
    echo "Linking successful"
fi
rm NvmInstrumenter.o
if [ -f "NvmInstrumenter.so" ]; then
    echo "Successfully built compiler plugin NvmInstrumenter.so"
    rm $logfile
fi
if [ ! -d "plugin_build" ]; then
    mkdir plugin_build
fi
mv NvmInstrumenter.so plugin_build/
echo "NvmInstrumenter.so is under plugin_build/"