setupLCG.sh

# User choice: choose a build mode (opt or dbg)
###lcg_mode=dbg
lcg_mode=opt

#-------------------------------------------------------------------------------
# Check that this setup script has been sourced
#-------------------------------------------------------------------------------

if [ "$BASH_SOURCE" = "$0" ]; then
  echo "ERROR! The setup script was not sourced?" > /dev/stderr
  exit 1
elif [ "$BASH_SOURCE" = "" ]; then
  echo "ERROR! The setup script was not sourced from bash?" > /dev/stderr
  return 1
fi

# Determine the path to this sourced script
topdir=`dirname ${BASH_SOURCE}`
topdir=`cd ${topdir}; pwd`

#-------------------------------------------------------------------------------
# Set up the build environment for BLUEFIN using LCG views
#-------------------------------------------------------------------------------

# Set up Boost and ROOT from LCG views on cvmfs
# Path to LCG view location on cvmfs
lcgviews=/cvmfs/sft.cern.ch/lcg/views
if [ ! -d ${lcgviews} ]; then
  echo "ERROR! Directory '${lcgviews}' does not exist"
  return 1
fi

# Check that the host architecture (LCG_arch) is supported
lcg_arch=$(make -f Makefile print-LCG_arch)
if [ "${lcg_arch}" != "x86_64" ]; then
  echo "ERROR! Unknown architecture '${lcg_arch}'"
  return 1
fi
CMAKE_CXX_FLAGS="-m64"

# Set up ninja and CMake just in case
# (On centos7 they are taken from the LCG views, but not on slc6)
export PATH=/cvmfs/sft.cern.ch/lcg/contrib/CMake/3.23.1/Linux-x86_64/bin:${PATH}
export PATH=/cvmfs/sft.cern.ch/lcg/contrib/ninja/1.10.0/Linux-x86_64:${PATH}

# Set CMAKE_BUILD_TYPE from the LCG build mode
if [ "${lcg_mode}" == "opt" ]; then
  LCG_mode=${lcg_mode}
  CMAKE_BUILD_TYPE=Release
elif [ "${lcg_mode}" == "dbg" ]; then
  LCG_mode=${lcg_mode}
  CMAKE_BUILD_TYPE=Debug
else
  echo "ERROR! Unknown build mode '${lcg_mode}'"
  return 1
fi
CMAKEFLAGS="-DCMAKE_BUILD_TYPE=$CMAKE_BUILD_TYPE $CMAKEFLAGS"

# Check that the host O/S (LCG_os) is supported
# Use a different LCG view depending on LCG_os
# Use a different compiler depending on LCG_os
lcg_os=$(make -f Makefile print-LCG_os)
if [ "${lcg_os}" == "slc6" ]; then
  lcg_compiler=gcc49
  lcg_system=${lcg_arch}-${lcg_os}-${lcg_compiler}-${LCG_mode}
  . ${lcgviews}/LCG_72a/${lcg_system}/setup.sh
elif [ "${lcg_os}" == "centos7" ]; then
  lcg_compiler=gcc10
  lcg_system=${lcg_arch}-${lcg_os}-${lcg_compiler}-${LCG_mode}
  . ${lcgviews}/LCG_101/${lcg_system}/setup.sh
else
  echo "ERROR! Unknown O/S ${lcg_os}"
  return 1
fi

# Set the build flags (C++ std) appropriate to each compiler in LCG views
if [[ ${lcg_compiler} == *gcc10* ]]; then
  CMAKE_CXX_FLAGS="-std=c++14 ${CMAKE_CXX_FLAGS}"
elif [[ ${lcg_compiler} == *gcc6* ]]; then
  CMAKE_CXX_FLAGS="-std=c++14 ${CMAKE_CXX_FLAGS}"
elif [[ ${lcg_compiler} == *gcc5* ]]; then
  CMAKE_CXX_FLAGS="-std=c++14 ${CMAKE_CXX_FLAGS}"
elif [[ ${lcg_compiler} == *gcc49* ]]; then
  CMAKE_CXX_FLAGS="-std=c++1y ${CMAKE_CXX_FLAGS}"
elif [[ ${lcg_compiler} == *gcc48* ]]; then
  CMAKE_CXX_FLAGS="-std=c++11 ${CMAKE_CXX_FLAGS}"
else
  echo "ERROR! Unknown compiler ${lcg_compiler}"
  return 1
fi
CMAKEFLAGS="-DCMAKE_CXX_FLAGS='$CMAKE_CXX_FLAGS' $CMAKEFLAGS"

# Additional settings for Makefile and ninja verbosity
VERBOSE=1
CMAKEFLAGS="-DCMAKE_VERBOSE_MAKEFILE=ON $CMAKEFLAGS"

# Use ninja by default, if it exists, in the build rules generated by CMake
if ninja --version > /dev/null 2>&1; then 
  CMAKEFLAGS="-GNinja $CMAKEFLAGS"
fi

# Export the additional variables relevant for the cmake build of BLUEFIN
export CMAKEFLAGS
export LCG_mode
export VERBOSE