Improved build script to count physical cores on all NUMA nodes

   exit 0

fi

# get the number of physical cores present on the system, even with multiple NUMA nodes

# see https://unix.stackexchange.com/a/279354

SYSTEM_CORES=$(lscpu --all --parse=CORE,SOCKET | grep -Ev "^#" | sort -u | wc -l)

if [[ "$make" == "make" ]]; then

   if [[ -n ${BUILD_JOBS} ]]; then

      # override $MAKEFLAGS from parent environment

      export MAKEFLAGS=-j${BUILD_JOBS}

   elif [[ -z ${MAKEFLAGS} ]]; then

      # $BUILD_JOBS and $MAKEFLAGS are not set => set default value

      BUILD_JOBS=$(grep "core id" /proc/cpuinfo | sort -u | wc -l)

      BUILD_JOBS=$SYSTEM_CORES

      export MAKEFLAGS=-j${BUILD_JOBS}

   fi

else

   if [[ -z ${BUILD_JOBS} ]]; then

      BUILD_JOBS=$(grep "core id" /proc/cpuinfo | sort -u | wc -l)

      BUILD_JOBS=$SYSTEM_CORES

   fi

   make="$make -j$BUILD_JOBS"

fi