Changed .gitlab-ci.yml to respect $NINJAFLAGS set from the outer environment

before_script:

    - which g++

    - which cmake

    - which ninja

# Stages are useful only to enforce some ordering of the jobs. Every job is run

# in its own directory and only very few data can be shared between the jobs in

    script:

        # all cores including hyperthreading

#        - export NUM_CORES=$(grep "core id" /proc/cpuinfo | wc -l)

#       # all pyhsical cores

        # all pyhsical cores

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

        # ninja does not have -l

#        - export MAKEFLAGS="-l$(echo 1.5*$NUM_CORES | bc) -j$NUM_CORES"

        - export NINJAFLAGS="-j$NUM_CORES"

        # respect $NINJAFLAGS from the outer environment if it is set

        - if [[ ${NINJAFLAGS} == "" ]]; then

                export NINJAFLAGS="-j$NUM_CORES";

          fi

        - export CTEST_OUTPUT_ON_FAILURE=1

        - export CTEST_PARALLEL_LEVEL=4

        - mkdir -p "./builddir/$CI_JOB_NAME"

                -DWITH_TOOLS=${WITH_TOOLS}

                -DWITH_PYTHON=${WITH_PYTHON}

        # "install" implies the "all" target

#        - make install

#        - make test

        - ninja ${NINJAFLAGS} install

        - if [[ ${WITH_TESTS} == "yes" ]]; then

                ninja test;