Try this on for size as a concrete example. (The %{notation} is due to the RPM .spec file syntax -- adjust as required.) argv=( ${CMAKE:-cmake3} ) argv

Try this on for size as a concrete example. (The %{notation} is due to the RPM .spec file syntax -- adjust as required.) argv=( ${CMAKE:-cmake3} ) argv+=( -S %{cmake_source_dir} ) argv+=( -B %{cmake_build_dir} ) argv+=( -G Ninja ) argv+=( -D CMAKE_CXX_FLAGS='-march=native -flto' ) argv+=( -D CMAKE_INSTALL_PREFIX=%{install_home} ) argv+=( -D CMAKE_EXE_LINKER_FLAGS="-Wl,-rpath=%{openssl_root}/lib" ) argv+=( -D OPENSSL_ROOT_DIR=%{openssl_root} ) "${argv[@]}"