cmake HAVE_WERROR_UNUSED_CMD_LINE_ARG examples

gnss-sdr/gnss-sdr src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/lib/CMakeLists.txt :60

check_cxx_compiler_flag("-Werror=unused-command-line-argument" HAVE_WERROR_UNUSED_CMD_LINE_ARG)