SetDefaultCompileFlags.cmake

# Set up the default flags and CMake build type once during the configuration
# of the top-level CMake project.

if ( MSVC )
  return()
endif ()

if ("${PROJECT_SOURCE_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")
    set(EXTRA_COMPILE_FLAGS     "-Wall -Wno-unused")
    set(EXTRA_COMPILE_FLAGS_CXX "-Wno-register -Werror=vla")

    if ( NOT CMAKE_BUILD_TYPE )
        if ( ENABLE_DEBUG )
            set(CMAKE_BUILD_TYPE Debug)
        else ()
            set(CMAKE_BUILD_TYPE RelWithDebInfo)
        endif ()
    endif ()

    string(TOUPPER ${CMAKE_BUILD_TYPE} _build_type_upper)

    if ( "${_build_type_upper}" STREQUAL "DEBUG" )
        if ( ENABLE_COVERAGE )
            set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} --coverage")
            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --coverage")
        endif()
        # manual add of -g works around its omission in FreeBSD's CMake port
        set(EXTRA_COMPILE_FLAGS "${EXTRA_COMPILE_FLAGS} -g -DDEBUG -DBRO_DEBUG")
    endif ()

    # Compiler flags may already exist in CMake cache (e.g. when specifying
    # CFLAGS environment variable before running cmake for the the first time)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_COMPILE_FLAGS}")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${EXTRA_COMPILE_FLAGS} ${EXTRA_COMPILE_FLAGS_CXX}")
endif ()