set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_C_STANDARD_REQUIRED TRUE)
set(CMAKE_C_STANDARD 99)

set(CMAKE_C_FLAGS "-Wall -Wextra ${CMAKE_C_FLAGS}")
set(CMAKE_CXX_FLAGS "-Wall -Wextra ${CMAKE_CXX_FLAGS}")

if(NOT APPLE AND NOT EMSCRIPTEN)
    set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--no-undefined -Wl,--as-needed ${CMAKE_SHARED_LINKER_FLAGS}")
    set(CMAKE_MODULE_LINKER_FLAGS "-Wl,--no-undefined -Wl,--as-needed ${CMAKE_MODULE_LINKER_FLAGS}")
endif()

set(CMAKE_C_VISIBILITY_PRESET hidden)
set(CMAKE_CXX_VISIBILITY_PRESET hidden)
set(CMAKE_VISIBILITY_INLINES_HIDDEN On)

if (POLICY CMP0063)
    # No sane project should be affected by CMP0063, so suppress the warnings
    # generated by the above visibility settings in CMake >= 3.3
    cmake_policy(SET CMP0063 NEW)
endif()

if (POLICY CMP0067)
    # make check_cxx_source_compiles honors CMAKE_CXX_STANDARD
    cmake_policy(SET CMP0067 NEW)
endif()

if(ENABLE_COVERAGE)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lgcov")
endif()


# RPATH
list(FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES "${CMAKE_INSTALL_FULL_LIBDIR}" _isSystemPlatformLibDir)
list(FIND CMAKE_CXX_IMPLICIT_LINK_DIRECTORIES "${CMAKE_INSTALL_FULL_LIBDIR}" _isSystemCxxLibDir)
if("${_isSystemPlatformLibDir}" STREQUAL "-1" AND "${_isSystemCxxLibDir}" STREQUAL "-1")
    set(CMAKE_SKIP_BUILD_RPATH  FALSE)
    set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
    set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_FULL_LIBDIR}")
    set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
endif("${_isSystemPlatformLibDir}" STREQUAL "-1" AND "${_isSystemCxxLibDir}" STREQUAL "-1")