include_guard(GLOBAL)

add_library(_ecal_warnings INTERFACE)

set(cxx_compiler_flags "")

if("${CMAKE_CXX_COMPILER_ID}" MATCHES "MSVC")
  message(STATUS "MSVC detected - Adding flags")
  set(cxx_compiler_flags "/MP" "/W4")
elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU|Clang")
  message(STATUS "Setting GNU/Clang flags")
  set(cxx_compiler_flags "-Wall" "-Wextra")
else()
  message(WARNING "Unknown compiler, will not set warning flags")
endif()

target_compile_options(_ecal_warnings INTERFACE
  "$<$<COMPILE_LANGUAGE:C,CXX>:${cxx_compiler_flags}>"
)

unset(cxx_compiler_flags)

function(ecal_add_compiler_warnings TARGET_NAME)
  target_link_libraries("${TARGET_NAME}" PRIVATE
    "$<BUILD_INTERFACE:_ecal_warnings>"
  )
endfunction()