# passed a flag it doesn't handle.
#
set(CMAKE_REQUIRED_LIBRARIES "/WX")
+ elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
+ #
+ # We'll be running the linker through the compiler driver, so
+ # we may need to pass -Werror=unknown-warning-option to have it
+ # fail, rather than just complaining and driving on, if it's
+ # passed a flag it doesn't handle.
+ set(CMAKE_REQUIRED_LIBRARIES "-Werror=unknown-warning-option")
endif()
set(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES} ${_FLAG}")
message(status "check linker flag - test linker flags: ${_FLAG}")