diff options
Diffstat (limited to 'cmake/modules/CheckCLinkerFlag.cmake')
| -rw-r--r-- | cmake/modules/CheckCLinkerFlag.cmake | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/cmake/modules/CheckCLinkerFlag.cmake b/cmake/modules/CheckCLinkerFlag.cmake index 4a07a8612e..f657a9b884 100644 --- a/cmake/modules/CheckCLinkerFlag.cmake +++ b/cmake/modules/CheckCLinkerFlag.cmake @@ -32,9 +32,19 @@ MACRO (CHECK_C_LINKER_FLAG _FLAG _RESULT) # With 3.2 and later, we could also set policy CMP0056 to NEW and # set CMAKE_EXE_LINKER_FLAGS. # - set(CMAKE_REQUIRED_LIBRARIES "${_FLAG}") - message(status "check linker flag - test linker flags: ${CMAKE_REQUIRED_LIBRARIES}") + set(save_CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}") + if(CMAKE_C_COMPILER_ID MATCHES "MSVC") + # + # This means the linker is presumably the Microsoft linker; + # we need to pass /WX in order to have the linker fail, + # rather than just complaining and driving on, if it's + # passed a flag it doesn't handle. + # + set(CMAKE_REQUIRED_LIBRARIES "/WX") + endif() + set(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES} ${_FLAG}") + message(status "check linker flag - test linker flags: ${_FLAG}") check_c_source_compiles("int main() { return 0;}" ${_RESULT}) - set(CMAKE_REQUIRED_LIBRARIES "") + set(CMAKE_REQUIRED_LIBRARIES "${save_CMAKE_REQUIRED_LIBRARIES}") ENDMACRO (CHECK_C_LINKER_FLAG) |