How does one include additional headers in an F' unit test?

[JackNWhite]

Note: Please note that the full answer is in the comments for the marked post

I have inspected the CMake functions, but I confess CMake is completely baffling to me.

I am able to add include paths to my main build with:

target_include_directories(${MODULE_NAME}
    ...
    )

But I cannot work out the target name for the unit tests. I tried adding _UT to the end, but got this error:

CMake Error at CMakeLists.txt:48 (target_include_directories):
  Cannot specify include directories for target
  "Something_UT" which is not built by this project.

What is the correct procedure?

[LeStarch]

@JackNWhite I think you need to try _ut_exe e.g.

target_include_dicrectories(${MODULE_NAME}_ut_exe <some directory>)

[JackNWhite]

I've found that I'm able to build if instead of using target_include_dicrectories I just used include_dicrectories, but I'm unsure of whether that makes my test macros (what I'm trying to include) available to normal sources.

[LeStarch]

It would make them available to normal sources. include_directories affects everything after that point. Just to clarify, when working with targets created by F´, you should be performing calls after the appropriate register call:

get_module_name("${CMAKE_CURRENT_LIST_DIR}")
register_fprime_ut()
target_include_directories("${MODULE_NAME}_ut_exe")

[JackNWhite]

Thanks for the help with this. Alas, if I add target_include_directories("${MODULE_NAME}_ut_exe"), I am unable to generate a normal build, with CMake saying:

-- Configuring incomplete, errors occurred!
  Cannot specify include directories for target
See also ".../build-fprime-automatic-native/CMakeFiles/CMakeOutput.log".
  "Something_ut_exe" which is not built by this project.

[LeStarch]

That one is on me. I forgot to give you the complete construct. In F´ and CMake generally, the variable BUILD_TESTING is used to turn on and off testing. In our case, we don't create UT targets unless that is set. The following will add include directories only in the case that we are testing

register_fprime_module()
....
register_fprime_ut()
....
get_module_name("${CMAKE_CURRENT_LIST_DIR}")
if (BUILD_TESTING)
    target_include_directories("${MODULE_NAME}_ut_exe")
endif()

[JackNWhite]

Sage wisdom! Thank you!