How to get macOS/iOS framework root directory at install time?

Code
1

Hi,

Let’s have a cross-platform command-line test application TestApp. This app depends on OpenCV, built as a dynamic framework on Apple. To install the app and runtime dependencies, I have:

install(TARGETS TestApp
        RUNTIME_DEPENDENCY_SET TestAppDeps
        DESTINATION "$<TARGET_FILE_DIR:TestApp>"
)

install(IMPORTED_RUNTIME_ARTIFACTS
        RUNTIME_DEPENDENCY_SET TestAppDeps
        DESTINATION "$<TARGET_FILE_DIR:TestApp>"
)

install(RUNTIME_DEPENDENCY_SET TestAppDeps
        DESTINATION "$<TARGET_FILE_DIR:TestApp>"
        PRE_EXCLUDE_REGEXES
                [=[api-ms-]=]
                [=[ext-ms-]=]
        POST_EXCLUDE_REGEXES
                [=[.*(\\|/)system32(\\|/).*\.dll]=]
                [=[^/(lib|usr/lib|usr/local/lib)]=]
                "$<TARGET_FILE_DIR:TestApp>"
        DIRECTORIES
                "$<TARGET_FILE_DIR:opencv_core>"
)

When running cmake install, I’m getting the following error:

CMake Error at TestApp/cmake_install.cmake:140 (file):
  file Could not resolve runtime dependencies:

    @rpath/opencv2.framework/Versions/4.0.1/opencv2

Looking at TestApp/cmake_install.cmake, I can see that the opencv_core target directory is obviously “too deep” into the opencv2.framework directory structure:

  elseif(CMAKE_INSTALL_CONFIG_NAME MATCHES "^([Rr][Ee][Ll][Ee][Aa][Ss][Ee])$")
    file(GET_RUNTIME_DEPENDENCIES 
      RESOLVED_DEPENDENCIES_VAR _CMAKE_DEPS
      EXECUTABLES
        "/Users/<user>/Documents/TestApp/build_arm64_osx/TestApp/Release/TestApp"
      DIRECTORIES
        "/Users/<user>/Documents/Dependencies/macOS/arm64/OpenCV_4.0.1/lib/3rdparty/opencv2.framework/Versions/4.0.1"
      PRE_EXCLUDE_REGEXES
        "api-ms-"
        "ext-ms-"
      POST_EXCLUDE_REGEXES
        ".*(\\\\|/)system32(\\\\|/).*\\.dll"
        "^/(lib|usr/lib|usr/local/lib)"
        "/Users/<user>/Documents/TestApp/build_arm64_osx/TestApp/Release"
      )

Is there a target or framework property, defining the root path of the framework, that I should use to give the DIRECTORIES argument the correct search path? In the above example, it should be two levels upper, i.e. omitting the Versions/4.0.1 part of the path.

Thanks.