Problem with adding executable to macOS bundle

[Perdrix]

I have an executable on macOS that's built externally to my projects (uchmviewer).

When I get to the post-build stage in CMake, I copy the executable into my .app bundle. Which is OK, and I can run the built code just fine including the invocation of that executable.

However the installation of the bundle doesn't do all that's needed to the added executable so, when I try to run it from the installed and signed bundle I get:

Last login: Mon Jun  9 03:45:59 on ttys000
/Users/amonra/build/Darwin/arm64/Debug/DeepSkyStacker.app/Contents/MacOS/uchmviewer ; exit;
amonra@Saturn ~ % /Users/amonra/build/Darwin/arm64/Debug/DeepSkyStacker.app/Contents/MacOS/uchmviewer ; exit;
dyld[14425]: Library not loaded: @rpath/QtXml.framework/Versions/A/QtXml
  Referenced from: <3BF2E20B-AF0D-3DDA-BB86-17F4A0C1DC34> /Users/amonra/build/Darwin/arm64/Debug/DeepSkyStacker.app/Contents/MacOS/uchmviewer
  Reason: tried: '/opt/Qt/6.9.0/macos/lib/QtXml.framework/Versions/A/QtXml' (code signature in <FA6FE8B6-96D4-3274-8275-554B7D9A5BB0> '/opt/Qt/6.9.0/macos/lib/QtXml.framework/Versions/A/QtXml' not valid for use in process: mapping process and mapped file (non-platform) have different Team IDs), '/System/Volumes/Preboot/Cryptexes/OS/opt/Qt/6.9.0/macos/lib/QtXml.framework/Versions/A/QtXml' (no such file), '/usr/local/lib/QtXml.framework/Versions/A/QtXml' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/usr/local/lib/QtXml.framework/Versions/A/QtXml' (no such file), '/opt/Qt/6.9.0/macos/lib/QtXml.framework/Versions/A/QtXml' (code signature in <FA6FE8B6-96D4-3274-8275-554B7D9A5BB0> '/opt/Qt/6.9.0/macos/lib/QtXml.framework/Versions/A/QtXml' not valid for use in process: mapping process and mapped file (non-platform) have different Team IDs), '/System/Volumes/Preboot/Cryptexes/OS/opt/Qt/6.9.0/macos/lib/QtXml.framework/Versions/A/QtXml' (no such file), '/usr/local/lib/QtXml.framework/Versions/A/QtXml' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/usr/local/lib/QtXml.framework/Versions/A/QtXml' (no such file)
zsh: abort      

Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[Process completed]

How can I get the install step in my CMake file to process this in the same way as the executables I build (so that it's rpath is adjusted and all necessary dylibs are added to the bundle)?

Here's what I have in my CMakeLists.txt file:

if(APPLE)
    set_target_properties(DeepSkyStacker PROPERTIES
        MACOSX_BUNDLE ON
        MACOSX_BUNDLE_BUNDLE_NAME "DeepSkyStacker"
        MACOSX_BUNDLE_ICON_FILE "DeepSkyStacker.icns"
        MACOSX_BUNDLE_GUI_IDENTIFIER "com.github.deepskystacker.deepskystacker"
        MACOSX_BUNDLE_COPYRIGHT "Copyright © 2018-2025, David C. Partridge; Copyright © 2006-2019, Luc Coiffier"
		MACOSX_BUNDLE_INFO_PLIST "${CMAKE_CURRENT_SOURCE_DIR}/MacOSXBundleInfo.plist.in"
        INSTALL_RPATH "@executable_path/../Frameworks"
)
endif()

if(APPLE)
    add_custom_command(TARGET DeepSkyStacker
        POST_BUILD
        #
        # Now we've built the DSS .app bundle, copy the DSSCL binary into the bundle
        # The use of $<TARGET_FILE:DeepSkyStackerCL> in add_custom_command also adds
        # a dependency on the target, so that the DSSCL binary is built before this.
        #
        COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:DeepSkyStackerCL> $<TARGET_BUNDLE_CONTENT_DIR:DeepSkyStacker>/MacOS/
    	COMMAND ${CMAKE_COMMAND} -E copy -t $<TARGET_BUNDLE_CONTENT_DIR:DeepSkyStacker>/MacOS/ $ENV{HOME}/Downloads/uChmViewer/build/src/uchmviewer
    	COMMAND ${CMAKE_COMMAND} -E copy -t $<TARGET_BUNDLE_CONTENT_DIR:DeepSkyStacker>/Resources ${Help_Files}
        COMMAND "$ENV{HOME}/.unlock_keychain"
    )
endif()

if(NOT LINUX)
    set (deploy_tool_options_arg "-verbose=1")
    if(APPLE)
        set(deploy_tool_options_arg "${deploy_tool_options_arg} -hardened-runtime -timestamp -no-strip")
        set(deploy_tool_options_arg "${deploy_tool_options_arg} \"-executable=$<TARGET_BUNDLE_CONTENT_DIR:DeepSkyStacker>/MacOS/DeepSkyStackerCL\"")
        set(deploy_tool_options_arg "${deploy_tool_options_arg} \"-codesign=Developer ID Application: David Partridge (VH8AYT3C7Y)\"")
    elseif(WIN32)
        set(deploy_tool_options_arg "${deploy_tool_options_arg} --pdb")
    endif()

    # Generate a deployment script to be executed at install time
    # App bundles on macOS have an .app suffix
    if(APPLE)
        set(executable_path "${CMAKE_CURRENT_BINARY_DIR}/$<TARGET_FILE_NAME:DeepSkyStacker>.app")
    else()
        message ("Target filename:"  $<TARGET_FILE_NAME:DeepSkyStacker>)
        set(executable_path "${CMAKE_CURRENT_BINARY_DIR}/$<TARGET_FILE_NAME:DeepSkyStacker>")
    endif()

    message ("executable_path: " ${executable_path})
    message ("deploy tools options arg: " ${deploy_tool_options_arg})
     qt_generate_deploy_script(
         TARGET DeepSkyStacker
         OUTPUT_SCRIPT deploy_script
         CONTENT "
     qt_deploy_runtime_dependencies(
         EXECUTABLE \"${executable_path}\"
         DEPLOY_TOOL_OPTIONS ${deploy_tool_options_arg}
     )"
     )
else()
    qt_generate_deploy_app_script(
        TARGET ${PROJECT_NAME}
        OUTPUT_SCRIPT deploy_script
        DEPLOY_TOOL_OPTIONS ${deploy_tool_options_arg}
    )
endif()
install (SCRIPT ${deploy_script})
install(TARGETS ${PROJECT_NAME} BUNDLE DESTINATION .)

[Perdrix]

I tried this:

if(NOT LINUX)
    set (deploy_tool_options_arg "-verbose=1")
    if(APPLE)
        set(deploy_tool_options_arg "${deploy_tool_options_arg} -hardened-runtime -timestamp -no-strip")
        set(deploy_tool_options_arg "${deploy_tool_options_arg} \"-executable=$<TARGET_BUNDLE_CONTENT_DIR:DeepSkyStacker>/MacOS/DeepSkyStackerCL\"")
        set(deploy_tool_options_arg "${deploy_tool_options_arg} \"-executable=$<TARGET_BUNDLE_CONTENT_DIR:DeepSkyStacker>/MacOS/uchmviewer\"")
        set(deploy_tool_options_arg "${deploy_tool_options_arg} \"-codesign=Developer ID Application: David Partridge (VH8AYT3C7Y)\"")

and it seems to have worked ...

Was that the best way to do it?