Adding two macOS .app directories to a bundle

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I am using CMake’s Bundle to install my single application. However, I have now developed a new one. For Linux and Windows it is no issue as they can both live in the bin folder.
However, for macOS, I would like, for distribution as a .dmg or .pkg to have them in a separate /Applications/*.app directory, so the layout is:

mrv2.app
          Contents
               macOS
                      mrv2  # bash script to configure paths and DYLD_LIBRARY_PATH
               Resources
                       bin/mrv2   # actual executable
                       lib/lib...dylib # etc
                       share/  
                       ..etc..


hdr.app
          Contents
               macOS
                      hdr  # bash script to configure paths and DYLD_LIBRARY_PATH
               Resources
                       bin/hdr   # actual executable
                       lib/lib...dylib # etc
                       share/  
                       ..etc..

I am currently using the CPack Bundle for macOS from Cmake, but it seems it can only deal with a single include(CPack), right?