CMAKE: How to install the dependencies of a target - c++

Question

I am trying to install an executable using cmake. My real problem here is: how to install the executable and its dependencies.
Here an example:
I want to install one executable that depend on two libraries of my cmake and one 3rdparty (pre-compiled).
set(EXECUTABLE_NAME MyExecutable)
file(GLOB_RECURSE ${EXECUTABLE_NAME}_SOURCES *.cpp)
add_executable(${EXECUTABLE_NAME} ${${EXECUTABLE_NAME}_SOURCES})
target_link_libraries(${EXECUTABLE_NAME} MyLibrary1
MyLibrary2
${Boost_PROGRAM_OPTIONS_LIBRARY})
install(TARGETS ${EXECUTABLE_NAME}
ARCHIVE DESTINATION lib
LIBRARY DESTINATION lib
RUNTIME DESTINATION bin
COMPONENT ${EXECUTABLE_NAME})
At the end I would like to find with this kind of CMakeLists.txt my two libraries, my executable and Boost_PROGRAM_OPTIONS_LIBRARY in the install folder and in my package.
What I have found, but I did not succeed to use:
BundleUtilities.cmake, here an example: https://cmake.org/Wiki/BundleUtilitiesExample.
As you can see it seems to do the perfect jobs, but it's complaining about "external prerequisites". I personally found that normal and I don't understand how to fix that. (Note: it succeeds in finding and copying the dependencies into a same folder before failing, Doc: https://cmake.org/cmake/help/v3.5/module/BundleUtilities.html)
GetPrerequisites.cmake. get_prerequisites is a lower level function that allow you to get the dependencies. The thing is, I don't any good way/best practice to use it.
Thanks,

Answer 1

I personally would make a library out of all of your dependencies with add_library(MyLibrary1 STATIC/SHARED/INTERFACE) and for boost most probably add_library(boost INTERFACE) followed by adding any include directories and linking the .as or .sos to them.
I would then link all my dependencies to MyExecutable as you have above. And at any point you can call the install function on all of these targets one at a time.
If you don't like repeating
install(TARGETS target
ARCHIVE DESTINATION lib
LIBRARY DESTINATION lib
RUNTIME DESTINATION bin
COMPONENT target
)
then you could break it out in to a function, something like this
function(INSTALL_CUSTOM target
install(TARGETS target
ARCHIVE DESTINATION lib
LIBRARY DESTINATION lib
RUNTIME DESTINATION bin
COMPONENT target
)
endfunction()
and then you could just call INSTALL_CUSTOM(MyLibrary1) or INSTALL_CUSTOM(boost).