CMake add list of subdirectories

user_13104129 0
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In my CMake project I need to add a list of subdirectories.

  1. The correct way is not nice because I can not pass a list: 
    add_subdirectory(Helpers)
add_subdirectory(Lib1)
add_subdirectory(Lib2)
  2. subdirs can pass a list, but is deprecated: 
    subdirs(Helpers
        Lib1
        Lib2)

Is there a way to add subdirectories as a list? It seems like a common usecase.

If not: Why was it discontinued?

cmake c++
1 Answers

You could use foreach():

foreach(SUBDIR IN ITEMS
    Helpers
    Lib1
    Lib2
)
    add_subdirectory(${SUBDIR})
endforeach()

You could even wrap this in a custom function

function(my_subdirs SUB1)
    foreach(SUBDIR IN ITEMS ${SUB1} ${ARGN})
        add_subdirectory(${SUBDIR})
    endforeach()
endfunction()

...

my_subdirs(
    Helpers
    Lib1
    Lib2
)
user_29915250
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