CODEWITHSUNDEEP
cmake
iLeoDo
iLeoDo

Reputation: 397

search a list of path in make for include_directories recursively

I'd like implement a function in cmake to search a list of path recursively.

Say given a search_paths: /a/b, /c, /d/e. I want to have a return_list with paths of directories under given search_paths which contains .h files. Here is my function:

FUNCTION(R_SEARCH search_paths return_list)
    FOREACH(search_path ${search_paths})
        # POINT A
        R_SEARCH_INNER(${search_path} inner_return)
        SET(all_list ${all_list} ${inner_return})
    ENDFOREACH()
    SET(${return_list} ${all_list})
ENDFUNCTION(R_SEARCH)


FUNCTION(R_SEARCH_INNER search_path return_list)
    FILE(GLOB_RECURSE new_list ${search_path} *.h)
    SET(dir_list "")
    FOREACH(file_path ${new_list})
        GET_FILENAME_COMPONENT(dir_path ${file_path} PATH)
        SET(dir_list ${dir_list} ${dir_path})
    ENDFOREACH()
    LIST(REMOVE_DUPLICATES dir_list)
    SET(${return_list} ${dir_list})
ENDFUNCTION(R_SEARCH_INNER)

based on http://public.kitware.com/pipermail/cmake/2012-June/050674.html

However, the inner function call on POINT A will only happen once. Could anybody give me some hints or provide a workable solution.

Upvotes: 2

Views: 1038

Answers (1)

Antonio
Antonio

Reputation: 20266

You should change this:

FILE(GLOB_RECURSE new_list ${search_path} *.h)

into

FILE(GLOB_RECURSE new_list ${search_path}/*.h)

See documentation:

Examples of recursive globbing include:

/dir/*.py  - match all python files in /dir and subdirectories

Also, as already suggested (see also here), change:

SET(${return_list} ${all_list})
[...]
SET(${return_list} ${dir_list})

into:

SET(${return_list} ${all_list} PARENT_SCOPE)
[...]
SET(${return_list} ${dir_list} PARENT_SCOPE)

So the corrected code becomes:

FUNCTION(R_SEARCH search_paths return_list)
    FOREACH(search_path ${search_paths})
        # POINT A
        R_SEARCH_INNER(${search_path} inner_return)
        SET(all_list ${all_list} ${inner_return})
    ENDFOREACH()
    SET(${return_list} ${all_list} PARENT_SCOPE)
ENDFUNCTION(R_SEARCH)


FUNCTION(R_SEARCH_INNER search_path return_list)
    FILE(GLOB_RECURSE new_list ${search_path}/*.h)
    SET(dir_list "")
    FOREACH(file_path ${new_list})
        GET_FILENAME_COMPONENT(dir_path ${file_path} PATH)
        SET(dir_list ${dir_list} ${dir_path})
    ENDFOREACH()
    LIST(REMOVE_DUPLICATES dir_list)
    SET(${return_list} ${dir_list} PARENT_SCOPE)
ENDFUNCTION(R_SEARCH_INNER)

Upvotes: 4

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