How to prepend all filenames on the list with common path?

Question

How can I prepend all filenames on the list with a common path prefix automatically? For instance having a list of files in CMakeLists.txt:

SET(SRC_FILES foo         


        

Answer 1

As an improvement to Ding-Yi Chen's answer, if you still need to support pre-3.12 CMake as I do, you can use following code:

function(list_transform_prepend var prefix)
    set(temp "")
    foreach(f ${${var}})
        list(APPEND temp "${prefix}${f}")
    endforeach()
    set(${var} "${temp}" PARENT_SCOPE)
endfunction()

Advantage of this solution is, that interface is closer to one is CMake 3.12 list(TRANSFORM ...) and the change is done in-place.

Used like this

list_transform_prepend(FILES_TO_TRANSLATE "${CMAKE_CURRENT_SOURCE_DIR}/")