How to define a cmake macro in a sub_directory that uses the CURRENT_SOURCE_DIR?

Question

What I want to do is to create a CMakeLists.txt that defines a convenience macro to use in parent scope. I can use the macro just fine. However, I used the ${

Answer 1

You have to transfer CMAKE_CURRENT_LIST_DIR outside the macro into another variable or - in your case - a user defined global property:

set_property(GLOBAL PROPERTY DoStuffPath "${CMAKE_CURRENT_LIST_DIR}")

macro(do_stuff)
    get_property(_my_marcros_file GLOBAL PROPERTY DoStuffPath)
    message("This CMakeLists.txt file is in ${_my_marcros_file}")
endmacro()

That also works when the macros are defined in a file added with include().

References

• In CMake, how can I find the directory of an included file?
• What's the CMake syntax to set and use variables?

Answer 2

Use CMAKE_SOURCE_DIR to get a path to outermost parent CMakeLists.txt.