How to export a definition-scope function for use elsewhere?

[davidchisnall]

I have a set of helper functions that are defined at definition scope in an xmake.lua file that happened to be at the top level of a directory tree. I have now moved them to another location so that they can be used more easily from things that are not in the same project but now I cannot access them via includes(...). They were previously included with includes("../..") for some examples, but moving the examples to a directory parallel with the SDK rather than under it meant that they cannot be used there either.

How do I export a function into the scope of the files that includes them? Ideally, I would like to be able to export everything in this file, including things like the results of set_policy calls. I initially missed the coupling of scope and filesystem hierarchy initially, which is probably the root cause of a lot of my confusion with xmake. The SDK's xmake.lua file is calling a lot of set_* functions, but these are not always propagated into things that include it. When it is not in a parent directory of the including file, none of them are propagated, which is at least consistent.

[waruqi]

common/xmake.lua

function set_common()
    add_defines("TEST")
    add_defines("TEST2")
    -- ...
end

xmake.lua

add_rules("mode.debug", "mode.release")
includes("common")

target("testdef")
    set_kind("binary")
    add_files("src/*.cpp")
    set_common()

[davidchisnall]

Sorry, my error. I had a typo in the name of the variable that included the file. I was doing:

local sdkdir = "../sdk"
includes(sdk)

Unfortunately, includes does not error when you pass it nil and so I assumed that it was being included just not working.