How to get a folder relative to meson root folder, as an absolute path for find_library?

[aleinon]

Working in Windows 10, suppose I have a folder next to my meson project folder, which has a library I need, like this:

C:/Projects/MyMesonProject
C:/Projects/MyLibrary

Then in meson I get the library using the compiler like this:

cc = meson.get_compiler('cpp')
cc.find_library('mylib', dirs : ['C:/Projects/MyLibrary/lib'])

This works, but how can I change this so, that it works regardless of what path is in place of C:/Projects, considering that find_library requires an absolute path? So I need something like

cc.find_library('mylib', dirs : [dirs : [meson.global_source_root() + '../MyLibrary/lib'])

but this does not work with the ..

What would be the correct way to accomplish this?

EDIT:

Answering to myself, need one more slash before the two dots like this:
cc.find_library('mylib', dirs : [dirs : [meson.global_source_root() + '/../MyLibrary/lib'])

Well, let's hope this will be helpful for someone.

[QuLogic]

Your meson build should definitely definitely not assume some structure outside of it. Perhaps you might want to look into subprojects?

[aleinon]

Definitely it's best to look into all options and choose what works the best for a particular use case. But subprojects deserve a mention in this context. Surely they are useful for many.