Meson and common gch header

[ghost]

Hi,

After reading https://mesonbuild.com/Precompiled-headers.html
In case of multi separate libraries that belong to the same project, that all have the same system includes, I would like to reuse a common precompiled header instead of having n times the same gch but in a local directory.

I am on Linux, using gcc if it is of any help.

Structure:
/Common
--my_gch.hxx
--my_gch.gch
/StaticLib1
--include/
--src/
/StaticLib2
--include/
--src/

Etc..

I would like each static lib to reuse the same common precompiled header.
Note: those libs work together so they are always compiled with the same options.

I basically want to be able to take into account to an already existing gch file.
How would I do that using Meson?

Thanks