Build with srcdir != builddir
The build of the Vapi was broken when srcdir != builddir.
This MR fixes that, and gets the CI to always build with srcdir != builddir, so that this kind of issues doesn't come back.
Edited by Mathieu Bridon
The build of the Vapi was broken when srcdir != builddir.
This MR fixes that, and gets the CI to always build with srcdir != builddir, so that this kind of issues doesn't come back.