Make vkvg reproducible

[Rubo3]

This part of the message I posted on the issue #57 made me wonder:

Fatal : VkResult is -2 in /run/media/Volume/Marco/Nextcloud/Sviluppo/aur-vkvg/src/vkvg-0.2.1/vkh/src/vkh_image.c at line 57
Segmentation fault (core dumped)

The path of my build directory ended up in the binaries, that's why makepkg tells:

==> WARNING: Package contains reference to $srcdir
usr/lib/libvkh.so.0.1.0
usr/lib/libvkvg.so.0.2

So it seems the issue is here https://github.com/jpbruyere/vkhelpers/blob/41daf55f834aede1698aaa1afae02e2faf22530a/src/vkh_image.c#L57 with VK_CHECK_RESULT. Looking for some CMAKE variables, I found this https://cmake.org/cmake/help/latest/prop_tgt/BUILD_RPATH_USE_ORIGIN.html but even after raising the minimum CMake version to 3.14 and adding SET(BUILD_RPATH_USE_ORIGIN TRUE) I still get the warning.
How can we make this library reproducible?

[Rubo3]

It sufficed to substitute the source directory path with an empty string with sed. I pushed an updated PKGBUILD on the AUR.