Hello,
it's been a long time when Mesa added meson buildsystem definitions,
but I never got time to switch Fedora's mesa build to use them.
Nowadays, mesa upstream is looking to drop autotools definitions in
19.0.0 release, so time came up.
I've prepared 18.0.0~rc5 builds with using meson buildsystem instead
of autotools:
https://copr.fedorainfracloud.org/coprs/ignatenkobrain/meson-mesa/
Please test it and let me know if something doesn't work as expected.
P.S. Builds are available just for rawhide.