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Documented in https://gcc.gnu.org/onlinedocs/jit/ and existing= =20 > in GCC 12. >=20 > (Those wanting a real just in time compiler should consider using the=20 > GNU lightning library, see https://www.gnu.org/software/lightning/ ; it= =20 > is not GCC related, smaller, but generates slower machine code than=20 > libgccjit). Does that happen automatically or do I need to somehow configure something for this? I followed this guide: https://github.com/NapoleonWils0n/cerberus/blob/master/fedora/emacs-build-f= edora.org I'm wondering why Fedora still has only the X11 version of emacs which doesn't even work right. Wayland is the default since a while, so Fedora needs a wayland version.