alt Hacker NewsIt is a political not a technical decision. Essentially the same like the Linux kernel not encouraging the use of out-of-tree kernel modules. https://gcc.gnu.org/legacy-ml/gcc/2000-01/msg00572.html
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chuckadams • last Tuesday at 6:56 PM
Linux's position is more like "your out-of-tree code is not our problem". Linus didn't go out of his way to make out-of-tree modules more difficult to write.
And it shows how silly the idea is. gcc still sees plenty of forks from vendors who don't upstream, and llvm sees a lot more commercial participation. Unfortunately the Linux kernel equivalent doesn't exist.