llvm+clang v10 on Linux builds 8 GB in bin, 13GB in lib and >5 GB in tools + things here an there. That's ~30 GB. Then you need that much for the install. So hard requirement 2 x 30 GB + some slack. Last time I built it was around version 4 and it did not need that much disk space.
> llvm+clang v10 on Linux builds 8 GB in bin, 13GB in lib and >5 GB in tools + things here an there.
just checked and my build folder with llvm & clang is 3GB. That's a release build (pass -DCMAKE_BUILD_TYPE=Release !!) - you don't need a debug build unless you're hacking on llvm itself
> Then you need that much for the install
you want make install/strip, not make install (but why do you need to install ? you can run clang from the build dir just fine)