[LLVMdev] Recompiling llvm+clang how-to?

[Duncan Sands]

Hi Journeyer J. Joh,

> I have questions about compiling Clang+llvm.
>
> I compile as the link below instructs.
>
> http://clang.llvm.org/get_started.html
>
> I do on Ubuntu 12.04.
>
> `time make -j5` prints for about 13 minutes to compile a brand new
> version of Clang+llvm.
> And after this I edit some C++ code(clang/tools/driver/driver.cpp) and
> compiles using the very same makefile which was used above sentence.

this is the correct procedure.

> But this time the make command event NOT return for about more than 13 hours.

This is not normal, you should investigate what process is stuck.

Ciao, Duncan.