Is there a way to parallelize the build? I just checked out the github repo on a quad core 3.4GHz i7 with 16GB ram, and make -j8 took 37 minutes -- the c/cpp s

Is there a way to parallelize the build? I just checked out the github repo on a quad core 3.4GHz i7 with 16GB ram, and make -j8 took 37 minutes -- the c/cpp stuff (like llvm) built in parallel, but all the rust stuff did not, such that 7 cores (HT) of 8 were idle for the bulk of the build.