Can't install Ruby 2.0.0-p0 with RVM. Error running 'make -j8'

Question

I tried to install Ruby 2 using RVM today and it failed. I updated RVM, all my brew formulas and whatnot. This is what I get:

admin:/$ rvm install ruby-2.0.0         


        

Answer 1

Remove lines with 'rvm_autolibs_flag=' from '/etc/rvmrc', please clean it manually, then

rvm get stable
rvm autolibs enable
rvm install ruby || rvm install ruby --with-gcc=clang

Answer 2

Make sure to install latest version of Command Line Tools for Xcode and follow this instruction:

rvm get stable
rvm autolibs enable
rvm install ruby || rvm install ruby --with-gcc=clang