Issue #8134 has been updated by naruse (Yui NARUSE). It seems because your clang is too old; use newer clang or gcc-4.2. Or report rvm to use gcc-4.2 prior clang/llvm-gcc. ---------------------------------------- Bug #8134: Compilation failure for 2.0.0 on 10.6.8 https://bugs.ruby-lang.org/issues/8134#change-37803 Author: vschiavoni (Valerio Schiavoni) Status: Third Party's Issue Priority: Normal Assignee: Category: Target version: ruby -v: Apple clang version 1.7 (tags/Apple/clang-77) (based on LLVM 2.9svn) Trying to install 2.0.0 with rvm on Mac OSX 10.6.8, the installation fails. -- http://bugs.ruby-lang.org/