And for reference:
minerve:dorsal tlecomte$ mpicc --version i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3) minerve:dorsal tlecomte$ uname -a Darwin #### 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:32:41 PDT 2011; root:xnu-1504.15.3~1/RELEASE_X86_64 x86_64
And for reference:
minerve:dorsal tlecomte$ mpicc --version darwin10- gcc-4.2. 1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3) 1504.15. 3~1/RELEASE_ X86_64 x86_64
i686-apple-
minerve:dorsal tlecomte$ uname -a
Darwin #### 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:32:41 PDT 2011; root:xnu-