Minor upgrades to gpi_make to assist with a new GPI node that won't compile without C++11 and Intel SSE4.2. The latter requires OSX 10.12+ as the target version or an appropriate -march flag. This PR allows the OSX target to be set via a flag to gpi_make, and sets C++11 as the default compiler flag unless another -std-c++XX flag is passed via the user's .gpirc.
Minor upgrades to gpi_make to assist with a new GPI node that won't compile without C++11 and Intel SSE4.2. The latter requires OSX 10.12+ as the target version or an appropriate
-marchflag. This PR allows the OSX target to be set via a flag to gpi_make, and sets C++11 as the default compiler flag unless another-std-c++XXflag is passed via the user's.gpirc.