Possible arguments: (none), c++0x, c++11-lang, gcc-c++11-lib, c++11-lib, c11, openmp, nestedfct, features

Determines which compiler to use based on any given wishes. Use c++11-lang if the port needs a C++11-capable compiler, gcc-c++11-lib if the port needs the g++ compiler with a C++11 library, and c++11-lib if the port also needs a C++11-ready standard library. If the port needs a compiler understanding C++0X, C11, OpenMP, or nested functions, the corresponding parameters can be used. Use features to request a list of features supported by the default compiler. After including bsd.port.pre.mk the port can inspect the results using these variables: