Homebrew 装 MacVim 时出错： ``` configure: creating cache auto/config.cache checking whether make sets $(MAKE)... yes checking for gcc... clang checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... configure: error: in `/private/tmp/macvim20150929-47906-1ri92fj/macvim-snapshot-77/src': configure: error: cannot run C compiled programs. If you meant to cross compile, use `--host'. See `config.log' for more details ```