CC="clang" CXX="clang++" OBJC="clang" CFLAGS='-Wall -g -O2' CPPFLAGS='-isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/usr/local/include' CXXFLAGS='-Wall -g -O2' OBJCFLAGS='-Wall -g -O2' FCFLAGS='-Wall -g -O2' F77FLAGS='-Wall -g -O2' --enable-memory-profiling --x-libraries=/opt/X11/lib --enable-R-framework