Other makefile variables

• CPP: The C preprocessor which is used to preprocess C and C++ source code, and to determine the C and C++ make dependencies
• FPP: The C preprocessor which is used to preprocess Fortran source code
• CPPFLAGS: Flags which are passed to CPP, to CC, and to CXX
• FPPFLAGS: Flags which are passed to FPP
• CC: The C compiler
• CXX: The C++ compiler
• F77: The Fortran 77 compiler. This is only used if there is no Fortran 90 compiler
• F90: The Fortran 90 compiler. If this variable is set, it is also used to compile Fortran 77 files
• CFLAGS: Flags which are passed to CC
• CXXFLAGS: Flags which are passed to CXX
• F77FLAGS: Flags which are passed to F77
• F90FLAGS: Flags which are passed to F90
• LD: The binder. This should not be directly ld, but should be a compiler driver such as C++. Often, LD is the same as CXX
• LDFLAGS: Flags which are passed to LD