GCC

From wikipedia,

"GCC (GNU Compiler Collection) is a set of compilers for various language (C, C++, Objective-C, Objective-C++, Fortran, Java and Ada) produced by the GNU Project."

gcc

GNU project C and C++ compiler. When used for C++ compilation, it internally calls g++ but it does not point all the standard C++ libraries. Make sure that you include -lstdc++ in this case. When GCC is compiled with Fortran language support, gcc recognizes Fortran source codes (.f, .for, .ftn, .f90, .f95 and .f03) and can compile them.<ref>http://gcc.gnu.org/onlinedocs/gfortran/GNU-Fortran-and-GCC.html#GNU-Fortran-and-GCC</ref>

g++

g++ (GNU C++) is a C++ compiler, part of GCC.

gfortran

gfortran is a Fortran compiler, part of GCC.

g77

g77 is the ancestor of gfortran and was included in GCC prior to version 4.<ref> http://gcc.gnu.org/onlinedocs/gfortran/GNU-Fortran-and-G77.html#GNU-Fortran-and-G77 </ref>

Notes

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