gcc and g++

Overview

The C and C++ programming languages are governed by standards committees.

The current International Standard for the C programming language is ISO/IEC 9899:1999. The current American National (ANSI) standard is ANSI/ISO/IEC 9899:1995 which includes three additions and corrections since initial approval in 1990, until ANSI approves the 1999 update.

The current International Standard for the C++ programming language is ANSI/ISO/IEC 14882:1998 which first became a standard in 1998. See http://www.open-std.org/jtc1/sc22/wg21/docs/standards for more information on C++.

Usage

The GNU Compiler Collection C compiler is called gcc and the C++ compiler is g++.

This 8.4.1 version of GCC (located at /opt/nci/bin/gcc) is the system built-in default version. As such, it does not require any module to load.

You can also check the other versions installed in Gadi with a module query:

$ module avail gcc

We normally recommend using the latest version available and always recommend to specify the version number with the module command:

$ module load gcc/11.1.0

For more details on using modules see our modules help guide at https://opus.nci.org.au/display/Help/Environment+Modules.

The GNU Compiler Collection includes front ends for C, C++, Objective-C, Fortran, Java, Ada, and Go, as well as libraries for these languages (libstdc++, libgcj,...). GCC was originally written as the compiler for the GNU operating system. The GNU system was developed to be 100% free software, free in the sense that it respects the user's freedom.

See the documentation of gcc available at http://gcc.gnu.org/onlinedocs/.

The following would be of help in most of cases when looking for gcc and g++ compiler options:

$ man gcc