g++

Compile C++ file

$ g++ [source.cpp] -o [output]

$ g++ -Wall -Wextra [source.cpp] -o [output]

$ g++ -O2 [source.cpp] -o [output]

$ g++ -g [source.cpp] -o [output]

$ g++ -std=c++17 [source.cpp] -o [output]

g++ [options] files...

g++ is the GNU C++ compiler, part of the GNU Compiler Collection. It compiles C++ source code to executables or object files, supporting modern C++ standards.
The compiler handles preprocessing, compilation, assembly, and linking. It provides extensive optimization options and warning controls for quality code production.
g++ is the standard C++ compiler on Linux systems, supporting the full range of C++ language features.

FILES

Source files to compile.

Output filename.

Compile only, no linking.

Enable all warnings.

Generate debug info.

Optimization level (0-3, s, fast).

C++ standard (c++11, c++14, c++17, c++20).

Include path.

Library path.

Link library.

Display help information.

Large codebases compile slowly. Template errors can be cryptic. Different standards have different feature sets.

g++ is part of GCC (GNU Compiler Collection), originally written by Richard Stallman. It evolved from the original GNU C Compiler to support multiple languages including C++.

gcc(1), clang++(1), make(1)