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C++ Build Commands

Basic C++ Compilation

GCC for C Programs

gcc filename.c -o program_name
./program_name  # Linux/macOS
program_name.exe  # Windows

G++ for C++ Programs

g++ filename.cpp -o program_name
./program_name  # Linux/macOS
program_name.exe  # Windows

Default Output Filename

If you don't specify an output name with -o:

g++ script.cpp
./a.out  # Linux/macOS
a.exe  # Windows

Compilation Options

Common compiler flags:

  • -g - Enable debugging information
  • -Wall - Enable most warning messages
  • -O or -O2 - Enable optimizations
  • -o <name> - Specify output filename
  • -c - Output an object file (.o) instead of an executable
  • -std=c++17 - Specify C++ standard (other options: c++11, c++14, c++20)
  • -std=c17 - Specify C standard (other options: c11, c99)

Working with Include Directories

g++ -o program -I/path/to/include program.cpp

Working with Libraries

General Library Linking

g++ program.cpp -o program -L/path/to/libs -lname_of_library

SDL2 Library Example

Generic SDL2 linking pattern:

gcc -std=c17 main.c -I/path/to/SDL2/include -L/path/to/SDL2/lib -Wall -lmingw32 -lSDL2main -lSDL2 -o main

Windows example with placeholder paths:

gcc -std=c17 main.c -I/SDL2/include -L/SDL2/lib -Wall -lmingw32 -lSDL2main -lSDL2 -o main

Command Shortcuts

For Windows, you can combine compilation and execution:

gcc -o program program.cpp && program.exe

For Linux/macOS:

g++ -o program program.cpp && ./program

Terminal Commands by Platform

Linux/macOS

g++ -o hello hello.cpp
./hello

Windows

g++ -o hello hello.cpp
.\hello.exe