---
syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
---
# gcc

> Preprocess and compile C and C++ source files, then assemble and link them together.
> Part of GCC (GNU Compiler Collection).
> More information: <https://gcc.gnu.org>.

- Compile multiple source files into an executable:

`gcc {{path/to/source1.c path/to/source2.c ...}} {{-o|--output}} {{path/to/output_executable}}`

- Activate output of all errors and warnings:

`gcc {{path/to/source.c}} -Wall {{-o|--output}} {{output_executable}}`

- Show common warnings, debug symbols in output, and optimize without affecting debugging:

`gcc {{path/to/source.c}} -Wall {{-g|--debug}} -Og {{-o|--output}} {{path/to/output_executable}}`

- Include libraries from a different path:

`gcc {{path/to/source.c}} {{-o|--output}} {{path/to/output_executable}} -I{{path/to/header}} -L{{path/to/library}} -l{{library_name}}`

- Compile source code into Assembler instructions:

`gcc {{-S|--assemble}} {{path/to/source.c}}`

- Compile source code into an object file without linking:

`gcc {{-c|--compile}} {{path/to/source.c}}`

- Optimize the compiled program for performance:

`gcc {{path/to/source.c}} -O{{1|2|3|fast}} {{-o|--output}} {{path/to/output_executable}}`

- Display version:

`gcc --version`
