---
name: "gbc3"
section: "1"
platform: "linux"
package: "gambas3-dev-tools"
version: "3.22.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gbc3"
---

# gbc3(1)

GAMBAS Compiler

## NAME

gbc3 - GAMBAS Compiler

## SYNOPSIS

**gbc3** \[options\] \[\<project directory\>\]

## DESCRIPTION

Gambas is a free development environment based on a Basic interpreter with object extensions, a mix of Java(tm) and Visual Basic(tm). With Gambas, you can quickly design your program GUI with Qt or GTK+, access database systems like MySQL, PostgreSQL, SQlite or ODBC databases, pilot applications with DBus, translate your program into many languages, create GStreamer, OpenGL or SDL applications, and so on...

**gbc3** is the compiler that allows you to compile Gambas projects into architecture-independent bytecode.

## OPTIONS

- **-a, --all**

  compile all

- **-b, --bytecode-version**

  force a specific bytecode version

- **-d, --output-desc**

  output class description files for the IDE

- **-e, --translate-errors**

  display translatable error messages

- **-F, --form \<form file\>**

  convert a form file into code and print it

- **-g, --debug**

  add debugging information

- **-h, --help**

  display help and exit

- **-j, --jobs \<count\>**

  number of background jobs (default: \<number of CPU cores\>)

- **-L, --license**

  display license

- **-n, --default-namespace \<namespace\>**

  default namespace for exported classes

- **-p, --two-pass**

  two-pass compilation to detect more errors

- **-q --quiet**

  do not print anything if compilation succeeds

- **-r, --root \<directory\>**

  gives the gambas installation directory

- **-s, --swap**

  swap endianness

- **-t, --translate**

  output translation files

- **-v, --verbose**

  verbose output

- **-V, --version**

  display version

- **-w, --warnings**

  display warnings

- **-x, --exec**

  define the 'Exec' preprocessor constant

## COMPILER FLAGS

- **-f check-prefix**

  check the prefix of variables if warnings are enable

- **-f public-module**

  module symbols are public by default

- **-f public-control**

  form controls are public

## AVAILABILITY

The Gambas website is at: **https://gambaswiki.org/website/**

The Gambas source code is available at: **https://gitlab.com/gambas/gambas/**

The documentation about the language is at: **https://gambaswiki.org/wiki**

## REPORTING BUGS

Report bugs to **http://gambaswiki.org/bugtracker**

## COPYRIGHT

Copyright© Benoît Minisini \<benoit.minisini@gambas-basic.org\>;

This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.