Getting the source code

The FreeBASIC source tree is maintained in Git. A normal developer checkout is enough for compiler, runtime, documentation, and packaging work.

git clone https://github.com/freebasic/fbc.git
cd fbc

Some developers use a fork instead of the main repository. In that case, clone the fork and keep the upstream repository configured as a second remote:

git remote add upstream https://github.com/freebasic/fbc.git
git fetch upstream

Updating a checkout

git fetch --all --prune
git pull --ff-only

If the compiler was already built before the update, see Getting source code updates and rebuilding FreeBASIC. The build system can rebuild only what changed in many cases, but bootstrap and platform changes sometimes require a cleaner rebuild.

Windows notes

On Windows, Git for Windows and MSYS2 Git both work. Be consistent about which shell owns the checkout when running long build scripts. Mixing Windows paths, MSYS2 paths, and Cygwin paths in one command line is a common source of avoidable build failures.