GCC
GCC, which stands for GNU Compiler Collection, is a free, open-source compiler system produced by the GNU Project.
Installation
The quickest way to get started with GCC on Alpine Linux is by issuing the following command:
# apk add build-base
build-base is a meta-package that will install the gcc, libc-dev and binutils packages (amongst others).
For a smaller install you may install just gcc but will also need at least musl-dev or libc-dev (meta package for local libc).