A`PKGBUILD`is a shell script containing the build information required by[Arch Linux](../../linux/Arch%20Linux.md)packages. [Arch Wiki](https://wiki.archlinux.org/title/PKGBUILD)
Packages in [Arch Linux](../../linux/Arch%20Linux.md) are built using the [makepkg](makepkg.md) utility. When [makepkg](makepkg.md) is run, it searches for a PKGBUILD file in the current directory and follows the instructions therein to either compile or otherwise acquire the files to build a package archive (pkgname.pkg.tar.zst). The resulting package contains binary files and installation instructions, readily installable with [pacman](Pacman.md).
Mandatory variables are `pkgname`, `pkgver`, `pkgrel`, and `arch`. `license` is not strictly necessary to build a package, but is recommended for any PKGBUILD shared with others, as [makepkg](makepkg.md) will produce a warning if not present.