Definition: It's a command-line utility that makes package files. It allows you to specify extra options for packaging. '%etc%makepkg.conf' is a configuration file in Linux-based distributions. It contains system-specific settings, such as: - The target distribution (e.g., "python3") or the current directory. - Any custom build arguments to be passed to makepkg. - Package name and version. - Extra metadata for packaging. For example, it might set options like: ```makefile NAME=example VERSION=1.2.3 DESCRIPTION="A test package" DISTRO='ubuntu' ``` These settings are typically overridden by the `--build` option or other packages in a Linux distribution.