Simple build is a small set of Makefiles that are intended to automate Xcode builds from the command line. Its design goal is to use simple tools to achieve common build tasks like unit testing, coverage, archiving and app store submission.
Since it is actually a Makefile, it let you use common tools already installed on your macOS system. Its makefile is based on GNU Make 3.81 that is already installed on your macOS system.
GNU Build system is on the market for years. It is pretty stable and works pretty fine. For a standalone build, it is more than useful.
Install the Makefile on your project directory. Create a project.mk file with your project's definitions and you are set. You can customize the Makefile behavior by creating your own rules on project.mk.
Be sure to have both files Makefile and project.mk on the same directory of your workspace or project bundles.
This project is released under MIT License.