Specify Makefile for C files in Xcode Objective-C project

I have an Objective-C project in Xcode. I also have a bunch of C files that come with a Makefile. I want to integrate the C files into the Xcode project. Dragging the C files in the project does not work as Xcode complains of undefined symbols during compilation. How can I specify the Makefile so that Xcode can properly compile the C files?

https://stackoverflow.com/questions/66760029/specify-makefile-for-c-files-in-xcode-objective-c-project March 23, 2021 at 05:00PM