Feature Req: build controlled by external command

My project is a Makefile and I'd like to keep it that way, when it comes to "build" phase. Clion creates a Cmake file upon source import and that's fine, Clion uses it as project metadata (in addition to cmake using it during build phase). But when I request a build, if I could have a way to simply run a custom build script, instead of Cmake, that'd hit the spot. In my case the script would just invoke make for a particular target.

Clion could still monitor the output of the build script to catch/report compiler errors etc.

I'd maintain the Makefile by hand (as opposed to cmake generating it on the fly).