[ale] Using dependency files with GCC

[jknapka at kneuro.net (JK)]

John Mills wrote:

> ALErs -
> 
> I'm bringing a legacy 'Makefile' up to date, in particular replacing
> 'makedepend' with 'gcc -MM' to create a dependency file: 'depend.mak'.
> 
> My rule produces a healthy looking dependency file, but I don't see how to
> instruct 'make' to use the dependency rules in the generated file.
> 
> How can I pull in the dependency file so the rules are applied in a build? 

Putting the line:

include <file.with.dependencies>

in your Makefile should do it.

-- JK