5.7.8.15 MT: Change Rule Target Option

The -MT target option changes the target of the rule emitted by dependency generation.

By default, the preprocessor takes the name of the main input file, including any path, deletes any file suffix such as .c, and appends the platform’s usual object suffix. The result is the target. An -MT option sets the target to be exactly the string you specify. If you want multiple targets, you can specify them as a single argument to -MT, or use multiple -MT options.

For example:

-MT '$(objpfx)foo.o' might give $(objpfx)foo.o: foo.c