gmake compile all files in a directory

we have some C++ code that we need to create a make file in. Each .h and .C pair create an object and then some objects are linked together to form a executable. Pretty standard stuff.

This non-gnu make command just builds all the files into object in a directory

%.o:%.C
    $(CC) $(CPFLAGS)  -c  $<

What this does is for each %.C file (ie every .C file) build a corresponding .o file.

Does anybody know how to do this with gmake?

Cheers

Mark