I don't use the NMAKE, and I have downloaded the GNU's open source code. I have downloaded the GNU open source code. I can compile it with nmake under the Windows platform. Because of the development of new features, I want to debug, but I do it. Unclear NMAKE uses a very tool Debug it, a part of the NMAKE VC can you use VC to debug it? If you can, how to compile the makefile file with VC, thank you.