About This File
WADGC takes text files and PPM images as input and creates PWADs with graphic entries (sprites, wall patches, new textures and flats).
WADLC takes text files as input and creates PWADs with level maps. Node building is not included. IDBSP works great for that. This tool is somewhat less useful than WADGC. I like it, but if you want an interactive interface, this is nothing for you.
Since flats don't work from PWADs I also hacked a utility to add flats to the main IWAD file, called NEWFLATS. It replaces existing entries and/or adds new ones, creating a new IWAD file.
Together with DEU or some other tool for manipulating PWADS and concatenating them, WADGC and NEWFLATS provide a way of making completely new graphic environments for Doom. You need a good knowledge of the unofficial Doom specs to do anything useful, but it's quite workable. If you build a new IWAD file with DEU, you might even use DEU to build the levels. I think.
The tools are distributed as source code, written to compile under Unix. I have tested them only on a Sun workstation, but any Unix environment should do.
It might take some tweaking to get it to run on a PC. I wouldn't know, since I know nothing more about DOS and PC's than that the bytes are in the wrong order. :-)