I downloaded a plugin called Warp, and it came as a *.c file. I compiled it using gcc, but it is giving me an error message because it cannot find the gimp.h header file that is called in the preprocessor directive. I looked at the source code, and from the bits and pieces I know about programming, I saw that gimp.h was enclosed in double-quotes, meaning that it is looking for that header file in the current directory. What directory must you compile this in? Where is gimp.h located?
