I get the message too when I run make from the terminal, from the project root (where GNUMakefile is located). But I noticed something else, too: My source code files are not really being added to project. Sure, I click on new file, and my program now has a main function, and the source files exist in the project directory, but I cannot see them under the categories in ProjectCenter (Sub project, non-project files and Supporting files). Even when I add them using the "Add Files..." option do they appear, or when I create them with "New In project". Could this have something to do with it? Is there a way to manually add these files to the project, like editing the .pcproject file with vim?
Again, thanks for your replies, and I hope I can develop someting with GNUStep soon :)
Sincerely,
Omar Campos