cuda-gdb with -cuda doesn't work cuda-gdb doesn't work with -cuda?

When I compile my files with nvcc -g -G -cuda, the compiler return an error saying that the cuda files need to be compiled into object files.
But I’m working in a very huge software project and I don’t have permission to change the way the files are compiled. So I do need the cuda files to be in .cu.c extensions.
But this won’t allow me to debug the files in cuda-gdb.
Has anyone tried cuda-gdb with .cu.c extensions?
Is it possible to make the cuda-gdb working with .cu.c files?

As far as I know, this isn’t possible at this time.