glade-- (glademm)

[Gezim Hoxha]

Hi. I've got Glade Interface Designer installed. I created a very simple
program and I choose the language as C++. However when I try to "Build"
the program, glade gives me this error:

Error running glade-- to generate the C++ source code.
Check that you have glade-- installed and that it is in your PATH.
Then try running 'glade-- <project_file.glade>' in a terminal.

So. How do I install glade-- ?

Thanks,
-Gezim