Note: Although old, this video is very relevant to the current FLTK 1.x.x release stream. Some things have changed since it was made:

• The Makefile will need to be adjusted since this video was made. The compiler libs are a bit different now. To keep current, you can just build one of the FLTK test programs in the IDE, and look at the build log to see what libs are needed in your Makefile. Or, if you use unix, you can use the new 'fltk-config' script to compile FLTK applications, which handles including the appropriate libs for you.
• Fluid now has its own 'build output' window to show errors from the compiler. You may need to add '2>&1' to your build commands so that both stdout and stderr appear in fluid's build output window.

  So instead of:

           cmd /k "nmake hello && hello && exit || pause && exit"
           

  ..you can probably just use:

           nmake hello && hello && exit || pause && exit 2>&1