Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
calendar_notes.c:79:30: error: too many arguments to function ‘cnfunc’; expected 0, have 2
   79 |                         if ((*cnfunc)(n, appGUI) == TRUE)
      |                             ~^~~~~~~~ ~
make[2]: *** [Makefile:539: calendar_notes.o] Error 1
This snippet shows why the build failed.