Code:
[marcin@zet c1_menu(0)]$ gcc -o menu_item_data.o -c menu_item_data.c
menu_item_data.c: In function 'main':
menu_item_data.c:29: warning: incompatible implicit declaration of built-in function 'calloc'
Have a look at this file. I assume you use calloc(number,size) in an improper way. While gcc tries to link your binary it therefore does not resolve your call for calloc to the function calloc in libc/stdlib.h.
Maybe it'll help if you try to create and compile a minimum (standalone) example with calloc to check whether you use it properly.
