test not only if header frei0r.h exists, also use an item
[melted] / src / modules / fezzik /
drwxr-xr-x   ..
-rw-r--r-- 650 Makefile
-rw-r--r-- 1321 factory.c
-rw-r--r-- 5121 producer_fezzik.c
-rw-r--r-- 6961 producer_hold.c