c89(1) on FreeBSD
The text 03a6fbff1a3c, as FreeBSD 2.2.9-RELEASE shipped it.
Posix.2 C language compiler
Flags it lists
-
-D -
-E -
-I -
-L -
-O -
-U -
-c -
-g -
-l -
-o -
-s