m4(1) on FreeBSD
The text c603baba9d54, as FreeBSD 2.2.6-RELEASE, FreeBSD 2.2.5-RELEASE, FreeBSD 2.2.2-RELEASE shipped it.
macro language processor
Flags it lists
-
-D -
-U
The text c603baba9d54, as FreeBSD 2.2.6-RELEASE, FreeBSD 2.2.5-RELEASE, FreeBSD 2.2.2-RELEASE shipped it.
macro language processor
-D
-U