Implement the `manlint' target, for minimal validity checking of

the manual pages.  Mostly useful with mdoc(7) formatted manuals.

Requested by:	murray

share/mk/bsd.README

@@ -90,10 +90,14 @@ environment or otherwise.  You probably don't want to touch this file.
 The include file <bsd.man.mk> handles installing manual pages and their
 links.
 
-It has a single target:
+It has three targets:
 
+	all-man:
+		build manual pages.
 	maninstall:
-		Install the manual pages and their links.
+		install the manual pages and their links.
+	manlint:
+		verify the validity of manual pages.
 
 It sets/uses the following variables:
 

share/mk/bsd.man.mk

@@ -227,3 +227,16 @@ maninstall:: ${MAN}
 	done
 .endif
 .endif
+
+manlint:
+.if defined(MAN) && !empty(MAN)
+.for page in ${MAN}
+manlint: ${page}lint
+${page}lint: ${page}
+.if defined(MANFILTER)
+	${MANFILTER} < ${.ALLSRC} | ${MROFF_CMD} -ww >/dev/null
+.else
+	${MROFF_CMD} -ww ${.ALLSRC} >/dev/null
+.endif
+.endfor
+.endif