Index: head/Mk/Uses/dos2unix.mk
===================================================================
--- head/Mk/Uses/dos2unix.mk	(revision 479777)
+++ head/Mk/Uses/dos2unix.mk	(revision 479778)
@@ -1,42 +1,46 @@
 # $FreeBSD$
 #
 # Provide support to convert files from dos2unix
 #
 # DOS2UNIX_REGEX	a regular expression to match files that needs to be converted
 # DOS2UNIX_FILES	list of files of glob pattern relative to ${WRKSRC}
 # DOS2UNIX_GLOB		list of glob pattern find(1) will match with
 # DOS2UNIX_WRKSRC	top-level path for directory traversal instead of ${WRKSRC}
 #
 # MAINTAINER: portmgr@FreeBSD.org
 
 .if !defined(_INCLUDE_USES_DOS2UNIX_MK)
 _INCLUDE_USES_DOS2UNIX_MK=	yes
 
+.if !empty(dos2unix_ARGS)
+IGNORE=	USES=dos2unix takes no arguments
+.endif
+
 .if !defined(DOS2UNIX_FILES) && !defined(DOS2UNIX_REGEX) && !defined(DOS2UNIX_GLOB)
 _DOS2UNIX_ALL=	yes
 .endif
 
 DOS2UNIX_WRKSRC?=	${WRKSRC}
 
 _USES_patch+=	200:dos2unix
 dos2unix:
 	@${ECHO_MSG} "===>   Converting DOS text files to UNIX text files"
 .if defined(_DOS2UNIX_ALL)
 	@${FIND} ${DOS2UNIX_WRKSRC} -type f -print0 | \
 		${XARGS} -0 ${SED} -i '' -e 's/
$$//'
 .else
 .if defined(DOS2UNIX_FILES)
 	@(cd ${DOS2UNIX_WRKSRC}; \
 		${ECHO_CMD} ${DOS2UNIX_FILES} | ${XARGS} ${SED} -i '' -e 's/
$$//' )
 .elif defined(DOS2UNIX_REGEX)
 	@${FIND} -E ${DOS2UNIX_WRKSRC} -type f -iregex '${DOS2UNIX_REGEX}' -print0 | \
 		${XARGS} -0 ${SED} -i '' -e 's/
$$//'
 .else
 .for f in ${DOS2UNIX_GLOB}
 	@${FIND} ${DOS2UNIX_WRKSRC} -type f -name '${f}' -print0 | \
 		${XARGS} -0 ${SED} -i '' -e 's/
$$//'
 .endfor
 .endif
 .endif
 
 .endif