Index: head/Mk/Uses/dos2unix.mk
===================================================================
--- head/Mk/Uses/dos2unix.mk
+++ head/Mk/Uses/dos2unix.mk
@@ -5,6 +5,7 @@
 # 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
 
@@ -15,22 +16,24 @@
 _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} ${WRKSRC} -type f -print0 | \
+	@${FIND} ${DOS2UNIX_WRKSRC} -type f -print0 | \
 		${XARGS} -0 ${SED} -i '' -e 's/
$$//'
 .else
 .if defined(DOS2UNIX_FILES)
-	@(cd ${WRKSRC}; \
+	@(cd ${DOS2UNIX_WRKSRC}; \
 		${ECHO_CMD} ${DOS2UNIX_FILES} | ${XARGS} ${SED} -i '' -e 's/
$$//' )
 .elif defined(DOS2UNIX_REGEX)
-	@${FIND} -E ${WRKSRC} -type f -iregex '${DOS2UNIX_REGEX}' -print0 | \
+	@${FIND} -E ${DOS2UNIX_WRKSRC} -type f -iregex '${DOS2UNIX_REGEX}' -print0 | \
 		${XARGS} -0 ${SED} -i '' -e 's/
$$//'
 .else
 .for f in ${DOS2UNIX_GLOB}
-	@${FIND} ${WRKSRC} -type f -name '${f}' -print0 | \
+	@${FIND} ${DOS2UNIX_WRKSRC} -type f -name '${f}' -print0 | \
 		${XARGS} -0 ${SED} -i '' -e 's/
$$//'
 .endfor
 .endif