Index: head/share/mk/bsd.port.mk
===================================================================
--- head/share/mk/bsd.port.mk	(revision 287435)
+++ head/share/mk/bsd.port.mk	(revision 287436)
@@ -1,28 +1,32 @@
 # $FreeBSD$
 
 .if !defined(PORTSDIR)
 # Autodetect if the command is being run in a ports tree that's not rooted
 # in the default /usr/ports.  The ../../.. case is in case ports ever grows
 # a third level.
 .for RELPATH in . .. ../.. ../../..
 .if !defined(_PORTSDIR) && exists(${.CURDIR}/${RELPATH}/Mk/bsd.port.mk)
 _PORTSDIR=	${.CURDIR}/${RELPATH}
 .endif
 .endfor
 _PORTSDIR?=	/usr/ports
+.if defined(.PARSEDIR)
+PORTSDIR=	${_PORTSDIR:tA}
+.else # fmake doesn't have :tA
 PORTSDIR!=	realpath ${_PORTSDIR}
+.endif
 .endif
 
 BSDPORTMK?=	${PORTSDIR}/Mk/bsd.port.mk
 
 # Needed to keep bsd.own.mk from reading in /etc/src.conf
 # and setting MK_* variables when building ports.
 _WITHOUT_SRCCONF=
 
 # Enable CTF conversion on request.
 .if defined(WITH_CTF)
 .undef NO_CTF
 .endif
 
 .include <bsd.own.mk>
 .include "${BSDPORTMK}"
Index: head/share/mk/bsd.port.subdir.mk
===================================================================
--- head/share/mk/bsd.port.subdir.mk	(revision 287435)
+++ head/share/mk/bsd.port.subdir.mk	(revision 287436)
@@ -1,18 +1,22 @@
 # $FreeBSD$
 
 .if !defined(PORTSDIR)
 # Autodetect if the command is being run in a ports tree that's not rooted
 # in the default /usr/ports.  The ../../.. case is in case ports ever grows
 # a third level.
 .for RELPATH in . .. ../.. ../../..
 .if !defined(_PORTSDIR) && exists(${.CURDIR}/${RELPATH}/Mk/bsd.port.mk)
 _PORTSDIR=	${.CURDIR}/${RELPATH}
 .endif
 .endfor
 _PORTSDIR?=	/usr/ports
+.if defined(.PARSEDIR)
+PORTSDIR=	${_PORTSDIR:tA}
+.else # fmake doesn't have :tA
 PORTSDIR!=	realpath ${_PORTSDIR}
+.endif
 .endif
 
 BSDPORTSUBDIRMK?=	${PORTSDIR}/Mk/bsd.port.subdir.mk
 
 .include "${BSDPORTSUBDIRMK}"