Index: Mk/bsd.port.mk
===================================================================
RCS file: /home/pcvs/ports/Mk/bsd.port.mk,v
retrieving revision 1.627
diff -u -r1.627 bsd.port.mk
--- Mk/bsd.port.mk	6 Sep 2009 21:18:48 -0000	1.627
+++ Mk/bsd.port.mk	11 Sep 2009 15:49:34 -0000
@@ -891,9 +891,13 @@
 #				- The name of target to call when GNU_CONFIGURE is
 #				  defined.
 #				  Default: ${ARCH}-portbld-freebsd${OSREL}
+# GNU_CONFIGURE_PREFIX
+#				- The directory passed as prefix to the configure script if
+#				  GNU_CONFIGURE is set.
+#				  Default: ${PREFIX}
 # CONFIGURE_ARGS
 #				- Pass these args to configure if ${HAS_CONFIGURE} is set.
-#				  Default: "--prefix=${PREFIX} --infodir=${PREFIX}/${INFO_PATH}
+#				  Default: "--prefix=${GNU_CONFIGURE_PREFIX} --infodir=${PREFIX}/${INFO_PATH}
 #				  --mandir=${MANPREFIX}/man --build=${CONFIGURE_TARGET}" if
 #				  GNU_CONFIGURE is set, "CC=${CC} CCFLAGS=${CFLAGS}
 #				  PREFIX=${PREFIX} INSTALLPRIVLIB=${PREFIX}/lib
@@ -2908,7 +2912,8 @@
 .if !defined(CONFIGURE_MAX_CMD_LEN)
 CONFIGURE_MAX_CMD_LEN!=	${SYSCTL} -n kern.argmax
 .endif
-CONFIGURE_ARGS+=	--prefix=${PREFIX} $${_LATE_CONFIGURE_ARGS}
+GNU_CONFIGURE_PREFIX?=	${PREFIX}
+CONFIGURE_ARGS+=	--prefix=${GNU_CONFIGURE_PREFIX} $${_LATE_CONFIGURE_ARGS}
 CONFIGURE_ENV+=		lt_cv_sys_max_cmd_len=${CONFIGURE_MAX_CMD_LEN}
 HAS_CONFIGURE=		yes