Index: ports/Mk/bsd.gcc.mk
===================================================================
RCS file: /home/pcvs/ports/Mk/bsd.gcc.mk,v
retrieving revision 1.62
diff -u -r1.62 bsd.gcc.mk
--- ports/Mk/bsd.gcc.mk	12 Nov 2011 22:03:55 -0000	1.62
+++ ports/Mk/bsd.gcc.mk	26 Jan 2012 14:41:30 -0000
@@ -98,8 +98,11 @@
 MAKE_ENV+=		F77="${F77}" FC="${FC}" FFLAGS="${FFLAGS}"
 .endif
 
+.if defined(USE_GCC_BUILD) && !defined(USE_GCC)
+USE_GCC=	${USE_GCC_BUILD}
+.endif
 
-.if defined(USE_GCC)
+.if defined(USE_GCC) && !defined(GCC_BOOTSTRAPPING)
 
 # GCC 4.5 got disconnected 2011-11-12, take care of any uses.
 .if ${USE_GCC} == "4.5+"
@@ -175,7 +178,7 @@
 .endif # defined(USE_GCC)
 
 
-.if defined(_USE_GCC)
+.if defined(_USE_GCC) && !defined(GCC_BOOTSTRAPPING)
 # A concrete version has been selected.  Determine if the installed OS 
 # features this version in the base, and if not then set proper ports
 # dependencies, CC, CXX, CPP, and flags.
@@ -205,7 +208,9 @@
 .if defined(_GCC_BUILD_DEPENDS)
 BUILD_DEPENDS+=	${_GCC_PORT_DEPENDS}:${PORTSDIR}/lang/${_GCC_BUILD_DEPENDS}
 . if ${_USE_GCC} != 3.4
+.  if !defined(USE_GCC_BUILD)
 RUN_DEPENDS+=	${_GCC_PORT_DEPENDS}:${PORTSDIR}/lang/${_GCC_BUILD_DEPENDS}
+.  endif
 .  if ${_USE_GCC} != 4.2
 # Later GCC ports already depend on binutils; make sure whatever we
 # build leverages this as well.
Index: ports/Mk/bsd.port.mk
===================================================================
RCS file: /home/pcvs/ports/Mk/bsd.port.mk,v
retrieving revision 1.703
diff -u -r1.703 bsd.port.mk
--- ports/Mk/bsd.port.mk	22 Jan 2012 15:41:33 -0000	1.703
+++ ports/Mk/bsd.port.mk	26 Jan 2012 14:41:31 -0000
@@ -311,6 +311,8 @@
 #				  the regular expression.
 # USE_GCC		- If set, this port requires this version of gcc, either in
 #				  the system or installed from a port.
+# USE_GCC_BUILD		- If set, this port builds using this version of gcc,
+#				  but adds no runtime dependency.
 # USE_CSTD		- Override the default C language standard (gnu89, gnu99)
 # USE_BINUTILS	- Use binutils suite from port instead of the version in base.
 # USE_GMAKE		- If set, this port uses gmake.
@@ -1672,7 +1674,7 @@
 CONFIGURE_ENV+=	MAKE=${GMAKE}
 .endif
 
-.if defined(USE_GCC) || defined(USE_FORTRAN)
+.if defined(USE_GCC) || defined(USE_GCC_BUILD) || defined(USE_FORTRAN)
 .include "${PORTSDIR}/Mk/bsd.gcc.mk"
 .endif