diff --git a/external/gpl3/gcc/usr.bin/Makefile.target-defines b/external/gpl3/gcc/usr.bin/Makefile.target-defines
new file mode 100644
index 000000000000..4aedffcab1e5
--- /dev/null
+++ b/external/gpl3/gcc/usr.bin/Makefile.target-defines
@@ -0,0 +1,8 @@
+#	$NetBSD: Makefile.target-defines,v 1.1 2016/03/15 19:12:06 mrg Exp $
+
+CPPFLAGS+=	-I${BACKENDOBJ}
+CPPFLAGS+=	-DCONFIGURE_SPECS="\"\"" \
+		-DDEFAULT_TARGET_VERSION=\"${G_version}\" \
+		-DDEFAULT_TARGET_MACHINE=\"${MACHINE_GNU_PLATFORM}\" \
+		-DDEFAULT_REAL_TARGET_MACHINE=\"${MACHINE_GNU_PLATFORM}\" \
+		-DACCEL_DIR_SUFFIX=\"\"
diff --git a/external/gpl3/gcc/usr.bin/cpp/Makefile b/external/gpl3/gcc/usr.bin/cpp/Makefile
index 4ba21160b36a..8c39bb5cedec 100644
--- a/external/gpl3/gcc/usr.bin/cpp/Makefile
+++ b/external/gpl3/gcc/usr.bin/cpp/Makefile
@@ -1,13 +1,9 @@
-#	$NetBSD: Makefile,v 1.8 2014/05/31 22:55:17 mrg Exp $
+#	$NetBSD: Makefile,v 1.9 2016/03/15 19:12:06 mrg Exp $
 
 PROG=		cpp
 SRCS=		cppspec.c ${G_GCC_OBJS:.o=.c}
 
-CPPFLAGS+=	-I${BACKENDOBJ}
-# XXX
-CPPFLAGS+=	-DCONFIGURE_SPECS="\"\"" \
-		-DDEFAULT_TARGET_VERSION=\"${G_version}\" \
-		-DDEFAULT_TARGET_MACHINE=\"${MACHINE_GNU_PLATFORM}\"
+.include "../Makefile.target-defines"
 
 COPTS+=		-Wno-stack-protector
 
diff --git a/external/gpl3/gcc/usr.bin/frontend/Makefile b/external/gpl3/gcc/usr.bin/frontend/Makefile
index 48e6e8440e98..a2489ee10f62 100644
--- a/external/gpl3/gcc/usr.bin/frontend/Makefile
+++ b/external/gpl3/gcc/usr.bin/frontend/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.9 2015/01/07 02:05:41 christos Exp $
+#	$NetBSD: Makefile,v 1.10 2016/03/15 19:12:06 mrg Exp $
 
 LIBISPRIVATE=	yes
 
@@ -21,12 +21,11 @@ SRCS+=		driver-rs6000.c
 .PATH:		${DIST}/gcc/config/rs6000
 .endif
 
-CPPFLAGS+=	-I${GCCARCH} -I${BACKENDOBJ} -I. \
+.include "../Makefile.target-defines"
+
+CPPFLAGS+=	-I${GCCARCH} -I. \
 		${G_ALL_CFLAGS:M-D*} ${G_INCLUDES:M-I*:N-I.*} \
-		-DPREFIX=\"/usr\" \
-		-DDEFAULT_TARGET_VERSION=\"${G_version}\" \
-		-DDEFAULT_TARGET_MACHINE=\"${MACHINE_GNU_PLATFORM}\" \
-		-DCONFIGURE_SPECS="\"\""
+		-DPREFIX=\"/usr\"
 HOST_CPPFLAGS+=	-I${GCCARCH} ${G_ALL_CFLAGS:M-D*} ${G_INCLUDES:M-I*:N-I.*}
 
 DPSRCS+=	specs.h
diff --git a/external/gpl3/gcc/usr.bin/g++/Makefile b/external/gpl3/gcc/usr.bin/g++/Makefile
index c86ac212c3cf..87a6afd0b5b6 100644
--- a/external/gpl3/gcc/usr.bin/g++/Makefile
+++ b/external/gpl3/gcc/usr.bin/g++/Makefile
@@ -1,17 +1,13 @@
-#	$NetBSD: Makefile,v 1.5 2014/05/31 22:55:17 mrg Exp $
+#	$NetBSD: Makefile,v 1.6 2016/03/15 19:12:06 mrg Exp $
 
 PROG=		gplusplus
 PROGNAME=	g++
-SRCS=		${G_GXX_OBJS:.o=.c}
+SRCS=		${G_GXX_OBJS:S/cp\///:.o=.c}
 
 NOMAN=		# Linked to gcc.1
 .include <bsd.own.mk>
 
-CPPFLAGS+=	-I${BACKENDOBJ}
-# XXX
-CPPFLAGS+=	-DCONFIGURE_SPECS="\"\"" \
-		-DDEFAULT_TARGET_VERSION=\"${G_version}\" \
-		-DDEFAULT_TARGET_MACHINE=\"${MACHINE_GNU_PLATFORM}\"
+.include "../Makefile.target-defines"
 
 LINKS+=		${BINDIR}/g++ ${BINDIR}/c++
 
diff --git a/external/gpl3/gcc/usr.bin/gcc/Makefile b/external/gpl3/gcc/usr.bin/gcc/Makefile
index b7f54b6b000b..b88d5a880d50 100644
--- a/external/gpl3/gcc/usr.bin/gcc/Makefile
+++ b/external/gpl3/gcc/usr.bin/gcc/Makefile
@@ -1,13 +1,9 @@
-#	$NetBSD: Makefile,v 1.6 2015/04/17 12:41:46 martin Exp $
+#	$NetBSD: Makefile,v 1.7 2016/03/15 19:12:06 mrg Exp $
 
 PROG=		gcc
 SRCS=		gccspec.c ${G_GCC_OBJS:.o=.c}
 
-CPPFLAGS+=	-I${BACKENDOBJ}
-# XXX
-CPPFLAGS+=	-DCONFIGURE_SPECS="\"\"" \
-		-DDEFAULT_TARGET_VERSION=\"${G_version}\" \
-		-DDEFAULT_TARGET_MACHINE=\"${MACHINE_GNU_PLATFORM}\"
+.include "../Makefile.target-defines"
 
 COPTS.builtins.c = -Wno-stack-protector