--- Mk/bsd.qt.mk	(revision 442062)
+++ Mk/bsd.qt.mk	(working copy)
@@ -147,7 +147,9 @@ 
 .  if ${ARCH} == i386 && empty(MACHINE_CPU:Msse2)
 CONFIGURE_ARGS+=-no-sse2
 .  endif
-
+# Work around a bug in current binutils, where the gold linker creates
+# duplicate symbols. See pr 218187. Disable the gold-linker for Qt5 ports.
+CONFIGURE_ARGS+=	-no-use-gold-linker
 . endif
 
 . if defined(WANT_QT_DEBUG) || defined(WITH_DEBUG)
--- UPDATING	(revision 442062)
+++ UPDATING	(working copy)
@@ -5,6 +5,27 @@ 
 You should get into the habit of checking this file for changes each time
 you update your ports collection, before attempting any port upgrades.
 
+20170530:
+  AFFECTS: users of Qt 5 in presence of binutils
+  AUTHOR: amdmi3@FreeBSD.org
+
+  gold linker from binutils 2.28 may produce duplicate library
+  symbols, which makes shared libraries created with it not usable
+  with conventional ld linker.
+
+  This affects Qt, as qt5-qmake will detect gold and use it to build
+  Qt libraries. Broken libQt5Core will be produced and ports which
+  depend on it will then fail to link with the following errors:
+
+    ...lib/libQt5Core.so:(.dynamic+0x27ac8): multiple definition of `__bss_start at Qt_5'
+    ...lib/libQt5Core.so:(.dynamic+0x27ac8): first defined here
+    ...lib/libQt5Core.so:(.dynamic+0x27ac8): multiple definition of `_edata at Qt_5'
+    ...lib/libQt5Core.so:(.dynamic+0x27ac8): first defined here
+    ...lib/libQt5Core.so:(.dynamic+0x2b2d0): multiple definition of `_end at Qt_5'
+
+  Qt5 was fixed to ignore gold. If you see these errors, you
+  need to rebuild qt5-qmake, then all qt5-* ports.
+
 20170529:
   AFFECTS: users of sysutils/dsbmd
   AUTHOR: mk@freeshell.de
--- devel/qt5-core/Makefile	(revision 442062)
+++ devel/qt5-core/Makefile	(working copy)
@@ -2,6 +2,7 @@ 
 
 PORTNAME=	core
 DISTVERSION=	${QT5_VERSION}
+PORTREVISION=	1
 CATEGORIES=	devel
 PKGNAMEPREFIX=	qt5-
 
--- devel/qt5-qmake/Makefile	(revision 442062)
+++ devel/qt5-qmake/Makefile	(working copy)
@@ -2,7 +2,7 @@ 
 
 PORTNAME=	qmake
 DISTVERSION=	${QT5_VERSION}
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	devel
 PKGNAMEPREFIX=	qt5-