Index: UPDATING
===================================================================
--- UPDATING	(revision 437745)
+++ UPDATING	(working copy)
@@ -6,6 +6,27 @@
 you update your ports collection, before attempting any port upgrades.
 
 20170404:
+  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.
+
+20170404:
   AFFECTS: users of Xapian 1.2.x and www/ikiwiki
   AUTHOR: sunpoet@FreeBSD.org
 
Index: Mk/bsd.qt.mk
===================================================================
--- Mk/bsd.qt.mk	(revision 437745)
+++ Mk/bsd.qt.mk	(working copy)
@@ -143,7 +143,8 @@
 				-libexecdir ${PREFIX}/${QT_LIBEXECDIR_REL} \
 				-qmldir ${PREFIX}/${QT_QMLDIR_REL} \
 				-examplesdir ${PREFIX}/${QT_EXAMPLEDIR_REL} \
-				-testsdir ${PREFIX}/${QT_TESTDIR_REL}
+				-testsdir ${PREFIX}/${QT_TESTDIR_REL} \
+				-no-use-gold-linker
 .  if ${ARCH} == i386 && empty(MACHINE_CPU:Msse2)
 CONFIGURE_ARGS+=-no-sse2
 .  endif