Index: head/devel/qt5-core/Makefile
===================================================================
--- head/devel/qt5-core/Makefile
+++ head/devel/qt5-core/Makefile
@@ -2,7 +2,7 @@
 
 PORTNAME=	core
 DISTVERSION=	${QT5_VERSION}
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	devel
 PKGNAMEPREFIX=	qt5-
 
Index: head/devel/qt5-core/files/patch-src_corelib_tools_qtimezoneprivate_tz.cpp
===================================================================
--- head/devel/qt5-core/files/patch-src_corelib_tools_qtimezoneprivate_tz.cpp
+++ head/devel/qt5-core/files/patch-src_corelib_tools_qtimezoneprivate_tz.cpp
@@ -0,0 +1,20 @@
+--- src/corelib/tools/qtimezoneprivate_tz.cpp.orig	2018-06-13 08:09:13.578248000 -0700
++++ src/corelib/tools/qtimezoneprivate_tz.cpp	2018-06-13 08:11:15.328743000 -0700
+@@ -1072,6 +1072,17 @@ QByteArray QTzTimeZonePrivate::systemTim
+         }
+     }
+ 
++    // On many FreeBSD systems, /etc/localtime is a regular file while the actual name is in /var/db/zoneinfo
++    if (ianaId.isEmpty()) {
++        QFile tzif(QStringLiteral("/var/db/zoneinfo"));
++        if (tzif.open(QIODevice::ReadOnly)) {
++            // TODO QTextStream inefficient, replace later
++            QTextStream ts(&tzif);
++            if (!ts.atEnd())
++                ianaId = ts.readLine().toUtf8();
++        }
++    }
++
+     // On some Red Hat distros /etc/localtime is real file with name held in /etc/sysconfig/clock
+     // in a line like ZONE="Europe/Oslo" or TIMEZONE="Europe/Oslo"
+     if (ianaId.isEmpty()) {