Index: head/devel/qt5-core/Makefile
===================================================================
--- head/devel/qt5-core/Makefile
+++ head/devel/qt5-core/Makefile
@@ -2,6 +2,7 @@
 
 PORTNAME=	core
 DISTVERSION=	${QT5_VERSION}
+PORTREVISION=	1
 CATEGORIES=	devel
 PKGNAMEPREFIX=	qt5-
 
Index: head/devel/qt5-core/files/patch-src_corelib_io_qlockfile__unix.cpp
===================================================================
--- head/devel/qt5-core/files/patch-src_corelib_io_qlockfile__unix.cpp
+++ head/devel/qt5-core/files/patch-src_corelib_io_qlockfile__unix.cpp
@@ -0,0 +1,148 @@
+--- src/corelib/io/io.pri.orig  2018-02-08 18:24:48 UTC
++++ src/corelib/io/io.pri
+@@ -178,6 +178,9 @@ win32 {
+             SOURCES += \
+                 io/qstandardpaths_unix.cpp \
+                 io/qstorageinfo_unix.cpp
++            freebsd {
++                LIBS += -lkvm -lprocstat
++            }
+         }
+
+         linux|if(qnx:qtConfig(inotify)) {
+--- src/corelib/io/qlockfile_unix.cpp.orig      2018-02-08 18:24:48 UTC
++++ src/corelib/io/qlockfile_unix.cpp
+@@ -75,6 +75,8 @@
+ #   include <sys/sysctl.h>
+ # if !defined(Q_OS_NETBSD)
+ #   include <sys/user.h>
++#   include <kvm.h>
++#   include <libprocstat.h>
+ # endif
+ #endif
+
+@@ -246,23 +248,44 @@ QString QLockFilePrivate::processNameByPid(qint64 pid)
+     struct kinfo_proc kp;
+     int mib[6] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, (int)pid, sizeof(struct kinfo_proc), 1 };
+ # else
++    QString nameFromProcstat;
++    kvm_t *kvm = kvm_open(nullptr, "/dev/null", nullptr, O_RDONLY, "");
++    if (kvm) {
++        int cnt;
++        struct kinfo_proc *kp = kvm_getprocs(kvm, KERN_PROC_PID, getpid(), &cnt);
++        if (kp) {
++            struct procstat *ps = procstat_open_sysctl();
++            char **argv = procstat_getargv(ps, kp, 0);
++            if (argv != nullptr && argv[0] != nullptr)
++                nameFromProcstat = QString::fromLocal8Bit(argv[0]);
++            procstat_close(ps);
++        }
++        kvm_close(kvm);
++    }
+     struct kinfo_proc kp;
+     int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, (int)pid };
+ # endif
+-    size_t len = sizeof(kp);
+-    u_int mib_len = sizeof(mib)/sizeof(u_int);
++    if (nameFromProcstat.isEmpty()) {
++        size_t len = sizeof(kp);
++        u_int mib_len = sizeof(mib)/sizeof(u_int);
+
+-    if (sysctl(mib, mib_len, &kp, &len, NULL, 0) < 0)
+-        return QString();
+-
++        if (sysctl(mib, mib_len, &kp, &len, NULL, 0) < 0)
++            return QString();
++    }
+ # if defined(Q_OS_OPENBSD) || defined(Q_OS_NETBSD)
+     if (kp.p_pid != pid)
+         return QString();
+     QString name = QFile::decodeName(kp.p_comm);
+ # else
+-    if (kp.ki_pid != pid)
++    QString name;
++    if (!nameFromProcstat.isEmpty()) {
++        QFileInfo fi(nameFromProcstat);
++        name = fi.fileName();
++    }
++    else if (kp.ki_pid != pid)
+         return QString();
+-    QString name = QFile::decodeName(kp.ki_comm);
++    else
++        name = QFile::decodeName(kp.ki_comm);
+ # endif
+     return name;
+--- src/corelib/io/io.pri.orig  2018-02-08 18:24:48 UTC
++++ src/corelib/io/io.pri
+@@ -178,6 +178,9 @@ win32 {
+             SOURCES += \
+                 io/qstandardpaths_unix.cpp \
+                 io/qstorageinfo_unix.cpp
++            freebsd {
++                LIBS += -lkvm -lprocstat
++            }
+         }
+
+         linux|if(qnx:qtConfig(inotify)) {
+--- src/corelib/io/qlockfile_unix.cpp.orig      2018-02-08 18:24:48 UTC
++++ src/corelib/io/qlockfile_unix.cpp
+@@ -75,6 +75,8 @@
+ #   include <sys/sysctl.h>
+ # if !defined(Q_OS_NETBSD)
+ #   include <sys/user.h>
++#   include <kvm.h>
++#   include <libprocstat.h>
+ # endif
+ #endif
+
+@@ -246,23 +248,44 @@ QString QLockFilePrivate::processNameByPid(qint64 pid)
+     struct kinfo_proc kp;
+     int mib[6] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, (int)pid, sizeof(struct kinfo_proc), 1 };
+ # else
++    QString nameFromProcstat;
++    kvm_t *kvm = kvm_open(nullptr, "/dev/null", nullptr, O_RDONLY, "");
++    if (kvm) {
++        int cnt;
++        struct kinfo_proc *kp = kvm_getprocs(kvm, KERN_PROC_PID, getpid(), &cnt);
++        if (kp) {
++            struct procstat *ps = procstat_open_sysctl();
++            char **argv = procstat_getargv(ps, kp, 0);
++            if (argv != nullptr && argv[0] != nullptr)
++                nameFromProcstat = QString::fromLocal8Bit(argv[0]);
++            procstat_close(ps);
++        }
++        kvm_close(kvm);
++    }
+     struct kinfo_proc kp;
+     int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, (int)pid };
+ # endif
+-    size_t len = sizeof(kp);
+-    u_int mib_len = sizeof(mib)/sizeof(u_int);
++    if (nameFromProcstat.isEmpty()) {
++        size_t len = sizeof(kp);
++        u_int mib_len = sizeof(mib)/sizeof(u_int);
+
+-    if (sysctl(mib, mib_len, &kp, &len, NULL, 0) < 0)
+-        return QString();
+-
++        if (sysctl(mib, mib_len, &kp, &len, NULL, 0) < 0)
++            return QString();
++    }
+ # if defined(Q_OS_OPENBSD) || defined(Q_OS_NETBSD)
+     if (kp.p_pid != pid)
+         return QString();
+     QString name = QFile::decodeName(kp.p_comm);
+ # else
+-    if (kp.ki_pid != pid)
++    QString name;
++    if (!nameFromProcstat.isEmpty()) {
++        QFileInfo fi(nameFromProcstat);
++        name = fi.fileName();
++    }
++    else if (kp.ki_pid != pid)
+         return QString();
+-    QString name = QFile::decodeName(kp.ki_comm);
++    else
++        name = QFile::decodeName(kp.ki_comm);
+ # endif
+     return name;