@@ -, +, @@ 
---
 databases/lmdb/Makefile          |  1 +
 databases/lmdb/files/patch-mdb.c | 24 ++++++++++++++++++------
 2 files changed, 19 insertions(+), 6 deletions(-)
--- b/databases/lmdb/Makefile	
+++ b/databases/lmdb/Makefile	
@@ -4,6 +4,7 @@ 
 PORTNAME=	lmdb
 PORTVERSION=	0.9.22
 DISTVERSIONPREFIX=	${PORTNAME:tu}_
+PORTREVISION=	1
 PORTEPOCH=	1
 CATEGORIES=	databases
 
--- b/databases/lmdb/files/patch-mdb.c	
+++ b/databases/lmdb/files/patch-mdb.c	
@@ -1,11 +1,23 @@ 
---- mdb.c.orig	2017-06-01 16:51:10 UTC
+- NetBSD has fdatasync(2), see https://github.com/NetBSD/src/commit/e963c41c6fb9
+- OpenBSD has fdatasync(3), see https://github.com/openbsd/src/commit/aa96fc3dc04f
+- FreeBSD 11.0 has robust mutexes (see base r300043) and 11.1 has fdatasync(2) (see base r304977)
+
+--- mdb.c.orig	2018-03-22 15:23:05 UTC
 +++ mdb.c
-@@ -125,6 +125,8 @@ typedef SSIZE_T	ssize_t;
- # define MDB_FDATASYNC		fsync
- #elif defined(ANDROID)
+@@ -124,11 +124,12 @@ typedef SSIZE_T	ssize_t;
+ #include <resolv.h>	/* defines BYTE_ORDER on HPUX and Solaris */
+ #endif
+ 
+-#if defined(__APPLE__) || defined (BSD) || defined(__FreeBSD_kernel__)
+-# define MDB_USE_POSIX_SEM	1
++#if defined(__APPLE__) || defined(ANDROID) || defined(__DragonFly__) || (defined(__FreeBSD__) && __FreeBSD__ < 11)
  # define MDB_FDATASYNC		fsync
-+#elif defined(__FreeBSD_version) && __FreeBSD_version < 1101000
-+# define MDB_FDATASYNC		fsync
+-#elif defined(ANDROID)
+-# define MDB_FDATASYNC		fsync
++#endif
++
++#if defined(__APPLE__) || defined(__DragonFly__) || defined(__NetBSD__) || defined(__OpenBSD__) || (defined(__FreeBSD__) && __FreeBSD__ < 11)
++# define MDB_USE_POSIX_SEM	1
  #endif
  
  #ifndef _WIN32