From be217bf254aae009a4683204bcd97f97ee4d5ad4 Mon Sep 17 00:00:00 2001
From: Ali Caglayan <alizter@gmail.com>
Date: Sun, 28 Dec 2025 00:34:25 +0000
Subject: [PATCH] ITS#10420 LMDB: add support for Haiku

---
 libraries/liblmdb/mdb.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index cffd9cf059..626c0c3cf4 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -177,6 +177,9 @@ typedef SSIZE_T	ssize_t;
 # endif
 #elif defined(__ANDROID__)
 # define MDB_FDATASYNC		fsync
+#elif defined(__HAIKU__)
+# define MDB_USE_POSIX_SEM	1
+# define MDB_FDATASYNC		fsync
 #endif
 
 /* NetBSD does not define union semun in sys/sem.h */