fix haiku

core/sys/posix/pthread.odin

@@ -1,4 +1,4 @@
-#+build linux, darwin, netbsd, openbsd, freebsd
+#+build linux, darwin, netbsd, openbsd, freebsd, haiku
 package posix
 
 import "core:c"
@@ -554,6 +554,56 @@ when ODIN_OS == .Darwin {
 		sched_priority: c.int,     /* [PSX] process or thread execution scheduling priority */
 	}
 
+} else when ODIN_OS == .Haiku {
+
+	PTHREAD_CANCEL_ASYNCHRONOUS :: 2
+	PTHREAD_CANCEL_DEFERRED     :: 0
+
+	PTHREAD_CANCEL_DISABLE      :: 1
+	PTHREAD_CANCEL_ENABLE       :: 0
+
+	PTHREAD_CANCELED :: rawptr(uintptr(1))
+
+	PTHREAD_CREATE_DETACHED :: 0x1
+	PTHREAD_CREATE_JOINABLE :: 0
+
+	PTHREAD_EXPLICIT_SCHED :: 0
+	PTHREAD_INHERIT_SCHED  :: 0x4
+
+	PTHREAD_PRIO_INHERIT :: 1
+	PTHREAD_PRIO_NONE    :: 0
+	PTHREAD_PRIO_PROTECT :: 2
+
+	PTHREAD_PROCESS_SHARED  :: 1
+	PTHREAD_PROCESS_PRIVATE :: 0
+
+	PTHREAD_SCOPE_PROCESS   :: 0
+	PTHREAD_SCOPE_SYSTEM    :: 0x2
+
+	pthread_t       :: distinct rawptr
+	pthread_attr_t  :: distinct rawptr
+	pthread_key_t   :: distinct c.int
+	
+	pthread_mutex_t :: struct {
+		flags:       u32,
+		lock:        i32,
+		unused:      i32,
+		owner:       i32,
+		owner_count: i32,
+	}
+	
+	pthread_cond_t :: struct {
+		flags:        u32,
+		unused:       i32,
+		mutex:        ^pthread_mutex_t,
+		waiter_count: i32,
+		lock:         i32,
+	}
+
+	sched_param :: struct {
+		sched_priority: c.int,     /* [PSX] process or thread execution scheduling priority */
+	}
+
 } else when ODIN_OS == .Linux {
 
 	PTHREAD_CANCEL_DEFERRED     :: 0