libweston: move TYPEVERIFY macro into shared

This will be useful in the test harness macros.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>

libweston/timeline.h

@@ -33,6 +33,8 @@
 #include <libweston/weston-log.h>
 #include <wayland-server-core.h>
 
+#include "shared/helpers.h"
+
 enum timeline_type {
 	TLT_END = 0,
 	TLT_OUTPUT,
@@ -67,11 +69,6 @@ struct weston_timeline_subscription_object {
 	struct wl_listener destroy_listener;
 };
 
-#define TYPEVERIFY(type, arg) ({		\
-	typeof(arg) tmp___ = (arg);		\
-	(void)((type)0 == tmp___);		\
-	tmp___; })
-
 /**
  * Should be used as the last argument when using TL_POINT macro
  *

shared/helpers.h

@@ -134,6 +134,14 @@ extern "C" {
 # endif
 #endif
 
+/** Ensure argument is of given type */
+#ifndef TYPEVERIFY
+#define TYPEVERIFY(type, arg) ({		\
+	typeof(arg) tmp___ = (arg);		\
+	(void)((type)0 == tmp___);		\
+	tmp___; })
+#endif
+
 #ifdef  __cplusplus
 }
 #endif