Define our own container_of as well
Don't rely on libwayland-client/server to define this for us.
diff --git a/src/compositor.h b/src/compositor.h
index 19ab11e..3176bfd 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -39,6 +39,10 @@
#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
+#define container_of(ptr, type, member) ({ \
+ const __typeof__( ((type *)0)->member ) *__mptr = (ptr); \
+ (type *)( (char *)__mptr - offsetof(type,member) );})
+
struct weston_transform {
struct weston_matrix matrix;
struct wl_list link;