mesa: fix glthread marshal build issues on platforms without PTHREAD

src/mesa/main/glthread.h

@@ -24,18 +24,19 @@
 #ifndef _GLTHREAD_H
 #define _GLTHREAD_H
 
+#include "main/mtypes.h"
+
+/* Command size is a number of bytes stored in a short. */
+#define MARSHAL_MAX_CMD_SIZE 65535
+
 #ifdef HAVE_PTHREAD
 
 #include <inttypes.h>
 #include <stdbool.h>
 #include <pthread.h>
-#include "main/mtypes.h"
 
 enum marshal_dispatch_cmd_id;
 
-/* Command size is a number of bytes stored in a short. */
-#define MARSHAL_MAX_CMD_SIZE 65535
-
 struct glthread_state
 {
    /** The worker thread that asynchronously processes our GL commands. */
@@ -145,5 +146,10 @@ _mesa_glthread_restore_dispatch(struct gl_context *ctx)
 {
 }
 
+static inline void
+_mesa_glthread_flush_batch(struct gl_context *ctx)
+{
+}
+
 #endif /* !HAVE_PTHREAD */
 #endif /* _GLTHREAD_H*/