try this instead-fix android compile issue

src/drivers/libretro/libretro.c

@@ -165,6 +165,13 @@ void FCEUD_Message(char *s)
    log_cb.log(RETRO_LOG_INFO, "%s", s);
 }
 
+void FCEUD_DispMessage(char *m)
+{  struct retro_message msg;
+   msg.msg = m;
+   msg.frames = 180;
+   environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE, &msg);
+}
+
 void FCEUD_NetworkClose(void)
 { }
 

src/video.c

@@ -89,13 +89,7 @@ void FCEU_DispMessage(char *format, ...)
    va_end(ap);
 
    howlong = 180;
-#ifdef __LIBRETRO__
-   struct retro_message msg;
-
-   msg.msg = errmsg;
-   msg.frames = howlong;
-   environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE, &msg);
-#endif
+   FCEUD_DispMessage(errmsg);
 }
 
 void FCEU_ResetMessages(void)