Build: Fix MacOS compilation

10 months ago · 597382e989
parent ed0ee16bf9
commit 597382e989
1 changed files with 1 additions and 0 deletions
--- a/src/os/macosx/macos.mm
+++ b/src/os/macosx/macos.mm
@ -15,6 +15,7 @@
 #include "../../fileio_func.h"
 #include <pthread.h>
 #include <array>
+#include <optional>

 #define Rect  OTTDRect
 #define Point OTTDPoint