--- locale.cpp~	2023-04-14 13:45:50.000000000 -0500
+++ locale.cpp	2023-10-24 11:28:55.596502687 -0500
@@ -23,6 +23,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #if defined(_MSC_VER) || defined(__WIN32)
 #include <windows.h>