--- include/assimp/Hash.h.orig	2024-08-30 13:35:01.000000000 -0500
+++ include/assimp/Hash.h	2026-04-06 07:25:28.000000000 -0500
@@ -50,6 +50,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <cmath>
+#include <cstdlib>
 
 // ------------------------------------------------------------------------------------------------
 // Hashing function taken from