Index: pcsx2/GS/Renderers/HW/GSTextureCache.cpp
--- pcsx2/GS/Renderers/HW/GSTextureCache.cpp.orig
+++ pcsx2/GS/Renderers/HW/GSTextureCache.cpp
@@ -22,6 +22,8 @@
 
 #ifdef __APPLE__
 #include <stdlib.h>
+#elif __OpenBSD__
+#include <stdlib.h>
 #else
 #include <malloc.h>
 #endif
