$OpenBSD: patch-source_include_platform_aclinux_h,v 1.3 2017/03/18 21:37:55 sthen Exp $
--- source/include/platform/aclinux.h.orig	Fri Mar  3 17:25:54 2017
+++ source/include/platform/aclinux.h	Sat Mar 18 21:30:14 2017
@@ -167,6 +167,10 @@
 #define ACPI_USE_SYSTEM_CLIBRARY
 #define ACPI_USE_DO_WHILE_0
 
+#ifdef __OpenBSD__
+#define ACPI_USE_ALTERNATE_TIMEOUT
+#endif
+
 
 #ifdef __KERNEL__
 
