diff -up read-edid-1.4.1/lrmi.c~ read-edid-1.4.1/lrmi.c
--- read-edid-1.4.1/lrmi.c~	2008-08-22 09:26:22.000000000 -0400
+++ read-edid-1.4.1/lrmi.c	2008-08-22 09:41:49.000000000 -0400
@@ -168,6 +168,13 @@ LRMI_free_real(void *m)
 		}
 	}
 
+#ifndef TF_MASK
+#define TF_MASK X86_EFLAGS_TF
+#define IF_MASK X86_EFLAGS_IF
+#define IOPL_MASK X86_EFLAGS_IOPL
+#define VIF_MASK X86_EFLAGS_VIF
+#define VIP_MASK X86_EFLAGS_VIP
+#endif
 
 #define DEFAULT_VM86_FLAGS 	(IF_MASK | IOPL_MASK)
 #define DEFAULT_STACK_SIZE 	0x1000