diff -ur daemontools-0.76.old/src/error.h daemontools-0.76/src/error.h
--- daemontools-0.76.old/src/error.h	2001-07-12 11:49:49.000000000 -0500
+++ daemontools-0.76/src/error.h	2003-01-09 21:52:01.000000000 -0600
@@ -3,7 +3,7 @@
 #ifndef ERROR_H
 #define ERROR_H
 
-extern int errno;
+#include <errno.h>
 
 extern int error_intr;
 extern int error_nomem;
