http://roy.marples.name/projects/openrc/ticket/177

--- src/rc/rc.c.orig	2009-06-20 08:14:19.018885584 +0200
+++ src/rc/rc.c	2009-06-20 08:13:52.000000000 +0200
@@ -45,6 +45,9 @@ const char rc_copyright[] = "Copyright (
 
 #ifdef __linux__
 #  include <asm/setup.h> /* for COMMAND_LINE_SIZE */
+#  ifndef COMMAND_LINE_SIZE
+#    define COMMAND_LINE_SIZE	2048
+#  endif
 #endif
 
 #include <errno.h>