scc

 1#!/bin/sh
 2
 3trap 'rm -f $$.tmp' EXIT
 4trap 'exit $?' HUP INT TERM
 5
 6awk '
 7/^#define[ \t]*E/{
 8	str = ""
 9	for (i = 5; i < NF; i++)
10		str = str " " $i
11	sub(/^ /, "", str)
12	errstr[$2] = str
13}
14
15END {
16	print "#include <errno.h>\n"
17	print "char *const _sys_errlist[] = {"
18	for (i in errstr)
19		printf "\t%-20.20s = \"%s\",\n", "[" i "]", errstr[i]
20
21	print "};"
22}' $@ > $$.tmp && mv $$.tmp _sys_errlist.c