1#! /bin/sh
2# $Id: MKncurses_def.sh,v 1.4 2020/02/02 23:34:34 tom Exp $
3##############################################################################
4# Copyright 2020 Thomas E. Dickey                                            #
5# Copyright 2000,2003 Free Software Foundation, Inc.                         #
6#                                                                            #
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8# copy of this software and associated documentation files (the "Software"), #
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10# the rights to use, copy, modify, merge, publish, distribute, distribute    #
11# with modifications, sublicense, and/or sell copies of the Software, and to #
12# permit persons to whom the Software is furnished to do so, subject to the  #
13# following conditions:                                                      #
14#                                                                            #
15# The above copyright notice and this permission notice shall be included in #
16# all copies or substantial portions of the Software.                        #
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20# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    #
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30##############################################################################
31#
32# MKncurses_def.sh -- generate fallback definitions for ncurses_cfg.h
33#
34# Author: Thomas E. Dickey 2000
35#
36# Given the choice between constructs such as
37#
38#	#if defined(foo) && foo
39#	#if foo
40#
41# we chose the latter.  It is guaranteed by the language standard, and there
42# appear to be no broken compilers that do not honor that detail.  But some
43# people want to use gcc's -Wundef option (corresponding to one of the less
44# useful features in Watcom's compiler) to check for misspellings.  So we
45# generate a set of fallback definitions to quiet the warnings without making
46# the code ugly.
47#
48DEFS="${1-ncurses_defs}"
49cat <<EOF
50/*
51 * This file is generated by $0
52 */
53
54#ifndef NC_DEFINE_H
55#define NC_DEFINE_H 1
56
57EOF
58
59${AWK-awk} <$DEFS '
60!/^[@#]/ {
61	if ( NF == 1 )
62	{
63		print "#ifndef", $1
64		print "#define", $1, "0"
65		print "#endif"
66		print ""
67	} else if ( NF != 0 ) {
68		print "#ifndef", $1
69		printf "#define"
70		for (n = 1; n <= NF; n++) {
71			printf " %s", $n
72		}
73		print ""
74		print "#endif"
75		print ""
76	}
77}
78END	{
79print "#endif /* NC_DEFINE_H */"
80	}
81'
82