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Improve build system and autodetection.
* Make ./configure standalone, that's what people expect.
* Let people write a ./configure.local from scratch, not edit existing files.
* Autodetect wchar, sqlite3, and manpath and act accordingly.
* Autodetect the need for -L/usr/local/lib and -lutil.
* Get rid of config.h.p{re,ost}, let ./configure only write what's needed.
* Let ./configure write a Makefile.local snippet, that's quite flexible.

/*	$Id: test-wchar.c,v 1.1 2014/08/16 19:00:01 schwarze Exp $	*/
/*
 * Copyright (c) 2014 Ingo Schwarze <schwarze@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <locale.h>
#include <stdio.h>
#include <wchar.h>
#include <unistd.h>

int
main(void)
{
	wchar_t	 wc;
	int	 width;

	if (setlocale(LC_ALL, "") == NULL) {
		fputs("setlocale(LC_ALL, \"\") failed\n", stderr);
		return(1);
	}

	if (setlocale(LC_CTYPE, "en_US.UTF-8") == NULL) {
		fputs("setlocale(LC_CTYPE, \"en_US.UTF-8\") failed\n",
		    stderr);
		return(1);
	}

	if (sizeof(wchar_t) < 4) {
		fprintf(stderr, "wchar_t is only %zu bytes\n",
		    sizeof(wchar_t));
		return(1);
	}

	if ((width = wcwidth(L' ')) != 1) {
		fprintf(stderr, "wcwidth(L' ') returned %d\n", width);
		return(1);
	}

	dup2(STDERR_FILENO, STDOUT_FILENO);
	wc = L'*';
	if (putwchar(wc) != wc) {
		fputs("bad putwchar return value\n", stderr);
		return(1);
	}

	return(0);
}