1 #
2 # ngIRCd -- The Next Generation IRC Daemon
3 # Copyright (c)2001-2014 Alexander Barton (alex@barton.de) and Contributors
4 #
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
9 # Please read the file COPYING, README and AUTHORS for more information.
10 #
11 
12 define(VERSION_ID,esyscmd([
13 	V=`git describe 2>/dev/null | sed -e 's/rel-//g' | sed -e 's/-/~/'`;
14 	[ -z "$V" -a -r configure ] \
15 		&& V=`grep "PACKAGE_STRING=" configure | cut -d"'" -f2 | cut -d' ' -f2`
16 	( [ -n "$V" ] && echo "$V" || echo "??" ) | tr -d '\n';
17 ]))
18 
19 m4_ifdef([AM_SILENT_RULES],
20 	[m4_define([ng_color_tests], [color-tests])],
21 	[m4_define([ng_color_tests], [])])
22 
23 # -- Initialisation --
24 
25 AC_PREREQ([2.61])
26 AC_INIT([ngIRCd],[VERSION_ID],[ngircd-ml@ngircd.barton.de],[ngircd],[http://ngircd.barton.de/])
27 
28 AC_CONFIG_SRCDIR([src/ngircd/ngircd.c])
29 AC_CONFIG_HEADER([src/config.h])
30 AC_CANONICAL_HOST
31 
32 AM_INIT_AUTOMAKE([-Wall 1.10 ]ng_color_tests)
33 
34 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
35 
36 # -- Templates for config.h --
37 
38 AH_TEMPLATE([DEBUG], [Define if debug-mode should be enabled])
39 AH_TEMPLATE([HAVE_sockaddr_in_len], [Define if sockaddr_in.sin_len exists])
40 AH_TEMPLATE([HAVE_socklen_t], [Define if socklen_t exists])
41 AH_TEMPLATE([ICONV], [Define if libiconv can be used, e.g. for CHARCONV])
42 AH_TEMPLATE([IDENTAUTH], [Define if the server should do IDENT requests])
43 AH_TEMPLATE([IRCPLUS], [Define if IRC+ protocol should be used])
44 AH_TEMPLATE([PAM], [Define if PAM should be used])
45 AH_TEMPLATE([SNIFFER], [Define if IRC sniffer should be enabled])
46 AH_TEMPLATE([STRICT_RFC], [Define if ngIRCd should behave strict RFC compliant])
47 AH_TEMPLATE([SYSLOG], [Define if syslog should be used for logging])
48 AH_TEMPLATE([TCPWRAP], [Define if TCP wrappers should be used])
49 AH_TEMPLATE([WANT_IPV6], [Define if IPV6 protocol should be enabled])
50 AH_TEMPLATE([ZLIB], [Define if zlib compression should be enabled])
51 
52 AH_TEMPLATE([HOST_OS], [Target operating system name])
53 AH_TEMPLATE([HOST_VENDOR], [Target system vendor])
54 AH_TEMPLATE([HOST_CPU], [Target CPU name])
55 
56 # -- C Compiler --
57 
58 AC_PROG_CC
59 AC_PROG_CC_STDC
60 
61 # -- Helper programs --
62 
63 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
64 
65 AC_PROG_AWK
66 AC_PROG_INSTALL
67 AC_PROG_LN_S
68 AC_PROG_MAKE_SET
69 AC_PROG_MKDIR_P
70 AC_PROG_RANLIB
71 
72 # -- Compiler Features --
73 
74 AC_C_CONST
75 AC_C_INLINE
76 __ng_PROTOTYPES__
77 
78 # -- Function Definitions --
79 
80 AC_DEFUN([GCC_STACK_PROTECT_CC],[
81 	ssp_cc=yes
82 	# Use -fstack-protector-all for the test to enfoce the use of the
83 	# guard variable
84 	AC_MSG_CHECKING([whether ${CC} accepts -fstack-protector])
85 	ssp_old_cflags="$CFLAGS"
86 	CFLAGS="$CFLAGS -fstack-protector-all"
87 	AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],[],[ssp_cc=no])
88 	echo $ssp_cc
89 	CFLAGS="$ssp_old_cflags"
90 	if test "X$ssp_cc" = "Xyes"; then
91 		CFLAGS="$CFLAGS -fstack-protector"
92 		AC_DEFINE([ENABLE_SSP_CC], 1, [Define if SSP C support is enabled.])
93 	fi
94 ])
95 
96 AC_DEFUN([WORKING_GETADDRINFO],[
97 	AC_CHECK_FUNCS([getaddrinfo],[
98 		AC_MSG_CHECKING([whether getaddrinfo() works])
99 		AC_RUN_IFELSE([AC_LANG_SOURCE([[
100 #include <stdio.h>
101 #include <sys/types.h>
102 #include <sys/socket.h>
103 #include <netdb.h>
104 int
105 main(int argc, char **argv)
106 {
107 	struct addrinfo hints, *ai;
108 	memset(&hints, 0, sizeof(hints));
109 	hints.ai_flags = AI_PASSIVE;
110 	hints.ai_socktype = SOCK_STREAM;
111 	hints.ai_family = PF_UNSPEC;
112 	if(getaddrinfo(NULL, "0", &hints, &ai) != 0)
113 		return 1;
114 	return 0;
115 }
116 		]])],[
117 		AC_DEFINE([HAVE_WORKING_GETADDRINFO], 1, [getaddrinfo(0)])
118 		AC_MSG_RESULT(yes)
119 		],[
120 		AC_MSG_RESULT(no)
121 		],[
122 		AC_MSG_RESULT(no)
123 		])
124 	])
125 ])
126 
127 # -- Hard coded system and compiler dependencies/features/options ... --
128 
129 if test "$GCC" = "yes"; then
130 	# We are using the GNU C compiler. Good!
131 	CFLAGS="$CFLAGS -pipe -W -Wall -Wpointer-arith -Wstrict-prototypes"
132 
133 	GCC_STACK_PROTECT_CC
134 fi
135 
136 case "$host_os" in
137 	hpux*)
138 		# This is HP/UX, we need to define _XOPEN_SOURCE_EXTENDED
139 		# (tested with HP/UX 11.11)
140 		CFLAGS="$CFLAGS -D_XOPEN_SOURCE_EXTENDED"
141 		;;
142 esac
143 
144 # Add additional CFLAGS, eventually specified on the command line:
145 test -n "$CFLAGS_ADD" && CFLAGS="$CFLAGS $CFLAGS_ADD"
146 
147 CFLAGS="$CFLAGS -DSYSCONFDIR='\"\$(sysconfdir)\"' -DDOCDIR='\"\$(docdir)\"'"
148 
149 # -- Headers --
150 
151 AC_HEADER_STDC
152 AC_HEADER_SYS_WAIT
153 AC_HEADER_TIME
154 
155 # Required header files
156 AC_CHECK_HEADERS([ \
157 	fcntl.h netdb.h netinet/in.h stdlib.h string.h \
158 	strings.h sys/socket.h sys/time.h sys/types.h unistd.h \
159 	],,AC_MSG_ERROR([required C header missing!]))
160 
161 # Optional header files
162 AC_CHECK_HEADERS_ONCE([ \
163 	arpa/inet.h inttypes.h malloc.h netinet/in_systm.h netinet/ip.h \
164 	stdbool.h stddef.h stdint.h varargs.h \
165 	])
166 
167 # -- Datatypes --
168 
169 AC_MSG_CHECKING(whether socklen_t exists)
170 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
171 #include <sys/types.h>
172 #include <sys/socket.h>
173 	]],[[
174 	socklen_t a, b;
175 	a = 2; b = 4; a += b;
176 	]])],[
177 	AC_DEFINE(HAVE_socklen_t) AC_MSG_RESULT(yes)
178 	],[
179 	AC_MSG_RESULT(no)
180 ])
181 
182 AC_TYPE_PID_T
183 AC_TYPE_SIZE_T
184 AC_TYPE_SSIZE_T
185 AC_TYPE_UID_T
186 AC_TYPE_UINT16_T
187 AC_TYPE_UINT32_T
188 AC_TYPE_UINT8_T
189 
190 AC_CHECK_MEMBER([struct sockaddr_in.sin_len], AC_DEFINE(HAVE_sockaddr_in_len),,
191  [#include <arpa/inet.h>])
192 
193 # -- Libraries --
194 
195 # memmove: A/UX libUTIL
196 AC_SEARCH_LIBS([memmove], [UTIL], [], [
197 	AC_MSG_ERROR([unable to find the memmove() function])
198 ])
199 # gethostbyname: Solaris libnsl
200 AC_SEARCH_LIBS([gethostbyname], [bind nsl network], [], [
201 	AC_MSG_ERROR([unable to find the gethostbyname() function])
202 ])
203 # bind: SVR4 libsocket
204 AC_SEARCH_LIBS([bind], [socket network], [], [
205 	AC_MSG_ERROR([unable to find the bind() function])
206 ])
207 
208 # -- Functions --
209 
210 AC_FUNC_FORK
211 AC_FUNC_STRFTIME
212 
213 # Required functions
214 AC_CHECK_FUNCS([ \
215 	alarm dup2 endpwent gethostbyaddr gethostbyname gethostname \
216 	gettimeofday inet_ntoa memmove memset setsid socket strcasecmp \
217 	strchr strcspn strerror strncasecmp strrchr strspn strstr \
218 	],,
219 	AC_MSG_ERROR([required function missing!]))
220 
221 # Optional functions
222 AC_CHECK_FUNCS_ONCE([
223 	arc4random arc4random_stir gai_strerror getnameinfo inet_aton \
224 	setgroups sigaction sigprocmask snprintf strdup strlcat strlcpy \
225 	strndup strtok_r unsetenv vsnprintf waitpid])
226 
227 WORKING_GETADDRINFO
228 
229 # -- Configuration options --
230 
231 # use syslog?
232 
233 x_syslog_on=no
234 AC_ARG_WITH(syslog,
235 	AS_HELP_STRING([--without-syslog],
236 		       [disable syslog (autodetected by default)]),
237 	[	if test "$withval" != "no"; then
238 			if test "$withval" != "yes"; then
239 				CFLAGS="-I$withval/include $CFLAGS"
240 				CPPFLAGS="-I$withval/include $CPPFLAGS"
241 				LDFLAGS="-L$withval/lib $LDFLAGS"
242 			fi
243 			AC_SEARCH_LIBS([syslog], [be], [x_syslog_on=yes], [
244 				AC_MSG_ERROR([Can't enable syslog!])
245 			])
246 		fi
247 	],
248 	[	AC_SEARCH_LIBS([syslog], [be], [x_syslog_on=yes])
249 	]
250 )
251 if test "$x_syslog_on" = "yes"; then
252 	AC_DEFINE(SYSLOG, 1)
253 	AC_CHECK_HEADERS(syslog.h,,AC_MSG_ERROR([required C header missing!]))
254 fi
255 
256 # use zlib compression?
257 
258 x_zlib_on=no
259 AC_ARG_WITH(zlib,
260 	AS_HELP_STRING([--without-zlib],
261 		       [disable zlib compression (autodetected by default)]),
262 	[	if test "$withval" != "no"; then
263 			if test "$withval" != "yes"; then
264 				CFLAGS="-I$withval/include $CFLAGS"
265 				CPPFLAGS="-I$withval/include $CPPFLAGS"
266 				LDFLAGS="-L$withval/lib $LDFLAGS"
267 			fi
268 			AC_CHECK_LIB(z, deflate)
269 			AC_CHECK_FUNCS(deflate, x_zlib_on=yes,
270 				AC_MSG_ERROR([Can't enable zlib!])
271 			)
272 		fi
273 	],
274 	[	AC_CHECK_LIB(z, deflate)
275 		AC_CHECK_FUNCS(deflate, x_zlib_on=yes)
276 	]
277 )
278 if test "$x_zlib_on" = "yes"; then
279 	AC_DEFINE(ZLIB, 1)
280 	AC_CHECK_HEADERS(zlib.h,,AC_MSG_ERROR([required C header missing!]))
281 fi
282 
283 # detect which IO API to use:
284 
285 x_io_backend=none
286 
287 AC_ARG_WITH(select,
288 	AS_HELP_STRING([--without-select],
289 		       [disable select IO support (autodetected by default)]),
290 	[	if test "$withval" != "no"; then
291 			if test "$withval" != "yes"; then
292 				CFLAGS="-I$withval/include $CFLAGS"
293 				CPPFLAGS="-I$withval/include $CPPFLAGS"
294 				LDFLAGS="-L$withval/lib $LDFLAGS"
295 			fi
296 			AC_CHECK_FUNCS(select, x_io_select=yes,
297 				AC_MSG_ERROR([Can't enable select IO support!])
298 			)
299 		fi
300 	],
301 	[
302 		AC_CHECK_FUNCS(select, x_io_select=yes)
303 	]
304 )
305 
306 AC_ARG_WITH(poll,
307 	AS_HELP_STRING([--without-poll],
308 		       [disable poll support (autodetected by default)]),
309 	[	if test "$withval" != "no"; then
310 			if test "$withval" != "yes"; then
311 				CFLAGS="-I$withval/include $CFLAGS"
312 				CPPFLAGS="-I$withval/include $CPPFLAGS"
313 				LDFLAGS="-L$withval/lib $LDFLAGS"
314 			fi
315 			AC_CHECK_FUNCS(poll, [
316 				AC_CHECK_HEADERS(poll.h,
317 					x_io_backend=poll\(\),
318 					AC_MSG_ERROR(
319 					     [Can't enable poll IO support!])
320 				)
321 			], [
322 				AC_MSG_ERROR([Can't enable poll IO support!])
323 			])
324 		fi
325 	],
326 	[
327 		AC_CHECK_FUNCS(poll, [
328 			AC_CHECK_HEADERS(poll.h, x_io_backend=poll\(\))
329 		])
330 	]
331 )
332 
333 AC_ARG_WITH(devpoll,
334 	AS_HELP_STRING([--without-devpoll],
335 		       [disable /dev/poll IO support (autodetected by default)]),
336 	[	if test "$withval" != "no"; then
337 			if test "$withval" != "yes"; then
338 				CFLAGS="-I$withval/include $CFLAGS"
339 				CPPFLAGS="-I$withval/include $CPPFLAGS"
340 				LDFLAGS="-L$withval/lib $LDFLAGS"
341 			fi
342 
343 				AC_CHECK_HEADERS(sys/devpoll.h,,AC_MSG_ERROR([required C header missing!]))
344 		fi
345 	],
346 	[
347 		AC_CHECK_HEADERS(sys/devpoll.h, x_io_backend=/dev/poll)
348 	]
349 )
350 
351 AC_ARG_WITH(epoll,
352 	AS_HELP_STRING([--without-epoll],
353 		       [disable epoll IO support (autodetected by default)]),
354 	[	if test "$withval" != "no"; then
355 			if test "$withval" != "yes"; then
356 				CFLAGS="-I$withval/include $CFLAGS"
357 				CPPFLAGS="-I$withval/include $CPPFLAGS"
358 				LDFLAGS="-L$withval/lib $LDFLAGS"
359 			fi
360 			AC_CHECK_FUNCS(epoll_create, x_io_epoll=yes,
361 				AC_MSG_ERROR([Can't enable epoll IO support!])
362 			)
363 		fi
364 	],
365 	[
366 		AC_CHECK_FUNCS(epoll_create, x_io_epoll=yes)
367 	]
368 )
369 
370 AC_ARG_WITH(kqueue,
371 	AS_HELP_STRING([--without-kqueue],
372 		       [disable kqueue IO support (autodetected by default)]),
373 	[	if test "$withval" != "no"; then
374 			if test "$withval" != "yes"; then
375 				CFLAGS="-I$withval/include $CFLAGS"
376 				CPPFLAGS="-I$withval/include $CPPFLAGS"
377 				LDFLAGS="-L$withval/lib $LDFLAGS"
378 			fi
379 			AC_CHECK_FUNCS(kqueue, x_io_backend=kqueue\(\),
380 				AC_MSG_ERROR([Can't enable kqueue IO support!])
381 			)
382 		fi
383 	],
384 	[
385 		AC_CHECK_FUNCS(kqueue, x_io_backend=kqueue\(\))
386 	]
387 )
388 
389 if test "$x_io_epoll" = "yes" -a "$x_io_select" = "yes"; then
390 	# when epoll() and select() are available, we'll use both!
391 	x_io_backend="epoll(), select()"
392 else
393 	if test "$x_io_epoll" = "yes"; then
394 		# we prefere epoll() if it is available
395 		x_io_backend="epoll()"
396 	else
397 		if test "$x_io_select" = "yes" -a "$x_io_backend" = "none"; then
398 			# we'll use select, when available and no "better"
399 			# interface has been detected ...
400 			x_io_backend="select()"
401 		fi
402 	fi
403 fi
404 
405 if test "$x_io_backend" = "none"; then
406 	AC_MSG_ERROR([No useable IO API activated/found!?])
407 fi
408 
409 # use SSL?
410 
411 AC_ARG_WITH(openssl,
412 	AS_HELP_STRING([--with-openssl],
413 		       [enable SSL support using OpenSSL]),
414 	[	if test "$withval" != "no"; then
415 			if test "$withval" != "yes"; then
416 				CFLAGS="-I$withval/include $CFLAGS"
417 				CPPFLAGS="-I$withval/include $CPPFLAGS"
418 				LDFLAGS="-L$withval/lib $LDFLAGS"
419 			fi
420 			AC_CHECK_LIB(crypto, BIO_s_mem)
421 			AC_CHECK_LIB(ssl, SSL_new)
422 			AC_CHECK_FUNCS(SSL_new, x_ssl_openssl=yes,
423 				AC_MSG_ERROR([Can't enable openssl])
424 			)
425 		fi
426 	]
427 )
428 
429 AC_ARG_WITH(gnutls,
430 	AS_HELP_STRING([--with-gnutls],
431 		       [enable SSL support using gnutls]),
432 	[	if test "$withval" != "no"; then
433 			if test "$withval" != "yes"; then
434 				CFLAGS="-I$withval/include $CFLAGS"
435 				CPPFLAGS="-I$withval/include $CPPFLAGS"
436 				LDFLAGS="-L$withval/lib $LDFLAGS"
437 			fi
438 			AC_CHECK_LIB(gnutls, gnutls_global_init)
439 			AC_CHECK_FUNCS(gnutls_global_init, x_ssl_gnutls=yes,
440 				AC_MSG_ERROR([Can't enable gnutls])
441 			)
442 		fi
443 	]
444 )
445 
446 x_ssl_lib="no"
447 if test "$x_ssl_gnutls" = "yes"; then
448 	if test "$x_ssl_openssl" = "yes";then
449 		AC_MSG_ERROR([Cannot enable both gnutls and openssl])
450 	fi
451 	x_ssl_lib=gnutls
452 fi
453 if test "$x_ssl_openssl" = "yes"; then
454 	x_ssl_lib=openssl
455 fi
456 
457 # use TCP wrappers?
458 
459 x_tcpwrap_on=no
460 AC_ARG_WITH(tcp-wrappers,
461 	AS_HELP_STRING([--with-tcp-wrappers],
462 		       [enable TCP wrappers support]),
463 	[	if test "$withval" != "no"; then
464 			if test "$withval" != "yes"; then
465 				CFLAGS="-I$withval/include $CFLAGS"
466 				CPPFLAGS="-I$withval/include $CPPFLAGS"
467 				LDFLAGS="-L$withval/lib $LDFLAGS"
468 			fi
469 			AC_MSG_CHECKING(for hosts_access)
470 			saved_LIBS="$LIBS"
471 			LIBS="-lwrap $LIBS"
472 			LIBS_END="-lwrap $LIBS_END"
473 			AC_LINK_IFELSE([AC_LANG_PROGRAM([[
474 #include <sys/types.h>
475 #include <sys/socket.h>
476 #include <tcpd.h>
477 int allow_severity = 0;
478 int deny_severity = 0;
479 				]],[[
480 				tcpd_warn("link test");
481 				]])],[
482 				AC_MSG_RESULT(yes)
483 				AC_DEFINE(TCPWRAP, 1)
484 				x_tcpwrap_on=yes
485 				],[
486 				AC_MSG_RESULT(no)
487 				AC_MSG_ERROR([Can't enable TCP wrappers!])
488 			])
489 			LIBS="$saved_LIBS"
490 		fi
491 	]
492 )
493 
494 # do IDENT requests using libident?
495 
496 x_identauth_on=no
497 AC_ARG_WITH(ident,
498 	AS_HELP_STRING([--with-ident],
499 		       [enable "IDENT" ("AUTH") protocol support]),
500 	[	if test "$withval" != "no"; then
501 			if test "$withval" != "yes"; then
502 				CFLAGS="-I$withval/include $CFLAGS"
503 				CPPFLAGS="-I$withval/include $CPPFLAGS"
504 				LDFLAGS="-L$withval/lib $LDFLAGS"
505 			fi
506 			AC_CHECK_LIB(ident, ident_id)
507 			AC_CHECK_FUNCS(ident_id, x_identauth_on=yes,
508 				AC_MSG_ERROR([Can't enable IDENT support!])
509 			)
510 		fi
511 	]
512 )
513 if test "$x_identauth_on" = "yes"; then
514 	AC_DEFINE(IDENTAUTH, 1)
515 	AC_CHECK_HEADERS(ident.h,,AC_MSG_ERROR([required C header missing!]))
516 fi
517 
518 # compile in PAM support?
519 
520 x_pam_on=no
521 AC_ARG_WITH(pam,
522 	AS_HELP_STRING([--with-pam],
523 		       [enable user authentication using PAM]),
524 	[	if test "$withval" != "no"; then
525 			if test "$withval" != "yes"; then
526 				CFLAGS="-I$withval/include $CFLAGS"
527 				CPPFLAGS="-I$withval/include $CPPFLAGS"
528 				LDFLAGS="-L$withval/lib $LDFLAGS"
529 			fi
530 			AC_CHECK_LIB(pam, pam_authenticate)
531 			AC_CHECK_FUNCS(pam_authenticate, x_pam_on=yes,
532 				AC_MSG_ERROR([Can't enable PAM support!])
533 			)
534 		fi
535 	]
536 )
537 if test "$x_pam_on" = "yes"; then
538 	AC_DEFINE(PAM, 1)
539 	AC_CHECK_HEADERS(security/pam_appl.h,pam_ok=yes)
540 	if test "$pam_ok" != "yes"; then
541 		AC_CHECK_HEADERS(pam/pam_appl.h,pam_ok=yes,
542 			AC_MSG_ERROR([required C header missing!]))
543 	fi
544 fi
545 
546 # compile in IRC+ protocol support?
547 
548 x_ircplus_on=yes
549 AC_ARG_ENABLE(ircplus,
550 	AS_HELP_STRING([--disable-ircplus],
551 		       [disable IRC+ protocol]),
552 	if test "$enableval" = "no"; then x_ircplus_on=no; fi
553 )
554 if test "$x_ircplus_on" = "yes"; then
555 	AC_DEFINE(IRCPLUS, 1)
556 
557 	# Compile in iconv support?
558 	# We only check for it when IRC+ is enabled, because the IRC+ command
559 	# CHARCONV is the only function depending on it.
560 	x_iconv_on=no
561 	AC_ARG_WITH(iconv,
562 		AS_HELP_STRING([--with-iconv],
563 			       [enable character conversion using libiconv]),
564 		[ if test "$withval" != "no"; then
565 			if test "$withval" != "yes"; then
566 				CFLAGS="-I$withval/include $CFLAGS"
567 				CPPFLAGS="-I$withval/include $CPPFLAGS"
568 				LDFLAGS="-L$withval/lib $LDFLAGS"
569 			fi
570 			AC_CHECK_LIB(iconv, iconv_open)
571 			AC_CHECK_FUNCS(iconv_open, x_iconv_on=yes)
572 			if test "$x_iconv_on" != "yes"; then
573 				AC_CHECK_LIB(iconv, libiconv_open)
574 				AC_CHECK_FUNCS(libiconv_open, x_iconv_on=yes)
575 			fi
576 			if test "$x_iconv_on" != "yes"; then
577 				AC_MSG_ERROR([Can't enable libiconv support!])
578 			fi
579 		fi ]
580 	)
581 	if test "$x_iconv_on" = "yes"; then
582 		AC_DEFINE(ICONV, 1)
583 	fi
584 fi
585 
586 # enable support for IPv6?
587 x_ipv6_on=no
588 AC_ARG_ENABLE(ipv6,
589 	AS_HELP_STRING([--enable-ipv6],
590 		       [enable IPv6 protocol support]),
591 	if test "$enableval" = "yes"; then x_ipv6_on=yes; fi
592 )
593 if test "$x_ipv6_on" = "yes"; then
594 	# getaddrinfo() and getnameinfo() are optional when not compiling
595 	# with IPv6 support, but are required for IPv6 to work!
596 	AC_CHECK_FUNCS([ \
597 		getaddrinfo getnameinfo \
598 		],,AC_MSG_ERROR([required function missing for IPv6 support!]))
599 	AC_DEFINE(WANT_IPV6, 1)
600 fi
601 
602 # compile in IRC "sniffer"?
603 
604 x_sniffer_on=no; x_debug_on=no
605 AC_ARG_ENABLE(sniffer,
606 	AS_HELP_STRING([--enable-sniffer],
607 		       [enable IRC traffic sniffer (enables debug mode)]),
608 	if test "$enableval" = "yes"; then
609 		AC_DEFINE(SNIFFER, 1)
610 		x_sniffer_on=yes; x_debug_on=yes
611 	fi
612 )
613 
614 # enable additional debugging code?
615 
616 AC_ARG_ENABLE(debug,
617 	AS_HELP_STRING([--enable-debug],
618 		       [show additional debug output]),
619 	if test "$enableval" = "yes"; then x_debug_on=yes; fi
620 )
621 if test "$x_debug_on" = "yes"; then
622 	AC_DEFINE(DEBUG, 1)
623 	test "$GCC" = "yes" && CFLAGS="-pedantic $CFLAGS"
624 	AC_CHECK_FUNCS(mtrace)
625 fi
626 
627 # enable "strict RFC rules"?
628 
629 x_strict_rfc_on=no
630 AC_ARG_ENABLE(strict-rfc,
631 	AS_HELP_STRING([--enable-strict-rfc],
632 		       [strict RFC conformance -- may break clients!]),
633 	if test "$enableval" = "yes"; then
634 		AC_DEFINE(STRICT_RFC, 1)
635 		x_strict_rfc_on=yes
636 	fi
637 )
638 
639 # -- Definitions --
640 
641 AC_DEFINE_UNQUOTED(HOST_CPU, "$host_cpu" )
642 AC_DEFINE_UNQUOTED(HOST_VENDOR, "$host_vendor" )
643 AC_DEFINE_UNQUOTED(HOST_OS, "$host_os" )
644 
645 # Add additional CFLAGS, LDFLAGS and LIBS which were specified on the command
646 # line or by some tests from above, but after running this script. Useful for
647 # adding "-Werror", for example:
648 test -n "$CFLAGS_END" && CFLAGS="$CFLAGS $CFLAGS_END"
649 test -n "$LDFLAGS_END" && LDFLAGS="$LDFLAGS $LDFLAGS_END"
650 test -n "$LIBS_END" && LIBS="$LIBS $LIBS_END"
651 
652 # -- Generate files --
653 
654 AC_CONFIG_FILES([ \
655 	Makefile \
656 	contrib/Debian/Makefile \
657 	contrib/MacOSX/Makefile \
658 	contrib/MacOSX/ngIRCd.pmdoc/Makefile \
659 	contrib/MacOSX/ngIRCd.xcodeproj/Makefile \
660 	contrib/Makefile \
661 	doc/Makefile \
662 	doc/src/Makefile \
663 	man/Makefile \
664 	src/ipaddr/Makefile \
665 	src/Makefile \
666 	src/ngircd/Makefile \
667 	src/portab/Makefile \
668 	src/testsuite/Makefile \
669 	src/tool/Makefile \
670 ])
671 
672 AC_OUTPUT
673 
674 type dpkg >/dev/null 2>&1
675 if test $? -eq 0; then
676 	# Generate debian/ link if the dpkg command exists
677 	# (read: if we are running on a debian compatible system)
678 	echo "creating Debian-specific links ..."
679 	if test ! -f debian/rules -a -f contrib/Debian/rules; then
680 		ln -s contrib/Debian debian
681 	fi
682 fi
683 
684 # -- Result --
685 
686 echo
687 echo "ngIRCd $PACKAGE_VERSION has been configured with the following options:"
688 echo
689 
690 # Someone please show me a better way :)  [borrowed by OpenSSH]
691 B=`eval echo ${bindir}` ; B=`eval echo ${B}`
692 S=`eval echo ${sbindir}` ; S=`eval echo ${S}`
693 C=`eval echo ${sysconfdir}` ; C=`eval echo ${C}`
694 M=`eval echo ${mandir}` ; M=`eval echo ${M}`
695 D=`eval echo ${docdir}` ; D=`eval echo ${D}`
696 
697 echo "               Host: ${host}"
698 echo "           Compiler: ${CC}"
699 test -n "$CFLAGS"	&& echo "     Compiler flags: ${CFLAGS}"
700 test -n "$CPPFLAGS"	&& echo " Preprocessor flags: ${CPPFLAGS}"
701 test -n "$LDFLAGS"	&& echo "       Linker flags: ${LDFLAGS}"
702 test -n "$LIBS"		&& echo "          Libraries: ${LIBS}"
703 echo
704 echo "    'ngircd' binary: $S"
705 echo " Configuration file: $C"
706 echo "       Manual pages: $M"
707 echo "      Documentation: $D"
708 echo
709 
710 echo $ECHO_N "     Syslog support: $ECHO_C"
711 test "$x_syslog_on" = "yes" \
712 	&& echo $ECHO_N "yes   $ECHO_C" \
713 	|| echo $ECHO_N "no    $ECHO_C"
714 echo $ECHO_N "  Enable debug code: $ECHO_C"
715 test "$x_debug_on" = "yes" \
716 	&& echo "yes" \
717 	|| echo "no"
718 
719 echo $ECHO_N "   zlib compression: $ECHO_C"
720 test "$x_zlib_on" = "yes" \
721 	&& echo $ECHO_N "yes   $ECHO_C" \
722 	|| echo $ECHO_N "no    $ECHO_C"
723 echo $ECHO_N "        IRC sniffer: $ECHO_C"
724 test "$x_sniffer_on" = "yes" \
725 	&& echo "yes" \
726 	|| echo "no"
727 
728 echo $ECHO_N "   Use TCP Wrappers: $ECHO_C"
729 test "$x_tcpwrap_on" = "yes" \
730 	&& echo $ECHO_N "yes   $ECHO_C" \
731 	|| echo $ECHO_N "no    $ECHO_C"
732 echo $ECHO_N "    Strict RFC mode: $ECHO_C"
733 test "$x_strict_rfc_on" = "yes" \
734 	&& echo "yes" \
735 	|| echo "no"
736 
737 echo $ECHO_N "      IDENT support: $ECHO_C"
738 test "$x_identauth_on" = "yes" \
739 	&& echo $ECHO_N "yes   $ECHO_C" \
740 	|| echo $ECHO_N "no    $ECHO_C"
741 echo $ECHO_N "      IRC+ protocol: $ECHO_C"
742 test "$x_ircplus_on" = "yes" \
743 	&& echo "yes" \
744 	|| echo "no"
745 
746 echo $ECHO_N "      IPv6 protocol: $ECHO_C"
747 test "$x_ipv6_on" = "yes" \
748 	&& echo $ECHO_N "yes   $ECHO_C" \
749 	|| echo $ECHO_N "no    $ECHO_C"
750 echo $ECHO_N "        I/O backend: $ECHO_C"
751 	echo "$x_io_backend"
752 
753 echo $ECHO_N "        PAM support: $ECHO_C"
754 test "$x_pam_on" = "yes" \
755 	&& echo $ECHO_N "yes   $ECHO_C" \
756 	|| echo $ECHO_N "no    $ECHO_C"
757 echo $ECHO_N "        SSL support: $ECHO_C"
758 echo "$x_ssl_lib"
759 
760 echo $ECHO_N "   libiconv support: $ECHO_C"
761 	echo "$x_iconv_on"
762 
763 echo
764 
765 define(_automake_regex_,[[^AUTOMAKE_OPTIONS = [a-z .\-]*/portab/ansi2knr]])
766 if ! grep "_automake_regex_" src/ngircd/Makefile.am >/dev/null 2>&1; then
767 	echo "WARNING:"
768 	echo "This GNU automake generated build system does not support \"de-ANSI-fication\","
769 	echo "therefore don't use it to generate \"official\" distribution archives!"
770 	echo "(Most probably you want to use GNU automake 1.11.x for this purpose ...)"
771 	echo
772 fi
773 
774 # -eof-