1#                                               -*- Autoconf -*-
2# Process this file with autoconf to produce a configure script.
3m4_include([../version.m4])
4AC_PREREQ([2.61])
5AC_INIT([sntp], [VERSION_NUMBER])
6AC_CONFIG_MACRO_DIR([../m4])
7AC_CONFIG_AUX_DIR([.])
8
9# Increment sntp_configure_cache_version by one for each change to
10# configure.ac or .m4 files which invalidates cached values from
11# previous versions.
12#
13# If the change affects cache variables used only by the main NTP
14# configure.ac, then only its version number should be bumped, while
15# the subdir configure.ac version numbers should be unchanged.  The
16# same is true for a test/variable that is used only by one subdir
17# being changed incompatibly; only that subdir's cache version needs
18# bumping.
19#
20# If a change affects variables shared by all NTP configure scripts,
21# please bump the version numbers of all three.  If you are not sure,
22# the safe choice is to bump all three on any cache-invalidating change.
23#
24# In order to avoid the risk of version stamp collision between -stable
25# and -dev branches, do not simply increment the version, instead use
26# the date YYYYMMDD optionally with -HHMM if there is more than one
27# bump in a day.
28
29sntp_configure_cache_version=20091117
30
31# When the version of config.cache and configure do not
32# match, NTP_CACHEVERSION will flush the cache.
33
34NTP_CACHEVERSION([sntp], [$sntp_configure_cache_version])
35
36AM_INIT_AUTOMAKE
37AC_CANONICAL_BUILD
38AC_CANONICAL_HOST
39dnl the 'build' machine is where we run configure and compile
40dnl the 'host' machine is where the resulting stuff runs.
41AC_DEFINE_UNQUOTED([STR_SYSTEM], "$host", [canonical system (cpu-vendor-os) of where we should run])
42AC_CONFIG_HEADER([config.h])
43dnl AC_ARG_PROGRAM
44
45# Checks for programs.
46AM_PROG_CC_C_O
47AC_PROG_CPP
48
49# AC_PROG_CC_STDC has two functions.  It attempts to find a compiler
50# capable of C99, or failing that, for C89.  CC is set afterward with
51# the selected invocation, such as "gcc --std=gnu99".  Also, the
52# ac_cv_prog_cc_stdc variable is no if the compiler selected for CC
53# does not accept C89.
54
55AC_PROG_CC_STDC
56
57case "$ac_cv_prog_cc_stdc" in
58 no)
59    AC_MSG_WARN([ANSI C89/ISO C90 is the minimum to compile SNTP ]
60		[version 4.2.5 and higher.])
61esac
62
63AC_CACHE_CHECK(
64    [if $CC can handle @%:@warning],
65    [ntp_cv_cpp_warning],
66    [AC_COMPILE_IFELSE(
67	[AC_LANG_PROGRAM([[]], [[#warning foo]])],
68	[ntp_cv_cpp_warning=yes],
69	[ntp_cv_cpp_warning=no]
70    )]
71)
72case "$ntp_cv_cpp_warning" in
73 no)
74    AC_DEFINE([NO_OPTION_NAME_WARNINGS], [1],
75	[Should we avoid @%:@warning on option name collisions?])
76esac
77
78case "$GCC" in
79 yes)
80    SAVED_CFLAGS_NTP="$CFLAGS"
81    CFLAGS="$CFLAGS -Wstrict-overflow"
82    AC_CACHE_CHECK(
83	[if $CC can handle -Wstrict-overflow], 
84	[ntp_cv_gcc_Wstrict_overflow], 
85	[AC_COMPILE_IFELSE(
86	    [AC_LANG_PROGRAM([[]], [[]])],
87	    [ntp_cv_gcc_Wstrict_overflow=yes],
88	    [ntp_cv_gcc_Wstrict_overflow=no]
89	)	]
90    )
91    #
92    # $ntp_cv_gcc_Wstrict_overflow is tested later to add the 
93    # flag to CFLAGS.
94    #
95    CFLAGS="$SAVED_CFLAGS_NTP -Winit-self"
96    AC_CACHE_CHECK(
97	[if $CC can handle -Winit-self], 
98	[ntp_cv_gcc_Winit_self],
99	[
100	    AC_COMPILE_IFELSE(
101		[AC_LANG_PROGRAM([[]], [[]])],
102		[ntp_cv_gcc_Winit_self=yes],
103		[ntp_cv_gcc_Winit_self=no]
104	    )
105	]
106    )
107    CFLAGS="$SAVED_CFLAGS_NTP"
108    AS_UNSET([SAVED_CFLAGS_NTP])
109    #
110    # $ntp_cv_gcc_Winit_self is tested later to add the 
111    # flag to CFLAGS.
112    #
113esac
114
115# HMS: These need to be moved to AM_CPPFLAGS and/or AM_CFLAGS
116case "$host" in
117 *-*-solaris*)
118    # see "man standards".
119    # -D_XOPEN_SOURCE=500 is probably OK for c89 and before
120    # -D_XOPEN_SOURCE=600 seems OK for c99
121    #CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=500 -D__EXTENSIONS__"
122    CPPFLAGS="$CPPFLAGS -D__EXTENSIONS__"
123    libxnet=-lxnet
124    ;;
125esac
126
127AC_DISABLE_SHARED
128
129# NTP has (so far) been relying on leading-edge autogen.
130# Therefore, by default:
131# - use the version we ship with
132# - do not install it
133# - build a static copy (AC_DISABLE_SHARED - done earlier)
134case "${enable_local_libopts+set}" in
135 set) ;;
136 *) enable_local_libopts=yes ;;
137esac
138case "${enable_libopts_install+set}" in
139 set) ;;
140 *) enable_libopts_install=no ;;
141esac
142LIBOPTS_CHECK
143
144AC_PROG_LIBTOOL
145NTP_DIR_SEP
146
147# Checks for libraries.
148NTP_LIB_M
149
150case "$GCC" in
151 yes)
152    CFLAGS="$CFLAGS -Wall"
153    # CFLAGS="$CFLAGS -Wcast-align"
154    CFLAGS="$CFLAGS -Wcast-qual"
155    # CFLAGS="$CFLAGS -Wconversion"
156    # CFLAGS="$CFLAGS -Werror"
157    # CFLAGS="$CFLAGS -Wextra"
158    # CFLAGS="$CFLAGS -Wfloat-equal"
159    CFLAGS="$CFLAGS -Wmissing-prototypes"
160    CFLAGS="$CFLAGS -Wpointer-arith"
161    CFLAGS="$CFLAGS -Wshadow"
162    # CFLAGS="$CFLAGS -Wtraditional"
163    # CFLAGS="$CFLAGS -Wwrite-strings"
164    case "$ntp_cv_gcc_Winit_self" in
165     yes)
166	CFLAGS="$CFLAGS -Winit-self"
167    esac
168    case "$ntp_cv_gcc_Wstrict_overflow" in
169     yes)
170	CFLAGS="$CFLAGS -Wstrict-overflow"
171    esac
172    # -W[no-]strict-prototypes is added later depending on OpenSSL
173esac
174
175AC_CHECK_FUNC([gethostent], ,
176	[AC_SEARCH_LIBS([gethostent], [nsl], , , [$libxnet -lsocket])])
177AC_CHECK_FUNC([openlog], , 
178	[AC_SEARCH_LIBS([openlog], [gen], , 
179		[AC_SEARCH_LIBS([openlog], [syslog], , , [$libxnet -lsocket])])])
180
181AC_SEARCH_LIBS([setsockopt], [socket xnet])
182
183# Checks for header files.
184AC_HEADER_STDC
185
186dnl  HP-UX 11.31 on HPPA has a net/if.h that can't be compiled with gcc4
187dnl  due to an incomplete type (a union) mpinfou used in an array.  gcc3
188dnl  compiles it without complaint.  The mpinfou union is defined later
189dnl  in the resulting preprocessed source than the spu_info array in
190dnl  /usr/include/machine/sys/getppdp.h:
191dnl	extern union mpinfou spu_info[];
192dnl  triggering the error.  Our strategy is on HP-UX only, test for
193dnl  net/netmp.h, which is the file included by net/if.h that leads to
194dnl  getppdp.h.  If it is present but can't be compiled, try adding
195dnl  a duplicate definition of mpinfou, which should then allow the
196dnl  following net/if.h and net/if6.h tests to proceed normally.
197dnl  Using net/netmp.h allows us to avoid polluting test results for
198dnl  net/if.h.
199#
200case "$host" in
201 *-hp-hpux*)
202    AC_CHECK_HEADERS(
203	[net/netmp.h],
204	[netmp_h_works=yes],
205	[netmp_h_works=no]
206    )
207    case "$netmp_h_works" in
208     no)
209	cat >>confdefs.h <<_ACEOF
210#ifndef MPINFOU_PREDECLARED
211# define MPINFOU_PREDECLARED
212typedef union mpinfou {		/* For lint */
213	struct pdk_mpinfo *pdkptr;
214	struct mpinfo *pikptr;
215} mpinfou_t;
216#endif
217_ACEOF
218	AH_BOTTOM([
219#ifndef MPINFOU_PREDECLARED
220# define MPINFOU_PREDECLARED
221typedef union mpinfou {		/* For lint */
222	struct pdk_mpinfo *pdkptr;
223	struct mpinfo *pikptr;
224} mpinfou_t;
225#endif
226])
227	;;
228    esac
229    ;;
230esac
231
232AC_CHECK_HEADERS([netdb.h netinet/in.h stdlib.h string.h strings.h syslog.h])
233AC_CHECK_HEADERS([sys/socket.h sys/time.h])
234AC_HEADER_TIME
235
236# Checks for typedefs, structures, and compiler characteristics.
237AC_HEADER_STDBOOL
238AC_C_CONST
239AC_TYPE_SIZE_T
240AC_CHECK_SIZEOF([time_t])
241
242AC_C_INLINE
243
244case "$ac_cv_c_inline" in
245 '')
246    ;;
247 *)
248    AC_DEFINE(HAVE_INLINE,1,[inline keyword or macro available])
249    AC_SUBST(HAVE_INLINE)
250esac
251
252AC_C_CHAR_UNSIGNED		dnl CROSS_COMPILE?
253AC_CHECK_SIZEOF([signed char])
254AC_CHECK_SIZEOF([int])
255AC_CHECK_SIZEOF([long])
256
257AC_CHECK_TYPES([s_char])
258case "$ac_cv_c_char_unsigned$ac_cv_sizeof_signed_char$ac_cv_type_s_char" in
259 *yes)
260    # We have a typedef for s_char.  Might as well believe it...
261    ;;
262 no0no)
263    # We have signed chars, can't say 'signed char', no s_char typedef.
264    AC_DEFINE([NEED_S_CHAR_TYPEDEF], 1, [Do we need an s_char typedef?])
265    ;;
266 no1no)
267    # We have signed chars, can say 'signed char', no s_char typedef.
268    AC_DEFINE([NEED_S_CHAR_TYPEDEF])
269    ;;
270 yes0no)
271    # We have unsigned chars, can't say 'signed char', no s_char typedef.
272    AC_MSG_ERROR([No way to specify a signed character!])
273    ;;
274 yes1no)
275    # We have unsigned chars, can say 'signed char', no s_char typedef.
276    AC_DEFINE([NEED_S_CHAR_TYPEDEF])
277    ;;
278esac
279AC_TYPE_UID_T
280
281NTP_OPENSSL
282
283AC_CACHE_CHECK(
284    [type of socklen arg for getsockname()],
285    [ntp_cv_getsockname_socklen_type],
286    [
287    getsockname_socklen_type_found=no
288    for getsockname_arg2 in 'struct sockaddr *' 'void *'; do
289	for ntp_cv_getsockname_socklen_type in 'socklen_t' 'size_t' 'unsigned int' 'int'; do
290	    AC_COMPILE_IFELSE(
291		[AC_LANG_PROGRAM(
292		    [[
293			#ifdef HAVE_SYS_TYPES_H
294			# include <sys/types.h>
295			#endif
296			#ifdef HAVE_SYS_SOCKET_H
297			# include <sys/socket.h>
298			#endif
299		    ]], [[
300			extern
301			getsockname(int, $getsockname_arg2, 
302				$ntp_cv_getsockname_socklen_type *);
303		    ]]
304		)],
305		[getsockname_socklen_type_found=yes ; break 2],
306		[]
307	    )
308	done
309    done
310    case "$getsockname_socklen_type_found" in
311     no)
312	ntp_cv_getsockname_socklen_type='socklen_t'
313    esac
314    AS_UNSET([getsockname_arg2])
315    AS_UNSET([getsockname_socklen_type_found])
316    ]
317)
318AC_DEFINE_UNQUOTED([GETSOCKNAME_SOCKLEN_TYPE],
319		   $ntp_cv_getsockname_socklen_type,
320		   [What is getsockname()'s socklen type?])
321
322AC_CACHE_CHECK(
323    [for struct sockaddr_storage],
324    [ntp_cv_sockaddr_storage],
325    [AC_COMPILE_IFELSE(
326	[AC_LANG_PROGRAM(
327	    [[
328		#ifdef HAVE_SYS_TYPES_H
329		# include <sys/types.h>
330		#endif
331		#ifdef HAVE_SYS_SOCKET_H
332		# include <sys/socket.h>
333		#endif
334		#ifdef HAVE_NETINET_IN_H
335		# include <netinet/in.h>
336		#endif
337	    ]],
338	    [[
339		struct sockaddr_storage n;
340	    ]]
341	)],
342	[ntp_cv_sockaddr_storage=yes],
343	[ntp_cv_sockaddr_storage=no]
344    )]
345)
346case "$ntp_cv_sockaddr_storage" in
347 yes)
348    AC_DEFINE([HAVE_STRUCT_SOCKADDR_STORAGE], [1],
349	[Does a system header define struct sockaddr_storage?])
350esac
351
352AC_CACHE_CHECK(
353    [for sockaddr_storage.ss_family],
354    [ntp_cv_have_ss_family],
355    [AC_COMPILE_IFELSE(
356	[AC_LANG_PROGRAM(
357	    [[
358		#ifdef HAVE_SYS_TYPES_H
359		# include <sys/types.h>
360		#endif
361		#ifdef HAVE_SYS_SOCKET_H
362		# include <sys/socket.h>
363		#endif
364		#ifdef HAVE_NETINET_IN_H
365		# include <netinet/in.h>
366		#endif
367	    ]],
368	    [[
369		struct sockaddr_storage s;
370		s.ss_family = 1;
371	    ]]
372	)],
373	[ntp_cv_have_ss_family=yes],
374	[ntp_cv_have_ss_family=no]
375    )]
376)
377
378case "$ntp_cv_have_ss_family" in
379 no)
380    AC_CACHE_CHECK(
381	[for sockaddr_storage.__ss_family],
382	[ntp_cv_have___ss_family],
383	[AC_COMPILE_IFELSE(
384	    [AC_LANG_PROGRAM(
385		[[
386		    #ifdef HAVE_SYS_TYPES_H
387		    # include <sys/types.h>
388		    #endif
389		    #ifdef HAVE_SYS_SOCKET_H
390		    # include <sys/socket.h>
391		    #endif
392		    #ifdef HAVE_NETINET_IN_H
393		    # include <netinet/in.h>
394		    #endif
395		]],
396		[[
397		    struct sockaddr_storage s;
398		    s.__ss_family = 1;
399		]]
400	    )],
401	    [ntp_cv_have___ss_family=yes],
402	    [ntp_cv_have___ss_family=no]
403	)]
404    )
405    case "$ntp_cv_have___ss_family" in
406     yes)
407	AC_DEFINE([HAVE___SS_FAMILY_IN_SS], [1],
408	    [Does struct sockaddr_storage have __ss_family?])
409    esac
410esac
411
412AH_VERBATIM(
413    [HAVE___SS_FAMILY_IN_SS_VERBATIM],
414    [
415	/* Handle sockaddr_storage.__ss_family */
416	#ifdef HAVE___SS_FAMILY_IN_SS
417	# define ss_family __ss_family
418	#endif /* HAVE___SS_FAMILY_IN_SS */
419    ]
420)
421
422AC_CACHE_CHECK(
423    [for sockaddr_storage.ss_len],
424    [ntp_cv_have_ss_len],
425    [AC_COMPILE_IFELSE(
426	[AC_LANG_PROGRAM(
427	    [[
428		#ifdef HAVE_SYS_TYPES_H
429		# include <sys/types.h>
430		#endif
431		#ifdef HAVE_SYS_SOCKET_H
432		# include <sys/socket.h>
433		#endif
434		#ifdef HAVE_NETINET_IN_H
435		# include <netinet/in.h>
436		#endif
437	    ]],
438	    [[
439		struct sockaddr_storage s;
440		s.ss_len = 1;
441	    ]]
442	)],
443	[ntp_cv_have_ss_len=yes],
444	[ntp_cv_have_ss_len=no]
445    )]
446)
447
448case "$ntp_cv_have_ss_len" in
449 no)
450    AC_CACHE_CHECK(
451	[for sockaddr_storage.__ss_len],
452	[ntp_cv_have___ss_len],
453	[AC_COMPILE_IFELSE(
454	    [AC_LANG_PROGRAM(
455		[[
456		    #ifdef HAVE_SYS_TYPES_H
457		    # include <sys/types.h>
458		    #endif
459		    #ifdef HAVE_SYS_SOCKET_H
460		    # include <sys/socket.h>
461		    #endif
462		    #ifdef HAVE_NETINET_IN_H
463		    # include <netinet/in.h>
464		    #endif
465		]],
466		[[
467		    struct sockaddr_storage s;
468		    s.__ss_len = 1;
469		]]
470	    )],
471	    [ntp_cv_have___ss_len=yes],
472	    [ntp_cv_have___ss_len=no]
473	)]
474    )
475    case "$ntp_cv_have___ss_len" in
476     yes)
477	AC_DEFINE([HAVE___SS_LEN_IN_SS], [1],
478	    [Does struct sockaddr_storage have __ss_len?])
479    esac
480esac
481
482AH_VERBATIM(
483    [HAVE___SS_LEN_IN_SS_VERBATIM],
484    [
485	/* Handle sockaddr_storage.__ss_len */
486	#ifdef HAVE___SS_LEN_IN_SS
487	# define ss_len __ss_len
488	#endif /* HAVE___SS_LEN_IN_SS */
489    ]
490)
491
492#
493# Look for in_port_t.
494#
495AC_CACHE_CHECK(
496    [for in_port_t],
497    [isc_cv_have_in_port_t],
498    [AC_COMPILE_IFELSE(
499	[AC_LANG_PROGRAM(
500	    [[
501		#include <sys/types.h>
502		#include <netinet/in.h>
503	    ]],
504	    [[
505		in_port_t port = 25; 
506		return (0);
507	    ]]
508	)],
509	[isc_cv_have_in_port_t=yes],
510	[isc_cv_have_in_port_t=no]
511    )]
512)
513case "$isc_cv_have_in_port_t" in
514 no)
515	AC_DEFINE([ISC_PLATFORM_NEEDPORTT], [1],
516	    [Declare in_port_t?])
517esac
518
519AC_CACHE_CHECK(
520    [for multicast IP support],
521    [ntp_cv_multicast],
522    [
523	ntp_cv_multicast=no
524	case "$host" in
525	 i386-sequent-sysv4)
526	    ;;
527	 *)
528	    AC_COMPILE_IFELSE(
529		[AC_LANG_PROGRAM(
530		    [[
531			#ifdef HAVE_NETINET_IN_H
532			#include <netinet/in.h>
533			#endif
534		    ]],
535		    [[
536			struct ip_mreq ipmr;
537			ipmr.imr_interface.s_addr = 0;
538		    ]]
539		)],
540		[ntp_cv_multicast=yes],
541		[]
542	    )
543	esac
544    ]
545)
546case "$ntp_cv_multicast" in
547 yes)
548    AC_DEFINE([MCAST], [1], [Does the target support multicast IP?])
549    AC_CACHE_CHECK(
550	[arg type needed for setsockopt() IP*_MULTICAST_LOOP],
551	[ntp_cv_typeof_ip_multicast_loop],
552	[
553	    case "$host" in
554	     *-*-netbsd*|*-*-*linux*)
555		ntp_cv_typeof_ip_multicast_loop=u_int
556		;;
557	     *)
558		ntp_cv_typeof_ip_multicast_loop=u_char
559	    esac
560	]
561    )
562    AC_DEFINE_UNQUOTED([TYPEOF_IP_MULTICAST_LOOP],
563	$ntp_cv_typeof_ip_multicast_loop,
564	[What type to use for setsockopt])
565esac
566
567# HMS: We don't need res_init, but since we may be using cached 
568# values from ntpd we need to test the same way 
569AC_SEARCH_LIBS([res_init], [resolv], , , [-lsocket -lnsl]) 
570AC_SEARCH_LIBS([inet_ntop], [resolv], , , [-lsocket -lnsl])
571AC_CHECK_FUNC([inet_ntop], [], 
572    [AC_DEFINE([ISC_PLATFORM_NEEDNTOP], [1], [ISC: provide inet_ntop()])])
573AC_CHECK_FUNC([inet_pton], [],
574    [AC_DEFINE([ISC_PLATFORM_NEEDPTON], [1], [ISC: provide inet_pton()])])
575
576AC_CACHE_CHECK(
577    [struct sockaddr for sa_len],
578    [isc_cv_platform_havesalen],
579    [AC_COMPILE_IFELSE(
580	[AC_LANG_PROGRAM(
581	    [[
582		#include <sys/types.h>
583		#include <sys/socket.h>
584	    ]],
585	    [[
586		extern struct sockaddr *ps;
587		return ps->sa_len;
588	    ]]
589	)],
590	[isc_cv_platform_havesalen=yes],
591	[isc_cv_platform_havesalen=no]
592    )]
593)
594case "$isc_cv_platform_havesalen" in
595 yes)
596    AC_DEFINE([ISC_PLATFORM_HAVESALEN], [1],
597	 [struct sockaddr has sa_len?])
598esac
599
600AC_ARG_ENABLE(
601    [ipv6],
602    [AS_HELP_STRING(
603	[--enable-ipv6],
604	[s use IPv6?]
605    )]
606)
607
608case "$enable_ipv6" in
609 yes|''|autodetect)
610    case "$host" in
611     powerpc-ibm-aix4*)
612	;;
613     *)
614	AC_DEFINE([WANT_IPV6], [1], [configure --enable-ipv6])
615	;;
616    esac
617    ;;
618 no)
619    ;;
620esac
621
622
623dnl [Bug 1984] ntp/libisc fails to compile on OS X 10.7 (Lion)
624case "$host" in
625 *-*-darwin*)
626    AC_DEFINE([__APPLE_USE_RFC_3542], [1], [Are we _special_?])
627esac
628
629
630AC_CACHE_CHECK(
631    [for IPv6 structures],
632    [isc_cv_found_ipv6],
633    [AC_COMPILE_IFELSE(
634	[AC_LANG_PROGRAM(
635	    [[
636		#include <sys/types.h>
637		#include <sys/socket.h>
638		#include <netinet/in.h>
639	    ]],
640	    [[
641		struct sockaddr_in6 sin6;
642	    ]]
643	)],
644	[isc_cv_found_ipv6=yes],
645	[isc_cv_found_ipv6=no]
646    )]
647)
648
649#
650# See whether IPv6 support is provided via a Kame add-on.
651# This is done before other IPv6 linking tests so LIBS is properly set.
652#
653AC_MSG_CHECKING([for Kame IPv6 support])
654AC_ARG_WITH(
655    [kame],
656    [AS_HELP_STRING(
657	[--with-kame],
658	[- =/usr/local/v6]
659    )],
660    [use_kame="$withval"],
661    [use_kame="no"]
662)
663case "$use_kame" in
664 no)
665    ;;
666 yes)
667    kame_path=/usr/local/v6
668    ;;
669 *)
670    kame_path="$use_kame"
671    ;;
672esac
673case "$use_kame" in
674 no)
675    AC_MSG_RESULT([no])
676    ;;
677 *)
678    if test -f $kame_path/lib/libinet6.a; then
679	AC_MSG_RESULT([$kame_path/lib/libinet6.a])
680	LIBS="-L$kame_path/lib -linet6 $LIBS"
681    else
682	AC_MSG_ERROR([$kame_path/lib/libinet6.a not found.
683
684Please choose the proper path with the following command:
685
686    configure --with-kame=PATH
687])
688    fi
689    ;;
690esac
691
692#
693# Whether netinet6/in6.h is needed has to be defined in isc/platform.h.
694# Including it on Kame-using platforms is very bad, though, because
695# Kame uses #error against direct inclusion.   So include it on only
696# the platform that is otherwise broken without it -- BSD/OS 4.0 through 4.1.
697# This is done before the in6_pktinfo check because that's what
698# netinet6/in6.h is needed for.
699#
700case "$host" in
701 *-bsdi4.[[01]]*)
702    AC_DEFINE([ISC_PLATFORM_NEEDNETINET6IN6H], [1],
703	[Do we need netinet6/in6.h?])
704    isc_netinet6in6_hack="#include <netinet6/in6.h>"
705    ;;
706 *)
707    isc_netinet6in6_hack=""
708    ;;
709esac
710
711#
712# This is similar to the netinet6/in6.h issue.
713#
714case "$host" in
715 *-sco-sysv*uw*|*-*-sysv*UnixWare*|*-*-sysv*OpenUNIX*)
716    AC_DEFINE([ISC_PLATFORM_FIXIN6ISADDR], [1],
717	[Do we need to fix in6isaddr?])
718    isc_netinetin6_hack="#include <netinet/in6.h>"
719    ;;
720 *)
721    isc_netinetin6_hack=""
722    ;;
723esac
724
725
726case "$isc_cv_found_ipv6" in
727 yes)
728    AC_DEFINE([ISC_PLATFORM_HAVEIPV6], [1], [have IPv6?])
729    AC_CACHE_CHECK(
730	[for in6_pktinfo],
731	[isc_cv_have_in6_pktinfo],
732	[AC_COMPILE_IFELSE(
733	    [AC_LANG_PROGRAM(
734		[[
735		    #include <sys/types.h>
736		    #include <sys/socket.h>
737		    #include <netinet/in.h>
738		    $isc_netinetin6_hack
739		    $isc_netinet6in6_hack
740		]],
741		[[
742		    struct in6_pktinfo xyzzy;
743		]]
744	    )],
745	    [isc_cv_have_in6_pktinfo=yes],
746	    [isc_cv_have_in6_pktinfo=no]
747	)]
748    )
749    case "$isc_cv_have_in6_pktinfo" in
750     yes)
751	AC_DEFINE([ISC_PLATFORM_HAVEIN6PKTINFO], [1],
752		[have struct in6_pktinfo?])
753    esac
754
755
756    # HMS: Use HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID instead?
757    AC_CACHE_CHECK(
758	[for sockaddr_in6.sin6_scope_id],
759	[isc_cv_have_sin6_scope_id],
760	[AC_COMPILE_IFELSE(
761	    [AC_LANG_PROGRAM(
762		[[
763		    #include <sys/types.h>
764		    #include <sys/socket.h>
765		    #include <netinet/in.h>
766		    $isc_netinetin6_hack
767		    $isc_netinet6in6_hack
768		]],
769		[[
770		    struct sockaddr_in6 xyzzy;
771		    xyzzy.sin6_scope_id = 0;
772		]]
773	    )],
774	    [isc_cv_have_sin6_scope_id=yes],
775	    [isc_cv_have_sin6_scope_id=no]
776	)]
777    )
778
779    case "$isc_cv_have_sin6_scope_id" in
780     yes)
781	AC_DEFINE([ISC_PLATFORM_HAVESCOPEID], [1], [sin6_scope_id?])
782    esac
783esac
784
785
786# We need this check run even without isc_cv_found_ipv6=yes
787
788AC_CACHE_CHECK(
789    [for in6addr_any],
790    [isc_cv_have_in6addr_any],
791    [AC_LINK_IFELSE(
792	[AC_LANG_PROGRAM(
793	    [[
794		#include <sys/types.h>
795		#include <sys/socket.h>
796		#include <netinet/in.h>
797		$isc_netinetin6_hack
798		$isc_netinet6in6_hack
799	    ]],
800	    [[
801		struct in6_addr in6; 
802		in6 = in6addr_any;
803	    ]]
804	)],
805	[isc_cv_have_in6addr_any=yes],
806	[isc_cv_have_in6addr_any=no]
807    )]
808)
809
810case "$isc_cv_have_in6addr_any" in
811 no)
812    AC_DEFINE([ISC_PLATFORM_NEEDIN6ADDRANY], [1], [missing in6addr_any?])
813esac
814
815
816AC_CACHE_CHECK(
817    [for struct if_laddrconf],
818    [isc_cv_struct_if_laddrconf],
819    [AC_COMPILE_IFELSE(
820	[AC_LANG_PROGRAM(
821	    [[
822		#include <sys/types.h>
823		#include <net/if6.h>
824	    ]],
825	    [[
826		struct if_laddrconf a;
827	    ]]
828	)],
829	[isc_cv_struct_if_laddrconf=yes],
830	[isc_cv_struct_if_laddrconf=no]
831    )]
832)
833
834case "$isc_cv_struct_if_laddrconf" in
835 yes)
836    AC_DEFINE([ISC_PLATFORM_HAVEIF_LADDRCONF], [1],
837	[have struct if_laddrconf?])
838esac
839
840AC_CACHE_CHECK(
841    [for struct if_laddrreq],
842    isc_cv_struct_if_laddrreq,
843    [AC_COMPILE_IFELSE(
844	[AC_LANG_PROGRAM(
845	    [[
846		#include <sys/types.h>
847		#include <net/if6.h>
848	    ]],
849	    [[
850		struct if_laddrreq a;
851	    ]]
852	)],
853	[isc_cv_struct_if_laddrreq=yes],
854	[isc_cv_struct_if_laddrreq=no]
855    )]
856)
857
858case "$isc_cv_struct_if_laddrreq" in
859 yes)
860    AC_DEFINE([ISC_PLATFORM_HAVEIF_LADDRREQ], [1],
861	[have struct if_laddrreq?])
862esac
863
864
865###
866
867# Hacks
868# these need work if we're to move libntp under sntp
869AC_DEFINE([HAVE_NO_NICE], 1, [sntp does not care about 'nice'])
870AC_DEFINE([HAVE_TERMIOS], 1, [sntp does not care about TTY stuff])
871
872# Checks for library functions.
873AC_CHECK_FUNCS([socket vsnprintf vsprintf])
874
875AC_MSG_CHECKING([for bin subdirectory])
876AC_ARG_WITH(
877    [binsubdir],
878    [AS_HELP_STRING(
879	[--with-binsubdir],
880	[bin ={bin,sbin}]
881    )],
882    [use_binsubdir="$withval"],
883    [use_binsubdir="bin"]
884)
885case "$use_binsubdir" in
886 bin)
887    ;;
888 sbin)
889    ;;
890 *)
891    AC_MSG_ERROR([<$use_binsubdir> is illegal - must be "bin" or "sbin"])
892    ;;
893esac
894AC_MSG_RESULT([$use_binsubdir])
895
896BINSUBDIR=$use_binsubdir
897AC_SUBST([BINSUBDIR])
898AM_CONDITIONAL([NTP_BINSUBDIR_IS_BIN], [test "bin" = "$BINSUBDIR"])
899
900AC_CONFIG_FILES([Makefile])
901AC_OUTPUT
902