configure.in 24.1 KB
Newer Older
Nick Mathewson's avatar
Nick Mathewson committed
1
dnl $Id$
Roger Dingledine's avatar
Roger Dingledine committed
2
3
dnl Copyright (c) 2001-2004, Roger Dingledine
dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
Nick Mathewson's avatar
Nick Mathewson committed
4
dnl See LICENSE for licensing information
5
6

AC_INIT
7
AM_INIT_AUTOMAKE(tor, 0.1.2.2-alpha-dev)
8
9
AM_CONFIG_HEADER(orconfig.h)

10
11
AC_CANONICAL_HOST

12
13
14
if test -f /etc/redhat-release; then
    CFLAGS="$CFLAGS -I/usr/kerberos/include"
fi
15
16

AC_ARG_ENABLE(debug,
Nick Mathewson's avatar
Nick Mathewson committed
17
 AC_HELP_STRING(--enable-debug, compile with debugging info),
18
[if test x$enableval = xyes; then
19
    CFLAGS="$CFLAGS -g"
20
21
fi])

22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
AC_ARG_ENABLE(eventdns,
     AC_HELP_STRING(--enable-eventdns, enable asynchronous dns module),
     [case "${enableval}" in
        yes) eventdns=true ;;
        no)  eventdns=false ;;
        *) AC_MSG_ERROR(bad value for --enable-eventdns) ;;
      esac], [eventdns=true])
AM_CONDITIONAL(EVENTDNS, test x$eventdns = xtrue)
if test x$eventdns = xtrue; then
   AC_DEFINE([USE_EVENTDNS], 1, "Define to 1 if we'll be using eventdns.c")
fi

AC_ARG_ENABLE(transparent,
     AC_HELP_STRING(--disable-transparent, disable transparent proxy support),
     [case "${enableval}" in
        yes) transparent=true ;;
        no)  transparent=false ;;
        *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
      esac], [transparent=true])

Nick Mathewson's avatar
Nick Mathewson committed
42
43
44
45
AC_ARG_ENABLE(threads,
     AC_HELP_STRING(--disable-threads, disable multi-threading support))

if test x$enable_threads = x; then
46
   case $host in
47
    *-*-netbsd* | *-*-openbsd* )
48
49
     # Don't try multithreading on netbsd -- there is no threadsafe DNS
     # lookup function there.
50
51
     if test x$eventdns != xtrue; then
        AC_MSG_NOTICE([You are running OpenBSD or NetBSD; I am assuming that
52
getaddrinfo is not threadsafe here, so I will disable threads.])
53
54
        enable_threads="no"
    fi ;;
55
56
57
58
59
    *-*-solaris* )
     # Don't try multithreading on solaris -- cpuworkers seem to lock.
     AC_MSG_NOTICE([You are running Solaris; Sometimes threading makes
cpu workers lock up here, so I will disable threads.])
     enable_threads="no";;
Nick Mathewson's avatar
Nick Mathewson committed
60
61
62
63
64
65
66
67
68
    *)
     enable_threads="yes";;
   esac
fi

if test $enable_threads = "yes"; then
  AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
fi

69
70
71
72
73
74
case $host in
   *-*-solaris* )
     AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
     ;;
esac

75
76
77
AC_ARG_ENABLE(gcc-warnings,
     AC_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))

78
79
80
81
82
83
AC_PROG_CC
AC_PROG_MAKE_SET
AC_PROG_RANLIB

# The big search for OpenSSL
# copied from openssh's configure.ac
84
tryssldir=""
85
86
87
88
89
90
91
92
93
AC_ARG_WITH(ssl-dir,
        [  --with-ssl-dir=PATH     Specify path to OpenSSL installation ],
        [
                if test "x$withval" != "xno" ; then
                        tryssldir=$withval
                fi
        ]
)

94
95
96
97
98
99
100
101
102
103
trylibeventdir=""
AC_ARG_WITH(libevent-dir,
       [  --with-libevent-dir=PATH     Specify path to Libevent installation ],
       [
                if test "x$withval" != "xno" ; then
                        trylibeventdir=$withval
                fi
       ]
)

104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
TORUSER=_tor
AC_ARG_WITH(tor-user,
        [  --with-tor-user=NAME    Specify username for tor daemon ],
        [
           TORUSER=$withval
        ]
)
AC_SUBST(TORUSER)

TORGROUP=_tor
AC_ARG_WITH(tor-group,
        [  --with-tor-group=NAME   Specify group name for tor daemon ],
        [
           TORGROUP=$withval
        ]
)
AC_SUBST(TORGROUP)

122
123
124

dnl If WIN32 is defined and non-zero, we are building for win32
AC_MSG_CHECKING([for win32])
125
126
AC_RUN_IFELSE([
int main(int c, char **v) {
127
128
129
130
131
132
133
134
135
136
137
#ifdef WIN32
#if WIN32
  return 0;
#else
  return 1;
#endif
#else
  return 2;
#endif
}],
bwin32=true; AC_MSG_RESULT([yes]),
138
139
bwin32=false; AC_MSG_RESULT([no]),
bwin32=cross; AC_MSG_RESULT([cross])
140
141
)

142
143
144
145
146
147
148
149
150
151
152
153
154
155
if test $bwin32 = cross; then
AC_MSG_CHECKING([for win32 (cross)])
AC_COMPILE_IFELSE([
#ifdef WIN32
int main(int c, char **v) {return 0;}
#else
#error
int main(int c, char **v) {return x(y);}
#endif
],
bwin32=true; AC_MSG_RESULT([yes]),
bwin32=false; AC_MSG_RESULT([no]))
fi

156
157
158
159
if test $bwin32 = true; then
AC_DEFINE(MS_WINDOWS, 1, [Define to 1 if we are building for Windows.])
fi

160

161
AC_SEARCH_LIBS(socket, [socket])
162
AC_SEARCH_LIBS(gethostbyname, [nsl])
163
AC_SEARCH_LIBS(dlopen, [dl])
164
AC_SEARCH_LIBS(inet_aton, [resolv])
165
166
167
168
169

if test $enable_threads = "yes"; then
  AC_SEARCH_LIBS(pthread_create, [pthread])
  AC_SEARCH_LIBS(pthread_detach, [pthread])
fi
170
171

dnl ------------------------------------------------------
172
dnl Where do you live, libevent?  And how do we call you?
173

174
AC_CACHE_CHECK([for libevent directory], ac_cv_libevent_dir, [
175
176
  saved_LIBS="$LIBS"
  saved_LDFLAGS="$LDFLAGS"
177
  saved_CPPFLAGS="$CPPFLAGS"
178
  le_found=no
179
  for ledir in $trylibeventdir "" $prefix /usr/local ; do
180
    LDFLAGS="$saved_LDFLAGS"
181

182
    if test $bwin32 = true; then
183
        LIBS="$saved_LIBS -levent -lws2_32"
184
    else
185
        LIBS="$saved_LIBS -levent"
186
    fi
187

188
189
    # Skip the directory if it isn't there.
    if test ! -z "$ledir" -a ! -d "$ledir" ; then
190
       continue;
191
    fi
192
193
194
195
196
197
    if test ! -z "$ledir" ; then
      if test -d "$ledir/lib" ; then
        LDFLAGS="-L$ledir/lib $LDFLAGS"
      else
        LDFLAGS="-L$ledir $LDFLAGS"
      fi
198
199
200
201
202
      if test -d "$ledir/include" ; then
        CPPFLAGS="-I$ledir/include $CPPFLAGS"
      else
        CPPFLAGS="-I$ledir $CPPFLAGS"
      fi
203
    fi
204
    # Can I compile and link it?
205
    AC_TRY_LINK([#include <sys/time.h>
Roger Dingledine's avatar
Roger Dingledine committed
206
#include <sys/types.h>
207
#include <event.h>], [ event_init(); ],
208
209
210
211
212
213
214
       [ libevent_linked=yes ], [ libevent_linked=no ])
    if test $libevent_linked = yes; then
       if test ! -z "$ledir" ; then
         ac_cv_libevent_dir=$ledir
       else
         ac_cv_libevent_dir="(system)"
       fi
215
       le_found=yes
216
217
218
       break
    fi
  done
219
  LIBS="$saved_LIBS"
220
  LDFLAGS="$saved_LDFLAGS"
221
  CPPFLAGS="$saved_CPPFLAGS"
222
  if test $le_found = no ; then
223
224
    AC_MSG_ERROR([Could not find a linkable libevent. You can specify an explicit path using --with-libevent-dir])
  fi
225
])
226
227
228
229

if test $bwin32 = true; then
LIBS="$LIBS -levent -lws2_32"
else
230
LIBS="$LIBS -levent"
231
fi
232
233
234
235
236
237
238
if test $ac_cv_libevent_dir != "(system)"; then
  if test -d "$ac_cv_libevent_dir/lib" ; then
    LDFLAGS="-L$ac_cv_libevent_dir/lib $LDFLAGS"
    le_libdir="$ac_cv_libevent_dir/lib"
  else
    LDFLAGS="-L$ac_cv_libevent_dir $LDFLAGS"
    le_libdir="$ac_cv_libevent_dir"
239
  fi
240
241
242
243
  if test -d "$ac_cv_libevent_dir/include" ; then
    CPPFLAGS="-I$ac_cv_libevent_dir/include $CPPFLAGS"
  else
    CPPFLAGS="-I$ac_cv_libevent_dir $CPPFLAGS"
244
  fi
245
fi
246

247
if test -z "$CROSS_COMPILE"; then
248
249
AC_CACHE_CHECK([whether we need extra options to link libevent],
               ac_cv_libevent_linker_option, [
250
    saved_LDFLAGS="$LDFLAGS"
251
    le_runs=no
252
    linked_with=nothing
253
    for le_extra in "" "-Wl,-R$le_libdir" "-R$le_libdir" ; do
254
      LDFLAGS="$le_extra $saved_LDFLAGS"
255
      AC_TRY_RUN([void *event_init(void);
256
257
                int main(int c, char **v) {
                   event_init(); return 0;
258
                }],
259
                libevent_runs=yes, libevent_runs=no)
260
261
      if test $libevent_runs = yes ; then
        if test -z "$le_extra" ; then
262
          ac_cv_libevent_linker_option='(none)'
263
264
265
266
267
268
269
        else
          ac_cv_libevent_linker_option=$le_extra
        fi
        le_runs=yes
        break
      fi
    done
270
    if test $le_runs = no ; then
271
      AC_MSG_ERROR([Found linkable libevent in $ac_cv_libevent_dir, but it doesn't run, even with -R.  Maybe specify another using --with-libevent-dir?])
272
273
274
    fi
    LDFLAGS="$saved_LDFLAGS"
])
275

276
277
if test $ac_cv_libevent_linker_option != '(none)' ; then
   LDFLAGS="$ac_cv_libevent_linker_option $LDFLAGS"
278
fi
279
fi
280
281

dnl ------------------------------------------------------
282
dnl Where do you live, openssl?  And how do we call you?
283

284
285
286
AC_CACHE_CHECK([for OpenSSL directory], ac_cv_openssl_dir, [
  saved_LIBS="$LIBS"
  saved_LDFLAGS="$LDFLAGS"
287
  saved_CPPFLAGS="$CPPFLAGS"
288
289
290
  ssl_found=no
  for ssldir in $tryssldir "" $prefix /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /usr/pkg /opt /opt/openssl ; do
    LDFLAGS="$saved_LDFLAGS"
291
292
293
294
295
296
297

    if test $bwin32 = true; then
      LIBS="$saved_LIBS -lssl -lcrypto -lws2_32 -lgdi32"
    else
      LIBS="$saved_LIBS -lssl -lcrypto"
    fi

298
299
300
301
302
303
304
305
306
307
    # Skip the directory if it isn't there.
    if test ! -z "$ssldir" -a ! -d "$ssldir" ; then
       continue;
    fi
    if test ! -z "$ssldir" ; then
      if test -d "$ssldir/lib" ; then
        LDFLAGS="-L$ssldir/lib $LDFLAGS"
      else
        LDFLAGS="-L$ssldir $LDFLAGS"
      fi
308
309
310
311
312
      if test -d "$ssldir/include" ; then
        CPPFLAGS="-I$ssldir/include $CPPFLAGS"
      else
        CPPFLAGS="-I$ssldir $CPPFLAGS"
      fi
313
314
    fi
    # Can I link it?
315
316
    AC_TRY_LINK([#include <openssl/rand.h>],
       [ RAND_add((void*)0,0,0); ],
317
318
319
320
321
322
323
324
325
326
327
328
       [ openssl_linked=yes ], [ openssl_linked=no ])
    if test $openssl_linked = yes; then
       if test ! -z "$ssldir" ; then
         ac_cv_openssl_dir=$ssldir
       else
         ac_cv_openssl_dir="(system)"
       fi
       ssl_found=yes
       break
    fi
  done
  LIBS="$saved_LIBS"
329
  LDFLAGS="$saved_LDFLAGS"
330
  CPPFLAGS="$saved_CPPFLAGS"
331
332
333
334
  if test $ssl_found = no ; then
    AC_MSG_ERROR([Could not find a linkable OpenSSL. You can specify an explicit path using --with-ssl-dir])
  fi
])
335
336
337
338

if test $bwin32 = true; then
LIBS="$LIBS -lssl -lcrypto -lws2_32 -lgdi32"
else
339
LIBS="$LIBS -lssl -lcrypto"
340
341
fi

342
343
344
345
346
347
348
349
350
351
352
353
354
355
if test "$ac_cv_openssl_dir" != "(system)"; then
  if test -d "$ac_cv_openssl_dir/lib" ; then
    LDFLAGS="-L$ac_cv_openssl_dir/lib $LDFLAGS"
    ssl_libdir="$ac_cv_openssl_dir/lib"
  else
    LDFLAGS="-L$ac_cv_openssl_dir $LDFLAGS"
    ssl_libdir="$ac_cv_openssl_dir"
  fi
  if test -d "$ac_cv_openssl_dir/include" ; then
    CPPFLAGS="-I$ac_cv_openssl_dir/include $CPPFLAGS"
  else
    CPPFLAGS="-I$ac_cv_openssl_dir $CPPFLAGS"
  fi
fi
356

357
if test -z "$CROSS_COMPILE"
358
then
359
360
361
362
AC_CACHE_CHECK([whether we need extra options to link OpenSSL],
               ac_cv_openssl_linker_option, [
    saved_LDFLAGS="$LDFLAGS"
    ssl_runs=no
363
    linked_with=nothing
364
365
366
    for ssl_extra in "" "-Wl,-R$ssl_libdir" "-R$ssl_libdir" ; do
      LDFLAGS="$ssl_extra $saved_LDFLAGS"
      AC_TRY_RUN([
367
368
#include <string.h>
#include <openssl/rand.h>
Nick Mathewson's avatar
Nick Mathewson committed
369
int main(void)
370
371
372
373
374
375
376
{
        char a[2048];
        memset(a, 0, sizeof(a));
        RAND_add(a, sizeof(a), sizeof(a));
        return(RAND_status() <= 0);
}
                        ],
377
378
                openssl_runs=yes, openssl_runs=no)
      if test $openssl_runs = yes ; then
379
380
381
382
383
        if test "$linked_with" = nothing; then
           linked_with="$ssl_extra"
        fi
        AC_TRY_RUN([
#include <openssl/opensslv.h>
384
#include <openssl/crypto.h>
385
386
387
int main(void) {
return (OPENSSL_VERSION_NUMBER == SSLeay()) == 0;
}],
388
389
390
        right_version=yes, right_version=no)
        if test "$right_version" = yes; then
          if test -z "$ssl_extra" ; then
391
            ac_cv_openssl_linker_option='(none)'
392
393
394
395
396
397
398
399
400
401
402
403
404
          else
            ac_cv_openssl_linker_option=$ssl_extra
          fi
          ssl_runs=yes
          break
        fi
     fi
    done
    if test $ssl_runs = no ; then
      if test "$linked_with" = 'nothing' ; then
        AC_MSG_ERROR([Found linkable OpenSSL in $ac_cv_openssl_dir, but it doesn't run, even with -R.  Maybe specify another using --with-ssl-dir?])
      else
        if test -z "$linked_with" ; then
405
            ac_cv_openssl_linker_option='(none)'
406
        else
407
            ac_cv_openssl_linker_option=$linked_with
408
        fi
409
        AC_MSG_WARN([I managed to make OpenSSL link and run, but I couldn't make it link against the same version I found header files for.])
410
411
412
      fi
    fi
    LDFLAGS="$saved_LDFLAGS"
413
])
414

415
if test "$ac_cv_openssl_linker_option" != '(none)' ; then
416
   LDFLAGS="$ac_cv_openssl_linker_option $LDFLAGS"
417
fi
418
fi
419
420

dnl Make sure to enable support for large off_t if avalable.
421

422
423
AC_SYS_LARGEFILE

Nick Mathewson's avatar
Nick Mathewson committed
424
425
dnl The warning message here is no longer strictly accurate.

426
427
428
AC_CHECK_HEADERS(unistd.h string.h signal.h ctype.h sys/stat.h sys/types.h fcntl.h sys/fcntl.h sys/time.h errno.h assert.h time.h, , AC_MSG_WARN(some headers were not found, compilation may fail))

AC_CHECK_HEADERS(netdb.h sys/ioctl.h sys/socket.h arpa/inet.h netinet/in.h pwd.h grp.h)
429

430
AC_CHECK_HEADERS(event.h, , AC_MSG_ERROR(Libevent header (event.h) not found. Tor requires libevent to build.),
431
432
433
434
435
436
437
438
439
440
441
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
  struct timeval {
    long tv_sec;
    long tv_usec;
 };
#endif])
442

443
444
AC_CHECK_HEADERS(zlib.h, , AC_MSG_ERROR(Zlib header (zlib.h) not found. Tor requires zlib to build. You may need to install a zlib development package.))

445
446
dnl These headers are not essential

447
AC_CHECK_HEADERS(stdint.h sys/types.h inttypes.h sys/param.h sys/wait.h limits.h sys/limits.h netinet/in.h arpa/inet.h machine/limits.h syslog.h sys/time.h sys/resource.h inttypes.h utime.h sys/utime.h sys/mman.h)
448

449
AC_CHECK_HEADERS(net/if.h, [net_if_found=1], [net_if_found=0],
450
451
452
453
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
454
455
456
#include <sys/socket.h>
#endif])
AC_CHECK_HEADERS(net/pfvar.h, [net_pfvar_found=1], [net_pfvar_found=0],
457
458
459
460
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
461
#include <sys/socket.h>
462
463
464
#endif
#ifdef HAVE_NET_IF_H
#include <net/if.h>
465
#endif])
466
AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
467
468
469
470
        [linux_netfilter_ipv4=1], [linux_netfilter_ipv4=0],
[#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif])
471

472
AC_CHECK_FUNCS(gettimeofday ftime socketpair uname inet_aton strptime getrlimit strlcat strlcpy strtoull ftello getaddrinfo localtime_r gmtime_r event_get_version event_get_method event_set_log_callback memmem strtok_r)
473
474
475
476
477

if test $enable_threads = "yes"; then
  AC_CHECK_HEADERS(pthread.h)
  AC_CHECK_FUNCS(pthread_create)
fi
Felipe Bergo's avatar
Felipe Bergo committed
478

479
480
481
482
483
484
485
486
if test x$transparent = xtrue ; then
   transparent_ok=0
   if test x$net_if_found = x1 -a x$net_pfvar_found = x1 ; then
     transparent_ok=1
   fi
   if test x$linux_netfilter_ipv4 = x1 ; then
     transparent_ok=1
   fi
487
   if test x$transparent_ok = x1 ; then
488
489
490
491
492
493
494
495
496
497
     AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
     case $host in
       *-*-openbsd*)
         AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
     esac
   else
     AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
   fi
fi

498
AC_FUNC_FSEEKO
499

500
501
AC_CHECK_MEMBERS([struct timeval.tv_sec])

502
503
504
dnl In case we aren't given a working stdint.h, we'll need to grow our own.
dnl Watch out.

505
506
507
508
509
510
511
512
AC_CHECK_SIZEOF(int8_t)
AC_CHECK_SIZEOF(int16_t)
AC_CHECK_SIZEOF(int32_t)
AC_CHECK_SIZEOF(int64_t)
AC_CHECK_SIZEOF(uint8_t)
AC_CHECK_SIZEOF(uint16_t)
AC_CHECK_SIZEOF(uint32_t)
AC_CHECK_SIZEOF(uint64_t)
513
514
AC_CHECK_SIZEOF(intptr_t)
AC_CHECK_SIZEOF(uintptr_t)
515

516
dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
517

518
519
520
521
522
523
AC_CHECK_SIZEOF(char)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long)
AC_CHECK_SIZEOF(__int64)
524
AC_CHECK_SIZEOF(void *)
525
AC_CHECK_SIZEOF(time_t)
526
AC_CHECK_SIZEOF(size_t)
527

528
529
AC_CHECK_TYPES([uint, u_char])

530
if test -z "$CROSS_COMPILE"; then
531
532
533
534
535
AC_CACHE_CHECK([whether time_t is signed], tor_cv_time_t_signed, [
AC_TRY_RUN([
int main(int c, char**v) { if (((time_t)-1)<0) return 1; else return 0; }],
  tor_cv_time_t_signed=no, tor_cv_time_t_signed=yes)
])
536
537
538
539
540
else
  # Cross-compiling; let's hope the target platform isn't loony.
  AC_MSG_NOTICE([Cross compiling: assuming that time_t is signed.])
  tor_cv_time_t_signed=yes
fi
541
542
543
544
545
546

if test $tor_cv_time_t_signed = yes; then
  AC_DEFINE([TIME_T_IS_SIGNED], 1,
            [Define to 1 iff time_t is signed])
fi

547
548
549
550
551
AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
])
552

553
554
555
556
# We want to make sure that we _don't_ have a cell_t defined, like IRIX does.

AC_CHECK_SIZEOF(cell_t)

557
# Now make sure that NULL can be represented as zero bytes.
558
if test -z "$CROSS_COMPILE"; then
559
560
561
AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
[AC_RUN_IFELSE([AC_LANG_SOURCE(
[[#include <stdlib.h>
562
#include <string.h>
563
564
565
566
#include <stdio.h>
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
567
int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
568
return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
569
570
571
572
       [tor_cv_null_is_zero=yes],
       [tor_cv_null_is_zero=no],
       [tor_cv_null_is_zero=cross])])

573
574
575
576
577
578
else
  # Cross-compiling; let's hope that the target isn't raving mad.
  AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  tor_cv_null_is_zero=yes
fi

579
580
581
582
583
if test $tor_cv_null_is_zero = yes; then
  AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
            [Define to 1 iff memset(0) sets pointers to NULL])
fi

584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
# And what happens when we malloc zero?

if test -z "$CROSS_COMPILE"; then
AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
[AC_RUN_IFELSE([AC_LANG_SOURCE(
[[#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
int main () { return malloc(0)?0:1; }]])],
       [tor_cv_malloc_zero_works=yes],
       [tor_cv_malloc_zero_works=no],
       [tor_cv_malloc_zero_works=cross])])

else
  # Cross-compiling; let's hope that the target isn't raving mad.
  AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  tor_cv_malloc_zero_works=no
fi

if test $tor_cv_malloc_zero_works = yes; then
  AC_DEFINE([MALLOC_ZERO_WORKS], 1,
            [Define to 1 iff malloc(0) returns a pointer])
fi

611
612
613
614
615
616
617
618
619
620
621
622
# whether we seem to be in a 2s-complement world.
if test -z "$CROSS_COMPILE"; then
AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
[AC_RUN_IFELSE([AC_LANG_SOURCE(
[[int main () { int problem = ((-99) != (~99)+1);
return problem ? 1 : 0; }]])],
       [tor_cv_twos_complement=yes],
       [tor_cv_twos_complement=no],
       [tor_cv_twos_complement=cross])])

else
  # Cross-compiling; let's hope that the target isn't raving mad.
623
  AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
624
625
626
627
628
629
630
631
  tor_cv_twos_complement=yes
fi

if test $tor_cv_twos_complement = yes; then
  AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
            [Define to 1 iff we represent negative integers with two's complement])
fi

632
# Whether we should use the dmalloc memory allocation debugging library.
Roger Dingledine's avatar
Roger Dingledine committed
633
AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
634
AC_ARG_WITH(dmalloc,
635
[  --with-dmalloc          Use debug memory allocation library. ],
636
637
638
639
640
641
642
643
644
645
[if [[ "$withval" = "yes" ]]; then
  dmalloc=1
  AC_MSG_RESULT(yes)
else
  dmalloc=1
  AC_MSG_RESULT(no)
fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
)

if [[ $dmalloc -eq 1 ]]; then
Peter Palfrader's avatar
Peter Palfrader committed
646
  AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
647
  AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
648
649
650
651
  AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  AC_DEFINE(DMALLOC_FUNC_CHECK, 1, [Enable dmalloc's malloc function check])
fi

652
653
654
655
656
657
658
# Allow user to specify an alternate syslog facility
AC_ARG_WITH(syslog-facility,
[  --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
syslog_facility="$withval", syslog_facility="LOG_DAEMON")
AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
AC_SUBST(LOGFACILITY)

659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
# Check for gethostbyname_r in all its glorious incompatible versions.
#   (This logic is based on that in Python's configure.in)
AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  [Define this if you have any gethostbyname_r()])

AC_CHECK_FUNC(gethostbyname_r, [
  AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  OLD_CFLAGS=$CFLAGS
  CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  AC_TRY_COMPILE([
#include <netdb.h>
  ], [
    char *cp1, *cp2;
    struct hostent *h1, *h2;
    int i1, i2;
    (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  ], [
    AC_DEFINE(HAVE_GETHOSTBYNAME_R)
    AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
     [Define this if gethostbyname_r takes 6 arguments])
    AC_MSG_RESULT(6)
  ], [
    AC_TRY_COMPILE([
#include <netdb.h>
    ], [
      char *cp1, *cp2;
      struct hostent *h1;
      int i1, i2;
      (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
    ], [
      AC_DEFINE(HAVE_GETHOSTBYNAME_R)
      AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
        [Define this if gethostbyname_r takes 5 arguments])
      AC_MSG_RESULT(5)
   ], [
      AC_TRY_COMPILE([
#include <netdb.h>
     ], [
       char *cp1;
       struct hostent *h1;
       struct hostent_data hd;
       (void) gethostbyname_r(cp1,h1,&hd);
     ], [
       AC_DEFINE(HAVE_GETHOSTBYNAME_R)
       AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
         [Define this if gethostbyname_r takes 3 arguments])
       AC_MSG_RESULT(3)
     ], [
       AC_MSG_RESULT(0)
     ])
  ])
 ])
 CFLAGS=$OLD_CFLAGS
])

714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
AC_CACHE_CHECK([whether the C compiler supports __func__],
  ac_cv_have_func_macro,
  AC_COMPILE_IFELSE([
#include <stdio.h>
int main(int c, char **v) { puts(__func__); }],
  ac_cv_have_func_macro=yes,
  ac_cv_have_func_macro=no))

AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  ac_cv_have_FUNC_macro,
  AC_COMPILE_IFELSE([
#include <stdio.h>
int main(int c, char **v) { puts(__FUNC__); }],
  ac_cv_have_FUNC_macro=yes,
  ac_cv_have_FUNC_macro=no))

AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  ac_cv_have_FUNCTION_macro,
  AC_COMPILE_IFELSE([
#include <stdio.h>
int main(int c, char **v) { puts(__FUNCTION__); }],
  ac_cv_have_FUNCTION_macro=yes,
  ac_cv_have_FUNCTION_macro=no))

if test $ac_cv_have_func_macro = 'yes'; then
  AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
fi

if test $ac_cv_have_FUNC_macro = 'yes'; then
  AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
fi

if test $ac_cv_have_FUNCTION_macro = 'yes'; then
  AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
           [Defined if the compiler supports __FUNCTION__])
fi

751
752
753
754
755
756
757
758
759
760
761
762
# $prefix stores the value of the --prefix command line option, or
# NONE if the option wasn't set.  In the case that it wasn't set, make
# it be the default, so that we can use it to expand directories now.
if test "x$prefix" = "xNONE"; then
  prefix=$ac_default_prefix
fi

# and similarly for $exec_prefix
if test "x$exec_prefix" = "xNONE"; then
  exec_prefix=$prefix
fi

763
764
765
if test "x$CONFDIR" = "x"; then
  CONFDIR=`eval echo $sysconfdir/tor`
fi
766
AC_SUBST(CONFDIR)
767
AH_TEMPLATE([CONFDIR],[tor's configuration directory])
768
769
770
771
772
773
774
AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")

BINDIR=`eval echo $bindir`
AC_SUBST(BINDIR)

LOCALSTATEDIR=`eval echo $localstatedir`
AC_SUBST(LOCALSTATEDIR)
775
AH_TEMPLATE([LOCALSTATEDIR], [Default location to store state files.])
776
AC_DEFINE_UNQUOTED(LOCALSTATEDIR,"$LOCALSTATEDIR")
777

778
779
# Set CFLAGS _after_ all the above checks, since our warnings are stricter
# than autoconf's macros like.
780
781
782
783
if test $ac_cv_c_compiler_gnu = yes; then
  CFLAGS="$CFLAGS -Wall -g -O2"
else
  CFLAGS="$CFLAGS -g -O"
784
  enable_gcc_warnings=no
785
fi
786

787
# Add some more warnings which we use in the cvs version but not in the
788
# released versions.  (Some relevant gcc versions can't handle these.)
789
if test x$enable_gcc_warnings = xyes; then
790

791
792
793
794
795
  AC_TRY_COMPILE([], [
#if !defined(__GNUC__) || (__GNUC__ < 4)
#error
#endif], have_gcc4=yes, have_gcc4=no)

796
  CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2 -Wwrite-strings -Waggregate-return -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum -Werror"
797
798
799
800
801

  if test x$have_gcc4 = xyes ; then 
    # These warnings break gcc 3.3.5 and work on gcc 4.0.2
    CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement -Wold-style-definition"
  fi
802
803
804
805

##This will break the world on some 64-bit architectures
# CFLAGS="$CFLAGS -Winline"

806
fi
807

808
AC_OUTPUT(Makefile tor.spec contrib/tor.sh contrib/torctl contrib/torify contrib/tor.logrotate contrib/Makefile contrib/osx/Makefile contrib/osx/TorBundleDesc.plist contrib/osx/TorBundleInfo.plist contrib/osx/TorDesc.plist contrib/osx/TorInfo.plist contrib/osx/TorStartupDesc.plist src/config/torrc.sample doc/tor.1 src/Makefile doc/Makefile doc/design-paper/Makefile src/config/Makefile src/common/Makefile src/or/Makefile src/win32/Makefile src/tools/Makefile contrib/suse/Makefile contrib/suse/tor.sh)
809
810
811
812
813

if test -x /usr/bin/perl && test -x ./contrib/updateVersions.pl ; then
  ./contrib/updateVersions.pl
fi