configure.in 31 KB
Newer Older
Roger Dingledine's avatar
Roger Dingledine committed
1
dnl Copyright (c) 2001-2004, Roger Dingledine
2
3
dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
dnl Copyright (c) 2007-2008, The Tor Project, Inc.
Nick Mathewson's avatar
Nick Mathewson committed
4
dnl See LICENSE for licensing information
5
6

AC_INIT
7
AM_INIT_AUTOMAKE(tor, 0.2.2.34-dev)
8
AM_CONFIG_HEADER(orconfig.h)
9

10
11
AC_CANONICAL_HOST

12
if test -f /etc/redhat-release ; then
13
  if test -f /usr/kerberos/include ; then
14
    CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
15
  fi
16
fi
17

18
19
# Not a no-op; we want to make sure that CPPFLAGS is set before we use
# the += operator on it in src/or/Makefile.am
20
CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
21

22
23
24
#XXXX020 We should make these enabled or not, before 0.2.0.x-final
AC_ARG_ENABLE(buf-freelists,
   AS_HELP_STRING(--disable-buf-freelists, disable freelists for buffer RAM))
25
26
AC_ARG_ENABLE(openbsd-malloc,
   AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd.  Linux only))
27
28
AC_ARG_ENABLE(instrument-downloads,
   AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
29
30
31
32
AC_ARG_ENABLE(static-openssl,
   AS_HELP_STRING(--enable-static-openssl, Link against a static openssl library. Requires --with-openssl-dir))
AC_ARG_ENABLE(static-libevent,
   AS_HELP_STRING(--enable-static-libevent, Link against a static libevent library. Requires --with-libevent-dir))
33
34
AC_ARG_ENABLE(static-zlib,
   AS_HELP_STRING(--enable-static-zlib, Link against a static zlib library. Requires --with-zlib-dir))
35

36
37
38
39
if test x$enable_buf_freelists != xno; then
  AC_DEFINE(ENABLE_BUF_FREELISTS, 1,
            [Defined if we try to use freelists for buffer RAM chunks])
fi
40
AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
41
if test x$enable_instrument_downloads = xyes; then
42
43
44
  AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
            [Defined if we want to keep track of how much of each kind of resource we download.])
fi
45

46
AC_ARG_ENABLE(transparent,
47
     AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
48
49
50
51
52
53
     [case "${enableval}" in
        yes) transparent=true ;;
        no)  transparent=false ;;
        *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
      esac], [transparent=true])

54
55
56
57
58
59
60
61
62
AC_ARG_ENABLE(asciidoc,
     AS_HELP_STRING(--disable-asciidoc, don't use asciidoc (disables building of manpages)),
     [case "${enableval}" in
        yes) asciidoc=true ;;
        no)  asciidoc=false ;;
        *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
      esac], [asciidoc=true])


Nick Mathewson's avatar
Nick Mathewson committed
63
AC_ARG_ENABLE(threads,
64
     AS_HELP_STRING(--disable-threads, disable multi-threading support))
Nick Mathewson's avatar
Nick Mathewson committed
65
66

if test x$enable_threads = x; then
67
   case $host in
68
69
70
71
72
    *-*-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
73
74
75
76
77
    *)
     enable_threads="yes";;
   esac
fi

78
if test "$enable_threads" = "yes"; then
Nick Mathewson's avatar
Nick Mathewson committed
79
80
81
  AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
fi

82
83
84
85
86
87
case $host in
   *-*-solaris* )
     AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
     ;;
esac

88
AC_ARG_ENABLE(gcc-warnings,
89
     AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
90
91
AC_ARG_ENABLE(gcc-warnings-advisory,
     AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
92

93
94
95
96
97
98
99
100
dnl Adam shostack suggests the following for Windows:
dnl -D_FORTIFY_SOURCE=2 -fstack-protector-all
dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
dnl This requires that we use gcc and that we add -O2 to the CFLAGS.
AC_ARG_ENABLE(gcc-hardening,
     AS_HELP_STRING(--enable-gcc-hardening, enable compiler security checks),
[if test x$enableval = xyes; then
    CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2 -fstack-protector-all"
101
    CFLAGS="$CFLAGS -fwrapv -fPIE -Wstack-protector"
102
    CFLAGS="$CFLAGS --param ssp-buffer-size=1"
Linus Nordberg's avatar
Linus Nordberg committed
103
    LDFLAGS="$LDFLAGS -pie"
104
105
106
107
108
109
110
fi])

dnl Linker hardening options
dnl Currently these options are ELF specific - you can't use this with MacOSX
AC_ARG_ENABLE(linker-hardening,
        AS_HELP_STRING(--enable-linker-hardening, enable linker security fixups),
[if test x$enableval = xyes; then
Linus Nordberg's avatar
Linus Nordberg committed
111
    LDFLAGS="$LDFLAGS -z relro -z now"
112
113
fi])

114
115
116
117
118
119
120
AC_ARG_ENABLE(local-appdata,
   AS_HELP_STRING(--enable-local-appdata, default to host local application data paths on Windows))
if test "$enable_local_appdata" = "yes"; then
  AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
            [Defined if we default to host local appdata paths on Windows])
fi

121
122
123
124
125
126
dnl check for the correct "ar" when cross-compiling
AN_MAKEVAR([AR], [AC_PROG_AR])
AN_PROGRAM([ar], [AC_PROG_AR])
AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
AC_PROG_AR

127
AC_PROG_CC
128
AC_PROG_CPP
129
130
AC_PROG_MAKE_SET
AC_PROG_RANLIB
131
132
133

dnl autoconf 2.59 appears not to support AC_PROG_SED
AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
134

135
136
137
dnl check for asciidoc and a2x
AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
AC_PATH_PROG([A2X], [a2x], none)
138
139

AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
140

141
142
AC_PATH_PROG([SHA1SUM], [sha1sum], none)
AC_PATH_PROG([OPENSSL], [openssl], none)
143

144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
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)

162
163
164

dnl If WIN32 is defined and non-zero, we are building for win32
AC_MSG_CHECKING([for win32])
165
AC_RUN_IFELSE([AC_LANG_SOURCE([
166
int main(int c, char **v) {
167
168
169
170
171
172
173
174
175
#ifdef WIN32
#if WIN32
  return 0;
#else
  return 1;
#endif
#else
  return 2;
#endif
176
}])],
177
bwin32=true; AC_MSG_RESULT([yes]),
178
179
bwin32=false; AC_MSG_RESULT([no]),
bwin32=cross; AC_MSG_RESULT([cross])
180
181
)

182
if test "$bwin32" = cross; then
183
AC_MSG_CHECKING([for win32 (cross)])
184
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
185
186
187
188
189
190
#ifdef WIN32
int main(int c, char **v) {return 0;}
#else
#error
int main(int c, char **v) {return x(y);}
#endif
191
])],
192
193
194
195
bwin32=true; AC_MSG_RESULT([yes]),
bwin32=false; AC_MSG_RESULT([no]))
fi

196
if test "$bwin32" = true; then
197
198
AC_DEFINE(MS_WINDOWS, 1, [Define to 1 if we are building for Windows.])
fi
199
AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
200

201
202
dnl Enable C99 when compiling with MIPSpro
AC_MSG_CHECKING([for MIPSpro compiler])
203
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
204
205
206
207
#if (defined(__sgi) && defined(_COMPILER_VERSION))
#error
  return x(y);
#endif
208
])],
209
bmipspro=false; AC_MSG_RESULT(no),
210
bmipspro=true; AC_MSG_RESULT(yes))
211

212
if test "$bmipspro" = true; then
213
214
215
  CFLAGS="$CFLAGS -c99"
fi

216
217
AC_C_BIGENDIAN

218
AC_SEARCH_LIBS(socket, [socket])
219
AC_SEARCH_LIBS(gethostbyname, [nsl])
220
AC_SEARCH_LIBS(dlopen, [dl])
221
AC_SEARCH_LIBS(inet_aton, [resolv])
222

223
if test "$enable_threads" = "yes"; then
224
225
226
  AC_SEARCH_LIBS(pthread_create, [pthread])
  AC_SEARCH_LIBS(pthread_detach, [pthread])
fi
227

228
229
230
231
dnl -------------------------------------------------------------------
dnl Check for functions before libevent, since libevent-1.2 apparently
dnl exports strlcpy without defining it in a header.

232
AC_CHECK_FUNCS(gettimeofday ftime socketpair uname inet_aton strptime getrlimit strlcat strlcpy strtoull getaddrinfo localtime_r gmtime_r memmem strtok_r writev readv flock prctl vasprintf lround rint)
233
234
235
236
237
238
239
240
241
242
243
244

using_custom_malloc=no
if test x$enable_openbsd_malloc = xyes ; then
   AC_DEFINE(HAVE_MALLOC_GOOD_SIZE, 1, [Defined if we have the malloc_good_size function])
   using_custom_malloc=yes
fi
if test x$tcmalloc = xyes ; then
   using_custom_malloc=yes
fi
if test $using_custom_malloc = no ; then
   AC_CHECK_FUNCS(mallinfo malloc_good_size malloc_usable_size)
fi
245

246
if test "$enable_threads" = "yes"; then
247
248
249
250
  AC_CHECK_HEADERS(pthread.h)
  AC_CHECK_FUNCS(pthread_create)
fi

251
dnl ------------------------------------------------------
252
dnl Where do you live, libevent?  And how do we call you?
253

254
if test "$bwin32" = true; then
255
256
257
  TOR_LIB_WS32=-lws2_32
  # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  # think it's actually necessary.
258
  TOR_LIB_GDI=-lgdi32
Nick Mathewson's avatar
   
Nick Mathewson committed
259
else
260
261
  TOR_LIB_WS32=
  TOR_LIB_GDI=
Nick Mathewson's avatar
   
Nick Mathewson committed
262
fi
263
264
AC_SUBST(TOR_LIB_WS32)
AC_SUBST(TOR_LIB_GDI)
Nick Mathewson's avatar
   
Nick Mathewson committed
265

266
267
268
269
dnl We need to do this before we try our disgusting hack below.
AC_CHECK_HEADERS([sys/types.h])

dnl This is a disgusting hack so we safely include older libevent headers.
270
271
272
273
274
AC_CHECK_TYPE(u_int64_t, unsigned long long)
AC_CHECK_TYPE(u_int32_t, unsigned long)
AC_CHECK_TYPE(u_int16_t, unsigned short)
AC_CHECK_TYPE(u_int8_t, unsigned char)

275
tor_libevent_pkg_redhat="libevent"
276
tor_libevent_pkg_debian="libevent-dev"
277
278
279
tor_libevent_devpkg_redhat="libevent-devel"
tor_libevent_devpkg_debian="libevent-dev"

280
281
282
283
284
285
286
287
288
289
290
291
292
dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
dnl linking for static builds.
STATIC_LIBEVENT_FLAGS=""
if test "$enable_static_libevent" = "yes"; then
    dnl Determine if we have clock_gettime in librt
    AC_SEARCH_LIBS([clock_gettime], [rt],
        [have_rt=yes])
    if test "$have_rt" = yes; then
      STATIC_LIBEVENT_FLAGS=" -lrt "
    fi
fi

TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
293
294
295
#ifdef WIN32
#include <winsock2.h>
#endif
296
#include <stdlib.h>
297
#include <sys/time.h>
Roger Dingledine's avatar
Roger Dingledine committed
298
#include <sys/types.h>
299
300
301
302
303
#include <event.h>], [
#ifdef WIN32
#include <winsock2.h>
#endif
void exit(int); void *event_init(void);],
304
305
    [
#ifdef WIN32
306
{WSADATA d; WSAStartup(0x101,&d); }
307
308
309
#endif
event_init(); exit(0);
], [--with-libevent-dir], [/opt/libevent])
310

311
dnl Now check for particular libevent functions.
312
313
save_LIBS="$LIBS"
save_LDFLAGS="$LDFLAGS"
314
save_CPPFLAGS="$CPPFLAGS"
315
LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
316
LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
317
CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
318
AC_CHECK_FUNCS(event_get_version event_get_version_number event_get_method event_set_log_callback evdns_set_outgoing_bind_address event_base_loopexit)
319
320
321
322
AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
[#include <event.h>
])

323
324
AC_CHECK_HEADERS(event2/event.h event2/dns.h)

325
326
LIBS="$save_LIBS"
LDFLAGS="$save_LDFLAGS"
327
CPPFLAGS="$save_CPPFLAGS"
328

329

330
331
AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)

332
333
334
335
if test "$enable_static_libevent" = "yes"; then
   if test "$tor_cv_library_libevent_dir" = "(system)"; then
     AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
   else
336
     TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
337
338
339
340
341
342
   fi
else
     TOR_LIBEVENT_LIBS="-levent"
fi
AC_SUBST(TOR_LIBEVENT_LIBS)

343

344
dnl ------------------------------------------------------
345
dnl Where do you live, openssl?  And how do we call you?
346

347
348
349
350
351
tor_openssl_pkg_redhat="openssl"
tor_openssl_pkg_debian="libssl"
tor_openssl_devpkg_redhat="openssl-devel"
tor_openssl_devpkg_debian="libssl-dev"

352
353
354
355
356
357
358
359
360
ALT_openssl_WITHVAL=""
AC_ARG_WITH(ssl-dir,
  [  --with-ssl-dir=PATH    Obsolete alias for --with-openssl-dir ],
  [
      if test "x$withval" != xno && test "x$withval" != "x" ; then
         ALT_openssl_WITHVAL="$withval"
      fi
  ])

361
TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
362
363
    [#include <openssl/rand.h>],
    [void RAND_add(const void *buf, int num, double entropy);],
364
    [RAND_add((void*)0,0,0); exit(0);], [],
365
    [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
366

367
368
dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()

369
370
371
372
373
echo "tor_cv_library_openssl_dir is $tor_cv_library_openssl_dir"
if test "$enable_static_openssl" = "yes"; then
   if test "$tor_cv_library_openssl_dir" = "(system)"; then
     AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
   else
374
     TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
375
376
   fi
else
377
     TOR_OPENSSL_LIBS="-lssl -lcrypto"
378
379
380
fi
AC_SUBST(TOR_OPENSSL_LIBS)

381
382
383
dnl ------------------------------------------------------
dnl Where do you live, zlib?  And how do we call you?

384
385
386
387
tor_zlib_pkg_redhat="zlib"
tor_zlib_pkg_debian="zlib1g"
tor_zlib_devpkg_redhat="zlib-devel"
tor_zlib_devpkg_debian="zlib1g-dev"
388
389
390
391
392
393
394

TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
    [#include <zlib.h>],
    [const char * zlibVersion(void);],
    [zlibVersion(); exit(0);], [--with-zlib-dir],
    [/opt/zlib])

395
396
397
398
399
400
401
402
403
404
405
406
407
if test "$enable_static_zlib" = "yes"; then
   if test "$tor_cv_library_zlib_dir" = "(system)"; then
     AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
 using --enable-static-zlib")
   else
     TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
     echo "$TOR_LIBDIR_zlib/libz.a"
   fi
else
     TOR_ZLIB_LIBS="-lz"
fi
AC_SUBST(TOR_ZLIB_LIBS)

Roger Dingledine's avatar
Roger Dingledine committed
408
dnl Make sure to enable support for large off_t if available.
409

410
411
AC_SYS_LARGEFILE

412
AC_CHECK_HEADERS(unistd.h string.h signal.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.  If compilation succeeds, please send your orconfig.h to the developers so we can fix this warning.))
413

414
AC_CHECK_HEADERS(netdb.h sys/ioctl.h sys/socket.h arpa/inet.h netinet/in.h pwd.h grp.h sys/un.h sys/uio.h)
415

416
417
dnl These headers are not essential

418
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 netinet/in6.h malloc.h sys/syslimits.h malloc/malloc.h linux/types.h sys/file.h malloc_np.h sys/prctl.h)
419

420
421
422
423
424
425
426
427
TOR_CHECK_PROTOTYPE(malloc_good_size, HAVE_MALLOC_GOOD_SIZE_PROTOTYPE,
[#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#ifdef HAVE_MALLOC_MALLOC_H
#include <malloc/malloc.h>
#endif])

428
AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
429
430
431
432
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
433
434
#include <sys/socket.h>
#endif])
435
AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
436
437
438
439
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
440
#include <sys/socket.h>
441
442
443
#endif
#ifdef HAVE_NET_IF_H
#include <net/if.h>
444
#endif])
445
AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
446
        linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
447
448
449
450
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
451
#include <sys/socket.h>
452
#endif
453
454
455
456
457
458
459
460
461
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#ifdef HAVE_LINUX_TYPES_H
#include <linux/types.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif
462
463
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
464
#endif])
465
466
467

if test x$transparent = xtrue ; then
   transparent_ok=0
468
   if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
469
470
471
472
473
     transparent_ok=1
   fi
   if test x$linux_netfilter_ipv4 = x1 ; then
     transparent_ok=1
   fi
474
   if test x$transparent_ok = x1 ; then
475
476
477
478
479
480
481
482
483
484
     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

485
486
487
488
489
490
491
AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif])
492

493
494
495
dnl In case we aren't given a working stdint.h, we'll need to grow our own.
dnl Watch out.

496
497
498
499
500
501
502
503
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)
504
505
AC_CHECK_SIZEOF(intptr_t)
AC_CHECK_SIZEOF(uintptr_t)
506

507
dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
508

509
510
511
512
513
514
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)
515
AC_CHECK_SIZEOF(void *)
516
AC_CHECK_SIZEOF(time_t)
517
AC_CHECK_SIZEOF(size_t)
518

519
AC_CHECK_TYPES([uint, u_char, ssize_t])
520

521
522
dnl used to include sockaddr_storage, but everybody has that.
AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
523
524
525
526
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
527
528
529
530
531
532
533
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
534
535
536
537
538
539
540
541
542
543
544
545
546
#endif
#ifdef MS_WINDOWS
#define WIN32_WINNT 0x400
#define _WIN32_WINNT 0x400
#define WIN32_LEAN_AND_MEAN
#if defined(_MSC_VER) && (_MSC_VER < 1300)
#include <winsock.h>
#else
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#endif
])
547
AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef MS_WINDOWS
#define WIN32_WINNT 0x400
#define _WIN32_WINNT 0x400
#define WIN32_LEAN_AND_MEAN
#if defined(_MSC_VER) && (_MSC_VER < 1300)
#include <winsock.h>
#else
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#endif
])
572

573
AC_CHECK_TYPES([rlim_t], , ,
574
575
576
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
577
578
579
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
580
#ifdef HAVE_SYS_RESOURCE_H
581
582
583
584
#include <sys/resource.h>
#endif
])

585
AC_CACHE_CHECK([whether time_t is signed], tor_cv_time_t_signed, [
586
AC_RUN_IFELSE([AC_LANG_SOURCE([
587
588
589
590
591
592
593
594
595
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif
596
597
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, tor_cv_time_t_signed=cross)
598
])
599
600

if test "$tor_cv_time_t_signed" = cross; then
601
602
  AC_MSG_NOTICE([Cross compiling: assuming that time_t is signed.])
fi
603

604
if test "$tor_cv_time_t_signed" != no; then
605
606
607
608
  AC_DEFINE([TIME_T_IS_SIGNED], 1,
            [Define to 1 iff time_t is signed])
fi

609
AC_CACHE_CHECK([whether size_t is signed], tor_cv_size_t_signed, [
Sebastian Hahn's avatar
Sebastian Hahn committed
610
AC_RUN_IFELSE([AC_LANG_SOURCE([
611
612
613
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
Sebastian Hahn's avatar
Sebastian Hahn committed
614
int main(int c, char**v) { if (((size_t)-1)<0) return 1; else return 0; }])],
615
616
617
618
619
620
621
622
623
624
625
  tor_cv_size_t_signed=no, tor_cv_size_t_signed=yes, tor_cv_size_t_signed=cross)
])

if test "$tor_cv_size_t_signed" = cross; then
  AC_MSG_NOTICE([Cross compiling: assuming that size_t is not signed.])
fi

if test "$tor_cv_size_t_signed" = yes; then
  AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
fi

626
627
628
629
630
AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
])
631

632
633
634
635
# We want to make sure that we _don't_ have a cell_t defined, like IRIX does.

AC_CHECK_SIZEOF(cell_t)

636
637
638
639
# Now make sure that NULL can be represented as zero bytes.
AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
[AC_RUN_IFELSE([AC_LANG_SOURCE(
[[#include <stdlib.h>
640
#include <string.h>
641
642
643
644
#include <stdio.h>
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
645
int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
646
return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
647
648
649
650
       [tor_cv_null_is_zero=yes],
       [tor_cv_null_is_zero=no],
       [tor_cv_null_is_zero=cross])])

651
if test "$tor_cv_null_is_zero" = cross ; then
652
653
654
655
  # 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.])
fi

656
if test "$tor_cv_null_is_zero" != no; then
657
658
659
660
  AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
            [Define to 1 iff memset(0) sets pointers to NULL])
fi

661
662
663
664
665
666
667
668
669
670
671
672
673
674
# And what happens when we malloc zero?
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])])

675
if test "$tor_cv_malloc_zero_works" = cross; then
676
677
678
679
  # 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.])
fi

680
if test "$tor_cv_malloc_zero_works" = yes; then
681
682
683
684
  AC_DEFINE([MALLOC_ZERO_WORKS], 1,
            [Define to 1 iff malloc(0) returns a pointer])
fi

685
686
687
688
689
690
691
692
693
# whether we seem to be in a 2s-complement world.
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])])

694
if test "$tor_cv_twos_complement" = cross ; then
695
  # Cross-compiling; let's hope that the target isn't raving mad.
696
  AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
697
698
fi

699
if test "$tor_cv_twos_complement" != no ; then
700
701
702
703
  AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
            [Define to 1 iff we represent negative integers with two's complement])
fi

704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
# What does shifting a negative value do?
AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
[AC_RUN_IFELSE([AC_LANG_SOURCE(
[[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
       [tor_cv_sign_extend=yes],
       [tor_cv_sign_extend=no],
       [tor_cv_sign_extend=cross])])

if test "$tor_cv_sign_extend" = cross ; then
  # Cross-compiling; let's hope that the target isn't raving mad.
  AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
fi

if test "$tor_cv_sign_extend" != no ; then
  AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
            [Define to 1 iff right-shifting a negative value performs sign-extension])
fi

722
# Whether we should use the dmalloc memory allocation debugging library.
Roger Dingledine's avatar
Roger Dingledine committed
723
AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
724
AC_ARG_WITH(dmalloc,
725
[  --with-dmalloc          Use debug memory allocation library. ],
726
727
728
729
730
731
732
733
734
735
[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
736
  AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
737
  AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
738
739
  AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  AC_DEFINE(DMALLOC_FUNC_CHECK, 1, [Enable dmalloc's malloc function check])
740
  AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
741
742
fi

743
744
745
746
747
748
749
750
AC_ARG_WITH(tcmalloc,
[  --with-tcmalloc         Use tcmalloc memory allocation library. ],
[ tcmalloc=yes ], [ tcmalloc=no ])

if test x$tcmalloc = xyes ; then
   LDFLAGS="-ltcmalloc $LDFLAGS"
fi

751
# By default, we're going to assume we don't have mlockall()
Nick Mathewson's avatar
Nick Mathewson committed
752
753
754
# bionic and other platforms have various broken mlockall subsystems.
# Some systems don't have a working mlockall, some aren't linkable,
# and some have it but don't declare it.
755
AC_CHECK_FUNCS(mlockall)
Nick Mathewson's avatar
Nick Mathewson committed
756
757
758
759
AC_CHECK_DECLS([mlockall], , , [
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif])
760

761
762
763
764
765
766
767
# 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)

768
769
770
# Check if we have getresuid and getresgid
AC_CHECK_FUNCS(getresuid getresgid)

771
772
773
774
775
776
777
778
779
# 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 $MY_CFLAGS"
780
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
781
#include <netdb.h>
782
  ], [[
783
784
785
786
    char *cp1, *cp2;
    struct hostent *h1, *h2;
    int i1, i2;
    (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
787
  ]])],[
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
    AC_DEFINE(HAVE_GETHOSTBYNAME_R)
    AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
     [Define this if gethostbyname_r takes 6 arguments])
    AC_MSG_RESULT(6)
  ], [
    AC_TRY_COMPILE([
#include <netdb.h>
    ], [
      char *cp1, *cp2;
      struct hostent *h1;
      int i1, i2;
      (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
    ], [
      AC_DEFINE(HAVE_GETHOSTBYNAME_R)
      AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
        [Define this if gethostbyname_r takes 5 arguments])
      AC_MSG_RESULT(5)
   ], [
      AC_TRY_COMPILE([
#include <netdb.h>
     ], [
       char *cp1;
       struct hostent *h1;
       struct hostent_data hd;
       (void) gethostbyname_r(cp1,h1,&hd);
     ], [
       AC_DEFINE(HAVE_GETHOSTBYNAME_R)
       AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
         [Define this if gethostbyname_r takes 3 arguments])
       AC_MSG_RESULT(3)
     ], [
       AC_MSG_RESULT(0)
     ])
  ])
 ])
 CFLAGS=$OLD_CFLAGS
])

826
AC_CACHE_CHECK([whether the C compiler supports __func__],
827
  tor_cv_have_func_macro,
828
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
829
#include <stdio.h>
830
int main(int c, char **v) { puts(__func__); }])],
831
832
  tor_cv_have_func_macro=yes,
  tor_cv_have_func_macro=no))
833
834

AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
835
  tor_cv_have_FUNC_macro,
836
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
837
#include <stdio.h>
838
int main(int c, char **v) { puts(__FUNC__); }])],
839
840
  tor_cv_have_FUNC_macro=yes,
  tor_cv_have_FUNC_macro=no))
841
842

AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
843
  tor_cv_have_FUNCTION_macro,
844
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
845
#include <stdio.h>
846
int main(int c, char **v) { puts(__FUNCTION__); }])],
847
848
  tor_cv_have_FUNCTION_macro=yes,
  tor_cv_have_FUNCTION_macro=no))
849

850
if test "$tor_cv_have_func_macro" = 'yes'; then
851
852
853
  AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
fi

854
if test "$tor_cv_have_FUNC_macro" = 'yes'; then
855
856
857
  AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
fi

858
if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
859
860
861
862
  AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
           [Defined if the compiler supports __FUNCTION__])
fi

863
864
865
866
867
868
869
870
871
872
873
874
# $prefix stores the value of the --prefix command line option, or
# NONE if the option wasn't set.  In the case that it wasn't set, make
# it be the default, so that we can use it to expand directories now.
if test "x$prefix" = "xNONE"; then
  prefix=$ac_default_prefix
fi

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

875
876
877
if test "x$CONFDIR" = "x"; then
  CONFDIR=`eval echo $sysconfdir/tor`
fi
878
AC_SUBST(CONFDIR)
879
AH_TEMPLATE([CONFDIR],[tor's configuration directory])
880
881
AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")

882
883
884
885
886
BINDIR=`eval echo $bindir`
AC_SUBST(BINDIR)
LOCALSTATEDIR=`eval echo $localstatedir`
AC_SUBST(LOCALSTATEDIR)

887
888
889
890
891
892
893
894
895
896
897
898
899
900
if test "$bwin32" = true; then
  # Test if the linker supports the --nxcompat and --dynamicbase options
  # for Windows
  save_LDFLAGS="$LDFLAGS"
  LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
    [AC_MSG_RESULT([yes])]
    [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
    [AC_MSG_RESULT([no])]
  )
  LDFLAGS="$save_LDFLAGS"
fi

901
902
# Set CFLAGS _after_ all the above checks, since our warnings are stricter
# than autoconf's macros like.
903
904
905
if test "$GCC" = yes; then
  # Disable GCC's strict aliasing checks.  They are an hours-to-debug
  # accident waiting to happen.
906
  CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
907
else
908
909
910
  # Autoconf sets -g -O2 by default. Override optimization level
  # for non-gcc compilers
  CFLAGS="$CFLAGS -O"
911
  enable_gcc_warnings=no
912
  enable_gcc_warnings_advisory=no
913
fi
914

915
916
917
918
919
920
921
922
923
# OS X Lion started deprecating the system openssl. Let's just disable
# all deprecation warnings on OS X.
case "$host_os" in

 darwin*)
    CFLAGS="$CFLAGS -Wno-deprecated-declarations"
    ;;
esac

924
# Add some more warnings which we use in development but not in the
925
# released versions.  (Some relevant gcc versions can't handle these.)
926
if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
927

928
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
929
930
#if !defined(__GNUC__) || (__GNUC__ < 4)
#error
931
#endif])], have_gcc4=yes, have_gcc4=no)
932

933
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
934
#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
935
#error
936
#endif])], have_gcc42=yes, have_gcc42=no)
937

938
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
939
940
#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
#error
941
#endif])], have_gcc43=yes, have_gcc43=no)
942

943
944
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
#if !defined(__clang__)
945
#error
946
#endif])], have_clang=yes, have_clang=no)
947

948
949
  save_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS -Wshorten-64-to-32"
950
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
951
952
953
                    have_shorten64_flag=no)
  CFLAGS="$save_CFLAGS"

954
955
956
957
958
959
960
961
962
  case $host in
    *-*-openbsd*)
      # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
      # That's fine, except that the headers don't pass -Wredundant-decls.
      # Therefore, let's disable -Wsystem-headers when we're building
      # with maximal warnings on OpenBSD.
      CFLAGS="$CFLAGS -Wno-system-headers" ;;
  esac

963
964
965
966
  CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2 -Wwrite-strings -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  if test x$enable_gcc_warnings = xyes; then
    CFLAGS="$CFLAGS -Werror"
  fi
967

968
  # Disabled, so we can use mallinfo(): -Waggregate-return
969

970
  if test x$have_gcc4 = xyes ; then
971
972
973
    # These warnings break gcc 3.3.5 and work on gcc 4.0.2
    CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement -Wold-style-definition"
  fi
974

975
976
977
  if test x$have_gcc42 = xyes ; then 
    # These warnings break gcc 4.0.2 and work on gcc 4.2
    # XXXX020 See if any of these work with earlier versions.
978
979
    CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"

980
981
982
    # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
  fi

983
  if test x$have_gcc42 = xyes && test x$have_clang = xno; then
984
985
986
987
988
    # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
    CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
  fi

  if test x$have_gcc43 = xyes ; then
989
990
991
    # These warnings break gcc 4.2 and work on gcc 4.3
    # XXXX020 See if any of these work with earlier versions.
    CFLAGS="$CFLAGS -Wextra -Warray-bounds"
992
993
  fi

994
995
996
997
  if test x$have_shorten64_flag = xyes ; then
    CFLAGS="$CFLAGS -Wshorten-64-to-32"
  fi

998
999
##This will break the world on some 64-bit architectures
# CFLAGS="$CFLAGS -Winline"
1000
fi