configure.in 35.8 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, 0.2.3.0-alpha-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
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])

62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
# By default, we're not ready to ship a NAT-PMP aware Tor
AC_ARG_ENABLE(nat-pmp,
     AS_HELP_STRING(--enable-nat-pmp, enable NAT-PMP support),
     [case "${enableval}" in
        yes) natpmp=true ;;
        no)  natpmp=false ;;
        * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
      esac], [natpmp=false])

# By default, we're not ready to ship a UPnP aware Tor
AC_ARG_ENABLE(upnp,
     AS_HELP_STRING(--enable-upnp, enable UPnP support),
     [case "${enableval}" in
        yes) upnp=true ;;
        no)  upnp=false ;;
        * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
      esac], [upnp=false])

80

Nick Mathewson's avatar
Nick Mathewson committed
81
AC_ARG_ENABLE(threads,
82
     AS_HELP_STRING(--disable-threads, disable multi-threading support))
Nick Mathewson's avatar
Nick Mathewson committed
83
84

if test x$enable_threads = x; then
85
   case $host in
86
87
88
89
90
    *-*-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
91
92
93
94
95
    *)
     enable_threads="yes";;
   esac
fi

96
if test "$enable_threads" = "yes"; then
Nick Mathewson's avatar
Nick Mathewson committed
97
98
99
  AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
fi

100
101
102
103
104
105
case $host in
   *-*-solaris* )
     AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
     ;;
esac

106
AC_ARG_ENABLE(gcc-warnings,
107
     AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
108
109
AC_ARG_ENABLE(gcc-warnings-advisory,
     AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
110

111
112
113
114
115
116
117
118
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"
119
    CFLAGS="$CFLAGS -fwrapv -fPIE -Wstack-protector"
120
    CFLAGS="$CFLAGS --param ssp-buffer-size=1"
Linus Nordberg's avatar
Linus Nordberg committed
121
    LDFLAGS="$LDFLAGS -pie"
122
123
124
125
126
127
128
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$enableval = xyes; then
Linus Nordberg's avatar
Linus Nordberg committed
129
    LDFLAGS="$LDFLAGS -z relro -z now"
130
131
fi])

132
133
134
135
136
137
138
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

139
140
141
AC_ARG_ENABLE(bufferevents,
     AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))

142
AC_PROG_CC
143
AC_PROG_CPP
144
145
AC_PROG_MAKE_SET
AC_PROG_RANLIB
146
147
148

dnl autoconf 2.59 appears not to support AC_PROG_SED
AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
149

150
151
152
dnl check for asciidoc and a2x
AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
AC_PATH_PROG([A2X], [a2x], none)
153
154

AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
155

156
157
158
159
AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
AM_PROG_CC_C_O
160

161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
AC_C_FLEXIBLE_ARRAY_MEMBER
], [
 dnl Maybe we've got an old autoconf...
 AC_CACHE_CHECK([for flexible array members],
     tor_cv_c_flexarray,
     [AC_COMPILE_IFELSE(
       AC_LANG_PROGRAM([
 struct abc { int a; char b[]; };
], [
 struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
 def->b[0] = 33;
]),
  [tor_cv_c_flexarray=yes],
  [tor_cv_c_flexarray=no])])
 if test $tor_cv_flexarray = yes ; then
   AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [])
 else
   AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1])
 fi
])

183
184
AC_PATH_PROG([SHA1SUM], [sha1sum], none)
AC_PATH_PROG([OPENSSL], [openssl], none)
185

186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
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)

204
205
206

dnl If WIN32 is defined and non-zero, we are building for win32
AC_MSG_CHECKING([for win32])
207
AC_RUN_IFELSE([AC_LANG_SOURCE([
208
int main(int c, char **v) {
209
210
211
212
213
214
215
216
217
#ifdef WIN32
#if WIN32
  return 0;
#else
  return 1;
#endif
#else
  return 2;
#endif
218
}])],
219
bwin32=true; AC_MSG_RESULT([yes]),
220
221
bwin32=false; AC_MSG_RESULT([no]),
bwin32=cross; AC_MSG_RESULT([cross])
222
223
)

224
if test "$bwin32" = cross; then
225
AC_MSG_CHECKING([for win32 (cross)])
226
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
227
228
229
230
231
232
#ifdef WIN32
int main(int c, char **v) {return 0;}
#else
#error
int main(int c, char **v) {return x(y);}
#endif
233
])],
234
235
236
237
bwin32=true; AC_MSG_RESULT([yes]),
bwin32=false; AC_MSG_RESULT([no]))
fi

238
if test "$bwin32" = true; then
239
240
AC_DEFINE(MS_WINDOWS, 1, [Define to 1 if we are building for Windows.])
fi
241
AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
242

243
244
dnl Enable C99 when compiling with MIPSpro
AC_MSG_CHECKING([for MIPSpro compiler])
245
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
246
247
248
249
#if (defined(__sgi) && defined(_COMPILER_VERSION))
#error
  return x(y);
#endif
250
])],
251
bmipspro=false; AC_MSG_RESULT(no),
252
bmipspro=true; AC_MSG_RESULT(yes))
253

254
if test "$bmipspro" = true; then
255
256
257
  CFLAGS="$CFLAGS -c99"
fi

258
259
AC_C_BIGENDIAN

260
AC_SEARCH_LIBS(socket, [socket])
261
AC_SEARCH_LIBS(gethostbyname, [nsl])
262
AC_SEARCH_LIBS(dlopen, [dl])
263
AC_SEARCH_LIBS(inet_aton, [resolv])
264

265
if test "$enable_threads" = "yes"; then
266
267
268
  AC_SEARCH_LIBS(pthread_create, [pthread])
  AC_SEARCH_LIBS(pthread_detach, [pthread])
fi
269

270
271
272
273
dnl -------------------------------------------------------------------
dnl Check for functions before libevent, since libevent-1.2 apparently
dnl exports strlcpy without defining it in a header.

274
AC_CHECK_FUNCS(
275
	accept4 \
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
        flock \
        ftime \
        getaddrinfo \
        getrlimit \
        gettimeofday \
        gmtime_r \
        inet_aton \
        localtime_r \
        memmem \
        prctl \
        socketpair \
        strlcat \
        strlcpy \
        strptime \
        strtok_r \
        strtoull \
        sysconf \
        uname \
        vasprintf \
)
296
297
298
299
300
301
302
303
304
305
306
307

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
308

309
if test "$enable_threads" = "yes"; then
310
311
312
313
  AC_CHECK_HEADERS(pthread.h)
  AC_CHECK_FUNCS(pthread_create)
fi

314
dnl ------------------------------------------------------
315
dnl Where do you live, libevent?  And how do we call you?
316

317
if test "$bwin32" = true; then
318
319
320
  TOR_LIB_WS32=-lws2_32
  # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  # think it's actually necessary.
321
  TOR_LIB_GDI=-lgdi32
Nick Mathewson's avatar
   
Nick Mathewson committed
322
else
323
324
  TOR_LIB_WS32=
  TOR_LIB_GDI=
Nick Mathewson's avatar
   
Nick Mathewson committed
325
fi
326
327
AC_SUBST(TOR_LIB_WS32)
AC_SUBST(TOR_LIB_GDI)
Nick Mathewson's avatar
   
Nick Mathewson committed
328

329
330
331
332
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.
333
334
335
336
337
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)

338
tor_libevent_pkg_redhat="libevent"
339
tor_libevent_pkg_debian="libevent-dev"
340
341
342
tor_libevent_devpkg_redhat="libevent-devel"
tor_libevent_devpkg_debian="libevent-dev"

343
344
345
346
347
348
349
350
351
352
353
354
355
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], [
356
357
358
#ifdef WIN32
#include <winsock2.h>
#endif
359
#include <stdlib.h>
360
#include <sys/time.h>
Roger Dingledine's avatar
Roger Dingledine committed
361
#include <sys/types.h>
362
363
364
365
366
#include <event.h>], [
#ifdef WIN32
#include <winsock2.h>
#endif
void exit(int); void *event_init(void);],
367
368
    [
#ifdef WIN32
369
{WSADATA d; WSAStartup(0x101,&d); }
370
371
372
#endif
event_init(); exit(0);
], [--with-libevent-dir], [/opt/libevent])
373

374
dnl Now check for particular libevent functions.
375
376
save_LIBS="$LIBS"
save_LDFLAGS="$LDFLAGS"
377
save_CPPFLAGS="$CPPFLAGS"
378
LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
379
LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
380
CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
381
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)
382
383
384
385
AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
[#include <event.h>
])

386
AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
387

388
389
LIBS="$save_LIBS"
LDFLAGS="$save_LDFLAGS"
390
CPPFLAGS="$save_CPPFLAGS"
391

392

393
394
AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)

395
396
397
398
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
399
     TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
400
401
402
403
404
405
   fi
else
     TOR_LIBEVENT_LIBS="-levent"
fi
AC_SUBST(TOR_LIBEVENT_LIBS)

406
407
dnl This isn't the best test for Libevent 2.0.3-alpha.  Once it's released,
dnl we can do much better.
408
409
if test "$enable_bufferevents" = "yes" ; then
  if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
410
    AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support.  This won't work.  We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
411
412
413
414
415
416
  else

    CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"

    # Check for the right version.  First see if version detection works.
    AC_MSG_CHECKING([whether we can detect the Libevent version])
417
    AC_COMPILE_IFELSE([AC_LANG_SOURCE([
418
419
420
421
422
423
424
#include <event2/event.h>
#if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
#error
int x = y(zz);
#else
int x = 1;
#endif
425
  ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
426
427
428
429
430
     [event_version_number_works=no;  AC_MSG_RESULT([no])])
    if test "$event_version_number_works" != 'yes'; then
      AC_MSG_WARN([Version detection on Libevent seems broken.  Your Libevent installation is probably screwed up or very old.])
    else
      AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
431
      AC_COMPILE_IFELSE([AC_LANG_SOURCE([
432
#include <event2/event.h>
433
#if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000800
434
435
436
437
438
#error
int x = y(zz);
#else
int x = 1;
#endif
439
   ])], [ AC_MSG_RESULT([yes]) ],
440
      [ AC_MSG_RESULT([no])
441
        AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents.  We require 2.0.8-rc or later]) ] )
442
443
    fi
  fi
444
445
fi

446
447
448
449
LIBS="$save_LIBS"
LDFLAGS="$save_LDFLAGS"
CPPFLAGS="$save_CPPFLAGS"

450
451
452
453
454
AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
if test "$enable_bufferevents" = "yes"; then
   AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
fi

455
dnl ------------------------------------------------------
456
dnl Where do you live, openssl?  And how do we call you?
457

458
459
460
461
462
tor_openssl_pkg_redhat="openssl"
tor_openssl_pkg_debian="libssl"
tor_openssl_devpkg_redhat="openssl-devel"
tor_openssl_devpkg_debian="libssl-dev"

463
464
465
466
467
468
469
470
471
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
  ])

472
TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
473
474
    [#include <openssl/rand.h>],
    [void RAND_add(const void *buf, int num, double entropy);],
475
    [RAND_add((void*)0,0,0); exit(0);], [],
476
    [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
477

478
479
dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()

480
481
482
483
484
echo "tor_cv_library_openssl_dir is $tor_cv_library_openssl_dir"
if test "$enable_static_openssl" = "yes"; then
   if test "$tor_cv_library_openssl_dir" = "(system)"; then
     AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
   else
485
     TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
486
487
   fi
else
488
     TOR_OPENSSL_LIBS="-lssl -lcrypto"
489
490
491
fi
AC_SUBST(TOR_OPENSSL_LIBS)

492
493
494
dnl ------------------------------------------------------
dnl Where do you live, zlib?  And how do we call you?

495
496
497
498
tor_zlib_pkg_redhat="zlib"
tor_zlib_pkg_debian="zlib1g"
tor_zlib_devpkg_redhat="zlib-devel"
tor_zlib_devpkg_debian="zlib1g-dev"
499
500
501
502
503
504
505

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

506
507
508
509
510
511
512
513
514
515
516
517
518
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
519
dnl Make sure to enable support for large off_t if available.
520

521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546

dnl ------------------------------------------------------
dnl Where do you live, libnatpmp?  And how do we call you?
dnl There are no packages for Debian or Redhat as of this patch

if test "$natpmp" = "true"; then
    AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
    TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp],
        [#include <natpmp.h>],
        [#include <natpmp.h>],
        [   int r;
            natpmp_t natpmp;
            natpmpresp_t response;
            r = initnatpmp(&natpmp);],
            [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
            exit(0);],
        [--with-libnatpmp-dir],
        [/usr/lib/])
fi


dnl ------------------------------------------------------
dnl Where do you live, libminiupnpc?  And how do we call you?
dnl There are no packages for Debian or Redhat as of this patch

if test "$upnp" = "true"; then
547
    AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
548
549
550
551
552
553
554
555
556
557
558
    TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc],
        [#include <miniupnpc/miniwget.h>
         #include <miniupnpc/miniupnpc.h>
         #include <miniupnpc/upnpcommands.h>],
        [void upnpDiscover(int delay, const char * multicastif,
         const char * minissdpdsock, int sameport);],
        [upnpDiscover(1, 0, 0, 0); exit(0);],
        [--with-libminiupnpc-dir],
        [/usr/lib/])
fi

559
560
AC_SYS_LARGEFILE

561
562
563
564
565
566
567
568
569
570
571
572
573
AC_CHECK_HEADERS(
        assert.h \
        errno.h \
        fcntl.h \
        signal.h \
        string.h \
        sys/fcntl.h \
        sys/stat.h \
        sys/time.h \
        sys/types.h \
        time.h \
        unistd.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.))
574

575
576
dnl These headers are not essential

577
578
579
580
581
582
583
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
AC_CHECK_HEADERS(
        arpa/inet.h \
        grp.h \
        inttypes.h \
        limits.h \
        linux/types.h \
        machine/limits.h \
        malloc.h \
        malloc/malloc.h \
        malloc_np.h \
        netdb.h \
        netinet/in.h \
        netinet/in6.h \
        pwd.h \
        stdint.h \
        sys/file.h \
        sys/ioctl.h \
        sys/limits.h \
        sys/mman.h \
        sys/param.h \
        sys/prctl.h \
        sys/resource.h \
        sys/socket.h \
        sys/syslimits.h \
        sys/time.h \
        sys/types.h \
        sys/un.h \
        sys/utime.h \
        sys/wait.h \
        syslog.h \
        utime.h
)
609

610
611
612
613
614
615
616
617
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])

618
AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
619
620
621
622
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
623
624
#include <sys/socket.h>
#endif])
625
AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
626
627
628
629
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
630
#include <sys/socket.h>
631
632
633
#endif
#ifdef HAVE_NET_IF_H
#include <net/if.h>
634
#endif])
635
AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
636
        linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
637
638
639
640
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
641
#include <sys/socket.h>
642
#endif
643
644
645
646
647
648
649
650
651
#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
652
653
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
654
#endif])
655
656
657

if test x$transparent = xtrue ; then
   transparent_ok=0
658
   if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
659
660
661
662
663
     transparent_ok=1
   fi
   if test x$linux_netfilter_ipv4 = x1 ; then
     transparent_ok=1
   fi
664
   if test x$transparent_ok = x1 ; then
665
666
667
668
669
670
671
672
673
674
     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

675
676
677
678
679
680
681
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])
682

683
684
685
dnl In case we aren't given a working stdint.h, we'll need to grow our own.
dnl Watch out.

686
687
688
689
690
691
692
693
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)
694
695
AC_CHECK_SIZEOF(intptr_t)
AC_CHECK_SIZEOF(uintptr_t)
696

697
dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
698

699
700
701
702
703
704
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)
705
AC_CHECK_SIZEOF(void *)
706
AC_CHECK_SIZEOF(time_t)
707
AC_CHECK_SIZEOF(size_t)
708

709
AC_CHECK_TYPES([uint, u_char, ssize_t])
710

711
712
dnl used to include sockaddr_storage, but everybody has that.
AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
713
714
715
716
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
717
718
719
720
721
722
723
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
724
725
726
727
728
729
730
731
732
733
734
735
736
#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
])
737
AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
[#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
])
762

763
AC_CHECK_TYPES([rlim_t], , ,
764
765
766
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
767
768
769
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
770
#ifdef HAVE_SYS_RESOURCE_H
771
772
773
774
#include <sys/resource.h>
#endif
])

775
AC_CACHE_CHECK([whether time_t is signed], tor_cv_time_t_signed, [
776
AC_RUN_IFELSE([AC_LANG_SOURCE([
777
778
779
780
781
782
783
784
785
#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
786
787
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)
788
])
789
790

if test "$tor_cv_time_t_signed" = cross; then
791
792
  AC_MSG_NOTICE([Cross compiling: assuming that time_t is signed.])
fi
793

794
if test "$tor_cv_time_t_signed" != no; then
795
796
797
798
  AC_DEFINE([TIME_T_IS_SIGNED], 1,
            [Define to 1 iff time_t is signed])
fi

799
AC_CACHE_CHECK([whether size_t is signed], tor_cv_size_t_signed, [
Sebastian Hahn's avatar
Sebastian Hahn committed
800
AC_RUN_IFELSE([AC_LANG_SOURCE([
801
802
803
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
Sebastian Hahn's avatar
Sebastian Hahn committed
804
int main(int c, char**v) { if (((size_t)-1)<0) return 1; else return 0; }])],
805
806
807
808
809
810
811
812
813
814
815
  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

816
817
818
819
820
AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
])
821

822
823
824
825
# We want to make sure that we _don't_ have a cell_t defined, like IRIX does.

AC_CHECK_SIZEOF(cell_t)

826
827
828
829
# 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>
830
#include <string.h>
831
832
833
834
#include <stdio.h>
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
835
int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
836
return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
837
838
839
840
       [tor_cv_null_is_zero=yes],
       [tor_cv_null_is_zero=no],
       [tor_cv_null_is_zero=cross])])

841
if test "$tor_cv_null_is_zero" = cross ; then
842
843
844
845
  # 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

846
if test "$tor_cv_null_is_zero" != no; then
847
848
849
850
  AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
            [Define to 1 iff memset(0) sets pointers to NULL])
fi

851
852
853
854
855
856
857
858
859
860
861
862
863
864
# 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])])

865
if test "$tor_cv_malloc_zero_works" = cross; then
866
867
868
869
  # 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

870
if test "$tor_cv_malloc_zero_works" = yes; then
871
872
873
874
  AC_DEFINE([MALLOC_ZERO_WORKS], 1,
            [Define to 1 iff malloc(0) returns a pointer])
fi

875
876
877
878
879
880
881
882
883
# 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])])

884
if test "$tor_cv_twos_complement" = cross ; then
885
  # Cross-compiling; let's hope that the target isn't raving mad.
886
  AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
887
888
fi

889
if test "$tor_cv_twos_complement" != no ; then
890
891
892
893
  AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
            [Define to 1 iff we represent negative integers with two's complement])
fi

894
# Whether we should use the dmalloc memory allocation debugging library.
Roger Dingledine's avatar
Roger Dingledine committed
895
AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
896
AC_ARG_WITH(dmalloc,
897
[  --with-dmalloc          Use debug memory allocation library. ],
898
899
900
901
902
903
904
905
906
907
[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
908
  AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
909
  AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
910
911
  AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  AC_DEFINE(DMALLOC_FUNC_CHECK, 1, [Enable dmalloc's malloc function check])
912
  AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
913
914
fi

915
916
917
918
919
920
921
922
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

923
# By default, we're going to assume we don't have mlockall()
Nick Mathewson's avatar
Nick Mathewson committed
924
925
926
# 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.
927
AC_CHECK_FUNCS(mlockall)
Nick Mathewson's avatar
Nick Mathewson committed
928
929
930
931
AC_CHECK_DECLS([mlockall], , , [
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif])
932

933
934
935
936
937
938
939
# 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)

940
941
942
# Check if we have getresuid and getresgid
AC_CHECK_FUNCS(getresuid getresgid)

943
944
945
946
947
948
949
950
951
# 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 $MY_CFLAGS"
952
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
953
#include <netdb.h>
954
  ], [[
955
956
957
958
    char *cp1, *cp2;
    struct hostent *h1, *h2;
    int i1, i2;
    (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
959
  ]])],[
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
    AC_DEFINE(HAVE_GETHOSTBYNAME_R)
    AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
     [Define this if gethostbyname_r takes 6 arguments])
    AC_MSG_RESULT(6)
  ], [
    AC_TRY_COMPILE([
#include <netdb.h>
    ], [
      char *cp1, *cp2;
      struct hostent *h1;
      int i1, i2;
      (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
    ], [
      AC_DEFINE(HAVE_GETHOSTBYNAME_R)
      AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
        [Define this if gethostbyname_r takes 5 arguments])
      AC_MSG_RESULT(5)
   ], [
      AC_TRY_COMPILE([
#include <netdb.h>
     ], [
       char *cp1;
       struct hostent *h1;
       struct hostent_data hd;
       (void) gethostbyname_r(cp1,h1,&hd);
     ], [
       AC_DEFINE(HAVE_GETHOSTBYNAME_R)
       AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
         [Define this if gethostbyname_r takes 3 arguments])
       AC_MSG_RESULT(3)
     ], [
       AC_MSG_RESULT(0)
     ])
  ])
 ])
 CFLAGS=$OLD_CFLAGS
])

998
AC_CACHE_CHECK([whether the C compiler supports __func__],
999
  tor_cv_have_func_macro,
1000
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1001
#include <stdio.h>
1002
int main(int c, char **v) { puts(__func__); }])],
1003
1004
  tor_cv_have_func_macro=yes,
  tor_cv_have_func_macro=no))
1005
1006

AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
1007
  tor_cv_have_FUNC_macro,
1008
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1009
#include <stdio.h>
1010
int main(int c, char **v) { puts(__FUNC__); }])],
1011
1012
  tor_cv_have_FUNC_macro=yes,
  tor_cv_have_FUNC_macro=no))
1013
1014

AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
1015
  tor_cv_have_FUNCTION_macro,
1016
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1017
#include <stdio.h>
1018
int main(int c, char **v) { puts(__FUNCTION__); }])],
1019
1020
  tor_cv_have_FUNCTION_macro=yes,
  tor_cv_have_FUNCTION_macro=no))
1021

1022
if test "$tor_cv_have_func_macro" = 'yes'; then
1023
1024
1025
  AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
fi

1026
if test "$tor_cv_have_FUNC_macro" = 'yes'; then
1027
1028
1029
  AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
fi

1030
if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
1031
1032
1033
1034
  AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
           [Defined if the compiler supports __FUNCTION__])
fi

1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
# $prefix stores the value of the --prefix command line option, or
# NONE if the option wasn't set.  In the case that it wasn't set, make
# it be the default, so that we can use it to expand directories now.
if test "x$prefix" = "xNONE"; then
  prefix=$ac_default_prefix
fi

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

1047
1048
1049
1050
1051
1052
1053
if test "x$BUILDDIR" = "x"; then
  BUILDDIR=`pwd`
fi
AC_SUBST(BUILDDIR)
AH_TEMPLATE([BUILDDIR],[tor's build directory])
AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")

1054
1055
1056
if test "x$CONFDIR" = "x"; then
  CONFDIR=`eval echo $sysconfdir/tor`
fi
1057
AC_SUBST(CONFDIR)
1058
AH_TEMPLATE([CONFDIR],[tor's configuration directory])
1059
1060
AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")

1061
1062
1063
1064
1065
BINDIR=`eval echo $bindir`
AC_SUBST(BINDIR)
LOCALSTATEDIR=`eval echo $localstatedir`
AC_SUBST(LOCALSTATEDIR)

1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
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

1080
1081
# Set CFLAGS _after_ all the above checks, since our warnings are stricter
# than autoconf's macros like.
1082
1083
1084
if test "$GCC" = yes; then
  # Disable GCC's strict aliasing checks.  They are an hours-to-debug
  # accident waiting to happen.
1085
  CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
1086
else
1087
1088
1089
  # Autoconf sets -g -O2 by default. Override optimization level
  # for non-gcc compilers
  CFLAGS="$CFLAGS -O"
1090
  enable_gcc_warnings=no
1091
  enable_gcc_warnings_advisory=no
1092
fi
1093

1094
# Add some more warnings which we use in development but not in the
1095
# released versions.  (Some relevant gcc versions can't handle these.)
1096
if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
1097

1098
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1099
1100
#if !defined(__GNUC__) || (__GNUC__ < 4)
#error
1101
#endif])], have_gcc4=yes, have_gcc4=no)
1102

1103
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1104
#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
1105
#error
1106
#endif])], have_gcc42=yes, have_gcc42=no)
1107

1108
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1109
1110
#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
#error
1111
#endif])], have_gcc43=yes, have_gcc43=no)
1112

1113
1114
1115
1116
1117
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
#if !defined(__clang__) || (__clang_major__ > 2) || (__clang_major__ == 2 && __clang_minor__ > 9)
#error
#endif])], have_clang29orlower=yes, have_clang29orlower=no)

1118
1119
  save_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS -Wshorten-64-to-32"
1120
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
1121
1122
1123
                    have_shorten64_flag=no)
  CFLAGS="$save_CFLAGS"

1124
1125
1126
1127
1128
1129
1130
1131
1132
  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

1133
1134
1135
1136
1137
1138
  CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
  CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"

1139
1140
1141
  if test x$enable_gcc_warnings = xyes; then
    CFLAGS="$CFLAGS -Werror"
  fi
1142

1143
  # Disabled, so we can use mallinfo(): -Waggregate-return
1144

1145
  if test x$have_gcc4 = xyes ; then
1146
1147
1148
    # These warnings break gcc 3.3.5 and work on gcc 4.0.2
    CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement -Wold-style-definition"
  fi
1149

1150
  if test x$have_gcc42 = xyes ; then
1151
1152
    # These warnings break gcc 4.0.2 and work on gcc 4.2
    # XXXX020 See if any of these work with earlier versions.
1153
1154
    CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"

1155
1156
1157
    # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
  fi

1158
1159
1160
1161
1162
1163
1164
  if test x$have_gcc42 = xyes && test x$have_clang29orlower = xno; then
    # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
    # We only disable these for clang 2.9 and lower, in case they are
    # supported in later versions.
    CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
  fi

1165
  if test x$have_gcc43 = xyes ; then
1166
1167
1168
    # These warnings break gcc 4.2 and work on gcc 4.3
    # XXXX020 See if any of these work with earlier versions.
    CFLAGS="$CFLAGS -Wextra -Warray-bounds"
1169
1170
  fi

1171
1172
1173
1174
  if test x$have_shorten64_flag = xyes ; then
    CFLAGS="$CFLAGS -Wshorten-64-to-32"
  fi

1175
1176
##This will break the world on some 64-bit architectures
# CFLAGS="$CFLAGS -Winline"
1177
fi
1178

1179
1180


1181
1182
CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"

1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
AC_CONFIG_FILES([
        Doxyfile
        Makefile
        contrib/Makefile
        contrib/suse/Makefile
        contrib/suse/tor.sh
        contrib/tor.logrotate
        contrib/tor.sh
        contrib/torctl
        contrib/torify
        doc/Makefile
        src/Makefile
        src/common/Makefile
        src/config/Makefile
        src/config/torrc.sample
        src/or/Makefile
        src/test/Makefile
        src/tools/Makefile
        src/tools/tor-fw-helper/Makefile
        src/win32/Makefile
        tor.spec
])
1205

1206
AC_OUTPUT
1207
1208
1209
1210
1211

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