configure.ac 46.1 KB
Newer Older
Roger Dingledine's avatar
Roger Dingledine committed
1
dnl Copyright (c) 2001-2004, Roger Dingledine
2
dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
3
dnl Copyright (c) 2007-2013, The Tor Project, Inc.
Nick Mathewson's avatar
Nick Mathewson committed
4
dnl See LICENSE for licensing information
5

Nick Mathewson's avatar
Nick Mathewson committed
6
AC_INIT([tor],[0.2.5.0-alpha-dev])
Stewart Smith's avatar
Stewart Smith committed
7
AC_CONFIG_SRCDIR([src/or/main.c])
8
AC_CONFIG_MACRO_DIR([m4])
Stewart Smith's avatar
Stewart Smith committed
9
AM_INIT_AUTOMAKE
10
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
11
AC_CONFIG_HEADERS([orconfig.h])
12

13
14
AC_CANONICAL_HOST

15
if test -f /etc/redhat-release ; then
16
  if test -f /usr/kerberos/include ; then
17
    CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
18
  fi
19
fi
20

21
22
# 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
23
CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
24

25
26
27
#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))
28
29
AC_ARG_ENABLE(openbsd-malloc,
   AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd.  Linux only))
30
31
AC_ARG_ENABLE(instrument-downloads,
   AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
32
33
34
35
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))
36
37
AC_ARG_ENABLE(static-zlib,
   AS_HELP_STRING(--enable-static-zlib, Link against a static zlib library. Requires --with-zlib-dir))
38
AC_ARG_ENABLE(static-tor,
39
   AS_HELP_STRING(--enable-static-tor, Create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir))
40
41
AC_ARG_ENABLE(curve25519,
   AS_HELP_STRING(--disable-curve25519, Build Tor with no curve25519 elliptic-curve crypto support))
42
43
44
45
46
47
48

if test "$enable_static_tor" = "yes"; then
  enable_static_libevent="yes";
  enable_static_openssl="yes";
  enable_static_zlib="yes";
  CFLAGS="$CFLAGS -static"
fi
49

50
51
52
53
if test x$enable_buf_freelists != xno; then
  AC_DEFINE(ENABLE_BUF_FREELISTS, 1,
            [Defined if we try to use freelists for buffer RAM chunks])
fi
54
AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
55
if test x$enable_instrument_downloads = xyes; then
56
57
58
  AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
            [Defined if we want to keep track of how much of each kind of resource we download.])
fi
59

60
AC_ARG_ENABLE(transparent,
61
     AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
62
63
64
65
66
67
     [case "${enableval}" in
        yes) transparent=true ;;
        no)  transparent=false ;;
        *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
      esac], [transparent=true])

68
69
70
71
72
73
74
75
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])

76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
# 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])

94

Nick Mathewson's avatar
Nick Mathewson committed
95
AC_ARG_ENABLE(threads,
96
     AS_HELP_STRING(--disable-threads, disable multi-threading support))
Nick Mathewson's avatar
Nick Mathewson committed
97
98

if test x$enable_threads = x; then
99
   case $host in
100
101
102
103
104
    *-*-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
105
106
107
108
109
    *)
     enable_threads="yes";;
   esac
fi

110
if test "$enable_threads" = "yes"; then
Nick Mathewson's avatar
Nick Mathewson committed
111
112
113
  AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
fi

114
115
116
117
118
119
case $host in
   *-*-solaris* )
     AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
     ;;
esac

120
AC_ARG_ENABLE(gcc-warnings,
121
     AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
122
123
AC_ARG_ENABLE(gcc-warnings-advisory,
     AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
124

125
126
127
128
129
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,
130
    AS_HELP_STRING(--disable-gcc-hardening, disable compiler security checks))
131
132
133
134

dnl Linker hardening options
dnl Currently these options are ELF specific - you can't use this with MacOSX
AC_ARG_ENABLE(linker-hardening,
135
    AS_HELP_STRING(--disable-linker-hardening, disable linker security fixups))
136

137
138
139
140
141
142
143
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

144
145
146
147
148
149
150
# Tor2web mode flag
AC_ARG_ENABLE(tor2web-mode,
     AS_HELP_STRING(--enable-tor2web-mode, support tor2web non-anonymous mode),
[if test x$enableval = xyes; then
    CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
fi])

151
152
153
AC_ARG_ENABLE(bufferevents,
     AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))

154
155
156
157
158
159
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

160
AC_PROG_CC
161
AC_PROG_CPP
162
163
AC_PROG_MAKE_SET
AC_PROG_RANLIB
164
165
166

dnl autoconf 2.59 appears not to support AC_PROG_SED
AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
167

168
169
170
dnl check for asciidoc and a2x
AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
AC_PATH_PROG([A2X], [a2x], none)
171
172

AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
173

174
175
176
177
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
178

179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
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
195
   AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
196
 else
197
   AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
198
199
200
 fi
])

201
202
AC_PATH_PROG([SHA1SUM], [sha1sum], none)
AC_PATH_PROG([OPENSSL], [openssl], none)
203

204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
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)

222

223
dnl If _WIN32 is defined and non-zero, we are building for win32
224
AC_MSG_CHECKING([for win32])
225
AC_RUN_IFELSE([AC_LANG_SOURCE([
226
int main(int c, char **v) {
227
228
#ifdef _WIN32
#if _WIN32
229
230
231
232
233
234
235
  return 0;
#else
  return 1;
#endif
#else
  return 2;
#endif
236
}])],
237
bwin32=true; AC_MSG_RESULT([yes]),
238
239
bwin32=false; AC_MSG_RESULT([no]),
bwin32=cross; AC_MSG_RESULT([cross])
240
241
)

242
if test "$bwin32" = cross; then
243
AC_MSG_CHECKING([for win32 (cross)])
244
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
245
#ifdef _WIN32
246
247
248
249
250
int main(int c, char **v) {return 0;}
#else
#error
int main(int c, char **v) {return x(y);}
#endif
251
])],
252
253
254
255
bwin32=true; AC_MSG_RESULT([yes]),
bwin32=false; AC_MSG_RESULT([no]))
fi

256
AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
257

258
259
dnl Enable C99 when compiling with MIPSpro
AC_MSG_CHECKING([for MIPSpro compiler])
260
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
261
262
263
264
#if (defined(__sgi) && defined(_COMPILER_VERSION))
#error
  return x(y);
#endif
265
])],
266
bmipspro=false; AC_MSG_RESULT(no),
267
bmipspro=true; AC_MSG_RESULT(yes))
268

269
if test "$bmipspro" = true; then
270
271
272
  CFLAGS="$CFLAGS -c99"
fi

273
274
AC_C_BIGENDIAN

275
AC_SEARCH_LIBS(socket, [socket network])
276
AC_SEARCH_LIBS(gethostbyname, [nsl])
277
AC_SEARCH_LIBS(dlopen, [dl])
278
AC_SEARCH_LIBS(inet_aton, [resolv])
279
280
281
282
283
284
saved_LIBS="$LIBS"
AC_SEARCH_LIBS([clock_gettime], [rt])
if test "$LIBS" != "$saved_LIBS"; then
   # Looks like we need -lrt for clock_gettime().
   have_rt=yes
fi
285

286
if test "$enable_threads" = "yes"; then
287
288
289
  AC_SEARCH_LIBS(pthread_create, [pthread])
  AC_SEARCH_LIBS(pthread_detach, [pthread])
fi
290

291
292
293
294
dnl -------------------------------------------------------------------
dnl Check for functions before libevent, since libevent-1.2 apparently
dnl exports strlcpy without defining it in a header.

295
AC_CHECK_FUNCS(
296
        _NSGetEnviron \
Sebastian Hahn's avatar
Sebastian Hahn committed
297
298
        accept4 \
        clock_gettime \
299
300
301
        flock \
        ftime \
        getaddrinfo \
Sebastian Hahn's avatar
Sebastian Hahn committed
302
        getifaddrs \
303
304
305
306
        getrlimit \
        gettimeofday \
        gmtime_r \
        inet_aton \
Sebastian Hahn's avatar
Sebastian Hahn committed
307
        ioctl \
308
        issetugid \
309
        llround \
310
        localtime_r \
Sebastian Hahn's avatar
Sebastian Hahn committed
311
        lround \
312
313
        memmem \
        prctl \
Sebastian Hahn's avatar
Sebastian Hahn committed
314
        rint \
315
316
317
318
319
320
321
322
323
        socketpair \
        strlcat \
        strlcpy \
        strptime \
        strtok_r \
        strtoull \
        sysconf \
        uname \
        vasprintf \
324
	_vscprintf
325
)
326

327
if test "$enable_threads" = "yes"; then
328
329
330
331
  AC_CHECK_HEADERS(pthread.h)
  AC_CHECK_FUNCS(pthread_create)
fi

332
dnl ------------------------------------------------------
333
dnl Where do you live, libevent?  And how do we call you?
334

335
if test "$bwin32" = true; then
336
  TOR_LIB_WS32=-lws2_32
337
  TOR_LIB_IPHLPAPI=-liphlpapi
338
339
  # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  # think it's actually necessary.
340
  TOR_LIB_GDI=-lgdi32
Nick Mathewson's avatar
   
Nick Mathewson committed
341
else
342
343
  TOR_LIB_WS32=
  TOR_LIB_GDI=
Nick Mathewson's avatar
   
Nick Mathewson committed
344
fi
345
346
AC_SUBST(TOR_LIB_WS32)
AC_SUBST(TOR_LIB_GDI)
347
AC_SUBST(TOR_LIB_IPHLPAPI)
Nick Mathewson's avatar
   
Nick Mathewson committed
348

349
350
351
352
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.
353
354
355
356
357
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)

358
tor_libevent_pkg_redhat="libevent"
359
tor_libevent_pkg_debian="libevent-dev"
360
361
362
tor_libevent_devpkg_redhat="libevent-devel"
tor_libevent_devpkg_debian="libevent-dev"

363
364
365
366
367
368
369
370
371
372
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 "$enable_static_libevent" = "yes"; then
    if test "$have_rt" = yes; then
      STATIC_LIBEVENT_FLAGS=" -lrt "
    fi
fi

TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
373
#ifdef _WIN32
374
375
#include <winsock2.h>
#endif
376
#include <stdlib.h>
377
#include <sys/time.h>
Roger Dingledine's avatar
Roger Dingledine committed
378
#include <sys/types.h>
379
#include <event.h>], [
380
#ifdef _WIN32
381
382
383
#include <winsock2.h>
#endif
void exit(int); void *event_init(void);],
384
    [
385
#ifdef _WIN32
386
{WSADATA d; WSAStartup(0x101,&d); }
387
388
389
#endif
event_init(); exit(0);
], [--with-libevent-dir], [/opt/libevent])
390

391
dnl Now check for particular libevent functions.
392
393
save_LIBS="$LIBS"
save_LDFLAGS="$LDFLAGS"
394
save_CPPFLAGS="$CPPFLAGS"
395
LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
396
LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
397
CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
398
399
400
401
402
403
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])
404
405
406
407
AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
[#include <event.h>
])

408
AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
409

410
411
LIBS="$save_LIBS"
LDFLAGS="$save_LDFLAGS"
412
CPPFLAGS="$save_CPPFLAGS"
413

414

415
416
AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)

417
418
419
420
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
421
     TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
422
423
424
425
426
   fi
else
     TOR_LIBEVENT_LIBS="-levent"
fi

427
428
dnl This isn't the best test for Libevent 2.0.3-alpha.  Once it's released,
dnl we can do much better.
429
430
if test "$enable_bufferevents" = "yes" ; then
  if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
431
    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.])
432
433
434
435
436
437
  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])
438
    AC_COMPILE_IFELSE([AC_LANG_SOURCE([
439
440
441
442
443
444
445
#include <event2/event.h>
#if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
#error
int x = y(zz);
#else
int x = 1;
#endif
446
  ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
447
448
449
450
451
     [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])
452
      AC_COMPILE_IFELSE([AC_LANG_SOURCE([
453
#include <event2/event.h>
454
#if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
455
456
457
458
459
#error
int x = y(zz);
#else
int x = 1;
#endif
460
   ])], [ AC_MSG_RESULT([yes]) ],
461
      [ AC_MSG_RESULT([no])
462
        AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents.  We require 2.0.13-stable or later]) ] )
463
464
    fi
  fi
465
466
fi

467
468
469
470
LIBS="$save_LIBS"
LDFLAGS="$save_LDFLAGS"
CPPFLAGS="$save_CPPFLAGS"

471
472
AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
if test "$enable_bufferevents" = "yes"; then
473
474
475
476
477
478
  AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
  if test "$enable_static_libevent" = "yes"; then
    TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
  else
    TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
  fi
479
fi
480
AC_SUBST(TOR_LIBEVENT_LIBS)
481

482
483
484
485
486
487
488
dnl ------------------------------------------------------
dnl Where do you live, libm?

dnl On some platforms (Haiku/BeOS) the math library is
dnl part of libroot. In which case don't link against lm
TOR_LIB_MATH=""
save_LIBS="$LIBS"
489
490
491
AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
if test "$ac_cv_search_pow" != "none required"; then
    TOR_LIB_MATH="$ac_cv_search_pow"
492
493
494
495
fi
LIBS="$save_LIBS"
AC_SUBST(TOR_LIB_MATH)

496
dnl ------------------------------------------------------
497
dnl Where do you live, openssl?  And how do we call you?
498

499
500
501
502
503
tor_openssl_pkg_redhat="openssl"
tor_openssl_pkg_debian="libssl"
tor_openssl_devpkg_redhat="openssl-devel"
tor_openssl_devpkg_debian="libssl-dev"

504
505
506
507
508
509
510
511
512
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
  ])

513
TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
514
515
    [#include <openssl/rand.h>],
    [void RAND_add(const void *buf, int num, double entropy);],
516
    [RAND_add((void*)0,0,0); exit(0);], [],
517
    [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
518

519
520
dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()

521
522
523
524
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
525
     TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
526
527
   fi
else
528
     TOR_OPENSSL_LIBS="-lssl -lcrypto"
529
530
531
fi
AC_SUBST(TOR_OPENSSL_LIBS)

532
533
534
dnl ------------------------------------------------------
dnl Where do you live, zlib?  And how do we call you?

535
536
537
538
tor_zlib_pkg_redhat="zlib"
tor_zlib_pkg_debian="zlib1g"
tor_zlib_devpkg_redhat="zlib-devel"
tor_zlib_devpkg_debian="zlib1g-dev"
539
540
541
542
543
544
545

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

546
547
548
549
550
551
552
553
554
555
556
557
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"
   fi
else
     TOR_ZLIB_LIBS="-lz"
fi
AC_SUBST(TOR_ZLIB_LIBS)

558
559
560
561
562
dnl ---------------------------------------------------------------------
dnl Now that we know about our major libraries, we can check for compiler
dnl and linker hardening options.  We need to do this with the libraries known,
dnl since sometimes the linker will like an option but not be willing to
dnl use it with a build of a library.
563

564
565
566
all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"

567
568
569
570
571
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
#if !defined(__clang__)
#error
#endif])], have_clang=yes, have_clang=no)

572
573
if test x$enable_gcc_hardening != xno; then
    CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
574
575
576
    if test x$have_clang = xyes; then
        TOR_CHECK_CFLAGS(-Qunused-arguments)
    fi
577
578
579
580
    TOR_CHECK_CFLAGS(-fstack-protector-all)
    TOR_CHECK_CFLAGS(-Wstack-protector)
    TOR_CHECK_CFLAGS(-fwrapv)
    TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
581
582
583
584
    if test "$bwin32" = "false"; then
       TOR_CHECK_CFLAGS(-fPIE)
       TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
    fi
585
fi
586

587
588
589
if test x$enable_linker_hardening != xno; then
    TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
fi
590
591

dnl ------------------------------------------------------
592
593
594
595
596
597
598
599
600
601
602
603
dnl Now see if we have a -fomit-frame-pointer compiler option.

saved_CFLAGS="$CFLAGS"
TOR_CHECK_CFLAGS(-fomit-frame-pointer)
if test "$saved_CFLAGS" != "$CFLAGS"; then
  F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
else
  F_OMIT_FRAME_POINTER=''
fi
CFLAGS="$saved_CFLAGS"
AC_SUBST(F_OMIT_FRAME_POINTER)

604
605
606
607
608
609
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.])
Steven Murdoch's avatar
Steven Murdoch committed
610
    TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
611
        [#include <natpmp.h>],
612
        [#ifdef _WIN32
Steven Murdoch's avatar
Steven Murdoch committed
613
614
615
         #define STATICLIB
         #endif
         #include <natpmp.h>],
616
617
618
        [   int r;
            natpmp_t natpmp;
            natpmpresp_t response;
619
            r = initnatpmp(&natpmp, 0, 0);],
620
621
622
623
624
625
626
627
628
629
630
631
            [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
632
    AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660

    dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
    dnl to see if we have miniupnpc-1.5 or -1.6
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
        [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])

    if test "$miniupnpc15" = "true" ; then
        AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
        TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
            [#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/])
    else
        TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
            [#include <miniupnpc/miniwget.h>
             #include <miniupnpc/miniupnpc.h>
             #include <miniupnpc/upnpcommands.h>],
            [void upnpDiscover(int delay, const char * multicastif,
             const char * minissdpdsock, int sameport, int ipv6, int * error);],
            [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
            [--with-libminiupnpc-dir],
            [/usr/lib/])
    fi
661
662
fi

663
664
665
666
667
668
dnl ============================================================
dnl Check for libseccomp

AC_CHECK_HEADERS([seccomp.h])
AC_SEARCH_LIBS(seccomp_init, [seccomp])

669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
dnl ============================================================
dnl We need an implementation of curve25519.

dnl set these defaults.
have_a_curve25519=no
build_curve25519_donna=no
build_curve25519_donna_c64=no
use_curve25519_donna=no
use_curve25519_nacl=no
CURVE25519_LIBS=

if test x$enable_curve25519 != xno; then

  dnl The best choice is using curve25519-donna-c64, but that requires
  dnl that we
  AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
    tor_cv_can_use_curve25519_donna_c64,
    [AC_RUN_IFELSE(
      [AC_LANG_PROGRAM([dnl
        #include <stdint.h>
        typedef unsigned uint128_t __attribute__((mode(TI)));
690
691
692
	int func(uint64_t a, uint64_t b) {
  	     uint128_t c = ((uint128_t)a) * b;
             int ok = ((uint64_t)(c>>96)) == 522859 &&
693
694
695
	           (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
                   (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
                   (((uint64_t)(c))&0xffffffffL) == 0;
696
697
             return ok;
        }
698
	], [dnl
699
700
	  int ok = func( ((uint64_t)2000000000) * 1000000000,
	  	         ((uint64_t)1234567890) << 24);
701
          return !ok;
702
703
704
705
706
        ])],
	[tor_cv_can_use_curve25519_donna_c64=yes],
        [tor_cv_can_use_curve25519_donna_c64=no],
	[AC_COMPILE_IFELSE(
          [AC_LANG_PROGRAM([dnl
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
        #include <stdint.h>
        typedef unsigned uint128_t __attribute__((mode(TI)));
	int func(uint64_t a, uint64_t b) {
  	     uint128_t c = ((uint128_t)a) * b;
             int ok = ((uint64_t)(c>>96)) == 522859 &&
	           (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
                   (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
                   (((uint64_t)(c))&0xffffffffL) == 0;
             return ok;
        }
	], [dnl
	  int ok = func( ((uint64_t)2000000000) * 1000000000,
	  	         ((uint64_t)1234567890) << 24);
          return !ok;
        ])],
722
723
724
            [tor_cv_can_use_curve25519_donna_c64=cross],
	    [tor_cv_can_use_curve25519_donna_c64=no])])])

725
726
727
  AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
                    nacl/crypto_scalarmult_curve25519.h])

728
  AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
729
730
731
732
733
    tor_cv_can_use_curve25519_nacl,
    [tor_saved_LIBS="$LIBS"
     LIBS="$LIBS -lnacl"
     AC_LINK_IFELSE(
       [AC_LANG_PROGRAM([dnl
734
         #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
735
         #include <crypto_scalarmult_curve25519.h>
736
737
738
	 #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
	 #include <nacl/crypto_scalarmult_curve25519.h>
	 #endif
739
         #ifdef crypto_scalarmult_curve25519_ref_BYTES
740
	 #error Hey, this is the reference implementation! That's not fast.
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
	 #endif
       ], [
	 unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
       ])], [tor_cv_can_use_curve25519_nacl=yes],
       [tor_cv_can_use_curve25519_nacl=no])
     LIBS="$tor_saved_LIBS" ])

   dnl Okay, now we need to figure out which one to actually use. Fall back
   dnl to curve25519-donna.c

   if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
     build_curve25519_donna_c64=yes
     use_curve25519_donna=yes
   elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
     use_curve25519_nacl=yes
     CURVE25519_LIBS=-lnacl
   else
     build_curve25519_donna=yes
     use_curve25519_donna=yes
   fi
   have_a_curve25519=yes
fi

if test x$have_a_curve25519 = xyes; then
  AC_DEFINE(CURVE25519_ENABLED, 1,
            [Defined if we have a curve25519 implementation])
fi
if test x$use_curve25519_donna = xyes; then
  AC_DEFINE(USE_CURVE25519_DONNA, 1,
            [Defined if we should use an internal curve25519_donna{,_c64} implementation])
fi
if test x$use_curve25519_nacl = xyes; then
  AC_DEFINE(USE_CURVE25519_NACL, 1,
            [Defined if we should use a curve25519 from nacl])
fi
AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
AM_CONDITIONAL(CURVE25519_ENABLED, test x$have_a_curve25519 = xyes)
AC_SUBST(CURVE25519_LIBS)

781
dnl Make sure to enable support for large off_t if available.
782
783
AC_SYS_LARGEFILE

784
785
786
787
788
789
790
791
792
793
794
795
796
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.))
797

798
799
dnl These headers are not essential

800
801
AC_CHECK_HEADERS(
        arpa/inet.h \
802
        crt_externs.h \
803
        grp.h \
Sebastian Hahn's avatar
Sebastian Hahn committed
804
        ifaddrs.h \
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
        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
)
834

835
836
AC_CHECK_HEADERS(sys/param.h)

837
AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
838
839
840
841
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
842
843
#include <sys/socket.h>
#endif])
844
AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
845
846
847
848
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
849
#include <sys/socket.h>
850
851
852
#endif
#ifdef HAVE_NET_IF_H
#include <net/if.h>
853
#endif])
854
AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
855
        linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
856
857
858
859
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
860
#include <sys/socket.h>
861
#endif
862
863
864
865
866
867
868
869
870
#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
871
872
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
873
#endif])
874
875
876

if test x$transparent = xtrue ; then
   transparent_ok=0
877
   if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
878
879
880
881
882
     transparent_ok=1
   fi
   if test x$linux_netfilter_ipv4 = x1 ; then
     transparent_ok=1
   fi
883
   if test x$transparent_ok = x1 ; then
884
885
     AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
     case $host in
886
       *-*-openbsd* | *-*-bitrig*)
887
888
889
890
891
892
893
         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

894
895
896
897
898
899
900
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])
901

902
903
904
dnl In case we aren't given a working stdint.h, we'll need to grow our own.
dnl Watch out.

905
906
907
908
909
910
911
912
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)
913
914
AC_CHECK_SIZEOF(intptr_t)
AC_CHECK_SIZEOF(uintptr_t)
915

916
dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
917

918
919
920
921
922
923
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)
924
AC_CHECK_SIZEOF(void *)
925
AC_CHECK_SIZEOF(time_t)
926
AC_CHECK_SIZEOF(size_t)
927
AC_CHECK_SIZEOF(pid_t)
928

929
AC_CHECK_TYPES([uint, u_char, ssize_t])
930

931
932
dnl used to include sockaddr_storage, but everybody has that.
AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
933
934
935
936
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
937
938
939
940
941
942
943
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
944
#endif
945
#ifdef _WIN32
946
#define _WIN32_WINNT 0x0501
947
948
949
950
951
952
953
954
955
#define WIN32_LEAN_AND_MEAN
#if defined(_MSC_VER) && (_MSC_VER < 1300)
#include <winsock.h>
#else
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#endif
])
956
AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
957
958
959
960
961
962
963
964
965
966
967
968
[#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
969
#ifdef _WIN32
970
#define _WIN32_WINNT 0x0501
971
972
973
974
975
976
977
978
979
#define WIN32_LEAN_AND_MEAN
#if defined(_MSC_VER) && (_MSC_VER < 1300)
#include <winsock.h>
#else
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#endif
])
980

981
AC_CHECK_TYPES([rlim_t], , ,
982
983
984
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
985
986
987
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
988
#ifdef HAVE_SYS_RESOURCE_H
989
990
991
992
#include <sys/resource.h>
#endif
])

993
994
995
AX_CHECK_SIGN([time_t],
       [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
       [ : ], [
996
997
998
999
1000
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>