configure.ac 61.5 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) 2007-2015, The Tor Project, Inc.
Nick Mathewson's avatar
Nick Mathewson committed
4
dnl See LICENSE for licensing information
5

6
AC_PREREQ([2.63])
Nick Mathewson's avatar
Nick Mathewson committed
7
AC_INIT([tor],[0.3.0.3-alpha-dev])
Stewart Smith's avatar
Stewart Smith committed
8
AC_CONFIG_SRCDIR([src/or/main.c])
9
AC_CONFIG_MACRO_DIR([m4])
10
11
12
13

# "foreign" means we don't follow GNU package layout standards
# "1.11" means we require automake version 1.11 or newer
# "subdir-objects" means put .o files in the same directory as the .c files
14
AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects -Wall -Werror])
15

16
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
17
AC_CONFIG_HEADERS([orconfig.h])
18

19
AC_USE_SYSTEM_EXTENSIONS
20
21
AC_CANONICAL_HOST

22
23
PKG_PROG_PKG_CONFIG

24
25
if test -f "/etc/redhat-release"; then
  if test -f "/usr/kerberos/include"; then
26
    CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
27
  fi
28
fi
29

30
31
# 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
32
CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
33

34
AC_ARG_ENABLE(openbsd-malloc,
35
   AS_HELP_STRING(--enable-openbsd-malloc, [use malloc code from OpenBSD.  Linux only]))
36
AC_ARG_ENABLE(static-openssl,
37
   AS_HELP_STRING(--enable-static-openssl, [link against a static openssl library. Requires --with-openssl-dir]))
38
AC_ARG_ENABLE(static-libevent,
39
   AS_HELP_STRING(--enable-static-libevent, [link against a static libevent library. Requires --with-libevent-dir]))
40
AC_ARG_ENABLE(static-zlib,
41
   AS_HELP_STRING(--enable-static-zlib, [link against a static zlib library. Requires --with-zlib-dir]))
42
AC_ARG_ENABLE(static-tor,
43
   AS_HELP_STRING(--enable-static-tor, [create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir]))
44
AC_ARG_ENABLE(unittests,
45
   AS_HELP_STRING(--disable-unittests, [don't build unit tests for Tor. Risky!]))
46
AC_ARG_ENABLE(coverage,
47
   AS_HELP_STRING(--enable-coverage, [enable coverage support in the unit-test build]))
48
49
AC_ARG_ENABLE(asserts-in-tests,
   AS_HELP_STRING(--disable-asserts-in-tests, [disable tor_assert() calls in the unit tests, for branch coverage]))
50
AC_ARG_ENABLE(system-torrc,
51
   AS_HELP_STRING(--disable-system-torrc, [don't look for a system-wide torrc file]))
Nick Mathewson's avatar
Nick Mathewson committed
52
AC_ARG_ENABLE(libfuzzer,
53
54
55
   AS_HELP_STRING(--enable-libfuzzer, [build extra fuzzers based on 'libfuzzer']))
AC_ARG_ENABLE(oss-fuzz,
   AS_HELP_STRING(--enable-oss-fuzz, [build extra fuzzers based on 'oss-fuzz' environment]))
56

57
if test "x$enable_coverage" != "xyes" -a "x$enable_asserts_in_tests" = "xno" ; then
58
59
60
    AC_MSG_ERROR([Can't disable assertions outside of coverage build])
fi

61
62
63
AM_CONDITIONAL(UNITTESTS_ENABLED, test "x$enable_unittests" != "xno")
AM_CONDITIONAL(COVERAGE_ENABLED, test "x$enable_coverage" = "xyes")
AM_CONDITIONAL(DISABLE_ASSERTS_IN_UNIT_TESTS, test "x$enable_asserts_in_tests" = "xno")
Nick Mathewson's avatar
Nick Mathewson committed
64
AM_CONDITIONAL(LIBFUZZER_ENABLED, test "x$enable_libfuzzer" = "xyes")
65
AM_CONDITIONAL(OSS_FUZZ_ENABLED, test "x$enable_oss_fuzz" = "xyes")
66

67
68
69
70
71
72
if test "$enable_static_tor" = "yes"; then
  enable_static_libevent="yes";
  enable_static_openssl="yes";
  enable_static_zlib="yes";
  CFLAGS="$CFLAGS -static"
fi
73

74
75
76
77
78
if test "$enable_system_torrc" = "no"; then
  AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
            [Defined if we're not going to look for a torrc in SYSCONF])
fi

79
AM_CONDITIONAL(USE_OPENBSD_MALLOC, test "x$enable_openbsd_malloc" = "xyes")
80

81
AC_ARG_ENABLE(asciidoc,
82
     AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
83
     [case "${enableval}" in
84
85
        "yes") asciidoc=true ;;
        "no")  asciidoc=false ;;
86
87
88
        *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
      esac], [asciidoc=true])

89
90
# systemd notify support
AC_ARG_ENABLE(systemd,
91
      AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
92
      [case "${enableval}" in
93
94
        "yes") systemd=true ;;
        "no")  systemd=false ;;
95
96
97
98
99
100
        * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
      esac], [systemd=auto])



# systemd support
101
if test "x$enable_systemd" = "xno"; then
102
103
104
105
106
107
    have_systemd=no;
else
    PKG_CHECK_MODULES(SYSTEMD,
        [libsystemd-daemon],
        have_systemd=yes,
        have_systemd=no)
108
    if test "x$have_systemd" = "xno"; then
109
110
111
112
113
114
        AC_MSG_NOTICE([Okay, checking for systemd a different way...])
        PKG_CHECK_MODULES(SYSTEMD,
            [libsystemd],
            have_systemd=yes,
            have_systemd=no)
    fi
115
116
fi

117
if test "x$have_systemd" = "xyes"; then
118
    AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
119
    TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
120
    TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
121
    PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
122
         [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
123
fi
124
AC_SUBST(TOR_SYSTEMD_CFLAGS)
125
126
AC_SUBST(TOR_SYSTEMD_LIBS)

127
if test "x$enable_systemd" = "xyes" -a "x$have_systemd" != "xyes" ; then
128
129
130
    AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
fi

131
case "$host" in
132
133
134
135
136
   *-*-solaris* )
     AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
     ;;
esac

137
AC_ARG_ENABLE(gcc-warnings,
138
139
140
     AS_HELP_STRING(--enable-gcc-warnings, [deprecated alias for enable-fatal-warnings]))
AC_ARG_ENABLE(fatal-warnings,
     AS_HELP_STRING(--enable-fatal-warnings, [tell the compiler to treat all warnings as errors.]))
141
AC_ARG_ENABLE(gcc-warnings-advisory,
142
     AS_HELP_STRING(--disable-gcc-warnings-advisory, [disable the regular verbose warnings]))
143

144
145
dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
AC_ARG_ENABLE(gcc-hardening,
146
    AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
147

148
dnl Deprecated --enable-expensive-hardening but keep it for now for backward compat.
149
AC_ARG_ENABLE(expensive-hardening,
150
151
152
153
154
155
    AS_HELP_STRING(--enable-expensive-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
AC_ARG_ENABLE(fragile-hardening,
    AS_HELP_STRING(--enable-fragile-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
if test "x$enable_expensive_hardening" = "xyes" || test "x$enable_fragile_hardening" = "xyes"; then
  fragile_hardening="yes"
fi
156

157
158
159
dnl Linker hardening options
dnl Currently these options are ELF specific - you can't use this with MacOSX
AC_ARG_ENABLE(linker-hardening,
160
    AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
161

162
AC_ARG_ENABLE(local-appdata,
163
   AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
164
165
166
167
168
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

169
170
# Tor2web mode flag
AC_ARG_ENABLE(tor2web-mode,
171
     AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
172
[if test "x$enableval" = "xyes"; then
173
174
175
    CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
fi])

176
AC_ARG_ENABLE(tool-name-check,
177
     AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
178

179
AC_ARG_ENABLE(seccomp,
180
     AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
181

182
AC_ARG_ENABLE(libscrypt,
183
     AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
184

185
186
187
188
189
190
191
192
193
dnl check for the correct "ar" when cross-compiling.
dnl   (AM_PROG_AR was new in automake 1.11.2, which we do not yet require,
dnl    so kludge up a replacement for the case where it isn't there yet.)
m4_ifdef([AM_PROG_AR],
         [AM_PROG_AR],
         [AN_MAKEVAR([AR], [AC_PROG_AR])
          AN_PROGRAM([ar], [AC_PROG_AR])
          AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [:])])
          AC_PROG_AR])
194

195
196
197
198
199
200
dnl Check whether the above macro has settled for a simply named tool even
dnl though we're cross compiling. We must do this before running AC_PROG_CC,
dnl because that will find any cc on the system, not only the cross-compiler,
dnl and then verify that a binary built with this compiler runs on the
dnl build system. It will then come to the false conclusion that we're not
dnl cross-compiling.
201
202
if test "x$enable_tool_name_check" != "xno"; then
    if test "x$ac_tool_warned" = "xyes"; then
203
        AC_MSG_ERROR([We are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
204
	elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
205
206
207
208
		AC_MSG_ERROR([We think we are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
	fi
fi

209
AC_PROG_CC
210
AC_PROG_CPP
211
212
AC_PROG_MAKE_SET
AC_PROG_RANLIB
213
AC_PROG_SED
214

215
216
217
AC_ARG_VAR([PERL], [path to Perl binary])
AC_CHECK_PROGS([PERL], [perl])
AM_CONDITIONAL(USE_PERL, [test "x$ac_cv_prog_PERL" != "x"])
218

219
220
dnl check for asciidoc and a2x
AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
221
AC_PATH_PROGS([A2X], [a2x a2x.py], none)
222

223
AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
224

225
AM_PROG_CC_C_O
226
AC_PROG_CC_C99
227

228
AC_ARG_VAR([PYTHON], [path to Python binary])
229
AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
230
231
232
233
234
if test "x$PYTHON" = "x"; then
  AC_MSG_WARN([Python unavailable; some tests will not be run.])
fi
AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])

235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
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])])
250
 if test "$tor_cv_flexarray" = "yes"; then
251
   AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
252
 else
253
   AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
254
255
256
 fi
])

257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
      tor_cv_c_c99_decl,
      [AC_COMPILE_IFELSE(
         [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
	 [tor_cv_c_c99_decl=yes],
	 [tor_cv_c_c99_decl=no] )])
if test "$tor_cv_c_c99_decl" != "yes"; then
  AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
fi

AC_CACHE_CHECK([for working C99 designated initializers],
      tor_cv_c_c99_designated_init,
      [AC_COMPILE_IFELSE(
         [AC_LANG_PROGRAM([struct s { int a; int b; };],
  	       [[ struct s ss = { .b = 5, .a = 6 }; ]])],
	 [tor_cv_c_c99_designated_init=yes],
	 [tor_cv_c_c99_designated_init=no] )])

if test "$tor_cv_c_c99_designated_init" != "yes"; then
  AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
fi

279
280
TORUSER=_tor
AC_ARG_WITH(tor-user,
281
        AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
282
283
284
285
286
287
288
289
        [
           TORUSER=$withval
        ]
)
AC_SUBST(TORUSER)

TORGROUP=_tor
AC_ARG_WITH(tor-group,
290
        AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
291
292
293
294
295
296
        [
           TORGROUP=$withval
        ]
)
AC_SUBST(TORGROUP)

297

298
dnl If _WIN32 is defined and non-zero, we are building for win32
299
AC_MSG_CHECKING([for win32])
300
AC_RUN_IFELSE([AC_LANG_SOURCE([
301
int main(int c, char **v) {
302
303
#ifdef _WIN32
#if _WIN32
304
305
306
307
308
309
310
  return 0;
#else
  return 1;
#endif
#else
  return 2;
#endif
311
}])],
312
bwin32=true; AC_MSG_RESULT([yes]),
313
314
bwin32=false; AC_MSG_RESULT([no]),
bwin32=cross; AC_MSG_RESULT([cross])
315
316
)

317
if test "$bwin32" = "cross"; then
318
AC_MSG_CHECKING([for win32 (cross)])
319
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
320
#ifdef _WIN32
321
322
323
324
325
int main(int c, char **v) {return 0;}
#else
#error
int main(int c, char **v) {return x(y);}
#endif
326
])],
327
328
329
330
bwin32=true; AC_MSG_RESULT([yes]),
bwin32=false; AC_MSG_RESULT([no]))
fi

331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
AH_BOTTOM([
#ifdef _WIN32
/* Defined to access windows functions and definitions for >=WinXP */
# ifndef WINVER
#  define WINVER 0x0501
# endif

/* Defined to access _other_ windows functions and definitions for >=WinXP */
# ifndef _WIN32_WINNT
#  define _WIN32_WINNT 0x0501
# endif

/* Defined to avoid including some windows headers as part of Windows.h */
# ifndef WIN32_LEAN_AND_MEAN
#  define WIN32_LEAN_AND_MEAN 1
# endif
#endif
])

Nick Mathewson's avatar
Nick Mathewson committed
350

351
AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
352

353
354
dnl Enable C99 when compiling with MIPSpro
AC_MSG_CHECKING([for MIPSpro compiler])
355
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
356
357
358
359
#if (defined(__sgi) && defined(_COMPILER_VERSION))
#error
  return x(y);
#endif
360
])],
361
bmipspro=false; AC_MSG_RESULT(no),
362
bmipspro=true; AC_MSG_RESULT(yes))
363

364
if test "$bmipspro" = "true"; then
365
366
367
  CFLAGS="$CFLAGS -c99"
fi

368
369
AC_C_BIGENDIAN

370
AC_SEARCH_LIBS(socket, [socket network])
371
AC_SEARCH_LIBS(gethostbyname, [nsl])
372
AC_SEARCH_LIBS(dlopen, [dl])
373
AC_SEARCH_LIBS(inet_aton, [resolv])
374
AC_SEARCH_LIBS(backtrace, [execinfo])
375
376
377
378
379
380
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
381

382
383
AC_SEARCH_LIBS(pthread_create, [pthread])
AC_SEARCH_LIBS(pthread_detach, [pthread])
384

385
386
AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
387

388
AC_CHECK_FUNCS(
389
        _NSGetEnviron \
390
391
	RtlSecureZeroMemory \
	SecureZeroMemory \
Sebastian Hahn's avatar
Sebastian Hahn committed
392
        accept4 \
Nick Mathewson's avatar
Nick Mathewson committed
393
394
        backtrace \
        backtrace_symbols_fd \
395
	eventfd \
396
	explicit_bzero \
397
	timingsafe_memcmp \
398
399
400
        flock \
        ftime \
        getaddrinfo \
Sebastian Hahn's avatar
Sebastian Hahn committed
401
        getifaddrs \
402
        getpass \
403
404
405
        getrlimit \
        gettimeofday \
        gmtime_r \
406
	htonll \
407
        inet_aton \
Sebastian Hahn's avatar
Sebastian Hahn committed
408
        ioctl \
409
        issetugid \
410
        llround \
411
        localtime_r \
Sebastian Hahn's avatar
Sebastian Hahn committed
412
        lround \
413
        memmem \
414
        memset_s \
415
416
	pipe \
	pipe2 \
417
        prctl \
418
	readpassphrase \
Sebastian Hahn's avatar
Sebastian Hahn committed
419
        rint \
Nick Mathewson's avatar
Nick Mathewson committed
420
        sigaction \
421
        socketpair \
422
	statvfs \
423
424
        strlcat \
        strlcpy \
425
	strnlen \
426
427
428
429
        strptime \
        strtok_r \
        strtoull \
        sysconf \
430
	sysctl \
Nick Mathewson's avatar
Nick Mathewson committed
431
	truncate \
432
        uname \
433
	usleep \
434
        vasprintf \
435
	_vscprintf
436
)
437

438
439
440
441
442
# Apple messed up when they added two functions functions in Sierra: they
# forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
# checks. So we should only probe for those functions if we are sure that we
# are not targetting OSX 10.11 or earlier.
AC_MSG_CHECKING([for a pre-Sierra OSX build target])
443
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
444
445
#ifdef __APPLE__
#  include <AvailabilityMacros.h>
446
447
#  ifndef MAC_OS_X_VERSION_10_12
#    define MAC_OS_X_VERSION_10_12 101200
448
449
#  endif
#  if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
450
#    if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
451
452
453
454
#      error "Running on Mac OSX 10.11 or earlier"
#    endif
#  endif
#endif
455
]], [[]])],
456
457
458
459
460
461
462
463
464
465
   [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
   [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])

if test "$on_macos_pre_10_12" = "no"; then
  AC_CHECK_FUNCS(
        clock_gettime \
        getentropy \
  )
fi

466
if test "$bwin32" != "true"; then
467
468
  AC_CHECK_HEADERS(pthread.h)
  AC_CHECK_FUNCS(pthread_create)
469
  AC_CHECK_FUNCS(pthread_condattr_setclock)
470
471
fi

472
if test "$bwin32" = "true"; then
473
474
475
476
477
478
479
  AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
#include <windows.h>
#include <conio.h>
#include <wchar.h>
                 ])
fi

480
481
AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
482

483
dnl ------------------------------------------------------
484
dnl Where do you live, libevent?  And how do we call you?
485

486
if test "$bwin32" = "true"; then
487
  TOR_LIB_WS32=-lws2_32
488
  TOR_LIB_IPHLPAPI=-liphlpapi
489
490
  # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  # think it's actually necessary.
491
  TOR_LIB_GDI=-lgdi32
Nick Mathewson's avatar
   
Nick Mathewson committed
492
else
493
494
  TOR_LIB_WS32=
  TOR_LIB_GDI=
Nick Mathewson's avatar
   
Nick Mathewson committed
495
fi
496
497
AC_SUBST(TOR_LIB_WS32)
AC_SUBST(TOR_LIB_GDI)
498
AC_SUBST(TOR_LIB_IPHLPAPI)
Nick Mathewson's avatar
   
Nick Mathewson committed
499

500
tor_libevent_pkg_redhat="libevent"
501
tor_libevent_pkg_debian="libevent-dev"
502
503
504
tor_libevent_devpkg_redhat="libevent-devel"
tor_libevent_devpkg_debian="libevent-dev"

505
506
507
508
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 "$enable_static_libevent" = "yes"; then
509
    if test "$have_rt" = "yes"; then
510
511
512
513
514
      STATIC_LIBEVENT_FLAGS=" -lrt "
    fi
fi

TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
515
#ifdef _WIN32
516
517
#include <winsock2.h>
#endif
518
#include <sys/time.h>
Roger Dingledine's avatar
Roger Dingledine committed
519
#include <sys/types.h>
520
#include <event2/event.h>], [
521
#ifdef _WIN32
522
523
#include <winsock2.h>
#endif
524
525
struct event_base;
struct event_base *event_base_new(void);],
526
    [
527
#ifdef _WIN32
528
{WSADATA d; WSAStartup(0x101,&d); }
529
#endif
530
event_base_new();
531
], [--with-libevent-dir], [/opt/libevent])
532

533
dnl Determine the incantation needed to link libevent.
534
535
save_LIBS="$LIBS"
save_LDFLAGS="$LDFLAGS"
536
save_CPPFLAGS="$CPPFLAGS"
537
538

LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
539
LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
540
CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
541

542
543
AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)

544
545
546
547
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
548
     TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
549
550
   fi
else
551
     if test "x$ac_cv_header_event2_event_h" = "xyes"; then
Nick Mathewson's avatar
Nick Mathewson committed
552
553
       AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
       AC_SEARCH_LIBS(evdns_base_new, [event event_extra], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for evdns_base_new"))
554

555
       if test "$ac_cv_search_event_new" != "none required"; then
556
557
         TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
       fi
558
       if test "$ac_cv_search_evdns_base_new" != "none required"; then
559
560
561
         TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
       fi
     else
562
       AC_MSG_ERROR("libevent2 is required but the headers could not be found")
563
     fi
564
565
fi

566
567
568
569
570
dnl Now check for particular libevent functions.
AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
                evutil_secure_rng_add_bytes \
])

571
572
573
574
LIBS="$save_LIBS"
LDFLAGS="$save_LDFLAGS"
CPPFLAGS="$save_CPPFLAGS"

575
576
577
578
579
dnl Check that libevent is at least at version 2.0.10, the first stable
dnl release of its series
CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
AC_MSG_CHECKING([whether Libevent is new enough])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
580
#include <event2/event.h>
581
#if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
582
583
584
585
586
#error
int x = y(zz);
#else
int x = 1;
#endif
587
588
589
590
591
592
593
594
])], [ AC_MSG_RESULT([yes]) ],
   [ AC_MSG_RESULT([no])
     AC_MSG_ERROR([Libevent is not new enough.  We require 2.0.10-stable or later]) ] )

LIBS="$save_LIBS"
LDFLAGS="$save_LDFLAGS"
CPPFLAGS="$save_CPPFLAGS"

595
AC_SUBST(TOR_LIBEVENT_LIBS)
596

597
598
599
600
601
602
603
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="$LIBS"
604
605
606
AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
if test "$ac_cv_search_pow" != "none required"; then
    TOR_LIB_MATH="$ac_cv_search_pow"
607
608
609
610
fi
LIBS="$save_LIBS"
AC_SUBST(TOR_LIB_MATH)

611
dnl ------------------------------------------------------
612
dnl Where do you live, openssl?  And how do we call you?
613

614
tor_openssl_pkg_redhat="openssl"
615
tor_openssl_pkg_debian="libssl-dev"
616
617
618
tor_openssl_devpkg_redhat="openssl-devel"
tor_openssl_devpkg_debian="libssl-dev"

619
620
ALT_openssl_WITHVAL=""
AC_ARG_WITH(ssl-dir,
621
  AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
622
  [
623
      if test "x$withval" != "xno" && test "x$withval" != "x"; then
624
625
626
627
         ALT_openssl_WITHVAL="$withval"
      fi
  ])

628
TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
629
630
    [#include <openssl/rand.h>],
    [void RAND_add(const void *buf, int num, double entropy);],
631
    [RAND_add((void*)0,0,0);], [],
632
    [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
633

634
635
dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()

636
637
638
639
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
640
     TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
641
642
   fi
else
643
     TOR_OPENSSL_LIBS="-lssl -lcrypto"
644
645
646
fi
AC_SUBST(TOR_OPENSSL_LIBS)

647
648
649
650
651
652
653
dnl Now check for particular openssl functions.
save_LIBS="$LIBS"
save_LDFLAGS="$LDFLAGS"
save_CPPFLAGS="$CPPFLAGS"
LIBS="$TOR_OPENSSL_LIBS $LIBS"
LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
654

655
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
656
#include <openssl/opensslv.h>
657
#if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
658
659
#error "too old"
#endif
660
   ]], [[]])],
661
   [ : ],
662
   [ AC_MSG_ERROR([OpenSSL is too old. We require 1.0.1 or later. You can specify a path to a newer one with --with-openssl-dir.]) ])
663

664
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
665
666
667
668
669
670
671
672
#include <openssl/opensslv.h>
#include <openssl/evp.h>
#if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
#error "no ECC"
#endif
#if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
#error "curves unavailable"
#endif
673
   ]], [[]])],
674
   [ : ],
675
   [ AC_MSG_ERROR([OpenSSL is built without full ECC support, including curves P256 and P224. You can specify a path to one with ECC support with --with-openssl-dir.]) ])
676

677
678
679
680
AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
[#include <openssl/ssl.h>
])

681
682
683
684
685
AC_CHECK_FUNCS([ \
		SSL_SESSION_get_master_key \
		SSL_get_server_random \
                SSL_get_client_ciphers \
                SSL_get_client_random \
686
		SSL_CIPHER_find \
687
		TLS_method
688
	       ])
rl1987's avatar
rl1987 committed
689
690
691
692

dnl Check if OpenSSL has scrypt implementation.
AC_CHECK_FUNCS([ EVP_PBE_scrypt ])

693
694
695
696
697
dnl Check if OpenSSL structures are opaque
AC_CHECK_MEMBERS([SSL.state], , ,
[#include <openssl/ssl.h>
])

698
699
700
701
LIBS="$save_LIBS"
LDFLAGS="$save_LDFLAGS"
CPPFLAGS="$save_CPPFLAGS"

702
703
704
dnl ------------------------------------------------------
dnl Where do you live, zlib?  And how do we call you?

705
706
707
708
tor_zlib_pkg_redhat="zlib"
tor_zlib_pkg_debian="zlib1g"
tor_zlib_devpkg_redhat="zlib-devel"
tor_zlib_devpkg_debian="zlib1g-dev"
709
710
711
712

TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
    [#include <zlib.h>],
    [const char * zlibVersion(void);],
713
    [zlibVersion();], [--with-zlib-dir],
714
715
    [/opt/zlib])

716
717
718
719
720
721
722
723
724
725
726
727
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)

728
729
730
731
732
733
734
735
736
737
738
739
740
dnl ----------------------------------------------------------------------
dnl Check if libcap is available for capabilities.

tor_cap_pkg_debian="libcap2"
tor_cap_pkg_redhat="libcap"
tor_cap_devpkg_debian="libcap-dev"
tor_cap_devpkg_redhat="libcap-devel"

AC_CHECK_LIB([cap], [cap_init], [],
  AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
)
AC_CHECK_FUNCS(cap_set_proc)

741
742
743
744
745
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.
746

747
all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
748
all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_CAP_LIBS"
749

750
751
752
753
754
CFLAGS_FTRAPV=
CFLAGS_FWRAPV=
CFLAGS_ASAN=
CFLAGS_UBSAN=

Nick Mathewson's avatar
Nick Mathewson committed
755

756
757
758
759
760
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
#if !defined(__clang__)
#error
#endif])], have_clang=yes, have_clang=no)

761
if test "x$enable_gcc_hardening" != "xno"; then
762
    CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
763
    if test "x$have_clang" = "xyes"; then
764
765
        TOR_CHECK_CFLAGS(-Qunused-arguments)
    fi
766
767
768
    TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
    AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
    AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
769
m4_ifdef([AS_VAR_IF],[
770
771
772
773
    AS_VAR_IF(can_compile, [yes],
        AS_VAR_IF(can_link, [yes],
                  [],
                  AC_MSG_ERROR([We tried to build with stack protection; it looks like your compiler supports it but your libc does not provide it. Are you missing libssp? (You can --disable-gcc-hardening to ignore this error.)]))
774
        )])
775
776
    AS_VAR_POPDEF([can_link])
    AS_VAR_POPDEF([can_compile])
777
778
    TOR_CHECK_CFLAGS(-Wstack-protector)
    TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
Nick Mathewson's avatar
Nick Mathewson committed
779
    if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
780
781
782
       TOR_CHECK_CFLAGS(-fPIE)
       TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
    fi
783
    TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
784
fi
785

786
if test "$fragile_hardening" = "yes"; then
787
788
789
790
791
    TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
   if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
      AC_MSG_WARN([The compiler supports -ftrapv, but for some reason I was not able to link with -ftrapv. Are you missing run-time support? Run-time hardening will not work as well as it should.])
   fi

792
   if test "$tor_cv_cflags__ftrapv" != "yes"; then
793
     AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
794
795
796
797
798
799
800
801
802
803
804
805
806
   fi

   TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
    if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
      AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.so, and with Clang you need libclang_rt.ubsan*])
    fi

   TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
    if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
      AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.so, and with Clang you need libclang_rt.ubsan*])
    fi

TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
807
808
fi

809
810
811
CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"

812
mulodi_fixes_ftrapv=no
813
814
815
816
817
818
819
820
821
822
823
if test "$have_clang" = "yes"; then
  saved_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  AC_LINK_IFELSE([
      AC_LANG_SOURCE([[
          #include <stdint.h>
          #include <stdlib.h>
	  int main(int argc, char **argv)
	  {
            int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
824
	                * (int64_t)atoi(argv[3]);
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
	    return x == 9;
	  } ]])],
	  [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
	  [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  if test "$ftrapv_can_link" = "no"; then
    AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
    AC_LINK_IFELSE([
      AC_LANG_SOURCE([[
          #include <stdint.h>
          #include <stdlib.h>
	  int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
             *overflow=0;
	     return a;
          }
	  int main(int argc, char **argv)
	  {
            int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
842
	                * (int64_t)atoi(argv[3]);
843
844
845
846
847
848
849
850
	    return x == 9;
	  } ]])],
	  [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
	  [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  fi
  CFLAGS="$saved_CFLAGS"
fi

851
852
AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")

853
854
855
856
857
858
859
860
dnl These cflags add bunches of branches, and we haven't been able to
dnl persuade ourselves that they're suitable for code that needs to be
dnl constant time.
AC_SUBST(CFLAGS_BUGTRAP)
dnl These cflags are variant ones sutable for code that needs to be
dnl constant-time.
AC_SUBST(CFLAGS_CONSTTIME)

861
if test "x$enable_linker_hardening" != "xno"; then
862
863
    TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
fi
864

865
866
867
# For backtrace support
TOR_CHECK_LDFLAGS(-rdynamic)

868
dnl ------------------------------------------------------
869
870
871
872
dnl Now see if we have a -fomit-frame-pointer compiler option.

saved_CFLAGS="$CFLAGS"
TOR_CHECK_CFLAGS(-fomit-frame-pointer)
873
F_OMIT_FRAME_POINTER=''
874
if test "$saved_CFLAGS" != "$CFLAGS"; then
875
  if test "$fragile_hardening" = "yes"; then
876
877
    F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  fi
878
879
880
881
fi
CFLAGS="$saved_CFLAGS"
AC_SUBST(F_OMIT_FRAME_POINTER)

882
883
884
885
886
887
888
dnl ------------------------------------------------------
dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
dnl for us, as GCC 4.6 and later do at many optimization levels), then
dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
dnl code will work.
TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)

889
890
891
dnl ============================================================
dnl Check for libseccomp

892
893
894
895
if test "x$enable_seccomp" != "xno"; then
  AC_CHECK_HEADERS([seccomp.h])
  AC_SEARCH_LIBS(seccomp_init, [seccomp])
fi
896

897
898
899
900
901
902
dnl ============================================================
dnl Check for libscrypt

if test "x$enable_libscrypt" != "xno"; then
  AC_CHECK_HEADERS([libscrypt.h])
  AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
903
  AC_CHECK_FUNCS([libscrypt_scrypt])
904
905
fi

906
907
908
909
910
911
912
913
914
915
dnl ============================================================
dnl We need an implementation of curve25519.

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

916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
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
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)));
  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;
      ])],
  [tor_cv_can_use_curve25519_donna_c64=yes],
      [tor_cv_can_use_curve25519_donna_c64=no],
  [AC_LINK_IFELSE(
        [AC_LANG_PROGRAM([dnl
      #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;
      ])],
          [tor_cv_can_use_curve25519_donna_c64=cross],
      [tor_cv_can_use_curve25519_donna_c64=no])])])

AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
                  nacl/crypto_scalarmult_curve25519.h])

AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  tor_cv_can_use_curve25519_nacl,
  [tor_saved_LIBS="$LIBS"
   LIBS="$LIBS -lnacl"
   AC_LINK_IFELSE(
     [AC_LANG_PROGRAM([dnl
       #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
       #include <crypto_scalarmult_curve25519.h>
   #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
   #include <nacl/crypto_scalarmult_curve25519.h>
   #endif
       #ifdef crypto_scalarmult_curve25519_ref_BYTES
   #error Hey, this is the reference implementation! That's not fast.
   #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

985
 if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
986
987
   build_curve25519_donna_c64=yes
   use_curve25519_donna=yes
988
 elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
989
990
991
992
993
994
   use_curve25519_nacl=yes
   CURVE25519_LIBS=-lnacl
 else
   build_curve25519_donna=yes
   use_curve25519_donna=yes
 fi
995

996
if test "x$use_curve25519_donna" = "xyes"; then
997
998
999
  AC_DEFINE(USE_CURVE25519_DONNA, 1,
            [Defined if we should use an internal curve25519_donna{,_c64} implementation])
fi
1000
if test "x$use_curve25519_nacl" = "xyes"; then
1001
1002
1003
  AC_DEFINE(USE_CURVE25519_NACL, 1,
            [Defined if we should use a curve25519 from nacl])
fi
1004
1005
1006
1007
AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  test "x$build_curve25519_donna" = "xyes")
AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  test "x$build_curve25519_donna_c64" = "xyes")
1008
1009
AC_SUBST(CURVE25519_LIBS)

1010
dnl Make sure to enable support for large off_t if available.
1011
1012
AC_SYS_LARGEFILE

1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
AC_CHECK_HEADERS([assert.h \
                  errno.h \
                  fcntl.h \
                  signal.h \
                  string.h \
                  sys/capability.h \
                  sys/fcntl.h \
                  sys/stat.h \
                  sys/time.h \
                  sys/types.h \
                  time.h \
                  unistd.h \
                  arpa/inet.h \
                  crt_externs.h \
                  execinfo.h \
                  grp.h \
                  ifaddrs.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 \
                  readpassphrase.h \
                  stdint.h \
                  sys/eventfd.h \
                  sys/file.h \
                  sys/ioctl.h \
                  sys/limits.h \
                  sys/mman.h \
                  sys/param.h \
                  sys/prctl.h \
Nick Mathewson's avatar
Nick Mathewson committed
1050
		  sys/random.h \
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
                  sys/resource.h \
                  sys/select.h \
                  sys/socket.h \
                  sys/statvfs.h \
                  sys/syscall.h \
                  sys/sysctl.h \
                  sys/syslimits.h \
                  sys/time.h \
                  sys/types.h \
                  sys/un.h \
                  sys/utime.h \
                  sys/wait.h \
                  syslog.h \
                  utime.h])
1065

1066
1067
AC_CHECK_HEADERS(sys/param.h)

1068
AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
1069
1070
1071
1072
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
1073
1074
#include <sys/socket.h>
#endif])
1075
AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
1076
1077
1078
1079
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
1080
#include <sys/socket.h>
1081
1082
1083
#endif
#ifdef HAVE_NET_IF_H
#include <net/if.h>
1084
1085
1086
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
1087
#endif])
1088
1089
1090
1091
1092
1093
1094
1095

AC_CHECK_HEADERS(linux/if.h,[],[],
[
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
])

1096
AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
1097
        linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
1098
1099
1100
1101
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
1102
#include <sys/socket.h>
1103
#endif
1104
1105
1106
1107
1108
1109
1110
1111
1112
#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
1113
1114
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
1115
#endif])
1116

1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
        linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#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
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_LINUX_IF_H
#include <linux/if.h>
#endif])

1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
transparent_ok=0
if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  transparent_ok=1
fi
if test "x$linux_netfilter_ipv4" = "x1"; then
  transparent_ok=1
fi
if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  transparent_ok=1
fi
if test "x$transparent_ok" = "x1"; then
  AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
else
  AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
1155
1156
fi

1157
1158
1159
1160
1161
1162
1163
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])
1164

1165
1166
1167
dnl In case we aren't given a working stdint.h, we'll need to grow our own.
dnl Watch out.

1168
1169
1170
1171
1172
1173
1174
1175
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)
1176
1177
AC_CHECK_SIZEOF(intptr_t)
AC_CHECK_SIZEOF(uintptr_t)