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.
4 dnl See LICENSE for licensing information
6 AC_INIT([tor],[0.2.5.0-alpha-dev])
7 AC_CONFIG_SRCDIR([src/or/main.c])
8 AC_CONFIG_MACRO_DIR([m4])
10 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
11 AC_CONFIG_HEADERS([orconfig.h])
15 if test -f /etc/redhat-release ; then
16 if test -f /usr/kerberos/include ; then
17 CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
21 # Not a no-op; we want to make sure that CPPFLAGS is set before we use
22 # the += operator on it in src/or/Makefile.am
23 CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
25 #XXXX020 We should make these enabled or not, before 0.2.0.x-final
26 AC_ARG_ENABLE(buf-freelists,
27 AS_HELP_STRING(--disable-buf-freelists, disable freelists for buffer RAM))
28 AC_ARG_ENABLE(openbsd-malloc,
29 AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd. Linux only))
30 AC_ARG_ENABLE(instrument-downloads,
31 AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
32 AC_ARG_ENABLE(static-openssl,
33 AS_HELP_STRING(--enable-static-openssl, Link against a static openssl library. Requires --with-openssl-dir))
34 AC_ARG_ENABLE(static-libevent,
35 AS_HELP_STRING(--enable-static-libevent, Link against a static libevent library. Requires --with-libevent-dir))
36 AC_ARG_ENABLE(static-zlib,
37 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 AC_ARG_ENABLE(curve25519,
41 AS_HELP_STRING(--disable-curve25519, Build Tor with no curve25519 elliptic-curve crypto support))
43 if test "$enable_static_tor" = "yes"; then
44 enable_static_libevent="yes";
45 enable_static_openssl="yes";
46 enable_static_zlib="yes";
47 CFLAGS="$CFLAGS -static"
50 if test x$enable_buf_freelists != xno; then
51 AC_DEFINE(ENABLE_BUF_FREELISTS, 1,
52 [Defined if we try to use freelists for buffer RAM chunks])
54 AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
55 if test x$enable_instrument_downloads = xyes; then
56 AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
57 [Defined if we want to keep track of how much of each kind of resource we download.])
60 AC_ARG_ENABLE(transparent,
61 AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
62 [case "${enableval}" in
63 yes) transparent=true ;;
64 no) transparent=false ;;
65 *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
66 esac], [transparent=true])
68 AC_ARG_ENABLE(asciidoc,
69 AS_HELP_STRING(--disable-asciidoc, don't use asciidoc (disables building of manpages)),
70 [case "${enableval}" in
73 *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
74 esac], [asciidoc=true])
76 # By default, we're not ready to ship a NAT-PMP aware Tor
77 AC_ARG_ENABLE(nat-pmp,
78 AS_HELP_STRING(--enable-nat-pmp, enable NAT-PMP support),
79 [case "${enableval}" in
82 * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
83 esac], [natpmp=false])
85 # By default, we're not ready to ship a UPnP aware Tor
87 AS_HELP_STRING(--enable-upnp, enable UPnP support),
88 [case "${enableval}" in
91 * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
95 AC_ARG_ENABLE(threads,
96 AS_HELP_STRING(--disable-threads, disable multi-threading support))
98 if test x$enable_threads = x; then
101 # Don't try multithreading on solaris -- cpuworkers seem to lock.
102 AC_MSG_NOTICE([You are running Solaris; Sometimes threading makes
103 cpu workers lock up here, so I will disable threads.])
104 enable_threads="no";;
106 enable_threads="yes";;
110 if test "$enable_threads" = "yes"; then
111 AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
116 AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
120 AC_ARG_ENABLE(gcc-warnings,
121 AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
122 AC_ARG_ENABLE(gcc-warnings-advisory,
123 AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
125 dnl Adam shostack suggests the following for Windows:
126 dnl -D_FORTIFY_SOURCE=2 -fstack-protector-all
127 dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
128 dnl This requires that we use gcc and that we add -O2 to the CFLAGS.
129 AC_ARG_ENABLE(gcc-hardening,
130 AS_HELP_STRING(--disable-gcc-hardening, disable compiler security checks))
132 dnl Linker hardening options
133 dnl Currently these options are ELF specific - you can't use this with MacOSX
134 AC_ARG_ENABLE(linker-hardening,
135 AS_HELP_STRING(--disable-linker-hardening, disable linker security fixups))
137 AC_ARG_ENABLE(local-appdata,
138 AS_HELP_STRING(--enable-local-appdata, default to host local application data paths on Windows))
139 if test "$enable_local_appdata" = "yes"; then
140 AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
141 [Defined if we default to host local appdata paths on Windows])
145 AC_ARG_ENABLE(tor2web-mode,
146 AS_HELP_STRING(--enable-tor2web-mode, support tor2web non-anonymous mode),
147 [if test x$enableval = xyes; then
148 CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
151 AC_ARG_ENABLE(bufferevents,
152 AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))
154 dnl check for the correct "ar" when cross-compiling
155 AN_MAKEVAR([AR], [AC_PROG_AR])
156 AN_PROGRAM([ar], [AC_PROG_AR])
157 AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
165 dnl autoconf 2.59 appears not to support AC_PROG_SED
166 AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
168 dnl check for asciidoc and a2x
169 AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
170 AC_PATH_PROG([A2X], [a2x], none)
172 AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
174 AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
175 AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
176 AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
179 ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
180 AC_C_FLEXIBLE_ARRAY_MEMBER
182 dnl Maybe we've got an old autoconf...
183 AC_CACHE_CHECK([for flexible array members],
187 struct abc { int a; char b[]; };
189 struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
192 [tor_cv_c_flexarray=yes],
193 [tor_cv_c_flexarray=no])])
194 if test $tor_cv_flexarray = yes ; then
195 AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
197 AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
201 AC_PATH_PROG([SHA1SUM], [sha1sum], none)
202 AC_PATH_PROG([OPENSSL], [openssl], none)
205 AC_ARG_WITH(tor-user,
206 [ --with-tor-user=NAME Specify username for tor daemon ],
214 AC_ARG_WITH(tor-group,
215 [ --with-tor-group=NAME Specify group name for tor daemon ],
223 dnl If _WIN32 is defined and non-zero, we are building for win32
224 AC_MSG_CHECKING([for win32])
225 AC_RUN_IFELSE([AC_LANG_SOURCE([
226 int main(int c, char **v) {
237 bwin32=true; AC_MSG_RESULT([yes]),
238 bwin32=false; AC_MSG_RESULT([no]),
239 bwin32=cross; AC_MSG_RESULT([cross])
242 if test "$bwin32" = cross; then
243 AC_MSG_CHECKING([for win32 (cross)])
244 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
246 int main(int c, char **v) {return 0;}
249 int main(int c, char **v) {return x(y);}
252 bwin32=true; AC_MSG_RESULT([yes]),
253 bwin32=false; AC_MSG_RESULT([no]))
256 AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
258 dnl Enable C99 when compiling with MIPSpro
259 AC_MSG_CHECKING([for MIPSpro compiler])
260 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
261 #if (defined(__sgi) && defined(_COMPILER_VERSION))
266 bmipspro=false; AC_MSG_RESULT(no),
267 bmipspro=true; AC_MSG_RESULT(yes))
269 if test "$bmipspro" = true; then
270 CFLAGS="$CFLAGS -c99"
275 AC_SEARCH_LIBS(socket, [socket network])
276 AC_SEARCH_LIBS(gethostbyname, [nsl])
277 AC_SEARCH_LIBS(dlopen, [dl])
278 AC_SEARCH_LIBS(inet_aton, [resolv])
280 AC_SEARCH_LIBS([clock_gettime], [rt])
281 if test "$LIBS" != "$saved_LIBS"; then
282 # Looks like we need -lrt for clock_gettime().
286 if test "$enable_threads" = "yes"; then
287 AC_SEARCH_LIBS(pthread_create, [pthread])
288 AC_SEARCH_LIBS(pthread_detach, [pthread])
291 dnl -------------------------------------------------------------------
292 dnl Check for functions before libevent, since libevent-1.2 apparently
293 dnl exports strlcpy without defining it in a header.
327 if test "$enable_threads" = "yes"; then
328 AC_CHECK_HEADERS(pthread.h)
329 AC_CHECK_FUNCS(pthread_create)
332 dnl ------------------------------------------------------
333 dnl Where do you live, libevent? And how do we call you?
335 if test "$bwin32" = true; then
336 TOR_LIB_WS32=-lws2_32
337 TOR_LIB_IPHLPAPI=-liphlpapi
338 # Some of the cargo-cults recommend -lwsock32 as well, but I don't
339 # think it's actually necessary.
345 AC_SUBST(TOR_LIB_WS32)
346 AC_SUBST(TOR_LIB_GDI)
347 AC_SUBST(TOR_LIB_IPHLPAPI)
349 dnl We need to do this before we try our disgusting hack below.
350 AC_CHECK_HEADERS([sys/types.h])
352 dnl This is a disgusting hack so we safely include older libevent headers.
353 AC_CHECK_TYPE(u_int64_t, unsigned long long)
354 AC_CHECK_TYPE(u_int32_t, unsigned long)
355 AC_CHECK_TYPE(u_int16_t, unsigned short)
356 AC_CHECK_TYPE(u_int8_t, unsigned char)
358 tor_libevent_pkg_redhat="libevent"
359 tor_libevent_pkg_debian="libevent-dev"
360 tor_libevent_devpkg_redhat="libevent-devel"
361 tor_libevent_devpkg_debian="libevent-dev"
363 dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
364 dnl linking for static builds.
365 STATIC_LIBEVENT_FLAGS=""
366 if test "$enable_static_libevent" = "yes"; then
367 if test "$have_rt" = yes; then
368 STATIC_LIBEVENT_FLAGS=" -lrt "
372 TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
374 #include <winsock2.h>
377 #include <sys/time.h>
378 #include <sys/types.h>
379 #include <event.h>], [
381 #include <winsock2.h>
383 void exit(int); void *event_init(void);],
386 {WSADATA d; WSAStartup(0x101,&d); }
388 event_init(); exit(0);
389 ], [--with-libevent-dir], [/opt/libevent])
391 dnl Now check for particular libevent functions.
393 save_LDFLAGS="$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 $CPPFLAGS"
398 AC_CHECK_FUNCS(event_get_version event_get_version_number event_get_method event_set_log_callback evdns_set_outgoing_bind_address event_base_loopexit)
399 AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
403 AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
406 LDFLAGS="$save_LDFLAGS"
407 CPPFLAGS="$save_CPPFLAGS"
410 AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
412 if test "$enable_static_libevent" = "yes"; then
413 if test "$tor_cv_library_libevent_dir" = "(system)"; then
414 AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
416 TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
419 TOR_LIBEVENT_LIBS="-levent"
422 dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
423 dnl we can do much better.
424 if test "$enable_bufferevents" = "yes" ; then
425 if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
426 AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
429 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
431 # Check for the right version. First see if version detection works.
432 AC_MSG_CHECKING([whether we can detect the Libevent version])
433 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
434 #include <event2/event.h>
435 #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
441 ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
442 [event_version_number_works=no; AC_MSG_RESULT([no])])
443 if test "$event_version_number_works" != 'yes'; then
444 AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
446 AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
447 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
448 #include <event2/event.h>
449 #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
455 ])], [ AC_MSG_RESULT([yes]) ],
456 [ AC_MSG_RESULT([no])
457 AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
463 LDFLAGS="$save_LDFLAGS"
464 CPPFLAGS="$save_CPPFLAGS"
466 AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
467 if test "$enable_bufferevents" = "yes"; then
468 AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
469 if test "$enable_static_libevent" = "yes"; then
470 TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
472 TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
475 AC_SUBST(TOR_LIBEVENT_LIBS)
477 dnl ------------------------------------------------------
478 dnl Where do you live, libm?
480 dnl On some platforms (Haiku/BeOS) the math library is
481 dnl part of libroot. In which case don't link against lm
484 AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
485 if test "$ac_cv_search_pow" != "none required"; then
486 TOR_LIB_MATH="$ac_cv_search_pow"
489 AC_SUBST(TOR_LIB_MATH)
491 dnl ------------------------------------------------------
492 dnl Where do you live, openssl? And how do we call you?
494 tor_openssl_pkg_redhat="openssl"
495 tor_openssl_pkg_debian="libssl"
496 tor_openssl_devpkg_redhat="openssl-devel"
497 tor_openssl_devpkg_debian="libssl-dev"
499 ALT_openssl_WITHVAL=""
501 [ --with-ssl-dir=PATH Obsolete alias for --with-openssl-dir ],
503 if test "x$withval" != xno && test "x$withval" != "x" ; then
504 ALT_openssl_WITHVAL="$withval"
508 TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
509 [#include <openssl/rand.h>],
510 [void RAND_add(const void *buf, int num, double entropy);],
511 [RAND_add((void*)0,0,0); exit(0);], [],
512 [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
514 dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
516 if test "$enable_static_openssl" = "yes"; then
517 if test "$tor_cv_library_openssl_dir" = "(system)"; then
518 AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
520 TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
523 TOR_OPENSSL_LIBS="-lssl -lcrypto"
525 AC_SUBST(TOR_OPENSSL_LIBS)
527 dnl ------------------------------------------------------
528 dnl Where do you live, zlib? And how do we call you?
530 tor_zlib_pkg_redhat="zlib"
531 tor_zlib_pkg_debian="zlib1g"
532 tor_zlib_devpkg_redhat="zlib-devel"
533 tor_zlib_devpkg_debian="zlib1g-dev"
535 TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
537 [const char * zlibVersion(void);],
538 [zlibVersion(); exit(0);], [--with-zlib-dir],
541 if test "$enable_static_zlib" = "yes"; then
542 if test "$tor_cv_library_zlib_dir" = "(system)"; then
543 AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
544 using --enable-static-zlib")
546 TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
551 AC_SUBST(TOR_ZLIB_LIBS)
553 dnl ---------------------------------------------------------------------
554 dnl Now that we know about our major libraries, we can check for compiler
555 dnl and linker hardening options. We need to do this with the libraries known,
556 dnl since sometimes the linker will like an option but not be willing to
557 dnl use it with a build of a library.
559 all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
560 all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
562 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
563 #if !defined(__clang__)
565 #endif])], have_clang=yes, have_clang=no)
567 if test x$enable_gcc_hardening != xno; then
568 CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
569 if test x$have_clang = xyes; then
570 TOR_CHECK_CFLAGS(-Qunused-arguments)
572 TOR_CHECK_CFLAGS(-fstack-protector-all)
573 TOR_CHECK_CFLAGS(-Wstack-protector)
574 TOR_CHECK_CFLAGS(-fwrapv)
575 TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
576 if test "$bwin32" = "false"; then
577 TOR_CHECK_CFLAGS(-fPIE)
578 TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
582 if test x$enable_linker_hardening != xno; then
583 TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
586 dnl ------------------------------------------------------
587 dnl Now see if we have a -fomit-frame-pointer compiler option.
589 saved_CFLAGS="$CFLAGS"
590 TOR_CHECK_CFLAGS(-fomit-frame-pointer)
591 if test "$saved_CFLAGS" != "$CFLAGS"; then
592 F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
594 F_OMIT_FRAME_POINTER=''
596 CFLAGS="$saved_CFLAGS"
597 AC_SUBST(F_OMIT_FRAME_POINTER)
599 dnl ------------------------------------------------------
600 dnl Where do you live, libnatpmp? And how do we call you?
601 dnl There are no packages for Debian or Redhat as of this patch
603 if test "$natpmp" = "true"; then
604 AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
605 TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
606 [#include <natpmp.h>],
610 #include <natpmp.h>],
613 natpmpresp_t response;
614 r = initnatpmp(&natpmp, 0, 0);],
615 [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
617 [--with-libnatpmp-dir],
622 dnl ------------------------------------------------------
623 dnl Where do you live, libminiupnpc? And how do we call you?
624 dnl There are no packages for Debian or Redhat as of this patch
626 if test "$upnp" = "true"; then
627 AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
629 dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
630 dnl to see if we have miniupnpc-1.5 or -1.6
631 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
632 [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])
634 if test "$miniupnpc15" = "true" ; then
635 AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
636 TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
637 [#include <miniupnpc/miniwget.h>
638 #include <miniupnpc/miniupnpc.h>
639 #include <miniupnpc/upnpcommands.h>],
640 [void upnpDiscover(int delay, const char * multicastif,
641 const char * minissdpdsock, int sameport);],
642 [upnpDiscover(1, 0, 0, 0); exit(0);],
643 [--with-libminiupnpc-dir],
646 TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
647 [#include <miniupnpc/miniwget.h>
648 #include <miniupnpc/miniupnpc.h>
649 #include <miniupnpc/upnpcommands.h>],
650 [void upnpDiscover(int delay, const char * multicastif,
651 const char * minissdpdsock, int sameport, int ipv6, int * error);],
652 [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
653 [--with-libminiupnpc-dir],
658 dnl ============================================================
659 dnl We need an implementation of curve25519.
661 dnl set these defaults.
663 build_curve25519_donna=no
664 build_curve25519_donna_c64=no
665 use_curve25519_donna=no
666 use_curve25519_nacl=no
669 if test x$enable_curve25519 != xno; then
671 dnl The best choice is using curve25519-donna-c64, but that requires
673 AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
674 tor_cv_can_use_curve25519_donna_c64,
676 [AC_LANG_PROGRAM([dnl
678 typedef unsigned uint128_t __attribute__((mode(TI)));
679 int func(uint64_t a, uint64_t b) {
680 uint128_t c = ((uint128_t)a) * b;
681 int ok = ((uint64_t)(c>>96)) == 522859 &&
682 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
683 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
684 (((uint64_t)(c))&0xffffffffL) == 0;
688 int ok = func( ((uint64_t)2000000000) * 1000000000,
689 ((uint64_t)1234567890) << 24);
692 [tor_cv_can_use_curve25519_donna_c64=yes],
693 [tor_cv_can_use_curve25519_donna_c64=no],
695 [AC_LANG_PROGRAM([dnl
697 typedef unsigned uint128_t __attribute__((mode(TI)));
698 int func(uint64_t a, uint64_t b) {
699 uint128_t c = ((uint128_t)a) * b;
700 int ok = ((uint64_t)(c>>96)) == 522859 &&
701 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
702 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
703 (((uint64_t)(c))&0xffffffffL) == 0;
707 int ok = func( ((uint64_t)2000000000) * 1000000000,
708 ((uint64_t)1234567890) << 24);
711 [tor_cv_can_use_curve25519_donna_c64=cross],
712 [tor_cv_can_use_curve25519_donna_c64=no])])])
714 AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
715 nacl/crypto_scalarmult_curve25519.h])
717 AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
718 tor_cv_can_use_curve25519_nacl,
719 [tor_saved_LIBS="$LIBS"
722 [AC_LANG_PROGRAM([dnl
723 #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
724 #include <crypto_scalarmult_curve25519.h>
725 #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
726 #include <nacl/crypto_scalarmult_curve25519.h>
728 #ifdef crypto_scalarmult_curve25519_ref_BYTES
729 #error Hey, this is the reference implementation! That's not fast.
732 unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
733 ])], [tor_cv_can_use_curve25519_nacl=yes],
734 [tor_cv_can_use_curve25519_nacl=no])
735 LIBS="$tor_saved_LIBS" ])
737 dnl Okay, now we need to figure out which one to actually use. Fall back
738 dnl to curve25519-donna.c
740 if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
741 build_curve25519_donna_c64=yes
742 use_curve25519_donna=yes
743 elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
744 use_curve25519_nacl=yes
745 CURVE25519_LIBS=-lnacl
747 build_curve25519_donna=yes
748 use_curve25519_donna=yes
750 have_a_curve25519=yes
753 if test x$have_a_curve25519 = xyes; then
754 AC_DEFINE(CURVE25519_ENABLED, 1,
755 [Defined if we have a curve25519 implementation])
757 if test x$use_curve25519_donna = xyes; then
758 AC_DEFINE(USE_CURVE25519_DONNA, 1,
759 [Defined if we should use an internal curve25519_donna{,_c64} implementation])
761 if test x$use_curve25519_nacl = xyes; then
762 AC_DEFINE(USE_CURVE25519_NACL, 1,
763 [Defined if we should use a curve25519 from nacl])
765 AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
766 AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
767 AM_CONDITIONAL(CURVE25519_ENABLED, test x$have_a_curve25519 = xyes)
768 AC_SUBST(CURVE25519_LIBS)
770 dnl Make sure to enable support for large off_t if available.
785 , , 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.))
787 dnl These headers are not essential
824 AC_CHECK_HEADERS(sys/param.h)
826 AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
827 [#ifdef HAVE_SYS_TYPES_H
828 #include <sys/types.h>
830 #ifdef HAVE_SYS_SOCKET_H
831 #include <sys/socket.h>
833 AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
834 [#ifdef HAVE_SYS_TYPES_H
835 #include <sys/types.h>
837 #ifdef HAVE_SYS_SOCKET_H
838 #include <sys/socket.h>
843 AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
844 linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
845 [#ifdef HAVE_SYS_TYPES_H
846 #include <sys/types.h>
848 #ifdef HAVE_SYS_SOCKET_H
849 #include <sys/socket.h>
854 #ifdef HAVE_LINUX_TYPES_H
855 #include <linux/types.h>
857 #ifdef HAVE_NETINET_IN6_H
858 #include <netinet/in6.h>
860 #ifdef HAVE_NETINET_IN_H
861 #include <netinet/in.h>
864 if test x$transparent = xtrue ; then
866 if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
869 if test x$linux_netfilter_ipv4 = x1 ; then
872 if test x$transparent_ok = x1 ; then
873 AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
875 *-*-openbsd* | *-*-bitrig*)
876 AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
879 AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
883 AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
884 [#ifdef HAVE_SYS_TYPES_H
885 #include <sys/types.h>
887 #ifdef HAVE_SYS_TIME_H
888 #include <sys/time.h>
891 dnl In case we aren't given a working stdint.h, we'll need to grow our own.
894 AC_CHECK_SIZEOF(int8_t)
895 AC_CHECK_SIZEOF(int16_t)
896 AC_CHECK_SIZEOF(int32_t)
897 AC_CHECK_SIZEOF(int64_t)
898 AC_CHECK_SIZEOF(uint8_t)
899 AC_CHECK_SIZEOF(uint16_t)
900 AC_CHECK_SIZEOF(uint32_t)
901 AC_CHECK_SIZEOF(uint64_t)
902 AC_CHECK_SIZEOF(intptr_t)
903 AC_CHECK_SIZEOF(uintptr_t)
905 dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
907 AC_CHECK_SIZEOF(char)
908 AC_CHECK_SIZEOF(short)
910 AC_CHECK_SIZEOF(long)
911 AC_CHECK_SIZEOF(long long)
912 AC_CHECK_SIZEOF(__int64)
913 AC_CHECK_SIZEOF(void *)
914 AC_CHECK_SIZEOF(time_t)
915 AC_CHECK_SIZEOF(size_t)
916 AC_CHECK_SIZEOF(pid_t)
918 AC_CHECK_TYPES([uint, u_char, ssize_t])
920 dnl used to include sockaddr_storage, but everybody has that.
921 AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
922 [#ifdef HAVE_SYS_TYPES_H
923 #include <sys/types.h>
925 #ifdef HAVE_NETINET_IN_H
926 #include <netinet/in.h>
928 #ifdef HAVE_NETINET_IN6_H
929 #include <netinet/in6.h>
931 #ifdef HAVE_SYS_SOCKET_H
932 #include <sys/socket.h>
935 #define _WIN32_WINNT 0x0501
936 #define WIN32_LEAN_AND_MEAN
937 #if defined(_MSC_VER) && (_MSC_VER < 1300)
940 #include <winsock2.h>
941 #include <ws2tcpip.h>
945 AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
946 [#ifdef HAVE_SYS_TYPES_H
947 #include <sys/types.h>
949 #ifdef HAVE_NETINET_IN_H
950 #include <netinet/in.h>
952 #ifdef HAVE_NETINET_IN6_H
953 #include <netinet/in6.h>
955 #ifdef HAVE_SYS_SOCKET_H
956 #include <sys/socket.h>
959 #define _WIN32_WINNT 0x0501
960 #define WIN32_LEAN_AND_MEAN
961 #if defined(_MSC_VER) && (_MSC_VER < 1300)
964 #include <winsock2.h>
965 #include <ws2tcpip.h>
970 AC_CHECK_TYPES([rlim_t], , ,
971 [#ifdef HAVE_SYS_TYPES_H
972 #include <sys/types.h>
974 #ifdef HAVE_SYS_TIME_H
975 #include <sys/time.h>
977 #ifdef HAVE_SYS_RESOURCE_H
978 #include <sys/resource.h>
982 AX_CHECK_SIGN([time_t],
983 [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
985 #ifdef HAVE_SYS_TYPES_H
986 #include <sys/types.h>
988 #ifdef HAVE_SYS_TIME_H
989 #include <sys/time.h>
996 if test "$ax_cv_decl_time_t_signed" = no; then
997 AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
1000 AX_CHECK_SIGN([size_t],
1001 [ tor_cv_size_t_signed=yes ],
1002 [ tor_cv_size_t_signed=no ], [
1003 #ifdef HAVE_SYS_TYPES_H
1004 #include <sys/types.h>
1008 if test "$ax_cv_decl_size_t_signed" = yes; then
1009 AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
1012 AX_CHECK_SIGN([enum always],
1013 [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
1015 enum always { AAA, BBB, CCC };
1018 AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
1019 #ifdef HAVE_SYS_SOCKET_H
1020 #include <sys/socket.h>
1024 # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
1026 AC_CHECK_SIZEOF(cell_t)
1028 # Now make sure that NULL can be represented as zero bytes.
1029 AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
1030 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1031 [[#include <stdlib.h>
1034 #ifdef HAVE_STDDEF_H
1037 int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
1038 return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
1039 [tor_cv_null_is_zero=yes],
1040 [tor_cv_null_is_zero=no],
1041 [tor_cv_null_is_zero=cross])])
1043 if test "$tor_cv_null_is_zero" = cross ; then
1044 # Cross-compiling; let's hope that the target isn't raving mad.
1045 AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
1048 if test "$tor_cv_null_is_zero" != no; then
1049 AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
1050 [Define to 1 iff memset(0) sets pointers to NULL])
1053 AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
1054 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1055 [[#include <stdlib.h>
1058 #ifdef HAVE_STDDEF_H
1061 int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
1062 return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
1063 [tor_cv_dbl0_is_zero=yes],
1064 [tor_cv_dbl0_is_zero=no],
1065 [tor_cv_dbl0_is_zero=cross])])
1067 if test "$tor_cv_dbl0_is_zero" = cross ; then
1068 # Cross-compiling; let's hope that the target isn't raving mad.
1069 AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
1072 if test "$tor_cv_dbl0_is_zero" != no; then
1073 AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
1074 [Define to 1 iff memset(0) sets doubles to 0.0])
1077 # And what happens when we malloc zero?
1078 AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
1079 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1080 [[#include <stdlib.h>
1083 #ifdef HAVE_STDDEF_H
1086 int main () { return malloc(0)?0:1; }]])],
1087 [tor_cv_malloc_zero_works=yes],
1088 [tor_cv_malloc_zero_works=no],
1089 [tor_cv_malloc_zero_works=cross])])
1091 if test "$tor_cv_malloc_zero_works" = cross; then
1092 # Cross-compiling; let's hope that the target isn't raving mad.
1093 AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
1096 if test "$tor_cv_malloc_zero_works" = yes; then
1097 AC_DEFINE([MALLOC_ZERO_WORKS], 1,
1098 [Define to 1 iff malloc(0) returns a pointer])
1101 # whether we seem to be in a 2s-complement world.
1102 AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
1103 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1104 [[int main () { int problem = ((-99) != (~99)+1);
1105 return problem ? 1 : 0; }]])],
1106 [tor_cv_twos_complement=yes],
1107 [tor_cv_twos_complement=no],
1108 [tor_cv_twos_complement=cross])])
1110 if test "$tor_cv_twos_complement" = cross ; then
1111 # Cross-compiling; let's hope that the target isn't raving mad.
1112 AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
1115 if test "$tor_cv_twos_complement" != no ; then
1116 AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
1117 [Define to 1 iff we represent negative integers with two's complement])
1120 # What does shifting a negative value do?
1121 AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
1122 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1123 [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
1124 [tor_cv_sign_extend=yes],
1125 [tor_cv_sign_extend=no],
1126 [tor_cv_sign_extend=cross])])
1128 if test "$tor_cv_sign_extend" = cross ; then
1129 # Cross-compiling; let's hope that the target isn't raving mad.
1130 AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
1133 if test "$tor_cv_sign_extend" != no ; then
1134 AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
1135 [Define to 1 iff right-shifting a negative value performs sign-extension])
1138 # Whether we should use the dmalloc memory allocation debugging library.
1139 AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
1140 AC_ARG_WITH(dmalloc,
1141 [ --with-dmalloc Use debug memory allocation library. ],
1142 [if [[ "$withval" = "yes" ]]; then
1148 fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
1151 if [[ $dmalloc -eq 1 ]]; then
1152 AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
1153 AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
1154 AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
1155 AC_DEFINE(DMALLOC_FUNC_CHECK, 1, [Enable dmalloc's malloc function check])
1156 AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
1159 AC_ARG_WITH(tcmalloc,
1160 [ --with-tcmalloc Use tcmalloc memory allocation library. ],
1161 [ tcmalloc=yes ], [ tcmalloc=no ])
1163 if test x$tcmalloc = xyes ; then
1164 LDFLAGS="-ltcmalloc $LDFLAGS"
1167 using_custom_malloc=no
1168 if test x$enable_openbsd_malloc = xyes ; then
1169 using_custom_malloc=yes
1171 if test x$tcmalloc = xyes ; then
1172 using_custom_malloc=yes
1174 if test $using_custom_malloc = no ; then
1175 AC_CHECK_FUNCS(mallinfo)
1178 # By default, we're going to assume we don't have mlockall()
1179 # bionic and other platforms have various broken mlockall subsystems.
1180 # Some systems don't have a working mlockall, some aren't linkable,
1181 # and some have it but don't declare it.
1182 AC_CHECK_FUNCS(mlockall)
1183 AC_CHECK_DECLS([mlockall], , , [
1184 #ifdef HAVE_SYS_MMAN_H
1185 #include <sys/mman.h>
1188 # Allow user to specify an alternate syslog facility
1189 AC_ARG_WITH(syslog-facility,
1190 [ --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
1191 syslog_facility="$withval", syslog_facility="LOG_DAEMON")
1192 AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
1193 AC_SUBST(LOGFACILITY)
1195 # Check if we have getresuid and getresgid
1196 AC_CHECK_FUNCS(getresuid getresgid)
1198 # Check for gethostbyname_r in all its glorious incompatible versions.
1199 # (This logic is based on that in Python's configure.in)
1200 AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
1201 [Define this if you have any gethostbyname_r()])
1203 AC_CHECK_FUNC(gethostbyname_r, [
1204 AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
1206 CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
1207 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
1211 struct hostent *h1, *h2;
1213 (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
1215 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1216 AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
1217 [Define this if gethostbyname_r takes 6 arguments])
1226 (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
1228 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1229 AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
1230 [Define this if gethostbyname_r takes 5 arguments])
1238 struct hostent_data hd;
1239 (void) gethostbyname_r(cp1,h1,&hd);
1241 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1242 AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
1243 [Define this if gethostbyname_r takes 3 arguments])
1253 AC_CACHE_CHECK([whether the C compiler supports __func__],
1254 tor_cv_have_func_macro,
1255 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1257 int main(int c, char **v) { puts(__func__); }])],
1258 tor_cv_have_func_macro=yes,
1259 tor_cv_have_func_macro=no))
1261 AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
1262 tor_cv_have_FUNC_macro,
1263 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1265 int main(int c, char **v) { puts(__FUNC__); }])],
1266 tor_cv_have_FUNC_macro=yes,
1267 tor_cv_have_FUNC_macro=no))
1269 AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
1270 tor_cv_have_FUNCTION_macro,
1271 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1273 int main(int c, char **v) { puts(__FUNCTION__); }])],
1274 tor_cv_have_FUNCTION_macro=yes,
1275 tor_cv_have_FUNCTION_macro=no))
1277 AC_CACHE_CHECK([whether we have extern char **environ already declared],
1278 tor_cv_have_environ_declared,
1279 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1280 /* We define _GNU_SOURCE here because it is also defined in compat.c.
1281 * Without it environ doesn't get declared. */
1283 #ifdef HAVE_UNISTD_H
1287 int main(int c, char **v) { char **t = environ; }])],
1288 tor_cv_have_environ_declared=yes,
1289 tor_cv_have_environ_declared=no))
1291 if test "$tor_cv_have_func_macro" = 'yes'; then
1292 AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
1295 if test "$tor_cv_have_FUNC_macro" = 'yes'; then
1296 AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
1299 if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
1300 AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
1301 [Defined if the compiler supports __FUNCTION__])
1304 if test "$tor_cv_have_environ_declared" = 'yes'; then
1305 AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
1306 [Defined if we have extern char **environ already declared])
1309 # $prefix stores the value of the --prefix command line option, or
1310 # NONE if the option wasn't set. In the case that it wasn't set, make
1311 # it be the default, so that we can use it to expand directories now.
1312 if test "x$prefix" = "xNONE"; then
1313 prefix=$ac_default_prefix
1316 # and similarly for $exec_prefix
1317 if test "x$exec_prefix" = "xNONE"; then
1321 if test "x$BUILDDIR" = "x"; then
1325 AH_TEMPLATE([BUILDDIR],[tor's build directory])
1326 AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
1328 if test "x$CONFDIR" = "x"; then
1329 CONFDIR=`eval echo $sysconfdir/tor`
1332 AH_TEMPLATE([CONFDIR],[tor's configuration directory])
1333 AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
1335 BINDIR=`eval echo $bindir`
1337 LOCALSTATEDIR=`eval echo $localstatedir`
1338 AC_SUBST(LOCALSTATEDIR)
1340 if test "$bwin32" = true; then
1341 # Test if the linker supports the --nxcompat and --dynamicbase options
1343 save_LDFLAGS="$LDFLAGS"
1344 LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
1345 AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
1346 AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
1347 [AC_MSG_RESULT([yes])]
1348 [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
1349 [AC_MSG_RESULT([no])]
1351 LDFLAGS="$save_LDFLAGS"
1354 # Set CFLAGS _after_ all the above checks, since our warnings are stricter
1355 # than autoconf's macros like.
1356 if test "$GCC" = yes; then
1357 # Disable GCC's strict aliasing checks. They are an hours-to-debug
1358 # accident waiting to happen.
1359 CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
1361 # Autoconf sets -g -O2 by default. Override optimization level
1362 # for non-gcc compilers
1364 enable_gcc_warnings=no
1365 enable_gcc_warnings_advisory=no
1368 # OS X Lion started deprecating the system openssl. Let's just disable
1369 # all deprecation warnings on OS X. Also, to potentially make the binary
1370 # a little smaller, let's enable dead_strip.
1374 CFLAGS="$CFLAGS -Wno-deprecated-declarations"
1375 LDFLAGS="$LDFLAGS -dead_strip" ;;
1378 # Add some more warnings which we use in development but not in the
1379 # released versions. (Some relevant gcc versions can't handle these.)
1380 if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
1382 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1383 #if !defined(__GNUC__) || (__GNUC__ < 4)
1385 #endif])], have_gcc4=yes, have_gcc4=no)
1387 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1388 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
1390 #endif])], have_gcc42=yes, have_gcc42=no)
1392 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1393 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
1395 #endif])], have_gcc43=yes, have_gcc43=no)
1397 save_CFLAGS="$CFLAGS"
1398 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1399 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
1400 have_shorten64_flag=no)
1401 CFLAGS="$save_CFLAGS"
1404 *-*-openbsd* | *-*-bitrig*)
1405 # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
1406 # That's fine, except that the headers don't pass -Wredundant-decls.
1407 # Therefore, let's disable -Wsystem-headers when we're building
1408 # with maximal warnings on OpenBSD.
1409 CFLAGS="$CFLAGS -Wno-system-headers" ;;
1412 CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
1413 CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
1414 CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
1415 CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
1416 CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
1418 if test x$enable_gcc_warnings = xyes; then
1419 CFLAGS="$CFLAGS -Werror"
1422 # Disabled, so we can use mallinfo(): -Waggregate-return
1424 if test x$have_gcc4 = xyes ; then
1425 # These warnings break gcc 3.3.5 and work on gcc 4.0.2
1426 CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement -Wold-style-definition"
1429 if test x$have_gcc42 = xyes ; then
1430 # These warnings break gcc 4.0.2 and work on gcc 4.2
1431 # XXXX020 See if any of these work with earlier versions.
1432 CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
1434 # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
1437 if test x$have_gcc42 = xyes && test x$have_clang = xno; then
1438 # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
1439 CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
1442 if test x$have_gcc43 = xyes ; then
1443 # These warnings break gcc 4.2 and work on gcc 4.3
1444 # XXXX020 See if any of these work with earlier versions.
1445 CFLAGS="$CFLAGS -Wextra -Warray-bounds"
1448 if test x$have_shorten64_flag = xyes ; then
1449 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1452 ##This will break the world on some 64-bit architectures
1453 # CFLAGS="$CFLAGS -Winline"
1458 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
1464 contrib/tor.logrotate
1468 src/config/torrc.sample
1471 if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
1472 regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
1473 for file in $regular_mans ; do
1474 if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
1475 echo "==================================";
1477 echo "You need asciidoc installed to be able to build the manpage.";
1478 echo "To build without manpages, use the --disable-asciidoc argument";
1479 echo "when calling configure.";
1481 echo "==================================";
1489 if test -x /usr/bin/perl && test -x ./contrib/updateVersions.pl ; then
1490 ./contrib/updateVersions.pl