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.
4 dnl See LICENSE for licensing information
6 AC_INIT([tor],[0.2.8.0-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])
17 if test -f /etc/redhat-release ; then
18 if test -f /usr/kerberos/include ; then
19 CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
23 # Not a no-op; we want to make sure that CPPFLAGS is set before we use
24 # the += operator on it in src/or/Makefile.am
25 CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
27 #XXXX020 We should make these enabled or not, before 0.2.0.x-final
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(unittests,
41 AS_HELP_STRING(--disable-unittests, [don't build unit tests for Tor. Risky!]))
42 AC_ARG_ENABLE(coverage,
43 AS_HELP_STRING(--enable-coverage, [enable coverage support in the unit-test build]))
44 AC_ARG_ENABLE(system-torrc,
45 AS_HELP_STRING(--disable-system-torrc, [don't look for a system-wide torrc file]))
47 AM_CONDITIONAL(UNITTESTS_ENABLED, test x$enable_unittests != xno)
48 AM_CONDITIONAL(COVERAGE_ENABLED, test x$enable_coverage = xyes)
50 if test "$enable_static_tor" = "yes"; then
51 enable_static_libevent="yes";
52 enable_static_openssl="yes";
53 enable_static_zlib="yes";
54 CFLAGS="$CFLAGS -static"
57 if test "$enable_system_torrc" = "no"; then
58 AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
59 [Defined if we're not going to look for a torrc in SYSCONF])
62 AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
63 if test x$enable_instrument_downloads = xyes; then
64 AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
65 [Defined if we want to keep track of how much of each kind of resource we download.])
68 AC_ARG_ENABLE(transparent,
69 AS_HELP_STRING(--disable-transparent, [disable transparent proxy support]),
70 [case "${enableval}" in
71 yes) transparent=true ;;
72 no) transparent=false ;;
73 *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
74 esac], [transparent=true])
76 AC_ARG_ENABLE(asciidoc,
77 AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
78 [case "${enableval}" in
81 *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
82 esac], [asciidoc=true])
84 # systemd notify support
85 AC_ARG_ENABLE(systemd,
86 AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
87 [case "${enableval}" in
90 * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
91 esac], [systemd=auto])
96 if test x$enable_systemd = xno ; then
99 PKG_CHECK_MODULES(SYSTEMD,
103 if test x$have_systemd=xno; then
104 AC_MSG_NOTICE([Okay, checking for systemd a different way...])
105 PKG_CHECK_MODULES(SYSTEMD,
112 if test x$have_systemd = xyes; then
113 AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
114 TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
115 TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
116 PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
117 [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
119 AC_SUBST(TOR_SYSTEMD_CFLAGS)
120 AC_SUBST(TOR_SYSTEMD_LIBS)
122 if test x$enable_systemd = xyes -a x$have_systemd != xyes ; then
123 AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
128 AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
132 AC_ARG_ENABLE(gcc-warnings,
133 AS_HELP_STRING(--enable-gcc-warnings, [enable verbose warnings]))
134 AC_ARG_ENABLE(gcc-warnings-advisory,
135 AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
137 dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
138 AC_ARG_ENABLE(gcc-hardening,
139 AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
141 AC_ARG_ENABLE(expensive-hardening,
142 AS_HELP_STRING(--enable-expensive-hardening, [enable more expensive compiler hardening; makes Tor slower]))
144 dnl Linker hardening options
145 dnl Currently these options are ELF specific - you can't use this with MacOSX
146 AC_ARG_ENABLE(linker-hardening,
147 AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
149 AC_ARG_ENABLE(local-appdata,
150 AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
151 if test "$enable_local_appdata" = "yes"; then
152 AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
153 [Defined if we default to host local appdata paths on Windows])
157 AC_ARG_ENABLE(tor2web-mode,
158 AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
159 [if test x$enableval = xyes; then
160 CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
163 AC_ARG_ENABLE(bufferevents,
164 AS_HELP_STRING(--enable-bufferevents, [use Libevent's buffered IO]))
166 AC_ARG_ENABLE(tool-name-check,
167 AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
169 AC_ARG_ENABLE(seccomp,
170 AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
172 AC_ARG_ENABLE(libscrypt,
173 AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
175 dnl check for the correct "ar" when cross-compiling
176 AN_MAKEVAR([AR], [AC_PROG_AR])
177 AN_PROGRAM([ar], [AC_PROG_AR])
178 AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
181 dnl Check whether the above macro has settled for a simply named tool even
182 dnl though we're cross compiling. We must do this before running AC_PROG_CC,
183 dnl because that will find any cc on the system, not only the cross-compiler,
184 dnl and then verify that a binary built with this compiler runs on the
185 dnl build system. It will then come to the false conclusion that we're not
187 if test x$enable_tool_name_check != xno; then
188 if test x$ac_tool_warned = xyes; then
189 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.)])
190 elif test "x$ac_ct_AR" != x -a x$cross_compiling = xmaybe; then
191 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.)])
200 AC_PATH_PROG([PERL], [perl])
202 dnl autoconf 2.59 appears not to support AC_PROG_SED
203 AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
205 dnl check for asciidoc and a2x
206 AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
207 AC_PATH_PROGS([A2X], [a2x a2x.py], none)
209 AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
211 AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
212 AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
213 AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
217 AC_ARG_VAR([PYTHON], [path to Python binary])
218 AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
219 if test "x$PYTHON" = "x"; then
220 AC_MSG_WARN([Python unavailable; some tests will not be run.])
222 AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
224 ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
225 AC_C_FLEXIBLE_ARRAY_MEMBER
227 dnl Maybe we've got an old autoconf...
228 AC_CACHE_CHECK([for flexible array members],
232 struct abc { int a; char b[]; };
234 struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
237 [tor_cv_c_flexarray=yes],
238 [tor_cv_c_flexarray=no])])
239 if test $tor_cv_flexarray = yes ; then
240 AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
242 AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
246 AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
249 [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
250 [tor_cv_c_c99_decl=yes],
251 [tor_cv_c_c99_decl=no] )])
252 if test "$tor_cv_c_c99_decl" != "yes"; then
253 AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
256 AC_CACHE_CHECK([for working C99 designated initializers],
257 tor_cv_c_c99_designated_init,
259 [AC_LANG_PROGRAM([struct s { int a; int b; };],
260 [[ struct s ss = { .b = 5, .a = 6 }; ]])],
261 [tor_cv_c_c99_designated_init=yes],
262 [tor_cv_c_c99_designated_init=no] )])
264 if test "$tor_cv_c_c99_designated_init" != "yes"; then
265 AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
269 AC_ARG_WITH(tor-user,
270 AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
278 AC_ARG_WITH(tor-group,
279 AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
287 dnl If _WIN32 is defined and non-zero, we are building for win32
288 AC_MSG_CHECKING([for win32])
289 AC_RUN_IFELSE([AC_LANG_SOURCE([
290 int main(int c, char **v) {
301 bwin32=true; AC_MSG_RESULT([yes]),
302 bwin32=false; AC_MSG_RESULT([no]),
303 bwin32=cross; AC_MSG_RESULT([cross])
306 if test "$bwin32" = cross; then
307 AC_MSG_CHECKING([for win32 (cross)])
308 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
310 int main(int c, char **v) {return 0;}
313 int main(int c, char **v) {return x(y);}
316 bwin32=true; AC_MSG_RESULT([yes]),
317 bwin32=false; AC_MSG_RESULT([no]))
322 /* Defined to access windows functions and definitions for >=WinXP */
324 # define WINVER 0x0501
327 /* Defined to access _other_ windows functions and definitions for >=WinXP */
328 # ifndef _WIN32_WINNT
329 # define _WIN32_WINNT 0x0501
332 /* Defined to avoid including some windows headers as part of Windows.h */
333 # ifndef WIN32_LEAN_AND_MEAN
334 # define WIN32_LEAN_AND_MEAN 1
340 AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
342 dnl Enable C99 when compiling with MIPSpro
343 AC_MSG_CHECKING([for MIPSpro compiler])
344 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
345 #if (defined(__sgi) && defined(_COMPILER_VERSION))
350 bmipspro=false; AC_MSG_RESULT(no),
351 bmipspro=true; AC_MSG_RESULT(yes))
353 if test "$bmipspro" = true; then
354 CFLAGS="$CFLAGS -c99"
359 AC_SEARCH_LIBS(socket, [socket network])
360 AC_SEARCH_LIBS(gethostbyname, [nsl])
361 AC_SEARCH_LIBS(dlopen, [dl])
362 AC_SEARCH_LIBS(inet_aton, [resolv])
363 AC_SEARCH_LIBS(backtrace, [execinfo])
365 AC_SEARCH_LIBS([clock_gettime], [rt])
366 if test "$LIBS" != "$saved_LIBS"; then
367 # Looks like we need -lrt for clock_gettime().
371 AC_SEARCH_LIBS(pthread_create, [pthread])
372 AC_SEARCH_LIBS(pthread_detach, [pthread])
374 AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
375 AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
381 backtrace_symbols_fd \
422 if test "$bwin32" != true; then
423 AC_CHECK_HEADERS(pthread.h)
424 AC_CHECK_FUNCS(pthread_create)
427 if test "$bwin32" = true; then
428 AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
435 AM_CONDITIONAL(BUILD_READPASSPHRASE_C, test x$ac_cv_func_readpassphrase = xno && test $bwin32 = false)
437 dnl ------------------------------------------------------
438 dnl Where do you live, libevent? And how do we call you?
440 if test "$bwin32" = true; then
441 TOR_LIB_WS32=-lws2_32
442 TOR_LIB_IPHLPAPI=-liphlpapi
443 # Some of the cargo-cults recommend -lwsock32 as well, but I don't
444 # think it's actually necessary.
450 AC_SUBST(TOR_LIB_WS32)
451 AC_SUBST(TOR_LIB_GDI)
452 AC_SUBST(TOR_LIB_IPHLPAPI)
454 tor_libevent_pkg_redhat="libevent"
455 tor_libevent_pkg_debian="libevent-dev"
456 tor_libevent_devpkg_redhat="libevent-devel"
457 tor_libevent_devpkg_debian="libevent-dev"
459 dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
460 dnl linking for static builds.
461 STATIC_LIBEVENT_FLAGS=""
462 if test "$enable_static_libevent" = "yes"; then
463 if test "$have_rt" = yes; then
464 STATIC_LIBEVENT_FLAGS=" -lrt "
468 TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
470 #include <winsock2.h>
473 #include <sys/time.h>
474 #include <sys/types.h>
475 #include <event.h>], [
477 #include <winsock2.h>
479 void exit(int); void *event_init(void);],
482 {WSADATA d; WSAStartup(0x101,&d); }
484 event_init(); exit(0);
485 ], [--with-libevent-dir], [/opt/libevent])
487 dnl Now check for particular libevent functions.
489 save_LDFLAGS="$LDFLAGS"
490 save_CPPFLAGS="$CPPFLAGS"
491 LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
492 LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
493 CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
494 AC_CHECK_FUNCS([event_get_version_number \
495 evutil_secure_rng_set_urandom_device_file \
496 evutil_secure_rng_init \
498 AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
502 AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
504 LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
506 AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
508 if test "$enable_static_libevent" = "yes"; then
509 if test "$tor_cv_library_libevent_dir" = "(system)"; then
510 AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
512 TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
515 if test "x$ac_cv_header_event2_event_h" = "xyes"; then
516 AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
517 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"))
519 if test "$ac_cv_search_event_new" != "none required"; then
520 TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
522 if test "$ac_cv_search_evdns_base_new" != "none required"; then
523 TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
526 TOR_LIBEVENT_LIBS="-levent"
531 LDFLAGS="$save_LDFLAGS"
532 CPPFLAGS="$save_CPPFLAGS"
534 dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
535 dnl we can do much better.
536 if test "$enable_bufferevents" = "yes" ; then
537 if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
538 AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
541 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
543 # Check for the right version. First see if version detection works.
544 AC_MSG_CHECKING([whether we can detect the Libevent version])
545 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
546 #include <event2/event.h>
547 #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
553 ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
554 [event_version_number_works=no; AC_MSG_RESULT([no])])
555 if test "$event_version_number_works" != 'yes'; then
556 AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
558 AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
559 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
560 #include <event2/event.h>
561 #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
567 ])], [ AC_MSG_RESULT([yes]) ],
568 [ AC_MSG_RESULT([no])
569 AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
575 LDFLAGS="$save_LDFLAGS"
576 CPPFLAGS="$save_CPPFLAGS"
578 AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
579 if test "$enable_bufferevents" = "yes"; then
580 AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
581 if test "$enable_static_libevent" = "yes"; then
582 TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
584 TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
587 AC_SUBST(TOR_LIBEVENT_LIBS)
589 dnl ------------------------------------------------------
590 dnl Where do you live, libm?
592 dnl On some platforms (Haiku/BeOS) the math library is
593 dnl part of libroot. In which case don't link against lm
596 AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
597 if test "$ac_cv_search_pow" != "none required"; then
598 TOR_LIB_MATH="$ac_cv_search_pow"
601 AC_SUBST(TOR_LIB_MATH)
603 dnl ------------------------------------------------------
604 dnl Where do you live, openssl? And how do we call you?
606 tor_openssl_pkg_redhat="openssl"
607 tor_openssl_pkg_debian="libssl-dev"
608 tor_openssl_devpkg_redhat="openssl-devel"
609 tor_openssl_devpkg_debian="libssl-dev"
611 ALT_openssl_WITHVAL=""
613 AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
615 if test "x$withval" != xno && test "x$withval" != "x" ; then
616 ALT_openssl_WITHVAL="$withval"
620 TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
621 [#include <openssl/rand.h>],
622 [void RAND_add(const void *buf, int num, double entropy);],
623 [RAND_add((void*)0,0,0); exit(0);], [],
624 [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
626 dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
628 if test "$enable_static_openssl" = "yes"; then
629 if test "$tor_cv_library_openssl_dir" = "(system)"; then
630 AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
632 TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
635 TOR_OPENSSL_LIBS="-lssl -lcrypto"
637 AC_SUBST(TOR_OPENSSL_LIBS)
639 dnl Now check for particular openssl functions.
641 save_LDFLAGS="$LDFLAGS"
642 save_CPPFLAGS="$CPPFLAGS"
643 LIBS="$TOR_OPENSSL_LIBS $LIBS"
644 LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
645 CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
648 #include <openssl/opensslv.h>
649 #if OPENSSL_VERSION_NUMBER < 0x1000000fL
654 [ AC_ERROR([OpenSSL is too old. We require 1.0.0 or later. You can specify a path to a newer one with --with-openssl-dir.]) ])
657 #include <openssl/opensslv.h>
658 #include <openssl/evp.h>
659 #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
662 #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
663 #error "curves unavailable"
667 [ AC_ERROR([OpenSSL is built without full ECC support, including curves P256 and P224. You can specify a path to one with ECC support with --with-openssl-dir.]) ])
669 AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
670 [#include <openssl/ssl.h>
674 SSL_SESSION_get_master_key \
675 SSL_get_server_random \
676 SSL_get_client_ciphers \
677 SSL_get_client_random \
682 dnl Check if OpenSSL has scrypt implementation.
683 AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
686 LDFLAGS="$save_LDFLAGS"
687 CPPFLAGS="$save_CPPFLAGS"
689 dnl ------------------------------------------------------
690 dnl Where do you live, zlib? And how do we call you?
692 tor_zlib_pkg_redhat="zlib"
693 tor_zlib_pkg_debian="zlib1g"
694 tor_zlib_devpkg_redhat="zlib-devel"
695 tor_zlib_devpkg_debian="zlib1g-dev"
697 TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
699 [const char * zlibVersion(void);],
700 [zlibVersion(); exit(0);], [--with-zlib-dir],
703 if test "$enable_static_zlib" = "yes"; then
704 if test "$tor_cv_library_zlib_dir" = "(system)"; then
705 AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
706 using --enable-static-zlib")
708 TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
713 AC_SUBST(TOR_ZLIB_LIBS)
715 dnl ---------------------------------------------------------------------
716 dnl Now that we know about our major libraries, we can check for compiler
717 dnl and linker hardening options. We need to do this with the libraries known,
718 dnl since sometimes the linker will like an option but not be willing to
719 dnl use it with a build of a library.
721 all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
722 all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
724 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
725 #if !defined(__clang__)
727 #endif])], have_clang=yes, have_clang=no)
729 if test x$enable_gcc_hardening != xno; then
730 CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
731 if test x$have_clang = xyes; then
732 TOR_CHECK_CFLAGS(-Qunused-arguments)
734 TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
735 AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
736 AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
737 m4_ifdef([AS_VAR_IF],[
738 AS_VAR_IF(can_compile, [yes],
739 AS_VAR_IF(can_link, [yes],
741 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.)]))
743 AS_VAR_POPDEF([can_link])
744 AS_VAR_POPDEF([can_compile])
745 TOR_CHECK_CFLAGS(-Wstack-protector)
746 TOR_CHECK_CFLAGS(-fwrapv)
747 TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
748 if test "$bwin32" = "false"; then
749 TOR_CHECK_CFLAGS(-fPIE)
750 TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
754 if test x$enable_expensive_hardening = xyes ; then
755 TOR_CHECK_CFLAGS([-fsanitize=address])
756 TOR_CHECK_CFLAGS([-fsanitize=undefined])
757 TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
760 if test x$enable_linker_hardening != xno; then
761 TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
764 # For backtrace support
765 TOR_CHECK_LDFLAGS(-rdynamic)
767 dnl ------------------------------------------------------
768 dnl Now see if we have a -fomit-frame-pointer compiler option.
770 saved_CFLAGS="$CFLAGS"
771 TOR_CHECK_CFLAGS(-fomit-frame-pointer)
772 F_OMIT_FRAME_POINTER=''
773 if test "$saved_CFLAGS" != "$CFLAGS"; then
774 if test x$enable_expensive_hardening != xyes ; then
775 F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
778 CFLAGS="$saved_CFLAGS"
779 AC_SUBST(F_OMIT_FRAME_POINTER)
781 dnl ------------------------------------------------------
782 dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
783 dnl for us, as GCC 4.6 and later do at many optimization levels), then
784 dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
786 TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
788 dnl ============================================================
789 dnl Check for libseccomp
791 if test "x$enable_seccomp" != "xno"; then
792 AC_CHECK_HEADERS([seccomp.h])
793 AC_SEARCH_LIBS(seccomp_init, [seccomp])
796 dnl ============================================================
797 dnl Check for libscrypt
799 if test "x$enable_libscrypt" != "xno"; then
800 AC_CHECK_HEADERS([libscrypt.h])
801 AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
804 dnl ============================================================
805 dnl We need an implementation of curve25519.
807 dnl set these defaults.
808 build_curve25519_donna=no
809 build_curve25519_donna_c64=no
810 use_curve25519_donna=no
811 use_curve25519_nacl=no
814 dnl The best choice is using curve25519-donna-c64, but that requires
816 AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
817 tor_cv_can_use_curve25519_donna_c64,
819 [AC_LANG_PROGRAM([dnl
821 typedef unsigned uint128_t __attribute__((mode(TI)));
822 int func(uint64_t a, uint64_t b) {
823 uint128_t c = ((uint128_t)a) * b;
824 int ok = ((uint64_t)(c>>96)) == 522859 &&
825 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
826 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
827 (((uint64_t)(c))&0xffffffffL) == 0;
831 int ok = func( ((uint64_t)2000000000) * 1000000000,
832 ((uint64_t)1234567890) << 24);
835 [tor_cv_can_use_curve25519_donna_c64=yes],
836 [tor_cv_can_use_curve25519_donna_c64=no],
838 [AC_LANG_PROGRAM([dnl
840 typedef unsigned uint128_t __attribute__((mode(TI)));
841 int func(uint64_t a, uint64_t b) {
842 uint128_t c = ((uint128_t)a) * b;
843 int ok = ((uint64_t)(c>>96)) == 522859 &&
844 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
845 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
846 (((uint64_t)(c))&0xffffffffL) == 0;
850 int ok = func( ((uint64_t)2000000000) * 1000000000,
851 ((uint64_t)1234567890) << 24);
854 [tor_cv_can_use_curve25519_donna_c64=cross],
855 [tor_cv_can_use_curve25519_donna_c64=no])])])
857 AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
858 nacl/crypto_scalarmult_curve25519.h])
860 AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
861 tor_cv_can_use_curve25519_nacl,
862 [tor_saved_LIBS="$LIBS"
865 [AC_LANG_PROGRAM([dnl
866 #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
867 #include <crypto_scalarmult_curve25519.h>
868 #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
869 #include <nacl/crypto_scalarmult_curve25519.h>
871 #ifdef crypto_scalarmult_curve25519_ref_BYTES
872 #error Hey, this is the reference implementation! That's not fast.
875 unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
876 ])], [tor_cv_can_use_curve25519_nacl=yes],
877 [tor_cv_can_use_curve25519_nacl=no])
878 LIBS="$tor_saved_LIBS" ])
880 dnl Okay, now we need to figure out which one to actually use. Fall back
881 dnl to curve25519-donna.c
883 if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
884 build_curve25519_donna_c64=yes
885 use_curve25519_donna=yes
886 elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
887 use_curve25519_nacl=yes
888 CURVE25519_LIBS=-lnacl
890 build_curve25519_donna=yes
891 use_curve25519_donna=yes
894 if test x$use_curve25519_donna = xyes; then
895 AC_DEFINE(USE_CURVE25519_DONNA, 1,
896 [Defined if we should use an internal curve25519_donna{,_c64} implementation])
898 if test x$use_curve25519_nacl = xyes; then
899 AC_DEFINE(USE_CURVE25519_NACL, 1,
900 [Defined if we should use a curve25519 from nacl])
902 AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
903 AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
904 AC_SUBST(CURVE25519_LIBS)
906 dnl Make sure to enable support for large off_t if available.
921 , , 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.))
923 dnl These headers are not essential
967 AC_CHECK_HEADERS(sys/param.h)
969 AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
970 [#ifdef HAVE_SYS_TYPES_H
971 #include <sys/types.h>
973 #ifdef HAVE_SYS_SOCKET_H
974 #include <sys/socket.h>
976 AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
977 [#ifdef HAVE_SYS_TYPES_H
978 #include <sys/types.h>
980 #ifdef HAVE_SYS_SOCKET_H
981 #include <sys/socket.h>
986 #ifdef HAVE_NETINET_IN_H
987 #include <netinet/in.h>
990 AC_CHECK_HEADERS(linux/if.h,[],[],
992 #ifdef HAVE_SYS_SOCKET_H
993 #include <sys/socket.h>
997 AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
998 linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
999 [#ifdef HAVE_SYS_TYPES_H
1000 #include <sys/types.h>
1002 #ifdef HAVE_SYS_SOCKET_H
1003 #include <sys/socket.h>
1005 #ifdef HAVE_LIMITS_H
1008 #ifdef HAVE_LINUX_TYPES_H
1009 #include <linux/types.h>
1011 #ifdef HAVE_NETINET_IN6_H
1012 #include <netinet/in6.h>
1014 #ifdef HAVE_NETINET_IN_H
1015 #include <netinet/in.h>
1018 AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
1019 linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
1020 [#ifdef HAVE_SYS_TYPES_H
1021 #include <sys/types.h>
1023 #ifdef HAVE_SYS_SOCKET_H
1024 #include <sys/socket.h>
1026 #ifdef HAVE_LIMITS_H
1029 #ifdef HAVE_LINUX_TYPES_H
1030 #include <linux/types.h>
1032 #ifdef HAVE_NETINET_IN6_H
1033 #include <netinet/in6.h>
1035 #ifdef HAVE_NETINET_IN_H
1036 #include <netinet/in.h>
1038 #ifdef HAVE_LINUX_IF_H
1039 #include <linux/if.h>
1042 if test x$transparent = xtrue ; then
1044 if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
1047 if test x$linux_netfilter_ipv4 = x1 ; then
1050 if test x$linux_netfilter_ipv6_ip6_tables = x1 ; then
1053 if test x$transparent_ok = x1 ; then
1054 AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
1056 *-*-openbsd* | *-*-bitrig*)
1057 AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
1060 AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
1064 AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
1065 [#ifdef HAVE_SYS_TYPES_H
1066 #include <sys/types.h>
1068 #ifdef HAVE_SYS_TIME_H
1069 #include <sys/time.h>
1072 dnl In case we aren't given a working stdint.h, we'll need to grow our own.
1075 AC_CHECK_SIZEOF(int8_t)
1076 AC_CHECK_SIZEOF(int16_t)
1077 AC_CHECK_SIZEOF(int32_t)
1078 AC_CHECK_SIZEOF(int64_t)
1079 AC_CHECK_SIZEOF(uint8_t)
1080 AC_CHECK_SIZEOF(uint16_t)
1081 AC_CHECK_SIZEOF(uint32_t)
1082 AC_CHECK_SIZEOF(uint64_t)
1083 AC_CHECK_SIZEOF(intptr_t)
1084 AC_CHECK_SIZEOF(uintptr_t)
1086 dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
1088 AC_CHECK_SIZEOF(char)
1089 AC_CHECK_SIZEOF(short)
1090 AC_CHECK_SIZEOF(int)
1091 AC_CHECK_SIZEOF(long)
1092 AC_CHECK_SIZEOF(long long)
1093 AC_CHECK_SIZEOF(__int64)
1094 AC_CHECK_SIZEOF(void *)
1095 AC_CHECK_SIZEOF(time_t)
1096 AC_CHECK_SIZEOF(size_t)
1097 AC_CHECK_SIZEOF(pid_t)
1099 AC_CHECK_TYPES([uint, u_char, ssize_t])
1101 AC_PC_FROM_UCONTEXT([:])
1103 dnl used to include sockaddr_storage, but everybody has that.
1104 AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
1105 [#ifdef HAVE_SYS_TYPES_H
1106 #include <sys/types.h>
1108 #ifdef HAVE_NETINET_IN_H
1109 #include <netinet/in.h>
1111 #ifdef HAVE_NETINET_IN6_H
1112 #include <netinet/in6.h>
1114 #ifdef HAVE_SYS_SOCKET_H
1115 #include <sys/socket.h>
1118 #define _WIN32_WINNT 0x0501
1119 #define WIN32_LEAN_AND_MEAN
1120 #include <winsock2.h>
1121 #include <ws2tcpip.h>
1124 AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
1125 [#ifdef HAVE_SYS_TYPES_H
1126 #include <sys/types.h>
1128 #ifdef HAVE_NETINET_IN_H
1129 #include <netinet/in.h>
1131 #ifdef HAVE_NETINET_IN6_H
1132 #include <netinet/in6.h>
1134 #ifdef HAVE_SYS_SOCKET_H
1135 #include <sys/socket.h>
1138 #define _WIN32_WINNT 0x0501
1139 #define WIN32_LEAN_AND_MEAN
1140 #include <winsock2.h>
1141 #include <ws2tcpip.h>
1146 AC_CHECK_TYPES([rlim_t], , ,
1147 [#ifdef HAVE_SYS_TYPES_H
1148 #include <sys/types.h>
1150 #ifdef HAVE_SYS_TIME_H
1151 #include <sys/time.h>
1153 #ifdef HAVE_SYS_RESOURCE_H
1154 #include <sys/resource.h>
1158 AX_CHECK_SIGN([time_t],
1159 [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
1161 #ifdef HAVE_SYS_TYPES_H
1162 #include <sys/types.h>
1164 #ifdef HAVE_SYS_TIME_H
1165 #include <sys/time.h>
1172 if test "$ax_cv_decl_time_t_signed" = no; then
1173 AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
1176 AX_CHECK_SIGN([size_t],
1177 [ tor_cv_size_t_signed=yes ],
1178 [ tor_cv_size_t_signed=no ], [
1179 #ifdef HAVE_SYS_TYPES_H
1180 #include <sys/types.h>
1184 if test "$ax_cv_decl_size_t_signed" = yes; then
1185 AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
1188 AX_CHECK_SIGN([enum always],
1189 [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
1191 enum always { AAA, BBB, CCC };
1194 AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
1195 #ifdef HAVE_SYS_SOCKET_H
1196 #include <sys/socket.h>
1200 # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
1202 AC_CHECK_SIZEOF(cell_t)
1204 # Now make sure that NULL can be represented as zero bytes.
1205 AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
1206 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1207 [[#include <stdlib.h>
1210 #ifdef HAVE_STDDEF_H
1213 int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
1214 return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
1215 [tor_cv_null_is_zero=yes],
1216 [tor_cv_null_is_zero=no],
1217 [tor_cv_null_is_zero=cross])])
1219 if test "$tor_cv_null_is_zero" = cross ; then
1220 # Cross-compiling; let's hope that the target isn't raving mad.
1221 AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
1224 if test "$tor_cv_null_is_zero" != no; then
1225 AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
1226 [Define to 1 iff memset(0) sets pointers to NULL])
1229 AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
1230 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1231 [[#include <stdlib.h>
1234 #ifdef HAVE_STDDEF_H
1237 int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
1238 return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
1239 [tor_cv_dbl0_is_zero=yes],
1240 [tor_cv_dbl0_is_zero=no],
1241 [tor_cv_dbl0_is_zero=cross])])
1243 if test "$tor_cv_dbl0_is_zero" = cross ; then
1244 # Cross-compiling; let's hope that the target isn't raving mad.
1245 AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
1248 if test "$tor_cv_dbl0_is_zero" != no; then
1249 AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
1250 [Define to 1 iff memset(0) sets doubles to 0.0])
1253 # And what happens when we malloc zero?
1254 AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
1255 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1256 [[#include <stdlib.h>
1259 #ifdef HAVE_STDDEF_H
1262 int main () { return malloc(0)?0:1; }]])],
1263 [tor_cv_malloc_zero_works=yes],
1264 [tor_cv_malloc_zero_works=no],
1265 [tor_cv_malloc_zero_works=cross])])
1267 if test "$tor_cv_malloc_zero_works" = cross; then
1268 # Cross-compiling; let's hope that the target isn't raving mad.
1269 AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
1272 if test "$tor_cv_malloc_zero_works" = yes; then
1273 AC_DEFINE([MALLOC_ZERO_WORKS], 1,
1274 [Define to 1 iff malloc(0) returns a pointer])
1277 # whether we seem to be in a 2s-complement world.
1278 AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
1279 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1280 [[int main () { int problem = ((-99) != (~99)+1);
1281 return problem ? 1 : 0; }]])],
1282 [tor_cv_twos_complement=yes],
1283 [tor_cv_twos_complement=no],
1284 [tor_cv_twos_complement=cross])])
1286 if test "$tor_cv_twos_complement" = cross ; then
1287 # Cross-compiling; let's hope that the target isn't raving mad.
1288 AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
1291 if test "$tor_cv_twos_complement" != no ; then
1292 AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
1293 [Define to 1 iff we represent negative integers with two's complement])
1296 # What does shifting a negative value do?
1297 AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
1298 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1299 [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
1300 [tor_cv_sign_extend=yes],
1301 [tor_cv_sign_extend=no],
1302 [tor_cv_sign_extend=cross])])
1304 if test "$tor_cv_sign_extend" = cross ; then
1305 # Cross-compiling; let's hope that the target isn't raving mad.
1306 AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
1309 if test "$tor_cv_sign_extend" != no ; then
1310 AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
1311 [Define to 1 iff right-shifting a negative value performs sign-extension])
1314 # Whether we should use the dmalloc memory allocation debugging library.
1315 AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
1316 AC_ARG_WITH(dmalloc,
1317 AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
1318 [if [[ "$withval" = "yes" ]]; then
1324 fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
1327 if [[ $dmalloc -eq 1 ]]; then
1328 AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
1329 AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
1330 AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
1331 AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
1334 AC_ARG_WITH(tcmalloc,
1335 AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
1336 [ tcmalloc=yes ], [ tcmalloc=no ])
1338 if test x$tcmalloc = xyes ; then
1339 LDFLAGS="-ltcmalloc $LDFLAGS"
1342 using_custom_malloc=no
1343 if test x$enable_openbsd_malloc = xyes ; then
1344 using_custom_malloc=yes
1346 if test x$tcmalloc = xyes ; then
1347 using_custom_malloc=yes
1349 if test $using_custom_malloc = no ; then
1350 AC_CHECK_FUNCS(mallinfo)
1353 # By default, we're going to assume we don't have mlockall()
1354 # bionic and other platforms have various broken mlockall subsystems.
1355 # Some systems don't have a working mlockall, some aren't linkable,
1356 # and some have it but don't declare it.
1357 AC_CHECK_FUNCS(mlockall)
1358 AC_CHECK_DECLS([mlockall], , , [
1359 #ifdef HAVE_SYS_MMAN_H
1360 #include <sys/mman.h>
1363 # Allow user to specify an alternate syslog facility
1364 AC_ARG_WITH(syslog-facility,
1365 AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
1366 syslog_facility="$withval", syslog_facility="LOG_DAEMON")
1367 AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
1368 AC_SUBST(LOGFACILITY)
1370 # Check if we have getresuid and getresgid
1371 AC_CHECK_FUNCS(getresuid getresgid)
1373 # Check for gethostbyname_r in all its glorious incompatible versions.
1374 # (This logic is based on that in Python's configure.in)
1375 AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
1376 [Define this if you have any gethostbyname_r()])
1378 AC_CHECK_FUNC(gethostbyname_r, [
1379 AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
1381 CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
1382 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
1386 struct hostent *h1, *h2;
1388 (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
1390 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1391 AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
1392 [Define this if gethostbyname_r takes 6 arguments])
1401 (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
1403 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1404 AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
1405 [Define this if gethostbyname_r takes 5 arguments])
1413 struct hostent_data hd;
1414 (void) gethostbyname_r(cp1,h1,&hd);
1416 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1417 AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
1418 [Define this if gethostbyname_r takes 3 arguments])
1428 AC_CACHE_CHECK([whether the C compiler supports __func__],
1429 tor_cv_have_func_macro,
1430 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1432 int main(int c, char **v) { puts(__func__); }])],
1433 tor_cv_have_func_macro=yes,
1434 tor_cv_have_func_macro=no))
1436 AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
1437 tor_cv_have_FUNC_macro,
1438 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1440 int main(int c, char **v) { puts(__FUNC__); }])],
1441 tor_cv_have_FUNC_macro=yes,
1442 tor_cv_have_FUNC_macro=no))
1444 AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
1445 tor_cv_have_FUNCTION_macro,
1446 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1448 int main(int c, char **v) { puts(__FUNCTION__); }])],
1449 tor_cv_have_FUNCTION_macro=yes,
1450 tor_cv_have_FUNCTION_macro=no))
1452 AC_CACHE_CHECK([whether we have extern char **environ already declared],
1453 tor_cv_have_environ_declared,
1454 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1455 /* We define _GNU_SOURCE here because it is also defined in compat.c.
1456 * Without it environ doesn't get declared. */
1458 #ifdef HAVE_UNISTD_H
1462 int main(int c, char **v) { char **t = environ; }])],
1463 tor_cv_have_environ_declared=yes,
1464 tor_cv_have_environ_declared=no))
1466 if test "$tor_cv_have_func_macro" = 'yes'; then
1467 AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
1470 if test "$tor_cv_have_FUNC_macro" = 'yes'; then
1471 AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
1474 if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
1475 AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
1476 [Defined if the compiler supports __FUNCTION__])
1479 if test "$tor_cv_have_environ_declared" = 'yes'; then
1480 AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
1481 [Defined if we have extern char **environ already declared])
1484 # $prefix stores the value of the --prefix command line option, or
1485 # NONE if the option wasn't set. In the case that it wasn't set, make
1486 # it be the default, so that we can use it to expand directories now.
1487 if test "x$prefix" = "xNONE"; then
1488 prefix=$ac_default_prefix
1491 # and similarly for $exec_prefix
1492 if test "x$exec_prefix" = "xNONE"; then
1496 if test "x$BUILDDIR" = "x"; then
1500 AH_TEMPLATE([BUILDDIR],[tor's build directory])
1501 AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
1503 if test "x$CONFDIR" = "x"; then
1504 CONFDIR=`eval echo $sysconfdir/tor`
1507 AH_TEMPLATE([CONFDIR],[tor's configuration directory])
1508 AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
1510 BINDIR=`eval echo $bindir`
1512 LOCALSTATEDIR=`eval echo $localstatedir`
1513 AC_SUBST(LOCALSTATEDIR)
1515 if test "$bwin32" = true; then
1516 # Test if the linker supports the --nxcompat and --dynamicbase options
1518 save_LDFLAGS="$LDFLAGS"
1519 LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
1520 AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
1521 AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
1522 [AC_MSG_RESULT([yes])]
1523 [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
1524 [AC_MSG_RESULT([no])]
1526 LDFLAGS="$save_LDFLAGS"
1529 # Set CFLAGS _after_ all the above checks, since our warnings are stricter
1530 # than autoconf's macros like.
1531 if test "$GCC" = yes; then
1532 # Disable GCC's strict aliasing checks. They are an hours-to-debug
1533 # accident waiting to happen.
1534 CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
1536 # Override optimization level for non-gcc compilers
1538 enable_gcc_warnings=no
1539 enable_gcc_warnings_advisory=no
1542 # OS X Lion started deprecating the system openssl. Let's just disable
1543 # all deprecation warnings on OS X. Also, to potentially make the binary
1544 # a little smaller, let's enable dead_strip.
1548 CFLAGS="$CFLAGS -Wno-deprecated-declarations"
1549 LDFLAGS="$LDFLAGS -dead_strip" ;;
1552 # Add some more warnings which we use in development but not in the
1553 # released versions. (Some relevant gcc versions can't handle these.)
1554 if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
1556 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1557 #if !defined(__GNUC__) || (__GNUC__ < 4)
1559 #endif])], have_gcc4=yes, have_gcc4=no)
1561 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1562 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
1564 #endif])], have_gcc42=yes, have_gcc42=no)
1566 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1567 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
1569 #endif])], have_gcc43=yes, have_gcc43=no)
1571 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1572 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
1574 #endif])], have_gcc46=yes, have_gcc46=no)
1577 save_CFLAGS="$CFLAGS"
1578 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1579 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
1580 have_shorten64_flag=no)
1581 CFLAGS="$save_CFLAGS"
1584 *-*-openbsd* | *-*-bitrig*)
1585 # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
1586 # That's fine, except that the headers don't pass -Wredundant-decls.
1587 # Therefore, let's disable -Wsystem-headers when we're building
1588 # with maximal warnings on OpenBSD.
1589 CFLAGS="$CFLAGS -Wno-system-headers" ;;
1592 CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
1593 CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
1594 CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
1595 CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
1596 CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
1598 if test x$enable_gcc_warnings = xyes; then
1599 CFLAGS="$CFLAGS -Werror"
1602 # Disabled, so we can use mallinfo(): -Waggregate-return
1604 if test x$have_gcc4 = xyes ; then
1605 # These warnings break gcc 3.3.5 and work on gcc 4.0.2
1606 CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wold-style-definition"
1609 if test x$have_gcc42 = xyes ; then
1610 # These warnings break gcc 4.0.2 and work on gcc 4.2
1611 # XXXX020 See if any of these work with earlier versions.
1612 CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
1614 # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
1617 if test x$have_gcc42 = xyes && test x$have_clang = xno; then
1618 # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
1619 CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
1622 if test x$have_gcc43 = xyes ; then
1623 # These warnings break gcc 4.2 and work on gcc 4.3
1624 # XXXX020 See if any of these work with earlier versions.
1625 CFLAGS="$CFLAGS -Wextra -Warray-bounds"
1628 if test x$have_gcc46 = xyes ; then
1629 # This warning was added in gcc 4.3, but it appears to generate
1630 # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
1631 CFLAGS="$CFLAGS -Wlogical-op"
1634 if test x$have_shorten64_flag = xyes ; then
1635 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1640 ##This will break the world on some 64-bit architectures
1641 # CFLAGS="$CFLAGS -Winline"
1644 if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
1647 AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-profiling.])
1651 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
1656 contrib/dist/suse/tor.sh
1657 contrib/operator-tools/tor.logrotate
1660 contrib/dist/tor.service
1661 src/config/torrc.sample
1662 src/config/torrc.minimal
1663 scripts/maint/checkOptionDocs.pl
1664 scripts/maint/updateVersions.pl
1667 if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
1668 regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
1669 for file in $regular_mans ; do
1670 if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
1671 echo "==================================";
1673 echo "Building Tor has failed since manpages cannot be built.";
1675 echo "You need asciidoc installed to be able to build the manpages.";
1676 echo "To build without manpages, use the --disable-asciidoc argument";
1677 echo "when calling configure.";
1679 echo "==================================";