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],[0.2.7.3-rc])
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="$CFLAGS -c99"
359 AC_SEARCH_LIBS(socket, [socket network])
360 AC_SEARCH_LIBS(gethostbyname, [nsl])
361 AC_SEARCH_LIBS(dlopen, [dl])
362 AC_SEARCH_LIBS(inet_aton, [resolv])
364 AC_SEARCH_LIBS([clock_gettime], [rt])
365 if test "$LIBS" != "$saved_LIBS"; then
366 # Looks like we need -lrt for clock_gettime().
370 AC_SEARCH_LIBS(pthread_create, [pthread])
371 AC_SEARCH_LIBS(pthread_detach, [pthread])
373 AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
374 AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
376 dnl -------------------------------------------------------------------
377 dnl Check for functions before libevent, since libevent-1.2 apparently
378 dnl exports strlcpy without defining it in a header.
384 backtrace_symbols_fd \
424 if test "$bwin32" != true; then
425 AC_CHECK_HEADERS(pthread.h)
426 AC_CHECK_FUNCS(pthread_create)
429 if test "$bwin32" = true; then
430 AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
437 AM_CONDITIONAL(BUILD_READPASSPHRASE_C, test x$ac_cv_func_readpassphrase = xno && test $bwin32 = false)
439 dnl ------------------------------------------------------
440 dnl Where do you live, libevent? And how do we call you?
442 if test "$bwin32" = true; then
443 TOR_LIB_WS32=-lws2_32
444 TOR_LIB_IPHLPAPI=-liphlpapi
445 # Some of the cargo-cults recommend -lwsock32 as well, but I don't
446 # think it's actually necessary.
452 AC_SUBST(TOR_LIB_WS32)
453 AC_SUBST(TOR_LIB_GDI)
454 AC_SUBST(TOR_LIB_IPHLPAPI)
456 tor_libevent_pkg_redhat="libevent"
457 tor_libevent_pkg_debian="libevent-dev"
458 tor_libevent_devpkg_redhat="libevent-devel"
459 tor_libevent_devpkg_debian="libevent-dev"
461 dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
462 dnl linking for static builds.
463 STATIC_LIBEVENT_FLAGS=""
464 if test "$enable_static_libevent" = "yes"; then
465 if test "$have_rt" = yes; then
466 STATIC_LIBEVENT_FLAGS=" -lrt "
470 TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
472 #include <winsock2.h>
475 #include <sys/time.h>
476 #include <sys/types.h>
477 #include <event.h>], [
479 #include <winsock2.h>
481 void exit(int); void *event_init(void);],
484 {WSADATA d; WSAStartup(0x101,&d); }
486 event_init(); exit(0);
487 ], [--with-libevent-dir], [/opt/libevent])
489 dnl Now check for particular libevent functions.
491 save_LDFLAGS="$LDFLAGS"
492 save_CPPFLAGS="$CPPFLAGS"
493 LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
494 LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
495 CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
496 AC_CHECK_FUNCS([event_get_version_number \
497 evutil_secure_rng_set_urandom_device_file \
498 evutil_secure_rng_init \
500 AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
504 AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
507 LDFLAGS="$save_LDFLAGS"
508 CPPFLAGS="$save_CPPFLAGS"
511 AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
513 if test "$enable_static_libevent" = "yes"; then
514 if test "$tor_cv_library_libevent_dir" = "(system)"; then
515 AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
517 TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
520 TOR_LIBEVENT_LIBS="-levent"
523 dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
524 dnl we can do much better.
525 if test "$enable_bufferevents" = "yes" ; then
526 if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
527 AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
530 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
532 # Check for the right version. First see if version detection works.
533 AC_MSG_CHECKING([whether we can detect the Libevent version])
534 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
535 #include <event2/event.h>
536 #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
542 ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
543 [event_version_number_works=no; AC_MSG_RESULT([no])])
544 if test "$event_version_number_works" != 'yes'; then
545 AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
547 AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
548 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
549 #include <event2/event.h>
550 #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
556 ])], [ AC_MSG_RESULT([yes]) ],
557 [ AC_MSG_RESULT([no])
558 AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
564 LDFLAGS="$save_LDFLAGS"
565 CPPFLAGS="$save_CPPFLAGS"
567 AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
568 if test "$enable_bufferevents" = "yes"; then
569 AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
570 if test "$enable_static_libevent" = "yes"; then
571 TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
573 TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
576 AC_SUBST(TOR_LIBEVENT_LIBS)
578 dnl ------------------------------------------------------
579 dnl Where do you live, libm?
581 dnl On some platforms (Haiku/BeOS) the math library is
582 dnl part of libroot. In which case don't link against lm
585 AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
586 if test "$ac_cv_search_pow" != "none required"; then
587 TOR_LIB_MATH="$ac_cv_search_pow"
590 AC_SUBST(TOR_LIB_MATH)
592 dnl ------------------------------------------------------
593 dnl Where do you live, openssl? And how do we call you?
595 tor_openssl_pkg_redhat="openssl"
596 tor_openssl_pkg_debian="libssl-dev"
597 tor_openssl_devpkg_redhat="openssl-devel"
598 tor_openssl_devpkg_debian="libssl-dev"
600 ALT_openssl_WITHVAL=""
602 AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
604 if test "x$withval" != xno && test "x$withval" != "x" ; then
605 ALT_openssl_WITHVAL="$withval"
609 TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
610 [#include <openssl/rand.h>],
611 [void RAND_add(const void *buf, int num, double entropy);],
612 [RAND_add((void*)0,0,0); exit(0);], [],
613 [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
615 dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
617 if test "$enable_static_openssl" = "yes"; then
618 if test "$tor_cv_library_openssl_dir" = "(system)"; then
619 AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
621 TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
624 TOR_OPENSSL_LIBS="-lssl -lcrypto"
626 AC_SUBST(TOR_OPENSSL_LIBS)
628 dnl Now check for particular openssl functions.
630 save_LDFLAGS="$LDFLAGS"
631 save_CPPFLAGS="$CPPFLAGS"
632 LIBS="$TOR_OPENSSL_LIBS $LIBS"
633 LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
634 CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
637 #include <openssl/opensslv.h>
638 #if OPENSSL_VERSION_NUMBER < 0x1000000fL
643 [ AC_ERROR([OpenSSL is too old. We require 1.0.0 or later. You can specify a path to a newer one with --with-openssl-dir.]) ])
646 #include <openssl/opensslv.h>
647 #include <openssl/evp.h>
648 #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
651 #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
652 #error "curves unavailable"
656 [ AC_ERROR([OpenSSL is built without full ECC support, including curves P256 and P224. You can specify a path to one with ECC support with --with-openssl-dir.]) ])
658 AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
659 [#include <openssl/ssl.h>
663 SSL_SESSION_get_master_key \
664 SSL_get_server_random \
665 SSL_get_client_ciphers \
666 SSL_get_client_random \
671 dnl Check if OpenSSL has scrypt implementation.
672 AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
675 LDFLAGS="$save_LDFLAGS"
676 CPPFLAGS="$save_CPPFLAGS"
678 dnl ------------------------------------------------------
679 dnl Where do you live, zlib? And how do we call you?
681 tor_zlib_pkg_redhat="zlib"
682 tor_zlib_pkg_debian="zlib1g"
683 tor_zlib_devpkg_redhat="zlib-devel"
684 tor_zlib_devpkg_debian="zlib1g-dev"
686 TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
688 [const char * zlibVersion(void);],
689 [zlibVersion(); exit(0);], [--with-zlib-dir],
692 if test "$enable_static_zlib" = "yes"; then
693 if test "$tor_cv_library_zlib_dir" = "(system)"; then
694 AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
695 using --enable-static-zlib")
697 TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
702 AC_SUBST(TOR_ZLIB_LIBS)
704 dnl ---------------------------------------------------------------------
705 dnl Now that we know about our major libraries, we can check for compiler
706 dnl and linker hardening options. We need to do this with the libraries known,
707 dnl since sometimes the linker will like an option but not be willing to
708 dnl use it with a build of a library.
710 all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
711 all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
713 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
714 #if !defined(__clang__)
716 #endif])], have_clang=yes, have_clang=no)
718 if test x$enable_gcc_hardening != xno; then
719 CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
720 if test x$have_clang = xyes; then
721 TOR_CHECK_CFLAGS(-Qunused-arguments)
723 TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
724 AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
725 AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
726 m4_ifdef([AS_VAR_IF],[
727 AS_VAR_IF(can_compile, [yes],
728 AS_VAR_IF(can_link, [yes],
730 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.)]))
732 AS_VAR_POPDEF([can_link])
733 AS_VAR_POPDEF([can_compile])
734 TOR_CHECK_CFLAGS(-Wstack-protector)
735 TOR_CHECK_CFLAGS(-fwrapv)
736 TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
737 if test "$bwin32" = "false"; then
738 TOR_CHECK_CFLAGS(-fPIE)
739 TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
743 if test x$enable_expensive_hardening = xyes ; then
744 TOR_CHECK_CFLAGS([-fsanitize=address])
745 TOR_CHECK_CFLAGS([-fsanitize=undefined])
746 TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
749 if test x$enable_linker_hardening != xno; then
750 TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
753 # For backtrace support
754 TOR_CHECK_LDFLAGS(-rdynamic)
756 dnl ------------------------------------------------------
757 dnl Now see if we have a -fomit-frame-pointer compiler option.
759 saved_CFLAGS="$CFLAGS"
760 TOR_CHECK_CFLAGS(-fomit-frame-pointer)
761 F_OMIT_FRAME_POINTER=''
762 if test "$saved_CFLAGS" != "$CFLAGS"; then
763 if test x$enable_expensive_hardening != xyes ; then
764 F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
767 CFLAGS="$saved_CFLAGS"
768 AC_SUBST(F_OMIT_FRAME_POINTER)
770 dnl ------------------------------------------------------
771 dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
772 dnl for us, as GCC 4.6 and later do at many optimization levels), then
773 dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
775 TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
777 dnl ============================================================
778 dnl Check for libseccomp
780 if test "x$enable_seccomp" != "xno"; then
781 AC_CHECK_HEADERS([seccomp.h])
782 AC_SEARCH_LIBS(seccomp_init, [seccomp])
785 dnl ============================================================
786 dnl Check for libscrypt
788 if test "x$enable_libscrypt" != "xno"; then
789 AC_CHECK_HEADERS([libscrypt.h])
790 AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
793 dnl ============================================================
794 dnl We need an implementation of curve25519.
796 dnl set these defaults.
797 build_curve25519_donna=no
798 build_curve25519_donna_c64=no
799 use_curve25519_donna=no
800 use_curve25519_nacl=no
803 dnl The best choice is using curve25519-donna-c64, but that requires
805 AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
806 tor_cv_can_use_curve25519_donna_c64,
808 [AC_LANG_PROGRAM([dnl
810 typedef unsigned uint128_t __attribute__((mode(TI)));
811 int func(uint64_t a, uint64_t b) {
812 uint128_t c = ((uint128_t)a) * b;
813 int ok = ((uint64_t)(c>>96)) == 522859 &&
814 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
815 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
816 (((uint64_t)(c))&0xffffffffL) == 0;
820 int ok = func( ((uint64_t)2000000000) * 1000000000,
821 ((uint64_t)1234567890) << 24);
824 [tor_cv_can_use_curve25519_donna_c64=yes],
825 [tor_cv_can_use_curve25519_donna_c64=no],
827 [AC_LANG_PROGRAM([dnl
829 typedef unsigned uint128_t __attribute__((mode(TI)));
830 int func(uint64_t a, uint64_t b) {
831 uint128_t c = ((uint128_t)a) * b;
832 int ok = ((uint64_t)(c>>96)) == 522859 &&
833 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
834 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
835 (((uint64_t)(c))&0xffffffffL) == 0;
839 int ok = func( ((uint64_t)2000000000) * 1000000000,
840 ((uint64_t)1234567890) << 24);
843 [tor_cv_can_use_curve25519_donna_c64=cross],
844 [tor_cv_can_use_curve25519_donna_c64=no])])])
846 AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
847 nacl/crypto_scalarmult_curve25519.h])
849 AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
850 tor_cv_can_use_curve25519_nacl,
851 [tor_saved_LIBS="$LIBS"
854 [AC_LANG_PROGRAM([dnl
855 #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
856 #include <crypto_scalarmult_curve25519.h>
857 #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
858 #include <nacl/crypto_scalarmult_curve25519.h>
860 #ifdef crypto_scalarmult_curve25519_ref_BYTES
861 #error Hey, this is the reference implementation! That's not fast.
864 unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
865 ])], [tor_cv_can_use_curve25519_nacl=yes],
866 [tor_cv_can_use_curve25519_nacl=no])
867 LIBS="$tor_saved_LIBS" ])
869 dnl Okay, now we need to figure out which one to actually use. Fall back
870 dnl to curve25519-donna.c
872 if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
873 build_curve25519_donna_c64=yes
874 use_curve25519_donna=yes
875 elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
876 use_curve25519_nacl=yes
877 CURVE25519_LIBS=-lnacl
879 build_curve25519_donna=yes
880 use_curve25519_donna=yes
883 if test x$use_curve25519_donna = xyes; then
884 AC_DEFINE(USE_CURVE25519_DONNA, 1,
885 [Defined if we should use an internal curve25519_donna{,_c64} implementation])
887 if test x$use_curve25519_nacl = xyes; then
888 AC_DEFINE(USE_CURVE25519_NACL, 1,
889 [Defined if we should use a curve25519 from nacl])
891 AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
892 AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
893 AC_SUBST(CURVE25519_LIBS)
895 dnl Make sure to enable support for large off_t if available.
910 , , 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.))
912 dnl These headers are not essential
955 AC_CHECK_HEADERS(sys/param.h)
957 AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
958 [#ifdef HAVE_SYS_TYPES_H
959 #include <sys/types.h>
961 #ifdef HAVE_SYS_SOCKET_H
962 #include <sys/socket.h>
964 AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
965 [#ifdef HAVE_SYS_TYPES_H
966 #include <sys/types.h>
968 #ifdef HAVE_SYS_SOCKET_H
969 #include <sys/socket.h>
975 AC_CHECK_HEADERS(linux/if.h,[],[],
977 #ifdef HAVE_SYS_SOCKET_H
978 #include <sys/socket.h>
982 AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
983 linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
984 [#ifdef HAVE_SYS_TYPES_H
985 #include <sys/types.h>
987 #ifdef HAVE_SYS_SOCKET_H
988 #include <sys/socket.h>
993 #ifdef HAVE_LINUX_TYPES_H
994 #include <linux/types.h>
996 #ifdef HAVE_NETINET_IN6_H
997 #include <netinet/in6.h>
999 #ifdef HAVE_NETINET_IN_H
1000 #include <netinet/in.h>
1003 AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
1004 linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
1005 [#ifdef HAVE_SYS_TYPES_H
1006 #include <sys/types.h>
1008 #ifdef HAVE_SYS_SOCKET_H
1009 #include <sys/socket.h>
1011 #ifdef HAVE_LIMITS_H
1014 #ifdef HAVE_LINUX_TYPES_H
1015 #include <linux/types.h>
1017 #ifdef HAVE_NETINET_IN6_H
1018 #include <netinet/in6.h>
1020 #ifdef HAVE_NETINET_IN_H
1021 #include <netinet/in.h>
1023 #ifdef HAVE_LINUX_IF_H
1024 #include <linux/if.h>
1027 if test x$transparent = xtrue ; then
1029 if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
1032 if test x$linux_netfilter_ipv4 = x1 ; then
1035 if test x$linux_netfilter_ipv6_ip6_tables = x1 ; then
1038 if test x$transparent_ok = x1 ; then
1039 AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
1041 *-*-openbsd* | *-*-bitrig*)
1042 AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
1045 AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
1049 AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
1050 [#ifdef HAVE_SYS_TYPES_H
1051 #include <sys/types.h>
1053 #ifdef HAVE_SYS_TIME_H
1054 #include <sys/time.h>
1057 dnl In case we aren't given a working stdint.h, we'll need to grow our own.
1060 AC_CHECK_SIZEOF(int8_t)
1061 AC_CHECK_SIZEOF(int16_t)
1062 AC_CHECK_SIZEOF(int32_t)
1063 AC_CHECK_SIZEOF(int64_t)
1064 AC_CHECK_SIZEOF(uint8_t)
1065 AC_CHECK_SIZEOF(uint16_t)
1066 AC_CHECK_SIZEOF(uint32_t)
1067 AC_CHECK_SIZEOF(uint64_t)
1068 AC_CHECK_SIZEOF(intptr_t)
1069 AC_CHECK_SIZEOF(uintptr_t)
1071 dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
1073 AC_CHECK_SIZEOF(char)
1074 AC_CHECK_SIZEOF(short)
1075 AC_CHECK_SIZEOF(int)
1076 AC_CHECK_SIZEOF(long)
1077 AC_CHECK_SIZEOF(long long)
1078 AC_CHECK_SIZEOF(__int64)
1079 AC_CHECK_SIZEOF(void *)
1080 AC_CHECK_SIZEOF(time_t)
1081 AC_CHECK_SIZEOF(size_t)
1082 AC_CHECK_SIZEOF(pid_t)
1084 AC_CHECK_TYPES([uint, u_char, ssize_t])
1086 AC_PC_FROM_UCONTEXT([:])
1088 dnl used to include sockaddr_storage, but everybody has that.
1089 AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
1090 [#ifdef HAVE_SYS_TYPES_H
1091 #include <sys/types.h>
1093 #ifdef HAVE_NETINET_IN_H
1094 #include <netinet/in.h>
1096 #ifdef HAVE_NETINET_IN6_H
1097 #include <netinet/in6.h>
1099 #ifdef HAVE_SYS_SOCKET_H
1100 #include <sys/socket.h>
1103 #define _WIN32_WINNT 0x0501
1104 #define WIN32_LEAN_AND_MEAN
1105 #include <winsock2.h>
1106 #include <ws2tcpip.h>
1109 AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
1110 [#ifdef HAVE_SYS_TYPES_H
1111 #include <sys/types.h>
1113 #ifdef HAVE_NETINET_IN_H
1114 #include <netinet/in.h>
1116 #ifdef HAVE_NETINET_IN6_H
1117 #include <netinet/in6.h>
1119 #ifdef HAVE_SYS_SOCKET_H
1120 #include <sys/socket.h>
1123 #define _WIN32_WINNT 0x0501
1124 #define WIN32_LEAN_AND_MEAN
1125 #include <winsock2.h>
1126 #include <ws2tcpip.h>
1131 AC_CHECK_TYPES([rlim_t], , ,
1132 [#ifdef HAVE_SYS_TYPES_H
1133 #include <sys/types.h>
1135 #ifdef HAVE_SYS_TIME_H
1136 #include <sys/time.h>
1138 #ifdef HAVE_SYS_RESOURCE_H
1139 #include <sys/resource.h>
1143 AX_CHECK_SIGN([time_t],
1144 [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
1146 #ifdef HAVE_SYS_TYPES_H
1147 #include <sys/types.h>
1149 #ifdef HAVE_SYS_TIME_H
1150 #include <sys/time.h>
1157 if test "$ax_cv_decl_time_t_signed" = no; then
1158 AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
1161 AX_CHECK_SIGN([size_t],
1162 [ tor_cv_size_t_signed=yes ],
1163 [ tor_cv_size_t_signed=no ], [
1164 #ifdef HAVE_SYS_TYPES_H
1165 #include <sys/types.h>
1169 if test "$ax_cv_decl_size_t_signed" = yes; then
1170 AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
1173 AX_CHECK_SIGN([enum always],
1174 [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
1176 enum always { AAA, BBB, CCC };
1179 AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
1180 #ifdef HAVE_SYS_SOCKET_H
1181 #include <sys/socket.h>
1185 # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
1187 AC_CHECK_SIZEOF(cell_t)
1189 # Now make sure that NULL can be represented as zero bytes.
1190 AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
1191 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1192 [[#include <stdlib.h>
1195 #ifdef HAVE_STDDEF_H
1198 int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
1199 return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
1200 [tor_cv_null_is_zero=yes],
1201 [tor_cv_null_is_zero=no],
1202 [tor_cv_null_is_zero=cross])])
1204 if test "$tor_cv_null_is_zero" = cross ; then
1205 # Cross-compiling; let's hope that the target isn't raving mad.
1206 AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
1209 if test "$tor_cv_null_is_zero" != no; then
1210 AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
1211 [Define to 1 iff memset(0) sets pointers to NULL])
1214 AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
1215 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1216 [[#include <stdlib.h>
1219 #ifdef HAVE_STDDEF_H
1222 int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
1223 return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
1224 [tor_cv_dbl0_is_zero=yes],
1225 [tor_cv_dbl0_is_zero=no],
1226 [tor_cv_dbl0_is_zero=cross])])
1228 if test "$tor_cv_dbl0_is_zero" = cross ; then
1229 # Cross-compiling; let's hope that the target isn't raving mad.
1230 AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
1233 if test "$tor_cv_dbl0_is_zero" != no; then
1234 AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
1235 [Define to 1 iff memset(0) sets doubles to 0.0])
1238 # And what happens when we malloc zero?
1239 AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
1240 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1241 [[#include <stdlib.h>
1244 #ifdef HAVE_STDDEF_H
1247 int main () { return malloc(0)?0:1; }]])],
1248 [tor_cv_malloc_zero_works=yes],
1249 [tor_cv_malloc_zero_works=no],
1250 [tor_cv_malloc_zero_works=cross])])
1252 if test "$tor_cv_malloc_zero_works" = cross; then
1253 # Cross-compiling; let's hope that the target isn't raving mad.
1254 AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
1257 if test "$tor_cv_malloc_zero_works" = yes; then
1258 AC_DEFINE([MALLOC_ZERO_WORKS], 1,
1259 [Define to 1 iff malloc(0) returns a pointer])
1262 # whether we seem to be in a 2s-complement world.
1263 AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
1264 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1265 [[int main () { int problem = ((-99) != (~99)+1);
1266 return problem ? 1 : 0; }]])],
1267 [tor_cv_twos_complement=yes],
1268 [tor_cv_twos_complement=no],
1269 [tor_cv_twos_complement=cross])])
1271 if test "$tor_cv_twos_complement" = cross ; then
1272 # Cross-compiling; let's hope that the target isn't raving mad.
1273 AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
1276 if test "$tor_cv_twos_complement" != no ; then
1277 AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
1278 [Define to 1 iff we represent negative integers with two's complement])
1281 # What does shifting a negative value do?
1282 AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
1283 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1284 [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
1285 [tor_cv_sign_extend=yes],
1286 [tor_cv_sign_extend=no],
1287 [tor_cv_sign_extend=cross])])
1289 if test "$tor_cv_sign_extend" = cross ; then
1290 # Cross-compiling; let's hope that the target isn't raving mad.
1291 AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
1294 if test "$tor_cv_sign_extend" != no ; then
1295 AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
1296 [Define to 1 iff right-shifting a negative value performs sign-extension])
1299 # Whether we should use the dmalloc memory allocation debugging library.
1300 AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
1301 AC_ARG_WITH(dmalloc,
1302 AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
1303 [if [[ "$withval" = "yes" ]]; then
1309 fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
1312 if [[ $dmalloc -eq 1 ]]; then
1313 AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
1314 AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
1315 AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
1316 AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
1319 AC_ARG_WITH(tcmalloc,
1320 AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
1321 [ tcmalloc=yes ], [ tcmalloc=no ])
1323 if test x$tcmalloc = xyes ; then
1324 LDFLAGS="-ltcmalloc $LDFLAGS"
1327 using_custom_malloc=no
1328 if test x$enable_openbsd_malloc = xyes ; then
1329 using_custom_malloc=yes
1331 if test x$tcmalloc = xyes ; then
1332 using_custom_malloc=yes
1334 if test $using_custom_malloc = no ; then
1335 AC_CHECK_FUNCS(mallinfo)
1338 # By default, we're going to assume we don't have mlockall()
1339 # bionic and other platforms have various broken mlockall subsystems.
1340 # Some systems don't have a working mlockall, some aren't linkable,
1341 # and some have it but don't declare it.
1342 AC_CHECK_FUNCS(mlockall)
1343 AC_CHECK_DECLS([mlockall], , , [
1344 #ifdef HAVE_SYS_MMAN_H
1345 #include <sys/mman.h>
1348 # Allow user to specify an alternate syslog facility
1349 AC_ARG_WITH(syslog-facility,
1350 AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
1351 syslog_facility="$withval", syslog_facility="LOG_DAEMON")
1352 AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
1353 AC_SUBST(LOGFACILITY)
1355 # Check if we have getresuid and getresgid
1356 AC_CHECK_FUNCS(getresuid getresgid)
1358 # Check for gethostbyname_r in all its glorious incompatible versions.
1359 # (This logic is based on that in Python's configure.in)
1360 AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
1361 [Define this if you have any gethostbyname_r()])
1363 AC_CHECK_FUNC(gethostbyname_r, [
1364 AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
1366 CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
1367 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
1371 struct hostent *h1, *h2;
1373 (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
1375 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1376 AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
1377 [Define this if gethostbyname_r takes 6 arguments])
1386 (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
1388 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1389 AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
1390 [Define this if gethostbyname_r takes 5 arguments])
1398 struct hostent_data hd;
1399 (void) gethostbyname_r(cp1,h1,&hd);
1401 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1402 AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
1403 [Define this if gethostbyname_r takes 3 arguments])
1413 AC_CACHE_CHECK([whether the C compiler supports __func__],
1414 tor_cv_have_func_macro,
1415 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1417 int main(int c, char **v) { puts(__func__); }])],
1418 tor_cv_have_func_macro=yes,
1419 tor_cv_have_func_macro=no))
1421 AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
1422 tor_cv_have_FUNC_macro,
1423 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1425 int main(int c, char **v) { puts(__FUNC__); }])],
1426 tor_cv_have_FUNC_macro=yes,
1427 tor_cv_have_FUNC_macro=no))
1429 AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
1430 tor_cv_have_FUNCTION_macro,
1431 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1433 int main(int c, char **v) { puts(__FUNCTION__); }])],
1434 tor_cv_have_FUNCTION_macro=yes,
1435 tor_cv_have_FUNCTION_macro=no))
1437 AC_CACHE_CHECK([whether we have extern char **environ already declared],
1438 tor_cv_have_environ_declared,
1439 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1440 /* We define _GNU_SOURCE here because it is also defined in compat.c.
1441 * Without it environ doesn't get declared. */
1443 #ifdef HAVE_UNISTD_H
1447 int main(int c, char **v) { char **t = environ; }])],
1448 tor_cv_have_environ_declared=yes,
1449 tor_cv_have_environ_declared=no))
1451 if test "$tor_cv_have_func_macro" = 'yes'; then
1452 AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
1455 if test "$tor_cv_have_FUNC_macro" = 'yes'; then
1456 AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
1459 if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
1460 AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
1461 [Defined if the compiler supports __FUNCTION__])
1464 if test "$tor_cv_have_environ_declared" = 'yes'; then
1465 AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
1466 [Defined if we have extern char **environ already declared])
1469 # $prefix stores the value of the --prefix command line option, or
1470 # NONE if the option wasn't set. In the case that it wasn't set, make
1471 # it be the default, so that we can use it to expand directories now.
1472 if test "x$prefix" = "xNONE"; then
1473 prefix=$ac_default_prefix
1476 # and similarly for $exec_prefix
1477 if test "x$exec_prefix" = "xNONE"; then
1481 if test "x$BUILDDIR" = "x"; then
1485 AH_TEMPLATE([BUILDDIR],[tor's build directory])
1486 AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
1488 if test "x$CONFDIR" = "x"; then
1489 CONFDIR=`eval echo $sysconfdir/tor`
1492 AH_TEMPLATE([CONFDIR],[tor's configuration directory])
1493 AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
1495 BINDIR=`eval echo $bindir`
1497 LOCALSTATEDIR=`eval echo $localstatedir`
1498 AC_SUBST(LOCALSTATEDIR)
1500 if test "$bwin32" = true; then
1501 # Test if the linker supports the --nxcompat and --dynamicbase options
1503 save_LDFLAGS="$LDFLAGS"
1504 LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
1505 AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
1506 AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
1507 [AC_MSG_RESULT([yes])]
1508 [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
1509 [AC_MSG_RESULT([no])]
1511 LDFLAGS="$save_LDFLAGS"
1514 # Set CFLAGS _after_ all the above checks, since our warnings are stricter
1515 # than autoconf's macros like.
1516 if test "$GCC" = yes; then
1517 # Disable GCC's strict aliasing checks. They are an hours-to-debug
1518 # accident waiting to happen.
1519 CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
1521 # Override optimization level for non-gcc compilers
1523 enable_gcc_warnings=no
1524 enable_gcc_warnings_advisory=no
1527 # OS X Lion started deprecating the system openssl. Let's just disable
1528 # all deprecation warnings on OS X. Also, to potentially make the binary
1529 # a little smaller, let's enable dead_strip.
1533 CFLAGS="$CFLAGS -Wno-deprecated-declarations"
1534 LDFLAGS="$LDFLAGS -dead_strip" ;;
1537 # Add some more warnings which we use in development but not in the
1538 # released versions. (Some relevant gcc versions can't handle these.)
1539 if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
1541 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1542 #if !defined(__GNUC__) || (__GNUC__ < 4)
1544 #endif])], have_gcc4=yes, have_gcc4=no)
1546 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1547 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
1549 #endif])], have_gcc42=yes, have_gcc42=no)
1551 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1552 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
1554 #endif])], have_gcc43=yes, have_gcc43=no)
1556 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1557 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
1559 #endif])], have_gcc46=yes, have_gcc46=no)
1562 save_CFLAGS="$CFLAGS"
1563 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1564 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
1565 have_shorten64_flag=no)
1566 CFLAGS="$save_CFLAGS"
1569 *-*-openbsd* | *-*-bitrig*)
1570 # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
1571 # That's fine, except that the headers don't pass -Wredundant-decls.
1572 # Therefore, let's disable -Wsystem-headers when we're building
1573 # with maximal warnings on OpenBSD.
1574 CFLAGS="$CFLAGS -Wno-system-headers" ;;
1577 CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
1578 CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
1579 CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
1580 CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
1581 CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
1583 if test x$enable_gcc_warnings = xyes; then
1584 CFLAGS="$CFLAGS -Werror"
1587 # Disabled, so we can use mallinfo(): -Waggregate-return
1589 if test x$have_gcc4 = xyes ; then
1590 # These warnings break gcc 3.3.5 and work on gcc 4.0.2
1591 CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wold-style-definition"
1594 if test x$have_gcc42 = xyes ; then
1595 # These warnings break gcc 4.0.2 and work on gcc 4.2
1596 # XXXX020 See if any of these work with earlier versions.
1597 CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
1599 # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
1602 if test x$have_gcc42 = xyes && test x$have_clang = xno; then
1603 # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
1604 CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
1607 if test x$have_gcc43 = xyes ; then
1608 # These warnings break gcc 4.2 and work on gcc 4.3
1609 # XXXX020 See if any of these work with earlier versions.
1610 CFLAGS="$CFLAGS -Wextra -Warray-bounds"
1613 if test x$have_gcc46 = xyes ; then
1614 # This warning was added in gcc 4.3, but it appears to generate
1615 # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
1616 CFLAGS="$CFLAGS -Wlogical-op"
1619 if test x$have_shorten64_flag = xyes ; then
1620 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1625 ##This will break the world on some 64-bit architectures
1626 # CFLAGS="$CFLAGS -Winline"
1629 if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
1632 AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-profiling.])
1636 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
1641 contrib/dist/suse/tor.sh
1642 contrib/operator-tools/tor.logrotate
1645 contrib/dist/tor.service
1646 src/config/torrc.sample
1647 src/config/torrc.minimal
1648 scripts/maint/checkOptionDocs.pl
1649 scripts/maint/updateVersions.pl
1652 if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
1653 regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
1654 for file in $regular_mans ; do
1655 if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
1656 echo "==================================";
1658 echo "Building Tor has failed since manpages cannot be built.";
1660 echo "You need asciidoc installed to be able to build the manpages.";
1661 echo "To build without manpages, use the --disable-asciidoc argument";
1662 echo "when calling configure.";
1664 echo "==================================";