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],[0.2.7.2-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="$CFLAGS -c99"
359 AC_SEARCH_LIBS(socket, [socket network])
360 AC_SEARCH_LIBS(gethostbyname, [nsl])
361 AC_SEARCH_LIBS(dlopen, [dl])
362 AC_SEARCH_LIBS(inet_aton, [resolv])
364 AC_SEARCH_LIBS([clock_gettime], [rt])
365 if test "$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 $CPPFLAGS"
635 AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
636 [#include <openssl/ssl.h>
640 SSL_SESSION_get_master_key \
641 SSL_get_server_random \
642 SSL_get_client_ciphers \
643 SSL_get_client_random \
648 dnl Check if OpenSSL has scrypt implementation.
649 AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
652 LDFLAGS="$save_LDFLAGS"
653 CPPFLAGS="$save_CPPFLAGS"
655 dnl ------------------------------------------------------
656 dnl Where do you live, zlib? And how do we call you?
658 tor_zlib_pkg_redhat="zlib"
659 tor_zlib_pkg_debian="zlib1g"
660 tor_zlib_devpkg_redhat="zlib-devel"
661 tor_zlib_devpkg_debian="zlib1g-dev"
663 TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
665 [const char * zlibVersion(void);],
666 [zlibVersion(); exit(0);], [--with-zlib-dir],
669 if test "$enable_static_zlib" = "yes"; then
670 if test "$tor_cv_library_zlib_dir" = "(system)"; then
671 AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
672 using --enable-static-zlib")
674 TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
679 AC_SUBST(TOR_ZLIB_LIBS)
681 dnl ---------------------------------------------------------------------
682 dnl Now that we know about our major libraries, we can check for compiler
683 dnl and linker hardening options. We need to do this with the libraries known,
684 dnl since sometimes the linker will like an option but not be willing to
685 dnl use it with a build of a library.
687 all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
688 all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
690 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
691 #if !defined(__clang__)
693 #endif])], have_clang=yes, have_clang=no)
695 if test x$enable_gcc_hardening != xno; then
696 CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
697 if test x$have_clang = xyes; then
698 TOR_CHECK_CFLAGS(-Qunused-arguments)
700 TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
701 AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
702 AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
703 m4_ifdef([AS_VAR_IF],[
704 AS_VAR_IF(can_compile, [yes],
705 AS_VAR_IF(can_link, [yes],
707 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.)]))
709 AS_VAR_POPDEF([can_link])
710 AS_VAR_POPDEF([can_compile])
711 TOR_CHECK_CFLAGS(-Wstack-protector)
712 TOR_CHECK_CFLAGS(-fwrapv)
713 TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
714 if test "$bwin32" = "false"; then
715 TOR_CHECK_CFLAGS(-fPIE)
716 TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
720 if test x$enable_expensive_hardening = xyes ; then
721 TOR_CHECK_CFLAGS([-fsanitize=address])
722 TOR_CHECK_CFLAGS([-fsanitize=undefined])
723 TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
726 if test x$enable_linker_hardening != xno; then
727 TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
730 # For backtrace support
731 TOR_CHECK_LDFLAGS(-rdynamic)
733 dnl ------------------------------------------------------
734 dnl Now see if we have a -fomit-frame-pointer compiler option.
736 saved_CFLAGS="$CFLAGS"
737 TOR_CHECK_CFLAGS(-fomit-frame-pointer)
738 F_OMIT_FRAME_POINTER=''
739 if test "$saved_CFLAGS" != "$CFLAGS"; then
740 if test x$enable_expensive_hardening != xyes ; then
741 F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
744 CFLAGS="$saved_CFLAGS"
745 AC_SUBST(F_OMIT_FRAME_POINTER)
747 dnl ------------------------------------------------------
748 dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
749 dnl for us, as GCC 4.6 and later do at many optimization levels), then
750 dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
752 TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
754 dnl ============================================================
755 dnl Check for libseccomp
757 if test "x$enable_seccomp" != "xno"; then
758 AC_CHECK_HEADERS([seccomp.h])
759 AC_SEARCH_LIBS(seccomp_init, [seccomp])
762 dnl ============================================================
763 dnl Check for libscrypt
765 if test "x$enable_libscrypt" != "xno"; then
766 AC_CHECK_HEADERS([libscrypt.h])
767 AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
770 dnl ============================================================
771 dnl We need an implementation of curve25519.
773 dnl set these defaults.
774 build_curve25519_donna=no
775 build_curve25519_donna_c64=no
776 use_curve25519_donna=no
777 use_curve25519_nacl=no
780 dnl The best choice is using curve25519-donna-c64, but that requires
782 AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
783 tor_cv_can_use_curve25519_donna_c64,
785 [AC_LANG_PROGRAM([dnl
787 typedef unsigned uint128_t __attribute__((mode(TI)));
788 int func(uint64_t a, uint64_t b) {
789 uint128_t c = ((uint128_t)a) * b;
790 int ok = ((uint64_t)(c>>96)) == 522859 &&
791 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
792 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
793 (((uint64_t)(c))&0xffffffffL) == 0;
797 int ok = func( ((uint64_t)2000000000) * 1000000000,
798 ((uint64_t)1234567890) << 24);
801 [tor_cv_can_use_curve25519_donna_c64=yes],
802 [tor_cv_can_use_curve25519_donna_c64=no],
804 [AC_LANG_PROGRAM([dnl
806 typedef unsigned uint128_t __attribute__((mode(TI)));
807 int func(uint64_t a, uint64_t b) {
808 uint128_t c = ((uint128_t)a) * b;
809 int ok = ((uint64_t)(c>>96)) == 522859 &&
810 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
811 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
812 (((uint64_t)(c))&0xffffffffL) == 0;
816 int ok = func( ((uint64_t)2000000000) * 1000000000,
817 ((uint64_t)1234567890) << 24);
820 [tor_cv_can_use_curve25519_donna_c64=cross],
821 [tor_cv_can_use_curve25519_donna_c64=no])])])
823 AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
824 nacl/crypto_scalarmult_curve25519.h])
826 AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
827 tor_cv_can_use_curve25519_nacl,
828 [tor_saved_LIBS="$LIBS"
831 [AC_LANG_PROGRAM([dnl
832 #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
833 #include <crypto_scalarmult_curve25519.h>
834 #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
835 #include <nacl/crypto_scalarmult_curve25519.h>
837 #ifdef crypto_scalarmult_curve25519_ref_BYTES
838 #error Hey, this is the reference implementation! That's not fast.
841 unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
842 ])], [tor_cv_can_use_curve25519_nacl=yes],
843 [tor_cv_can_use_curve25519_nacl=no])
844 LIBS="$tor_saved_LIBS" ])
846 dnl Okay, now we need to figure out which one to actually use. Fall back
847 dnl to curve25519-donna.c
849 if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
850 build_curve25519_donna_c64=yes
851 use_curve25519_donna=yes
852 elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
853 use_curve25519_nacl=yes
854 CURVE25519_LIBS=-lnacl
856 build_curve25519_donna=yes
857 use_curve25519_donna=yes
860 if test x$use_curve25519_donna = xyes; then
861 AC_DEFINE(USE_CURVE25519_DONNA, 1,
862 [Defined if we should use an internal curve25519_donna{,_c64} implementation])
864 if test x$use_curve25519_nacl = xyes; then
865 AC_DEFINE(USE_CURVE25519_NACL, 1,
866 [Defined if we should use a curve25519 from nacl])
868 AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
869 AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
870 AC_SUBST(CURVE25519_LIBS)
872 dnl Make sure to enable support for large off_t if available.
887 , , 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.))
889 dnl These headers are not essential
932 AC_CHECK_HEADERS(sys/param.h)
934 AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
935 [#ifdef HAVE_SYS_TYPES_H
936 #include <sys/types.h>
938 #ifdef HAVE_SYS_SOCKET_H
939 #include <sys/socket.h>
941 AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
942 [#ifdef HAVE_SYS_TYPES_H
943 #include <sys/types.h>
945 #ifdef HAVE_SYS_SOCKET_H
946 #include <sys/socket.h>
952 AC_CHECK_HEADERS(linux/if.h,[],[],
954 #ifdef HAVE_SYS_SOCKET_H
955 #include <sys/socket.h>
959 AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
960 linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
961 [#ifdef HAVE_SYS_TYPES_H
962 #include <sys/types.h>
964 #ifdef HAVE_SYS_SOCKET_H
965 #include <sys/socket.h>
970 #ifdef HAVE_LINUX_TYPES_H
971 #include <linux/types.h>
973 #ifdef HAVE_NETINET_IN6_H
974 #include <netinet/in6.h>
976 #ifdef HAVE_NETINET_IN_H
977 #include <netinet/in.h>
980 AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
981 linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
982 [#ifdef HAVE_SYS_TYPES_H
983 #include <sys/types.h>
985 #ifdef HAVE_SYS_SOCKET_H
986 #include <sys/socket.h>
991 #ifdef HAVE_LINUX_TYPES_H
992 #include <linux/types.h>
994 #ifdef HAVE_NETINET_IN6_H
995 #include <netinet/in6.h>
997 #ifdef HAVE_NETINET_IN_H
998 #include <netinet/in.h>
1000 #ifdef HAVE_LINUX_IF_H
1001 #include <linux/if.h>
1004 if test x$transparent = xtrue ; then
1006 if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
1009 if test x$linux_netfilter_ipv4 = x1 ; then
1012 if test x$linux_netfilter_ipv6_ip6_tables = x1 ; then
1015 if test x$transparent_ok = x1 ; then
1016 AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
1018 *-*-openbsd* | *-*-bitrig*)
1019 AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
1022 AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
1026 AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
1027 [#ifdef HAVE_SYS_TYPES_H
1028 #include <sys/types.h>
1030 #ifdef HAVE_SYS_TIME_H
1031 #include <sys/time.h>
1034 dnl In case we aren't given a working stdint.h, we'll need to grow our own.
1037 AC_CHECK_SIZEOF(int8_t)
1038 AC_CHECK_SIZEOF(int16_t)
1039 AC_CHECK_SIZEOF(int32_t)
1040 AC_CHECK_SIZEOF(int64_t)
1041 AC_CHECK_SIZEOF(uint8_t)
1042 AC_CHECK_SIZEOF(uint16_t)
1043 AC_CHECK_SIZEOF(uint32_t)
1044 AC_CHECK_SIZEOF(uint64_t)
1045 AC_CHECK_SIZEOF(intptr_t)
1046 AC_CHECK_SIZEOF(uintptr_t)
1048 dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
1050 AC_CHECK_SIZEOF(char)
1051 AC_CHECK_SIZEOF(short)
1052 AC_CHECK_SIZEOF(int)
1053 AC_CHECK_SIZEOF(long)
1054 AC_CHECK_SIZEOF(long long)
1055 AC_CHECK_SIZEOF(__int64)
1056 AC_CHECK_SIZEOF(void *)
1057 AC_CHECK_SIZEOF(time_t)
1058 AC_CHECK_SIZEOF(size_t)
1059 AC_CHECK_SIZEOF(pid_t)
1061 AC_CHECK_TYPES([uint, u_char, ssize_t])
1063 AC_PC_FROM_UCONTEXT([/bin/true])
1065 dnl used to include sockaddr_storage, but everybody has that.
1066 AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
1067 [#ifdef HAVE_SYS_TYPES_H
1068 #include <sys/types.h>
1070 #ifdef HAVE_NETINET_IN_H
1071 #include <netinet/in.h>
1073 #ifdef HAVE_NETINET_IN6_H
1074 #include <netinet/in6.h>
1076 #ifdef HAVE_SYS_SOCKET_H
1077 #include <sys/socket.h>
1080 #define _WIN32_WINNT 0x0501
1081 #define WIN32_LEAN_AND_MEAN
1082 #include <winsock2.h>
1083 #include <ws2tcpip.h>
1086 AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
1087 [#ifdef HAVE_SYS_TYPES_H
1088 #include <sys/types.h>
1090 #ifdef HAVE_NETINET_IN_H
1091 #include <netinet/in.h>
1093 #ifdef HAVE_NETINET_IN6_H
1094 #include <netinet/in6.h>
1096 #ifdef HAVE_SYS_SOCKET_H
1097 #include <sys/socket.h>
1100 #define _WIN32_WINNT 0x0501
1101 #define WIN32_LEAN_AND_MEAN
1102 #include <winsock2.h>
1103 #include <ws2tcpip.h>
1108 AC_CHECK_TYPES([rlim_t], , ,
1109 [#ifdef HAVE_SYS_TYPES_H
1110 #include <sys/types.h>
1112 #ifdef HAVE_SYS_TIME_H
1113 #include <sys/time.h>
1115 #ifdef HAVE_SYS_RESOURCE_H
1116 #include <sys/resource.h>
1120 AX_CHECK_SIGN([time_t],
1121 [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
1123 #ifdef HAVE_SYS_TYPES_H
1124 #include <sys/types.h>
1126 #ifdef HAVE_SYS_TIME_H
1127 #include <sys/time.h>
1134 if test "$ax_cv_decl_time_t_signed" = no; then
1135 AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
1138 AX_CHECK_SIGN([size_t],
1139 [ tor_cv_size_t_signed=yes ],
1140 [ tor_cv_size_t_signed=no ], [
1141 #ifdef HAVE_SYS_TYPES_H
1142 #include <sys/types.h>
1146 if test "$ax_cv_decl_size_t_signed" = yes; then
1147 AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
1150 AX_CHECK_SIGN([enum always],
1151 [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
1153 enum always { AAA, BBB, CCC };
1156 AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
1157 #ifdef HAVE_SYS_SOCKET_H
1158 #include <sys/socket.h>
1162 # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
1164 AC_CHECK_SIZEOF(cell_t)
1166 # Now make sure that NULL can be represented as zero bytes.
1167 AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
1168 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1169 [[#include <stdlib.h>
1172 #ifdef HAVE_STDDEF_H
1175 int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
1176 return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
1177 [tor_cv_null_is_zero=yes],
1178 [tor_cv_null_is_zero=no],
1179 [tor_cv_null_is_zero=cross])])
1181 if test "$tor_cv_null_is_zero" = cross ; then
1182 # Cross-compiling; let's hope that the target isn't raving mad.
1183 AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
1186 if test "$tor_cv_null_is_zero" != no; then
1187 AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
1188 [Define to 1 iff memset(0) sets pointers to NULL])
1191 AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
1192 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1193 [[#include <stdlib.h>
1196 #ifdef HAVE_STDDEF_H
1199 int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
1200 return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
1201 [tor_cv_dbl0_is_zero=yes],
1202 [tor_cv_dbl0_is_zero=no],
1203 [tor_cv_dbl0_is_zero=cross])])
1205 if test "$tor_cv_dbl0_is_zero" = cross ; then
1206 # Cross-compiling; let's hope that the target isn't raving mad.
1207 AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
1210 if test "$tor_cv_dbl0_is_zero" != no; then
1211 AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
1212 [Define to 1 iff memset(0) sets doubles to 0.0])
1215 # And what happens when we malloc zero?
1216 AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
1217 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1218 [[#include <stdlib.h>
1221 #ifdef HAVE_STDDEF_H
1224 int main () { return malloc(0)?0:1; }]])],
1225 [tor_cv_malloc_zero_works=yes],
1226 [tor_cv_malloc_zero_works=no],
1227 [tor_cv_malloc_zero_works=cross])])
1229 if test "$tor_cv_malloc_zero_works" = cross; then
1230 # Cross-compiling; let's hope that the target isn't raving mad.
1231 AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
1234 if test "$tor_cv_malloc_zero_works" = yes; then
1235 AC_DEFINE([MALLOC_ZERO_WORKS], 1,
1236 [Define to 1 iff malloc(0) returns a pointer])
1239 # whether we seem to be in a 2s-complement world.
1240 AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
1241 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1242 [[int main () { int problem = ((-99) != (~99)+1);
1243 return problem ? 1 : 0; }]])],
1244 [tor_cv_twos_complement=yes],
1245 [tor_cv_twos_complement=no],
1246 [tor_cv_twos_complement=cross])])
1248 if test "$tor_cv_twos_complement" = cross ; then
1249 # Cross-compiling; let's hope that the target isn't raving mad.
1250 AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
1253 if test "$tor_cv_twos_complement" != no ; then
1254 AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
1255 [Define to 1 iff we represent negative integers with two's complement])
1258 # What does shifting a negative value do?
1259 AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
1260 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1261 [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
1262 [tor_cv_sign_extend=yes],
1263 [tor_cv_sign_extend=no],
1264 [tor_cv_sign_extend=cross])])
1266 if test "$tor_cv_sign_extend" = cross ; then
1267 # Cross-compiling; let's hope that the target isn't raving mad.
1268 AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
1271 if test "$tor_cv_sign_extend" != no ; then
1272 AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
1273 [Define to 1 iff right-shifting a negative value performs sign-extension])
1276 # Whether we should use the dmalloc memory allocation debugging library.
1277 AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
1278 AC_ARG_WITH(dmalloc,
1279 AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
1280 [if [[ "$withval" = "yes" ]]; then
1286 fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
1289 if [[ $dmalloc -eq 1 ]]; then
1290 AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
1291 AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
1292 AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
1293 AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
1296 AC_ARG_WITH(tcmalloc,
1297 AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
1298 [ tcmalloc=yes ], [ tcmalloc=no ])
1300 if test x$tcmalloc = xyes ; then
1301 LDFLAGS="-ltcmalloc $LDFLAGS"
1304 using_custom_malloc=no
1305 if test x$enable_openbsd_malloc = xyes ; then
1306 using_custom_malloc=yes
1308 if test x$tcmalloc = xyes ; then
1309 using_custom_malloc=yes
1311 if test $using_custom_malloc = no ; then
1312 AC_CHECK_FUNCS(mallinfo)
1315 # By default, we're going to assume we don't have mlockall()
1316 # bionic and other platforms have various broken mlockall subsystems.
1317 # Some systems don't have a working mlockall, some aren't linkable,
1318 # and some have it but don't declare it.
1319 AC_CHECK_FUNCS(mlockall)
1320 AC_CHECK_DECLS([mlockall], , , [
1321 #ifdef HAVE_SYS_MMAN_H
1322 #include <sys/mman.h>
1325 # Allow user to specify an alternate syslog facility
1326 AC_ARG_WITH(syslog-facility,
1327 AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
1328 syslog_facility="$withval", syslog_facility="LOG_DAEMON")
1329 AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
1330 AC_SUBST(LOGFACILITY)
1332 # Check if we have getresuid and getresgid
1333 AC_CHECK_FUNCS(getresuid getresgid)
1335 # Check for gethostbyname_r in all its glorious incompatible versions.
1336 # (This logic is based on that in Python's configure.in)
1337 AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
1338 [Define this if you have any gethostbyname_r()])
1340 AC_CHECK_FUNC(gethostbyname_r, [
1341 AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
1343 CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
1344 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
1348 struct hostent *h1, *h2;
1350 (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
1352 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1353 AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
1354 [Define this if gethostbyname_r takes 6 arguments])
1363 (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
1365 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1366 AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
1367 [Define this if gethostbyname_r takes 5 arguments])
1375 struct hostent_data hd;
1376 (void) gethostbyname_r(cp1,h1,&hd);
1378 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1379 AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
1380 [Define this if gethostbyname_r takes 3 arguments])
1390 AC_CACHE_CHECK([whether the C compiler supports __func__],
1391 tor_cv_have_func_macro,
1392 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1394 int main(int c, char **v) { puts(__func__); }])],
1395 tor_cv_have_func_macro=yes,
1396 tor_cv_have_func_macro=no))
1398 AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
1399 tor_cv_have_FUNC_macro,
1400 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1402 int main(int c, char **v) { puts(__FUNC__); }])],
1403 tor_cv_have_FUNC_macro=yes,
1404 tor_cv_have_FUNC_macro=no))
1406 AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
1407 tor_cv_have_FUNCTION_macro,
1408 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1410 int main(int c, char **v) { puts(__FUNCTION__); }])],
1411 tor_cv_have_FUNCTION_macro=yes,
1412 tor_cv_have_FUNCTION_macro=no))
1414 AC_CACHE_CHECK([whether we have extern char **environ already declared],
1415 tor_cv_have_environ_declared,
1416 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1417 /* We define _GNU_SOURCE here because it is also defined in compat.c.
1418 * Without it environ doesn't get declared. */
1420 #ifdef HAVE_UNISTD_H
1424 int main(int c, char **v) { char **t = environ; }])],
1425 tor_cv_have_environ_declared=yes,
1426 tor_cv_have_environ_declared=no))
1428 if test "$tor_cv_have_func_macro" = 'yes'; then
1429 AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
1432 if test "$tor_cv_have_FUNC_macro" = 'yes'; then
1433 AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
1436 if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
1437 AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
1438 [Defined if the compiler supports __FUNCTION__])
1441 if test "$tor_cv_have_environ_declared" = 'yes'; then
1442 AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
1443 [Defined if we have extern char **environ already declared])
1446 # $prefix stores the value of the --prefix command line option, or
1447 # NONE if the option wasn't set. In the case that it wasn't set, make
1448 # it be the default, so that we can use it to expand directories now.
1449 if test "x$prefix" = "xNONE"; then
1450 prefix=$ac_default_prefix
1453 # and similarly for $exec_prefix
1454 if test "x$exec_prefix" = "xNONE"; then
1458 if test "x$BUILDDIR" = "x"; then
1462 AH_TEMPLATE([BUILDDIR],[tor's build directory])
1463 AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
1465 if test "x$CONFDIR" = "x"; then
1466 CONFDIR=`eval echo $sysconfdir/tor`
1469 AH_TEMPLATE([CONFDIR],[tor's configuration directory])
1470 AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
1472 BINDIR=`eval echo $bindir`
1474 LOCALSTATEDIR=`eval echo $localstatedir`
1475 AC_SUBST(LOCALSTATEDIR)
1477 if test "$bwin32" = true; then
1478 # Test if the linker supports the --nxcompat and --dynamicbase options
1480 save_LDFLAGS="$LDFLAGS"
1481 LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
1482 AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
1483 AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
1484 [AC_MSG_RESULT([yes])]
1485 [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
1486 [AC_MSG_RESULT([no])]
1488 LDFLAGS="$save_LDFLAGS"
1491 # Set CFLAGS _after_ all the above checks, since our warnings are stricter
1492 # than autoconf's macros like.
1493 if test "$GCC" = yes; then
1494 # Disable GCC's strict aliasing checks. They are an hours-to-debug
1495 # accident waiting to happen.
1496 CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
1498 # Override optimization level for non-gcc compilers
1500 enable_gcc_warnings=no
1501 enable_gcc_warnings_advisory=no
1504 # OS X Lion started deprecating the system openssl. Let's just disable
1505 # all deprecation warnings on OS X. Also, to potentially make the binary
1506 # a little smaller, let's enable dead_strip.
1510 CFLAGS="$CFLAGS -Wno-deprecated-declarations"
1511 LDFLAGS="$LDFLAGS -dead_strip" ;;
1514 # Add some more warnings which we use in development but not in the
1515 # released versions. (Some relevant gcc versions can't handle these.)
1516 if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
1518 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1519 #if !defined(__GNUC__) || (__GNUC__ < 4)
1521 #endif])], have_gcc4=yes, have_gcc4=no)
1523 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1524 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
1526 #endif])], have_gcc42=yes, have_gcc42=no)
1528 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1529 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
1531 #endif])], have_gcc43=yes, have_gcc43=no)
1533 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1534 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
1536 #endif])], have_gcc46=yes, have_gcc46=no)
1539 save_CFLAGS="$CFLAGS"
1540 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1541 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
1542 have_shorten64_flag=no)
1543 CFLAGS="$save_CFLAGS"
1546 *-*-openbsd* | *-*-bitrig*)
1547 # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
1548 # That's fine, except that the headers don't pass -Wredundant-decls.
1549 # Therefore, let's disable -Wsystem-headers when we're building
1550 # with maximal warnings on OpenBSD.
1551 CFLAGS="$CFLAGS -Wno-system-headers" ;;
1554 CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
1555 CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
1556 CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
1557 CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
1558 CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
1560 if test x$enable_gcc_warnings = xyes; then
1561 CFLAGS="$CFLAGS -Werror"
1564 # Disabled, so we can use mallinfo(): -Waggregate-return
1566 if test x$have_gcc4 = xyes ; then
1567 # These warnings break gcc 3.3.5 and work on gcc 4.0.2
1568 CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wold-style-definition"
1571 if test x$have_gcc42 = xyes ; then
1572 # These warnings break gcc 4.0.2 and work on gcc 4.2
1573 # XXXX020 See if any of these work with earlier versions.
1574 CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
1576 # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
1579 if test x$have_gcc42 = xyes && test x$have_clang = xno; then
1580 # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
1581 CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
1584 if test x$have_gcc43 = xyes ; then
1585 # These warnings break gcc 4.2 and work on gcc 4.3
1586 # XXXX020 See if any of these work with earlier versions.
1587 CFLAGS="$CFLAGS -Wextra -Warray-bounds"
1590 if test x$have_gcc46 = xyes ; then
1591 # This warning was added in gcc 4.3, but it appears to generate
1592 # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
1593 CFLAGS="$CFLAGS -Wlogical-op"
1596 if test x$have_shorten64_flag = xyes ; then
1597 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1602 ##This will break the world on some 64-bit architectures
1603 # CFLAGS="$CFLAGS -Winline"
1606 if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
1609 AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-profiling.])
1613 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
1618 contrib/dist/suse/tor.sh
1619 contrib/operator-tools/tor.logrotate
1622 contrib/dist/tor.service
1623 src/config/torrc.sample
1624 src/config/torrc.minimal
1625 scripts/maint/checkOptionDocs.pl
1626 scripts/maint/updateVersions.pl
1627 src/test/test_zero_length_keys.sh
1628 src/test/test_ntor.sh
1632 if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
1633 regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
1634 for file in $regular_mans ; do
1635 if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
1636 echo "==================================";
1638 echo "Building Tor has failed since manpages cannot be built.";
1640 echo "You need asciidoc installed to be able to build the manpages.";
1641 echo "To build without manpages, use the --disable-asciidoc argument";
1642 echo "when calling configure.";
1644 echo "==================================";