1 dnl Copyright (c) 2001-2004, Roger Dingledine
2 dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
3 dnl Copyright (c) 2007-2013, The Tor Project, Inc.
4 dnl See LICENSE for licensing information
6 AC_INIT([tor],[0.2.5.6-alpha])
7 AC_CONFIG_SRCDIR([src/or/main.c])
8 AC_CONFIG_MACRO_DIR([m4])
10 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
11 AC_CONFIG_HEADERS([orconfig.h])
15 if test -f /etc/redhat-release ; then
16 if test -f /usr/kerberos/include ; then
17 CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
21 # Not a no-op; we want to make sure that CPPFLAGS is set before we use
22 # the += operator on it in src/or/Makefile.am
23 CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
25 #XXXX020 We should make these enabled or not, before 0.2.0.x-final
26 AC_ARG_ENABLE(buf-freelists,
27 AS_HELP_STRING(--enable-buf-freelists, enable freelists for buffer RAM))
28 AC_ARG_ENABLE(mempools,
29 AS_HELP_STRING(--enable-mempools, enable mempools for relay cells))
30 AC_ARG_ENABLE(openbsd-malloc,
31 AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd. Linux only))
32 AC_ARG_ENABLE(instrument-downloads,
33 AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
34 AC_ARG_ENABLE(static-openssl,
35 AS_HELP_STRING(--enable-static-openssl, Link against a static openssl library. Requires --with-openssl-dir))
36 AC_ARG_ENABLE(static-libevent,
37 AS_HELP_STRING(--enable-static-libevent, Link against a static libevent library. Requires --with-libevent-dir))
38 AC_ARG_ENABLE(static-zlib,
39 AS_HELP_STRING(--enable-static-zlib, Link against a static zlib library. Requires --with-zlib-dir))
40 AC_ARG_ENABLE(static-tor,
41 AS_HELP_STRING(--enable-static-tor, Create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir))
42 AC_ARG_ENABLE(curve25519,
43 AS_HELP_STRING(--disable-curve25519, Build Tor with no curve25519 elliptic-curve crypto support))
44 AC_ARG_ENABLE(unittests,
45 AS_HELP_STRING(--disable-unittests, [Don't build unit tests for Tor. Risky!]))
46 AC_ARG_ENABLE(coverage,
47 AS_HELP_STRING(--enable-coverage, [Enable coverage support in the unit-test build]))
49 AM_CONDITIONAL(UNITTESTS_ENABLED, test x$enable_unittests != xno)
50 AM_CONDITIONAL(COVERAGE_ENABLED, test x$enable_coverage = xyes)
52 if test "$enable_static_tor" = "yes"; then
53 enable_static_libevent="yes";
54 enable_static_openssl="yes";
55 enable_static_zlib="yes";
56 CFLAGS="$CFLAGS -static"
59 if test x$enable_buf_freelists = xyes; then
60 AC_DEFINE(ENABLE_BUF_FREELISTS, 1,
61 [Defined if we try to use freelists for buffer RAM chunks])
64 AM_CONDITIONAL(USE_MEMPOOLS, test x$enable_mempools = xyes)
65 if test x$enable_mempools = xyes; then
66 AC_DEFINE(ENABLE_MEMPOOLS, 1,
67 [Defined if we try to use mempools for cells being relayed])
70 AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
71 if test x$enable_instrument_downloads = xyes; then
72 AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
73 [Defined if we want to keep track of how much of each kind of resource we download.])
76 AC_ARG_ENABLE(transparent,
77 AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
78 [case "${enableval}" in
79 yes) transparent=true ;;
80 no) transparent=false ;;
81 *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
82 esac], [transparent=true])
84 AC_ARG_ENABLE(asciidoc,
85 AS_HELP_STRING(--disable-asciidoc, don't use asciidoc (disables building of manpages)),
86 [case "${enableval}" in
89 *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
90 esac], [asciidoc=true])
92 # By default, we're not ready to ship a NAT-PMP aware Tor
93 AC_ARG_ENABLE(nat-pmp,
94 AS_HELP_STRING(--enable-nat-pmp, enable NAT-PMP support),
95 [case "${enableval}" in
98 * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
99 esac], [natpmp=false])
101 # By default, we're not ready to ship a UPnP aware Tor
103 AS_HELP_STRING(--enable-upnp, enable UPnP support),
104 [case "${enableval}" in
107 * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
111 AC_ARG_ENABLE(threads,
112 AS_HELP_STRING(--disable-threads, disable multi-threading support))
114 if test x$enable_threads = x; then
117 # Don't try multithreading on solaris -- cpuworkers seem to lock.
118 AC_MSG_NOTICE([You are running Solaris; Sometimes threading makes
119 cpu workers lock up here, so I will disable threads.])
120 enable_threads="no";;
122 enable_threads="yes";;
126 if test "$enable_threads" = "yes"; then
127 AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
132 AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
136 AC_ARG_ENABLE(gcc-warnings,
137 AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
138 AC_ARG_ENABLE(gcc-warnings-advisory,
139 AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
141 dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
142 AC_ARG_ENABLE(gcc-hardening,
143 AS_HELP_STRING(--disable-gcc-hardening, disable compiler security checks))
145 AC_ARG_ENABLE(expensive-hardening,
146 AS_HELP_STRING(--enable-expensive-hardening, enable more expensive compiler hardening; makes Tor slower))
148 dnl Linker hardening options
149 dnl Currently these options are ELF specific - you can't use this with MacOSX
150 AC_ARG_ENABLE(linker-hardening,
151 AS_HELP_STRING(--disable-linker-hardening, disable linker security fixups))
153 AC_ARG_ENABLE(local-appdata,
154 AS_HELP_STRING(--enable-local-appdata, default to host local application data paths on Windows))
155 if test "$enable_local_appdata" = "yes"; then
156 AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
157 [Defined if we default to host local appdata paths on Windows])
161 AC_ARG_ENABLE(tor2web-mode,
162 AS_HELP_STRING(--enable-tor2web-mode, support tor2web non-anonymous mode),
163 [if test x$enableval = xyes; then
164 CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
167 AC_ARG_ENABLE(bufferevents,
168 AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))
170 AC_ARG_ENABLE(tool-name-check,
171 AS_HELP_STRING(--disable-tool-name-check, check for sanely named toolchain when cross-compiling))
173 AC_ARG_ENABLE(seccomp,
174 AS_HELP_STRING(--disable-seccomp, do not attempt to use libseccomp))
176 dnl check for the correct "ar" when cross-compiling
177 AN_MAKEVAR([AR], [AC_PROG_AR])
178 AN_PROGRAM([ar], [AC_PROG_AR])
179 AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
182 dnl Check whether the above macro has settled for a simply named tool even
183 dnl though we're cross compiling. We must do this before running AC_PROG_CC,
184 dnl because that will find any cc on the system, not only the cross-compiler,
185 dnl and then verify that a binary built with this compiler runs on the
186 dnl build system. It will then come to the false conclusion that we're not
188 if test x$enable_tool_name_check != xno; then
189 if test x$ac_tool_warned = xyes; then
190 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.)])
191 elif test "x$ac_ct_AR" != x -a x$cross_compiling = xmaybe; then
192 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.)])
201 dnl autoconf 2.59 appears not to support AC_PROG_SED
202 AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
204 dnl check for asciidoc and a2x
205 AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
206 AC_PATH_PROGS([A2X], [a2x a2x.py], none)
208 AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
210 AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
211 AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
212 AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
216 AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
217 if test "x$PYTHON" = "x"; then
218 AC_MSG_WARN([Python unavailable; some tests will not be run.])
220 AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
222 ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
223 AC_C_FLEXIBLE_ARRAY_MEMBER
225 dnl Maybe we've got an old autoconf...
226 AC_CACHE_CHECK([for flexible array members],
230 struct abc { int a; char b[]; };
232 struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
235 [tor_cv_c_flexarray=yes],
236 [tor_cv_c_flexarray=no])])
237 if test $tor_cv_flexarray = yes ; then
238 AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
240 AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
244 AC_PATH_PROG([SHA1SUM], [sha1sum], none)
245 AC_PATH_PROG([OPENSSL], [openssl], none)
248 AC_ARG_WITH(tor-user,
249 [ --with-tor-user=NAME Specify username for tor daemon ],
257 AC_ARG_WITH(tor-group,
258 [ --with-tor-group=NAME Specify group name for tor daemon ],
266 dnl If _WIN32 is defined and non-zero, we are building for win32
267 AC_MSG_CHECKING([for win32])
268 AC_RUN_IFELSE([AC_LANG_SOURCE([
269 int main(int c, char **v) {
280 bwin32=true; AC_MSG_RESULT([yes]),
281 bwin32=false; AC_MSG_RESULT([no]),
282 bwin32=cross; AC_MSG_RESULT([cross])
285 if test "$bwin32" = cross; then
286 AC_MSG_CHECKING([for win32 (cross)])
287 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
289 int main(int c, char **v) {return 0;}
292 int main(int c, char **v) {return x(y);}
295 bwin32=true; AC_MSG_RESULT([yes]),
296 bwin32=false; AC_MSG_RESULT([no]))
299 AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
301 dnl Enable C99 when compiling with MIPSpro
302 AC_MSG_CHECKING([for MIPSpro compiler])
303 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
304 #if (defined(__sgi) && defined(_COMPILER_VERSION))
309 bmipspro=false; AC_MSG_RESULT(no),
310 bmipspro=true; AC_MSG_RESULT(yes))
312 if test "$bmipspro" = true; then
313 CFLAGS="$CFLAGS -c99"
318 AC_SEARCH_LIBS(socket, [socket network])
319 AC_SEARCH_LIBS(gethostbyname, [nsl])
320 AC_SEARCH_LIBS(dlopen, [dl])
321 AC_SEARCH_LIBS(inet_aton, [resolv])
323 AC_SEARCH_LIBS([clock_gettime], [rt])
324 if test "$LIBS" != "$saved_LIBS"; then
325 # Looks like we need -lrt for clock_gettime().
329 if test "$enable_threads" = "yes"; then
330 AC_SEARCH_LIBS(pthread_create, [pthread])
331 AC_SEARCH_LIBS(pthread_detach, [pthread])
334 dnl -------------------------------------------------------------------
335 dnl Check for functions before libevent, since libevent-1.2 apparently
336 dnl exports strlcpy without defining it in a header.
342 backtrace_symbols_fd \
375 if test "$enable_threads" = "yes"; then
376 AC_CHECK_HEADERS(pthread.h)
377 AC_CHECK_FUNCS(pthread_create)
380 dnl ------------------------------------------------------
381 dnl Where do you live, libevent? And how do we call you?
383 if test "$bwin32" = true; then
384 TOR_LIB_WS32=-lws2_32
385 TOR_LIB_IPHLPAPI=-liphlpapi
386 # Some of the cargo-cults recommend -lwsock32 as well, but I don't
387 # think it's actually necessary.
393 AC_SUBST(TOR_LIB_WS32)
394 AC_SUBST(TOR_LIB_GDI)
395 AC_SUBST(TOR_LIB_IPHLPAPI)
397 dnl We need to do this before we try our disgusting hack below.
398 AC_CHECK_HEADERS([sys/types.h])
400 dnl This is a disgusting hack so we safely include older libevent headers.
401 AC_CHECK_TYPE(u_int64_t, unsigned long long)
402 AC_CHECK_TYPE(u_int32_t, unsigned long)
403 AC_CHECK_TYPE(u_int16_t, unsigned short)
404 AC_CHECK_TYPE(u_int8_t, unsigned char)
406 tor_libevent_pkg_redhat="libevent"
407 tor_libevent_pkg_debian="libevent-dev"
408 tor_libevent_devpkg_redhat="libevent-devel"
409 tor_libevent_devpkg_debian="libevent-dev"
411 dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
412 dnl linking for static builds.
413 STATIC_LIBEVENT_FLAGS=""
414 if test "$enable_static_libevent" = "yes"; then
415 if test "$have_rt" = yes; then
416 STATIC_LIBEVENT_FLAGS=" -lrt "
420 TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
422 #include <winsock2.h>
425 #include <sys/time.h>
426 #include <sys/types.h>
427 #include <event.h>], [
429 #include <winsock2.h>
431 void exit(int); void *event_init(void);],
434 {WSADATA d; WSAStartup(0x101,&d); }
436 event_init(); exit(0);
437 ], [--with-libevent-dir], [/opt/libevent])
439 dnl Now check for particular libevent functions.
441 save_LDFLAGS="$LDFLAGS"
442 save_CPPFLAGS="$CPPFLAGS"
443 LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
444 LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
445 CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
446 AC_CHECK_FUNCS([event_get_version \
447 event_get_version_number \
449 event_set_log_callback \
450 evutil_secure_rng_set_urandom_device_file \
451 evutil_secure_rng_init \
452 event_base_loopexit])
453 AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
457 AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
460 LDFLAGS="$save_LDFLAGS"
461 CPPFLAGS="$save_CPPFLAGS"
464 AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
466 if test "$enable_static_libevent" = "yes"; then
467 if test "$tor_cv_library_libevent_dir" = "(system)"; then
468 AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
470 TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
473 TOR_LIBEVENT_LIBS="-levent"
476 dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
477 dnl we can do much better.
478 if test "$enable_bufferevents" = "yes" ; then
479 if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
480 AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
483 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
485 # Check for the right version. First see if version detection works.
486 AC_MSG_CHECKING([whether we can detect the Libevent version])
487 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
488 #include <event2/event.h>
489 #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
495 ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
496 [event_version_number_works=no; AC_MSG_RESULT([no])])
497 if test "$event_version_number_works" != 'yes'; then
498 AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
500 AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
501 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
502 #include <event2/event.h>
503 #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
509 ])], [ AC_MSG_RESULT([yes]) ],
510 [ AC_MSG_RESULT([no])
511 AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
517 LDFLAGS="$save_LDFLAGS"
518 CPPFLAGS="$save_CPPFLAGS"
520 AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
521 if test "$enable_bufferevents" = "yes"; then
522 AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
523 if test "$enable_static_libevent" = "yes"; then
524 TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
526 TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
529 AC_SUBST(TOR_LIBEVENT_LIBS)
531 dnl ------------------------------------------------------
532 dnl Where do you live, libm?
534 dnl On some platforms (Haiku/BeOS) the math library is
535 dnl part of libroot. In which case don't link against lm
538 AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
539 if test "$ac_cv_search_pow" != "none required"; then
540 TOR_LIB_MATH="$ac_cv_search_pow"
543 AC_SUBST(TOR_LIB_MATH)
545 dnl ------------------------------------------------------
546 dnl Where do you live, openssl? And how do we call you?
548 tor_openssl_pkg_redhat="openssl"
549 tor_openssl_pkg_debian="libssl-dev"
550 tor_openssl_devpkg_redhat="openssl-devel"
551 tor_openssl_devpkg_debian="libssl-dev"
553 ALT_openssl_WITHVAL=""
555 [ --with-ssl-dir=PATH Obsolete alias for --with-openssl-dir ],
557 if test "x$withval" != xno && test "x$withval" != "x" ; then
558 ALT_openssl_WITHVAL="$withval"
562 TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
563 [#include <openssl/rand.h>],
564 [void RAND_add(const void *buf, int num, double entropy);],
565 [RAND_add((void*)0,0,0); exit(0);], [],
566 [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
568 dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
570 if test "$enable_static_openssl" = "yes"; then
571 if test "$tor_cv_library_openssl_dir" = "(system)"; then
572 AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
574 TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
577 TOR_OPENSSL_LIBS="-lssl -lcrypto"
579 AC_SUBST(TOR_OPENSSL_LIBS)
581 dnl ------------------------------------------------------
582 dnl Where do you live, zlib? And how do we call you?
584 tor_zlib_pkg_redhat="zlib"
585 tor_zlib_pkg_debian="zlib1g"
586 tor_zlib_devpkg_redhat="zlib-devel"
587 tor_zlib_devpkg_debian="zlib1g-dev"
589 TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
591 [const char * zlibVersion(void);],
592 [zlibVersion(); exit(0);], [--with-zlib-dir],
595 if test "$enable_static_zlib" = "yes"; then
596 if test "$tor_cv_library_zlib_dir" = "(system)"; then
597 AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
598 using --enable-static-zlib")
600 TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
605 AC_SUBST(TOR_ZLIB_LIBS)
607 dnl ---------------------------------------------------------------------
608 dnl Now that we know about our major libraries, we can check for compiler
609 dnl and linker hardening options. We need to do this with the libraries known,
610 dnl since sometimes the linker will like an option but not be willing to
611 dnl use it with a build of a library.
613 all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
614 all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
616 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
617 #if !defined(__clang__)
619 #endif])], have_clang=yes, have_clang=no)
621 if test x$enable_gcc_hardening != xno; then
622 CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
623 if test x$have_clang = xyes; then
624 TOR_CHECK_CFLAGS(-Qunused-arguments)
626 TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
627 AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
628 AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
629 AS_VAR_IF(can_compile, [yes],
630 AS_VAR_IF(can_link, [yes],
632 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.)]))
634 AS_VAR_POPDEF([can_link])
635 AS_VAR_POPDEF([can_compile])
636 TOR_CHECK_CFLAGS(-Wstack-protector)
637 TOR_CHECK_CFLAGS(-fwrapv)
638 TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
639 if test "$bwin32" = "false"; then
640 TOR_CHECK_CFLAGS(-fPIE)
641 TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
645 if test x$enable_expensive_hardening = xyes ; then
646 TOR_CHECK_CFLAGS([-fsanitize=address])
647 TOR_CHECK_CFLAGS([-fsanitize=undefined])
648 TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
651 if test x$enable_linker_hardening != xno; then
652 TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
655 # For backtrace support
656 TOR_CHECK_LDFLAGS(-rdynamic)
658 dnl ------------------------------------------------------
659 dnl Now see if we have a -fomit-frame-pointer compiler option.
661 saved_CFLAGS="$CFLAGS"
662 TOR_CHECK_CFLAGS(-fomit-frame-pointer)
663 F_OMIT_FRAME_POINTER=''
664 if test "$saved_CFLAGS" != "$CFLAGS"; then
665 if test x$enable_expensive_hardening != xyes ; then
666 F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
669 CFLAGS="$saved_CFLAGS"
670 AC_SUBST(F_OMIT_FRAME_POINTER)
672 dnl ------------------------------------------------------
673 dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
674 dnl for us, as GCC 4.6 and later do at many optimization levels), then
675 dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
677 TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
679 dnl ------------------------------------------------------
680 dnl Where do you live, libnatpmp? And how do we call you?
681 dnl There are no packages for Debian or Redhat as of this patch
683 if test "$natpmp" = "true"; then
684 AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
685 TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
686 [#include <natpmp.h>],
690 #include <natpmp.h>],
693 natpmpresp_t response;
694 r = initnatpmp(&natpmp, 0, 0);],
695 [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
697 [--with-libnatpmp-dir],
702 dnl ------------------------------------------------------
703 dnl Where do you live, libminiupnpc? And how do we call you?
704 dnl There are no packages for Debian or Redhat as of this patch
706 if test "$upnp" = "true"; then
707 AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
709 dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
710 dnl to see if we have miniupnpc-1.5 or -1.6
711 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
712 [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])
714 if test "$miniupnpc15" = "true" ; then
715 AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
716 TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
717 [#include <miniupnpc/miniwget.h>
718 #include <miniupnpc/miniupnpc.h>
719 #include <miniupnpc/upnpcommands.h>],
720 [void upnpDiscover(int delay, const char * multicastif,
721 const char * minissdpdsock, int sameport);],
722 [upnpDiscover(1, 0, 0, 0); exit(0);],
723 [--with-libminiupnpc-dir],
726 TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
727 [#include <miniupnpc/miniwget.h>
728 #include <miniupnpc/miniupnpc.h>
729 #include <miniupnpc/upnpcommands.h>],
730 [void upnpDiscover(int delay, const char * multicastif,
731 const char * minissdpdsock, int sameport, int ipv6, int * error);],
732 [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
733 [--with-libminiupnpc-dir],
738 dnl ============================================================
739 dnl Check for libseccomp
741 if test "x$enable_seccomp" != "xno"; then
742 AC_CHECK_HEADERS([seccomp.h])
743 AC_SEARCH_LIBS(seccomp_init, [seccomp])
746 dnl ============================================================
747 dnl We need an implementation of curve25519.
749 dnl set these defaults.
751 build_curve25519_donna=no
752 build_curve25519_donna_c64=no
753 use_curve25519_donna=no
754 use_curve25519_nacl=no
757 if test x$enable_curve25519 != xno; then
759 dnl The best choice is using curve25519-donna-c64, but that requires
761 AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
762 tor_cv_can_use_curve25519_donna_c64,
764 [AC_LANG_PROGRAM([dnl
766 typedef unsigned uint128_t __attribute__((mode(TI)));
767 int func(uint64_t a, uint64_t b) {
768 uint128_t c = ((uint128_t)a) * b;
769 int ok = ((uint64_t)(c>>96)) == 522859 &&
770 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
771 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
772 (((uint64_t)(c))&0xffffffffL) == 0;
776 int ok = func( ((uint64_t)2000000000) * 1000000000,
777 ((uint64_t)1234567890) << 24);
780 [tor_cv_can_use_curve25519_donna_c64=yes],
781 [tor_cv_can_use_curve25519_donna_c64=no],
783 [AC_LANG_PROGRAM([dnl
785 typedef unsigned uint128_t __attribute__((mode(TI)));
786 int func(uint64_t a, uint64_t b) {
787 uint128_t c = ((uint128_t)a) * b;
788 int ok = ((uint64_t)(c>>96)) == 522859 &&
789 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
790 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
791 (((uint64_t)(c))&0xffffffffL) == 0;
795 int ok = func( ((uint64_t)2000000000) * 1000000000,
796 ((uint64_t)1234567890) << 24);
799 [tor_cv_can_use_curve25519_donna_c64=cross],
800 [tor_cv_can_use_curve25519_donna_c64=no])])])
802 AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
803 nacl/crypto_scalarmult_curve25519.h])
805 AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
806 tor_cv_can_use_curve25519_nacl,
807 [tor_saved_LIBS="$LIBS"
810 [AC_LANG_PROGRAM([dnl
811 #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
812 #include <crypto_scalarmult_curve25519.h>
813 #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
814 #include <nacl/crypto_scalarmult_curve25519.h>
816 #ifdef crypto_scalarmult_curve25519_ref_BYTES
817 #error Hey, this is the reference implementation! That's not fast.
820 unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
821 ])], [tor_cv_can_use_curve25519_nacl=yes],
822 [tor_cv_can_use_curve25519_nacl=no])
823 LIBS="$tor_saved_LIBS" ])
825 dnl Okay, now we need to figure out which one to actually use. Fall back
826 dnl to curve25519-donna.c
828 if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
829 build_curve25519_donna_c64=yes
830 use_curve25519_donna=yes
831 elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
832 use_curve25519_nacl=yes
833 CURVE25519_LIBS=-lnacl
835 build_curve25519_donna=yes
836 use_curve25519_donna=yes
838 have_a_curve25519=yes
841 if test x$have_a_curve25519 = xyes; then
842 AC_DEFINE(CURVE25519_ENABLED, 1,
843 [Defined if we have a curve25519 implementation])
845 if test x$use_curve25519_donna = xyes; then
846 AC_DEFINE(USE_CURVE25519_DONNA, 1,
847 [Defined if we should use an internal curve25519_donna{,_c64} implementation])
849 if test x$use_curve25519_nacl = xyes; then
850 AC_DEFINE(USE_CURVE25519_NACL, 1,
851 [Defined if we should use a curve25519 from nacl])
853 AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
854 AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
855 AM_CONDITIONAL(CURVE25519_ENABLED, test x$have_a_curve25519 = xyes)
856 AC_SUBST(CURVE25519_LIBS)
858 dnl Make sure to enable support for large off_t if available.
873 , , AC_MSG_WARN(Some headers were not found, compilation may fail. If compilation succeeds, please send your orconfig.h to the developers so we can fix this warning.))
875 dnl These headers are not essential
915 AC_CHECK_HEADERS(sys/param.h)
917 AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
918 [#ifdef HAVE_SYS_TYPES_H
919 #include <sys/types.h>
921 #ifdef HAVE_SYS_SOCKET_H
922 #include <sys/socket.h>
924 AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
925 [#ifdef HAVE_SYS_TYPES_H
926 #include <sys/types.h>
928 #ifdef HAVE_SYS_SOCKET_H
929 #include <sys/socket.h>
934 AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
935 linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
936 [#ifdef HAVE_SYS_TYPES_H
937 #include <sys/types.h>
939 #ifdef HAVE_SYS_SOCKET_H
940 #include <sys/socket.h>
945 #ifdef HAVE_LINUX_TYPES_H
946 #include <linux/types.h>
948 #ifdef HAVE_NETINET_IN6_H
949 #include <netinet/in6.h>
951 #ifdef HAVE_NETINET_IN_H
952 #include <netinet/in.h>
955 if test x$transparent = xtrue ; then
957 if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
960 if test x$linux_netfilter_ipv4 = x1 ; then
963 if test x$transparent_ok = x1 ; then
964 AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
966 *-*-openbsd* | *-*-bitrig*)
967 AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
970 AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
974 AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
975 [#ifdef HAVE_SYS_TYPES_H
976 #include <sys/types.h>
978 #ifdef HAVE_SYS_TIME_H
979 #include <sys/time.h>
982 dnl In case we aren't given a working stdint.h, we'll need to grow our own.
985 AC_CHECK_SIZEOF(int8_t)
986 AC_CHECK_SIZEOF(int16_t)
987 AC_CHECK_SIZEOF(int32_t)
988 AC_CHECK_SIZEOF(int64_t)
989 AC_CHECK_SIZEOF(uint8_t)
990 AC_CHECK_SIZEOF(uint16_t)
991 AC_CHECK_SIZEOF(uint32_t)
992 AC_CHECK_SIZEOF(uint64_t)
993 AC_CHECK_SIZEOF(intptr_t)
994 AC_CHECK_SIZEOF(uintptr_t)
996 dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
998 AC_CHECK_SIZEOF(char)
999 AC_CHECK_SIZEOF(short)
1000 AC_CHECK_SIZEOF(int)
1001 AC_CHECK_SIZEOF(long)
1002 AC_CHECK_SIZEOF(long long)
1003 AC_CHECK_SIZEOF(__int64)
1004 AC_CHECK_SIZEOF(void *)
1005 AC_CHECK_SIZEOF(time_t)
1006 AC_CHECK_SIZEOF(size_t)
1007 AC_CHECK_SIZEOF(pid_t)
1009 AC_CHECK_TYPES([uint, u_char, ssize_t])
1011 AC_PC_FROM_UCONTEXT([/bin/true])
1013 dnl used to include sockaddr_storage, but everybody has that.
1014 AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
1015 [#ifdef HAVE_SYS_TYPES_H
1016 #include <sys/types.h>
1018 #ifdef HAVE_NETINET_IN_H
1019 #include <netinet/in.h>
1021 #ifdef HAVE_NETINET_IN6_H
1022 #include <netinet/in6.h>
1024 #ifdef HAVE_SYS_SOCKET_H
1025 #include <sys/socket.h>
1028 #define _WIN32_WINNT 0x0501
1029 #define WIN32_LEAN_AND_MEAN
1030 #if defined(_MSC_VER) && (_MSC_VER < 1300)
1031 #include <winsock.h>
1033 #include <winsock2.h>
1034 #include <ws2tcpip.h>
1038 AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
1039 [#ifdef HAVE_SYS_TYPES_H
1040 #include <sys/types.h>
1042 #ifdef HAVE_NETINET_IN_H
1043 #include <netinet/in.h>
1045 #ifdef HAVE_NETINET_IN6_H
1046 #include <netinet/in6.h>
1048 #ifdef HAVE_SYS_SOCKET_H
1049 #include <sys/socket.h>
1052 #define _WIN32_WINNT 0x0501
1053 #define WIN32_LEAN_AND_MEAN
1054 #if defined(_MSC_VER) && (_MSC_VER < 1300)
1055 #include <winsock.h>
1057 #include <winsock2.h>
1058 #include <ws2tcpip.h>
1063 AC_CHECK_TYPES([rlim_t], , ,
1064 [#ifdef HAVE_SYS_TYPES_H
1065 #include <sys/types.h>
1067 #ifdef HAVE_SYS_TIME_H
1068 #include <sys/time.h>
1070 #ifdef HAVE_SYS_RESOURCE_H
1071 #include <sys/resource.h>
1075 AX_CHECK_SIGN([time_t],
1076 [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
1078 #ifdef HAVE_SYS_TYPES_H
1079 #include <sys/types.h>
1081 #ifdef HAVE_SYS_TIME_H
1082 #include <sys/time.h>
1089 if test "$ax_cv_decl_time_t_signed" = no; then
1090 AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
1093 AX_CHECK_SIGN([size_t],
1094 [ tor_cv_size_t_signed=yes ],
1095 [ tor_cv_size_t_signed=no ], [
1096 #ifdef HAVE_SYS_TYPES_H
1097 #include <sys/types.h>
1101 if test "$ax_cv_decl_size_t_signed" = yes; then
1102 AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
1105 AX_CHECK_SIGN([enum always],
1106 [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
1108 enum always { AAA, BBB, CCC };
1111 AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
1112 #ifdef HAVE_SYS_SOCKET_H
1113 #include <sys/socket.h>
1117 # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
1119 AC_CHECK_SIZEOF(cell_t)
1121 # Now make sure that NULL can be represented as zero bytes.
1122 AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
1123 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1124 [[#include <stdlib.h>
1127 #ifdef HAVE_STDDEF_H
1130 int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
1131 return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
1132 [tor_cv_null_is_zero=yes],
1133 [tor_cv_null_is_zero=no],
1134 [tor_cv_null_is_zero=cross])])
1136 if test "$tor_cv_null_is_zero" = cross ; then
1137 # Cross-compiling; let's hope that the target isn't raving mad.
1138 AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
1141 if test "$tor_cv_null_is_zero" != no; then
1142 AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
1143 [Define to 1 iff memset(0) sets pointers to NULL])
1146 AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
1147 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1148 [[#include <stdlib.h>
1151 #ifdef HAVE_STDDEF_H
1154 int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
1155 return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
1156 [tor_cv_dbl0_is_zero=yes],
1157 [tor_cv_dbl0_is_zero=no],
1158 [tor_cv_dbl0_is_zero=cross])])
1160 if test "$tor_cv_dbl0_is_zero" = cross ; then
1161 # Cross-compiling; let's hope that the target isn't raving mad.
1162 AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
1165 if test "$tor_cv_dbl0_is_zero" != no; then
1166 AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
1167 [Define to 1 iff memset(0) sets doubles to 0.0])
1170 # And what happens when we malloc zero?
1171 AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
1172 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1173 [[#include <stdlib.h>
1176 #ifdef HAVE_STDDEF_H
1179 int main () { return malloc(0)?0:1; }]])],
1180 [tor_cv_malloc_zero_works=yes],
1181 [tor_cv_malloc_zero_works=no],
1182 [tor_cv_malloc_zero_works=cross])])
1184 if test "$tor_cv_malloc_zero_works" = cross; then
1185 # Cross-compiling; let's hope that the target isn't raving mad.
1186 AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
1189 if test "$tor_cv_malloc_zero_works" = yes; then
1190 AC_DEFINE([MALLOC_ZERO_WORKS], 1,
1191 [Define to 1 iff malloc(0) returns a pointer])
1194 # whether we seem to be in a 2s-complement world.
1195 AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
1196 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1197 [[int main () { int problem = ((-99) != (~99)+1);
1198 return problem ? 1 : 0; }]])],
1199 [tor_cv_twos_complement=yes],
1200 [tor_cv_twos_complement=no],
1201 [tor_cv_twos_complement=cross])])
1203 if test "$tor_cv_twos_complement" = cross ; then
1204 # Cross-compiling; let's hope that the target isn't raving mad.
1205 AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
1208 if test "$tor_cv_twos_complement" != no ; then
1209 AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
1210 [Define to 1 iff we represent negative integers with two's complement])
1213 # What does shifting a negative value do?
1214 AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
1215 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1216 [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
1217 [tor_cv_sign_extend=yes],
1218 [tor_cv_sign_extend=no],
1219 [tor_cv_sign_extend=cross])])
1221 if test "$tor_cv_sign_extend" = cross ; then
1222 # Cross-compiling; let's hope that the target isn't raving mad.
1223 AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
1226 if test "$tor_cv_sign_extend" != no ; then
1227 AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
1228 [Define to 1 iff right-shifting a negative value performs sign-extension])
1231 # Whether we should use the dmalloc memory allocation debugging library.
1232 AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
1233 AC_ARG_WITH(dmalloc,
1234 [ --with-dmalloc Use debug memory allocation library. ],
1235 [if [[ "$withval" = "yes" ]]; then
1241 fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
1244 if [[ $dmalloc -eq 1 ]]; then
1245 AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
1246 AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
1247 AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
1248 AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
1251 AC_ARG_WITH(tcmalloc,
1252 [ --with-tcmalloc Use tcmalloc memory allocation library. ],
1253 [ tcmalloc=yes ], [ tcmalloc=no ])
1255 if test x$tcmalloc = xyes ; then
1256 LDFLAGS="-ltcmalloc $LDFLAGS"
1259 using_custom_malloc=no
1260 if test x$enable_openbsd_malloc = xyes ; then
1261 using_custom_malloc=yes
1263 if test x$tcmalloc = xyes ; then
1264 using_custom_malloc=yes
1266 if test $using_custom_malloc = no ; then
1267 AC_CHECK_FUNCS(mallinfo)
1270 # By default, we're going to assume we don't have mlockall()
1271 # bionic and other platforms have various broken mlockall subsystems.
1272 # Some systems don't have a working mlockall, some aren't linkable,
1273 # and some have it but don't declare it.
1274 AC_CHECK_FUNCS(mlockall)
1275 AC_CHECK_DECLS([mlockall], , , [
1276 #ifdef HAVE_SYS_MMAN_H
1277 #include <sys/mman.h>
1280 # Allow user to specify an alternate syslog facility
1281 AC_ARG_WITH(syslog-facility,
1282 [ --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
1283 syslog_facility="$withval", syslog_facility="LOG_DAEMON")
1284 AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
1285 AC_SUBST(LOGFACILITY)
1287 # Check if we have getresuid and getresgid
1288 AC_CHECK_FUNCS(getresuid getresgid)
1290 # Check for gethostbyname_r in all its glorious incompatible versions.
1291 # (This logic is based on that in Python's configure.in)
1292 AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
1293 [Define this if you have any gethostbyname_r()])
1295 AC_CHECK_FUNC(gethostbyname_r, [
1296 AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
1298 CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
1299 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
1303 struct hostent *h1, *h2;
1305 (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
1307 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1308 AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
1309 [Define this if gethostbyname_r takes 6 arguments])
1318 (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
1320 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1321 AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
1322 [Define this if gethostbyname_r takes 5 arguments])
1330 struct hostent_data hd;
1331 (void) gethostbyname_r(cp1,h1,&hd);
1333 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1334 AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
1335 [Define this if gethostbyname_r takes 3 arguments])
1345 AC_CACHE_CHECK([whether the C compiler supports __func__],
1346 tor_cv_have_func_macro,
1347 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1349 int main(int c, char **v) { puts(__func__); }])],
1350 tor_cv_have_func_macro=yes,
1351 tor_cv_have_func_macro=no))
1353 AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
1354 tor_cv_have_FUNC_macro,
1355 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1357 int main(int c, char **v) { puts(__FUNC__); }])],
1358 tor_cv_have_FUNC_macro=yes,
1359 tor_cv_have_FUNC_macro=no))
1361 AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
1362 tor_cv_have_FUNCTION_macro,
1363 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1365 int main(int c, char **v) { puts(__FUNCTION__); }])],
1366 tor_cv_have_FUNCTION_macro=yes,
1367 tor_cv_have_FUNCTION_macro=no))
1369 AC_CACHE_CHECK([whether we have extern char **environ already declared],
1370 tor_cv_have_environ_declared,
1371 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1372 /* We define _GNU_SOURCE here because it is also defined in compat.c.
1373 * Without it environ doesn't get declared. */
1375 #ifdef HAVE_UNISTD_H
1379 int main(int c, char **v) { char **t = environ; }])],
1380 tor_cv_have_environ_declared=yes,
1381 tor_cv_have_environ_declared=no))
1383 if test "$tor_cv_have_func_macro" = 'yes'; then
1384 AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
1387 if test "$tor_cv_have_FUNC_macro" = 'yes'; then
1388 AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
1391 if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
1392 AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
1393 [Defined if the compiler supports __FUNCTION__])
1396 if test "$tor_cv_have_environ_declared" = 'yes'; then
1397 AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
1398 [Defined if we have extern char **environ already declared])
1401 # $prefix stores the value of the --prefix command line option, or
1402 # NONE if the option wasn't set. In the case that it wasn't set, make
1403 # it be the default, so that we can use it to expand directories now.
1404 if test "x$prefix" = "xNONE"; then
1405 prefix=$ac_default_prefix
1408 # and similarly for $exec_prefix
1409 if test "x$exec_prefix" = "xNONE"; then
1413 if test "x$BUILDDIR" = "x"; then
1417 AH_TEMPLATE([BUILDDIR],[tor's build directory])
1418 AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
1420 if test "x$CONFDIR" = "x"; then
1421 CONFDIR=`eval echo $sysconfdir/tor`
1424 AH_TEMPLATE([CONFDIR],[tor's configuration directory])
1425 AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
1427 BINDIR=`eval echo $bindir`
1429 LOCALSTATEDIR=`eval echo $localstatedir`
1430 AC_SUBST(LOCALSTATEDIR)
1432 if test "$bwin32" = true; then
1433 # Test if the linker supports the --nxcompat and --dynamicbase options
1435 save_LDFLAGS="$LDFLAGS"
1436 LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
1437 AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
1438 AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
1439 [AC_MSG_RESULT([yes])]
1440 [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
1441 [AC_MSG_RESULT([no])]
1443 LDFLAGS="$save_LDFLAGS"
1446 # Set CFLAGS _after_ all the above checks, since our warnings are stricter
1447 # than autoconf's macros like.
1448 if test "$GCC" = yes; then
1449 # Disable GCC's strict aliasing checks. They are an hours-to-debug
1450 # accident waiting to happen.
1451 CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
1453 # Autoconf sets -g -O2 by default. Override optimization level
1454 # for non-gcc compilers
1456 enable_gcc_warnings=no
1457 enable_gcc_warnings_advisory=no
1460 # OS X Lion started deprecating the system openssl. Let's just disable
1461 # all deprecation warnings on OS X. Also, to potentially make the binary
1462 # a little smaller, let's enable dead_strip.
1466 CFLAGS="$CFLAGS -Wno-deprecated-declarations"
1467 LDFLAGS="$LDFLAGS -dead_strip" ;;
1470 # Add some more warnings which we use in development but not in the
1471 # released versions. (Some relevant gcc versions can't handle these.)
1472 if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
1474 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1475 #if !defined(__GNUC__) || (__GNUC__ < 4)
1477 #endif])], have_gcc4=yes, have_gcc4=no)
1479 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1480 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
1482 #endif])], have_gcc42=yes, have_gcc42=no)
1484 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1485 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
1487 #endif])], have_gcc43=yes, have_gcc43=no)
1489 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1490 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
1492 #endif])], have_gcc46=yes, have_gcc46=no)
1495 save_CFLAGS="$CFLAGS"
1496 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1497 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
1498 have_shorten64_flag=no)
1499 CFLAGS="$save_CFLAGS"
1502 *-*-openbsd* | *-*-bitrig*)
1503 # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
1504 # That's fine, except that the headers don't pass -Wredundant-decls.
1505 # Therefore, let's disable -Wsystem-headers when we're building
1506 # with maximal warnings on OpenBSD.
1507 CFLAGS="$CFLAGS -Wno-system-headers" ;;
1510 CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
1511 CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
1512 CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
1513 CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
1514 CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
1516 if test x$enable_gcc_warnings = xyes; then
1517 CFLAGS="$CFLAGS -Werror"
1520 # Disabled, so we can use mallinfo(): -Waggregate-return
1522 if test x$have_gcc4 = xyes ; then
1523 # These warnings break gcc 3.3.5 and work on gcc 4.0.2
1524 CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement -Wold-style-definition"
1527 if test x$have_gcc42 = xyes ; then
1528 # These warnings break gcc 4.0.2 and work on gcc 4.2
1529 # XXXX020 See if any of these work with earlier versions.
1530 CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
1532 # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
1535 if test x$have_gcc42 = xyes && test x$have_clang = xno; then
1536 # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
1537 CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
1540 if test x$have_gcc43 = xyes ; then
1541 # These warnings break gcc 4.2 and work on gcc 4.3
1542 # XXXX020 See if any of these work with earlier versions.
1543 CFLAGS="$CFLAGS -Wextra -Warray-bounds"
1546 if test x$have_gcc46 = xyes ; then
1547 # This warning was added in gcc 4.3, but it appears to generate
1548 # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
1549 CFLAGS="$CFLAGS -Wlogical-op"
1552 if test x$have_shorten64_flag = xyes ; then
1553 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1558 ##This will break the world on some 64-bit architectures
1559 # CFLAGS="$CFLAGS -Winline"
1562 if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
1565 AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-profiling.])
1569 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
1574 contrib/dist/suse/tor.sh
1575 contrib/operator-tools/tor.logrotate
1578 contrib/dist/tor.service
1579 src/config/torrc.sample
1582 if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
1583 regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
1584 for file in $regular_mans ; do
1585 if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
1586 echo "==================================";
1588 echo "You need asciidoc installed to be able to build the manpage.";
1589 echo "To build without manpages, use the --disable-asciidoc argument";
1590 echo "when calling configure.";
1592 echo "==================================";
1600 if test -x /usr/bin/perl && test -x ./scripts/maint/updateVersions.pl ; then
1601 ./scripts/maint/updateVersions.pl