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],[0.2.6.5-rc])
7 AC_CONFIG_SRCDIR([src/or/main.c])
8 AC_CONFIG_MACRO_DIR([m4])
10 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
11 AC_CONFIG_HEADERS([orconfig.h])
17 if test -f /etc/redhat-release ; then
18 if test -f /usr/kerberos/include ; then
19 CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
23 # Not a no-op; we want to make sure that CPPFLAGS is set before we use
24 # the += operator on it in src/or/Makefile.am
25 CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
27 #XXXX020 We should make these enabled or not, before 0.2.0.x-final
28 AC_ARG_ENABLE(openbsd-malloc,
29 AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd. Linux only))
30 AC_ARG_ENABLE(instrument-downloads,
31 AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
32 AC_ARG_ENABLE(static-openssl,
33 AS_HELP_STRING(--enable-static-openssl, Link against a static openssl library. Requires --with-openssl-dir))
34 AC_ARG_ENABLE(static-libevent,
35 AS_HELP_STRING(--enable-static-libevent, Link against a static libevent library. Requires --with-libevent-dir))
36 AC_ARG_ENABLE(static-zlib,
37 AS_HELP_STRING(--enable-static-zlib, Link against a static zlib library. Requires --with-zlib-dir))
38 AC_ARG_ENABLE(static-tor,
39 AS_HELP_STRING(--enable-static-tor, Create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir))
40 AC_ARG_ENABLE(unittests,
41 AS_HELP_STRING(--disable-unittests, [Don't build unit tests for Tor. Risky!]))
42 AC_ARG_ENABLE(coverage,
43 AS_HELP_STRING(--enable-coverage, [Enable coverage support in the unit-test build]))
44 AC_ARG_ENABLE(system-torrc,
45 AS_HELP_STRING(--disable-system-torrc, [Don't look for a system-wide torrc file]))
47 AM_CONDITIONAL(UNITTESTS_ENABLED, test x$enable_unittests != xno)
48 AM_CONDITIONAL(COVERAGE_ENABLED, test x$enable_coverage = xyes)
50 if test "$enable_static_tor" = "yes"; then
51 enable_static_libevent="yes";
52 enable_static_openssl="yes";
53 enable_static_zlib="yes";
54 CFLAGS="$CFLAGS -static"
57 if test "$enable_system_torrc" = "no"; then
58 AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
59 [Defined if we're not going to look for a torrc in SYSCONF])
62 AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
63 if test x$enable_instrument_downloads = xyes; then
64 AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
65 [Defined if we want to keep track of how much of each kind of resource we download.])
68 AC_ARG_ENABLE(transparent,
69 AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
70 [case "${enableval}" in
71 yes) transparent=true ;;
72 no) transparent=false ;;
73 *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
74 esac], [transparent=true])
76 AC_ARG_ENABLE(asciidoc,
77 AS_HELP_STRING(--disable-asciidoc, don't use asciidoc (disables building of manpages)),
78 [case "${enableval}" in
81 *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
82 esac], [asciidoc=true])
84 # By default, we're not ready to ship a NAT-PMP aware Tor
85 AC_ARG_ENABLE(nat-pmp,
86 AS_HELP_STRING(--enable-nat-pmp, enable NAT-PMP support),
87 [case "${enableval}" in
90 * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
91 esac], [natpmp=false])
93 # By default, we're not ready to ship a UPnP aware Tor
95 AS_HELP_STRING(--enable-upnp, enable UPnP support),
96 [case "${enableval}" in
99 * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
102 # systemd notify support
103 AC_ARG_ENABLE(systemd,
104 AS_HELP_STRING(--enable-systemd, enable systemd notification support),
105 [case "${enableval}" in
108 * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
109 esac], [systemd=auto])
114 if test x$enable_systemd = xno ; then
117 PKG_CHECK_MODULES(SYSTEMD,
121 if test x$have_systemd=xno; then
122 AC_MSG_NOTICE([Okay, checking for systemd a different way...])
123 PKG_CHECK_MODULES(SYSTEMD,
130 if test x$have_systemd = xyes; then
131 AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
132 TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
133 TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
134 PKG_CHECK_MODULES(SYSTEMD209, [systemd >= 209],
135 [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
137 AC_SUBST(TOR_SYSTEMD_CFLAGS)
138 AC_SUBST(TOR_SYSTEMD_LIBS)
140 if test x$enable_systemd = xyes -a x$have_systemd != xyes ; then
141 AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
146 AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
150 AC_ARG_ENABLE(gcc-warnings,
151 AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
152 AC_ARG_ENABLE(gcc-warnings-advisory,
153 AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
155 dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
156 AC_ARG_ENABLE(gcc-hardening,
157 AS_HELP_STRING(--disable-gcc-hardening, disable compiler security checks))
159 AC_ARG_ENABLE(expensive-hardening,
160 AS_HELP_STRING(--enable-expensive-hardening, enable more expensive compiler hardening; makes Tor slower))
162 dnl Linker hardening options
163 dnl Currently these options are ELF specific - you can't use this with MacOSX
164 AC_ARG_ENABLE(linker-hardening,
165 AS_HELP_STRING(--disable-linker-hardening, disable linker security fixups))
167 AC_ARG_ENABLE(local-appdata,
168 AS_HELP_STRING(--enable-local-appdata, default to host local application data paths on Windows))
169 if test "$enable_local_appdata" = "yes"; then
170 AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
171 [Defined if we default to host local appdata paths on Windows])
175 AC_ARG_ENABLE(tor2web-mode,
176 AS_HELP_STRING(--enable-tor2web-mode, support tor2web non-anonymous mode),
177 [if test x$enableval = xyes; then
178 CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
181 AC_ARG_ENABLE(bufferevents,
182 AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))
184 AC_ARG_ENABLE(tool-name-check,
185 AS_HELP_STRING(--disable-tool-name-check, check for sanely named toolchain when cross-compiling))
187 AC_ARG_ENABLE(seccomp,
188 AS_HELP_STRING(--disable-seccomp, do not attempt to use libseccomp))
190 AC_ARG_ENABLE(libscrypt,
191 AS_HELP_STRING(--disable-libscrypt, do not attempt to use libscrypt))
193 dnl check for the correct "ar" when cross-compiling
194 AN_MAKEVAR([AR], [AC_PROG_AR])
195 AN_PROGRAM([ar], [AC_PROG_AR])
196 AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
199 dnl Check whether the above macro has settled for a simply named tool even
200 dnl though we're cross compiling. We must do this before running AC_PROG_CC,
201 dnl because that will find any cc on the system, not only the cross-compiler,
202 dnl and then verify that a binary built with this compiler runs on the
203 dnl build system. It will then come to the false conclusion that we're not
205 if test x$enable_tool_name_check != xno; then
206 if test x$ac_tool_warned = xyes; then
207 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.)])
208 elif test "x$ac_ct_AR" != x -a x$cross_compiling = xmaybe; then
209 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.)])
218 dnl autoconf 2.59 appears not to support AC_PROG_SED
219 AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
221 dnl check for asciidoc and a2x
222 AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
223 AC_PATH_PROGS([A2X], [a2x a2x.py], none)
225 AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
227 AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
228 AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
229 AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
233 AC_ARG_VAR([PYTHON], [path to Python binary])
234 AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
235 if test "x$PYTHON" = "x"; then
236 AC_MSG_WARN([Python unavailable; some tests will not be run.])
238 AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
240 ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
241 AC_C_FLEXIBLE_ARRAY_MEMBER
243 dnl Maybe we've got an old autoconf...
244 AC_CACHE_CHECK([for flexible array members],
248 struct abc { int a; char b[]; };
250 struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
253 [tor_cv_c_flexarray=yes],
254 [tor_cv_c_flexarray=no])])
255 if test $tor_cv_flexarray = yes ; then
256 AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
258 AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
262 AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
265 [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
266 [tor_cv_c_c99_decl=yes],
267 [tor_cv_c_c99_decl=no] )])
268 if test "$tor_cv_c_c99_decl" != "yes"; then
269 AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
272 AC_CACHE_CHECK([for working C99 designated initializers],
273 tor_cv_c_c99_designated_init,
275 [AC_LANG_PROGRAM([struct s { int a; int b; };],
276 [[ struct s ss = { .b = 5, .a = 6 }; ]])],
277 [tor_cv_c_c99_designated_init=yes],
278 [tor_cv_c_c99_designated_init=no] )])
280 if test "$tor_cv_c_c99_designated_init" != "yes"; then
281 AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
284 AC_PATH_PROG([SHA1SUM], [sha1sum], none)
285 AC_PATH_PROG([OPENSSL], [openssl], none)
288 AC_ARG_WITH(tor-user,
289 [ --with-tor-user=NAME Specify username for tor daemon ],
297 AC_ARG_WITH(tor-group,
298 [ --with-tor-group=NAME Specify group name for tor daemon ],
306 dnl If _WIN32 is defined and non-zero, we are building for win32
307 AC_MSG_CHECKING([for win32])
308 AC_RUN_IFELSE([AC_LANG_SOURCE([
309 int main(int c, char **v) {
320 bwin32=true; AC_MSG_RESULT([yes]),
321 bwin32=false; AC_MSG_RESULT([no]),
322 bwin32=cross; AC_MSG_RESULT([cross])
325 if test "$bwin32" = cross; then
326 AC_MSG_CHECKING([for win32 (cross)])
327 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
329 int main(int c, char **v) {return 0;}
332 int main(int c, char **v) {return x(y);}
335 bwin32=true; AC_MSG_RESULT([yes]),
336 bwin32=false; AC_MSG_RESULT([no]))
339 AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
341 dnl Enable C99 when compiling with MIPSpro
342 AC_MSG_CHECKING([for MIPSpro compiler])
343 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
344 #if (defined(__sgi) && defined(_COMPILER_VERSION))
349 bmipspro=false; AC_MSG_RESULT(no),
350 bmipspro=true; AC_MSG_RESULT(yes))
352 if test "$bmipspro" = true; then
353 CFLAGS="$CFLAGS -c99"
358 AC_SEARCH_LIBS(socket, [socket network])
359 AC_SEARCH_LIBS(gethostbyname, [nsl])
360 AC_SEARCH_LIBS(dlopen, [dl])
361 AC_SEARCH_LIBS(inet_aton, [resolv])
363 AC_SEARCH_LIBS([clock_gettime], [rt])
364 if test "$LIBS" != "$saved_LIBS"; then
365 # Looks like we need -lrt for clock_gettime().
369 AC_SEARCH_LIBS(pthread_create, [pthread])
370 AC_SEARCH_LIBS(pthread_detach, [pthread])
372 AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
373 AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
375 dnl -------------------------------------------------------------------
376 dnl Check for functions before libevent, since libevent-1.2 apparently
377 dnl exports strlcpy without defining it in a header.
383 backtrace_symbols_fd \
420 if test "$bwin32" != true; then
421 AC_CHECK_HEADERS(pthread.h)
422 AC_CHECK_FUNCS(pthread_create)
425 dnl ------------------------------------------------------
426 dnl Where do you live, libevent? And how do we call you?
428 if test "$bwin32" = true; then
429 TOR_LIB_WS32=-lws2_32
430 TOR_LIB_IPHLPAPI=-liphlpapi
431 # Some of the cargo-cults recommend -lwsock32 as well, but I don't
432 # think it's actually necessary.
438 AC_SUBST(TOR_LIB_WS32)
439 AC_SUBST(TOR_LIB_GDI)
440 AC_SUBST(TOR_LIB_IPHLPAPI)
442 dnl We need to do this before we try our disgusting hack below.
443 AC_CHECK_HEADERS([sys/types.h])
445 dnl This is a disgusting hack so we safely include older libevent headers.
446 AC_CHECK_TYPE(u_int64_t, unsigned long long)
447 AC_CHECK_TYPE(u_int32_t, unsigned long)
448 AC_CHECK_TYPE(u_int16_t, unsigned short)
449 AC_CHECK_TYPE(u_int8_t, unsigned char)
451 tor_libevent_pkg_redhat="libevent"
452 tor_libevent_pkg_debian="libevent-dev"
453 tor_libevent_devpkg_redhat="libevent-devel"
454 tor_libevent_devpkg_debian="libevent-dev"
456 dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
457 dnl linking for static builds.
458 STATIC_LIBEVENT_FLAGS=""
459 if test "$enable_static_libevent" = "yes"; then
460 if test "$have_rt" = yes; then
461 STATIC_LIBEVENT_FLAGS=" -lrt "
465 TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
467 #include <winsock2.h>
470 #include <sys/time.h>
471 #include <sys/types.h>
472 #include <event.h>], [
474 #include <winsock2.h>
476 void exit(int); void *event_init(void);],
479 {WSADATA d; WSAStartup(0x101,&d); }
481 event_init(); exit(0);
482 ], [--with-libevent-dir], [/opt/libevent])
484 dnl Now check for particular libevent functions.
486 save_LDFLAGS="$LDFLAGS"
487 save_CPPFLAGS="$CPPFLAGS"
488 LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
489 LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
490 CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
491 AC_CHECK_FUNCS([event_get_version \
492 event_get_version_number \
494 event_set_log_callback \
495 evutil_secure_rng_set_urandom_device_file \
496 evutil_secure_rng_init \
497 event_base_loopexit])
498 AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
502 AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
505 LDFLAGS="$save_LDFLAGS"
506 CPPFLAGS="$save_CPPFLAGS"
509 AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
511 if test "$enable_static_libevent" = "yes"; then
512 if test "$tor_cv_library_libevent_dir" = "(system)"; then
513 AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
515 TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
518 TOR_LIBEVENT_LIBS="-levent"
521 dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
522 dnl we can do much better.
523 if test "$enable_bufferevents" = "yes" ; then
524 if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
525 AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
528 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
530 # Check for the right version. First see if version detection works.
531 AC_MSG_CHECKING([whether we can detect the Libevent version])
532 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
533 #include <event2/event.h>
534 #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
540 ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
541 [event_version_number_works=no; AC_MSG_RESULT([no])])
542 if test "$event_version_number_works" != 'yes'; then
543 AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
545 AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
546 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
547 #include <event2/event.h>
548 #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
554 ])], [ AC_MSG_RESULT([yes]) ],
555 [ AC_MSG_RESULT([no])
556 AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
562 LDFLAGS="$save_LDFLAGS"
563 CPPFLAGS="$save_CPPFLAGS"
565 AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
566 if test "$enable_bufferevents" = "yes"; then
567 AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
568 if test "$enable_static_libevent" = "yes"; then
569 TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
571 TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
574 AC_SUBST(TOR_LIBEVENT_LIBS)
576 dnl ------------------------------------------------------
577 dnl Where do you live, libm?
579 dnl On some platforms (Haiku/BeOS) the math library is
580 dnl part of libroot. In which case don't link against lm
583 AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
584 if test "$ac_cv_search_pow" != "none required"; then
585 TOR_LIB_MATH="$ac_cv_search_pow"
588 AC_SUBST(TOR_LIB_MATH)
590 dnl ------------------------------------------------------
591 dnl Where do you live, openssl? And how do we call you?
593 tor_openssl_pkg_redhat="openssl"
594 tor_openssl_pkg_debian="libssl-dev"
595 tor_openssl_devpkg_redhat="openssl-devel"
596 tor_openssl_devpkg_debian="libssl-dev"
598 ALT_openssl_WITHVAL=""
600 [ --with-ssl-dir=PATH Obsolete alias for --with-openssl-dir ],
602 if test "x$withval" != xno && test "x$withval" != "x" ; then
603 ALT_openssl_WITHVAL="$withval"
607 TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
608 [#include <openssl/rand.h>],
609 [void RAND_add(const void *buf, int num, double entropy);],
610 [RAND_add((void*)0,0,0); exit(0);], [],
611 [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
613 dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
615 if test "$enable_static_openssl" = "yes"; then
616 if test "$tor_cv_library_openssl_dir" = "(system)"; then
617 AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
619 TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
622 TOR_OPENSSL_LIBS="-lssl -lcrypto"
624 AC_SUBST(TOR_OPENSSL_LIBS)
626 AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
627 [#include <openssl/ssl.h>
630 dnl ------------------------------------------------------
631 dnl Where do you live, zlib? And how do we call you?
633 tor_zlib_pkg_redhat="zlib"
634 tor_zlib_pkg_debian="zlib1g"
635 tor_zlib_devpkg_redhat="zlib-devel"
636 tor_zlib_devpkg_debian="zlib1g-dev"
638 TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
640 [const char * zlibVersion(void);],
641 [zlibVersion(); exit(0);], [--with-zlib-dir],
644 if test "$enable_static_zlib" = "yes"; then
645 if test "$tor_cv_library_zlib_dir" = "(system)"; then
646 AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
647 using --enable-static-zlib")
649 TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
654 AC_SUBST(TOR_ZLIB_LIBS)
656 dnl ---------------------------------------------------------------------
657 dnl Now that we know about our major libraries, we can check for compiler
658 dnl and linker hardening options. We need to do this with the libraries known,
659 dnl since sometimes the linker will like an option but not be willing to
660 dnl use it with a build of a library.
662 all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
663 all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
665 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
666 #if !defined(__clang__)
668 #endif])], have_clang=yes, have_clang=no)
670 if test x$enable_gcc_hardening != xno; then
671 CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
672 if test x$have_clang = xyes; then
673 TOR_CHECK_CFLAGS(-Qunused-arguments)
675 TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
676 AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
677 AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
678 m4_ifdef([AS_VAR_IF],[
679 AS_VAR_IF(can_compile, [yes],
680 AS_VAR_IF(can_link, [yes],
682 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.)]))
684 AS_VAR_POPDEF([can_link])
685 AS_VAR_POPDEF([can_compile])
686 TOR_CHECK_CFLAGS(-Wstack-protector)
687 TOR_CHECK_CFLAGS(-fwrapv)
688 TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
689 if test "$bwin32" = "false"; then
690 TOR_CHECK_CFLAGS(-fPIE)
691 TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
695 if test x$enable_expensive_hardening = xyes ; then
696 TOR_CHECK_CFLAGS([-fsanitize=address])
697 TOR_CHECK_CFLAGS([-fsanitize=undefined])
698 TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
701 if test x$enable_linker_hardening != xno; then
702 TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
705 # For backtrace support
706 TOR_CHECK_LDFLAGS(-rdynamic)
708 dnl ------------------------------------------------------
709 dnl Now see if we have a -fomit-frame-pointer compiler option.
711 saved_CFLAGS="$CFLAGS"
712 TOR_CHECK_CFLAGS(-fomit-frame-pointer)
713 F_OMIT_FRAME_POINTER=''
714 if test "$saved_CFLAGS" != "$CFLAGS"; then
715 if test x$enable_expensive_hardening != xyes ; then
716 F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
719 CFLAGS="$saved_CFLAGS"
720 AC_SUBST(F_OMIT_FRAME_POINTER)
722 dnl ------------------------------------------------------
723 dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
724 dnl for us, as GCC 4.6 and later do at many optimization levels), then
725 dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
727 TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
729 dnl ------------------------------------------------------
730 dnl Where do you live, libnatpmp? And how do we call you?
731 dnl There are no packages for Debian or Redhat as of this patch
733 if test "$natpmp" = "true"; then
734 AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
735 TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
736 [#include <natpmp.h>],
740 #include <natpmp.h>],
743 natpmpresp_t response;
744 r = initnatpmp(&natpmp, 0, 0);],
745 [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
747 [--with-libnatpmp-dir],
752 dnl ------------------------------------------------------
753 dnl Where do you live, libminiupnpc? And how do we call you?
754 dnl There are no packages for Debian or Redhat as of this patch
756 if test "$upnp" = "true"; then
757 AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
759 dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
760 dnl to see if we have miniupnpc-1.5 or -1.6
761 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
762 [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])
764 if test "$miniupnpc15" = "true" ; then
765 AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
766 TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
767 [#include <miniupnpc/miniwget.h>
768 #include <miniupnpc/miniupnpc.h>
769 #include <miniupnpc/upnpcommands.h>],
770 [void upnpDiscover(int delay, const char * multicastif,
771 const char * minissdpdsock, int sameport);],
772 [upnpDiscover(1, 0, 0, 0); exit(0);],
773 [--with-libminiupnpc-dir],
776 TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
777 [#include <miniupnpc/miniwget.h>
778 #include <miniupnpc/miniupnpc.h>
779 #include <miniupnpc/upnpcommands.h>],
780 [void upnpDiscover(int delay, const char * multicastif,
781 const char * minissdpdsock, int sameport, int ipv6, int * error);],
782 [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
783 [--with-libminiupnpc-dir],
788 dnl ============================================================
789 dnl Check for libseccomp
791 if test "x$enable_seccomp" != "xno"; then
792 AC_CHECK_HEADERS([seccomp.h])
793 AC_SEARCH_LIBS(seccomp_init, [seccomp])
796 dnl ============================================================
797 dnl Check for libscrypt
799 if test "x$enable_libscrypt" != "xno"; then
800 AC_CHECK_HEADERS([libscrypt.h])
801 AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
804 dnl ============================================================
805 dnl We need an implementation of curve25519.
807 dnl set these defaults.
808 build_curve25519_donna=no
809 build_curve25519_donna_c64=no
810 use_curve25519_donna=no
811 use_curve25519_nacl=no
814 dnl The best choice is using curve25519-donna-c64, but that requires
816 AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
817 tor_cv_can_use_curve25519_donna_c64,
819 [AC_LANG_PROGRAM([dnl
821 typedef unsigned uint128_t __attribute__((mode(TI)));
822 int func(uint64_t a, uint64_t b) {
823 uint128_t c = ((uint128_t)a) * b;
824 int ok = ((uint64_t)(c>>96)) == 522859 &&
825 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
826 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
827 (((uint64_t)(c))&0xffffffffL) == 0;
831 int ok = func( ((uint64_t)2000000000) * 1000000000,
832 ((uint64_t)1234567890) << 24);
835 [tor_cv_can_use_curve25519_donna_c64=yes],
836 [tor_cv_can_use_curve25519_donna_c64=no],
838 [AC_LANG_PROGRAM([dnl
840 typedef unsigned uint128_t __attribute__((mode(TI)));
841 int func(uint64_t a, uint64_t b) {
842 uint128_t c = ((uint128_t)a) * b;
843 int ok = ((uint64_t)(c>>96)) == 522859 &&
844 (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
845 (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
846 (((uint64_t)(c))&0xffffffffL) == 0;
850 int ok = func( ((uint64_t)2000000000) * 1000000000,
851 ((uint64_t)1234567890) << 24);
854 [tor_cv_can_use_curve25519_donna_c64=cross],
855 [tor_cv_can_use_curve25519_donna_c64=no])])])
857 AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
858 nacl/crypto_scalarmult_curve25519.h])
860 AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
861 tor_cv_can_use_curve25519_nacl,
862 [tor_saved_LIBS="$LIBS"
865 [AC_LANG_PROGRAM([dnl
866 #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
867 #include <crypto_scalarmult_curve25519.h>
868 #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
869 #include <nacl/crypto_scalarmult_curve25519.h>
871 #ifdef crypto_scalarmult_curve25519_ref_BYTES
872 #error Hey, this is the reference implementation! That's not fast.
875 unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
876 ])], [tor_cv_can_use_curve25519_nacl=yes],
877 [tor_cv_can_use_curve25519_nacl=no])
878 LIBS="$tor_saved_LIBS" ])
880 dnl Okay, now we need to figure out which one to actually use. Fall back
881 dnl to curve25519-donna.c
883 if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
884 build_curve25519_donna_c64=yes
885 use_curve25519_donna=yes
886 elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
887 use_curve25519_nacl=yes
888 CURVE25519_LIBS=-lnacl
890 build_curve25519_donna=yes
891 use_curve25519_donna=yes
894 if test x$use_curve25519_donna = xyes; then
895 AC_DEFINE(USE_CURVE25519_DONNA, 1,
896 [Defined if we should use an internal curve25519_donna{,_c64} implementation])
898 if test x$use_curve25519_nacl = xyes; then
899 AC_DEFINE(USE_CURVE25519_NACL, 1,
900 [Defined if we should use a curve25519 from nacl])
902 AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
903 AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
904 AC_SUBST(CURVE25519_LIBS)
906 dnl Make sure to enable support for large off_t if available.
921 , , AC_MSG_WARN(Some headers were not found, compilation may fail. If compilation succeeds, please send your orconfig.h to the developers so we can fix this warning.))
923 dnl These headers are not essential
964 AC_CHECK_HEADERS(sys/param.h)
966 AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
967 [#ifdef HAVE_SYS_TYPES_H
968 #include <sys/types.h>
970 #ifdef HAVE_SYS_SOCKET_H
971 #include <sys/socket.h>
973 AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
974 [#ifdef HAVE_SYS_TYPES_H
975 #include <sys/types.h>
977 #ifdef HAVE_SYS_SOCKET_H
978 #include <sys/socket.h>
984 AC_CHECK_HEADERS(linux/if.h,[],[],
986 #ifdef HAVE_SYS_SOCKET_H
987 #include <sys/socket.h>
991 AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
992 linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
993 [#ifdef HAVE_SYS_TYPES_H
994 #include <sys/types.h>
996 #ifdef HAVE_SYS_SOCKET_H
997 #include <sys/socket.h>
1002 #ifdef HAVE_LINUX_TYPES_H
1003 #include <linux/types.h>
1005 #ifdef HAVE_NETINET_IN6_H
1006 #include <netinet/in6.h>
1008 #ifdef HAVE_NETINET_IN_H
1009 #include <netinet/in.h>
1012 AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
1013 linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
1014 [#ifdef HAVE_SYS_TYPES_H
1015 #include <sys/types.h>
1017 #ifdef HAVE_SYS_SOCKET_H
1018 #include <sys/socket.h>
1020 #ifdef HAVE_LIMITS_H
1023 #ifdef HAVE_LINUX_TYPES_H
1024 #include <linux/types.h>
1026 #ifdef HAVE_NETINET_IN6_H
1027 #include <netinet/in6.h>
1029 #ifdef HAVE_NETINET_IN_H
1030 #include <netinet/in.h>
1032 #ifdef HAVE_LINUX_IF_H
1033 #include <linux/if.h>
1036 if test x$transparent = xtrue ; then
1038 if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
1041 if test x$linux_netfilter_ipv4 = x1 ; then
1044 if test x$linux_netfilter_ipv6_ip6_tables = x1 ; then
1047 if test x$transparent_ok = x1 ; then
1048 AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
1050 *-*-openbsd* | *-*-bitrig*)
1051 AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
1054 AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
1058 AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
1059 [#ifdef HAVE_SYS_TYPES_H
1060 #include <sys/types.h>
1062 #ifdef HAVE_SYS_TIME_H
1063 #include <sys/time.h>
1066 dnl In case we aren't given a working stdint.h, we'll need to grow our own.
1069 AC_CHECK_SIZEOF(int8_t)
1070 AC_CHECK_SIZEOF(int16_t)
1071 AC_CHECK_SIZEOF(int32_t)
1072 AC_CHECK_SIZEOF(int64_t)
1073 AC_CHECK_SIZEOF(uint8_t)
1074 AC_CHECK_SIZEOF(uint16_t)
1075 AC_CHECK_SIZEOF(uint32_t)
1076 AC_CHECK_SIZEOF(uint64_t)
1077 AC_CHECK_SIZEOF(intptr_t)
1078 AC_CHECK_SIZEOF(uintptr_t)
1080 dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
1082 AC_CHECK_SIZEOF(char)
1083 AC_CHECK_SIZEOF(short)
1084 AC_CHECK_SIZEOF(int)
1085 AC_CHECK_SIZEOF(long)
1086 AC_CHECK_SIZEOF(long long)
1087 AC_CHECK_SIZEOF(__int64)
1088 AC_CHECK_SIZEOF(void *)
1089 AC_CHECK_SIZEOF(time_t)
1090 AC_CHECK_SIZEOF(size_t)
1091 AC_CHECK_SIZEOF(pid_t)
1093 AC_CHECK_TYPES([uint, u_char, ssize_t])
1095 AC_PC_FROM_UCONTEXT([/bin/true])
1097 dnl used to include sockaddr_storage, but everybody has that.
1098 AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
1099 [#ifdef HAVE_SYS_TYPES_H
1100 #include <sys/types.h>
1102 #ifdef HAVE_NETINET_IN_H
1103 #include <netinet/in.h>
1105 #ifdef HAVE_NETINET_IN6_H
1106 #include <netinet/in6.h>
1108 #ifdef HAVE_SYS_SOCKET_H
1109 #include <sys/socket.h>
1112 #define _WIN32_WINNT 0x0501
1113 #define WIN32_LEAN_AND_MEAN
1114 #if defined(_MSC_VER) && (_MSC_VER < 1300)
1115 #include <winsock.h>
1117 #include <winsock2.h>
1118 #include <ws2tcpip.h>
1122 AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
1123 [#ifdef HAVE_SYS_TYPES_H
1124 #include <sys/types.h>
1126 #ifdef HAVE_NETINET_IN_H
1127 #include <netinet/in.h>
1129 #ifdef HAVE_NETINET_IN6_H
1130 #include <netinet/in6.h>
1132 #ifdef HAVE_SYS_SOCKET_H
1133 #include <sys/socket.h>
1136 #define _WIN32_WINNT 0x0501
1137 #define WIN32_LEAN_AND_MEAN
1138 #if defined(_MSC_VER) && (_MSC_VER < 1300)
1139 #include <winsock.h>
1141 #include <winsock2.h>
1142 #include <ws2tcpip.h>
1147 AC_CHECK_TYPES([rlim_t], , ,
1148 [#ifdef HAVE_SYS_TYPES_H
1149 #include <sys/types.h>
1151 #ifdef HAVE_SYS_TIME_H
1152 #include <sys/time.h>
1154 #ifdef HAVE_SYS_RESOURCE_H
1155 #include <sys/resource.h>
1159 AX_CHECK_SIGN([time_t],
1160 [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
1162 #ifdef HAVE_SYS_TYPES_H
1163 #include <sys/types.h>
1165 #ifdef HAVE_SYS_TIME_H
1166 #include <sys/time.h>
1173 if test "$ax_cv_decl_time_t_signed" = no; then
1174 AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
1177 AX_CHECK_SIGN([size_t],
1178 [ tor_cv_size_t_signed=yes ],
1179 [ tor_cv_size_t_signed=no ], [
1180 #ifdef HAVE_SYS_TYPES_H
1181 #include <sys/types.h>
1185 if test "$ax_cv_decl_size_t_signed" = yes; then
1186 AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
1189 AX_CHECK_SIGN([enum always],
1190 [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
1192 enum always { AAA, BBB, CCC };
1195 AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
1196 #ifdef HAVE_SYS_SOCKET_H
1197 #include <sys/socket.h>
1201 # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
1203 AC_CHECK_SIZEOF(cell_t)
1205 # Now make sure that NULL can be represented as zero bytes.
1206 AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
1207 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1208 [[#include <stdlib.h>
1211 #ifdef HAVE_STDDEF_H
1214 int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
1215 return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
1216 [tor_cv_null_is_zero=yes],
1217 [tor_cv_null_is_zero=no],
1218 [tor_cv_null_is_zero=cross])])
1220 if test "$tor_cv_null_is_zero" = cross ; then
1221 # Cross-compiling; let's hope that the target isn't raving mad.
1222 AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
1225 if test "$tor_cv_null_is_zero" != no; then
1226 AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
1227 [Define to 1 iff memset(0) sets pointers to NULL])
1230 AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
1231 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1232 [[#include <stdlib.h>
1235 #ifdef HAVE_STDDEF_H
1238 int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
1239 return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
1240 [tor_cv_dbl0_is_zero=yes],
1241 [tor_cv_dbl0_is_zero=no],
1242 [tor_cv_dbl0_is_zero=cross])])
1244 if test "$tor_cv_dbl0_is_zero" = cross ; then
1245 # Cross-compiling; let's hope that the target isn't raving mad.
1246 AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
1249 if test "$tor_cv_dbl0_is_zero" != no; then
1250 AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
1251 [Define to 1 iff memset(0) sets doubles to 0.0])
1254 # And what happens when we malloc zero?
1255 AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
1256 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1257 [[#include <stdlib.h>
1260 #ifdef HAVE_STDDEF_H
1263 int main () { return malloc(0)?0:1; }]])],
1264 [tor_cv_malloc_zero_works=yes],
1265 [tor_cv_malloc_zero_works=no],
1266 [tor_cv_malloc_zero_works=cross])])
1268 if test "$tor_cv_malloc_zero_works" = cross; then
1269 # Cross-compiling; let's hope that the target isn't raving mad.
1270 AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
1273 if test "$tor_cv_malloc_zero_works" = yes; then
1274 AC_DEFINE([MALLOC_ZERO_WORKS], 1,
1275 [Define to 1 iff malloc(0) returns a pointer])
1278 # whether we seem to be in a 2s-complement world.
1279 AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
1280 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1281 [[int main () { int problem = ((-99) != (~99)+1);
1282 return problem ? 1 : 0; }]])],
1283 [tor_cv_twos_complement=yes],
1284 [tor_cv_twos_complement=no],
1285 [tor_cv_twos_complement=cross])])
1287 if test "$tor_cv_twos_complement" = cross ; then
1288 # Cross-compiling; let's hope that the target isn't raving mad.
1289 AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
1292 if test "$tor_cv_twos_complement" != no ; then
1293 AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
1294 [Define to 1 iff we represent negative integers with two's complement])
1297 # What does shifting a negative value do?
1298 AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
1299 [AC_RUN_IFELSE([AC_LANG_SOURCE(
1300 [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
1301 [tor_cv_sign_extend=yes],
1302 [tor_cv_sign_extend=no],
1303 [tor_cv_sign_extend=cross])])
1305 if test "$tor_cv_sign_extend" = cross ; then
1306 # Cross-compiling; let's hope that the target isn't raving mad.
1307 AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
1310 if test "$tor_cv_sign_extend" != no ; then
1311 AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
1312 [Define to 1 iff right-shifting a negative value performs sign-extension])
1315 # Whether we should use the dmalloc memory allocation debugging library.
1316 AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
1317 AC_ARG_WITH(dmalloc,
1318 [ --with-dmalloc Use debug memory allocation library. ],
1319 [if [[ "$withval" = "yes" ]]; then
1325 fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
1328 if [[ $dmalloc -eq 1 ]]; then
1329 AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
1330 AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
1331 AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
1332 AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
1335 AC_ARG_WITH(tcmalloc,
1336 [ --with-tcmalloc Use tcmalloc memory allocation library. ],
1337 [ tcmalloc=yes ], [ tcmalloc=no ])
1339 if test x$tcmalloc = xyes ; then
1340 LDFLAGS="-ltcmalloc $LDFLAGS"
1343 using_custom_malloc=no
1344 if test x$enable_openbsd_malloc = xyes ; then
1345 using_custom_malloc=yes
1347 if test x$tcmalloc = xyes ; then
1348 using_custom_malloc=yes
1350 if test $using_custom_malloc = no ; then
1351 AC_CHECK_FUNCS(mallinfo)
1354 # By default, we're going to assume we don't have mlockall()
1355 # bionic and other platforms have various broken mlockall subsystems.
1356 # Some systems don't have a working mlockall, some aren't linkable,
1357 # and some have it but don't declare it.
1358 AC_CHECK_FUNCS(mlockall)
1359 AC_CHECK_DECLS([mlockall], , , [
1360 #ifdef HAVE_SYS_MMAN_H
1361 #include <sys/mman.h>
1364 # Allow user to specify an alternate syslog facility
1365 AC_ARG_WITH(syslog-facility,
1366 [ --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
1367 syslog_facility="$withval", syslog_facility="LOG_DAEMON")
1368 AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
1369 AC_SUBST(LOGFACILITY)
1371 # Check if we have getresuid and getresgid
1372 AC_CHECK_FUNCS(getresuid getresgid)
1374 # Check for gethostbyname_r in all its glorious incompatible versions.
1375 # (This logic is based on that in Python's configure.in)
1376 AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
1377 [Define this if you have any gethostbyname_r()])
1379 AC_CHECK_FUNC(gethostbyname_r, [
1380 AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
1382 CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
1383 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
1387 struct hostent *h1, *h2;
1389 (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
1391 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1392 AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
1393 [Define this if gethostbyname_r takes 6 arguments])
1402 (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
1404 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1405 AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
1406 [Define this if gethostbyname_r takes 5 arguments])
1414 struct hostent_data hd;
1415 (void) gethostbyname_r(cp1,h1,&hd);
1417 AC_DEFINE(HAVE_GETHOSTBYNAME_R)
1418 AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
1419 [Define this if gethostbyname_r takes 3 arguments])
1429 AC_CACHE_CHECK([whether the C compiler supports __func__],
1430 tor_cv_have_func_macro,
1431 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1433 int main(int c, char **v) { puts(__func__); }])],
1434 tor_cv_have_func_macro=yes,
1435 tor_cv_have_func_macro=no))
1437 AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
1438 tor_cv_have_FUNC_macro,
1439 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1441 int main(int c, char **v) { puts(__FUNC__); }])],
1442 tor_cv_have_FUNC_macro=yes,
1443 tor_cv_have_FUNC_macro=no))
1445 AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
1446 tor_cv_have_FUNCTION_macro,
1447 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1449 int main(int c, char **v) { puts(__FUNCTION__); }])],
1450 tor_cv_have_FUNCTION_macro=yes,
1451 tor_cv_have_FUNCTION_macro=no))
1453 AC_CACHE_CHECK([whether we have extern char **environ already declared],
1454 tor_cv_have_environ_declared,
1455 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1456 /* We define _GNU_SOURCE here because it is also defined in compat.c.
1457 * Without it environ doesn't get declared. */
1459 #ifdef HAVE_UNISTD_H
1463 int main(int c, char **v) { char **t = environ; }])],
1464 tor_cv_have_environ_declared=yes,
1465 tor_cv_have_environ_declared=no))
1467 if test "$tor_cv_have_func_macro" = 'yes'; then
1468 AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
1471 if test "$tor_cv_have_FUNC_macro" = 'yes'; then
1472 AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
1475 if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
1476 AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
1477 [Defined if the compiler supports __FUNCTION__])
1480 if test "$tor_cv_have_environ_declared" = 'yes'; then
1481 AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
1482 [Defined if we have extern char **environ already declared])
1485 # $prefix stores the value of the --prefix command line option, or
1486 # NONE if the option wasn't set. In the case that it wasn't set, make
1487 # it be the default, so that we can use it to expand directories now.
1488 if test "x$prefix" = "xNONE"; then
1489 prefix=$ac_default_prefix
1492 # and similarly for $exec_prefix
1493 if test "x$exec_prefix" = "xNONE"; then
1497 if test "x$BUILDDIR" = "x"; then
1501 AH_TEMPLATE([BUILDDIR],[tor's build directory])
1502 AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
1504 if test "x$CONFDIR" = "x"; then
1505 CONFDIR=`eval echo $sysconfdir/tor`
1508 AH_TEMPLATE([CONFDIR],[tor's configuration directory])
1509 AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
1511 BINDIR=`eval echo $bindir`
1513 LOCALSTATEDIR=`eval echo $localstatedir`
1514 AC_SUBST(LOCALSTATEDIR)
1516 if test "$bwin32" = true; then
1517 # Test if the linker supports the --nxcompat and --dynamicbase options
1519 save_LDFLAGS="$LDFLAGS"
1520 LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
1521 AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
1522 AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
1523 [AC_MSG_RESULT([yes])]
1524 [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
1525 [AC_MSG_RESULT([no])]
1527 LDFLAGS="$save_LDFLAGS"
1530 # Set CFLAGS _after_ all the above checks, since our warnings are stricter
1531 # than autoconf's macros like.
1532 if test "$GCC" = yes; then
1533 # Disable GCC's strict aliasing checks. They are an hours-to-debug
1534 # accident waiting to happen.
1535 CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
1537 # Override optimization level for non-gcc compilers
1539 enable_gcc_warnings=no
1540 enable_gcc_warnings_advisory=no
1543 # OS X Lion started deprecating the system openssl. Let's just disable
1544 # all deprecation warnings on OS X. Also, to potentially make the binary
1545 # a little smaller, let's enable dead_strip.
1549 CFLAGS="$CFLAGS -Wno-deprecated-declarations"
1550 LDFLAGS="$LDFLAGS -dead_strip" ;;
1553 # Add some more warnings which we use in development but not in the
1554 # released versions. (Some relevant gcc versions can't handle these.)
1555 if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
1557 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1558 #if !defined(__GNUC__) || (__GNUC__ < 4)
1560 #endif])], have_gcc4=yes, have_gcc4=no)
1562 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1563 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
1565 #endif])], have_gcc42=yes, have_gcc42=no)
1567 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1568 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
1570 #endif])], have_gcc43=yes, have_gcc43=no)
1572 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
1573 #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
1575 #endif])], have_gcc46=yes, have_gcc46=no)
1578 save_CFLAGS="$CFLAGS"
1579 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1580 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
1581 have_shorten64_flag=no)
1582 CFLAGS="$save_CFLAGS"
1585 *-*-openbsd* | *-*-bitrig*)
1586 # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
1587 # That's fine, except that the headers don't pass -Wredundant-decls.
1588 # Therefore, let's disable -Wsystem-headers when we're building
1589 # with maximal warnings on OpenBSD.
1590 CFLAGS="$CFLAGS -Wno-system-headers" ;;
1593 CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
1594 CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
1595 CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
1596 CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
1597 CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
1599 if test x$enable_gcc_warnings = xyes; then
1600 CFLAGS="$CFLAGS -Werror"
1603 # Disabled, so we can use mallinfo(): -Waggregate-return
1605 if test x$have_gcc4 = xyes ; then
1606 # These warnings break gcc 3.3.5 and work on gcc 4.0.2
1607 CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wold-style-definition"
1610 if test x$have_gcc42 = xyes ; then
1611 # These warnings break gcc 4.0.2 and work on gcc 4.2
1612 # XXXX020 See if any of these work with earlier versions.
1613 CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
1615 # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
1618 if test x$have_gcc42 = xyes && test x$have_clang = xno; then
1619 # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
1620 CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
1623 if test x$have_gcc43 = xyes ; then
1624 # These warnings break gcc 4.2 and work on gcc 4.3
1625 # XXXX020 See if any of these work with earlier versions.
1626 CFLAGS="$CFLAGS -Wextra -Warray-bounds"
1629 if test x$have_gcc46 = xyes ; then
1630 # This warning was added in gcc 4.3, but it appears to generate
1631 # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
1632 CFLAGS="$CFLAGS -Wlogical-op"
1635 if test x$have_shorten64_flag = xyes ; then
1636 CFLAGS="$CFLAGS -Wshorten-64-to-32"
1641 ##This will break the world on some 64-bit architectures
1642 # CFLAGS="$CFLAGS -Winline"
1645 if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
1648 AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-profiling.])
1652 CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
1657 contrib/dist/suse/tor.sh
1658 contrib/operator-tools/tor.logrotate
1661 contrib/dist/tor.service
1662 src/config/torrc.sample
1663 src/config/torrc.minimal
1666 if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
1667 regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
1668 for file in $regular_mans ; do
1669 if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
1670 echo "==================================";
1672 echo "Building Tor has failed since manpages cannot be built.";
1674 echo "You need asciidoc installed to be able to build the manpages.";
1675 echo "To build without manpages, use the --disable-asciidoc argument";
1676 echo "when calling configure.";
1678 echo "==================================";
1686 if test -x /usr/bin/perl && test -x ./scripts/maint/updateVersions.pl ; then
1687 ./scripts/maint/updateVersions.pl