configure.ac 47 KB

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  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
  5. AC_INIT([tor],[0.2.5.0-alpha-dev])
  6. AC_CONFIG_SRCDIR([src/or/main.c])
  7. AC_CONFIG_MACRO_DIR([m4])
  8. AM_INIT_AUTOMAKE
  9. m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
  10. AC_CONFIG_HEADERS([orconfig.h])
  11. AC_CANONICAL_HOST
  12. if test -f /etc/redhat-release ; then
  13. if test -f /usr/kerberos/include ; then
  14. CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
  15. fi
  16. fi
  17. # Not a no-op; we want to make sure that CPPFLAGS is set before we use
  18. # the += operator on it in src/or/Makefile.am
  19. CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
  20. #XXXX020 We should make these enabled or not, before 0.2.0.x-final
  21. AC_ARG_ENABLE(buf-freelists,
  22. AS_HELP_STRING(--disable-buf-freelists, disable freelists for buffer RAM))
  23. AC_ARG_ENABLE(openbsd-malloc,
  24. AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd. Linux only))
  25. AC_ARG_ENABLE(instrument-downloads,
  26. AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
  27. AC_ARG_ENABLE(static-openssl,
  28. AS_HELP_STRING(--enable-static-openssl, Link against a static openssl library. Requires --with-openssl-dir))
  29. AC_ARG_ENABLE(static-libevent,
  30. AS_HELP_STRING(--enable-static-libevent, Link against a static libevent library. Requires --with-libevent-dir))
  31. AC_ARG_ENABLE(static-zlib,
  32. AS_HELP_STRING(--enable-static-zlib, Link against a static zlib library. Requires --with-zlib-dir))
  33. AC_ARG_ENABLE(static-tor,
  34. AS_HELP_STRING(--enable-static-tor, Create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir))
  35. AC_ARG_ENABLE(curve25519,
  36. AS_HELP_STRING(--disable-curve25519, Build Tor with no curve25519 elliptic-curve crypto support))
  37. AC_ARG_ENABLE(unittests,
  38. AS_HELP_STRING(--disable-unittests, [Don't build unit tests for Tor. Risky!]))
  39. AC_ARG_ENABLE(coverage,
  40. AS_HELP_STRING(--enable-coverage, [Enable coverage support in the unit-test build]))
  41. AM_CONDITIONAL(UNITTESTS_ENABLED, test x$enable_unittests != xno)
  42. AM_CONDITIONAL(COVERAGE_ENABLED, test x$enable_coverage = xyes)
  43. if test "$enable_static_tor" = "yes"; then
  44. enable_static_libevent="yes";
  45. enable_static_openssl="yes";
  46. enable_static_zlib="yes";
  47. CFLAGS="$CFLAGS -static"
  48. fi
  49. if test x$enable_buf_freelists != xno; then
  50. AC_DEFINE(ENABLE_BUF_FREELISTS, 1,
  51. [Defined if we try to use freelists for buffer RAM chunks])
  52. fi
  53. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
  54. if test x$enable_instrument_downloads = xyes; then
  55. AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
  56. [Defined if we want to keep track of how much of each kind of resource we download.])
  57. fi
  58. AC_ARG_ENABLE(transparent,
  59. AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
  60. [case "${enableval}" in
  61. yes) transparent=true ;;
  62. no) transparent=false ;;
  63. *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
  64. esac], [transparent=true])
  65. AC_ARG_ENABLE(asciidoc,
  66. AS_HELP_STRING(--disable-asciidoc, don't use asciidoc (disables building of manpages)),
  67. [case "${enableval}" in
  68. yes) asciidoc=true ;;
  69. no) asciidoc=false ;;
  70. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  71. esac], [asciidoc=true])
  72. # By default, we're not ready to ship a NAT-PMP aware Tor
  73. AC_ARG_ENABLE(nat-pmp,
  74. AS_HELP_STRING(--enable-nat-pmp, enable NAT-PMP support),
  75. [case "${enableval}" in
  76. yes) natpmp=true ;;
  77. no) natpmp=false ;;
  78. * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
  79. esac], [natpmp=false])
  80. # By default, we're not ready to ship a UPnP aware Tor
  81. AC_ARG_ENABLE(upnp,
  82. AS_HELP_STRING(--enable-upnp, enable UPnP support),
  83. [case "${enableval}" in
  84. yes) upnp=true ;;
  85. no) upnp=false ;;
  86. * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
  87. esac], [upnp=false])
  88. AC_ARG_ENABLE(threads,
  89. AS_HELP_STRING(--disable-threads, disable multi-threading support))
  90. if test x$enable_threads = x; then
  91. case $host in
  92. *-*-solaris* )
  93. # Don't try multithreading on solaris -- cpuworkers seem to lock.
  94. AC_MSG_NOTICE([You are running Solaris; Sometimes threading makes
  95. cpu workers lock up here, so I will disable threads.])
  96. enable_threads="no";;
  97. *)
  98. enable_threads="yes";;
  99. esac
  100. fi
  101. if test "$enable_threads" = "yes"; then
  102. AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
  103. fi
  104. case $host in
  105. *-*-solaris* )
  106. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  107. ;;
  108. esac
  109. AC_ARG_ENABLE(gcc-warnings,
  110. AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
  111. AC_ARG_ENABLE(gcc-warnings-advisory,
  112. AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
  113. dnl Adam shostack suggests the following for Windows:
  114. dnl -D_FORTIFY_SOURCE=2 -fstack-protector-all
  115. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  116. dnl This requires that we use gcc and that we add -O2 to the CFLAGS.
  117. AC_ARG_ENABLE(gcc-hardening,
  118. AS_HELP_STRING(--disable-gcc-hardening, disable compiler security checks))
  119. dnl Linker hardening options
  120. dnl Currently these options are ELF specific - you can't use this with MacOSX
  121. AC_ARG_ENABLE(linker-hardening,
  122. AS_HELP_STRING(--disable-linker-hardening, disable linker security fixups))
  123. AC_ARG_ENABLE(local-appdata,
  124. AS_HELP_STRING(--enable-local-appdata, default to host local application data paths on Windows))
  125. if test "$enable_local_appdata" = "yes"; then
  126. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  127. [Defined if we default to host local appdata paths on Windows])
  128. fi
  129. # Tor2web mode flag
  130. AC_ARG_ENABLE(tor2web-mode,
  131. AS_HELP_STRING(--enable-tor2web-mode, support tor2web non-anonymous mode),
  132. [if test x$enableval = xyes; then
  133. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  134. fi])
  135. AC_ARG_ENABLE(bufferevents,
  136. AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))
  137. dnl check for the correct "ar" when cross-compiling
  138. AN_MAKEVAR([AR], [AC_PROG_AR])
  139. AN_PROGRAM([ar], [AC_PROG_AR])
  140. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
  141. AC_PROG_AR
  142. AC_PROG_CC
  143. AC_PROG_CPP
  144. AC_PROG_MAKE_SET
  145. AC_PROG_RANLIB
  146. dnl autoconf 2.59 appears not to support AC_PROG_SED
  147. AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
  148. dnl check for asciidoc and a2x
  149. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  150. AC_PATH_PROG([A2X], [a2x], none)
  151. AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
  152. AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
  153. AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
  154. AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
  155. AM_PROG_CC_C_O
  156. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  157. AC_C_FLEXIBLE_ARRAY_MEMBER
  158. ], [
  159. dnl Maybe we've got an old autoconf...
  160. AC_CACHE_CHECK([for flexible array members],
  161. tor_cv_c_flexarray,
  162. [AC_COMPILE_IFELSE(
  163. AC_LANG_PROGRAM([
  164. struct abc { int a; char b[]; };
  165. ], [
  166. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  167. def->b[0] = 33;
  168. ]),
  169. [tor_cv_c_flexarray=yes],
  170. [tor_cv_c_flexarray=no])])
  171. if test $tor_cv_flexarray = yes ; then
  172. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  173. else
  174. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  175. fi
  176. ])
  177. AC_PATH_PROG([SHA1SUM], [sha1sum], none)
  178. AC_PATH_PROG([OPENSSL], [openssl], none)
  179. TORUSER=_tor
  180. AC_ARG_WITH(tor-user,
  181. [ --with-tor-user=NAME Specify username for tor daemon ],
  182. [
  183. TORUSER=$withval
  184. ]
  185. )
  186. AC_SUBST(TORUSER)
  187. TORGROUP=_tor
  188. AC_ARG_WITH(tor-group,
  189. [ --with-tor-group=NAME Specify group name for tor daemon ],
  190. [
  191. TORGROUP=$withval
  192. ]
  193. )
  194. AC_SUBST(TORGROUP)
  195. dnl If _WIN32 is defined and non-zero, we are building for win32
  196. AC_MSG_CHECKING([for win32])
  197. AC_RUN_IFELSE([AC_LANG_SOURCE([
  198. int main(int c, char **v) {
  199. #ifdef _WIN32
  200. #if _WIN32
  201. return 0;
  202. #else
  203. return 1;
  204. #endif
  205. #else
  206. return 2;
  207. #endif
  208. }])],
  209. bwin32=true; AC_MSG_RESULT([yes]),
  210. bwin32=false; AC_MSG_RESULT([no]),
  211. bwin32=cross; AC_MSG_RESULT([cross])
  212. )
  213. if test "$bwin32" = cross; then
  214. AC_MSG_CHECKING([for win32 (cross)])
  215. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  216. #ifdef _WIN32
  217. int main(int c, char **v) {return 0;}
  218. #else
  219. #error
  220. int main(int c, char **v) {return x(y);}
  221. #endif
  222. ])],
  223. bwin32=true; AC_MSG_RESULT([yes]),
  224. bwin32=false; AC_MSG_RESULT([no]))
  225. fi
  226. AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
  227. dnl Enable C99 when compiling with MIPSpro
  228. AC_MSG_CHECKING([for MIPSpro compiler])
  229. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  230. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  231. #error
  232. return x(y);
  233. #endif
  234. ])],
  235. bmipspro=false; AC_MSG_RESULT(no),
  236. bmipspro=true; AC_MSG_RESULT(yes))
  237. if test "$bmipspro" = true; then
  238. CFLAGS="$CFLAGS -c99"
  239. fi
  240. AC_C_BIGENDIAN
  241. AC_SEARCH_LIBS(socket, [socket network])
  242. AC_SEARCH_LIBS(gethostbyname, [nsl])
  243. AC_SEARCH_LIBS(dlopen, [dl])
  244. AC_SEARCH_LIBS(inet_aton, [resolv])
  245. saved_LIBS="$LIBS"
  246. AC_SEARCH_LIBS([clock_gettime], [rt])
  247. if test "$LIBS" != "$saved_LIBS"; then
  248. # Looks like we need -lrt for clock_gettime().
  249. have_rt=yes
  250. fi
  251. if test "$enable_threads" = "yes"; then
  252. AC_SEARCH_LIBS(pthread_create, [pthread])
  253. AC_SEARCH_LIBS(pthread_detach, [pthread])
  254. fi
  255. dnl -------------------------------------------------------------------
  256. dnl Check for functions before libevent, since libevent-1.2 apparently
  257. dnl exports strlcpy without defining it in a header.
  258. AC_CHECK_FUNCS(
  259. _NSGetEnviron \
  260. accept4 \
  261. clock_gettime \
  262. flock \
  263. ftime \
  264. getaddrinfo \
  265. getifaddrs \
  266. getrlimit \
  267. gettimeofday \
  268. gmtime_r \
  269. inet_aton \
  270. ioctl \
  271. issetugid \
  272. llround \
  273. localtime_r \
  274. lround \
  275. memmem \
  276. prctl \
  277. rint \
  278. socketpair \
  279. strlcat \
  280. strlcpy \
  281. strptime \
  282. strtok_r \
  283. strtoull \
  284. sysconf \
  285. uname \
  286. vasprintf \
  287. _vscprintf
  288. )
  289. if test "$enable_threads" = "yes"; then
  290. AC_CHECK_HEADERS(pthread.h)
  291. AC_CHECK_FUNCS(pthread_create)
  292. fi
  293. dnl ------------------------------------------------------
  294. dnl Where do you live, libevent? And how do we call you?
  295. if test "$bwin32" = true; then
  296. TOR_LIB_WS32=-lws2_32
  297. TOR_LIB_IPHLPAPI=-liphlpapi
  298. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  299. # think it's actually necessary.
  300. TOR_LIB_GDI=-lgdi32
  301. else
  302. TOR_LIB_WS32=
  303. TOR_LIB_GDI=
  304. fi
  305. AC_SUBST(TOR_LIB_WS32)
  306. AC_SUBST(TOR_LIB_GDI)
  307. AC_SUBST(TOR_LIB_IPHLPAPI)
  308. dnl We need to do this before we try our disgusting hack below.
  309. AC_CHECK_HEADERS([sys/types.h])
  310. dnl This is a disgusting hack so we safely include older libevent headers.
  311. AC_CHECK_TYPE(u_int64_t, unsigned long long)
  312. AC_CHECK_TYPE(u_int32_t, unsigned long)
  313. AC_CHECK_TYPE(u_int16_t, unsigned short)
  314. AC_CHECK_TYPE(u_int8_t, unsigned char)
  315. tor_libevent_pkg_redhat="libevent"
  316. tor_libevent_pkg_debian="libevent-dev"
  317. tor_libevent_devpkg_redhat="libevent-devel"
  318. tor_libevent_devpkg_debian="libevent-dev"
  319. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  320. dnl linking for static builds.
  321. STATIC_LIBEVENT_FLAGS=""
  322. if test "$enable_static_libevent" = "yes"; then
  323. if test "$have_rt" = yes; then
  324. STATIC_LIBEVENT_FLAGS=" -lrt "
  325. fi
  326. fi
  327. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  328. #ifdef _WIN32
  329. #include <winsock2.h>
  330. #endif
  331. #include <stdlib.h>
  332. #include <sys/time.h>
  333. #include <sys/types.h>
  334. #include <event.h>], [
  335. #ifdef _WIN32
  336. #include <winsock2.h>
  337. #endif
  338. void exit(int); void *event_init(void);],
  339. [
  340. #ifdef _WIN32
  341. {WSADATA d; WSAStartup(0x101,&d); }
  342. #endif
  343. event_init(); exit(0);
  344. ], [--with-libevent-dir], [/opt/libevent])
  345. dnl Now check for particular libevent functions.
  346. save_LIBS="$LIBS"
  347. save_LDFLAGS="$LDFLAGS"
  348. save_CPPFLAGS="$CPPFLAGS"
  349. LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
  350. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  351. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  352. AC_CHECK_FUNCS(event_get_version event_get_version_number event_get_method event_set_log_callback evdns_set_outgoing_bind_address event_base_loopexit)
  353. AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
  354. [#include <event.h>
  355. ])
  356. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  357. LIBS="$save_LIBS"
  358. LDFLAGS="$save_LDFLAGS"
  359. CPPFLAGS="$save_CPPFLAGS"
  360. AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
  361. if test "$enable_static_libevent" = "yes"; then
  362. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  363. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  364. else
  365. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  366. fi
  367. else
  368. TOR_LIBEVENT_LIBS="-levent"
  369. fi
  370. dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
  371. dnl we can do much better.
  372. if test "$enable_bufferevents" = "yes" ; then
  373. if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
  374. AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
  375. else
  376. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  377. # Check for the right version. First see if version detection works.
  378. AC_MSG_CHECKING([whether we can detect the Libevent version])
  379. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  380. #include <event2/event.h>
  381. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
  382. #error
  383. int x = y(zz);
  384. #else
  385. int x = 1;
  386. #endif
  387. ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
  388. [event_version_number_works=no; AC_MSG_RESULT([no])])
  389. if test "$event_version_number_works" != 'yes'; then
  390. AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
  391. else
  392. AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
  393. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  394. #include <event2/event.h>
  395. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
  396. #error
  397. int x = y(zz);
  398. #else
  399. int x = 1;
  400. #endif
  401. ])], [ AC_MSG_RESULT([yes]) ],
  402. [ AC_MSG_RESULT([no])
  403. AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
  404. fi
  405. fi
  406. fi
  407. LIBS="$save_LIBS"
  408. LDFLAGS="$save_LDFLAGS"
  409. CPPFLAGS="$save_CPPFLAGS"
  410. AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
  411. if test "$enable_bufferevents" = "yes"; then
  412. AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
  413. if test "$enable_static_libevent" = "yes"; then
  414. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
  415. else
  416. TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
  417. fi
  418. fi
  419. AC_SUBST(TOR_LIBEVENT_LIBS)
  420. dnl ------------------------------------------------------
  421. dnl Where do you live, libm?
  422. dnl On some platforms (Haiku/BeOS) the math library is
  423. dnl part of libroot. In which case don't link against lm
  424. TOR_LIB_MATH=""
  425. save_LIBS="$LIBS"
  426. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  427. if test "$ac_cv_search_pow" != "none required"; then
  428. TOR_LIB_MATH="$ac_cv_search_pow"
  429. fi
  430. LIBS="$save_LIBS"
  431. AC_SUBST(TOR_LIB_MATH)
  432. dnl ------------------------------------------------------
  433. dnl Where do you live, openssl? And how do we call you?
  434. tor_openssl_pkg_redhat="openssl"
  435. tor_openssl_pkg_debian="libssl-dev"
  436. tor_openssl_devpkg_redhat="openssl-devel"
  437. tor_openssl_devpkg_debian="libssl-dev"
  438. ALT_openssl_WITHVAL=""
  439. AC_ARG_WITH(ssl-dir,
  440. [ --with-ssl-dir=PATH Obsolete alias for --with-openssl-dir ],
  441. [
  442. if test "x$withval" != xno && test "x$withval" != "x" ; then
  443. ALT_openssl_WITHVAL="$withval"
  444. fi
  445. ])
  446. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
  447. [#include <openssl/rand.h>],
  448. [void RAND_add(const void *buf, int num, double entropy);],
  449. [RAND_add((void*)0,0,0); exit(0);], [],
  450. [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
  451. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  452. if test "$enable_static_openssl" = "yes"; then
  453. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  454. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  455. else
  456. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  457. fi
  458. else
  459. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  460. fi
  461. AC_SUBST(TOR_OPENSSL_LIBS)
  462. dnl ------------------------------------------------------
  463. dnl Where do you live, zlib? And how do we call you?
  464. tor_zlib_pkg_redhat="zlib"
  465. tor_zlib_pkg_debian="zlib1g"
  466. tor_zlib_devpkg_redhat="zlib-devel"
  467. tor_zlib_devpkg_debian="zlib1g-dev"
  468. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  469. [#include <zlib.h>],
  470. [const char * zlibVersion(void);],
  471. [zlibVersion(); exit(0);], [--with-zlib-dir],
  472. [/opt/zlib])
  473. if test "$enable_static_zlib" = "yes"; then
  474. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  475. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  476. using --enable-static-zlib")
  477. else
  478. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  479. fi
  480. else
  481. TOR_ZLIB_LIBS="-lz"
  482. fi
  483. AC_SUBST(TOR_ZLIB_LIBS)
  484. dnl ---------------------------------------------------------------------
  485. dnl Now that we know about our major libraries, we can check for compiler
  486. dnl and linker hardening options. We need to do this with the libraries known,
  487. dnl since sometimes the linker will like an option but not be willing to
  488. dnl use it with a build of a library.
  489. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  490. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
  491. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  492. #if !defined(__clang__)
  493. #error
  494. #endif])], have_clang=yes, have_clang=no)
  495. if test x$enable_gcc_hardening != xno; then
  496. CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
  497. if test x$have_clang = xyes; then
  498. TOR_CHECK_CFLAGS(-Qunused-arguments)
  499. fi
  500. TOR_CHECK_CFLAGS(-fstack-protector-all)
  501. TOR_CHECK_CFLAGS(-Wstack-protector)
  502. TOR_CHECK_CFLAGS(-fwrapv)
  503. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  504. if test "$bwin32" = "false"; then
  505. TOR_CHECK_CFLAGS(-fPIE)
  506. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  507. fi
  508. fi
  509. if test x$enable_linker_hardening != xno; then
  510. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  511. fi
  512. dnl ------------------------------------------------------
  513. dnl Now see if we have a -fomit-frame-pointer compiler option.
  514. saved_CFLAGS="$CFLAGS"
  515. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  516. if test "$saved_CFLAGS" != "$CFLAGS"; then
  517. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  518. else
  519. F_OMIT_FRAME_POINTER=''
  520. fi
  521. CFLAGS="$saved_CFLAGS"
  522. AC_SUBST(F_OMIT_FRAME_POINTER)
  523. dnl ------------------------------------------------------
  524. dnl Where do you live, libnatpmp? And how do we call you?
  525. dnl There are no packages for Debian or Redhat as of this patch
  526. if test "$natpmp" = "true"; then
  527. AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
  528. TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  529. [#include <natpmp.h>],
  530. [#ifdef _WIN32
  531. #define STATICLIB
  532. #endif
  533. #include <natpmp.h>],
  534. [ int r;
  535. natpmp_t natpmp;
  536. natpmpresp_t response;
  537. r = initnatpmp(&natpmp, 0, 0);],
  538. [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
  539. exit(0);],
  540. [--with-libnatpmp-dir],
  541. [/usr/lib/])
  542. fi
  543. dnl ------------------------------------------------------
  544. dnl Where do you live, libminiupnpc? And how do we call you?
  545. dnl There are no packages for Debian or Redhat as of this patch
  546. if test "$upnp" = "true"; then
  547. AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
  548. dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
  549. dnl to see if we have miniupnpc-1.5 or -1.6
  550. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
  551. [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])
  552. if test "$miniupnpc15" = "true" ; then
  553. AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
  554. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  555. [#include <miniupnpc/miniwget.h>
  556. #include <miniupnpc/miniupnpc.h>
  557. #include <miniupnpc/upnpcommands.h>],
  558. [void upnpDiscover(int delay, const char * multicastif,
  559. const char * minissdpdsock, int sameport);],
  560. [upnpDiscover(1, 0, 0, 0); exit(0);],
  561. [--with-libminiupnpc-dir],
  562. [/usr/lib/])
  563. else
  564. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  565. [#include <miniupnpc/miniwget.h>
  566. #include <miniupnpc/miniupnpc.h>
  567. #include <miniupnpc/upnpcommands.h>],
  568. [void upnpDiscover(int delay, const char * multicastif,
  569. const char * minissdpdsock, int sameport, int ipv6, int * error);],
  570. [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
  571. [--with-libminiupnpc-dir],
  572. [/usr/lib/])
  573. fi
  574. fi
  575. dnl ============================================================
  576. dnl Check for libseccomp
  577. AC_CHECK_HEADERS([seccomp.h])
  578. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  579. dnl ============================================================
  580. dnl We need an implementation of curve25519.
  581. dnl set these defaults.
  582. have_a_curve25519=no
  583. build_curve25519_donna=no
  584. build_curve25519_donna_c64=no
  585. use_curve25519_donna=no
  586. use_curve25519_nacl=no
  587. CURVE25519_LIBS=
  588. if test x$enable_curve25519 != xno; then
  589. dnl The best choice is using curve25519-donna-c64, but that requires
  590. dnl that we
  591. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  592. tor_cv_can_use_curve25519_donna_c64,
  593. [AC_RUN_IFELSE(
  594. [AC_LANG_PROGRAM([dnl
  595. #include <stdint.h>
  596. typedef unsigned uint128_t __attribute__((mode(TI)));
  597. int func(uint64_t a, uint64_t b) {
  598. uint128_t c = ((uint128_t)a) * b;
  599. int ok = ((uint64_t)(c>>96)) == 522859 &&
  600. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  601. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  602. (((uint64_t)(c))&0xffffffffL) == 0;
  603. return ok;
  604. }
  605. ], [dnl
  606. int ok = func( ((uint64_t)2000000000) * 1000000000,
  607. ((uint64_t)1234567890) << 24);
  608. return !ok;
  609. ])],
  610. [tor_cv_can_use_curve25519_donna_c64=yes],
  611. [tor_cv_can_use_curve25519_donna_c64=no],
  612. [AC_COMPILE_IFELSE(
  613. [AC_LANG_PROGRAM([dnl
  614. #include <stdint.h>
  615. typedef unsigned uint128_t __attribute__((mode(TI)));
  616. int func(uint64_t a, uint64_t b) {
  617. uint128_t c = ((uint128_t)a) * b;
  618. int ok = ((uint64_t)(c>>96)) == 522859 &&
  619. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  620. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  621. (((uint64_t)(c))&0xffffffffL) == 0;
  622. return ok;
  623. }
  624. ], [dnl
  625. int ok = func( ((uint64_t)2000000000) * 1000000000,
  626. ((uint64_t)1234567890) << 24);
  627. return !ok;
  628. ])],
  629. [tor_cv_can_use_curve25519_donna_c64=cross],
  630. [tor_cv_can_use_curve25519_donna_c64=no])])])
  631. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  632. nacl/crypto_scalarmult_curve25519.h])
  633. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  634. tor_cv_can_use_curve25519_nacl,
  635. [tor_saved_LIBS="$LIBS"
  636. LIBS="$LIBS -lnacl"
  637. AC_LINK_IFELSE(
  638. [AC_LANG_PROGRAM([dnl
  639. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  640. #include <crypto_scalarmult_curve25519.h>
  641. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  642. #include <nacl/crypto_scalarmult_curve25519.h>
  643. #endif
  644. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  645. #error Hey, this is the reference implementation! That's not fast.
  646. #endif
  647. ], [
  648. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  649. ])], [tor_cv_can_use_curve25519_nacl=yes],
  650. [tor_cv_can_use_curve25519_nacl=no])
  651. LIBS="$tor_saved_LIBS" ])
  652. dnl Okay, now we need to figure out which one to actually use. Fall back
  653. dnl to curve25519-donna.c
  654. if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
  655. build_curve25519_donna_c64=yes
  656. use_curve25519_donna=yes
  657. elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
  658. use_curve25519_nacl=yes
  659. CURVE25519_LIBS=-lnacl
  660. else
  661. build_curve25519_donna=yes
  662. use_curve25519_donna=yes
  663. fi
  664. have_a_curve25519=yes
  665. fi
  666. if test x$have_a_curve25519 = xyes; then
  667. AC_DEFINE(CURVE25519_ENABLED, 1,
  668. [Defined if we have a curve25519 implementation])
  669. fi
  670. if test x$use_curve25519_donna = xyes; then
  671. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  672. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  673. fi
  674. if test x$use_curve25519_nacl = xyes; then
  675. AC_DEFINE(USE_CURVE25519_NACL, 1,
  676. [Defined if we should use a curve25519 from nacl])
  677. fi
  678. AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
  679. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
  680. AM_CONDITIONAL(CURVE25519_ENABLED, test x$have_a_curve25519 = xyes)
  681. AC_SUBST(CURVE25519_LIBS)
  682. dnl Make sure to enable support for large off_t if available.
  683. AC_SYS_LARGEFILE
  684. AC_CHECK_HEADERS(
  685. assert.h \
  686. errno.h \
  687. fcntl.h \
  688. signal.h \
  689. string.h \
  690. sys/fcntl.h \
  691. sys/stat.h \
  692. sys/time.h \
  693. sys/types.h \
  694. time.h \
  695. unistd.h
  696. , , 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.))
  697. dnl These headers are not essential
  698. AC_CHECK_HEADERS(
  699. arpa/inet.h \
  700. crt_externs.h \
  701. grp.h \
  702. ifaddrs.h \
  703. inttypes.h \
  704. limits.h \
  705. linux/types.h \
  706. machine/limits.h \
  707. malloc.h \
  708. malloc/malloc.h \
  709. malloc_np.h \
  710. netdb.h \
  711. netinet/in.h \
  712. netinet/in6.h \
  713. pwd.h \
  714. stdint.h \
  715. sys/file.h \
  716. sys/ioctl.h \
  717. sys/limits.h \
  718. sys/mman.h \
  719. sys/param.h \
  720. sys/prctl.h \
  721. sys/resource.h \
  722. sys/socket.h \
  723. sys/syslimits.h \
  724. sys/time.h \
  725. sys/types.h \
  726. sys/un.h \
  727. sys/utime.h \
  728. sys/wait.h \
  729. syslog.h \
  730. utime.h
  731. )
  732. AC_CHECK_HEADERS(sys/param.h)
  733. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  734. [#ifdef HAVE_SYS_TYPES_H
  735. #include <sys/types.h>
  736. #endif
  737. #ifdef HAVE_SYS_SOCKET_H
  738. #include <sys/socket.h>
  739. #endif])
  740. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  741. [#ifdef HAVE_SYS_TYPES_H
  742. #include <sys/types.h>
  743. #endif
  744. #ifdef HAVE_SYS_SOCKET_H
  745. #include <sys/socket.h>
  746. #endif
  747. #ifdef HAVE_NET_IF_H
  748. #include <net/if.h>
  749. #endif])
  750. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  751. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  752. [#ifdef HAVE_SYS_TYPES_H
  753. #include <sys/types.h>
  754. #endif
  755. #ifdef HAVE_SYS_SOCKET_H
  756. #include <sys/socket.h>
  757. #endif
  758. #ifdef HAVE_LIMITS_H
  759. #include <limits.h>
  760. #endif
  761. #ifdef HAVE_LINUX_TYPES_H
  762. #include <linux/types.h>
  763. #endif
  764. #ifdef HAVE_NETINET_IN6_H
  765. #include <netinet/in6.h>
  766. #endif
  767. #ifdef HAVE_NETINET_IN_H
  768. #include <netinet/in.h>
  769. #endif])
  770. if test x$transparent = xtrue ; then
  771. transparent_ok=0
  772. if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
  773. transparent_ok=1
  774. fi
  775. if test x$linux_netfilter_ipv4 = x1 ; then
  776. transparent_ok=1
  777. fi
  778. if test x$transparent_ok = x1 ; then
  779. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  780. case $host in
  781. *-*-openbsd* | *-*-bitrig*)
  782. AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
  783. esac
  784. else
  785. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  786. fi
  787. fi
  788. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  789. [#ifdef HAVE_SYS_TYPES_H
  790. #include <sys/types.h>
  791. #endif
  792. #ifdef HAVE_SYS_TIME_H
  793. #include <sys/time.h>
  794. #endif])
  795. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  796. dnl Watch out.
  797. AC_CHECK_SIZEOF(int8_t)
  798. AC_CHECK_SIZEOF(int16_t)
  799. AC_CHECK_SIZEOF(int32_t)
  800. AC_CHECK_SIZEOF(int64_t)
  801. AC_CHECK_SIZEOF(uint8_t)
  802. AC_CHECK_SIZEOF(uint16_t)
  803. AC_CHECK_SIZEOF(uint32_t)
  804. AC_CHECK_SIZEOF(uint64_t)
  805. AC_CHECK_SIZEOF(intptr_t)
  806. AC_CHECK_SIZEOF(uintptr_t)
  807. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  808. AC_CHECK_SIZEOF(char)
  809. AC_CHECK_SIZEOF(short)
  810. AC_CHECK_SIZEOF(int)
  811. AC_CHECK_SIZEOF(long)
  812. AC_CHECK_SIZEOF(long long)
  813. AC_CHECK_SIZEOF(__int64)
  814. AC_CHECK_SIZEOF(void *)
  815. AC_CHECK_SIZEOF(time_t)
  816. AC_CHECK_SIZEOF(size_t)
  817. AC_CHECK_SIZEOF(pid_t)
  818. AC_CHECK_TYPES([uint, u_char, ssize_t])
  819. dnl used to include sockaddr_storage, but everybody has that.
  820. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  821. [#ifdef HAVE_SYS_TYPES_H
  822. #include <sys/types.h>
  823. #endif
  824. #ifdef HAVE_NETINET_IN_H
  825. #include <netinet/in.h>
  826. #endif
  827. #ifdef HAVE_NETINET_IN6_H
  828. #include <netinet/in6.h>
  829. #endif
  830. #ifdef HAVE_SYS_SOCKET_H
  831. #include <sys/socket.h>
  832. #endif
  833. #ifdef _WIN32
  834. #define _WIN32_WINNT 0x0501
  835. #define WIN32_LEAN_AND_MEAN
  836. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  837. #include <winsock.h>
  838. #else
  839. #include <winsock2.h>
  840. #include <ws2tcpip.h>
  841. #endif
  842. #endif
  843. ])
  844. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  845. [#ifdef HAVE_SYS_TYPES_H
  846. #include <sys/types.h>
  847. #endif
  848. #ifdef HAVE_NETINET_IN_H
  849. #include <netinet/in.h>
  850. #endif
  851. #ifdef HAVE_NETINET_IN6_H
  852. #include <netinet/in6.h>
  853. #endif
  854. #ifdef HAVE_SYS_SOCKET_H
  855. #include <sys/socket.h>
  856. #endif
  857. #ifdef _WIN32
  858. #define _WIN32_WINNT 0x0501
  859. #define WIN32_LEAN_AND_MEAN
  860. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  861. #include <winsock.h>
  862. #else
  863. #include <winsock2.h>
  864. #include <ws2tcpip.h>
  865. #endif
  866. #endif
  867. ])
  868. AC_CHECK_TYPES([rlim_t], , ,
  869. [#ifdef HAVE_SYS_TYPES_H
  870. #include <sys/types.h>
  871. #endif
  872. #ifdef HAVE_SYS_TIME_H
  873. #include <sys/time.h>
  874. #endif
  875. #ifdef HAVE_SYS_RESOURCE_H
  876. #include <sys/resource.h>
  877. #endif
  878. ])
  879. AX_CHECK_SIGN([time_t],
  880. [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
  881. [ : ], [
  882. #ifdef HAVE_SYS_TYPES_H
  883. #include <sys/types.h>
  884. #endif
  885. #ifdef HAVE_SYS_TIME_H
  886. #include <sys/time.h>
  887. #endif
  888. #ifdef HAVE_TIME_H
  889. #include <time.h>
  890. #endif
  891. ])
  892. if test "$ax_cv_decl_time_t_signed" = no; then
  893. AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
  894. fi
  895. AX_CHECK_SIGN([size_t],
  896. [ tor_cv_size_t_signed=yes ],
  897. [ tor_cv_size_t_signed=no ], [
  898. #ifdef HAVE_SYS_TYPES_H
  899. #include <sys/types.h>
  900. #endif
  901. ])
  902. if test "$ax_cv_decl_size_t_signed" = yes; then
  903. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  904. fi
  905. AX_CHECK_SIGN([enum always],
  906. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  907. [ : ], [
  908. enum always { AAA, BBB, CCC };
  909. ])
  910. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  911. #ifdef HAVE_SYS_SOCKET_H
  912. #include <sys/socket.h>
  913. #endif
  914. ])
  915. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  916. AC_CHECK_SIZEOF(cell_t)
  917. # Now make sure that NULL can be represented as zero bytes.
  918. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  919. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  920. [[#include <stdlib.h>
  921. #include <string.h>
  922. #include <stdio.h>
  923. #ifdef HAVE_STDDEF_H
  924. #include <stddef.h>
  925. #endif
  926. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  927. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  928. [tor_cv_null_is_zero=yes],
  929. [tor_cv_null_is_zero=no],
  930. [tor_cv_null_is_zero=cross])])
  931. if test "$tor_cv_null_is_zero" = cross ; then
  932. # Cross-compiling; let's hope that the target isn't raving mad.
  933. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  934. fi
  935. if test "$tor_cv_null_is_zero" != no; then
  936. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  937. [Define to 1 iff memset(0) sets pointers to NULL])
  938. fi
  939. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  940. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  941. [[#include <stdlib.h>
  942. #include <string.h>
  943. #include <stdio.h>
  944. #ifdef HAVE_STDDEF_H
  945. #include <stddef.h>
  946. #endif
  947. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  948. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  949. [tor_cv_dbl0_is_zero=yes],
  950. [tor_cv_dbl0_is_zero=no],
  951. [tor_cv_dbl0_is_zero=cross])])
  952. if test "$tor_cv_dbl0_is_zero" = cross ; then
  953. # Cross-compiling; let's hope that the target isn't raving mad.
  954. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  955. fi
  956. if test "$tor_cv_dbl0_is_zero" != no; then
  957. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  958. [Define to 1 iff memset(0) sets doubles to 0.0])
  959. fi
  960. # And what happens when we malloc zero?
  961. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  962. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  963. [[#include <stdlib.h>
  964. #include <string.h>
  965. #include <stdio.h>
  966. #ifdef HAVE_STDDEF_H
  967. #include <stddef.h>
  968. #endif
  969. int main () { return malloc(0)?0:1; }]])],
  970. [tor_cv_malloc_zero_works=yes],
  971. [tor_cv_malloc_zero_works=no],
  972. [tor_cv_malloc_zero_works=cross])])
  973. if test "$tor_cv_malloc_zero_works" = cross; then
  974. # Cross-compiling; let's hope that the target isn't raving mad.
  975. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  976. fi
  977. if test "$tor_cv_malloc_zero_works" = yes; then
  978. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  979. [Define to 1 iff malloc(0) returns a pointer])
  980. fi
  981. # whether we seem to be in a 2s-complement world.
  982. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  983. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  984. [[int main () { int problem = ((-99) != (~99)+1);
  985. return problem ? 1 : 0; }]])],
  986. [tor_cv_twos_complement=yes],
  987. [tor_cv_twos_complement=no],
  988. [tor_cv_twos_complement=cross])])
  989. if test "$tor_cv_twos_complement" = cross ; then
  990. # Cross-compiling; let's hope that the target isn't raving mad.
  991. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  992. fi
  993. if test "$tor_cv_twos_complement" != no ; then
  994. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  995. [Define to 1 iff we represent negative integers with two's complement])
  996. fi
  997. # What does shifting a negative value do?
  998. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  999. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1000. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1001. [tor_cv_sign_extend=yes],
  1002. [tor_cv_sign_extend=no],
  1003. [tor_cv_sign_extend=cross])])
  1004. if test "$tor_cv_sign_extend" = cross ; then
  1005. # Cross-compiling; let's hope that the target isn't raving mad.
  1006. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1007. fi
  1008. if test "$tor_cv_sign_extend" != no ; then
  1009. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1010. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1011. fi
  1012. # Whether we should use the dmalloc memory allocation debugging library.
  1013. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1014. AC_ARG_WITH(dmalloc,
  1015. [ --with-dmalloc Use debug memory allocation library. ],
  1016. [if [[ "$withval" = "yes" ]]; then
  1017. dmalloc=1
  1018. AC_MSG_RESULT(yes)
  1019. else
  1020. dmalloc=1
  1021. AC_MSG_RESULT(no)
  1022. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1023. )
  1024. if [[ $dmalloc -eq 1 ]]; then
  1025. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1026. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1027. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1028. AC_DEFINE(DMALLOC_FUNC_CHECK, 1, [Enable dmalloc's malloc function check])
  1029. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1030. fi
  1031. AC_ARG_WITH(tcmalloc,
  1032. [ --with-tcmalloc Use tcmalloc memory allocation library. ],
  1033. [ tcmalloc=yes ], [ tcmalloc=no ])
  1034. if test x$tcmalloc = xyes ; then
  1035. LDFLAGS="-ltcmalloc $LDFLAGS"
  1036. fi
  1037. using_custom_malloc=no
  1038. if test x$enable_openbsd_malloc = xyes ; then
  1039. using_custom_malloc=yes
  1040. fi
  1041. if test x$tcmalloc = xyes ; then
  1042. using_custom_malloc=yes
  1043. fi
  1044. if test $using_custom_malloc = no ; then
  1045. AC_CHECK_FUNCS(mallinfo)
  1046. fi
  1047. # By default, we're going to assume we don't have mlockall()
  1048. # bionic and other platforms have various broken mlockall subsystems.
  1049. # Some systems don't have a working mlockall, some aren't linkable,
  1050. # and some have it but don't declare it.
  1051. AC_CHECK_FUNCS(mlockall)
  1052. AC_CHECK_DECLS([mlockall], , , [
  1053. #ifdef HAVE_SYS_MMAN_H
  1054. #include <sys/mman.h>
  1055. #endif])
  1056. # Allow user to specify an alternate syslog facility
  1057. AC_ARG_WITH(syslog-facility,
  1058. [ --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
  1059. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1060. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1061. AC_SUBST(LOGFACILITY)
  1062. # Check if we have getresuid and getresgid
  1063. AC_CHECK_FUNCS(getresuid getresgid)
  1064. # Check for gethostbyname_r in all its glorious incompatible versions.
  1065. # (This logic is based on that in Python's configure.in)
  1066. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1067. [Define this if you have any gethostbyname_r()])
  1068. AC_CHECK_FUNC(gethostbyname_r, [
  1069. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1070. OLD_CFLAGS=$CFLAGS
  1071. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1072. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
  1073. #include <netdb.h>
  1074. ], [[
  1075. char *cp1, *cp2;
  1076. struct hostent *h1, *h2;
  1077. int i1, i2;
  1078. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1079. ]])],[
  1080. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1081. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1082. [Define this if gethostbyname_r takes 6 arguments])
  1083. AC_MSG_RESULT(6)
  1084. ], [
  1085. AC_TRY_COMPILE([
  1086. #include <netdb.h>
  1087. ], [
  1088. char *cp1, *cp2;
  1089. struct hostent *h1;
  1090. int i1, i2;
  1091. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1092. ], [
  1093. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1094. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1095. [Define this if gethostbyname_r takes 5 arguments])
  1096. AC_MSG_RESULT(5)
  1097. ], [
  1098. AC_TRY_COMPILE([
  1099. #include <netdb.h>
  1100. ], [
  1101. char *cp1;
  1102. struct hostent *h1;
  1103. struct hostent_data hd;
  1104. (void) gethostbyname_r(cp1,h1,&hd);
  1105. ], [
  1106. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1107. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1108. [Define this if gethostbyname_r takes 3 arguments])
  1109. AC_MSG_RESULT(3)
  1110. ], [
  1111. AC_MSG_RESULT(0)
  1112. ])
  1113. ])
  1114. ])
  1115. CFLAGS=$OLD_CFLAGS
  1116. ])
  1117. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1118. tor_cv_have_func_macro,
  1119. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1120. #include <stdio.h>
  1121. int main(int c, char **v) { puts(__func__); }])],
  1122. tor_cv_have_func_macro=yes,
  1123. tor_cv_have_func_macro=no))
  1124. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1125. tor_cv_have_FUNC_macro,
  1126. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1127. #include <stdio.h>
  1128. int main(int c, char **v) { puts(__FUNC__); }])],
  1129. tor_cv_have_FUNC_macro=yes,
  1130. tor_cv_have_FUNC_macro=no))
  1131. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1132. tor_cv_have_FUNCTION_macro,
  1133. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1134. #include <stdio.h>
  1135. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1136. tor_cv_have_FUNCTION_macro=yes,
  1137. tor_cv_have_FUNCTION_macro=no))
  1138. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1139. tor_cv_have_environ_declared,
  1140. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1141. /* We define _GNU_SOURCE here because it is also defined in compat.c.
  1142. * Without it environ doesn't get declared. */
  1143. #define _GNU_SOURCE
  1144. #ifdef HAVE_UNISTD_H
  1145. #include <unistd.h>
  1146. #endif
  1147. #include <stdlib.h>
  1148. int main(int c, char **v) { char **t = environ; }])],
  1149. tor_cv_have_environ_declared=yes,
  1150. tor_cv_have_environ_declared=no))
  1151. if test "$tor_cv_have_func_macro" = 'yes'; then
  1152. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1153. fi
  1154. if test "$tor_cv_have_FUNC_macro" = 'yes'; then
  1155. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1156. fi
  1157. if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
  1158. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1159. [Defined if the compiler supports __FUNCTION__])
  1160. fi
  1161. if test "$tor_cv_have_environ_declared" = 'yes'; then
  1162. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1163. [Defined if we have extern char **environ already declared])
  1164. fi
  1165. # $prefix stores the value of the --prefix command line option, or
  1166. # NONE if the option wasn't set. In the case that it wasn't set, make
  1167. # it be the default, so that we can use it to expand directories now.
  1168. if test "x$prefix" = "xNONE"; then
  1169. prefix=$ac_default_prefix
  1170. fi
  1171. # and similarly for $exec_prefix
  1172. if test "x$exec_prefix" = "xNONE"; then
  1173. exec_prefix=$prefix
  1174. fi
  1175. if test "x$BUILDDIR" = "x"; then
  1176. BUILDDIR=`pwd`
  1177. fi
  1178. AC_SUBST(BUILDDIR)
  1179. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1180. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1181. if test "x$CONFDIR" = "x"; then
  1182. CONFDIR=`eval echo $sysconfdir/tor`
  1183. fi
  1184. AC_SUBST(CONFDIR)
  1185. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1186. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1187. BINDIR=`eval echo $bindir`
  1188. AC_SUBST(BINDIR)
  1189. LOCALSTATEDIR=`eval echo $localstatedir`
  1190. AC_SUBST(LOCALSTATEDIR)
  1191. if test "$bwin32" = true; then
  1192. # Test if the linker supports the --nxcompat and --dynamicbase options
  1193. # for Windows
  1194. save_LDFLAGS="$LDFLAGS"
  1195. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1196. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1197. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1198. [AC_MSG_RESULT([yes])]
  1199. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1200. [AC_MSG_RESULT([no])]
  1201. )
  1202. LDFLAGS="$save_LDFLAGS"
  1203. fi
  1204. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1205. # than autoconf's macros like.
  1206. if test "$GCC" = yes; then
  1207. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1208. # accident waiting to happen.
  1209. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1210. else
  1211. # Autoconf sets -g -O2 by default. Override optimization level
  1212. # for non-gcc compilers
  1213. CFLAGS="$CFLAGS -O"
  1214. enable_gcc_warnings=no
  1215. enable_gcc_warnings_advisory=no
  1216. fi
  1217. # OS X Lion started deprecating the system openssl. Let's just disable
  1218. # all deprecation warnings on OS X. Also, to potentially make the binary
  1219. # a little smaller, let's enable dead_strip.
  1220. case "$host_os" in
  1221. darwin*)
  1222. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1223. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1224. esac
  1225. # Add some more warnings which we use in development but not in the
  1226. # released versions. (Some relevant gcc versions can't handle these.)
  1227. if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
  1228. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1229. #if !defined(__GNUC__) || (__GNUC__ < 4)
  1230. #error
  1231. #endif])], have_gcc4=yes, have_gcc4=no)
  1232. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1233. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
  1234. #error
  1235. #endif])], have_gcc42=yes, have_gcc42=no)
  1236. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1237. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
  1238. #error
  1239. #endif])], have_gcc43=yes, have_gcc43=no)
  1240. save_CFLAGS="$CFLAGS"
  1241. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1242. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
  1243. have_shorten64_flag=no)
  1244. CFLAGS="$save_CFLAGS"
  1245. case $host in
  1246. *-*-openbsd* | *-*-bitrig*)
  1247. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1248. # That's fine, except that the headers don't pass -Wredundant-decls.
  1249. # Therefore, let's disable -Wsystem-headers when we're building
  1250. # with maximal warnings on OpenBSD.
  1251. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1252. esac
  1253. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1254. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1255. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1256. CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
  1257. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1258. if test x$enable_gcc_warnings = xyes; then
  1259. CFLAGS="$CFLAGS -Werror"
  1260. fi
  1261. # Disabled, so we can use mallinfo(): -Waggregate-return
  1262. if test x$have_gcc4 = xyes ; then
  1263. # These warnings break gcc 3.3.5 and work on gcc 4.0.2
  1264. CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement -Wold-style-definition"
  1265. fi
  1266. if test x$have_gcc42 = xyes ; then
  1267. # These warnings break gcc 4.0.2 and work on gcc 4.2
  1268. # XXXX020 See if any of these work with earlier versions.
  1269. CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
  1270. # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
  1271. fi
  1272. if test x$have_gcc42 = xyes && test x$have_clang = xno; then
  1273. # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
  1274. CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
  1275. fi
  1276. if test x$have_gcc43 = xyes ; then
  1277. # These warnings break gcc 4.2 and work on gcc 4.3
  1278. # XXXX020 See if any of these work with earlier versions.
  1279. CFLAGS="$CFLAGS -Wextra -Warray-bounds"
  1280. fi
  1281. if test x$have_shorten64_flag = xyes ; then
  1282. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1283. fi
  1284. ##This will break the world on some 64-bit architectures
  1285. # CFLAGS="$CFLAGS -Winline"
  1286. fi
  1287. if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
  1288. case "$host_os" in
  1289. darwin*)
  1290. 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.])
  1291. esac
  1292. fi
  1293. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  1294. AC_CONFIG_FILES([
  1295. Doxyfile
  1296. Makefile
  1297. contrib/suse/tor.sh
  1298. contrib/tor.logrotate
  1299. contrib/tor.sh
  1300. contrib/torctl
  1301. contrib/torify
  1302. src/config/torrc.sample
  1303. ])
  1304. if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
  1305. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  1306. for file in $regular_mans ; do
  1307. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  1308. echo "==================================";
  1309. echo;
  1310. echo "You need asciidoc installed to be able to build the manpage.";
  1311. echo "To build without manpages, use the --disable-asciidoc argument";
  1312. echo "when calling configure.";
  1313. echo;
  1314. echo "==================================";
  1315. exit 1;
  1316. fi
  1317. done
  1318. fi
  1319. AC_OUTPUT
  1320. if test -x /usr/bin/perl && test -x ./contrib/updateVersions.pl ; then
  1321. ./contrib/updateVersions.pl
  1322. fi