configure.ac 53 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) 2007-2014, The Tor Project, Inc.
  4. dnl See LICENSE for licensing information
  5. AC_INIT([tor],[0.2.6.2-alpha])
  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. PKG_PROG_PKG_CONFIG
  13. if test -f /etc/redhat-release ; then
  14. if test -f /usr/kerberos/include ; then
  15. CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
  16. fi
  17. fi
  18. # Not a no-op; we want to make sure that CPPFLAGS is set before we use
  19. # the += operator on it in src/or/Makefile.am
  20. CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
  21. #XXXX020 We should make these enabled or not, before 0.2.0.x-final
  22. AC_ARG_ENABLE(buf-freelists,
  23. AS_HELP_STRING(--enable-buf-freelists, enable freelists for buffer RAM))
  24. AC_ARG_ENABLE(mempools,
  25. AS_HELP_STRING(--enable-mempools, enable mempools for relay cells))
  26. AC_ARG_ENABLE(openbsd-malloc,
  27. AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd. Linux only))
  28. AC_ARG_ENABLE(instrument-downloads,
  29. AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
  30. AC_ARG_ENABLE(static-openssl,
  31. AS_HELP_STRING(--enable-static-openssl, Link against a static openssl library. Requires --with-openssl-dir))
  32. AC_ARG_ENABLE(static-libevent,
  33. AS_HELP_STRING(--enable-static-libevent, Link against a static libevent library. Requires --with-libevent-dir))
  34. AC_ARG_ENABLE(static-zlib,
  35. AS_HELP_STRING(--enable-static-zlib, Link against a static zlib library. Requires --with-zlib-dir))
  36. AC_ARG_ENABLE(static-tor,
  37. AS_HELP_STRING(--enable-static-tor, Create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir))
  38. AC_ARG_ENABLE(unittests,
  39. AS_HELP_STRING(--disable-unittests, [Don't build unit tests for Tor. Risky!]))
  40. AC_ARG_ENABLE(coverage,
  41. AS_HELP_STRING(--enable-coverage, [Enable coverage support in the unit-test build]))
  42. AM_CONDITIONAL(UNITTESTS_ENABLED, test x$enable_unittests != xno)
  43. AM_CONDITIONAL(COVERAGE_ENABLED, test x$enable_coverage = xyes)
  44. if test "$enable_static_tor" = "yes"; then
  45. enable_static_libevent="yes";
  46. enable_static_openssl="yes";
  47. enable_static_zlib="yes";
  48. CFLAGS="$CFLAGS -static"
  49. fi
  50. if test x$enable_buf_freelists = xyes; then
  51. AC_DEFINE(ENABLE_BUF_FREELISTS, 1,
  52. [Defined if we try to use freelists for buffer RAM chunks])
  53. fi
  54. AM_CONDITIONAL(USE_MEMPOOLS, test x$enable_mempools = xyes)
  55. if test x$enable_mempools = xyes; then
  56. AC_DEFINE(ENABLE_MEMPOOLS, 1,
  57. [Defined if we try to use mempools for cells being relayed])
  58. fi
  59. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
  60. if test x$enable_instrument_downloads = xyes; then
  61. AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
  62. [Defined if we want to keep track of how much of each kind of resource we download.])
  63. fi
  64. AC_ARG_ENABLE(transparent,
  65. AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
  66. [case "${enableval}" in
  67. yes) transparent=true ;;
  68. no) transparent=false ;;
  69. *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
  70. esac], [transparent=true])
  71. AC_ARG_ENABLE(asciidoc,
  72. AS_HELP_STRING(--disable-asciidoc, don't use asciidoc (disables building of manpages)),
  73. [case "${enableval}" in
  74. yes) asciidoc=true ;;
  75. no) asciidoc=false ;;
  76. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  77. esac], [asciidoc=true])
  78. # By default, we're not ready to ship a NAT-PMP aware Tor
  79. AC_ARG_ENABLE(nat-pmp,
  80. AS_HELP_STRING(--enable-nat-pmp, enable NAT-PMP support),
  81. [case "${enableval}" in
  82. yes) natpmp=true ;;
  83. no) natpmp=false ;;
  84. * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
  85. esac], [natpmp=false])
  86. # By default, we're not ready to ship a UPnP aware Tor
  87. AC_ARG_ENABLE(upnp,
  88. AS_HELP_STRING(--enable-upnp, enable UPnP support),
  89. [case "${enableval}" in
  90. yes) upnp=true ;;
  91. no) upnp=false ;;
  92. * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
  93. esac], [upnp=false])
  94. # systemd notify support
  95. AC_ARG_ENABLE(systemd,
  96. AS_HELP_STRING(--enable-systemd, enable systemd notification support),
  97. [case "${enableval}" in
  98. yes) systemd=true ;;
  99. no) systemd=false ;;
  100. * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
  101. esac], [systemd=auto])
  102. # systemd support
  103. if test x$enable_systemd = xfalse ; then
  104. have_systemd=no;
  105. else
  106. PKG_CHECK_MODULES(SYSTEMD,
  107. [libsystemd-daemon],
  108. have_systemd=yes,
  109. have_systemd=no)
  110. fi
  111. if test x$have_systemd = xyes; then
  112. AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
  113. TOR_SYSTEMD_LIBS="-lsystemd-daemon"
  114. fi
  115. AC_SUBST(TOR_SYSTEMD_LIBS)
  116. if test x$enable_systemd = xyes -a x$have_systemd != xyes ; then
  117. AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
  118. fi
  119. AC_ARG_ENABLE(threads,
  120. AS_HELP_STRING(--disable-threads, disable multi-threading support))
  121. if test x$enable_threads = x; then
  122. case $host in
  123. *-*-solaris* )
  124. # Don't try multithreading on solaris -- cpuworkers seem to lock.
  125. AC_MSG_NOTICE([You are running Solaris; Sometimes threading makes
  126. cpu workers lock up here, so I will disable threads.])
  127. enable_threads="no";;
  128. *)
  129. enable_threads="yes";;
  130. esac
  131. fi
  132. ifdef([HAVE_SYSTEMD], [
  133. AC_SEARCH_LIBS([sd_watchdog_enabled], [systemd-daemon],
  134. [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
  135. ])
  136. case $host in
  137. *-*-solaris* )
  138. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  139. ;;
  140. esac
  141. AC_ARG_ENABLE(gcc-warnings,
  142. AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
  143. AC_ARG_ENABLE(gcc-warnings-advisory,
  144. AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
  145. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  146. AC_ARG_ENABLE(gcc-hardening,
  147. AS_HELP_STRING(--disable-gcc-hardening, disable compiler security checks))
  148. AC_ARG_ENABLE(expensive-hardening,
  149. AS_HELP_STRING(--enable-expensive-hardening, enable more expensive compiler hardening; makes Tor slower))
  150. dnl Linker hardening options
  151. dnl Currently these options are ELF specific - you can't use this with MacOSX
  152. AC_ARG_ENABLE(linker-hardening,
  153. AS_HELP_STRING(--disable-linker-hardening, disable linker security fixups))
  154. AC_ARG_ENABLE(local-appdata,
  155. AS_HELP_STRING(--enable-local-appdata, default to host local application data paths on Windows))
  156. if test "$enable_local_appdata" = "yes"; then
  157. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  158. [Defined if we default to host local appdata paths on Windows])
  159. fi
  160. # Tor2web mode flag
  161. AC_ARG_ENABLE(tor2web-mode,
  162. AS_HELP_STRING(--enable-tor2web-mode, support tor2web non-anonymous mode),
  163. [if test x$enableval = xyes; then
  164. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  165. fi])
  166. AC_ARG_ENABLE(bufferevents,
  167. AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))
  168. AC_ARG_ENABLE(tool-name-check,
  169. AS_HELP_STRING(--disable-tool-name-check, check for sanely named toolchain when cross-compiling))
  170. AC_ARG_ENABLE(seccomp,
  171. AS_HELP_STRING(--disable-seccomp, do not attempt to use libseccomp))
  172. AC_ARG_ENABLE(libscrypt,
  173. AS_HELP_STRING(--disable-libscrypt, do not attempt to use libscrypt))
  174. dnl check for the correct "ar" when cross-compiling
  175. AN_MAKEVAR([AR], [AC_PROG_AR])
  176. AN_PROGRAM([ar], [AC_PROG_AR])
  177. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
  178. AC_PROG_AR
  179. dnl Check whether the above macro has settled for a simply named tool even
  180. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  181. dnl because that will find any cc on the system, not only the cross-compiler,
  182. dnl and then verify that a binary built with this compiler runs on the
  183. dnl build system. It will then come to the false conclusion that we're not
  184. dnl cross-compiling.
  185. if test x$enable_tool_name_check != xno; then
  186. if test x$ac_tool_warned = xyes; then
  187. 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.)])
  188. elif test "x$ac_ct_AR" != x -a x$cross_compiling = xmaybe; then
  189. 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.)])
  190. fi
  191. fi
  192. AC_PROG_CC
  193. AC_PROG_CPP
  194. AC_PROG_MAKE_SET
  195. AC_PROG_RANLIB
  196. dnl autoconf 2.59 appears not to support AC_PROG_SED
  197. AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
  198. dnl check for asciidoc and a2x
  199. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  200. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  201. AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
  202. AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
  203. AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
  204. AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
  205. AM_PROG_CC_C_O
  206. AC_PROG_CC_C99
  207. AC_ARG_VAR(PYTHON)
  208. AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
  209. if test "x$PYTHON" = "x"; then
  210. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  211. fi
  212. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  213. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  214. AC_C_FLEXIBLE_ARRAY_MEMBER
  215. ], [
  216. dnl Maybe we've got an old autoconf...
  217. AC_CACHE_CHECK([for flexible array members],
  218. tor_cv_c_flexarray,
  219. [AC_COMPILE_IFELSE(
  220. AC_LANG_PROGRAM([
  221. struct abc { int a; char b[]; };
  222. ], [
  223. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  224. def->b[0] = 33;
  225. ]),
  226. [tor_cv_c_flexarray=yes],
  227. [tor_cv_c_flexarray=no])])
  228. if test $tor_cv_flexarray = yes ; then
  229. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  230. else
  231. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  232. fi
  233. ])
  234. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  235. tor_cv_c_c99_decl,
  236. [AC_COMPILE_IFELSE(
  237. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  238. [tor_cv_c_c99_decl=yes],
  239. [tor_cv_c_c99_decl=no] )])
  240. if test "$tor_cv_c_c99_decl" != "yes"; then
  241. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  242. fi
  243. AC_CACHE_CHECK([for working C99 designated initializers],
  244. tor_cv_c_c99_designated_init,
  245. [AC_COMPILE_IFELSE(
  246. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  247. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  248. [tor_cv_c_c99_designated_init=yes],
  249. [tor_cv_c_c99_designated_init=no] )])
  250. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  251. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  252. fi
  253. AC_PATH_PROG([SHA1SUM], [sha1sum], none)
  254. AC_PATH_PROG([OPENSSL], [openssl], none)
  255. TORUSER=_tor
  256. AC_ARG_WITH(tor-user,
  257. [ --with-tor-user=NAME Specify username for tor daemon ],
  258. [
  259. TORUSER=$withval
  260. ]
  261. )
  262. AC_SUBST(TORUSER)
  263. TORGROUP=_tor
  264. AC_ARG_WITH(tor-group,
  265. [ --with-tor-group=NAME Specify group name for tor daemon ],
  266. [
  267. TORGROUP=$withval
  268. ]
  269. )
  270. AC_SUBST(TORGROUP)
  271. dnl If _WIN32 is defined and non-zero, we are building for win32
  272. AC_MSG_CHECKING([for win32])
  273. AC_RUN_IFELSE([AC_LANG_SOURCE([
  274. int main(int c, char **v) {
  275. #ifdef _WIN32
  276. #if _WIN32
  277. return 0;
  278. #else
  279. return 1;
  280. #endif
  281. #else
  282. return 2;
  283. #endif
  284. }])],
  285. bwin32=true; AC_MSG_RESULT([yes]),
  286. bwin32=false; AC_MSG_RESULT([no]),
  287. bwin32=cross; AC_MSG_RESULT([cross])
  288. )
  289. if test "$bwin32" = cross; then
  290. AC_MSG_CHECKING([for win32 (cross)])
  291. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  292. #ifdef _WIN32
  293. int main(int c, char **v) {return 0;}
  294. #else
  295. #error
  296. int main(int c, char **v) {return x(y);}
  297. #endif
  298. ])],
  299. bwin32=true; AC_MSG_RESULT([yes]),
  300. bwin32=false; AC_MSG_RESULT([no]))
  301. fi
  302. AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
  303. dnl Enable C99 when compiling with MIPSpro
  304. AC_MSG_CHECKING([for MIPSpro compiler])
  305. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  306. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  307. #error
  308. return x(y);
  309. #endif
  310. ])],
  311. bmipspro=false; AC_MSG_RESULT(no),
  312. bmipspro=true; AC_MSG_RESULT(yes))
  313. if test "$bmipspro" = true; then
  314. CFLAGS="$CFLAGS -c99"
  315. fi
  316. AC_C_BIGENDIAN
  317. AC_SEARCH_LIBS(socket, [socket network])
  318. AC_SEARCH_LIBS(gethostbyname, [nsl])
  319. AC_SEARCH_LIBS(dlopen, [dl])
  320. AC_SEARCH_LIBS(inet_aton, [resolv])
  321. saved_LIBS="$LIBS"
  322. AC_SEARCH_LIBS([clock_gettime], [rt])
  323. if test "$LIBS" != "$saved_LIBS"; then
  324. # Looks like we need -lrt for clock_gettime().
  325. have_rt=yes
  326. fi
  327. AC_SEARCH_LIBS(pthread_create, [pthread])
  328. AC_SEARCH_LIBS(pthread_detach, [pthread])
  329. dnl -------------------------------------------------------------------
  330. dnl Check for functions before libevent, since libevent-1.2 apparently
  331. dnl exports strlcpy without defining it in a header.
  332. AC_CHECK_FUNCS(
  333. _NSGetEnviron \
  334. accept4 \
  335. backtrace \
  336. backtrace_symbols_fd \
  337. clock_gettime \
  338. flock \
  339. ftime \
  340. getaddrinfo \
  341. getifaddrs \
  342. getrlimit \
  343. gettimeofday \
  344. gmtime_r \
  345. inet_aton \
  346. ioctl \
  347. issetugid \
  348. llround \
  349. localtime_r \
  350. lround \
  351. memmem \
  352. prctl \
  353. rint \
  354. sigaction \
  355. socketpair \
  356. strlcat \
  357. strlcpy \
  358. strnlen \
  359. strptime \
  360. strtok_r \
  361. strtoull \
  362. sysconf \
  363. sysctl \
  364. uname \
  365. usleep \
  366. vasprintf \
  367. _vscprintf
  368. )
  369. if test "$bwin32" != true; then
  370. AC_CHECK_HEADERS(pthread.h)
  371. AC_CHECK_FUNCS(pthread_create)
  372. fi
  373. dnl ------------------------------------------------------
  374. dnl Where do you live, libevent? And how do we call you?
  375. if test "$bwin32" = true; then
  376. TOR_LIB_WS32=-lws2_32
  377. TOR_LIB_IPHLPAPI=-liphlpapi
  378. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  379. # think it's actually necessary.
  380. TOR_LIB_GDI=-lgdi32
  381. else
  382. TOR_LIB_WS32=
  383. TOR_LIB_GDI=
  384. fi
  385. AC_SUBST(TOR_LIB_WS32)
  386. AC_SUBST(TOR_LIB_GDI)
  387. AC_SUBST(TOR_LIB_IPHLPAPI)
  388. dnl We need to do this before we try our disgusting hack below.
  389. AC_CHECK_HEADERS([sys/types.h])
  390. dnl This is a disgusting hack so we safely include older libevent headers.
  391. AC_CHECK_TYPE(u_int64_t, unsigned long long)
  392. AC_CHECK_TYPE(u_int32_t, unsigned long)
  393. AC_CHECK_TYPE(u_int16_t, unsigned short)
  394. AC_CHECK_TYPE(u_int8_t, unsigned char)
  395. tor_libevent_pkg_redhat="libevent"
  396. tor_libevent_pkg_debian="libevent-dev"
  397. tor_libevent_devpkg_redhat="libevent-devel"
  398. tor_libevent_devpkg_debian="libevent-dev"
  399. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  400. dnl linking for static builds.
  401. STATIC_LIBEVENT_FLAGS=""
  402. if test "$enable_static_libevent" = "yes"; then
  403. if test "$have_rt" = yes; then
  404. STATIC_LIBEVENT_FLAGS=" -lrt "
  405. fi
  406. fi
  407. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  408. #ifdef _WIN32
  409. #include <winsock2.h>
  410. #endif
  411. #include <stdlib.h>
  412. #include <sys/time.h>
  413. #include <sys/types.h>
  414. #include <event.h>], [
  415. #ifdef _WIN32
  416. #include <winsock2.h>
  417. #endif
  418. void exit(int); void *event_init(void);],
  419. [
  420. #ifdef _WIN32
  421. {WSADATA d; WSAStartup(0x101,&d); }
  422. #endif
  423. event_init(); exit(0);
  424. ], [--with-libevent-dir], [/opt/libevent])
  425. dnl Now check for particular libevent functions.
  426. save_LIBS="$LIBS"
  427. save_LDFLAGS="$LDFLAGS"
  428. save_CPPFLAGS="$CPPFLAGS"
  429. LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
  430. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  431. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  432. AC_CHECK_FUNCS([event_get_version \
  433. event_get_version_number \
  434. event_get_method \
  435. event_set_log_callback \
  436. evutil_secure_rng_set_urandom_device_file \
  437. evutil_secure_rng_init \
  438. event_base_loopexit])
  439. AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
  440. [#include <event.h>
  441. ])
  442. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  443. LIBS="$save_LIBS"
  444. LDFLAGS="$save_LDFLAGS"
  445. CPPFLAGS="$save_CPPFLAGS"
  446. AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
  447. if test "$enable_static_libevent" = "yes"; then
  448. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  449. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  450. else
  451. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  452. fi
  453. else
  454. TOR_LIBEVENT_LIBS="-levent"
  455. fi
  456. dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
  457. dnl we can do much better.
  458. if test "$enable_bufferevents" = "yes" ; then
  459. if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
  460. AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
  461. else
  462. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  463. # Check for the right version. First see if version detection works.
  464. AC_MSG_CHECKING([whether we can detect the Libevent version])
  465. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  466. #include <event2/event.h>
  467. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
  468. #error
  469. int x = y(zz);
  470. #else
  471. int x = 1;
  472. #endif
  473. ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
  474. [event_version_number_works=no; AC_MSG_RESULT([no])])
  475. if test "$event_version_number_works" != 'yes'; then
  476. AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
  477. else
  478. AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
  479. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  480. #include <event2/event.h>
  481. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
  482. #error
  483. int x = y(zz);
  484. #else
  485. int x = 1;
  486. #endif
  487. ])], [ AC_MSG_RESULT([yes]) ],
  488. [ AC_MSG_RESULT([no])
  489. AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
  490. fi
  491. fi
  492. fi
  493. LIBS="$save_LIBS"
  494. LDFLAGS="$save_LDFLAGS"
  495. CPPFLAGS="$save_CPPFLAGS"
  496. AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
  497. if test "$enable_bufferevents" = "yes"; then
  498. AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
  499. if test "$enable_static_libevent" = "yes"; then
  500. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
  501. else
  502. TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
  503. fi
  504. fi
  505. AC_SUBST(TOR_LIBEVENT_LIBS)
  506. dnl ------------------------------------------------------
  507. dnl Where do you live, libm?
  508. dnl On some platforms (Haiku/BeOS) the math library is
  509. dnl part of libroot. In which case don't link against lm
  510. TOR_LIB_MATH=""
  511. save_LIBS="$LIBS"
  512. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  513. if test "$ac_cv_search_pow" != "none required"; then
  514. TOR_LIB_MATH="$ac_cv_search_pow"
  515. fi
  516. LIBS="$save_LIBS"
  517. AC_SUBST(TOR_LIB_MATH)
  518. dnl ------------------------------------------------------
  519. dnl Where do you live, openssl? And how do we call you?
  520. tor_openssl_pkg_redhat="openssl"
  521. tor_openssl_pkg_debian="libssl-dev"
  522. tor_openssl_devpkg_redhat="openssl-devel"
  523. tor_openssl_devpkg_debian="libssl-dev"
  524. ALT_openssl_WITHVAL=""
  525. AC_ARG_WITH(ssl-dir,
  526. [ --with-ssl-dir=PATH Obsolete alias for --with-openssl-dir ],
  527. [
  528. if test "x$withval" != xno && test "x$withval" != "x" ; then
  529. ALT_openssl_WITHVAL="$withval"
  530. fi
  531. ])
  532. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
  533. [#include <openssl/rand.h>],
  534. [void RAND_add(const void *buf, int num, double entropy);],
  535. [RAND_add((void*)0,0,0); exit(0);], [],
  536. [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
  537. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  538. if test "$enable_static_openssl" = "yes"; then
  539. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  540. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  541. else
  542. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  543. fi
  544. else
  545. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  546. fi
  547. AC_SUBST(TOR_OPENSSL_LIBS)
  548. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  549. [#include <openssl/ssl.h>
  550. ])
  551. dnl ------------------------------------------------------
  552. dnl Where do you live, zlib? And how do we call you?
  553. tor_zlib_pkg_redhat="zlib"
  554. tor_zlib_pkg_debian="zlib1g"
  555. tor_zlib_devpkg_redhat="zlib-devel"
  556. tor_zlib_devpkg_debian="zlib1g-dev"
  557. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  558. [#include <zlib.h>],
  559. [const char * zlibVersion(void);],
  560. [zlibVersion(); exit(0);], [--with-zlib-dir],
  561. [/opt/zlib])
  562. if test "$enable_static_zlib" = "yes"; then
  563. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  564. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  565. using --enable-static-zlib")
  566. else
  567. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  568. fi
  569. else
  570. TOR_ZLIB_LIBS="-lz"
  571. fi
  572. AC_SUBST(TOR_ZLIB_LIBS)
  573. dnl ---------------------------------------------------------------------
  574. dnl Now that we know about our major libraries, we can check for compiler
  575. dnl and linker hardening options. We need to do this with the libraries known,
  576. dnl since sometimes the linker will like an option but not be willing to
  577. dnl use it with a build of a library.
  578. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  579. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
  580. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  581. #if !defined(__clang__)
  582. #error
  583. #endif])], have_clang=yes, have_clang=no)
  584. if test x$enable_gcc_hardening != xno; then
  585. CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
  586. if test x$have_clang = xyes; then
  587. TOR_CHECK_CFLAGS(-Qunused-arguments)
  588. fi
  589. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  590. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  591. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  592. m4_ifdef([AS_VAR_IF],[
  593. AS_VAR_IF(can_compile, [yes],
  594. AS_VAR_IF(can_link, [yes],
  595. [],
  596. 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.)]))
  597. )])
  598. AS_VAR_POPDEF([can_link])
  599. AS_VAR_POPDEF([can_compile])
  600. TOR_CHECK_CFLAGS(-Wstack-protector)
  601. TOR_CHECK_CFLAGS(-fwrapv)
  602. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  603. if test "$bwin32" = "false"; then
  604. TOR_CHECK_CFLAGS(-fPIE)
  605. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  606. fi
  607. fi
  608. if test x$enable_expensive_hardening = xyes ; then
  609. TOR_CHECK_CFLAGS([-fsanitize=address])
  610. TOR_CHECK_CFLAGS([-fsanitize=undefined])
  611. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  612. fi
  613. if test x$enable_linker_hardening != xno; then
  614. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  615. fi
  616. # For backtrace support
  617. TOR_CHECK_LDFLAGS(-rdynamic)
  618. dnl ------------------------------------------------------
  619. dnl Now see if we have a -fomit-frame-pointer compiler option.
  620. saved_CFLAGS="$CFLAGS"
  621. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  622. F_OMIT_FRAME_POINTER=''
  623. if test "$saved_CFLAGS" != "$CFLAGS"; then
  624. if test x$enable_expensive_hardening != xyes ; then
  625. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  626. fi
  627. fi
  628. CFLAGS="$saved_CFLAGS"
  629. AC_SUBST(F_OMIT_FRAME_POINTER)
  630. dnl ------------------------------------------------------
  631. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  632. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  633. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  634. dnl code will work.
  635. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  636. dnl ------------------------------------------------------
  637. dnl Where do you live, libnatpmp? And how do we call you?
  638. dnl There are no packages for Debian or Redhat as of this patch
  639. if test "$natpmp" = "true"; then
  640. AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
  641. TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  642. [#include <natpmp.h>],
  643. [#ifdef _WIN32
  644. #define STATICLIB
  645. #endif
  646. #include <natpmp.h>],
  647. [ int r;
  648. natpmp_t natpmp;
  649. natpmpresp_t response;
  650. r = initnatpmp(&natpmp, 0, 0);],
  651. [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
  652. exit(0);],
  653. [--with-libnatpmp-dir],
  654. [/usr/lib/])
  655. fi
  656. dnl ------------------------------------------------------
  657. dnl Where do you live, libminiupnpc? And how do we call you?
  658. dnl There are no packages for Debian or Redhat as of this patch
  659. if test "$upnp" = "true"; then
  660. AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
  661. dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
  662. dnl to see if we have miniupnpc-1.5 or -1.6
  663. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
  664. [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])
  665. if test "$miniupnpc15" = "true" ; then
  666. AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
  667. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  668. [#include <miniupnpc/miniwget.h>
  669. #include <miniupnpc/miniupnpc.h>
  670. #include <miniupnpc/upnpcommands.h>],
  671. [void upnpDiscover(int delay, const char * multicastif,
  672. const char * minissdpdsock, int sameport);],
  673. [upnpDiscover(1, 0, 0, 0); exit(0);],
  674. [--with-libminiupnpc-dir],
  675. [/usr/lib/])
  676. else
  677. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  678. [#include <miniupnpc/miniwget.h>
  679. #include <miniupnpc/miniupnpc.h>
  680. #include <miniupnpc/upnpcommands.h>],
  681. [void upnpDiscover(int delay, const char * multicastif,
  682. const char * minissdpdsock, int sameport, int ipv6, int * error);],
  683. [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
  684. [--with-libminiupnpc-dir],
  685. [/usr/lib/])
  686. fi
  687. fi
  688. dnl ============================================================
  689. dnl Check for libseccomp
  690. if test "x$enable_seccomp" != "xno"; then
  691. AC_CHECK_HEADERS([seccomp.h])
  692. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  693. fi
  694. dnl ============================================================
  695. dnl Check for libscrypt
  696. if test "x$enable_libscrypt" != "xno"; then
  697. AC_CHECK_HEADERS([libscrypt.h])
  698. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  699. fi
  700. dnl ============================================================
  701. dnl We need an implementation of curve25519.
  702. dnl set these defaults.
  703. build_curve25519_donna=no
  704. build_curve25519_donna_c64=no
  705. use_curve25519_donna=no
  706. use_curve25519_nacl=no
  707. CURVE25519_LIBS=
  708. dnl The best choice is using curve25519-donna-c64, but that requires
  709. dnl that we
  710. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  711. tor_cv_can_use_curve25519_donna_c64,
  712. [AC_RUN_IFELSE(
  713. [AC_LANG_PROGRAM([dnl
  714. #include <stdint.h>
  715. typedef unsigned uint128_t __attribute__((mode(TI)));
  716. int func(uint64_t a, uint64_t b) {
  717. uint128_t c = ((uint128_t)a) * b;
  718. int ok = ((uint64_t)(c>>96)) == 522859 &&
  719. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  720. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  721. (((uint64_t)(c))&0xffffffffL) == 0;
  722. return ok;
  723. }
  724. ], [dnl
  725. int ok = func( ((uint64_t)2000000000) * 1000000000,
  726. ((uint64_t)1234567890) << 24);
  727. return !ok;
  728. ])],
  729. [tor_cv_can_use_curve25519_donna_c64=yes],
  730. [tor_cv_can_use_curve25519_donna_c64=no],
  731. [AC_LINK_IFELSE(
  732. [AC_LANG_PROGRAM([dnl
  733. #include <stdint.h>
  734. typedef unsigned uint128_t __attribute__((mode(TI)));
  735. int func(uint64_t a, uint64_t b) {
  736. uint128_t c = ((uint128_t)a) * b;
  737. int ok = ((uint64_t)(c>>96)) == 522859 &&
  738. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  739. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  740. (((uint64_t)(c))&0xffffffffL) == 0;
  741. return ok;
  742. }
  743. ], [dnl
  744. int ok = func( ((uint64_t)2000000000) * 1000000000,
  745. ((uint64_t)1234567890) << 24);
  746. return !ok;
  747. ])],
  748. [tor_cv_can_use_curve25519_donna_c64=cross],
  749. [tor_cv_can_use_curve25519_donna_c64=no])])])
  750. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  751. nacl/crypto_scalarmult_curve25519.h])
  752. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  753. tor_cv_can_use_curve25519_nacl,
  754. [tor_saved_LIBS="$LIBS"
  755. LIBS="$LIBS -lnacl"
  756. AC_LINK_IFELSE(
  757. [AC_LANG_PROGRAM([dnl
  758. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  759. #include <crypto_scalarmult_curve25519.h>
  760. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  761. #include <nacl/crypto_scalarmult_curve25519.h>
  762. #endif
  763. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  764. #error Hey, this is the reference implementation! That's not fast.
  765. #endif
  766. ], [
  767. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  768. ])], [tor_cv_can_use_curve25519_nacl=yes],
  769. [tor_cv_can_use_curve25519_nacl=no])
  770. LIBS="$tor_saved_LIBS" ])
  771. dnl Okay, now we need to figure out which one to actually use. Fall back
  772. dnl to curve25519-donna.c
  773. if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
  774. build_curve25519_donna_c64=yes
  775. use_curve25519_donna=yes
  776. elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
  777. use_curve25519_nacl=yes
  778. CURVE25519_LIBS=-lnacl
  779. else
  780. build_curve25519_donna=yes
  781. use_curve25519_donna=yes
  782. fi
  783. if test x$use_curve25519_donna = xyes; then
  784. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  785. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  786. fi
  787. if test x$use_curve25519_nacl = xyes; then
  788. AC_DEFINE(USE_CURVE25519_NACL, 1,
  789. [Defined if we should use a curve25519 from nacl])
  790. fi
  791. AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
  792. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
  793. AC_SUBST(CURVE25519_LIBS)
  794. dnl Make sure to enable support for large off_t if available.
  795. AC_SYS_LARGEFILE
  796. AC_CHECK_HEADERS(
  797. assert.h \
  798. errno.h \
  799. fcntl.h \
  800. signal.h \
  801. string.h \
  802. sys/fcntl.h \
  803. sys/stat.h \
  804. sys/time.h \
  805. sys/types.h \
  806. time.h \
  807. unistd.h
  808. , , 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.))
  809. dnl These headers are not essential
  810. AC_CHECK_HEADERS(
  811. arpa/inet.h \
  812. crt_externs.h \
  813. execinfo.h \
  814. grp.h \
  815. ifaddrs.h \
  816. inttypes.h \
  817. limits.h \
  818. linux/types.h \
  819. machine/limits.h \
  820. malloc.h \
  821. malloc/malloc.h \
  822. malloc_np.h \
  823. netdb.h \
  824. netinet/in.h \
  825. netinet/in6.h \
  826. pwd.h \
  827. stdint.h \
  828. sys/file.h \
  829. sys/ioctl.h \
  830. sys/limits.h \
  831. sys/mman.h \
  832. sys/param.h \
  833. sys/prctl.h \
  834. sys/resource.h \
  835. sys/select.h \
  836. sys/socket.h \
  837. sys/sysctl.h \
  838. sys/syslimits.h \
  839. sys/time.h \
  840. sys/types.h \
  841. sys/un.h \
  842. sys/utime.h \
  843. sys/wait.h \
  844. syslog.h \
  845. utime.h
  846. )
  847. AC_CHECK_HEADERS(sys/param.h)
  848. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  849. [#ifdef HAVE_SYS_TYPES_H
  850. #include <sys/types.h>
  851. #endif
  852. #ifdef HAVE_SYS_SOCKET_H
  853. #include <sys/socket.h>
  854. #endif])
  855. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  856. [#ifdef HAVE_SYS_TYPES_H
  857. #include <sys/types.h>
  858. #endif
  859. #ifdef HAVE_SYS_SOCKET_H
  860. #include <sys/socket.h>
  861. #endif
  862. #ifdef HAVE_NET_IF_H
  863. #include <net/if.h>
  864. #endif])
  865. AC_CHECK_HEADERS(linux/if.h,[],[],
  866. [
  867. #ifdef HAVE_SYS_SOCKET_H
  868. #include <sys/socket.h>
  869. #endif
  870. ])
  871. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  872. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  873. [#ifdef HAVE_SYS_TYPES_H
  874. #include <sys/types.h>
  875. #endif
  876. #ifdef HAVE_SYS_SOCKET_H
  877. #include <sys/socket.h>
  878. #endif
  879. #ifdef HAVE_LIMITS_H
  880. #include <limits.h>
  881. #endif
  882. #ifdef HAVE_LINUX_TYPES_H
  883. #include <linux/types.h>
  884. #endif
  885. #ifdef HAVE_NETINET_IN6_H
  886. #include <netinet/in6.h>
  887. #endif
  888. #ifdef HAVE_NETINET_IN_H
  889. #include <netinet/in.h>
  890. #endif])
  891. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  892. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  893. [#ifdef HAVE_SYS_TYPES_H
  894. #include <sys/types.h>
  895. #endif
  896. #ifdef HAVE_SYS_SOCKET_H
  897. #include <sys/socket.h>
  898. #endif
  899. #ifdef HAVE_LIMITS_H
  900. #include <limits.h>
  901. #endif
  902. #ifdef HAVE_LINUX_TYPES_H
  903. #include <linux/types.h>
  904. #endif
  905. #ifdef HAVE_NETINET_IN6_H
  906. #include <netinet/in6.h>
  907. #endif
  908. #ifdef HAVE_NETINET_IN_H
  909. #include <netinet/in.h>
  910. #endif
  911. #ifdef HAVE_LINUX_IF_H
  912. #include <linux/if.h>
  913. #endif])
  914. if test x$transparent = xtrue ; then
  915. transparent_ok=0
  916. if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
  917. transparent_ok=1
  918. fi
  919. if test x$linux_netfilter_ipv4 = x1 ; then
  920. transparent_ok=1
  921. fi
  922. if test x$linux_netfilter_ipv6_ip6_tables = x1 ; then
  923. transparent_ok=1
  924. fi
  925. if test x$transparent_ok = x1 ; then
  926. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  927. case $host in
  928. *-*-openbsd* | *-*-bitrig*)
  929. AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
  930. esac
  931. else
  932. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  933. fi
  934. fi
  935. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  936. [#ifdef HAVE_SYS_TYPES_H
  937. #include <sys/types.h>
  938. #endif
  939. #ifdef HAVE_SYS_TIME_H
  940. #include <sys/time.h>
  941. #endif])
  942. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  943. dnl Watch out.
  944. AC_CHECK_SIZEOF(int8_t)
  945. AC_CHECK_SIZEOF(int16_t)
  946. AC_CHECK_SIZEOF(int32_t)
  947. AC_CHECK_SIZEOF(int64_t)
  948. AC_CHECK_SIZEOF(uint8_t)
  949. AC_CHECK_SIZEOF(uint16_t)
  950. AC_CHECK_SIZEOF(uint32_t)
  951. AC_CHECK_SIZEOF(uint64_t)
  952. AC_CHECK_SIZEOF(intptr_t)
  953. AC_CHECK_SIZEOF(uintptr_t)
  954. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  955. AC_CHECK_SIZEOF(char)
  956. AC_CHECK_SIZEOF(short)
  957. AC_CHECK_SIZEOF(int)
  958. AC_CHECK_SIZEOF(long)
  959. AC_CHECK_SIZEOF(long long)
  960. AC_CHECK_SIZEOF(__int64)
  961. AC_CHECK_SIZEOF(void *)
  962. AC_CHECK_SIZEOF(time_t)
  963. AC_CHECK_SIZEOF(size_t)
  964. AC_CHECK_SIZEOF(pid_t)
  965. AC_CHECK_TYPES([uint, u_char, ssize_t])
  966. AC_PC_FROM_UCONTEXT([/bin/true])
  967. dnl used to include sockaddr_storage, but everybody has that.
  968. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  969. [#ifdef HAVE_SYS_TYPES_H
  970. #include <sys/types.h>
  971. #endif
  972. #ifdef HAVE_NETINET_IN_H
  973. #include <netinet/in.h>
  974. #endif
  975. #ifdef HAVE_NETINET_IN6_H
  976. #include <netinet/in6.h>
  977. #endif
  978. #ifdef HAVE_SYS_SOCKET_H
  979. #include <sys/socket.h>
  980. #endif
  981. #ifdef _WIN32
  982. #define _WIN32_WINNT 0x0501
  983. #define WIN32_LEAN_AND_MEAN
  984. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  985. #include <winsock.h>
  986. #else
  987. #include <winsock2.h>
  988. #include <ws2tcpip.h>
  989. #endif
  990. #endif
  991. ])
  992. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  993. [#ifdef HAVE_SYS_TYPES_H
  994. #include <sys/types.h>
  995. #endif
  996. #ifdef HAVE_NETINET_IN_H
  997. #include <netinet/in.h>
  998. #endif
  999. #ifdef HAVE_NETINET_IN6_H
  1000. #include <netinet/in6.h>
  1001. #endif
  1002. #ifdef HAVE_SYS_SOCKET_H
  1003. #include <sys/socket.h>
  1004. #endif
  1005. #ifdef _WIN32
  1006. #define _WIN32_WINNT 0x0501
  1007. #define WIN32_LEAN_AND_MEAN
  1008. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  1009. #include <winsock.h>
  1010. #else
  1011. #include <winsock2.h>
  1012. #include <ws2tcpip.h>
  1013. #endif
  1014. #endif
  1015. ])
  1016. AC_CHECK_TYPES([rlim_t], , ,
  1017. [#ifdef HAVE_SYS_TYPES_H
  1018. #include <sys/types.h>
  1019. #endif
  1020. #ifdef HAVE_SYS_TIME_H
  1021. #include <sys/time.h>
  1022. #endif
  1023. #ifdef HAVE_SYS_RESOURCE_H
  1024. #include <sys/resource.h>
  1025. #endif
  1026. ])
  1027. AX_CHECK_SIGN([time_t],
  1028. [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
  1029. [ : ], [
  1030. #ifdef HAVE_SYS_TYPES_H
  1031. #include <sys/types.h>
  1032. #endif
  1033. #ifdef HAVE_SYS_TIME_H
  1034. #include <sys/time.h>
  1035. #endif
  1036. #ifdef HAVE_TIME_H
  1037. #include <time.h>
  1038. #endif
  1039. ])
  1040. if test "$ax_cv_decl_time_t_signed" = no; then
  1041. AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
  1042. fi
  1043. AX_CHECK_SIGN([size_t],
  1044. [ tor_cv_size_t_signed=yes ],
  1045. [ tor_cv_size_t_signed=no ], [
  1046. #ifdef HAVE_SYS_TYPES_H
  1047. #include <sys/types.h>
  1048. #endif
  1049. ])
  1050. if test "$ax_cv_decl_size_t_signed" = yes; then
  1051. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1052. fi
  1053. AX_CHECK_SIGN([enum always],
  1054. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1055. [ : ], [
  1056. enum always { AAA, BBB, CCC };
  1057. ])
  1058. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1059. #ifdef HAVE_SYS_SOCKET_H
  1060. #include <sys/socket.h>
  1061. #endif
  1062. ])
  1063. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1064. AC_CHECK_SIZEOF(cell_t)
  1065. # Now make sure that NULL can be represented as zero bytes.
  1066. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1067. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1068. [[#include <stdlib.h>
  1069. #include <string.h>
  1070. #include <stdio.h>
  1071. #ifdef HAVE_STDDEF_H
  1072. #include <stddef.h>
  1073. #endif
  1074. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1075. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1076. [tor_cv_null_is_zero=yes],
  1077. [tor_cv_null_is_zero=no],
  1078. [tor_cv_null_is_zero=cross])])
  1079. if test "$tor_cv_null_is_zero" = cross ; then
  1080. # Cross-compiling; let's hope that the target isn't raving mad.
  1081. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1082. fi
  1083. if test "$tor_cv_null_is_zero" != no; then
  1084. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1085. [Define to 1 iff memset(0) sets pointers to NULL])
  1086. fi
  1087. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1088. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1089. [[#include <stdlib.h>
  1090. #include <string.h>
  1091. #include <stdio.h>
  1092. #ifdef HAVE_STDDEF_H
  1093. #include <stddef.h>
  1094. #endif
  1095. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1096. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1097. [tor_cv_dbl0_is_zero=yes],
  1098. [tor_cv_dbl0_is_zero=no],
  1099. [tor_cv_dbl0_is_zero=cross])])
  1100. if test "$tor_cv_dbl0_is_zero" = cross ; then
  1101. # Cross-compiling; let's hope that the target isn't raving mad.
  1102. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1103. fi
  1104. if test "$tor_cv_dbl0_is_zero" != no; then
  1105. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1106. [Define to 1 iff memset(0) sets doubles to 0.0])
  1107. fi
  1108. # And what happens when we malloc zero?
  1109. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1110. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1111. [[#include <stdlib.h>
  1112. #include <string.h>
  1113. #include <stdio.h>
  1114. #ifdef HAVE_STDDEF_H
  1115. #include <stddef.h>
  1116. #endif
  1117. int main () { return malloc(0)?0:1; }]])],
  1118. [tor_cv_malloc_zero_works=yes],
  1119. [tor_cv_malloc_zero_works=no],
  1120. [tor_cv_malloc_zero_works=cross])])
  1121. if test "$tor_cv_malloc_zero_works" = cross; then
  1122. # Cross-compiling; let's hope that the target isn't raving mad.
  1123. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1124. fi
  1125. if test "$tor_cv_malloc_zero_works" = yes; then
  1126. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1127. [Define to 1 iff malloc(0) returns a pointer])
  1128. fi
  1129. # whether we seem to be in a 2s-complement world.
  1130. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1131. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1132. [[int main () { int problem = ((-99) != (~99)+1);
  1133. return problem ? 1 : 0; }]])],
  1134. [tor_cv_twos_complement=yes],
  1135. [tor_cv_twos_complement=no],
  1136. [tor_cv_twos_complement=cross])])
  1137. if test "$tor_cv_twos_complement" = cross ; then
  1138. # Cross-compiling; let's hope that the target isn't raving mad.
  1139. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1140. fi
  1141. if test "$tor_cv_twos_complement" != no ; then
  1142. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1143. [Define to 1 iff we represent negative integers with two's complement])
  1144. fi
  1145. # What does shifting a negative value do?
  1146. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1147. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1148. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1149. [tor_cv_sign_extend=yes],
  1150. [tor_cv_sign_extend=no],
  1151. [tor_cv_sign_extend=cross])])
  1152. if test "$tor_cv_sign_extend" = cross ; then
  1153. # Cross-compiling; let's hope that the target isn't raving mad.
  1154. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1155. fi
  1156. if test "$tor_cv_sign_extend" != no ; then
  1157. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1158. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1159. fi
  1160. # Whether we should use the dmalloc memory allocation debugging library.
  1161. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1162. AC_ARG_WITH(dmalloc,
  1163. [ --with-dmalloc Use debug memory allocation library. ],
  1164. [if [[ "$withval" = "yes" ]]; then
  1165. dmalloc=1
  1166. AC_MSG_RESULT(yes)
  1167. else
  1168. dmalloc=1
  1169. AC_MSG_RESULT(no)
  1170. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1171. )
  1172. if [[ $dmalloc -eq 1 ]]; then
  1173. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1174. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1175. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1176. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1177. fi
  1178. AC_ARG_WITH(tcmalloc,
  1179. [ --with-tcmalloc Use tcmalloc memory allocation library. ],
  1180. [ tcmalloc=yes ], [ tcmalloc=no ])
  1181. if test x$tcmalloc = xyes ; then
  1182. LDFLAGS="-ltcmalloc $LDFLAGS"
  1183. fi
  1184. using_custom_malloc=no
  1185. if test x$enable_openbsd_malloc = xyes ; then
  1186. using_custom_malloc=yes
  1187. fi
  1188. if test x$tcmalloc = xyes ; then
  1189. using_custom_malloc=yes
  1190. fi
  1191. if test $using_custom_malloc = no ; then
  1192. AC_CHECK_FUNCS(mallinfo)
  1193. fi
  1194. # By default, we're going to assume we don't have mlockall()
  1195. # bionic and other platforms have various broken mlockall subsystems.
  1196. # Some systems don't have a working mlockall, some aren't linkable,
  1197. # and some have it but don't declare it.
  1198. AC_CHECK_FUNCS(mlockall)
  1199. AC_CHECK_DECLS([mlockall], , , [
  1200. #ifdef HAVE_SYS_MMAN_H
  1201. #include <sys/mman.h>
  1202. #endif])
  1203. # Allow user to specify an alternate syslog facility
  1204. AC_ARG_WITH(syslog-facility,
  1205. [ --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
  1206. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1207. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1208. AC_SUBST(LOGFACILITY)
  1209. # Check if we have getresuid and getresgid
  1210. AC_CHECK_FUNCS(getresuid getresgid)
  1211. # Check for gethostbyname_r in all its glorious incompatible versions.
  1212. # (This logic is based on that in Python's configure.in)
  1213. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1214. [Define this if you have any gethostbyname_r()])
  1215. AC_CHECK_FUNC(gethostbyname_r, [
  1216. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1217. OLD_CFLAGS=$CFLAGS
  1218. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1219. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
  1220. #include <netdb.h>
  1221. ], [[
  1222. char *cp1, *cp2;
  1223. struct hostent *h1, *h2;
  1224. int i1, i2;
  1225. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1226. ]])],[
  1227. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1228. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1229. [Define this if gethostbyname_r takes 6 arguments])
  1230. AC_MSG_RESULT(6)
  1231. ], [
  1232. AC_TRY_COMPILE([
  1233. #include <netdb.h>
  1234. ], [
  1235. char *cp1, *cp2;
  1236. struct hostent *h1;
  1237. int i1, i2;
  1238. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1239. ], [
  1240. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1241. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1242. [Define this if gethostbyname_r takes 5 arguments])
  1243. AC_MSG_RESULT(5)
  1244. ], [
  1245. AC_TRY_COMPILE([
  1246. #include <netdb.h>
  1247. ], [
  1248. char *cp1;
  1249. struct hostent *h1;
  1250. struct hostent_data hd;
  1251. (void) gethostbyname_r(cp1,h1,&hd);
  1252. ], [
  1253. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1254. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1255. [Define this if gethostbyname_r takes 3 arguments])
  1256. AC_MSG_RESULT(3)
  1257. ], [
  1258. AC_MSG_RESULT(0)
  1259. ])
  1260. ])
  1261. ])
  1262. CFLAGS=$OLD_CFLAGS
  1263. ])
  1264. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1265. tor_cv_have_func_macro,
  1266. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1267. #include <stdio.h>
  1268. int main(int c, char **v) { puts(__func__); }])],
  1269. tor_cv_have_func_macro=yes,
  1270. tor_cv_have_func_macro=no))
  1271. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1272. tor_cv_have_FUNC_macro,
  1273. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1274. #include <stdio.h>
  1275. int main(int c, char **v) { puts(__FUNC__); }])],
  1276. tor_cv_have_FUNC_macro=yes,
  1277. tor_cv_have_FUNC_macro=no))
  1278. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1279. tor_cv_have_FUNCTION_macro,
  1280. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1281. #include <stdio.h>
  1282. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1283. tor_cv_have_FUNCTION_macro=yes,
  1284. tor_cv_have_FUNCTION_macro=no))
  1285. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1286. tor_cv_have_environ_declared,
  1287. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1288. /* We define _GNU_SOURCE here because it is also defined in compat.c.
  1289. * Without it environ doesn't get declared. */
  1290. #define _GNU_SOURCE
  1291. #ifdef HAVE_UNISTD_H
  1292. #include <unistd.h>
  1293. #endif
  1294. #include <stdlib.h>
  1295. int main(int c, char **v) { char **t = environ; }])],
  1296. tor_cv_have_environ_declared=yes,
  1297. tor_cv_have_environ_declared=no))
  1298. if test "$tor_cv_have_func_macro" = 'yes'; then
  1299. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1300. fi
  1301. if test "$tor_cv_have_FUNC_macro" = 'yes'; then
  1302. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1303. fi
  1304. if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
  1305. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1306. [Defined if the compiler supports __FUNCTION__])
  1307. fi
  1308. if test "$tor_cv_have_environ_declared" = 'yes'; then
  1309. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1310. [Defined if we have extern char **environ already declared])
  1311. fi
  1312. # $prefix stores the value of the --prefix command line option, or
  1313. # NONE if the option wasn't set. In the case that it wasn't set, make
  1314. # it be the default, so that we can use it to expand directories now.
  1315. if test "x$prefix" = "xNONE"; then
  1316. prefix=$ac_default_prefix
  1317. fi
  1318. # and similarly for $exec_prefix
  1319. if test "x$exec_prefix" = "xNONE"; then
  1320. exec_prefix=$prefix
  1321. fi
  1322. if test "x$BUILDDIR" = "x"; then
  1323. BUILDDIR=`pwd`
  1324. fi
  1325. AC_SUBST(BUILDDIR)
  1326. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1327. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1328. if test "x$CONFDIR" = "x"; then
  1329. CONFDIR=`eval echo $sysconfdir/tor`
  1330. fi
  1331. AC_SUBST(CONFDIR)
  1332. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1333. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1334. BINDIR=`eval echo $bindir`
  1335. AC_SUBST(BINDIR)
  1336. LOCALSTATEDIR=`eval echo $localstatedir`
  1337. AC_SUBST(LOCALSTATEDIR)
  1338. if test "$bwin32" = true; then
  1339. # Test if the linker supports the --nxcompat and --dynamicbase options
  1340. # for Windows
  1341. save_LDFLAGS="$LDFLAGS"
  1342. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1343. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1344. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1345. [AC_MSG_RESULT([yes])]
  1346. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1347. [AC_MSG_RESULT([no])]
  1348. )
  1349. LDFLAGS="$save_LDFLAGS"
  1350. fi
  1351. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1352. # than autoconf's macros like.
  1353. if test "$GCC" = yes; then
  1354. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1355. # accident waiting to happen.
  1356. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1357. else
  1358. # Autoconf sets -g -O2 by default. Override optimization level
  1359. # for non-gcc compilers
  1360. CFLAGS="$CFLAGS -O"
  1361. enable_gcc_warnings=no
  1362. enable_gcc_warnings_advisory=no
  1363. fi
  1364. # OS X Lion started deprecating the system openssl. Let's just disable
  1365. # all deprecation warnings on OS X. Also, to potentially make the binary
  1366. # a little smaller, let's enable dead_strip.
  1367. case "$host_os" in
  1368. darwin*)
  1369. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1370. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1371. esac
  1372. # Add some more warnings which we use in development but not in the
  1373. # released versions. (Some relevant gcc versions can't handle these.)
  1374. if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
  1375. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1376. #if !defined(__GNUC__) || (__GNUC__ < 4)
  1377. #error
  1378. #endif])], have_gcc4=yes, have_gcc4=no)
  1379. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1380. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
  1381. #error
  1382. #endif])], have_gcc42=yes, have_gcc42=no)
  1383. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1384. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
  1385. #error
  1386. #endif])], have_gcc43=yes, have_gcc43=no)
  1387. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1388. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
  1389. #error
  1390. #endif])], have_gcc46=yes, have_gcc46=no)
  1391. save_CFLAGS="$CFLAGS"
  1392. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1393. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
  1394. have_shorten64_flag=no)
  1395. CFLAGS="$save_CFLAGS"
  1396. case $host in
  1397. *-*-openbsd* | *-*-bitrig*)
  1398. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1399. # That's fine, except that the headers don't pass -Wredundant-decls.
  1400. # Therefore, let's disable -Wsystem-headers when we're building
  1401. # with maximal warnings on OpenBSD.
  1402. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1403. esac
  1404. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1405. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1406. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1407. CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
  1408. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1409. if test x$enable_gcc_warnings = xyes; then
  1410. CFLAGS="$CFLAGS -Werror"
  1411. fi
  1412. # Disabled, so we can use mallinfo(): -Waggregate-return
  1413. if test x$have_gcc4 = xyes ; then
  1414. # These warnings break gcc 3.3.5 and work on gcc 4.0.2
  1415. CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wold-style-definition"
  1416. fi
  1417. if test x$have_gcc42 = xyes ; then
  1418. # These warnings break gcc 4.0.2 and work on gcc 4.2
  1419. # XXXX020 See if any of these work with earlier versions.
  1420. CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
  1421. # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
  1422. fi
  1423. if test x$have_gcc42 = xyes && test x$have_clang = xno; then
  1424. # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
  1425. CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
  1426. fi
  1427. if test x$have_gcc43 = xyes ; then
  1428. # These warnings break gcc 4.2 and work on gcc 4.3
  1429. # XXXX020 See if any of these work with earlier versions.
  1430. CFLAGS="$CFLAGS -Wextra -Warray-bounds"
  1431. fi
  1432. if test x$have_gcc46 = xyes ; then
  1433. # This warning was added in gcc 4.3, but it appears to generate
  1434. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1435. CFLAGS="$CFLAGS -Wlogical-op"
  1436. fi
  1437. if test x$have_shorten64_flag = xyes ; then
  1438. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1439. fi
  1440. ##This will break the world on some 64-bit architectures
  1441. # CFLAGS="$CFLAGS -Winline"
  1442. fi
  1443. if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
  1444. case "$host_os" in
  1445. darwin*)
  1446. 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.])
  1447. esac
  1448. fi
  1449. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  1450. AC_CONFIG_FILES([
  1451. Doxyfile
  1452. Makefile
  1453. contrib/dist/suse/tor.sh
  1454. contrib/operator-tools/tor.logrotate
  1455. contrib/dist/tor.sh
  1456. contrib/dist/torctl
  1457. contrib/dist/tor.service
  1458. src/config/torrc.sample
  1459. src/config/torrc.minimal
  1460. ])
  1461. if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
  1462. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  1463. for file in $regular_mans ; do
  1464. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  1465. echo "==================================";
  1466. echo;
  1467. echo "Building Tor has failed since manpages cannot be built.";
  1468. echo;
  1469. echo "You need asciidoc installed to be able to build the manpages.";
  1470. echo "To build without manpages, use the --disable-asciidoc argument";
  1471. echo "when calling configure.";
  1472. echo;
  1473. echo "==================================";
  1474. exit 1;
  1475. fi
  1476. done
  1477. fi
  1478. AC_OUTPUT
  1479. if test -x /usr/bin/perl && test -x ./scripts/maint/updateVersions.pl ; then
  1480. ./scripts/maint/updateVersions.pl
  1481. fi