configure.ac 60 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) 2007-2015, The Tor Project, Inc.
  4. dnl See LICENSE for licensing information
  5. AC_PREREQ([2.63])
  6. AC_INIT([tor],[0.2.9.9-dev])
  7. AC_CONFIG_SRCDIR([src/or/main.c])
  8. AC_CONFIG_MACRO_DIR([m4])
  9. # "foreign" means we don't follow GNU package layout standards
  10. # "1.11" means we require automake version 1.11 or newer
  11. # "subdir-objects" means put .o files in the same directory as the .c files
  12. AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects])
  13. m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
  14. AC_CONFIG_HEADERS([orconfig.h])
  15. AC_USE_SYSTEM_EXTENSIONS
  16. AC_CANONICAL_HOST
  17. PKG_PROG_PKG_CONFIG
  18. if test -f "/etc/redhat-release"; then
  19. if test -f "/usr/kerberos/include"; then
  20. CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
  21. fi
  22. fi
  23. # Not a no-op; we want to make sure that CPPFLAGS is set before we use
  24. # the += operator on it in src/or/Makefile.am
  25. CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
  26. AC_ARG_ENABLE(openbsd-malloc,
  27. AS_HELP_STRING(--enable-openbsd-malloc, [use malloc code from OpenBSD. Linux only]))
  28. AC_ARG_ENABLE(static-openssl,
  29. AS_HELP_STRING(--enable-static-openssl, [link against a static openssl library. Requires --with-openssl-dir]))
  30. AC_ARG_ENABLE(static-libevent,
  31. AS_HELP_STRING(--enable-static-libevent, [link against a static libevent library. Requires --with-libevent-dir]))
  32. AC_ARG_ENABLE(static-zlib,
  33. AS_HELP_STRING(--enable-static-zlib, [link against a static zlib library. Requires --with-zlib-dir]))
  34. AC_ARG_ENABLE(static-tor,
  35. AS_HELP_STRING(--enable-static-tor, [create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir]))
  36. AC_ARG_ENABLE(unittests,
  37. AS_HELP_STRING(--disable-unittests, [don't build unit tests for Tor. Risky!]))
  38. AC_ARG_ENABLE(coverage,
  39. AS_HELP_STRING(--enable-coverage, [enable coverage support in the unit-test build]))
  40. AC_ARG_ENABLE(asserts-in-tests,
  41. AS_HELP_STRING(--disable-asserts-in-tests, [disable tor_assert() calls in the unit tests, for branch coverage]))
  42. AC_ARG_ENABLE(system-torrc,
  43. AS_HELP_STRING(--disable-system-torrc, [don't look for a system-wide torrc file]))
  44. if test "x$enable_coverage" != "xyes" -a "x$enable_asserts_in_tests" = "xno" ; then
  45. AC_MSG_ERROR([Can't disable assertions outside of coverage build])
  46. fi
  47. AM_CONDITIONAL(UNITTESTS_ENABLED, test "x$enable_unittests" != "xno")
  48. AM_CONDITIONAL(COVERAGE_ENABLED, test "x$enable_coverage" = "xyes")
  49. AM_CONDITIONAL(DISABLE_ASSERTS_IN_UNIT_TESTS, test "x$enable_asserts_in_tests" = "xno")
  50. if test "$enable_static_tor" = "yes"; then
  51. enable_static_libevent="yes";
  52. enable_static_openssl="yes";
  53. enable_static_zlib="yes";
  54. CFLAGS="$CFLAGS -static"
  55. fi
  56. if test "$enable_system_torrc" = "no"; then
  57. AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
  58. [Defined if we're not going to look for a torrc in SYSCONF])
  59. fi
  60. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test "x$enable_openbsd_malloc" = "xyes")
  61. AC_ARG_ENABLE(asciidoc,
  62. AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
  63. [case "${enableval}" in
  64. "yes") asciidoc=true ;;
  65. "no") asciidoc=false ;;
  66. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  67. esac], [asciidoc=true])
  68. # systemd notify support
  69. AC_ARG_ENABLE(systemd,
  70. AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
  71. [case "${enableval}" in
  72. "yes") systemd=true ;;
  73. "no") systemd=false ;;
  74. * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
  75. esac], [systemd=auto])
  76. # systemd support
  77. if test "x$enable_systemd" = "xno"; then
  78. have_systemd=no;
  79. else
  80. PKG_CHECK_MODULES(SYSTEMD,
  81. [libsystemd-daemon],
  82. have_systemd=yes,
  83. have_systemd=no)
  84. if test "x$have_systemd" = "xno"; then
  85. AC_MSG_NOTICE([Okay, checking for systemd a different way...])
  86. PKG_CHECK_MODULES(SYSTEMD,
  87. [libsystemd],
  88. have_systemd=yes,
  89. have_systemd=no)
  90. fi
  91. fi
  92. if test "x$have_systemd" = "xyes"; then
  93. AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
  94. TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
  95. TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
  96. PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
  97. [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
  98. fi
  99. AC_SUBST(TOR_SYSTEMD_CFLAGS)
  100. AC_SUBST(TOR_SYSTEMD_LIBS)
  101. if test "x$enable_systemd" = "xyes" -a "x$have_systemd" != "xyes" ; then
  102. AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
  103. fi
  104. case "$host" in
  105. *-*-solaris* )
  106. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  107. ;;
  108. esac
  109. AC_ARG_ENABLE(gcc-warnings,
  110. AS_HELP_STRING(--enable-gcc-warnings, [deprecated alias for enable-fatal-warnings]))
  111. AC_ARG_ENABLE(fatal-warnings,
  112. AS_HELP_STRING(--enable-fatal-warnings, [tell the compiler to treat all warnings as errors.]))
  113. AC_ARG_ENABLE(gcc-warnings-advisory,
  114. AS_HELP_STRING(--disable-gcc-warnings-advisory, [disable the regular verbose warnings]))
  115. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  116. AC_ARG_ENABLE(gcc-hardening,
  117. AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
  118. AC_ARG_ENABLE(expensive-hardening,
  119. AS_HELP_STRING(--enable-expensive-hardening, [enable more expensive compiler hardening; makes Tor slower]))
  120. dnl Linker hardening options
  121. dnl Currently these options are ELF specific - you can't use this with MacOSX
  122. AC_ARG_ENABLE(linker-hardening,
  123. AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
  124. AC_ARG_ENABLE(local-appdata,
  125. AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
  126. if test "$enable_local_appdata" = "yes"; then
  127. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  128. [Defined if we default to host local appdata paths on Windows])
  129. fi
  130. # Tor2web mode flag
  131. AC_ARG_ENABLE(tor2web-mode,
  132. AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
  133. [if test "x$enableval" = "xyes"; then
  134. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  135. fi])
  136. AC_ARG_ENABLE(tool-name-check,
  137. AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
  138. AC_ARG_ENABLE(seccomp,
  139. AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
  140. AC_ARG_ENABLE(libscrypt,
  141. AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
  142. dnl check for the correct "ar" when cross-compiling
  143. AN_MAKEVAR([AR], [AC_PROG_AR])
  144. AN_PROGRAM([ar], [AC_PROG_AR])
  145. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
  146. AC_PROG_AR
  147. dnl Check whether the above macro has settled for a simply named tool even
  148. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  149. dnl because that will find any cc on the system, not only the cross-compiler,
  150. dnl and then verify that a binary built with this compiler runs on the
  151. dnl build system. It will then come to the false conclusion that we're not
  152. dnl cross-compiling.
  153. if test "x$enable_tool_name_check" != "xno"; then
  154. if test "x$ac_tool_warned" = "xyes"; then
  155. 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.)])
  156. elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
  157. 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.)])
  158. fi
  159. fi
  160. AC_PROG_CC
  161. AC_PROG_CPP
  162. AC_PROG_MAKE_SET
  163. AC_PROG_RANLIB
  164. AC_PATH_PROG([PERL], [perl])
  165. dnl autoconf 2.59 appears not to support AC_PROG_SED
  166. AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
  167. dnl check for asciidoc and a2x
  168. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  169. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  170. AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
  171. AM_CONDITIONAL(USE_FW_HELPER, test "x$natpmp" = "xtrue" || test "x$upnp" = "xtrue")
  172. AM_CONDITIONAL(NAT_PMP, test "x$natpmp" = "xtrue")
  173. AM_CONDITIONAL(MINIUPNPC, test "x$upnp" = "xtrue")
  174. AM_PROG_CC_C_O
  175. AC_PROG_CC_C99
  176. AC_ARG_VAR([PYTHON], [path to Python binary])
  177. AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
  178. if test "x$PYTHON" = "x"; then
  179. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  180. fi
  181. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  182. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  183. AC_C_FLEXIBLE_ARRAY_MEMBER
  184. ], [
  185. dnl Maybe we've got an old autoconf...
  186. AC_CACHE_CHECK([for flexible array members],
  187. tor_cv_c_flexarray,
  188. [AC_COMPILE_IFELSE(
  189. AC_LANG_PROGRAM([
  190. struct abc { int a; char b[]; };
  191. ], [
  192. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  193. def->b[0] = 33;
  194. ]),
  195. [tor_cv_c_flexarray=yes],
  196. [tor_cv_c_flexarray=no])])
  197. if test "$tor_cv_flexarray" = "yes"; then
  198. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  199. else
  200. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  201. fi
  202. ])
  203. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  204. tor_cv_c_c99_decl,
  205. [AC_COMPILE_IFELSE(
  206. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  207. [tor_cv_c_c99_decl=yes],
  208. [tor_cv_c_c99_decl=no] )])
  209. if test "$tor_cv_c_c99_decl" != "yes"; then
  210. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  211. fi
  212. AC_CACHE_CHECK([for working C99 designated initializers],
  213. tor_cv_c_c99_designated_init,
  214. [AC_COMPILE_IFELSE(
  215. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  216. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  217. [tor_cv_c_c99_designated_init=yes],
  218. [tor_cv_c_c99_designated_init=no] )])
  219. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  220. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  221. fi
  222. TORUSER=_tor
  223. AC_ARG_WITH(tor-user,
  224. AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
  225. [
  226. TORUSER=$withval
  227. ]
  228. )
  229. AC_SUBST(TORUSER)
  230. TORGROUP=_tor
  231. AC_ARG_WITH(tor-group,
  232. AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
  233. [
  234. TORGROUP=$withval
  235. ]
  236. )
  237. AC_SUBST(TORGROUP)
  238. dnl If _WIN32 is defined and non-zero, we are building for win32
  239. AC_MSG_CHECKING([for win32])
  240. AC_RUN_IFELSE([AC_LANG_SOURCE([
  241. int main(int c, char **v) {
  242. #ifdef _WIN32
  243. #if _WIN32
  244. return 0;
  245. #else
  246. return 1;
  247. #endif
  248. #else
  249. return 2;
  250. #endif
  251. }])],
  252. bwin32=true; AC_MSG_RESULT([yes]),
  253. bwin32=false; AC_MSG_RESULT([no]),
  254. bwin32=cross; AC_MSG_RESULT([cross])
  255. )
  256. if test "$bwin32" = "cross"; then
  257. AC_MSG_CHECKING([for win32 (cross)])
  258. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  259. #ifdef _WIN32
  260. int main(int c, char **v) {return 0;}
  261. #else
  262. #error
  263. int main(int c, char **v) {return x(y);}
  264. #endif
  265. ])],
  266. bwin32=true; AC_MSG_RESULT([yes]),
  267. bwin32=false; AC_MSG_RESULT([no]))
  268. fi
  269. AH_BOTTOM([
  270. #ifdef _WIN32
  271. /* Defined to access windows functions and definitions for >=WinXP */
  272. # ifndef WINVER
  273. # define WINVER 0x0501
  274. # endif
  275. /* Defined to access _other_ windows functions and definitions for >=WinXP */
  276. # ifndef _WIN32_WINNT
  277. # define _WIN32_WINNT 0x0501
  278. # endif
  279. /* Defined to avoid including some windows headers as part of Windows.h */
  280. # ifndef WIN32_LEAN_AND_MEAN
  281. # define WIN32_LEAN_AND_MEAN 1
  282. # endif
  283. #endif
  284. ])
  285. AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
  286. dnl Enable C99 when compiling with MIPSpro
  287. AC_MSG_CHECKING([for MIPSpro compiler])
  288. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  289. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  290. #error
  291. return x(y);
  292. #endif
  293. ])],
  294. bmipspro=false; AC_MSG_RESULT(no),
  295. bmipspro=true; AC_MSG_RESULT(yes))
  296. if test "$bmipspro" = "true"; then
  297. CFLAGS="$CFLAGS -c99"
  298. fi
  299. AC_C_BIGENDIAN
  300. AC_SEARCH_LIBS(socket, [socket network])
  301. AC_SEARCH_LIBS(gethostbyname, [nsl])
  302. AC_SEARCH_LIBS(dlopen, [dl])
  303. AC_SEARCH_LIBS(inet_aton, [resolv])
  304. AC_SEARCH_LIBS(backtrace, [execinfo])
  305. saved_LIBS="$LIBS"
  306. AC_SEARCH_LIBS([clock_gettime], [rt])
  307. if test "$LIBS" != "$saved_LIBS"; then
  308. # Looks like we need -lrt for clock_gettime().
  309. have_rt=yes
  310. fi
  311. AC_SEARCH_LIBS(pthread_create, [pthread])
  312. AC_SEARCH_LIBS(pthread_detach, [pthread])
  313. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  314. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  315. AC_CHECK_FUNCS(
  316. _NSGetEnviron \
  317. RtlSecureZeroMemory \
  318. SecureZeroMemory \
  319. accept4 \
  320. backtrace \
  321. backtrace_symbols_fd \
  322. eventfd \
  323. explicit_bzero \
  324. timingsafe_memcmp \
  325. flock \
  326. ftime \
  327. getaddrinfo \
  328. getifaddrs \
  329. getpass \
  330. getrlimit \
  331. gettimeofday \
  332. gmtime_r \
  333. htonll \
  334. inet_aton \
  335. ioctl \
  336. issetugid \
  337. llround \
  338. localtime_r \
  339. lround \
  340. memmem \
  341. memset_s \
  342. pipe \
  343. pipe2 \
  344. prctl \
  345. readpassphrase \
  346. rint \
  347. sigaction \
  348. socketpair \
  349. statvfs \
  350. strlcat \
  351. strlcpy \
  352. strnlen \
  353. strptime \
  354. strtok_r \
  355. strtoull \
  356. sysconf \
  357. sysctl \
  358. truncate \
  359. uname \
  360. usleep \
  361. vasprintf \
  362. _vscprintf
  363. )
  364. # Apple messed up when they added two functions functions in Sierra: they
  365. # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
  366. # checks. So we should only probe for those functions if we are sure that we
  367. # are not targetting OSX 10.11 or earlier.
  368. AC_MSG_CHECKING([for a pre-Sierra OSX build target])
  369. AC_TRY_COMPILE([
  370. #ifdef __APPLE__
  371. # include <AvailabilityMacros.h>
  372. # ifndef MAC_OS_X_VERSION_10_12
  373. # define MAC_OS_X_VERSION_10_12 101200
  374. # endif
  375. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  376. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  377. # error "Running on Mac OSX 10.11 or earlier"
  378. # endif
  379. # endif
  380. #endif
  381. ], [],
  382. [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
  383. [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
  384. if test "$on_macos_pre_10_12" = "no"; then
  385. AC_CHECK_FUNCS(
  386. clock_gettime \
  387. getentropy \
  388. )
  389. fi
  390. if test "$bwin32" != "true"; then
  391. AC_CHECK_HEADERS(pthread.h)
  392. AC_CHECK_FUNCS(pthread_create)
  393. AC_CHECK_FUNCS(pthread_condattr_setclock)
  394. fi
  395. if test "$bwin32" = "true"; then
  396. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  397. #include <windows.h>
  398. #include <conio.h>
  399. #include <wchar.h>
  400. ])
  401. fi
  402. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  403. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  404. dnl ------------------------------------------------------
  405. dnl Where do you live, libevent? And how do we call you?
  406. if test "$bwin32" = "true"; then
  407. TOR_LIB_WS32=-lws2_32
  408. TOR_LIB_IPHLPAPI=-liphlpapi
  409. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  410. # think it's actually necessary.
  411. TOR_LIB_GDI=-lgdi32
  412. else
  413. TOR_LIB_WS32=
  414. TOR_LIB_GDI=
  415. fi
  416. AC_SUBST(TOR_LIB_WS32)
  417. AC_SUBST(TOR_LIB_GDI)
  418. AC_SUBST(TOR_LIB_IPHLPAPI)
  419. tor_libevent_pkg_redhat="libevent"
  420. tor_libevent_pkg_debian="libevent-dev"
  421. tor_libevent_devpkg_redhat="libevent-devel"
  422. tor_libevent_devpkg_debian="libevent-dev"
  423. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  424. dnl linking for static builds.
  425. STATIC_LIBEVENT_FLAGS=""
  426. if test "$enable_static_libevent" = "yes"; then
  427. if test "$have_rt" = "yes"; then
  428. STATIC_LIBEVENT_FLAGS=" -lrt "
  429. fi
  430. fi
  431. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  432. #ifdef _WIN32
  433. #include <winsock2.h>
  434. #endif
  435. #include <sys/time.h>
  436. #include <sys/types.h>
  437. #include <event2/event.h>], [
  438. #ifdef _WIN32
  439. #include <winsock2.h>
  440. #endif
  441. struct event_base;
  442. struct event_base *event_base_new(void);],
  443. [
  444. #ifdef _WIN32
  445. {WSADATA d; WSAStartup(0x101,&d); }
  446. #endif
  447. event_base_new();
  448. ], [--with-libevent-dir], [/opt/libevent])
  449. dnl Determine the incantation needed to link libevent.
  450. save_LIBS="$LIBS"
  451. save_LDFLAGS="$LDFLAGS"
  452. save_CPPFLAGS="$CPPFLAGS"
  453. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  454. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  455. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  456. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  457. if test "$enable_static_libevent" = "yes"; then
  458. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  459. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  460. else
  461. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  462. fi
  463. else
  464. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  465. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  466. AC_SEARCH_LIBS(evdns_base_new, [event event_extra], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for evdns_base_new"))
  467. if test "$ac_cv_search_event_new" != "none required"; then
  468. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  469. fi
  470. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  471. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  472. fi
  473. else
  474. AC_MSG_ERROR("libevent2 is required but the headers could not be found")
  475. fi
  476. fi
  477. dnl Now check for particular libevent functions.
  478. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
  479. evutil_secure_rng_add_bytes \
  480. ])
  481. LIBS="$save_LIBS"
  482. LDFLAGS="$save_LDFLAGS"
  483. CPPFLAGS="$save_CPPFLAGS"
  484. dnl Check that libevent is at least at version 2.0.10, the first stable
  485. dnl release of its series
  486. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  487. AC_MSG_CHECKING([whether Libevent is new enough])
  488. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  489. #include <event2/event.h>
  490. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  491. #error
  492. int x = y(zz);
  493. #else
  494. int x = 1;
  495. #endif
  496. ])], [ AC_MSG_RESULT([yes]) ],
  497. [ AC_MSG_RESULT([no])
  498. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  499. LIBS="$save_LIBS"
  500. LDFLAGS="$save_LDFLAGS"
  501. CPPFLAGS="$save_CPPFLAGS"
  502. AC_SUBST(TOR_LIBEVENT_LIBS)
  503. dnl ------------------------------------------------------
  504. dnl Where do you live, libm?
  505. dnl On some platforms (Haiku/BeOS) the math library is
  506. dnl part of libroot. In which case don't link against lm
  507. TOR_LIB_MATH=""
  508. save_LIBS="$LIBS"
  509. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  510. if test "$ac_cv_search_pow" != "none required"; then
  511. TOR_LIB_MATH="$ac_cv_search_pow"
  512. fi
  513. LIBS="$save_LIBS"
  514. AC_SUBST(TOR_LIB_MATH)
  515. dnl ------------------------------------------------------
  516. dnl Where do you live, openssl? And how do we call you?
  517. tor_openssl_pkg_redhat="openssl"
  518. tor_openssl_pkg_debian="libssl-dev"
  519. tor_openssl_devpkg_redhat="openssl-devel"
  520. tor_openssl_devpkg_debian="libssl-dev"
  521. ALT_openssl_WITHVAL=""
  522. AC_ARG_WITH(ssl-dir,
  523. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  524. [
  525. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  526. ALT_openssl_WITHVAL="$withval"
  527. fi
  528. ])
  529. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
  530. [#include <openssl/rand.h>],
  531. [void RAND_add(const void *buf, int num, double entropy);],
  532. [RAND_add((void*)0,0,0);], [],
  533. [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
  534. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  535. if test "$enable_static_openssl" = "yes"; then
  536. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  537. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  538. else
  539. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  540. fi
  541. else
  542. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  543. fi
  544. AC_SUBST(TOR_OPENSSL_LIBS)
  545. dnl Now check for particular openssl functions.
  546. save_LIBS="$LIBS"
  547. save_LDFLAGS="$LDFLAGS"
  548. save_CPPFLAGS="$CPPFLAGS"
  549. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  550. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  551. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  552. AC_TRY_COMPILE([
  553. #include <openssl/opensslv.h>
  554. #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
  555. #error "too old"
  556. #endif
  557. ], [],
  558. [ : ],
  559. [ AC_ERROR([OpenSSL is too old. We require 1.0.1 or later. You can specify a path to a newer one with --with-openssl-dir.]) ])
  560. AC_TRY_COMPILE([
  561. #include <openssl/opensslv.h>
  562. #include <openssl/evp.h>
  563. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  564. #error "no ECC"
  565. #endif
  566. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  567. #error "curves unavailable"
  568. #endif
  569. ], [],
  570. [ : ],
  571. [ AC_ERROR([OpenSSL is built without full ECC support, including curves P256 and P224. You can specify a path to one with ECC support with --with-openssl-dir.]) ])
  572. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  573. [#include <openssl/ssl.h>
  574. ])
  575. AC_CHECK_FUNCS([ \
  576. SSL_SESSION_get_master_key \
  577. SSL_get_server_random \
  578. SSL_get_client_ciphers \
  579. SSL_get_client_random \
  580. SSL_CIPHER_find \
  581. TLS_method
  582. ])
  583. dnl Check if OpenSSL has scrypt implementation.
  584. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  585. LIBS="$save_LIBS"
  586. LDFLAGS="$save_LDFLAGS"
  587. CPPFLAGS="$save_CPPFLAGS"
  588. dnl ------------------------------------------------------
  589. dnl Where do you live, zlib? And how do we call you?
  590. tor_zlib_pkg_redhat="zlib"
  591. tor_zlib_pkg_debian="zlib1g"
  592. tor_zlib_devpkg_redhat="zlib-devel"
  593. tor_zlib_devpkg_debian="zlib1g-dev"
  594. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  595. [#include <zlib.h>],
  596. [const char * zlibVersion(void);],
  597. [zlibVersion();], [--with-zlib-dir],
  598. [/opt/zlib])
  599. if test "$enable_static_zlib" = "yes"; then
  600. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  601. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  602. using --enable-static-zlib")
  603. else
  604. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  605. fi
  606. else
  607. TOR_ZLIB_LIBS="-lz"
  608. fi
  609. AC_SUBST(TOR_ZLIB_LIBS)
  610. dnl ----------------------------------------------------------------------
  611. dnl Check if libcap is available for capabilities.
  612. tor_cap_pkg_debian="libcap2"
  613. tor_cap_pkg_redhat="libcap"
  614. tor_cap_devpkg_debian="libcap-dev"
  615. tor_cap_devpkg_redhat="libcap-devel"
  616. AC_CHECK_LIB([cap], [cap_init], [],
  617. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  618. )
  619. AC_CHECK_FUNCS(cap_set_proc)
  620. dnl ---------------------------------------------------------------------
  621. dnl Now that we know about our major libraries, we can check for compiler
  622. dnl and linker hardening options. We need to do this with the libraries known,
  623. dnl since sometimes the linker will like an option but not be willing to
  624. dnl use it with a build of a library.
  625. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  626. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_CAP_LIBS"
  627. CFLAGS_FTRAPV=
  628. CFLAGS_FWRAPV=
  629. CFLAGS_ASAN=
  630. CFLAGS_UBSAN=
  631. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  632. #if !defined(__clang__)
  633. #error
  634. #endif])], have_clang=yes, have_clang=no)
  635. if test "x$enable_gcc_hardening" != "xno"; then
  636. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  637. if test "x$have_clang" = "xyes"; then
  638. TOR_CHECK_CFLAGS(-Qunused-arguments)
  639. fi
  640. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  641. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  642. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  643. m4_ifdef([AS_VAR_IF],[
  644. AS_VAR_IF(can_compile, [yes],
  645. AS_VAR_IF(can_link, [yes],
  646. [],
  647. 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.)]))
  648. )])
  649. AS_VAR_POPDEF([can_link])
  650. AS_VAR_POPDEF([can_compile])
  651. TOR_CHECK_CFLAGS(-Wstack-protector)
  652. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  653. if test "$bwin32" = "false"; then
  654. TOR_CHECK_CFLAGS(-fPIE)
  655. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  656. fi
  657. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  658. fi
  659. if test "x$enable_expensive_hardening" = "xyes"; then
  660. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  661. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  662. AC_MSG_WARN([The compiler supports -ftrapv, but for some reason I was not able to link with -ftrapv. Are you missing run-time support? Run-time hardening will not work as well as it should.])
  663. fi
  664. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  665. AC_MSG_ERROR([You requested expensive hardening, but the compiler does not seem to support -ftrapv.])
  666. fi
  667. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  668. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  669. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.so, and with Clang you need libclang_rt.ubsan*])
  670. fi
  671. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  672. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  673. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.so, and with Clang you need libclang_rt.ubsan*])
  674. fi
  675. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  676. fi
  677. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  678. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  679. mulodi_fixes_ftrapv=no
  680. if test "$have_clang" = "yes"; then
  681. saved_CFLAGS="$CFLAGS"
  682. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  683. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  684. AC_LINK_IFELSE([
  685. AC_LANG_SOURCE([[
  686. #include <stdint.h>
  687. #include <stdlib.h>
  688. int main(int argc, char **argv)
  689. {
  690. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  691. * (int64_t)atoi(argv[3]);
  692. return x == 9;
  693. } ]])],
  694. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  695. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  696. if test "$ftrapv_can_link" = "no"; then
  697. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  698. AC_LINK_IFELSE([
  699. AC_LANG_SOURCE([[
  700. #include <stdint.h>
  701. #include <stdlib.h>
  702. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  703. *overflow=0;
  704. return a;
  705. }
  706. int main(int argc, char **argv)
  707. {
  708. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  709. * (int64_t)atoi(argv[3]);
  710. return x == 9;
  711. } ]])],
  712. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  713. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  714. fi
  715. CFLAGS="$saved_CFLAGS"
  716. fi
  717. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  718. dnl These cflags add bunches of branches, and we haven't been able to
  719. dnl persuade ourselves that they're suitable for code that needs to be
  720. dnl constant time.
  721. AC_SUBST(CFLAGS_BUGTRAP)
  722. dnl These cflags are variant ones sutable for code that needs to be
  723. dnl constant-time.
  724. AC_SUBST(CFLAGS_CONSTTIME)
  725. if test "x$enable_linker_hardening" != "xno"; then
  726. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  727. fi
  728. # For backtrace support
  729. TOR_CHECK_LDFLAGS(-rdynamic)
  730. dnl ------------------------------------------------------
  731. dnl Now see if we have a -fomit-frame-pointer compiler option.
  732. saved_CFLAGS="$CFLAGS"
  733. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  734. F_OMIT_FRAME_POINTER=''
  735. if test "$saved_CFLAGS" != "$CFLAGS"; then
  736. if test "x$enable_expensive_hardening" != "xyes"; then
  737. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  738. fi
  739. fi
  740. CFLAGS="$saved_CFLAGS"
  741. AC_SUBST(F_OMIT_FRAME_POINTER)
  742. dnl ------------------------------------------------------
  743. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  744. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  745. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  746. dnl code will work.
  747. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  748. dnl ============================================================
  749. dnl Check for libseccomp
  750. if test "x$enable_seccomp" != "xno"; then
  751. AC_CHECK_HEADERS([seccomp.h])
  752. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  753. fi
  754. dnl ============================================================
  755. dnl Check for libscrypt
  756. if test "x$enable_libscrypt" != "xno"; then
  757. AC_CHECK_HEADERS([libscrypt.h])
  758. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  759. AC_CHECK_FUNCS([libscrypt_scrypt])
  760. fi
  761. dnl ============================================================
  762. dnl We need an implementation of curve25519.
  763. dnl set these defaults.
  764. build_curve25519_donna=no
  765. build_curve25519_donna_c64=no
  766. use_curve25519_donna=no
  767. use_curve25519_nacl=no
  768. CURVE25519_LIBS=
  769. dnl The best choice is using curve25519-donna-c64, but that requires
  770. dnl that we
  771. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  772. tor_cv_can_use_curve25519_donna_c64,
  773. [AC_RUN_IFELSE(
  774. [AC_LANG_PROGRAM([dnl
  775. #include <stdint.h>
  776. typedef unsigned uint128_t __attribute__((mode(TI)));
  777. int func(uint64_t a, uint64_t b) {
  778. uint128_t c = ((uint128_t)a) * b;
  779. int ok = ((uint64_t)(c>>96)) == 522859 &&
  780. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  781. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  782. (((uint64_t)(c))&0xffffffffL) == 0;
  783. return ok;
  784. }
  785. ], [dnl
  786. int ok = func( ((uint64_t)2000000000) * 1000000000,
  787. ((uint64_t)1234567890) << 24);
  788. return !ok;
  789. ])],
  790. [tor_cv_can_use_curve25519_donna_c64=yes],
  791. [tor_cv_can_use_curve25519_donna_c64=no],
  792. [AC_LINK_IFELSE(
  793. [AC_LANG_PROGRAM([dnl
  794. #include <stdint.h>
  795. typedef unsigned uint128_t __attribute__((mode(TI)));
  796. int func(uint64_t a, uint64_t b) {
  797. uint128_t c = ((uint128_t)a) * b;
  798. int ok = ((uint64_t)(c>>96)) == 522859 &&
  799. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  800. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  801. (((uint64_t)(c))&0xffffffffL) == 0;
  802. return ok;
  803. }
  804. ], [dnl
  805. int ok = func( ((uint64_t)2000000000) * 1000000000,
  806. ((uint64_t)1234567890) << 24);
  807. return !ok;
  808. ])],
  809. [tor_cv_can_use_curve25519_donna_c64=cross],
  810. [tor_cv_can_use_curve25519_donna_c64=no])])])
  811. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  812. nacl/crypto_scalarmult_curve25519.h])
  813. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  814. tor_cv_can_use_curve25519_nacl,
  815. [tor_saved_LIBS="$LIBS"
  816. LIBS="$LIBS -lnacl"
  817. AC_LINK_IFELSE(
  818. [AC_LANG_PROGRAM([dnl
  819. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  820. #include <crypto_scalarmult_curve25519.h>
  821. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  822. #include <nacl/crypto_scalarmult_curve25519.h>
  823. #endif
  824. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  825. #error Hey, this is the reference implementation! That's not fast.
  826. #endif
  827. ], [
  828. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  829. ])], [tor_cv_can_use_curve25519_nacl=yes],
  830. [tor_cv_can_use_curve25519_nacl=no])
  831. LIBS="$tor_saved_LIBS" ])
  832. dnl Okay, now we need to figure out which one to actually use. Fall back
  833. dnl to curve25519-donna.c
  834. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  835. build_curve25519_donna_c64=yes
  836. use_curve25519_donna=yes
  837. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  838. use_curve25519_nacl=yes
  839. CURVE25519_LIBS=-lnacl
  840. else
  841. build_curve25519_donna=yes
  842. use_curve25519_donna=yes
  843. fi
  844. if test "x$use_curve25519_donna" = "xyes"; then
  845. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  846. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  847. fi
  848. if test "x$use_curve25519_nacl" = "xyes"; then
  849. AC_DEFINE(USE_CURVE25519_NACL, 1,
  850. [Defined if we should use a curve25519 from nacl])
  851. fi
  852. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  853. test "x$build_curve25519_donna" = "xyes")
  854. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  855. test "x$build_curve25519_donna_c64" = "xyes")
  856. AC_SUBST(CURVE25519_LIBS)
  857. dnl Make sure to enable support for large off_t if available.
  858. AC_SYS_LARGEFILE
  859. AC_CHECK_HEADERS([assert.h \
  860. errno.h \
  861. fcntl.h \
  862. signal.h \
  863. string.h \
  864. sys/capability.h \
  865. sys/fcntl.h \
  866. sys/stat.h \
  867. sys/time.h \
  868. sys/types.h \
  869. time.h \
  870. unistd.h \
  871. arpa/inet.h \
  872. crt_externs.h \
  873. execinfo.h \
  874. grp.h \
  875. ifaddrs.h \
  876. inttypes.h \
  877. limits.h \
  878. linux/types.h \
  879. machine/limits.h \
  880. malloc.h \
  881. malloc/malloc.h \
  882. malloc_np.h \
  883. netdb.h \
  884. netinet/in.h \
  885. netinet/in6.h \
  886. pwd.h \
  887. readpassphrase.h \
  888. stdint.h \
  889. sys/eventfd.h \
  890. sys/file.h \
  891. sys/ioctl.h \
  892. sys/limits.h \
  893. sys/mman.h \
  894. sys/param.h \
  895. sys/prctl.h \
  896. sys/random.h \
  897. sys/resource.h \
  898. sys/select.h \
  899. sys/socket.h \
  900. sys/statvfs.h \
  901. sys/syscall.h \
  902. sys/sysctl.h \
  903. sys/syslimits.h \
  904. sys/time.h \
  905. sys/types.h \
  906. sys/un.h \
  907. sys/utime.h \
  908. sys/wait.h \
  909. syslog.h \
  910. utime.h])
  911. AC_CHECK_HEADERS(sys/param.h)
  912. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  913. [#ifdef HAVE_SYS_TYPES_H
  914. #include <sys/types.h>
  915. #endif
  916. #ifdef HAVE_SYS_SOCKET_H
  917. #include <sys/socket.h>
  918. #endif])
  919. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  920. [#ifdef HAVE_SYS_TYPES_H
  921. #include <sys/types.h>
  922. #endif
  923. #ifdef HAVE_SYS_SOCKET_H
  924. #include <sys/socket.h>
  925. #endif
  926. #ifdef HAVE_NET_IF_H
  927. #include <net/if.h>
  928. #endif
  929. #ifdef HAVE_NETINET_IN_H
  930. #include <netinet/in.h>
  931. #endif])
  932. AC_CHECK_HEADERS(linux/if.h,[],[],
  933. [
  934. #ifdef HAVE_SYS_SOCKET_H
  935. #include <sys/socket.h>
  936. #endif
  937. ])
  938. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  939. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  940. [#ifdef HAVE_SYS_TYPES_H
  941. #include <sys/types.h>
  942. #endif
  943. #ifdef HAVE_SYS_SOCKET_H
  944. #include <sys/socket.h>
  945. #endif
  946. #ifdef HAVE_LIMITS_H
  947. #include <limits.h>
  948. #endif
  949. #ifdef HAVE_LINUX_TYPES_H
  950. #include <linux/types.h>
  951. #endif
  952. #ifdef HAVE_NETINET_IN6_H
  953. #include <netinet/in6.h>
  954. #endif
  955. #ifdef HAVE_NETINET_IN_H
  956. #include <netinet/in.h>
  957. #endif])
  958. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  959. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  960. [#ifdef HAVE_SYS_TYPES_H
  961. #include <sys/types.h>
  962. #endif
  963. #ifdef HAVE_SYS_SOCKET_H
  964. #include <sys/socket.h>
  965. #endif
  966. #ifdef HAVE_LIMITS_H
  967. #include <limits.h>
  968. #endif
  969. #ifdef HAVE_LINUX_TYPES_H
  970. #include <linux/types.h>
  971. #endif
  972. #ifdef HAVE_NETINET_IN6_H
  973. #include <netinet/in6.h>
  974. #endif
  975. #ifdef HAVE_NETINET_IN_H
  976. #include <netinet/in.h>
  977. #endif
  978. #ifdef HAVE_LINUX_IF_H
  979. #include <linux/if.h>
  980. #endif])
  981. transparent_ok=0
  982. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  983. transparent_ok=1
  984. fi
  985. if test "x$linux_netfilter_ipv4" = "x1"; then
  986. transparent_ok=1
  987. fi
  988. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  989. transparent_ok=1
  990. fi
  991. if test "x$transparent_ok" = "x1"; then
  992. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  993. case "$host" in
  994. *-*-openbsd* | *-*-bitrig*)
  995. AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
  996. esac
  997. else
  998. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  999. fi
  1000. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1001. [#ifdef HAVE_SYS_TYPES_H
  1002. #include <sys/types.h>
  1003. #endif
  1004. #ifdef HAVE_SYS_TIME_H
  1005. #include <sys/time.h>
  1006. #endif])
  1007. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  1008. dnl Watch out.
  1009. AC_CHECK_SIZEOF(int8_t)
  1010. AC_CHECK_SIZEOF(int16_t)
  1011. AC_CHECK_SIZEOF(int32_t)
  1012. AC_CHECK_SIZEOF(int64_t)
  1013. AC_CHECK_SIZEOF(uint8_t)
  1014. AC_CHECK_SIZEOF(uint16_t)
  1015. AC_CHECK_SIZEOF(uint32_t)
  1016. AC_CHECK_SIZEOF(uint64_t)
  1017. AC_CHECK_SIZEOF(intptr_t)
  1018. AC_CHECK_SIZEOF(uintptr_t)
  1019. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  1020. AC_CHECK_SIZEOF(char)
  1021. AC_CHECK_SIZEOF(short)
  1022. AC_CHECK_SIZEOF(int)
  1023. AC_CHECK_SIZEOF(long)
  1024. AC_CHECK_SIZEOF(long long)
  1025. AC_CHECK_SIZEOF(__int64)
  1026. AC_CHECK_SIZEOF(void *)
  1027. AC_CHECK_SIZEOF(time_t)
  1028. AC_CHECK_SIZEOF(size_t)
  1029. AC_CHECK_SIZEOF(pid_t)
  1030. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1031. AC_PC_FROM_UCONTEXT([:])
  1032. dnl used to include sockaddr_storage, but everybody has that.
  1033. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1034. [#ifdef HAVE_SYS_TYPES_H
  1035. #include <sys/types.h>
  1036. #endif
  1037. #ifdef HAVE_NETINET_IN_H
  1038. #include <netinet/in.h>
  1039. #endif
  1040. #ifdef HAVE_NETINET_IN6_H
  1041. #include <netinet/in6.h>
  1042. #endif
  1043. #ifdef HAVE_SYS_SOCKET_H
  1044. #include <sys/socket.h>
  1045. #endif
  1046. #ifdef _WIN32
  1047. #define _WIN32_WINNT 0x0501
  1048. #define WIN32_LEAN_AND_MEAN
  1049. #include <winsock2.h>
  1050. #include <ws2tcpip.h>
  1051. #endif
  1052. ])
  1053. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1054. [#ifdef HAVE_SYS_TYPES_H
  1055. #include <sys/types.h>
  1056. #endif
  1057. #ifdef HAVE_NETINET_IN_H
  1058. #include <netinet/in.h>
  1059. #endif
  1060. #ifdef HAVE_NETINET_IN6_H
  1061. #include <netinet/in6.h>
  1062. #endif
  1063. #ifdef HAVE_SYS_SOCKET_H
  1064. #include <sys/socket.h>
  1065. #endif
  1066. #ifdef _WIN32
  1067. #define _WIN32_WINNT 0x0501
  1068. #define WIN32_LEAN_AND_MEAN
  1069. #include <winsock2.h>
  1070. #include <ws2tcpip.h>
  1071. #endif
  1072. ])
  1073. AC_CHECK_TYPES([rlim_t], , ,
  1074. [#ifdef HAVE_SYS_TYPES_H
  1075. #include <sys/types.h>
  1076. #endif
  1077. #ifdef HAVE_SYS_TIME_H
  1078. #include <sys/time.h>
  1079. #endif
  1080. #ifdef HAVE_SYS_RESOURCE_H
  1081. #include <sys/resource.h>
  1082. #endif
  1083. ])
  1084. AX_CHECK_SIGN([time_t],
  1085. [ : ],
  1086. [ : ], [
  1087. #ifdef HAVE_SYS_TYPES_H
  1088. #include <sys/types.h>
  1089. #endif
  1090. #ifdef HAVE_SYS_TIME_H
  1091. #include <sys/time.h>
  1092. #endif
  1093. #ifdef HAVE_TIME_H
  1094. #include <time.h>
  1095. #endif
  1096. ])
  1097. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1098. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1099. fi
  1100. AX_CHECK_SIGN([size_t],
  1101. [ tor_cv_size_t_signed=yes ],
  1102. [ tor_cv_size_t_signed=no ], [
  1103. #ifdef HAVE_SYS_TYPES_H
  1104. #include <sys/types.h>
  1105. #endif
  1106. ])
  1107. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1108. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1109. fi
  1110. AX_CHECK_SIGN([enum always],
  1111. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1112. [ : ], [
  1113. enum always { AAA, BBB, CCC };
  1114. ])
  1115. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1116. #ifdef HAVE_SYS_SOCKET_H
  1117. #include <sys/socket.h>
  1118. #endif
  1119. ])
  1120. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1121. AC_CHECK_SIZEOF(cell_t)
  1122. # Now make sure that NULL can be represented as zero bytes.
  1123. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1124. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1125. [[#include <stdlib.h>
  1126. #include <string.h>
  1127. #include <stdio.h>
  1128. #ifdef HAVE_STDDEF_H
  1129. #include <stddef.h>
  1130. #endif
  1131. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1132. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1133. [tor_cv_null_is_zero=yes],
  1134. [tor_cv_null_is_zero=no],
  1135. [tor_cv_null_is_zero=cross])])
  1136. if test "$tor_cv_null_is_zero" = "cross"; then
  1137. # Cross-compiling; let's hope that the target isn't raving mad.
  1138. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1139. fi
  1140. if test "$tor_cv_null_is_zero" != "no"; then
  1141. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1142. [Define to 1 iff memset(0) sets pointers to NULL])
  1143. fi
  1144. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1145. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1146. [[#include <stdlib.h>
  1147. #include <string.h>
  1148. #include <stdio.h>
  1149. #ifdef HAVE_STDDEF_H
  1150. #include <stddef.h>
  1151. #endif
  1152. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1153. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1154. [tor_cv_dbl0_is_zero=yes],
  1155. [tor_cv_dbl0_is_zero=no],
  1156. [tor_cv_dbl0_is_zero=cross])])
  1157. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1158. # Cross-compiling; let's hope that the target isn't raving mad.
  1159. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1160. fi
  1161. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1162. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1163. [Define to 1 iff memset(0) sets doubles to 0.0])
  1164. fi
  1165. # And what happens when we malloc zero?
  1166. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1167. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1168. [[#include <stdlib.h>
  1169. #include <string.h>
  1170. #include <stdio.h>
  1171. #ifdef HAVE_STDDEF_H
  1172. #include <stddef.h>
  1173. #endif
  1174. int main () { return malloc(0)?0:1; }]])],
  1175. [tor_cv_malloc_zero_works=yes],
  1176. [tor_cv_malloc_zero_works=no],
  1177. [tor_cv_malloc_zero_works=cross])])
  1178. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1179. # Cross-compiling; let's hope that the target isn't raving mad.
  1180. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1181. fi
  1182. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1183. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1184. [Define to 1 iff malloc(0) returns a pointer])
  1185. fi
  1186. # whether we seem to be in a 2s-complement world.
  1187. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1188. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1189. [[int main () { int problem = ((-99) != (~99)+1);
  1190. return problem ? 1 : 0; }]])],
  1191. [tor_cv_twos_complement=yes],
  1192. [tor_cv_twos_complement=no],
  1193. [tor_cv_twos_complement=cross])])
  1194. if test "$tor_cv_twos_complement" = "cross"; then
  1195. # Cross-compiling; let's hope that the target isn't raving mad.
  1196. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1197. fi
  1198. if test "$tor_cv_twos_complement" != "no"; then
  1199. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1200. [Define to 1 iff we represent negative integers with
  1201. two's complement])
  1202. fi
  1203. # What does shifting a negative value do?
  1204. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1205. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1206. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1207. [tor_cv_sign_extend=yes],
  1208. [tor_cv_sign_extend=no],
  1209. [tor_cv_sign_extend=cross])])
  1210. if test "$tor_cv_sign_extend" = "cross"; then
  1211. # Cross-compiling; let's hope that the target isn't raving mad.
  1212. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1213. fi
  1214. if test "$tor_cv_sign_extend" != "no"; then
  1215. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1216. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1217. fi
  1218. # Whether we should use the dmalloc memory allocation debugging library.
  1219. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1220. AC_ARG_WITH(dmalloc,
  1221. AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
  1222. [if [[ "$withval" = "yes" ]]; then
  1223. dmalloc=1
  1224. AC_MSG_RESULT(yes)
  1225. else
  1226. dmalloc=1
  1227. AC_MSG_RESULT(no)
  1228. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1229. )
  1230. if [[ $dmalloc -eq 1 ]]; then
  1231. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1232. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1233. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1234. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1235. fi
  1236. AC_ARG_WITH(tcmalloc,
  1237. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
  1238. [ tcmalloc=yes ], [ tcmalloc=no ])
  1239. if test "x$tcmalloc" = "xyes"; then
  1240. LDFLAGS="-ltcmalloc $LDFLAGS"
  1241. fi
  1242. using_custom_malloc=no
  1243. if test "x$enable_openbsd_malloc" = "xyes"; then
  1244. using_custom_malloc=yes
  1245. fi
  1246. if test "x$tcmalloc" = "xyes"; then
  1247. using_custom_malloc=yes
  1248. fi
  1249. if test "$using_custom_malloc" = "no"; then
  1250. AC_CHECK_FUNCS(mallinfo)
  1251. fi
  1252. # By default, we're going to assume we don't have mlockall()
  1253. # bionic and other platforms have various broken mlockall subsystems.
  1254. # Some systems don't have a working mlockall, some aren't linkable,
  1255. # and some have it but don't declare it.
  1256. AC_CHECK_FUNCS(mlockall)
  1257. AC_CHECK_DECLS([mlockall], , , [
  1258. #ifdef HAVE_SYS_MMAN_H
  1259. #include <sys/mman.h>
  1260. #endif])
  1261. # Allow user to specify an alternate syslog facility
  1262. AC_ARG_WITH(syslog-facility,
  1263. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1264. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1265. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1266. AC_SUBST(LOGFACILITY)
  1267. # Check if we have getresuid and getresgid
  1268. AC_CHECK_FUNCS(getresuid getresgid)
  1269. # Check for gethostbyname_r in all its glorious incompatible versions.
  1270. # (This logic is based on that in Python's configure.in)
  1271. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1272. [Define this if you have any gethostbyname_r()])
  1273. AC_CHECK_FUNC(gethostbyname_r, [
  1274. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1275. OLD_CFLAGS=$CFLAGS
  1276. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1277. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
  1278. #include <netdb.h>
  1279. ], [[
  1280. char *cp1, *cp2;
  1281. struct hostent *h1, *h2;
  1282. int i1, i2;
  1283. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1284. ]])],[
  1285. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1286. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1287. [Define this if gethostbyname_r takes 6 arguments])
  1288. AC_MSG_RESULT(6)
  1289. ], [
  1290. AC_TRY_COMPILE([
  1291. #include <netdb.h>
  1292. ], [
  1293. char *cp1, *cp2;
  1294. struct hostent *h1;
  1295. int i1, i2;
  1296. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1297. ], [
  1298. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1299. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1300. [Define this if gethostbyname_r takes 5 arguments])
  1301. AC_MSG_RESULT(5)
  1302. ], [
  1303. AC_TRY_COMPILE([
  1304. #include <netdb.h>
  1305. ], [
  1306. char *cp1;
  1307. struct hostent *h1;
  1308. struct hostent_data hd;
  1309. (void) gethostbyname_r(cp1,h1,&hd);
  1310. ], [
  1311. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1312. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1313. [Define this if gethostbyname_r takes 3 arguments])
  1314. AC_MSG_RESULT(3)
  1315. ], [
  1316. AC_MSG_RESULT(0)
  1317. ])
  1318. ])
  1319. ])
  1320. CFLAGS=$OLD_CFLAGS
  1321. ])
  1322. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1323. tor_cv_have_func_macro,
  1324. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1325. #include <stdio.h>
  1326. int main(int c, char **v) { puts(__func__); }])],
  1327. tor_cv_have_func_macro=yes,
  1328. tor_cv_have_func_macro=no))
  1329. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1330. tor_cv_have_FUNC_macro,
  1331. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1332. #include <stdio.h>
  1333. int main(int c, char **v) { puts(__FUNC__); }])],
  1334. tor_cv_have_FUNC_macro=yes,
  1335. tor_cv_have_FUNC_macro=no))
  1336. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1337. tor_cv_have_FUNCTION_macro,
  1338. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1339. #include <stdio.h>
  1340. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1341. tor_cv_have_FUNCTION_macro=yes,
  1342. tor_cv_have_FUNCTION_macro=no))
  1343. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1344. tor_cv_have_environ_declared,
  1345. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1346. #ifdef HAVE_UNISTD_H
  1347. #include <unistd.h>
  1348. #endif
  1349. #include <stdlib.h>
  1350. int main(int c, char **v) { char **t = environ; }])],
  1351. tor_cv_have_environ_declared=yes,
  1352. tor_cv_have_environ_declared=no))
  1353. if test "$tor_cv_have_func_macro" = "yes"; then
  1354. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1355. fi
  1356. if test "$tor_cv_have_FUNC_macro" = "yes"; then
  1357. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1358. fi
  1359. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1360. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1361. [Defined if the compiler supports __FUNCTION__])
  1362. fi
  1363. if test "$tor_cv_have_environ_declared" = "yes"; then
  1364. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1365. [Defined if we have extern char **environ already declared])
  1366. fi
  1367. # $prefix stores the value of the --prefix command line option, or
  1368. # NONE if the option wasn't set. In the case that it wasn't set, make
  1369. # it be the default, so that we can use it to expand directories now.
  1370. if test "x$prefix" = "xNONE"; then
  1371. prefix=$ac_default_prefix
  1372. fi
  1373. # and similarly for $exec_prefix
  1374. if test "x$exec_prefix" = "xNONE"; then
  1375. exec_prefix=$prefix
  1376. fi
  1377. if test "x$BUILDDIR" = "x"; then
  1378. BUILDDIR=`pwd`
  1379. fi
  1380. AC_SUBST(BUILDDIR)
  1381. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1382. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1383. if test "x$CONFDIR" = "x"; then
  1384. CONFDIR=`eval echo $sysconfdir/tor`
  1385. fi
  1386. AC_SUBST(CONFDIR)
  1387. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1388. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1389. BINDIR=`eval echo $bindir`
  1390. AC_SUBST(BINDIR)
  1391. LOCALSTATEDIR=`eval echo $localstatedir`
  1392. AC_SUBST(LOCALSTATEDIR)
  1393. if test "$bwin32" = "true"; then
  1394. # Test if the linker supports the --nxcompat and --dynamicbase options
  1395. # for Windows
  1396. save_LDFLAGS="$LDFLAGS"
  1397. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1398. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1399. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1400. [AC_MSG_RESULT([yes])]
  1401. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1402. [AC_MSG_RESULT([no])]
  1403. )
  1404. LDFLAGS="$save_LDFLAGS"
  1405. fi
  1406. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1407. # than autoconf's macros like.
  1408. if test "$GCC" = "yes"; then
  1409. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1410. # accident waiting to happen.
  1411. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1412. else
  1413. # Override optimization level for non-gcc compilers
  1414. CFLAGS="$CFLAGS -O"
  1415. enable_gcc_warnings=no
  1416. enable_gcc_warnings_advisory=no
  1417. fi
  1418. # Warnings implies advisory-warnings and -Werror.
  1419. if test "$enable_gcc_warnings" = "yes"; then
  1420. enable_gcc_warnings_advisory=yes
  1421. enable_fatal_warnings=yes
  1422. fi
  1423. # OS X Lion started deprecating the system openssl. Let's just disable
  1424. # all deprecation warnings on OS X. Also, to potentially make the binary
  1425. # a little smaller, let's enable dead_strip.
  1426. case "$host_os" in
  1427. darwin*)
  1428. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1429. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1430. esac
  1431. # Add some more warnings which we use in development but not in the
  1432. # released versions. (Some relevant gcc versions can't handle these.)
  1433. #
  1434. # Note that we have to do this near the end of the autoconf process, or
  1435. # else we may run into problems when these warnings hit on the testing C
  1436. # programs that autoconf wants to build.
  1437. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1438. case "$host" in
  1439. *-*-openbsd* | *-*-bitrig*)
  1440. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1441. # That's fine, except that the headers don't pass -Wredundant-decls.
  1442. # Therefore, let's disable -Wsystem-headers when we're building
  1443. # with maximal warnings on OpenBSD.
  1444. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1445. esac
  1446. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1447. # have it work better.
  1448. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1449. # This warning was added in gcc 4.3, but it appears to generate
  1450. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1451. #CFLAGS="$CFLAGS -Wlogical-op"
  1452. m4_foreach_w([warning_flag], [
  1453. -Waddress
  1454. -Waddress-of-array-temporary
  1455. -Waddress-of-temporary
  1456. -Wambiguous-macro
  1457. -Wanonymous-pack-parens
  1458. -Warc
  1459. -Warc-abi
  1460. -Warc-bridge-casts-disallowed-in-nonarc
  1461. -Warc-maybe-repeated-use-of-weak
  1462. -Warc-performSelector-leaks
  1463. -Warc-repeated-use-of-weak
  1464. -Warray-bounds
  1465. -Warray-bounds-pointer-arithmetic
  1466. -Wasm
  1467. -Wasm-operand-widths
  1468. -Watomic-properties
  1469. -Watomic-property-with-user-defined-accessor
  1470. -Wauto-import
  1471. -Wauto-storage-class
  1472. -Wauto-var-id
  1473. -Wavailability
  1474. -Wbackslash-newline-escape
  1475. -Wbad-array-new-length
  1476. -Wbind-to-temporary-copy
  1477. -Wbitfield-constant-conversion
  1478. -Wbool-conversion
  1479. -Wbool-conversions
  1480. -Wbuiltin-requires-header
  1481. -Wchar-align
  1482. -Wcompare-distinct-pointer-types
  1483. -Wcomplex-component-init
  1484. -Wconditional-type-mismatch
  1485. -Wconfig-macros
  1486. -Wconstant-conversion
  1487. -Wconstant-logical-operand
  1488. -Wconstexpr-not-const
  1489. -Wcustom-atomic-properties
  1490. -Wdangling-field
  1491. -Wdangling-initializer-list
  1492. -Wdate-time
  1493. -Wdelegating-ctor-cycles
  1494. -Wdeprecated-implementations
  1495. -Wdeprecated-register
  1496. -Wdirect-ivar-access
  1497. -Wdiscard-qual
  1498. -Wdistributed-object-modifiers
  1499. -Wdivision-by-zero
  1500. -Wdollar-in-identifier-extension
  1501. -Wdouble-promotion
  1502. -Wduplicate-decl-specifier
  1503. -Wduplicate-enum
  1504. -Wduplicate-method-arg
  1505. -Wduplicate-method-match
  1506. -Wduplicated-cond
  1507. -Wdynamic-class-memaccess
  1508. -Wembedded-directive
  1509. -Wempty-translation-unit
  1510. -Wenum-conversion
  1511. -Wexit-time-destructors
  1512. -Wexplicit-ownership-type
  1513. -Wextern-initializer
  1514. -Wextra
  1515. -Wextra-semi
  1516. -Wextra-tokens
  1517. -Wflexible-array-extensions
  1518. -Wfloat-conversion
  1519. -Wformat-non-iso
  1520. -Wfour-char-constants
  1521. -Wgcc-compat
  1522. -Wglobal-constructors
  1523. -Wgnu-array-member-paren-init
  1524. -Wgnu-designator
  1525. -Wgnu-static-float-init
  1526. -Wheader-guard
  1527. -Wheader-hygiene
  1528. -Widiomatic-parentheses
  1529. -Wignored-attributes
  1530. -Wimplicit-atomic-properties
  1531. -Wimplicit-conversion-floating-point-to-bool
  1532. -Wimplicit-exception-spec-mismatch
  1533. -Wimplicit-fallthrough
  1534. -Wimplicit-fallthrough-per-function
  1535. -Wimplicit-retain-self
  1536. -Wimport-preprocessor-directive-pedantic
  1537. -Wincompatible-library-redeclaration
  1538. -Wincompatible-pointer-types-discards-qualifiers
  1539. -Wincomplete-implementation
  1540. -Wincomplete-module
  1541. -Wincomplete-umbrella
  1542. -Winit-self
  1543. -Wint-conversions
  1544. -Wint-to-void-pointer-cast
  1545. -Winteger-overflow
  1546. -Winvalid-constexpr
  1547. -Winvalid-iboutlet
  1548. -Winvalid-noreturn
  1549. -Winvalid-pp-token
  1550. -Winvalid-source-encoding
  1551. -Winvalid-token-paste
  1552. -Wknr-promoted-parameter
  1553. -Wlanguage-extension-token
  1554. -Wlarge-by-value-copy
  1555. -Wliteral-conversion
  1556. -Wliteral-range
  1557. -Wlocal-type-template-args
  1558. -Wlogical-op
  1559. -Wloop-analysis
  1560. -Wmain-return-type
  1561. -Wmalformed-warning-check
  1562. -Wmethod-signatures
  1563. -Wmicrosoft
  1564. -Wmicrosoft-exists
  1565. -Wmismatched-parameter-types
  1566. -Wmismatched-return-types
  1567. -Wmissing-field-initializers
  1568. -Wmissing-format-attribute
  1569. -Wmissing-noreturn
  1570. -Wmissing-selector-name
  1571. -Wmissing-sysroot
  1572. -Wmissing-variable-declarations
  1573. -Wmodule-conflict
  1574. -Wnested-anon-types
  1575. -Wnewline-eof
  1576. -Wnon-literal-null-conversion
  1577. -Wnon-pod-varargs
  1578. -Wnonportable-cfstrings
  1579. -Wnormalized=id
  1580. -Wnull-arithmetic
  1581. -Wnull-character
  1582. -Wnull-conversion
  1583. -Wnull-dereference
  1584. -Wout-of-line-declaration
  1585. -Wover-aligned
  1586. -Woverlength-strings
  1587. -Woverride-init
  1588. -Woverriding-method-mismatch
  1589. -Wpointer-type-mismatch
  1590. -Wpredefined-identifier-outside-function
  1591. -Wprotocol-property-synthesis-ambiguity
  1592. -Wreadonly-iboutlet-property
  1593. -Wreadonly-setter-attrs
  1594. -Wreceiver-expr
  1595. -Wreceiver-forward-class
  1596. -Wreceiver-is-weak
  1597. -Wreinterpret-base-class
  1598. -Wrequires-super-attribute
  1599. -Wreserved-user-defined-literal
  1600. -Wreturn-stack-address
  1601. -Wsection
  1602. -Wselector-type-mismatch
  1603. -Wsentinel
  1604. -Wserialized-diagnostics
  1605. -Wshadow
  1606. -Wshift-count-negative
  1607. -Wshift-count-overflow
  1608. -Wshift-negative-value
  1609. -Wshift-overflow=2
  1610. -Wshift-sign-overflow
  1611. -Wshorten-64-to-32
  1612. -Wsizeof-array-argument
  1613. -Wsource-uses-openmp
  1614. -Wstatic-float-init
  1615. -Wstatic-in-inline
  1616. -Wstatic-local-in-inline
  1617. -Wstrict-overflow=1
  1618. -Wstring-compare
  1619. -Wstring-conversion
  1620. -Wstrlcpy-strlcat-size
  1621. -Wstrncat-size
  1622. -Wsuggest-attribute=format
  1623. -Wsuggest-attribute=noreturn
  1624. -Wsuper-class-method-mismatch
  1625. -Wswitch-bool
  1626. -Wsync-nand
  1627. -Wtautological-constant-out-of-range-compare
  1628. -Wtentative-definition-incomplete-type
  1629. -Wtrampolines
  1630. -Wtype-safety
  1631. -Wtypedef-redefinition
  1632. -Wtypename-missing
  1633. -Wundefined-inline
  1634. -Wundefined-internal
  1635. -Wundefined-reinterpret-cast
  1636. -Wunicode
  1637. -Wunicode-whitespace
  1638. -Wunknown-warning-option
  1639. -Wunnamed-type-template-args
  1640. -Wunneeded-member-function
  1641. -Wunsequenced
  1642. -Wunsupported-visibility
  1643. -Wunused-but-set-parameter
  1644. -Wunused-but-set-variable
  1645. -Wunused-command-line-argument
  1646. -Wunused-const-variable=2
  1647. -Wunused-exception-parameter
  1648. -Wunused-local-typedefs
  1649. -Wunused-member-function
  1650. -Wunused-sanitize-argument
  1651. -Wunused-volatile-lvalue
  1652. -Wuser-defined-literals
  1653. -Wvariadic-macros
  1654. -Wvector-conversion
  1655. -Wvector-conversions
  1656. -Wvexing-parse
  1657. -Wvisibility
  1658. -Wvla-extension
  1659. -Wzero-length-array
  1660. ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
  1661. dnl We should re-enable this in some later version. Clang doesn't
  1662. dnl mind, but it causes trouble with GCC.
  1663. dnl -Wstrict-overflow=2
  1664. dnl These seem to require annotations that we don't currently use,
  1665. dnl and they give false positives in our pthreads wrappers. (Clang 4)
  1666. dnl -Wthread-safety
  1667. dnl -Wthread-safety-analysis
  1668. dnl -Wthread-safety-attributes
  1669. dnl -Wthread-safety-beta
  1670. dnl -Wthread-safety-precise
  1671. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1672. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1673. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1674. CFLAGS="$CFLAGS -Wwrite-strings"
  1675. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1676. CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
  1677. CFLAGS="$CFLAGS -Wunused-parameter "
  1678. # These interfere with building main() { return 0; }, which autoconf
  1679. # likes to use as its default program.
  1680. CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
  1681. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  1682. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  1683. fi
  1684. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  1685. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  1686. fi
  1687. if test "x$enable_fatal_warnings" = "xyes"; then
  1688. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  1689. # default autoconf programs are full of errors.
  1690. CFLAGS="$CFLAGS -Werror"
  1691. fi
  1692. fi
  1693. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  1694. case "$host_os" in
  1695. darwin*)
  1696. AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
  1697. esac
  1698. fi
  1699. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  1700. AC_CONFIG_FILES([
  1701. Doxyfile
  1702. Makefile
  1703. contrib/dist/suse/tor.sh
  1704. contrib/operator-tools/tor.logrotate
  1705. contrib/dist/tor.sh
  1706. contrib/dist/torctl
  1707. contrib/dist/tor.service
  1708. src/config/torrc.sample
  1709. src/config/torrc.minimal
  1710. scripts/maint/checkOptionDocs.pl
  1711. scripts/maint/updateVersions.pl
  1712. ])
  1713. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  1714. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  1715. for file in $regular_mans ; do
  1716. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  1717. echo "==================================";
  1718. echo;
  1719. echo "Building Tor has failed since manpages cannot be built.";
  1720. echo;
  1721. echo "You need asciidoc installed to be able to build the manpages.";
  1722. echo "To build without manpages, use the --disable-asciidoc argument";
  1723. echo "when calling configure.";
  1724. echo;
  1725. echo "==================================";
  1726. exit 1;
  1727. fi
  1728. done
  1729. fi
  1730. AC_OUTPUT