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],[0.2.9.1-alpha])
  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(bufferevents,
  137. AS_HELP_STRING(--enable-bufferevents, [use Libevent's buffered IO]))
  138. AC_ARG_ENABLE(tool-name-check,
  139. AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
  140. AC_ARG_ENABLE(seccomp,
  141. AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
  142. AC_ARG_ENABLE(libscrypt,
  143. AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
  144. dnl check for the correct "ar" when cross-compiling
  145. AN_MAKEVAR([AR], [AC_PROG_AR])
  146. AN_PROGRAM([ar], [AC_PROG_AR])
  147. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
  148. AC_PROG_AR
  149. dnl Check whether the above macro has settled for a simply named tool even
  150. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  151. dnl because that will find any cc on the system, not only the cross-compiler,
  152. dnl and then verify that a binary built with this compiler runs on the
  153. dnl build system. It will then come to the false conclusion that we're not
  154. dnl cross-compiling.
  155. if test "x$enable_tool_name_check" != "xno"; then
  156. if test "x$ac_tool_warned" = "xyes"; then
  157. 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.)])
  158. elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
  159. 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.)])
  160. fi
  161. fi
  162. AC_PROG_CC
  163. AC_PROG_CPP
  164. AC_PROG_MAKE_SET
  165. AC_PROG_RANLIB
  166. AC_PATH_PROG([PERL], [perl])
  167. dnl autoconf 2.59 appears not to support AC_PROG_SED
  168. AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
  169. dnl check for asciidoc and a2x
  170. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  171. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  172. AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
  173. AM_CONDITIONAL(USE_FW_HELPER, test "x$natpmp" = "xtrue" || test "x$upnp" = "xtrue")
  174. AM_CONDITIONAL(NAT_PMP, test "x$natpmp" = "xtrue")
  175. AM_CONDITIONAL(MINIUPNPC, test "x$upnp" = "xtrue")
  176. AM_PROG_CC_C_O
  177. AC_PROG_CC_C99
  178. AC_ARG_VAR([PYTHON], [path to Python binary])
  179. AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
  180. if test "x$PYTHON" = "x"; then
  181. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  182. fi
  183. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  184. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  185. AC_C_FLEXIBLE_ARRAY_MEMBER
  186. ], [
  187. dnl Maybe we've got an old autoconf...
  188. AC_CACHE_CHECK([for flexible array members],
  189. tor_cv_c_flexarray,
  190. [AC_COMPILE_IFELSE(
  191. AC_LANG_PROGRAM([
  192. struct abc { int a; char b[]; };
  193. ], [
  194. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  195. def->b[0] = 33;
  196. ]),
  197. [tor_cv_c_flexarray=yes],
  198. [tor_cv_c_flexarray=no])])
  199. if test "$tor_cv_flexarray" = "yes"; then
  200. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  201. else
  202. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  203. fi
  204. ])
  205. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  206. tor_cv_c_c99_decl,
  207. [AC_COMPILE_IFELSE(
  208. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  209. [tor_cv_c_c99_decl=yes],
  210. [tor_cv_c_c99_decl=no] )])
  211. if test "$tor_cv_c_c99_decl" != "yes"; then
  212. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  213. fi
  214. AC_CACHE_CHECK([for working C99 designated initializers],
  215. tor_cv_c_c99_designated_init,
  216. [AC_COMPILE_IFELSE(
  217. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  218. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  219. [tor_cv_c_c99_designated_init=yes],
  220. [tor_cv_c_c99_designated_init=no] )])
  221. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  222. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  223. fi
  224. TORUSER=_tor
  225. AC_ARG_WITH(tor-user,
  226. AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
  227. [
  228. TORUSER=$withval
  229. ]
  230. )
  231. AC_SUBST(TORUSER)
  232. TORGROUP=_tor
  233. AC_ARG_WITH(tor-group,
  234. AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
  235. [
  236. TORGROUP=$withval
  237. ]
  238. )
  239. AC_SUBST(TORGROUP)
  240. dnl If _WIN32 is defined and non-zero, we are building for win32
  241. AC_MSG_CHECKING([for win32])
  242. AC_RUN_IFELSE([AC_LANG_SOURCE([
  243. int main(int c, char **v) {
  244. #ifdef _WIN32
  245. #if _WIN32
  246. return 0;
  247. #else
  248. return 1;
  249. #endif
  250. #else
  251. return 2;
  252. #endif
  253. }])],
  254. bwin32=true; AC_MSG_RESULT([yes]),
  255. bwin32=false; AC_MSG_RESULT([no]),
  256. bwin32=cross; AC_MSG_RESULT([cross])
  257. )
  258. if test "$bwin32" = "cross"; then
  259. AC_MSG_CHECKING([for win32 (cross)])
  260. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  261. #ifdef _WIN32
  262. int main(int c, char **v) {return 0;}
  263. #else
  264. #error
  265. int main(int c, char **v) {return x(y);}
  266. #endif
  267. ])],
  268. bwin32=true; AC_MSG_RESULT([yes]),
  269. bwin32=false; AC_MSG_RESULT([no]))
  270. fi
  271. AH_BOTTOM([
  272. #ifdef _WIN32
  273. /* Defined to access windows functions and definitions for >=WinXP */
  274. # ifndef WINVER
  275. # define WINVER 0x0501
  276. # endif
  277. /* Defined to access _other_ windows functions and definitions for >=WinXP */
  278. # ifndef _WIN32_WINNT
  279. # define _WIN32_WINNT 0x0501
  280. # endif
  281. /* Defined to avoid including some windows headers as part of Windows.h */
  282. # ifndef WIN32_LEAN_AND_MEAN
  283. # define WIN32_LEAN_AND_MEAN 1
  284. # endif
  285. #endif
  286. ])
  287. AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
  288. dnl Enable C99 when compiling with MIPSpro
  289. AC_MSG_CHECKING([for MIPSpro compiler])
  290. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  291. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  292. #error
  293. return x(y);
  294. #endif
  295. ])],
  296. bmipspro=false; AC_MSG_RESULT(no),
  297. bmipspro=true; AC_MSG_RESULT(yes))
  298. if test "$bmipspro" = "true"; then
  299. CFLAGS="$CFLAGS -c99"
  300. fi
  301. AC_C_BIGENDIAN
  302. AC_SEARCH_LIBS(socket, [socket network])
  303. AC_SEARCH_LIBS(gethostbyname, [nsl])
  304. AC_SEARCH_LIBS(dlopen, [dl])
  305. AC_SEARCH_LIBS(inet_aton, [resolv])
  306. AC_SEARCH_LIBS(backtrace, [execinfo])
  307. saved_LIBS="$LIBS"
  308. AC_SEARCH_LIBS([clock_gettime], [rt])
  309. if test "$LIBS" != "$saved_LIBS"; then
  310. # Looks like we need -lrt for clock_gettime().
  311. have_rt=yes
  312. fi
  313. AC_SEARCH_LIBS(pthread_create, [pthread])
  314. AC_SEARCH_LIBS(pthread_detach, [pthread])
  315. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  316. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  317. AC_CHECK_FUNCS(
  318. _NSGetEnviron \
  319. RtlSecureZeroMemory \
  320. SecureZeroMemory \
  321. accept4 \
  322. backtrace \
  323. backtrace_symbols_fd \
  324. clock_gettime \
  325. eventfd \
  326. explicit_bzero \
  327. timingsafe_memcmp \
  328. flock \
  329. ftime \
  330. getaddrinfo \
  331. getentropy \
  332. getifaddrs \
  333. getpass \
  334. getrlimit \
  335. gettimeofday \
  336. gmtime_r \
  337. htonll \
  338. inet_aton \
  339. ioctl \
  340. issetugid \
  341. llround \
  342. localtime_r \
  343. lround \
  344. memmem \
  345. memset_s \
  346. pipe \
  347. pipe2 \
  348. prctl \
  349. readpassphrase \
  350. rint \
  351. sigaction \
  352. socketpair \
  353. statvfs \
  354. strlcat \
  355. strlcpy \
  356. strnlen \
  357. strptime \
  358. strtok_r \
  359. strtoull \
  360. sysconf \
  361. sysctl \
  362. truncate \
  363. uname \
  364. usleep \
  365. vasprintf \
  366. _vscprintf
  367. )
  368. if test "$bwin32" != "true"; then
  369. AC_CHECK_HEADERS(pthread.h)
  370. AC_CHECK_FUNCS(pthread_create)
  371. AC_CHECK_FUNCS(pthread_condattr_setclock)
  372. fi
  373. if test "$bwin32" = "true"; then
  374. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  375. #include <windows.h>
  376. #include <conio.h>
  377. #include <wchar.h>
  378. ])
  379. fi
  380. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  381. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  382. dnl ------------------------------------------------------
  383. dnl Where do you live, libevent? And how do we call you?
  384. if test "$bwin32" = "true"; then
  385. TOR_LIB_WS32=-lws2_32
  386. TOR_LIB_IPHLPAPI=-liphlpapi
  387. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  388. # think it's actually necessary.
  389. TOR_LIB_GDI=-lgdi32
  390. else
  391. TOR_LIB_WS32=
  392. TOR_LIB_GDI=
  393. fi
  394. AC_SUBST(TOR_LIB_WS32)
  395. AC_SUBST(TOR_LIB_GDI)
  396. AC_SUBST(TOR_LIB_IPHLPAPI)
  397. tor_libevent_pkg_redhat="libevent"
  398. tor_libevent_pkg_debian="libevent-dev"
  399. tor_libevent_devpkg_redhat="libevent-devel"
  400. tor_libevent_devpkg_debian="libevent-dev"
  401. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  402. dnl linking for static builds.
  403. STATIC_LIBEVENT_FLAGS=""
  404. if test "$enable_static_libevent" = "yes"; then
  405. if test "$have_rt" = "yes"; then
  406. STATIC_LIBEVENT_FLAGS=" -lrt "
  407. fi
  408. fi
  409. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  410. #ifdef _WIN32
  411. #include <winsock2.h>
  412. #endif
  413. #include <sys/time.h>
  414. #include <sys/types.h>
  415. #include <event2/event.h>], [
  416. #ifdef _WIN32
  417. #include <winsock2.h>
  418. #endif
  419. void *event_init(void);],
  420. [
  421. #ifdef _WIN32
  422. {WSADATA d; WSAStartup(0x101,&d); }
  423. #endif
  424. event_init();
  425. ], [--with-libevent-dir], [/opt/libevent])
  426. dnl Now check for particular libevent functions.
  427. save_LIBS="$LIBS"
  428. save_LDFLAGS="$LDFLAGS"
  429. save_CPPFLAGS="$CPPFLAGS"
  430. LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
  431. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  432. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  433. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file])
  434. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  435. if test "$enable_static_libevent" = "yes"; then
  436. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  437. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  438. else
  439. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  440. fi
  441. else
  442. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  443. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  444. 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"))
  445. if test "$ac_cv_search_event_new" != "none required"; then
  446. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  447. fi
  448. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  449. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  450. fi
  451. else
  452. TOR_LIBEVENT_LIBS="-levent"
  453. fi
  454. fi
  455. LIBS="$save_LIBS"
  456. LDFLAGS="$save_LDFLAGS"
  457. CPPFLAGS="$save_CPPFLAGS"
  458. dnl Check that libevent is at least at version 2.0.10, the first stable
  459. dnl release of its series
  460. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  461. AC_MSG_CHECKING([whether Libevent is new enough])
  462. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  463. #include <event2/event.h>
  464. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  465. #error
  466. int x = y(zz);
  467. #else
  468. int x = 1;
  469. #endif
  470. ])], [ AC_MSG_RESULT([yes]) ],
  471. [ AC_MSG_RESULT([no])
  472. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  473. LIBS="$save_LIBS"
  474. LDFLAGS="$save_LDFLAGS"
  475. CPPFLAGS="$save_CPPFLAGS"
  476. dnl bufferents require version 2.0.13
  477. if test "$enable_bufferevents" = "yes"; then
  478. AC_CHECK_HEADERS(event2/bufferevent_ssl.h)
  479. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  480. AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
  481. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  482. #include <event2/event.h>
  483. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
  484. #error
  485. int x = y(zz);
  486. #else
  487. int x = 1;
  488. #endif
  489. ])], [ AC_MSG_RESULT([yes]) ],
  490. [ AC_MSG_RESULT([no])
  491. AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
  492. fi
  493. LIBS="$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="$save_LIBS"
  517. AC_SUBST(TOR_LIB_MATH)
  518. dnl ------------------------------------------------------
  519. dnl Where do you live, openssl? And how do we call you?
  520. tor_openssl_pkg_redhat="openssl"
  521. tor_openssl_pkg_debian="libssl-dev"
  522. tor_openssl_devpkg_redhat="openssl-devel"
  523. tor_openssl_devpkg_debian="libssl-dev"
  524. ALT_openssl_WITHVAL=""
  525. AC_ARG_WITH(ssl-dir,
  526. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  527. [
  528. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  529. ALT_openssl_WITHVAL="$withval"
  530. fi
  531. ])
  532. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
  533. [#include <openssl/rand.h>],
  534. [void RAND_add(const void *buf, int num, double entropy);],
  535. [RAND_add((void*)0,0,0);], [],
  536. [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
  537. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  538. if test "$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 $TOR_LIBDIR_openssl/libcrypto.a"
  543. fi
  544. else
  545. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  546. fi
  547. AC_SUBST(TOR_OPENSSL_LIBS)
  548. dnl Now check for particular openssl functions.
  549. save_LIBS="$LIBS"
  550. save_LDFLAGS="$LDFLAGS"
  551. save_CPPFLAGS="$CPPFLAGS"
  552. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  553. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  554. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  555. AC_TRY_COMPILE([
  556. #include <openssl/opensslv.h>
  557. #if OPENSSL_VERSION_NUMBER < 0x1000000fL
  558. #error "too old"
  559. #endif
  560. ], [],
  561. [ : ],
  562. [ AC_ERROR([OpenSSL is too old. We require 1.0.0 or later. You can specify a path to a newer one with --with-openssl-dir.]) ])
  563. AC_TRY_COMPILE([
  564. #include <openssl/opensslv.h>
  565. #include <openssl/evp.h>
  566. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  567. #error "no ECC"
  568. #endif
  569. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  570. #error "curves unavailable"
  571. #endif
  572. ], [],
  573. [ : ],
  574. [ AC_ERROR([OpenSSL is built without full ECC support, including curves P256 and P224. You can specify a path to one with ECC support with --with-openssl-dir.]) ])
  575. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  576. [#include <openssl/ssl.h>
  577. ])
  578. AC_CHECK_FUNCS([ \
  579. SSL_SESSION_get_master_key \
  580. SSL_get_server_random \
  581. SSL_get_client_ciphers \
  582. SSL_get_client_random \
  583. SSL_CIPHER_find \
  584. TLS_method
  585. ])
  586. dnl Check if OpenSSL has scrypt implementation.
  587. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  588. LIBS="$save_LIBS"
  589. LDFLAGS="$save_LDFLAGS"
  590. CPPFLAGS="$save_CPPFLAGS"
  591. dnl ------------------------------------------------------
  592. dnl Where do you live, zlib? And how do we call you?
  593. tor_zlib_pkg_redhat="zlib"
  594. tor_zlib_pkg_debian="zlib1g"
  595. tor_zlib_devpkg_redhat="zlib-devel"
  596. tor_zlib_devpkg_debian="zlib1g-dev"
  597. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  598. [#include <zlib.h>],
  599. [const char * zlibVersion(void);],
  600. [zlibVersion();], [--with-zlib-dir],
  601. [/opt/zlib])
  602. if test "$enable_static_zlib" = "yes"; then
  603. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  604. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  605. using --enable-static-zlib")
  606. else
  607. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  608. fi
  609. else
  610. TOR_ZLIB_LIBS="-lz"
  611. fi
  612. AC_SUBST(TOR_ZLIB_LIBS)
  613. dnl ----------------------------------------------------------------------
  614. dnl Check if libcap is available for capabilities.
  615. tor_cap_pkg_debian="libcap2"
  616. tor_cap_pkg_redhat="libcap"
  617. tor_cap_devpkg_debian="libcap-dev"
  618. tor_cap_devpkg_redhat="libcap-devel"
  619. AC_CHECK_LIB([cap], [cap_init], [],
  620. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  621. )
  622. AC_CHECK_FUNCS(cap_set_proc)
  623. dnl ---------------------------------------------------------------------
  624. dnl Now that we know about our major libraries, we can check for compiler
  625. dnl and linker hardening options. We need to do this with the libraries known,
  626. dnl since sometimes the linker will like an option but not be willing to
  627. dnl use it with a build of a library.
  628. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  629. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_CAP_LIBS"
  630. CFLAGS_FTRAPV=
  631. CFLAGS_FWRAPV=
  632. CFLAGS_ASAN=
  633. CFLAGS_UBSAN=
  634. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  635. #if !defined(__clang__)
  636. #error
  637. #endif])], have_clang=yes, have_clang=no)
  638. if test "x$enable_gcc_hardening" != "xno"; then
  639. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  640. if test "x$have_clang" = "xyes"; then
  641. TOR_CHECK_CFLAGS(-Qunused-arguments)
  642. fi
  643. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  644. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  645. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  646. m4_ifdef([AS_VAR_IF],[
  647. AS_VAR_IF(can_compile, [yes],
  648. AS_VAR_IF(can_link, [yes],
  649. [],
  650. 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.)]))
  651. )])
  652. AS_VAR_POPDEF([can_link])
  653. AS_VAR_POPDEF([can_compile])
  654. TOR_CHECK_CFLAGS(-Wstack-protector)
  655. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  656. if test "$bwin32" = "false"; then
  657. TOR_CHECK_CFLAGS(-fPIE)
  658. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  659. fi
  660. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  661. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  662. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  663. AC_MSG_WARN([The compiler supports -ftrapv, but for some reason I was not able to link with -ftrapv. Are you missing run-time support? Run-time hardening will not work as well as it should.])
  664. fi
  665. fi
  666. if test "x$enable_expensive_hardening" = "xyes"; then
  667. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  668. AC_MSG_ERROR([You requested expensive hardening, but the compiler does not seem to support -ftrapv.])
  669. fi
  670. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  671. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  672. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.so, and with Clang you need libclang_rt.ubsan*])
  673. fi
  674. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  675. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  676. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.so, and with Clang you need libclang_rt.ubsan*])
  677. fi
  678. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  679. fi
  680. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  681. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  682. mulodi_fixes_ftrapv=no
  683. if test "$have_clang" = "yes"; then
  684. saved_CFLAGS="$CFLAGS"
  685. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  686. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  687. AC_LINK_IFELSE([
  688. AC_LANG_SOURCE([[
  689. #include <stdint.h>
  690. #include <stdlib.h>
  691. int main(int argc, char **argv)
  692. {
  693. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  694. * (int64_t)atoi(argv[3]);
  695. return x == 9;
  696. } ]])],
  697. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  698. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  699. if test "$ftrapv_can_link" = "no"; then
  700. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  701. AC_LINK_IFELSE([
  702. AC_LANG_SOURCE([[
  703. #include <stdint.h>
  704. #include <stdlib.h>
  705. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  706. *overflow=0;
  707. return a;
  708. }
  709. int main(int argc, char **argv)
  710. {
  711. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  712. * (int64_t)atoi(argv[3]);
  713. return x == 9;
  714. } ]])],
  715. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  716. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  717. fi
  718. CFLAGS="$saved_CFLAGS"
  719. fi
  720. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  721. dnl These cflags add bunches of branches, and we haven't been able to
  722. dnl persuade ourselves that they're suitable for code that needs to be
  723. dnl constant time.
  724. AC_SUBST(CFLAGS_BUGTRAP)
  725. dnl These cflags are variant ones sutable for code that needs to be
  726. dnl constant-time.
  727. AC_SUBST(CFLAGS_CONSTTIME)
  728. if test "x$enable_linker_hardening" != "xno"; then
  729. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  730. fi
  731. # For backtrace support
  732. TOR_CHECK_LDFLAGS(-rdynamic)
  733. dnl ------------------------------------------------------
  734. dnl Now see if we have a -fomit-frame-pointer compiler option.
  735. saved_CFLAGS="$CFLAGS"
  736. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  737. F_OMIT_FRAME_POINTER=''
  738. if test "$saved_CFLAGS" != "$CFLAGS"; then
  739. if test "x$enable_expensive_hardening" != "xyes"; then
  740. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  741. fi
  742. fi
  743. CFLAGS="$saved_CFLAGS"
  744. AC_SUBST(F_OMIT_FRAME_POINTER)
  745. dnl ------------------------------------------------------
  746. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  747. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  748. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  749. dnl code will work.
  750. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  751. dnl ============================================================
  752. dnl Check for libseccomp
  753. if test "x$enable_seccomp" != "xno"; then
  754. AC_CHECK_HEADERS([seccomp.h])
  755. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  756. fi
  757. dnl ============================================================
  758. dnl Check for libscrypt
  759. if test "x$enable_libscrypt" != "xno"; then
  760. AC_CHECK_HEADERS([libscrypt.h])
  761. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  762. AC_CHECK_FUNCS([libscrypt_scrypt])
  763. fi
  764. dnl ============================================================
  765. dnl We need an implementation of curve25519.
  766. dnl set these defaults.
  767. build_curve25519_donna=no
  768. build_curve25519_donna_c64=no
  769. use_curve25519_donna=no
  770. use_curve25519_nacl=no
  771. CURVE25519_LIBS=
  772. dnl The best choice is using curve25519-donna-c64, but that requires
  773. dnl that we
  774. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  775. tor_cv_can_use_curve25519_donna_c64,
  776. [AC_RUN_IFELSE(
  777. [AC_LANG_PROGRAM([dnl
  778. #include <stdint.h>
  779. typedef unsigned uint128_t __attribute__((mode(TI)));
  780. int func(uint64_t a, uint64_t b) {
  781. uint128_t c = ((uint128_t)a) * b;
  782. int ok = ((uint64_t)(c>>96)) == 522859 &&
  783. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  784. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  785. (((uint64_t)(c))&0xffffffffL) == 0;
  786. return ok;
  787. }
  788. ], [dnl
  789. int ok = func( ((uint64_t)2000000000) * 1000000000,
  790. ((uint64_t)1234567890) << 24);
  791. return !ok;
  792. ])],
  793. [tor_cv_can_use_curve25519_donna_c64=yes],
  794. [tor_cv_can_use_curve25519_donna_c64=no],
  795. [AC_LINK_IFELSE(
  796. [AC_LANG_PROGRAM([dnl
  797. #include <stdint.h>
  798. typedef unsigned uint128_t __attribute__((mode(TI)));
  799. int func(uint64_t a, uint64_t b) {
  800. uint128_t c = ((uint128_t)a) * b;
  801. int ok = ((uint64_t)(c>>96)) == 522859 &&
  802. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  803. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  804. (((uint64_t)(c))&0xffffffffL) == 0;
  805. return ok;
  806. }
  807. ], [dnl
  808. int ok = func( ((uint64_t)2000000000) * 1000000000,
  809. ((uint64_t)1234567890) << 24);
  810. return !ok;
  811. ])],
  812. [tor_cv_can_use_curve25519_donna_c64=cross],
  813. [tor_cv_can_use_curve25519_donna_c64=no])])])
  814. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  815. nacl/crypto_scalarmult_curve25519.h])
  816. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  817. tor_cv_can_use_curve25519_nacl,
  818. [tor_saved_LIBS="$LIBS"
  819. LIBS="$LIBS -lnacl"
  820. AC_LINK_IFELSE(
  821. [AC_LANG_PROGRAM([dnl
  822. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  823. #include <crypto_scalarmult_curve25519.h>
  824. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  825. #include <nacl/crypto_scalarmult_curve25519.h>
  826. #endif
  827. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  828. #error Hey, this is the reference implementation! That's not fast.
  829. #endif
  830. ], [
  831. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  832. ])], [tor_cv_can_use_curve25519_nacl=yes],
  833. [tor_cv_can_use_curve25519_nacl=no])
  834. LIBS="$tor_saved_LIBS" ])
  835. dnl Okay, now we need to figure out which one to actually use. Fall back
  836. dnl to curve25519-donna.c
  837. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  838. build_curve25519_donna_c64=yes
  839. use_curve25519_donna=yes
  840. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  841. use_curve25519_nacl=yes
  842. CURVE25519_LIBS=-lnacl
  843. else
  844. build_curve25519_donna=yes
  845. use_curve25519_donna=yes
  846. fi
  847. if test "x$use_curve25519_donna" = "xyes"; then
  848. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  849. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  850. fi
  851. if test "x$use_curve25519_nacl" = "xyes"; then
  852. AC_DEFINE(USE_CURVE25519_NACL, 1,
  853. [Defined if we should use a curve25519 from nacl])
  854. fi
  855. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  856. test "x$build_curve25519_donna" = "xyes")
  857. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  858. test "x$build_curve25519_donna_c64" = "xyes")
  859. AC_SUBST(CURVE25519_LIBS)
  860. dnl Make sure to enable support for large off_t if available.
  861. AC_SYS_LARGEFILE
  862. AC_CHECK_HEADERS([assert.h \
  863. errno.h \
  864. fcntl.h \
  865. signal.h \
  866. string.h \
  867. sys/capability.h \
  868. sys/fcntl.h \
  869. sys/stat.h \
  870. sys/time.h \
  871. sys/types.h \
  872. time.h \
  873. unistd.h \
  874. arpa/inet.h \
  875. crt_externs.h \
  876. execinfo.h \
  877. grp.h \
  878. ifaddrs.h \
  879. inttypes.h \
  880. limits.h \
  881. linux/types.h \
  882. machine/limits.h \
  883. malloc.h \
  884. malloc/malloc.h \
  885. malloc_np.h \
  886. netdb.h \
  887. netinet/in.h \
  888. netinet/in6.h \
  889. pwd.h \
  890. readpassphrase.h \
  891. stdint.h \
  892. sys/eventfd.h \
  893. sys/file.h \
  894. sys/ioctl.h \
  895. sys/limits.h \
  896. sys/mman.h \
  897. sys/param.h \
  898. sys/prctl.h \
  899. sys/resource.h \
  900. sys/select.h \
  901. sys/socket.h \
  902. sys/statvfs.h \
  903. sys/syscall.h \
  904. sys/sysctl.h \
  905. sys/syslimits.h \
  906. sys/time.h \
  907. sys/types.h \
  908. sys/un.h \
  909. sys/utime.h \
  910. sys/wait.h \
  911. syslog.h \
  912. utime.h])
  913. AC_CHECK_HEADERS(sys/param.h)
  914. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  915. [#ifdef HAVE_SYS_TYPES_H
  916. #include <sys/types.h>
  917. #endif
  918. #ifdef HAVE_SYS_SOCKET_H
  919. #include <sys/socket.h>
  920. #endif])
  921. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  922. [#ifdef HAVE_SYS_TYPES_H
  923. #include <sys/types.h>
  924. #endif
  925. #ifdef HAVE_SYS_SOCKET_H
  926. #include <sys/socket.h>
  927. #endif
  928. #ifdef HAVE_NET_IF_H
  929. #include <net/if.h>
  930. #endif
  931. #ifdef HAVE_NETINET_IN_H
  932. #include <netinet/in.h>
  933. #endif])
  934. AC_CHECK_HEADERS(linux/if.h,[],[],
  935. [
  936. #ifdef HAVE_SYS_SOCKET_H
  937. #include <sys/socket.h>
  938. #endif
  939. ])
  940. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  941. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  942. [#ifdef HAVE_SYS_TYPES_H
  943. #include <sys/types.h>
  944. #endif
  945. #ifdef HAVE_SYS_SOCKET_H
  946. #include <sys/socket.h>
  947. #endif
  948. #ifdef HAVE_LIMITS_H
  949. #include <limits.h>
  950. #endif
  951. #ifdef HAVE_LINUX_TYPES_H
  952. #include <linux/types.h>
  953. #endif
  954. #ifdef HAVE_NETINET_IN6_H
  955. #include <netinet/in6.h>
  956. #endif
  957. #ifdef HAVE_NETINET_IN_H
  958. #include <netinet/in.h>
  959. #endif])
  960. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  961. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  962. [#ifdef HAVE_SYS_TYPES_H
  963. #include <sys/types.h>
  964. #endif
  965. #ifdef HAVE_SYS_SOCKET_H
  966. #include <sys/socket.h>
  967. #endif
  968. #ifdef HAVE_LIMITS_H
  969. #include <limits.h>
  970. #endif
  971. #ifdef HAVE_LINUX_TYPES_H
  972. #include <linux/types.h>
  973. #endif
  974. #ifdef HAVE_NETINET_IN6_H
  975. #include <netinet/in6.h>
  976. #endif
  977. #ifdef HAVE_NETINET_IN_H
  978. #include <netinet/in.h>
  979. #endif
  980. #ifdef HAVE_LINUX_IF_H
  981. #include <linux/if.h>
  982. #endif])
  983. transparent_ok=0
  984. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  985. transparent_ok=1
  986. fi
  987. if test "x$linux_netfilter_ipv4" = "x1"; then
  988. transparent_ok=1
  989. fi
  990. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  991. transparent_ok=1
  992. fi
  993. if test "x$transparent_ok" = "x1"; then
  994. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  995. case "$host" in
  996. *-*-openbsd* | *-*-bitrig*)
  997. AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
  998. esac
  999. else
  1000. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  1001. fi
  1002. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1003. [#ifdef HAVE_SYS_TYPES_H
  1004. #include <sys/types.h>
  1005. #endif
  1006. #ifdef HAVE_SYS_TIME_H
  1007. #include <sys/time.h>
  1008. #endif])
  1009. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  1010. dnl Watch out.
  1011. AC_CHECK_SIZEOF(int8_t)
  1012. AC_CHECK_SIZEOF(int16_t)
  1013. AC_CHECK_SIZEOF(int32_t)
  1014. AC_CHECK_SIZEOF(int64_t)
  1015. AC_CHECK_SIZEOF(uint8_t)
  1016. AC_CHECK_SIZEOF(uint16_t)
  1017. AC_CHECK_SIZEOF(uint32_t)
  1018. AC_CHECK_SIZEOF(uint64_t)
  1019. AC_CHECK_SIZEOF(intptr_t)
  1020. AC_CHECK_SIZEOF(uintptr_t)
  1021. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  1022. AC_CHECK_SIZEOF(char)
  1023. AC_CHECK_SIZEOF(short)
  1024. AC_CHECK_SIZEOF(int)
  1025. AC_CHECK_SIZEOF(long)
  1026. AC_CHECK_SIZEOF(long long)
  1027. AC_CHECK_SIZEOF(__int64)
  1028. AC_CHECK_SIZEOF(void *)
  1029. AC_CHECK_SIZEOF(time_t)
  1030. AC_CHECK_SIZEOF(size_t)
  1031. AC_CHECK_SIZEOF(pid_t)
  1032. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1033. AC_PC_FROM_UCONTEXT([:])
  1034. dnl used to include sockaddr_storage, but everybody has that.
  1035. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1036. [#ifdef HAVE_SYS_TYPES_H
  1037. #include <sys/types.h>
  1038. #endif
  1039. #ifdef HAVE_NETINET_IN_H
  1040. #include <netinet/in.h>
  1041. #endif
  1042. #ifdef HAVE_NETINET_IN6_H
  1043. #include <netinet/in6.h>
  1044. #endif
  1045. #ifdef HAVE_SYS_SOCKET_H
  1046. #include <sys/socket.h>
  1047. #endif
  1048. #ifdef _WIN32
  1049. #define _WIN32_WINNT 0x0501
  1050. #define WIN32_LEAN_AND_MEAN
  1051. #include <winsock2.h>
  1052. #include <ws2tcpip.h>
  1053. #endif
  1054. ])
  1055. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1056. [#ifdef HAVE_SYS_TYPES_H
  1057. #include <sys/types.h>
  1058. #endif
  1059. #ifdef HAVE_NETINET_IN_H
  1060. #include <netinet/in.h>
  1061. #endif
  1062. #ifdef HAVE_NETINET_IN6_H
  1063. #include <netinet/in6.h>
  1064. #endif
  1065. #ifdef HAVE_SYS_SOCKET_H
  1066. #include <sys/socket.h>
  1067. #endif
  1068. #ifdef _WIN32
  1069. #define _WIN32_WINNT 0x0501
  1070. #define WIN32_LEAN_AND_MEAN
  1071. #include <winsock2.h>
  1072. #include <ws2tcpip.h>
  1073. #endif
  1074. ])
  1075. AC_CHECK_TYPES([rlim_t], , ,
  1076. [#ifdef HAVE_SYS_TYPES_H
  1077. #include <sys/types.h>
  1078. #endif
  1079. #ifdef HAVE_SYS_TIME_H
  1080. #include <sys/time.h>
  1081. #endif
  1082. #ifdef HAVE_SYS_RESOURCE_H
  1083. #include <sys/resource.h>
  1084. #endif
  1085. ])
  1086. AX_CHECK_SIGN([time_t],
  1087. [ : ],
  1088. [ : ], [
  1089. #ifdef HAVE_SYS_TYPES_H
  1090. #include <sys/types.h>
  1091. #endif
  1092. #ifdef HAVE_SYS_TIME_H
  1093. #include <sys/time.h>
  1094. #endif
  1095. #ifdef HAVE_TIME_H
  1096. #include <time.h>
  1097. #endif
  1098. ])
  1099. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1100. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1101. fi
  1102. AX_CHECK_SIGN([size_t],
  1103. [ tor_cv_size_t_signed=yes ],
  1104. [ tor_cv_size_t_signed=no ], [
  1105. #ifdef HAVE_SYS_TYPES_H
  1106. #include <sys/types.h>
  1107. #endif
  1108. ])
  1109. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1110. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1111. fi
  1112. AX_CHECK_SIGN([enum always],
  1113. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1114. [ : ], [
  1115. enum always { AAA, BBB, CCC };
  1116. ])
  1117. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1118. #ifdef HAVE_SYS_SOCKET_H
  1119. #include <sys/socket.h>
  1120. #endif
  1121. ])
  1122. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1123. AC_CHECK_SIZEOF(cell_t)
  1124. # Now make sure that NULL can be represented as zero bytes.
  1125. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1126. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1127. [[#include <stdlib.h>
  1128. #include <string.h>
  1129. #include <stdio.h>
  1130. #ifdef HAVE_STDDEF_H
  1131. #include <stddef.h>
  1132. #endif
  1133. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1134. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1135. [tor_cv_null_is_zero=yes],
  1136. [tor_cv_null_is_zero=no],
  1137. [tor_cv_null_is_zero=cross])])
  1138. if test "$tor_cv_null_is_zero" = "cross"; then
  1139. # Cross-compiling; let's hope that the target isn't raving mad.
  1140. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1141. fi
  1142. if test "$tor_cv_null_is_zero" != "no"; then
  1143. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1144. [Define to 1 iff memset(0) sets pointers to NULL])
  1145. fi
  1146. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1147. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1148. [[#include <stdlib.h>
  1149. #include <string.h>
  1150. #include <stdio.h>
  1151. #ifdef HAVE_STDDEF_H
  1152. #include <stddef.h>
  1153. #endif
  1154. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1155. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1156. [tor_cv_dbl0_is_zero=yes],
  1157. [tor_cv_dbl0_is_zero=no],
  1158. [tor_cv_dbl0_is_zero=cross])])
  1159. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1160. # Cross-compiling; let's hope that the target isn't raving mad.
  1161. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1162. fi
  1163. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1164. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1165. [Define to 1 iff memset(0) sets doubles to 0.0])
  1166. fi
  1167. # And what happens when we malloc zero?
  1168. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1169. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1170. [[#include <stdlib.h>
  1171. #include <string.h>
  1172. #include <stdio.h>
  1173. #ifdef HAVE_STDDEF_H
  1174. #include <stddef.h>
  1175. #endif
  1176. int main () { return malloc(0)?0:1; }]])],
  1177. [tor_cv_malloc_zero_works=yes],
  1178. [tor_cv_malloc_zero_works=no],
  1179. [tor_cv_malloc_zero_works=cross])])
  1180. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1181. # Cross-compiling; let's hope that the target isn't raving mad.
  1182. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1183. fi
  1184. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1185. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1186. [Define to 1 iff malloc(0) returns a pointer])
  1187. fi
  1188. # whether we seem to be in a 2s-complement world.
  1189. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1190. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1191. [[int main () { int problem = ((-99) != (~99)+1);
  1192. return problem ? 1 : 0; }]])],
  1193. [tor_cv_twos_complement=yes],
  1194. [tor_cv_twos_complement=no],
  1195. [tor_cv_twos_complement=cross])])
  1196. if test "$tor_cv_twos_complement" = "cross"; then
  1197. # Cross-compiling; let's hope that the target isn't raving mad.
  1198. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1199. fi
  1200. if test "$tor_cv_twos_complement" != "no"; then
  1201. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1202. [Define to 1 iff we represent negative integers with
  1203. two's complement])
  1204. fi
  1205. # What does shifting a negative value do?
  1206. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1207. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1208. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1209. [tor_cv_sign_extend=yes],
  1210. [tor_cv_sign_extend=no],
  1211. [tor_cv_sign_extend=cross])])
  1212. if test "$tor_cv_sign_extend" = "cross"; then
  1213. # Cross-compiling; let's hope that the target isn't raving mad.
  1214. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1215. fi
  1216. if test "$tor_cv_sign_extend" != "no"; then
  1217. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1218. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1219. fi
  1220. # Whether we should use the dmalloc memory allocation debugging library.
  1221. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1222. AC_ARG_WITH(dmalloc,
  1223. AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
  1224. [if [[ "$withval" = "yes" ]]; then
  1225. dmalloc=1
  1226. AC_MSG_RESULT(yes)
  1227. else
  1228. dmalloc=1
  1229. AC_MSG_RESULT(no)
  1230. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1231. )
  1232. if [[ $dmalloc -eq 1 ]]; then
  1233. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1234. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1235. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1236. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1237. fi
  1238. AC_ARG_WITH(tcmalloc,
  1239. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
  1240. [ tcmalloc=yes ], [ tcmalloc=no ])
  1241. if test "x$tcmalloc" = "xyes"; then
  1242. LDFLAGS="-ltcmalloc $LDFLAGS"
  1243. fi
  1244. using_custom_malloc=no
  1245. if test "x$enable_openbsd_malloc" = "xyes"; then
  1246. using_custom_malloc=yes
  1247. fi
  1248. if test "x$tcmalloc" = "xyes"; then
  1249. using_custom_malloc=yes
  1250. fi
  1251. if test "$using_custom_malloc" = "no"; then
  1252. AC_CHECK_FUNCS(mallinfo)
  1253. fi
  1254. # By default, we're going to assume we don't have mlockall()
  1255. # bionic and other platforms have various broken mlockall subsystems.
  1256. # Some systems don't have a working mlockall, some aren't linkable,
  1257. # and some have it but don't declare it.
  1258. AC_CHECK_FUNCS(mlockall)
  1259. AC_CHECK_DECLS([mlockall], , , [
  1260. #ifdef HAVE_SYS_MMAN_H
  1261. #include <sys/mman.h>
  1262. #endif])
  1263. # Allow user to specify an alternate syslog facility
  1264. AC_ARG_WITH(syslog-facility,
  1265. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1266. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1267. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1268. AC_SUBST(LOGFACILITY)
  1269. # Check if we have getresuid and getresgid
  1270. AC_CHECK_FUNCS(getresuid getresgid)
  1271. # Check for gethostbyname_r in all its glorious incompatible versions.
  1272. # (This logic is based on that in Python's configure.in)
  1273. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1274. [Define this if you have any gethostbyname_r()])
  1275. AC_CHECK_FUNC(gethostbyname_r, [
  1276. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1277. OLD_CFLAGS=$CFLAGS
  1278. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1279. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
  1280. #include <netdb.h>
  1281. ], [[
  1282. char *cp1, *cp2;
  1283. struct hostent *h1, *h2;
  1284. int i1, i2;
  1285. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1286. ]])],[
  1287. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1288. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1289. [Define this if gethostbyname_r takes 6 arguments])
  1290. AC_MSG_RESULT(6)
  1291. ], [
  1292. AC_TRY_COMPILE([
  1293. #include <netdb.h>
  1294. ], [
  1295. char *cp1, *cp2;
  1296. struct hostent *h1;
  1297. int i1, i2;
  1298. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1299. ], [
  1300. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1301. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1302. [Define this if gethostbyname_r takes 5 arguments])
  1303. AC_MSG_RESULT(5)
  1304. ], [
  1305. AC_TRY_COMPILE([
  1306. #include <netdb.h>
  1307. ], [
  1308. char *cp1;
  1309. struct hostent *h1;
  1310. struct hostent_data hd;
  1311. (void) gethostbyname_r(cp1,h1,&hd);
  1312. ], [
  1313. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1314. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1315. [Define this if gethostbyname_r takes 3 arguments])
  1316. AC_MSG_RESULT(3)
  1317. ], [
  1318. AC_MSG_RESULT(0)
  1319. ])
  1320. ])
  1321. ])
  1322. CFLAGS=$OLD_CFLAGS
  1323. ])
  1324. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1325. tor_cv_have_func_macro,
  1326. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1327. #include <stdio.h>
  1328. int main(int c, char **v) { puts(__func__); }])],
  1329. tor_cv_have_func_macro=yes,
  1330. tor_cv_have_func_macro=no))
  1331. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1332. tor_cv_have_FUNC_macro,
  1333. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1334. #include <stdio.h>
  1335. int main(int c, char **v) { puts(__FUNC__); }])],
  1336. tor_cv_have_FUNC_macro=yes,
  1337. tor_cv_have_FUNC_macro=no))
  1338. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1339. tor_cv_have_FUNCTION_macro,
  1340. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1341. #include <stdio.h>
  1342. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1343. tor_cv_have_FUNCTION_macro=yes,
  1344. tor_cv_have_FUNCTION_macro=no))
  1345. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1346. tor_cv_have_environ_declared,
  1347. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1348. #ifdef HAVE_UNISTD_H
  1349. #include <unistd.h>
  1350. #endif
  1351. #include <stdlib.h>
  1352. int main(int c, char **v) { char **t = environ; }])],
  1353. tor_cv_have_environ_declared=yes,
  1354. tor_cv_have_environ_declared=no))
  1355. if test "$tor_cv_have_func_macro" = "yes"; then
  1356. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1357. fi
  1358. if test "$tor_cv_have_FUNC_macro" = "yes"; then
  1359. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1360. fi
  1361. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1362. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1363. [Defined if the compiler supports __FUNCTION__])
  1364. fi
  1365. if test "$tor_cv_have_environ_declared" = "yes"; then
  1366. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1367. [Defined if we have extern char **environ already declared])
  1368. fi
  1369. # $prefix stores the value of the --prefix command line option, or
  1370. # NONE if the option wasn't set. In the case that it wasn't set, make
  1371. # it be the default, so that we can use it to expand directories now.
  1372. if test "x$prefix" = "xNONE"; then
  1373. prefix=$ac_default_prefix
  1374. fi
  1375. # and similarly for $exec_prefix
  1376. if test "x$exec_prefix" = "xNONE"; then
  1377. exec_prefix=$prefix
  1378. fi
  1379. if test "x$BUILDDIR" = "x"; then
  1380. BUILDDIR=`pwd`
  1381. fi
  1382. AC_SUBST(BUILDDIR)
  1383. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1384. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1385. if test "x$CONFDIR" = "x"; then
  1386. CONFDIR=`eval echo $sysconfdir/tor`
  1387. fi
  1388. AC_SUBST(CONFDIR)
  1389. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1390. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1391. BINDIR=`eval echo $bindir`
  1392. AC_SUBST(BINDIR)
  1393. LOCALSTATEDIR=`eval echo $localstatedir`
  1394. AC_SUBST(LOCALSTATEDIR)
  1395. if test "$bwin32" = "true"; then
  1396. # Test if the linker supports the --nxcompat and --dynamicbase options
  1397. # for Windows
  1398. save_LDFLAGS="$LDFLAGS"
  1399. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1400. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1401. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1402. [AC_MSG_RESULT([yes])]
  1403. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1404. [AC_MSG_RESULT([no])]
  1405. )
  1406. LDFLAGS="$save_LDFLAGS"
  1407. fi
  1408. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1409. # than autoconf's macros like.
  1410. if test "$GCC" = "yes"; then
  1411. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1412. # accident waiting to happen.
  1413. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1414. else
  1415. # Override optimization level for non-gcc compilers
  1416. CFLAGS="$CFLAGS -O"
  1417. enable_gcc_warnings=no
  1418. enable_gcc_warnings_advisory=no
  1419. fi
  1420. # Warnings implies advisory-warnings and -Werror.
  1421. if test "$enable_gcc_warnings" = "yes"; then
  1422. enable_gcc_warnings_advisory=yes
  1423. enable_fatal_warnings=yes
  1424. fi
  1425. # OS X Lion started deprecating the system openssl. Let's just disable
  1426. # all deprecation warnings on OS X. Also, to potentially make the binary
  1427. # a little smaller, let's enable dead_strip.
  1428. case "$host_os" in
  1429. darwin*)
  1430. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1431. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1432. esac
  1433. # Add some more warnings which we use in development but not in the
  1434. # released versions. (Some relevant gcc versions can't handle these.)
  1435. #
  1436. # Note that we have to do this near the end of the autoconf process, or
  1437. # else we may run into problems when these warnings hit on the testing C
  1438. # programs that autoconf wants to build.
  1439. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1440. case "$host" in
  1441. *-*-openbsd* | *-*-bitrig*)
  1442. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1443. # That's fine, except that the headers don't pass -Wredundant-decls.
  1444. # Therefore, let's disable -Wsystem-headers when we're building
  1445. # with maximal warnings on OpenBSD.
  1446. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1447. esac
  1448. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1449. # have it work better.
  1450. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1451. # This warning was added in gcc 4.3, but it appears to generate
  1452. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1453. #CFLAGS="$CFLAGS -Wlogical-op"
  1454. m4_foreach_w([warning_flag], [
  1455. -Waddress
  1456. -Waddress-of-array-temporary
  1457. -Waddress-of-temporary
  1458. -Wambiguous-macro
  1459. -Wanonymous-pack-parens
  1460. -Warc
  1461. -Warc-abi
  1462. -Warc-bridge-casts-disallowed-in-nonarc
  1463. -Warc-maybe-repeated-use-of-weak
  1464. -Warc-performSelector-leaks
  1465. -Warc-repeated-use-of-weak
  1466. -Warray-bounds
  1467. -Warray-bounds-pointer-arithmetic
  1468. -Wasm
  1469. -Wasm-operand-widths
  1470. -Watomic-properties
  1471. -Watomic-property-with-user-defined-accessor
  1472. -Wauto-import
  1473. -Wauto-storage-class
  1474. -Wauto-var-id
  1475. -Wavailability
  1476. -Wbackslash-newline-escape
  1477. -Wbad-array-new-length
  1478. -Wbind-to-temporary-copy
  1479. -Wbitfield-constant-conversion
  1480. -Wbool-conversion
  1481. -Wbool-conversions
  1482. -Wbuiltin-requires-header
  1483. -Wchar-align
  1484. -Wcompare-distinct-pointer-types
  1485. -Wcomplex-component-init
  1486. -Wconditional-type-mismatch
  1487. -Wconfig-macros
  1488. -Wconstant-conversion
  1489. -Wconstant-logical-operand
  1490. -Wconstexpr-not-const
  1491. -Wcustom-atomic-properties
  1492. -Wdangling-field
  1493. -Wdangling-initializer-list
  1494. -Wdate-time
  1495. -Wdelegating-ctor-cycles
  1496. -Wdeprecated-implementations
  1497. -Wdeprecated-register
  1498. -Wdirect-ivar-access
  1499. -Wdiscard-qual
  1500. -Wdistributed-object-modifiers
  1501. -Wdivision-by-zero
  1502. -Wdollar-in-identifier-extension
  1503. -Wdouble-promotion
  1504. -Wduplicate-decl-specifier
  1505. -Wduplicate-enum
  1506. -Wduplicate-method-arg
  1507. -Wduplicate-method-match
  1508. -Wduplicated-cond
  1509. -Wdynamic-class-memaccess
  1510. -Wembedded-directive
  1511. -Wempty-translation-unit
  1512. -Wenum-conversion
  1513. -Wexit-time-destructors
  1514. -Wexplicit-ownership-type
  1515. -Wextern-initializer
  1516. -Wextra
  1517. -Wextra-semi
  1518. -Wextra-tokens
  1519. -Wflexible-array-extensions
  1520. -Wfloat-conversion
  1521. -Wformat-non-iso
  1522. -Wfour-char-constants
  1523. -Wgcc-compat
  1524. -Wglobal-constructors
  1525. -Wgnu-array-member-paren-init
  1526. -Wgnu-designator
  1527. -Wgnu-static-float-init
  1528. -Wheader-guard
  1529. -Wheader-hygiene
  1530. -Widiomatic-parentheses
  1531. -Wignored-attributes
  1532. -Wimplicit-atomic-properties
  1533. -Wimplicit-conversion-floating-point-to-bool
  1534. -Wimplicit-exception-spec-mismatch
  1535. -Wimplicit-fallthrough
  1536. -Wimplicit-fallthrough-per-function
  1537. -Wimplicit-retain-self
  1538. -Wimport-preprocessor-directive-pedantic
  1539. -Wincompatible-library-redeclaration
  1540. -Wincompatible-pointer-types-discards-qualifiers
  1541. -Wincomplete-implementation
  1542. -Wincomplete-module
  1543. -Wincomplete-umbrella
  1544. -Winit-self
  1545. -Wint-conversions
  1546. -Wint-to-void-pointer-cast
  1547. -Winteger-overflow
  1548. -Winvalid-constexpr
  1549. -Winvalid-iboutlet
  1550. -Winvalid-noreturn
  1551. -Winvalid-pp-token
  1552. -Winvalid-source-encoding
  1553. -Winvalid-token-paste
  1554. -Wknr-promoted-parameter
  1555. -Wlanguage-extension-token
  1556. -Wlarge-by-value-copy
  1557. -Wliteral-conversion
  1558. -Wliteral-range
  1559. -Wlocal-type-template-args
  1560. -Wlogical-op
  1561. -Wloop-analysis
  1562. -Wmain-return-type
  1563. -Wmalformed-warning-check
  1564. -Wmethod-signatures
  1565. -Wmicrosoft
  1566. -Wmicrosoft-exists
  1567. -Wmismatched-parameter-types
  1568. -Wmismatched-return-types
  1569. -Wmissing-field-initializers
  1570. -Wmissing-format-attribute
  1571. -Wmissing-noreturn
  1572. -Wmissing-selector-name
  1573. -Wmissing-sysroot
  1574. -Wmissing-variable-declarations
  1575. -Wmodule-conflict
  1576. -Wnested-anon-types
  1577. -Wnewline-eof
  1578. -Wnon-literal-null-conversion
  1579. -Wnon-pod-varargs
  1580. -Wnonportable-cfstrings
  1581. -Wnormalized=id
  1582. -Wnull-arithmetic
  1583. -Wnull-character
  1584. -Wnull-conversion
  1585. -Wnull-dereference
  1586. -Wout-of-line-declaration
  1587. -Wover-aligned
  1588. -Woverlength-strings
  1589. -Woverride-init
  1590. -Woverriding-method-mismatch
  1591. -Wpointer-type-mismatch
  1592. -Wpredefined-identifier-outside-function
  1593. -Wprotocol-property-synthesis-ambiguity
  1594. -Wreadonly-iboutlet-property
  1595. -Wreadonly-setter-attrs
  1596. -Wreceiver-expr
  1597. -Wreceiver-forward-class
  1598. -Wreceiver-is-weak
  1599. -Wreinterpret-base-class
  1600. -Wrequires-super-attribute
  1601. -Wreserved-user-defined-literal
  1602. -Wreturn-stack-address
  1603. -Wsection
  1604. -Wselector-type-mismatch
  1605. -Wsentinel
  1606. -Wserialized-diagnostics
  1607. -Wshadow
  1608. -Wshift-count-negative
  1609. -Wshift-count-overflow
  1610. -Wshift-negative-value
  1611. -Wshift-overflow=2
  1612. -Wshift-sign-overflow
  1613. -Wshorten-64-to-32
  1614. -Wsizeof-array-argument
  1615. -Wsource-uses-openmp
  1616. -Wstatic-float-init
  1617. -Wstatic-in-inline
  1618. -Wstatic-local-in-inline
  1619. -Wstrict-overflow=2
  1620. -Wstring-compare
  1621. -Wstring-conversion
  1622. -Wstrlcpy-strlcat-size
  1623. -Wstrncat-size
  1624. -Wsuggest-attribute=format
  1625. -Wsuggest-attribute=noreturn
  1626. -Wsuper-class-method-mismatch
  1627. -Wswitch-bool
  1628. -Wsync-nand
  1629. -Wtautological-constant-out-of-range-compare
  1630. -Wtentative-definition-incomplete-type
  1631. -Wthread-safety
  1632. -Wthread-safety-analysis
  1633. -Wthread-safety-attributes
  1634. -Wthread-safety-beta
  1635. -Wthread-safety-precise
  1636. -Wtrampolines
  1637. -Wtype-safety
  1638. -Wtypedef-redefinition
  1639. -Wtypename-missing
  1640. -Wundefined-inline
  1641. -Wundefined-internal
  1642. -Wundefined-reinterpret-cast
  1643. -Wunicode
  1644. -Wunicode-whitespace
  1645. -Wunknown-warning-option
  1646. -Wunnamed-type-template-args
  1647. -Wunneeded-member-function
  1648. -Wunsequenced
  1649. -Wunsupported-visibility
  1650. -Wunused-but-set-parameter
  1651. -Wunused-but-set-variable
  1652. -Wunused-command-line-argument
  1653. -Wunused-const-variable=2
  1654. -Wunused-exception-parameter
  1655. -Wunused-local-typedefs
  1656. -Wunused-member-function
  1657. -Wunused-sanitize-argument
  1658. -Wunused-volatile-lvalue
  1659. -Wuser-defined-literals
  1660. -Wvariadic-macros
  1661. -Wvector-conversion
  1662. -Wvector-conversions
  1663. -Wvexing-parse
  1664. -Wvisibility
  1665. -Wvla-extension
  1666. -Wzero-length-array
  1667. ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
  1668. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1669. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1670. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1671. CFLAGS="$CFLAGS -Wwrite-strings"
  1672. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1673. CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
  1674. CFLAGS="$CFLAGS -Wunused-parameter "
  1675. # These interfere with building main() { return 0; }, which autoconf
  1676. # likes to use as its default program.
  1677. CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
  1678. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  1679. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  1680. fi
  1681. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  1682. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  1683. fi
  1684. if test "x$enable_fatal_warnings" = "xyes"; then
  1685. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  1686. # default autoconf programs are full of errors.
  1687. CFLAGS="$CFLAGS -Werror"
  1688. fi
  1689. fi
  1690. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  1691. case "$host_os" in
  1692. darwin*)
  1693. AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
  1694. esac
  1695. fi
  1696. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  1697. AC_CONFIG_FILES([
  1698. Doxyfile
  1699. Makefile
  1700. contrib/dist/suse/tor.sh
  1701. contrib/operator-tools/tor.logrotate
  1702. contrib/dist/tor.sh
  1703. contrib/dist/torctl
  1704. contrib/dist/tor.service
  1705. src/config/torrc.sample
  1706. src/config/torrc.minimal
  1707. scripts/maint/checkOptionDocs.pl
  1708. scripts/maint/updateVersions.pl
  1709. ])
  1710. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  1711. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  1712. for file in $regular_mans ; do
  1713. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  1714. echo "==================================";
  1715. echo;
  1716. echo "Building Tor has failed since manpages cannot be built.";
  1717. echo;
  1718. echo "You need asciidoc installed to be able to build the manpages.";
  1719. echo "To build without manpages, use the --disable-asciidoc argument";
  1720. echo "when calling configure.";
  1721. echo;
  1722. echo "==================================";
  1723. exit 1;
  1724. fi
  1725. done
  1726. fi
  1727. AC_OUTPUT