configure.ac 78 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) 2007-2019, The Tor Project, Inc.
  4. dnl See LICENSE for licensing information
  5. AC_PREREQ([2.63])
  6. AC_INIT([tor],[0.4.0.3-alpha-dev])
  7. AC_CONFIG_SRCDIR([src/app/main/tor_main.c])
  8. AC_CONFIG_MACRO_DIR([m4])
  9. # DO NOT EDIT THIS DEFINITION BY HAND UNLESS YOU KNOW WHAT YOU'RE DOING.
  10. #
  11. # The update_versions.py script updates this definition when the
  12. # version number changes. Tor uses it to make sure that it
  13. # only shuts down for missing "required protocols" when those protocols
  14. # are listed as required by a consensus after this date.
  15. AC_DEFINE(APPROX_RELEASE_DATE, ["2019-03-23"], # for 0.4.0.3-alpha-dev
  16. [Approximate date when this software was released. (Updated when the version changes.)])
  17. # "foreign" means we don't follow GNU package layout standards
  18. # "1.11" means we require automake version 1.11 or newer
  19. # "subdir-objects" means put .o files in the same directory as the .c files
  20. AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects -Wall -Werror])
  21. m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
  22. AC_CONFIG_HEADERS([orconfig.h])
  23. AC_USE_SYSTEM_EXTENSIONS
  24. AC_CANONICAL_HOST
  25. PKG_PROG_PKG_CONFIG
  26. AC_ARG_ENABLE(openbsd-malloc,
  27. AS_HELP_STRING(--enable-openbsd-malloc, [use malloc code from OpenBSD. Linux only. Deprecated: see --with-malloc]))
  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. AC_ARG_ENABLE(libfuzzer,
  45. AS_HELP_STRING(--enable-libfuzzer, [build extra fuzzers based on 'libfuzzer']))
  46. AC_ARG_ENABLE(oss-fuzz,
  47. AS_HELP_STRING(--enable-oss-fuzz, [build extra fuzzers based on 'oss-fuzz' environment]))
  48. AC_ARG_ENABLE(memory-sentinels,
  49. AS_HELP_STRING(--disable-memory-sentinels, [disable code that tries to prevent some kinds of memory access bugs. For fuzzing only.]))
  50. AC_ARG_ENABLE(rust,
  51. AS_HELP_STRING(--enable-rust, [enable rust integration]))
  52. AC_ARG_ENABLE(cargo-online-mode,
  53. AS_HELP_STRING(--enable-cargo-online-mode, [Allow cargo to make network requests to fetch crates. For builds with rust only.]))
  54. AC_ARG_ENABLE(restart-debugging,
  55. AS_HELP_STRING(--enable-restart-debugging, [Build Tor with support for debugging in-process restart. Developers only.]))
  56. AC_ARG_ENABLE(zstd-advanced-apis,
  57. AS_HELP_STRING(--disable-zstd-advanced-apis, [Build without support for zstd's "static-only" APIs.]))
  58. AC_ARG_ENABLE(nss,
  59. AS_HELP_STRING(--enable-nss, [Use Mozilla's NSS TLS library. (EXPERIMENTAL)]))
  60. AC_ARG_ENABLE(pic,
  61. AS_HELP_STRING(--enable-pic, [Build Tor's binaries as position-independent code, suitable to link as a library.]))
  62. if test "x$enable_coverage" != "xyes" -a "x$enable_asserts_in_tests" = "xno" ; then
  63. AC_MSG_ERROR([Can't disable assertions outside of coverage build])
  64. fi
  65. AM_CONDITIONAL(UNITTESTS_ENABLED, test "x$enable_unittests" != "xno")
  66. AM_CONDITIONAL(COVERAGE_ENABLED, test "x$enable_coverage" = "xyes")
  67. AM_CONDITIONAL(DISABLE_ASSERTS_IN_UNIT_TESTS, test "x$enable_asserts_in_tests" = "xno")
  68. AM_CONDITIONAL(LIBFUZZER_ENABLED, test "x$enable_libfuzzer" = "xyes")
  69. AM_CONDITIONAL(OSS_FUZZ_ENABLED, test "x$enable_oss_fuzz" = "xyes")
  70. AM_CONDITIONAL(USE_RUST, test "x$enable_rust" = "xyes")
  71. AM_CONDITIONAL(USE_NSS, test "x$enable_nss" = "xyes")
  72. AM_CONDITIONAL(USE_OPENSSL, test "x$enable_nss" != "xyes")
  73. if test "x$enable_nss" = "xyes"; then
  74. AC_DEFINE(ENABLE_NSS, 1,
  75. [Defined if we're building with NSS.])
  76. else
  77. AC_DEFINE(ENABLE_OPENSSL, 1,
  78. [Defined if we're building with OpenSSL or LibreSSL])
  79. fi
  80. if test "$enable_static_tor" = "yes"; then
  81. enable_static_libevent="yes";
  82. enable_static_openssl="yes";
  83. enable_static_zlib="yes";
  84. CFLAGS="$CFLAGS -static"
  85. fi
  86. if test "$enable_system_torrc" = "no"; then
  87. AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
  88. [Defined if we're not going to look for a torrc in SYSCONF])
  89. fi
  90. if test "$enable_memory_sentinels" = "no"; then
  91. AC_DEFINE(DISABLE_MEMORY_SENTINELS, 1,
  92. [Defined if we're turning off memory safety code to look for bugs])
  93. fi
  94. AC_ARG_ENABLE(asciidoc,
  95. AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
  96. [case "${enableval}" in
  97. "yes") asciidoc=true ;;
  98. "no") asciidoc=false ;;
  99. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  100. esac], [asciidoc=true])
  101. # systemd notify support
  102. AC_ARG_ENABLE(systemd,
  103. AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
  104. [case "${enableval}" in
  105. "yes") systemd=true ;;
  106. "no") systemd=false ;;
  107. * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
  108. esac], [systemd=auto])
  109. if test "$enable_restart_debugging" = "yes"; then
  110. AC_DEFINE(ENABLE_RESTART_DEBUGGING, 1,
  111. [Defined if we're building with support for in-process restart debugging.])
  112. fi
  113. if test "$enable_zstd_advanced_apis" != "no"; then
  114. AC_DEFINE(ENABLE_ZSTD_ADVANCED_APIS, 1,
  115. [Defined if we're going to try to use zstd's "static-only" APIs.])
  116. fi
  117. # systemd support
  118. if test "x$enable_systemd" = "xno"; then
  119. have_systemd=no;
  120. else
  121. PKG_CHECK_MODULES(SYSTEMD,
  122. [libsystemd-daemon],
  123. have_systemd=yes,
  124. have_systemd=no)
  125. if test "x$have_systemd" = "xno"; then
  126. AC_MSG_NOTICE([Okay, checking for systemd a different way...])
  127. PKG_CHECK_MODULES(SYSTEMD,
  128. [libsystemd],
  129. have_systemd=yes,
  130. have_systemd=no)
  131. fi
  132. fi
  133. if test "x$have_systemd" = "xyes"; then
  134. AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
  135. TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
  136. TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
  137. PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
  138. [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
  139. fi
  140. AC_SUBST(TOR_SYSTEMD_CFLAGS)
  141. AC_SUBST(TOR_SYSTEMD_LIBS)
  142. if test "x$enable_systemd" = "xyes" -a "x$have_systemd" != "xyes" ; then
  143. AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
  144. fi
  145. case "$host" in
  146. *-*-solaris* )
  147. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  148. ;;
  149. esac
  150. AC_ARG_ENABLE(gcc-warnings,
  151. AS_HELP_STRING(--enable-gcc-warnings, [deprecated alias for enable-fatal-warnings]))
  152. AC_ARG_ENABLE(fatal-warnings,
  153. AS_HELP_STRING(--enable-fatal-warnings, [tell the compiler to treat all warnings as errors.]))
  154. AC_ARG_ENABLE(gcc-warnings-advisory,
  155. AS_HELP_STRING(--disable-gcc-warnings-advisory, [disable the regular verbose warnings]))
  156. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  157. AC_ARG_ENABLE(gcc-hardening,
  158. AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
  159. dnl Deprecated --enable-expensive-hardening but keep it for now for backward compat.
  160. AC_ARG_ENABLE(expensive-hardening,
  161. AS_HELP_STRING(--enable-expensive-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  162. AC_ARG_ENABLE(fragile-hardening,
  163. AS_HELP_STRING(--enable-fragile-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  164. if test "x$enable_expensive_hardening" = "xyes" || test "x$enable_fragile_hardening" = "xyes"; then
  165. fragile_hardening="yes"
  166. AC_DEFINE(DEBUG_SMARTLIST, 1, [Enable smartlist debugging])
  167. fi
  168. dnl Linker hardening options
  169. dnl Currently these options are ELF specific - you can't use this with MacOSX
  170. AC_ARG_ENABLE(linker-hardening,
  171. AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
  172. AC_ARG_ENABLE(local-appdata,
  173. AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
  174. if test "$enable_local_appdata" = "yes"; then
  175. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  176. [Defined if we default to host local appdata paths on Windows])
  177. fi
  178. AC_ARG_ENABLE(tool-name-check,
  179. AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
  180. AC_ARG_ENABLE(seccomp,
  181. AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
  182. AC_ARG_ENABLE(libscrypt,
  183. AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
  184. dnl Enable event tracing which are transformed to debug log statement.
  185. AC_ARG_ENABLE(event-tracing-debug,
  186. AS_HELP_STRING(--enable-event-tracing-debug, [build with event tracing to debug log]))
  187. AM_CONDITIONAL([USE_EVENT_TRACING_DEBUG], [test "x$enable_event_tracing_debug" = "xyes"])
  188. if test x$enable_event_tracing_debug = xyes; then
  189. AC_DEFINE([USE_EVENT_TRACING_DEBUG], [1], [Tracing framework to log debug])
  190. AC_DEFINE([TOR_EVENT_TRACING_ENABLED], [1], [Compile the event tracing instrumentation])
  191. fi
  192. dnl Enable Android only features.
  193. AC_ARG_ENABLE(android,
  194. AS_HELP_STRING(--enable-android, [build with Android features enabled]))
  195. AM_CONDITIONAL([USE_ANDROID], [test "x$enable_android" = "xyes"])
  196. if test "x$enable_android" = "xyes"; then
  197. AC_DEFINE([USE_ANDROID], [1], [Compile with Android specific features enabled])
  198. dnl Check if the Android log library is available.
  199. AC_CHECK_HEADERS([android/log.h])
  200. AC_SEARCH_LIBS(__android_log_write, [log])
  201. fi
  202. dnl ---
  203. dnl Tor modules options. These options are namespaced with --disable-module-XXX
  204. dnl ---
  205. dnl All our modules.
  206. m4_define(MODULES, dirauth)
  207. dnl Directory Authority module.
  208. AC_ARG_ENABLE([module-dirauth],
  209. AS_HELP_STRING([--disable-module-dirauth],
  210. [Do not build tor with the dirauth module]),
  211. [], dnl Action if-given
  212. AC_DEFINE([HAVE_MODULE_DIRAUTH], [1],
  213. [Compile with Directory Authority feature support]))
  214. AM_CONDITIONAL(BUILD_MODULE_DIRAUTH, [test "x$enable_module_dirauth" != "xno"])
  215. dnl Helper variables.
  216. TOR_MODULES_ALL_ENABLED=
  217. AC_DEFUN([ADD_MODULE], [
  218. MODULE=m4_toupper($1)
  219. TOR_MODULES_ALL_ENABLED="${TOR_MODULES_ALL_ENABLED} -DHAVE_MODULE_${MODULE}=1"
  220. ])
  221. m4_foreach_w([module], MODULES, [ADD_MODULE([module])])
  222. AC_SUBST(TOR_MODULES_ALL_ENABLED)
  223. dnl check for the correct "ar" when cross-compiling.
  224. dnl (AM_PROG_AR was new in automake 1.11.2, which we do not yet require,
  225. dnl so kludge up a replacement for the case where it isn't there yet.)
  226. m4_ifdef([AM_PROG_AR],
  227. [AM_PROG_AR],
  228. [AN_MAKEVAR([AR], [AC_PROG_AR])
  229. AN_PROGRAM([ar], [AC_PROG_AR])
  230. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [:])])
  231. AC_PROG_AR])
  232. dnl Check whether the above macro has settled for a simply named tool even
  233. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  234. dnl because that will find any cc on the system, not only the cross-compiler,
  235. dnl and then verify that a binary built with this compiler runs on the
  236. dnl build system. It will then come to the false conclusion that we're not
  237. dnl cross-compiling.
  238. if test "x$enable_tool_name_check" != "xno"; then
  239. if test "x$ac_tool_warned" = "xyes"; then
  240. AC_MSG_ERROR([We are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  241. elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
  242. AC_MSG_ERROR([We think we are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  243. fi
  244. fi
  245. AC_PROG_CC
  246. AC_PROG_CPP
  247. AC_PROG_MAKE_SET
  248. AC_PROG_RANLIB
  249. AC_PROG_SED
  250. AC_ARG_VAR([PERL], [path to Perl binary])
  251. AC_CHECK_PROGS([PERL], [perl])
  252. AM_CONDITIONAL(USE_PERL, [test "x$ac_cv_prog_PERL" != "x"])
  253. dnl check for asciidoc and a2x
  254. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  255. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  256. AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
  257. AM_PROG_CC_C_O
  258. AC_PROG_CC_C99
  259. AC_ARG_VAR([PYTHON], [path to Python binary])
  260. AC_CHECK_PROGS(PYTHON, [ \
  261. python3 \
  262. python3.8 python3.7 python3.6 python3.5 python3.4 \
  263. python \
  264. python2 python2.7])
  265. if test "x$PYTHON" = "x"; then
  266. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  267. fi
  268. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  269. dnl List all external rust crates we depend on here. Include the version
  270. rust_crates=" \
  271. digest-0.7.2 \
  272. libc-0.2.39 \
  273. "
  274. AC_SUBST(rust_crates)
  275. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  276. AC_C_FLEXIBLE_ARRAY_MEMBER
  277. ], [
  278. dnl Maybe we've got an old autoconf...
  279. AC_CACHE_CHECK([for flexible array members],
  280. tor_cv_c_flexarray,
  281. [AC_COMPILE_IFELSE(
  282. AC_LANG_PROGRAM([
  283. struct abc { int a; char b[]; };
  284. ], [
  285. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  286. def->b[0] = 33;
  287. ]),
  288. [tor_cv_c_flexarray=yes],
  289. [tor_cv_c_flexarray=no])])
  290. if test "$tor_cv_flexarray" = "yes"; then
  291. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  292. else
  293. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  294. fi
  295. ])
  296. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  297. tor_cv_c_c99_decl,
  298. [AC_COMPILE_IFELSE(
  299. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  300. [tor_cv_c_c99_decl=yes],
  301. [tor_cv_c_c99_decl=no] )])
  302. if test "$tor_cv_c_c99_decl" != "yes"; then
  303. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  304. fi
  305. AC_CACHE_CHECK([for working C99 designated initializers],
  306. tor_cv_c_c99_designated_init,
  307. [AC_COMPILE_IFELSE(
  308. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  309. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  310. [tor_cv_c_c99_designated_init=yes],
  311. [tor_cv_c_c99_designated_init=no] )])
  312. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  313. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  314. fi
  315. TORUSER=_tor
  316. AC_ARG_WITH(tor-user,
  317. AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
  318. [
  319. TORUSER=$withval
  320. ]
  321. )
  322. AC_SUBST(TORUSER)
  323. TORGROUP=_tor
  324. AC_ARG_WITH(tor-group,
  325. AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
  326. [
  327. TORGROUP=$withval
  328. ]
  329. )
  330. AC_SUBST(TORGROUP)
  331. dnl If _WIN32 is defined and non-zero, we are building for win32
  332. AC_MSG_CHECKING([for win32])
  333. AC_RUN_IFELSE([AC_LANG_SOURCE([
  334. int main(int c, char **v) {
  335. #ifdef _WIN32
  336. #if _WIN32
  337. return 0;
  338. #else
  339. return 1;
  340. #endif
  341. #else
  342. return 2;
  343. #endif
  344. }])],
  345. bwin32=true; AC_MSG_RESULT([yes]),
  346. bwin32=false; AC_MSG_RESULT([no]),
  347. bwin32=cross; AC_MSG_RESULT([cross])
  348. )
  349. if test "$bwin32" = "cross"; then
  350. AC_MSG_CHECKING([for win32 (cross)])
  351. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  352. #ifdef _WIN32
  353. int main(int c, char **v) {return 0;}
  354. #else
  355. #error
  356. int main(int c, char **v) {return x(y);}
  357. #endif
  358. ])],
  359. bwin32=true; AC_MSG_RESULT([yes]),
  360. bwin32=false; AC_MSG_RESULT([no]))
  361. fi
  362. AH_BOTTOM([
  363. #ifdef _WIN32
  364. /* Defined to access windows functions and definitions for >=WinXP */
  365. # ifndef WINVER
  366. # define WINVER 0x0501
  367. # endif
  368. /* Defined to access _other_ windows functions and definitions for >=WinXP */
  369. # ifndef _WIN32_WINNT
  370. # define _WIN32_WINNT 0x0501
  371. # endif
  372. /* Defined to avoid including some windows headers as part of Windows.h */
  373. # ifndef WIN32_LEAN_AND_MEAN
  374. # define WIN32_LEAN_AND_MEAN 1
  375. # endif
  376. #endif
  377. ])
  378. AM_CONDITIONAL(WIN32, test "x$bwin32" = "xtrue")
  379. AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
  380. AM_CONDITIONAL(BUILD_LIBTORRUNNER, test "x$bwin32" != "xtrue")
  381. dnl Enable C99 when compiling with MIPSpro
  382. AC_MSG_CHECKING([for MIPSpro compiler])
  383. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  384. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  385. #error
  386. return x(y);
  387. #endif
  388. ])],
  389. bmipspro=false; AC_MSG_RESULT(no),
  390. bmipspro=true; AC_MSG_RESULT(yes))
  391. if test "$bmipspro" = "true"; then
  392. CFLAGS="$CFLAGS -c99"
  393. fi
  394. AC_C_BIGENDIAN
  395. AC_ARG_VAR([TOR_RUST_TARGET], [Rust target, must be specified when cross-compiling (HOST != BUILD). example: i686-pc-windows-gnu])
  396. if test "x$enable_rust" = "xyes"; then
  397. AC_ARG_VAR([RUSTC], [path to the rustc binary])
  398. AC_CHECK_PROG([RUSTC], [rustc], [rustc],[no])
  399. if test "x$RUSTC" = "xno"; then
  400. AC_MSG_ERROR([rustc unavailable but rust integration requested.])
  401. fi
  402. AC_ARG_VAR([CARGO], [path to the cargo binary])
  403. AC_CHECK_PROG([CARGO], [cargo], [cargo],[no])
  404. if test "x$CARGO" = "xno"; then
  405. AC_MSG_ERROR([cargo unavailable but rust integration requested.])
  406. fi
  407. AC_DEFINE([HAVE_RUST], 1, [have Rust])
  408. if test "x$enable_fatal_warnings" = "xyes"; then
  409. RUST_WARN=
  410. else
  411. RUST_WARN=#
  412. fi
  413. if test "x$enable_cargo_online_mode" = "xyes"; then
  414. CARGO_ONLINE=
  415. RUST_DL=#
  416. else
  417. CARGO_ONLINE=--frozen
  418. RUST_DL=
  419. dnl When we're not allowed to touch the network, we need crate dependencies
  420. dnl locally available.
  421. AC_MSG_CHECKING([rust crate dependencies])
  422. AC_ARG_VAR([TOR_RUST_DEPENDENCIES], [path to directory with local crate mirror])
  423. if test "x$TOR_RUST_DEPENDENCIES" = "x"; then
  424. TOR_RUST_DEPENDENCIES="${srcdir}/src/ext/rust/crates"
  425. fi
  426. dnl Check whether the path exists before we try to cd into it.
  427. if test ! -d "$TOR_RUST_DEPENDENCIES"; then
  428. AC_MSG_ERROR([Rust dependency directory $TOR_RUST_DEPENDENCIES does not exist. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
  429. ERRORED=1
  430. fi
  431. dnl Make the path absolute, since we'll be using it from within a
  432. dnl subdirectory.
  433. TOR_RUST_DEPENDENCIES=$(cd "$TOR_RUST_DEPENDENCIES" ; pwd)
  434. for dep in $rust_crates; do
  435. if test ! -d "$TOR_RUST_DEPENDENCIES"/"$dep"; then
  436. AC_MSG_ERROR([Failure to find rust dependency $TOR_RUST_DEPENDENCIES/$dep. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
  437. ERRORED=1
  438. fi
  439. done
  440. if test "x$ERRORED" = "x"; then
  441. AC_MSG_RESULT([yes])
  442. fi
  443. fi
  444. dnl For now both MSVC and MinGW rust libraries will output static libs with
  445. dnl the MSVC naming convention.
  446. if test "$bwin32" = "true"; then
  447. tor_rust_static_name=tor_rust.lib
  448. else
  449. tor_rust_static_name=libtor_rust.a
  450. fi
  451. AC_CANONICAL_BUILD
  452. if test -n "$TOR_RUST_TARGET"; then
  453. if test "$host" = "$build"; then
  454. AC_MSG_ERROR([HOST = BUILD is invalid if TOR_RUST_TARGET is specified, see configure --help for more information.])
  455. fi
  456. RUST_TARGET_PROP="target = '$TOR_RUST_TARGET'"
  457. TOR_RUST_LIB_PATH="src/rust/target/$TOR_RUST_TARGET/release/$tor_rust_static_name"
  458. else
  459. if test "$host" != "$build"; then
  460. AC_MSG_ERROR([TOR_RUST_TARGET must be specified when cross-compiling with Rust enabled.])
  461. fi
  462. RUST_TARGET_PROP=
  463. TOR_RUST_LIB_PATH="src/rust/target/release/$tor_rust_static_name"
  464. fi
  465. AC_SUBST(RUST_TARGET_PROP)
  466. AC_SUBST(TOR_RUST_LIB_PATH)
  467. AC_SUBST(CARGO_ONLINE)
  468. AC_SUBST(RUST_WARN)
  469. AC_SUBST(RUST_DL)
  470. dnl Let's check the rustc version, too
  471. AC_MSG_CHECKING([rust version])
  472. RUSTC_VERSION=`$RUSTC --version`
  473. RUSTC_VERSION_MAJOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 1`
  474. RUSTC_VERSION_MINOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 2`
  475. if test "x$RUSTC_VERSION_MAJOR" = "x" -o "x$RUSTC_VERSION_MINOR" = "x"; then
  476. AC_MSG_ERROR([rustc version couldn't be identified])
  477. fi
  478. if test "$RUSTC_VERSION_MAJOR" -lt 2 -a "$RUSTC_VERSION_MINOR" -lt 14; then
  479. AC_MSG_ERROR([rustc must be at least version 1.14])
  480. fi
  481. AC_MSG_RESULT([$RUSTC_VERSION])
  482. fi
  483. AC_SEARCH_LIBS(socket, [socket network])
  484. AC_SEARCH_LIBS(gethostbyname, [nsl])
  485. AC_SEARCH_LIBS(dlopen, [dl])
  486. AC_SEARCH_LIBS(inet_aton, [resolv])
  487. AC_SEARCH_LIBS(backtrace, [execinfo])
  488. saved_LIBS="$LIBS"
  489. AC_SEARCH_LIBS([clock_gettime], [rt])
  490. if test "$LIBS" != "$saved_LIBS"; then
  491. # Looks like we need -lrt for clock_gettime().
  492. have_rt=yes
  493. fi
  494. if test "$bwin32" = "false"; then
  495. AC_SEARCH_LIBS(pthread_create, [pthread])
  496. AC_SEARCH_LIBS(pthread_detach, [pthread])
  497. fi
  498. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  499. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  500. AC_CHECK_FUNCS(
  501. _NSGetEnviron \
  502. RtlSecureZeroMemory \
  503. SecureZeroMemory \
  504. accept4 \
  505. backtrace \
  506. backtrace_symbols_fd \
  507. eventfd \
  508. explicit_bzero \
  509. timingsafe_memcmp \
  510. flock \
  511. ftime \
  512. get_current_dir_name \
  513. getaddrinfo \
  514. getdelim \
  515. getifaddrs \
  516. getline \
  517. getpass \
  518. getrlimit \
  519. gettimeofday \
  520. gmtime_r \
  521. gnu_get_libc_version \
  522. htonll \
  523. inet_aton \
  524. ioctl \
  525. issetugid \
  526. llround \
  527. localtime_r \
  528. lround \
  529. madvise \
  530. memmem \
  531. memset_s \
  532. minherit \
  533. mmap \
  534. pipe \
  535. pipe2 \
  536. prctl \
  537. readpassphrase \
  538. rint \
  539. sigaction \
  540. socketpair \
  541. statvfs \
  542. strncasecmp \
  543. strcasecmp \
  544. strlcat \
  545. strlcpy \
  546. strnlen \
  547. strptime \
  548. strtok_r \
  549. strtoull \
  550. sysconf \
  551. sysctl \
  552. truncate \
  553. uname \
  554. usleep \
  555. vasprintf \
  556. _vscprintf
  557. )
  558. # Apple messed up when they added some functions: they
  559. # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
  560. # checks.
  561. # We should only probe for these functions if we are sure that we
  562. # are not targeting OS X 10.9 or earlier.
  563. AC_MSG_CHECKING([for a pre-Yosemite OS X build target])
  564. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  565. #ifdef __APPLE__
  566. # include <AvailabilityMacros.h>
  567. # ifndef MAC_OS_X_VERSION_10_10
  568. # define MAC_OS_X_VERSION_10_10 101000
  569. # endif
  570. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  571. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_10
  572. # error "Running on Mac OS X 10.9 or earlier"
  573. # endif
  574. # endif
  575. #endif
  576. ]], [[]])],
  577. [on_macos_pre_10_10=no ; AC_MSG_RESULT([no])],
  578. [on_macos_pre_10_10=yes; AC_MSG_RESULT([yes])])
  579. if test "$on_macos_pre_10_10" = "no"; then
  580. AC_CHECK_FUNCS(
  581. mach_approximate_time \
  582. )
  583. fi
  584. # We should only probe for these functions if we are sure that we
  585. # are not targeting OSX 10.11 or earlier.
  586. AC_MSG_CHECKING([for a pre-Sierra OSX build target])
  587. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  588. #ifdef __APPLE__
  589. # include <AvailabilityMacros.h>
  590. # ifndef MAC_OS_X_VERSION_10_12
  591. # define MAC_OS_X_VERSION_10_12 101200
  592. # endif
  593. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  594. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  595. # error "Running on Mac OSX 10.11 or earlier"
  596. # endif
  597. # endif
  598. #endif
  599. ]], [[]])],
  600. [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
  601. [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
  602. if test "$on_macos_pre_10_12" = "no"; then
  603. AC_CHECK_FUNCS(
  604. clock_gettime \
  605. getentropy \
  606. )
  607. fi
  608. if test "$bwin32" != "true"; then
  609. AC_CHECK_HEADERS(pthread.h)
  610. AC_CHECK_FUNCS(pthread_create)
  611. AC_CHECK_FUNCS(pthread_condattr_setclock)
  612. fi
  613. if test "$bwin32" = "true"; then
  614. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  615. #include <windows.h>
  616. #include <conio.h>
  617. #include <wchar.h>
  618. ])
  619. fi
  620. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  621. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  622. AC_MSG_CHECKING([whether free(NULL) works])
  623. AC_RUN_IFELSE([AC_LANG_PROGRAM([
  624. #include <stdlib.h>
  625. ], [
  626. char *p = NULL;
  627. free(p);
  628. ])],
  629. [free_null_ok=true; AC_MSG_RESULT(yes)],
  630. [free_null_ok=false; AC_MSG_RESULT(no)],
  631. [free_null_ok=cross; AC_MSG_RESULT(cross)])
  632. if test "$free_null_ok" = "false"; then
  633. AC_MSG_ERROR([Your libc implementation doesn't allow free(NULL), as required by C99.])
  634. fi
  635. dnl ------------------------------------------------------
  636. dnl Where do you live, libevent? And how do we call you?
  637. if test "$bwin32" = "true"; then
  638. TOR_LIB_WS32=-lws2_32
  639. TOR_LIB_IPHLPAPI=-liphlpapi
  640. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  641. # think it's actually necessary.
  642. TOR_LIB_GDI=-lgdi32
  643. TOR_LIB_USERENV=-luserenv
  644. else
  645. TOR_LIB_WS32=
  646. TOR_LIB_GDI=
  647. TOR_LIB_USERENV=
  648. fi
  649. AC_SUBST(TOR_LIB_WS32)
  650. AC_SUBST(TOR_LIB_GDI)
  651. AC_SUBST(TOR_LIB_IPHLPAPI)
  652. AC_SUBST(TOR_LIB_USERENV)
  653. tor_libevent_pkg_redhat="libevent"
  654. tor_libevent_pkg_debian="libevent-dev"
  655. tor_libevent_devpkg_redhat="libevent-devel"
  656. tor_libevent_devpkg_debian="libevent-dev"
  657. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  658. dnl linking for static builds.
  659. STATIC_LIBEVENT_FLAGS=""
  660. if test "$enable_static_libevent" = "yes"; then
  661. if test "$have_rt" = "yes"; then
  662. STATIC_LIBEVENT_FLAGS=" -lrt "
  663. fi
  664. fi
  665. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  666. #ifdef _WIN32
  667. #include <winsock2.h>
  668. #endif
  669. #include <sys/time.h>
  670. #include <sys/types.h>
  671. #include <event2/event.h>], [
  672. #ifdef _WIN32
  673. #include <winsock2.h>
  674. #endif
  675. struct event_base;
  676. struct event_base *event_base_new(void);
  677. void event_base_free(struct event_base *);],
  678. [
  679. #ifdef _WIN32
  680. {WSADATA d; WSAStartup(0x101,&d); }
  681. #endif
  682. event_base_free(event_base_new());
  683. ], [--with-libevent-dir], [/opt/libevent])
  684. dnl Determine the incantation needed to link libevent.
  685. save_LIBS="$LIBS"
  686. save_LDFLAGS="$LDFLAGS"
  687. save_CPPFLAGS="$CPPFLAGS"
  688. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  689. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  690. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  691. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  692. if test "$enable_static_libevent" = "yes"; then
  693. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  694. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  695. else
  696. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  697. fi
  698. else
  699. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  700. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  701. 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"))
  702. if test "$ac_cv_search_event_new" != "none required"; then
  703. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  704. fi
  705. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  706. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  707. fi
  708. else
  709. AC_MSG_ERROR("libevent2 is required but the headers could not be found")
  710. fi
  711. fi
  712. dnl Now check for particular libevent functions.
  713. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
  714. evutil_secure_rng_add_bytes \
  715. evdns_base_get_nameserver_addr \
  716. ])
  717. LIBS="$save_LIBS"
  718. LDFLAGS="$save_LDFLAGS"
  719. CPPFLAGS="$save_CPPFLAGS"
  720. dnl Check that libevent is at least at version 2.0.10, the first stable
  721. dnl release of its series
  722. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  723. AC_MSG_CHECKING([whether Libevent is new enough])
  724. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  725. #include <event2/event.h>
  726. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  727. #error
  728. int x = y(zz);
  729. #else
  730. int x = 1;
  731. #endif
  732. ])], [ AC_MSG_RESULT([yes]) ],
  733. [ AC_MSG_RESULT([no])
  734. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  735. LIBS="$save_LIBS"
  736. LDFLAGS="$save_LDFLAGS"
  737. CPPFLAGS="$save_CPPFLAGS"
  738. AC_SUBST(TOR_LIBEVENT_LIBS)
  739. dnl ------------------------------------------------------
  740. dnl Where do you live, libm?
  741. dnl On some platforms (Haiku/BeOS) the math library is
  742. dnl part of libroot. In which case don't link against lm
  743. TOR_LIB_MATH=""
  744. save_LIBS="$LIBS"
  745. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  746. if test "$ac_cv_search_pow" != "none required"; then
  747. TOR_LIB_MATH="$ac_cv_search_pow"
  748. fi
  749. LIBS="$save_LIBS"
  750. AC_SUBST(TOR_LIB_MATH)
  751. dnl ------------------------------------------------------
  752. dnl Hello, NSS. You're new around here.
  753. if test "x$enable_nss" = "xyes"; then
  754. PKG_CHECK_MODULES(NSS,
  755. [nss],
  756. [have_nss=yes],
  757. [have_nss=no; AC_MSG_ERROR([You asked for NSS but I can't find it.])])
  758. AC_SUBST(NSS_CFLAGS)
  759. AC_SUBST(NSS_LIBS)
  760. fi
  761. dnl ------------------------------------------------------
  762. dnl Where do you live, openssl? And how do we call you?
  763. if test "x$enable_nss" != "xyes"; then
  764. tor_openssl_pkg_redhat="openssl"
  765. tor_openssl_pkg_debian="libssl-dev"
  766. tor_openssl_devpkg_redhat="openssl-devel"
  767. tor_openssl_devpkg_debian="libssl-dev"
  768. ALT_openssl_WITHVAL=""
  769. AC_ARG_WITH(ssl-dir,
  770. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  771. [
  772. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  773. ALT_openssl_WITHVAL="$withval"
  774. fi
  775. ])
  776. AC_MSG_NOTICE([Now, we'll look for OpenSSL >= 1.0.1])
  777. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI $TOR_LIB_WS32],
  778. [#include <openssl/ssl.h>
  779. char *getenv(const char *);],
  780. [struct ssl_cipher_st;
  781. unsigned SSL_CIPHER_get_id(const struct ssl_cipher_st *);
  782. char *getenv(const char *);],
  783. dnl This funny-looking test program calls getenv, so that the compiler
  784. dnl will neither make code that call SSL_CIPHER_get_id(NULL) [producing
  785. dnl a crash], nor optimize out the call to SSL_CIPHER_get_id().
  786. dnl We look for SSL_cipher_get_id() because it is present in
  787. dnl OpenSSL >=1.0.1, because it is not deprecated, and because Tor
  788. dnl depends on it.
  789. [if (getenv("THIS_SHOULDNT_BE_SET_X201803")) SSL_CIPHER_get_id((void *)0);], [],
  790. [/usr/local/opt/openssl /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /opt/openssl])
  791. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  792. if test "$enable_static_openssl" = "yes"; then
  793. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  794. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  795. else
  796. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  797. fi
  798. else
  799. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  800. fi
  801. AC_SUBST(TOR_OPENSSL_LIBS)
  802. dnl Now check for particular openssl functions.
  803. save_LIBS="$LIBS"
  804. save_LDFLAGS="$LDFLAGS"
  805. save_CPPFLAGS="$CPPFLAGS"
  806. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  807. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  808. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  809. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  810. #include <openssl/opensslv.h>
  811. #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
  812. #error "too old"
  813. #endif
  814. ]], [[]])],
  815. [ : ],
  816. [ AC_MSG_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.]) ])
  817. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  818. #include <openssl/opensslv.h>
  819. #include <openssl/evp.h>
  820. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  821. #error "no ECC"
  822. #endif
  823. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  824. #error "curves unavailable"
  825. #endif
  826. ]], [[]])],
  827. [ : ],
  828. [ AC_MSG_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.]) ])
  829. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  830. [#include <openssl/ssl.h>
  831. ])
  832. AC_CHECK_FUNCS([ \
  833. ERR_load_KDF_strings \
  834. SSL_SESSION_get_master_key \
  835. SSL_get_server_random \
  836. SSL_get_client_ciphers \
  837. SSL_get_client_random \
  838. SSL_CTX_set1_groups_list \
  839. SSL_CIPHER_find \
  840. SSL_CTX_set_security_level \
  841. TLS_method
  842. ])
  843. dnl Check if OpenSSL has scrypt implementation.
  844. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  845. dnl Check if OpenSSL structures are opaque
  846. AC_CHECK_MEMBERS([SSL.state], , ,
  847. [#include <openssl/ssl.h>
  848. ])
  849. AC_CHECK_SIZEOF(SHA_CTX, , [AC_INCLUDES_DEFAULT()
  850. #include <openssl/sha.h>
  851. ])
  852. fi # enable_nss
  853. dnl ======================================================================
  854. dnl Can we use KIST?
  855. dnl Define the set of checks for KIST scheduler support.
  856. AC_DEFUN([CHECK_KIST_SUPPORT],[
  857. dnl KIST needs struct tcp_info and for certain members to exist.
  858. AC_CHECK_MEMBERS(
  859. [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss],
  860. , ,[[#include <netinet/tcp.h>]])
  861. dnl KIST needs SIOCOUTQNSD to exist for an ioctl call.
  862. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  863. #include <linux/sockios.h>
  864. #ifndef SIOCOUTQNSD
  865. #error
  866. #endif
  867. ])], have_siocoutqnsd=yes, have_siocoutqnsd=no)
  868. if test "x$have_siocoutqnsd" = "xyes"; then
  869. if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then
  870. if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then
  871. have_kist_support=yes
  872. fi
  873. fi
  874. fi
  875. ])
  876. dnl Now, trigger the check.
  877. CHECK_KIST_SUPPORT
  878. AS_IF([test "x$have_kist_support" = "xyes"],
  879. [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported
  880. on this system])],
  881. [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])])
  882. LIBS="$save_LIBS"
  883. LDFLAGS="$save_LDFLAGS"
  884. CPPFLAGS="$save_CPPFLAGS"
  885. dnl ------------------------------------------------------
  886. dnl Where do you live, zlib? And how do we call you?
  887. tor_zlib_pkg_redhat="zlib"
  888. tor_zlib_pkg_debian="zlib1g"
  889. tor_zlib_devpkg_redhat="zlib-devel"
  890. tor_zlib_devpkg_debian="zlib1g-dev"
  891. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  892. [#include <zlib.h>],
  893. [const char * zlibVersion(void);],
  894. [zlibVersion();], [--with-zlib-dir],
  895. [/opt/zlib])
  896. if test "$enable_static_zlib" = "yes"; then
  897. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  898. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  899. using --enable-static-zlib")
  900. else
  901. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  902. fi
  903. else
  904. TOR_ZLIB_LIBS="-lz"
  905. fi
  906. AC_SUBST(TOR_ZLIB_LIBS)
  907. dnl ------------------------------------------------------
  908. dnl Where we do we find lzma?
  909. AC_ARG_ENABLE(lzma,
  910. AS_HELP_STRING(--enable-lzma, [enable support for the LZMA compression scheme.]),
  911. [case "${enableval}" in
  912. "yes") lzma=true ;;
  913. "no") lzma=false ;;
  914. * ) AC_MSG_ERROR(bad value for --enable-lzma) ;;
  915. esac], [lzma=auto])
  916. if test "x$enable_lzma" = "xno"; then
  917. have_lzma=no;
  918. else
  919. PKG_CHECK_MODULES([LZMA],
  920. [liblzma],
  921. have_lzma=yes,
  922. have_lzma=no)
  923. if test "x$have_lzma" = "xno" ; then
  924. AC_MSG_WARN([Unable to find liblzma.])
  925. fi
  926. fi
  927. if test "x$have_lzma" = "xyes"; then
  928. AC_DEFINE(HAVE_LZMA,1,[Have LZMA])
  929. TOR_LZMA_CFLAGS="${LZMA_CFLAGS}"
  930. TOR_LZMA_LIBS="${LZMA_LIBS}"
  931. fi
  932. AC_SUBST(TOR_LZMA_CFLAGS)
  933. AC_SUBST(TOR_LZMA_LIBS)
  934. dnl ------------------------------------------------------
  935. dnl Where we do we find zstd?
  936. AC_ARG_ENABLE(zstd,
  937. AS_HELP_STRING(--enable-zstd, [enable support for the Zstandard compression scheme.]),
  938. [case "${enableval}" in
  939. "yes") zstd=true ;;
  940. "no") zstd=false ;;
  941. * ) AC_MSG_ERROR(bad value for --enable-zstd) ;;
  942. esac], [zstd=auto])
  943. if test "x$enable_zstd" = "xno"; then
  944. have_zstd=no;
  945. else
  946. PKG_CHECK_MODULES([ZSTD],
  947. [libzstd >= 1.1],
  948. have_zstd=yes,
  949. have_zstd=no)
  950. if test "x$have_zstd" = "xno" ; then
  951. AC_MSG_WARN([Unable to find libzstd.])
  952. fi
  953. fi
  954. if test "x$have_zstd" = "xyes"; then
  955. AC_DEFINE(HAVE_ZSTD,1,[Have Zstd])
  956. TOR_ZSTD_CFLAGS="${ZSTD_CFLAGS}"
  957. TOR_ZSTD_LIBS="${ZSTD_LIBS}"
  958. dnl now check for zstd functions
  959. save_LIBS="$LIBS"
  960. save_CFLAGS="$CFLAGS"
  961. LIBS="$LIBS $ZSTD_LIBS"
  962. CFLAGS="$CFLAGS $ZSTD_CFLAGS"
  963. AC_CHECK_FUNCS(ZSTD_estimateCStreamSize \
  964. ZSTD_estimateDCtxSize)
  965. LIBS="$save_LIBS"
  966. CFLAGS="$save_CFLAGS"
  967. fi
  968. AC_SUBST(TOR_ZSTD_CFLAGS)
  969. AC_SUBST(TOR_ZSTD_LIBS)
  970. dnl ----------------------------------------------------------------------
  971. dnl Check if libcap is available for capabilities.
  972. tor_cap_pkg_debian="libcap2"
  973. tor_cap_pkg_redhat="libcap"
  974. tor_cap_devpkg_debian="libcap-dev"
  975. tor_cap_devpkg_redhat="libcap-devel"
  976. AC_CHECK_LIB([cap], [cap_init], [],
  977. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  978. )
  979. AC_CHECK_FUNCS(cap_set_proc)
  980. dnl ---------------------------------------------------------------------
  981. dnl Now that we know about our major libraries, we can check for compiler
  982. dnl and linker hardening options. We need to do this with the libraries known,
  983. dnl since sometimes the linker will like an option but not be willing to
  984. dnl use it with a build of a library.
  985. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  986. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_LIB_USERENV $TOR_CAP_LIBS"
  987. CFLAGS_FTRAPV=
  988. CFLAGS_FWRAPV=
  989. CFLAGS_ASAN=
  990. CFLAGS_UBSAN=
  991. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  992. #if !defined(__clang__)
  993. #error
  994. #endif])], have_clang=yes, have_clang=no)
  995. if test "x$enable_pic" = "xyes"; then
  996. TOR_CHECK_CFLAGS(-fPIC)
  997. fi
  998. if test "x$enable_gcc_hardening" != "xno"; then
  999. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  1000. if test "x$have_clang" = "xyes"; then
  1001. TOR_CHECK_CFLAGS(-Qunused-arguments)
  1002. fi
  1003. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  1004. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  1005. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  1006. m4_ifdef([AS_VAR_IF],[
  1007. AS_VAR_IF(can_compile, [yes],
  1008. AS_VAR_IF(can_link, [yes],
  1009. [],
  1010. AC_MSG_ERROR([We tried to build with stack protection; it looks like your compiler supports it but your libc does not provide it. Are you missing libssp? (You can --disable-gcc-hardening to ignore this error.)]))
  1011. )])
  1012. AS_VAR_POPDEF([can_link])
  1013. AS_VAR_POPDEF([can_compile])
  1014. TOR_CHECK_CFLAGS(-Wstack-protector)
  1015. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  1016. if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
  1017. if test "$enable_pic" != "yes"; then
  1018. # If we have already enabled -fPIC, then we don't also need to
  1019. # compile with -fPIE...
  1020. TOR_CHECK_CFLAGS(-fPIE)
  1021. fi
  1022. # ... but we want to link our executables with -pie in any case, since
  1023. # they're executables, not a library.
  1024. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  1025. fi
  1026. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  1027. fi
  1028. if test "$fragile_hardening" = "yes"; then
  1029. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  1030. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  1031. 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.])
  1032. fi
  1033. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  1034. AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
  1035. fi
  1036. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  1037. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  1038. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.*, and with Clang you need libclang_rt.ubsan*])
  1039. fi
  1040. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  1041. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  1042. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
  1043. fi
  1044. TOR_TRY_COMPILE_WITH_CFLAGS([-fno-sanitize=float-divide-by-zero], also_link, CFLAGS_UBSAN="-fno-sanitize=float-divide-by-zero", true)
  1045. if test "$tor_cv_cflags__fno_sanitize_float_divide_by_zero" = "yes" && test "$tor_can_link__fno_sanitize_float_divide_by_zero" != "yes"; then
  1046. AC_MSG_ERROR([The compiler supports -fno-sanitize=float-divide-by-zero, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
  1047. fi
  1048. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  1049. fi
  1050. dnl Find the correct libraries to add in order to use the sanitizers.
  1051. dnl
  1052. dnl When building Rust, Cargo will run the linker with the -nodefaultlibs
  1053. dnl option, which will prevent the compiler from linking the sanitizer
  1054. dnl libraries it needs. We need to specify them manually.
  1055. dnl
  1056. dnl What's more, we need to specify them in a linker script rather than
  1057. dnl from build.rs: these options aren't allowed in the cargo:rustc-flags
  1058. dnl variable.
  1059. RUST_LINKER_OPTIONS=""
  1060. if test "x$have_clang" = "xyes"; then
  1061. if test "x$CFLAGS_ASAN" != "x"; then
  1062. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -Clink-arg=$CFLAGS_ASAN -Cdefault-linker-libraries"
  1063. fi
  1064. if test "x$CFLAGS_UBSAN" != "x"; then
  1065. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -Clink-arg=$CFLAGS_UBSAN -Cdefault-linker-libraries"
  1066. fi
  1067. else
  1068. if test "x$CFLAGS_ASAN" != "x"; then
  1069. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -Clink-arg=-fsanitize=address -Cdefault-linker-libraries"
  1070. fi
  1071. if test "x$CFLAGS_UBSAN" != "x"; then
  1072. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -Clink-arg=-fsanitize=undefined -Cdefault-linker-libraries"
  1073. fi
  1074. fi
  1075. AC_SUBST(RUST_LINKER_OPTIONS)
  1076. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  1077. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  1078. mulodi_fixes_ftrapv=no
  1079. if test "$have_clang" = "yes"; then
  1080. saved_CFLAGS="$CFLAGS"
  1081. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  1082. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  1083. AC_LINK_IFELSE([
  1084. AC_LANG_SOURCE([[
  1085. #include <stdint.h>
  1086. #include <stdlib.h>
  1087. int main(int argc, char **argv)
  1088. {
  1089. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1090. * (int64_t)atoi(argv[3]);
  1091. return x == 9;
  1092. } ]])],
  1093. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  1094. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  1095. if test "$ftrapv_can_link" = "no"; then
  1096. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  1097. AC_LINK_IFELSE([
  1098. AC_LANG_SOURCE([[
  1099. #include <stdint.h>
  1100. #include <stdlib.h>
  1101. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  1102. *overflow=0;
  1103. return a;
  1104. }
  1105. int main(int argc, char **argv)
  1106. {
  1107. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1108. * (int64_t)atoi(argv[3]);
  1109. return x == 9;
  1110. } ]])],
  1111. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  1112. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  1113. fi
  1114. CFLAGS="$saved_CFLAGS"
  1115. fi
  1116. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  1117. dnl These cflags add bunches of branches, and we haven't been able to
  1118. dnl persuade ourselves that they're suitable for code that needs to be
  1119. dnl constant time.
  1120. AC_SUBST(CFLAGS_BUGTRAP)
  1121. dnl These cflags are variant ones sutable for code that needs to be
  1122. dnl constant-time.
  1123. AC_SUBST(CFLAGS_CONSTTIME)
  1124. if test "x$enable_linker_hardening" != "xno"; then
  1125. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  1126. fi
  1127. # For backtrace support
  1128. TOR_CHECK_LDFLAGS(-rdynamic)
  1129. dnl ------------------------------------------------------
  1130. dnl Now see if we have a -fomit-frame-pointer compiler option.
  1131. saved_CFLAGS="$CFLAGS"
  1132. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  1133. F_OMIT_FRAME_POINTER=''
  1134. if test "$saved_CFLAGS" != "$CFLAGS"; then
  1135. if test "$fragile_hardening" = "yes"; then
  1136. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  1137. fi
  1138. fi
  1139. CFLAGS="$saved_CFLAGS"
  1140. AC_SUBST(F_OMIT_FRAME_POINTER)
  1141. dnl ------------------------------------------------------
  1142. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  1143. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  1144. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  1145. dnl code will work.
  1146. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  1147. dnl ============================================================
  1148. dnl Check for libseccomp
  1149. if test "x$enable_seccomp" != "xno"; then
  1150. AC_CHECK_HEADERS([seccomp.h])
  1151. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  1152. fi
  1153. dnl ============================================================
  1154. dnl Check for libscrypt
  1155. if test "x$enable_libscrypt" != "xno"; then
  1156. AC_CHECK_HEADERS([libscrypt.h])
  1157. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  1158. AC_CHECK_FUNCS([libscrypt_scrypt])
  1159. fi
  1160. dnl ============================================================
  1161. dnl We need an implementation of curve25519.
  1162. dnl set these defaults.
  1163. build_curve25519_donna=no
  1164. build_curve25519_donna_c64=no
  1165. use_curve25519_donna=no
  1166. use_curve25519_nacl=no
  1167. CURVE25519_LIBS=
  1168. dnl The best choice is using curve25519-donna-c64, but that requires
  1169. dnl that we
  1170. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  1171. tor_cv_can_use_curve25519_donna_c64,
  1172. [AC_RUN_IFELSE(
  1173. [AC_LANG_PROGRAM([dnl
  1174. #include <stdint.h>
  1175. typedef unsigned uint128_t __attribute__((mode(TI)));
  1176. int func(uint64_t a, uint64_t b) {
  1177. uint128_t c = ((uint128_t)a) * b;
  1178. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1179. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1180. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1181. (((uint64_t)(c))&0xffffffffL) == 0;
  1182. return ok;
  1183. }
  1184. ], [dnl
  1185. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1186. ((uint64_t)1234567890) << 24);
  1187. return !ok;
  1188. ])],
  1189. [tor_cv_can_use_curve25519_donna_c64=yes],
  1190. [tor_cv_can_use_curve25519_donna_c64=no],
  1191. [AC_LINK_IFELSE(
  1192. [AC_LANG_PROGRAM([dnl
  1193. #include <stdint.h>
  1194. typedef unsigned uint128_t __attribute__((mode(TI)));
  1195. int func(uint64_t a, uint64_t b) {
  1196. uint128_t c = ((uint128_t)a) * b;
  1197. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1198. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1199. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1200. (((uint64_t)(c))&0xffffffffL) == 0;
  1201. return ok;
  1202. }
  1203. ], [dnl
  1204. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1205. ((uint64_t)1234567890) << 24);
  1206. return !ok;
  1207. ])],
  1208. [tor_cv_can_use_curve25519_donna_c64=cross],
  1209. [tor_cv_can_use_curve25519_donna_c64=no])])])
  1210. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  1211. nacl/crypto_scalarmult_curve25519.h])
  1212. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  1213. tor_cv_can_use_curve25519_nacl,
  1214. [tor_saved_LIBS="$LIBS"
  1215. LIBS="$LIBS -lnacl"
  1216. AC_LINK_IFELSE(
  1217. [AC_LANG_PROGRAM([dnl
  1218. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  1219. #include <crypto_scalarmult_curve25519.h>
  1220. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  1221. #include <nacl/crypto_scalarmult_curve25519.h>
  1222. #endif
  1223. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  1224. #error Hey, this is the reference implementation! That's not fast.
  1225. #endif
  1226. ], [
  1227. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  1228. ])], [tor_cv_can_use_curve25519_nacl=yes],
  1229. [tor_cv_can_use_curve25519_nacl=no])
  1230. LIBS="$tor_saved_LIBS" ])
  1231. dnl Okay, now we need to figure out which one to actually use. Fall back
  1232. dnl to curve25519-donna.c
  1233. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  1234. build_curve25519_donna_c64=yes
  1235. use_curve25519_donna=yes
  1236. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  1237. use_curve25519_nacl=yes
  1238. CURVE25519_LIBS=-lnacl
  1239. else
  1240. build_curve25519_donna=yes
  1241. use_curve25519_donna=yes
  1242. fi
  1243. if test "x$use_curve25519_donna" = "xyes"; then
  1244. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  1245. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  1246. fi
  1247. if test "x$use_curve25519_nacl" = "xyes"; then
  1248. AC_DEFINE(USE_CURVE25519_NACL, 1,
  1249. [Defined if we should use a curve25519 from nacl])
  1250. fi
  1251. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  1252. test "x$build_curve25519_donna" = "xyes")
  1253. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  1254. test "x$build_curve25519_donna_c64" = "xyes")
  1255. AC_SUBST(CURVE25519_LIBS)
  1256. dnl Make sure to enable support for large off_t if available.
  1257. AC_SYS_LARGEFILE
  1258. AC_CHECK_HEADERS([errno.h \
  1259. fcntl.h \
  1260. signal.h \
  1261. string.h \
  1262. sys/capability.h \
  1263. sys/fcntl.h \
  1264. sys/stat.h \
  1265. sys/time.h \
  1266. sys/types.h \
  1267. time.h \
  1268. unistd.h \
  1269. arpa/inet.h \
  1270. crt_externs.h \
  1271. execinfo.h \
  1272. gnu/libc-version.h \
  1273. grp.h \
  1274. ifaddrs.h \
  1275. inttypes.h \
  1276. limits.h \
  1277. linux/types.h \
  1278. mach/vm_inherit.h \
  1279. machine/limits.h \
  1280. malloc.h \
  1281. malloc/malloc.h \
  1282. malloc_np.h \
  1283. netdb.h \
  1284. netinet/in.h \
  1285. netinet/in6.h \
  1286. pwd.h \
  1287. readpassphrase.h \
  1288. stdatomic.h \
  1289. sys/eventfd.h \
  1290. sys/file.h \
  1291. sys/ioctl.h \
  1292. sys/limits.h \
  1293. sys/mman.h \
  1294. sys/param.h \
  1295. sys/prctl.h \
  1296. sys/random.h \
  1297. sys/resource.h \
  1298. sys/select.h \
  1299. sys/socket.h \
  1300. sys/statvfs.h \
  1301. sys/syscall.h \
  1302. sys/sysctl.h \
  1303. sys/syslimits.h \
  1304. sys/time.h \
  1305. sys/types.h \
  1306. sys/un.h \
  1307. sys/utime.h \
  1308. sys/wait.h \
  1309. syslog.h \
  1310. utime.h])
  1311. AC_CHECK_HEADERS(sys/param.h)
  1312. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  1313. [#ifdef HAVE_SYS_TYPES_H
  1314. #include <sys/types.h>
  1315. #endif
  1316. #ifdef HAVE_SYS_SOCKET_H
  1317. #include <sys/socket.h>
  1318. #endif])
  1319. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  1320. [#ifdef HAVE_SYS_TYPES_H
  1321. #include <sys/types.h>
  1322. #endif
  1323. #ifdef HAVE_SYS_SOCKET_H
  1324. #include <sys/socket.h>
  1325. #endif
  1326. #ifdef HAVE_NET_IF_H
  1327. #include <net/if.h>
  1328. #endif
  1329. #ifdef HAVE_NETINET_IN_H
  1330. #include <netinet/in.h>
  1331. #endif])
  1332. AC_CHECK_HEADERS(linux/if.h,[],[],
  1333. [
  1334. #ifdef HAVE_SYS_SOCKET_H
  1335. #include <sys/socket.h>
  1336. #endif
  1337. ])
  1338. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  1339. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  1340. [#ifdef HAVE_SYS_TYPES_H
  1341. #include <sys/types.h>
  1342. #endif
  1343. #ifdef HAVE_SYS_SOCKET_H
  1344. #include <sys/socket.h>
  1345. #endif
  1346. #ifdef HAVE_LIMITS_H
  1347. #include <limits.h>
  1348. #endif
  1349. #ifdef HAVE_LINUX_TYPES_H
  1350. #include <linux/types.h>
  1351. #endif
  1352. #ifdef HAVE_NETINET_IN6_H
  1353. #include <netinet/in6.h>
  1354. #endif
  1355. #ifdef HAVE_NETINET_IN_H
  1356. #include <netinet/in.h>
  1357. #endif])
  1358. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  1359. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  1360. [#ifdef HAVE_SYS_TYPES_H
  1361. #include <sys/types.h>
  1362. #endif
  1363. #ifdef HAVE_SYS_SOCKET_H
  1364. #include <sys/socket.h>
  1365. #endif
  1366. #ifdef HAVE_LIMITS_H
  1367. #include <limits.h>
  1368. #endif
  1369. #ifdef HAVE_LINUX_TYPES_H
  1370. #include <linux/types.h>
  1371. #endif
  1372. #ifdef HAVE_NETINET_IN6_H
  1373. #include <netinet/in6.h>
  1374. #endif
  1375. #ifdef HAVE_NETINET_IN_H
  1376. #include <netinet/in.h>
  1377. #endif
  1378. #ifdef HAVE_LINUX_IF_H
  1379. #include <linux/if.h>
  1380. #endif])
  1381. transparent_ok=0
  1382. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  1383. transparent_ok=1
  1384. fi
  1385. if test "x$linux_netfilter_ipv4" = "x1"; then
  1386. transparent_ok=1
  1387. fi
  1388. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  1389. transparent_ok=1
  1390. fi
  1391. if test "x$transparent_ok" = "x1"; then
  1392. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  1393. else
  1394. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  1395. fi
  1396. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1397. [#ifdef HAVE_SYS_TYPES_H
  1398. #include <sys/types.h>
  1399. #endif
  1400. #ifdef HAVE_SYS_TIME_H
  1401. #include <sys/time.h>
  1402. #endif])
  1403. AC_CHECK_SIZEOF(char)
  1404. AC_CHECK_SIZEOF(short)
  1405. AC_CHECK_SIZEOF(int)
  1406. AC_CHECK_SIZEOF(long)
  1407. AC_CHECK_SIZEOF(long long)
  1408. AC_CHECK_SIZEOF(__int64)
  1409. AC_CHECK_SIZEOF(void *)
  1410. AC_CHECK_SIZEOF(time_t)
  1411. AC_CHECK_SIZEOF(size_t)
  1412. AC_CHECK_SIZEOF(pid_t)
  1413. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1414. AC_PC_FROM_UCONTEXT([:])
  1415. dnl used to include sockaddr_storage, but everybody has that.
  1416. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1417. [#ifdef HAVE_SYS_TYPES_H
  1418. #include <sys/types.h>
  1419. #endif
  1420. #ifdef HAVE_NETINET_IN_H
  1421. #include <netinet/in.h>
  1422. #endif
  1423. #ifdef HAVE_NETINET_IN6_H
  1424. #include <netinet/in6.h>
  1425. #endif
  1426. #ifdef HAVE_SYS_SOCKET_H
  1427. #include <sys/socket.h>
  1428. #endif
  1429. #ifdef _WIN32
  1430. #define _WIN32_WINNT 0x0501
  1431. #define WIN32_LEAN_AND_MEAN
  1432. #include <winsock2.h>
  1433. #include <ws2tcpip.h>
  1434. #endif
  1435. ])
  1436. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1437. [#ifdef HAVE_SYS_TYPES_H
  1438. #include <sys/types.h>
  1439. #endif
  1440. #ifdef HAVE_NETINET_IN_H
  1441. #include <netinet/in.h>
  1442. #endif
  1443. #ifdef HAVE_NETINET_IN6_H
  1444. #include <netinet/in6.h>
  1445. #endif
  1446. #ifdef HAVE_SYS_SOCKET_H
  1447. #include <sys/socket.h>
  1448. #endif
  1449. #ifdef _WIN32
  1450. #define _WIN32_WINNT 0x0501
  1451. #define WIN32_LEAN_AND_MEAN
  1452. #include <winsock2.h>
  1453. #include <ws2tcpip.h>
  1454. #endif
  1455. ])
  1456. AC_CHECK_TYPES([rlim_t], , ,
  1457. [#ifdef HAVE_SYS_TYPES_H
  1458. #include <sys/types.h>
  1459. #endif
  1460. #ifdef HAVE_SYS_TIME_H
  1461. #include <sys/time.h>
  1462. #endif
  1463. #ifdef HAVE_SYS_RESOURCE_H
  1464. #include <sys/resource.h>
  1465. #endif
  1466. ])
  1467. AX_CHECK_SIGN([time_t],
  1468. [ : ],
  1469. [ : ], [
  1470. #ifdef HAVE_SYS_TYPES_H
  1471. #include <sys/types.h>
  1472. #endif
  1473. #ifdef HAVE_SYS_TIME_H
  1474. #include <sys/time.h>
  1475. #endif
  1476. #ifdef HAVE_TIME_H
  1477. #include <time.h>
  1478. #endif
  1479. ])
  1480. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1481. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1482. fi
  1483. AX_CHECK_SIGN([size_t],
  1484. [ tor_cv_size_t_signed=yes ],
  1485. [ tor_cv_size_t_signed=no ], [
  1486. #ifdef HAVE_SYS_TYPES_H
  1487. #include <sys/types.h>
  1488. #endif
  1489. ])
  1490. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1491. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1492. fi
  1493. AX_CHECK_SIGN([enum always],
  1494. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1495. [ : ], [
  1496. enum always { AAA, BBB, CCC };
  1497. ])
  1498. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1499. #ifdef HAVE_SYS_SOCKET_H
  1500. #include <sys/socket.h>
  1501. #endif
  1502. ])
  1503. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1504. AC_CHECK_SIZEOF(cell_t)
  1505. # Let's see if stdatomic works. (There are some debian clangs that screw it
  1506. # up; see Tor bug #26779 and debian bug 903709.)
  1507. AC_CACHE_CHECK([whether C11 stdatomic.h actually works],
  1508. tor_cv_stdatomic_works,
  1509. [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1510. #include <stdatomic.h>
  1511. struct x { atomic_size_t y; };
  1512. void try_atomic_init(struct x *xx)
  1513. {
  1514. atomic_init(&xx->y, 99);
  1515. atomic_fetch_add(&xx->y, 1);
  1516. }
  1517. ]])], [tor_cv_stdatomic_works=yes], [tor_cv_stdatomic_works=no])])
  1518. if test "$tor_cv_stdatomic_works" = "yes"; then
  1519. AC_DEFINE(STDATOMIC_WORKS, 1, [Set to 1 if we can compile a simple stdatomic example.])
  1520. elif test "$ac_cv_header_stdatomic_h" = "yes"; then
  1521. AC_MSG_WARN([Your compiler provides the stdatomic.h header, but it doesn't seem to work. I'll pretend it isn't there. If you are using Clang on Debian, maybe this is because of https://bugs.debian.org/903709 ])
  1522. fi
  1523. # Now make sure that NULL can be represented as zero bytes.
  1524. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1525. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1526. [[#include <stdlib.h>
  1527. #include <string.h>
  1528. #include <stdio.h>
  1529. #ifdef HAVE_STDDEF_H
  1530. #include <stddef.h>
  1531. #endif
  1532. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1533. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1534. [tor_cv_null_is_zero=yes],
  1535. [tor_cv_null_is_zero=no],
  1536. [tor_cv_null_is_zero=cross])])
  1537. if test "$tor_cv_null_is_zero" = "cross"; then
  1538. # Cross-compiling; let's hope that the target isn't raving mad.
  1539. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1540. fi
  1541. if test "$tor_cv_null_is_zero" != "no"; then
  1542. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1543. [Define to 1 iff memset(0) sets pointers to NULL])
  1544. fi
  1545. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1546. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1547. [[#include <stdlib.h>
  1548. #include <string.h>
  1549. #include <stdio.h>
  1550. #ifdef HAVE_STDDEF_H
  1551. #include <stddef.h>
  1552. #endif
  1553. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1554. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1555. [tor_cv_dbl0_is_zero=yes],
  1556. [tor_cv_dbl0_is_zero=no],
  1557. [tor_cv_dbl0_is_zero=cross])])
  1558. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1559. # Cross-compiling; let's hope that the target isn't raving mad.
  1560. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1561. fi
  1562. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1563. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1564. [Define to 1 iff memset(0) sets doubles to 0.0])
  1565. fi
  1566. # And what happens when we malloc zero?
  1567. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1568. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1569. [[#include <stdlib.h>
  1570. #include <string.h>
  1571. #include <stdio.h>
  1572. #ifdef HAVE_STDDEF_H
  1573. #include <stddef.h>
  1574. #endif
  1575. int main () { return malloc(0)?0:1; }]])],
  1576. [tor_cv_malloc_zero_works=yes],
  1577. [tor_cv_malloc_zero_works=no],
  1578. [tor_cv_malloc_zero_works=cross])])
  1579. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1580. # Cross-compiling; let's hope that the target isn't raving mad.
  1581. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1582. fi
  1583. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1584. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1585. [Define to 1 iff malloc(0) returns a pointer])
  1586. fi
  1587. # whether we seem to be in a 2s-complement world.
  1588. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1589. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1590. [[int main () { int problem = ((-99) != (~99)+1);
  1591. return problem ? 1 : 0; }]])],
  1592. [tor_cv_twos_complement=yes],
  1593. [tor_cv_twos_complement=no],
  1594. [tor_cv_twos_complement=cross])])
  1595. if test "$tor_cv_twos_complement" = "cross"; then
  1596. # Cross-compiling; let's hope that the target isn't raving mad.
  1597. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1598. fi
  1599. if test "$tor_cv_twos_complement" != "no"; then
  1600. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1601. [Define to 1 iff we represent negative integers with
  1602. two's complement])
  1603. fi
  1604. # What does shifting a negative value do?
  1605. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1606. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1607. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1608. [tor_cv_sign_extend=yes],
  1609. [tor_cv_sign_extend=no],
  1610. [tor_cv_sign_extend=cross])])
  1611. if test "$tor_cv_sign_extend" = "cross"; then
  1612. # Cross-compiling; let's hope that the target isn't raving mad.
  1613. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1614. fi
  1615. if test "$tor_cv_sign_extend" != "no"; then
  1616. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1617. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1618. fi
  1619. # Is uint8_t the same type as unsigned char?
  1620. AC_CACHE_CHECK([whether uint8_t is the same type as unsigned char], tor_cv_uint8_uchar,
  1621. [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1622. #include <stdint.h>
  1623. extern uint8_t c;
  1624. unsigned char c;]])],
  1625. [tor_cv_uint8_uchar=yes],
  1626. [tor_cv_uint8_uchar=no],
  1627. [tor_cv_uint8_uchar=cross])])
  1628. if test "$tor_cv_uint8_uchar" = "cross"; then
  1629. AC_MSG_NOTICE([Cross-compiling: we'll assume that uint8_t is the same type as unsigned char])
  1630. fi
  1631. if test "$tor_cv_uint8_uchar" = "no"; then
  1632. AC_MSG_ERROR([We assume that uint8_t is the same type as unsigned char, but your compiler disagrees.])
  1633. fi
  1634. AC_ARG_WITH(tcmalloc,
  1635. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library. Deprecated; see --with-malloc]),
  1636. [ tcmalloc=yes ], [ tcmalloc=no ])
  1637. default_malloc=system
  1638. if test "x$enable_openbsd_malloc" = "xyes" ; then
  1639. AC_MSG_NOTICE([The --enable-openbsd-malloc argument is deprecated; use --with-malloc=openbsd instead.])
  1640. default_malloc=openbsd
  1641. fi
  1642. if test "x$tcmalloc" = "xyes"; then
  1643. AC_MSG_NOTICE([The --with-tcmalloc argument is deprecated; use --with-malloc=tcmalloc instead.])
  1644. default_malloc=tcmalloc
  1645. fi
  1646. AC_ARG_WITH(malloc,
  1647. AS_HELP_STRING([--with-malloc=[system,jemalloc,tcmalloc,openbsd]],
  1648. [select special malloc implementation [system]]),
  1649. [ malloc="$with_malloc" ], [ malloc="$default_malloc" ])
  1650. AS_CASE([$malloc],
  1651. [tcmalloc], [
  1652. PKG_CHECK_MODULES([TCMALLOC],
  1653. [libtcmalloc],
  1654. have_tcmalloc=yes,
  1655. have_tcmalloc=no)
  1656. if test "x$have_tcmalloc" = "xno" ; then
  1657. AC_MSG_ERROR([Unable to find tcmalloc requested by --with-malloc.])
  1658. fi
  1659. CFLAGS="$CFLAGS $TCMALLOC_CFLAGS"
  1660. LIBS="$TCMALLOC_LIBS $LIBS"
  1661. ],
  1662. [jemalloc], [
  1663. PKG_CHECK_MODULES([JEMALLOC],
  1664. [jemalloc],
  1665. have_jemalloc=yes,
  1666. have_jemalloc=no)
  1667. if test "x$have_tcmalloc" = "xno" ; then
  1668. AC_MSG_ERROR([Unable to find jemalloc requested by --with-malloc.])
  1669. fi
  1670. CFLAGS="$CFLAGS $JEMALLOC_CFLAGS"
  1671. LIBS="$JEMALLOC_LIBS $LIBS"
  1672. using_custom_malloc=yes
  1673. ],
  1674. [openbsd], [
  1675. AC_MSG_WARN([The openbsd malloc port is deprecated in Tor 0.3.5 and will be removed in a future version.])
  1676. enable_openbsd_malloc=yes
  1677. ],
  1678. [system], [
  1679. # handle this later, including the jemalloc fallback
  1680. AC_CHECK_FUNCS(mallinfo)
  1681. ],
  1682. [AC_MSG_ERROR([--with-malloc=`$with_malloc' not supported, see --help])
  1683. ])
  1684. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test "x$enable_openbsd_malloc" = "xyes")
  1685. if test "$malloc" != "system"; then
  1686. # Tell the C compiler not to use the system allocator functions.
  1687. TOR_CHECK_CFLAGS([-fno-builtin-malloc -fno-builtin-realloc -fno-builtin-calloc -fno-builtin-free])
  1688. fi
  1689. if test "$using_custom_malloc" = "yes"; then
  1690. # Tell the C compiler not to use the system allocator functions.
  1691. TOR_CHECK_CFLAGS([-fno-builtin-malloc -fno-builtin-realloc -fno-builtin-calloc -fno-builtin-free])
  1692. fi
  1693. # By default, we're going to assume we don't have mlockall()
  1694. # bionic and other platforms have various broken mlockall subsystems.
  1695. # Some systems don't have a working mlockall, some aren't linkable,
  1696. # and some have it but don't declare it.
  1697. AC_CHECK_FUNCS(mlockall)
  1698. AC_CHECK_DECLS([mlockall], , , [
  1699. #ifdef HAVE_SYS_MMAN_H
  1700. #include <sys/mman.h>
  1701. #endif])
  1702. # Allow user to specify an alternate syslog facility
  1703. AC_ARG_WITH(syslog-facility,
  1704. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1705. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1706. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1707. AC_SUBST(LOGFACILITY)
  1708. # Check if we have getresuid and getresgid
  1709. AC_CHECK_FUNCS(getresuid getresgid)
  1710. # Check for gethostbyname_r in all its glorious incompatible versions.
  1711. # (This logic is based on that in Python's configure.in)
  1712. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1713. [Define this if you have any gethostbyname_r()])
  1714. AC_CHECK_FUNC(gethostbyname_r, [
  1715. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1716. OLD_CFLAGS=$CFLAGS
  1717. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1718. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1719. #include <netdb.h>
  1720. ]], [[
  1721. char *cp1, *cp2;
  1722. struct hostent *h1, *h2;
  1723. int i1, i2;
  1724. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1725. ]])],[
  1726. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1727. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1728. [Define this if gethostbyname_r takes 6 arguments])
  1729. AC_MSG_RESULT(6)
  1730. ], [
  1731. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1732. #include <netdb.h>
  1733. ]], [[
  1734. char *cp1, *cp2;
  1735. struct hostent *h1;
  1736. int i1, i2;
  1737. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1738. ]])], [
  1739. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1740. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1741. [Define this if gethostbyname_r takes 5 arguments])
  1742. AC_MSG_RESULT(5)
  1743. ], [
  1744. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1745. #include <netdb.h>
  1746. ]], [[
  1747. char *cp1;
  1748. struct hostent *h1;
  1749. struct hostent_data hd;
  1750. (void) gethostbyname_r(cp1,h1,&hd);
  1751. ]])], [
  1752. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1753. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1754. [Define this if gethostbyname_r takes 3 arguments])
  1755. AC_MSG_RESULT(3)
  1756. ], [
  1757. AC_MSG_RESULT(0)
  1758. ])
  1759. ])
  1760. ])
  1761. CFLAGS=$OLD_CFLAGS
  1762. ])
  1763. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1764. tor_cv_have_func_macro,
  1765. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1766. #include <stdio.h>
  1767. int main(int c, char **v) { puts(__func__); }])],
  1768. tor_cv_have_func_macro=yes,
  1769. tor_cv_have_func_macro=no))
  1770. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1771. tor_cv_have_FUNC_macro,
  1772. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1773. #include <stdio.h>
  1774. int main(int c, char **v) { puts(__FUNC__); }])],
  1775. tor_cv_have_FUNC_macro=yes,
  1776. tor_cv_have_FUNC_macro=no))
  1777. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1778. tor_cv_have_FUNCTION_macro,
  1779. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1780. #include <stdio.h>
  1781. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1782. tor_cv_have_FUNCTION_macro=yes,
  1783. tor_cv_have_FUNCTION_macro=no))
  1784. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1785. tor_cv_have_environ_declared,
  1786. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1787. #ifdef HAVE_UNISTD_H
  1788. #include <unistd.h>
  1789. #endif
  1790. #include <stdlib.h>
  1791. int main(int c, char **v) { char **t = environ; }])],
  1792. tor_cv_have_environ_declared=yes,
  1793. tor_cv_have_environ_declared=no))
  1794. if test "$tor_cv_have_func_macro" = "yes"; then
  1795. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1796. fi
  1797. if test "$tor_cv_have_FUNC_macro" = "yes"; then
  1798. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1799. fi
  1800. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1801. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1802. [Defined if the compiler supports __FUNCTION__])
  1803. fi
  1804. if test "$tor_cv_have_environ_declared" = "yes"; then
  1805. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1806. [Defined if we have extern char **environ already declared])
  1807. fi
  1808. # $prefix stores the value of the --prefix command line option, or
  1809. # NONE if the option wasn't set. In the case that it wasn't set, make
  1810. # it be the default, so that we can use it to expand directories now.
  1811. if test "x$prefix" = "xNONE"; then
  1812. prefix=$ac_default_prefix
  1813. fi
  1814. # and similarly for $exec_prefix
  1815. if test "x$exec_prefix" = "xNONE"; then
  1816. exec_prefix=$prefix
  1817. fi
  1818. if test "x$BUILDDIR" = "x"; then
  1819. BUILDDIR=`pwd`
  1820. fi
  1821. AC_SUBST(BUILDDIR)
  1822. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1823. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1824. if test "x$SRCDIR" = "x"; then
  1825. SRCDIR=$(cd "$srcdir"; pwd)
  1826. fi
  1827. AH_TEMPLATE([SRCDIR],[tor's sourcedir directory])
  1828. AC_DEFINE_UNQUOTED(SRCDIR,"$SRCDIR")
  1829. if test "x$CONFDIR" = "x"; then
  1830. CONFDIR=`eval echo $sysconfdir/tor`
  1831. fi
  1832. AC_SUBST(CONFDIR)
  1833. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1834. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1835. BINDIR=`eval echo $bindir`
  1836. AC_SUBST(BINDIR)
  1837. LOCALSTATEDIR=`eval echo $localstatedir`
  1838. AC_SUBST(LOCALSTATEDIR)
  1839. if test "$bwin32" = "true"; then
  1840. # Test if the linker supports the --nxcompat and --dynamicbase options
  1841. # for Windows
  1842. save_LDFLAGS="$LDFLAGS"
  1843. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1844. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1845. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1846. [AC_MSG_RESULT([yes])]
  1847. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1848. [AC_MSG_RESULT([no])]
  1849. )
  1850. LDFLAGS="$save_LDFLAGS"
  1851. fi
  1852. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1853. # than autoconf's macros like.
  1854. if test "$GCC" = "yes"; then
  1855. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1856. # accident waiting to happen.
  1857. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1858. else
  1859. # Override optimization level for non-gcc compilers
  1860. CFLAGS="$CFLAGS -O"
  1861. enable_gcc_warnings=no
  1862. enable_gcc_warnings_advisory=no
  1863. fi
  1864. # Warnings implies advisory-warnings and -Werror.
  1865. if test "$enable_gcc_warnings" = "yes"; then
  1866. enable_gcc_warnings_advisory=yes
  1867. enable_fatal_warnings=yes
  1868. fi
  1869. # OS X Lion started deprecating the system openssl. Let's just disable
  1870. # all deprecation warnings on OS X. Also, to potentially make the binary
  1871. # a little smaller, let's enable dead_strip.
  1872. case "$host_os" in
  1873. darwin*)
  1874. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1875. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1876. esac
  1877. TOR_WARNING_FLAGS=""
  1878. # Add some more warnings which we use in development but not in the
  1879. # released versions. (Some relevant gcc versions can't handle these.)
  1880. #
  1881. # Note that we have to do this near the end of the autoconf process, or
  1882. # else we may run into problems when these warnings hit on the testing C
  1883. # programs that autoconf wants to build.
  1884. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1885. case "$host" in
  1886. *-*-openbsd* | *-*-bitrig*)
  1887. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1888. # That's fine, except that the headers don't pass -Wredundant-decls.
  1889. # Therefore, let's disable -Wsystem-headers when we're building
  1890. # with maximal warnings on OpenBSD.
  1891. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1892. esac
  1893. CFLAGS_NOWARNINGS="$CFLAGS"
  1894. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1895. # have it work better.
  1896. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1897. # This warning was added in gcc 4.3, but it appears to generate
  1898. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1899. #CFLAGS="$CFLAGS -Wlogical-op"
  1900. m4_foreach_w([warning_flag], [
  1901. -Waddress
  1902. -Waddress-of-array-temporary
  1903. -Waddress-of-temporary
  1904. -Wambiguous-macro
  1905. -Wanonymous-pack-parens
  1906. -Warc
  1907. -Warc-abi
  1908. -Warc-bridge-casts-disallowed-in-nonarc
  1909. -Warc-maybe-repeated-use-of-weak
  1910. -Warc-performSelector-leaks
  1911. -Warc-repeated-use-of-weak
  1912. -Warray-bounds
  1913. -Warray-bounds-pointer-arithmetic
  1914. -Wasm
  1915. -Wasm-operand-widths
  1916. -Watomic-properties
  1917. -Watomic-property-with-user-defined-accessor
  1918. -Wauto-import
  1919. -Wauto-storage-class
  1920. -Wauto-var-id
  1921. -Wavailability
  1922. -Wbackslash-newline-escape
  1923. -Wbad-array-new-length
  1924. -Wbind-to-temporary-copy
  1925. -Wbitfield-constant-conversion
  1926. -Wbool-conversion
  1927. -Wbool-conversions
  1928. -Wbuiltin-requires-header
  1929. -Wchar-align
  1930. -Wcompare-distinct-pointer-types
  1931. -Wcomplex-component-init
  1932. -Wconditional-type-mismatch
  1933. -Wconfig-macros
  1934. -Wconstant-conversion
  1935. -Wconstant-logical-operand
  1936. -Wconstexpr-not-const
  1937. -Wcustom-atomic-properties
  1938. -Wdangling-field
  1939. -Wdangling-initializer-list
  1940. -Wdate-time
  1941. -Wdelegating-ctor-cycles
  1942. -Wdeprecated-implementations
  1943. -Wdeprecated-register
  1944. -Wdirect-ivar-access
  1945. -Wdiscard-qual
  1946. -Wdistributed-object-modifiers
  1947. -Wdivision-by-zero
  1948. -Wdollar-in-identifier-extension
  1949. -Wdouble-promotion
  1950. -Wduplicate-decl-specifier
  1951. -Wduplicate-enum
  1952. -Wduplicate-method-arg
  1953. -Wduplicate-method-match
  1954. -Wduplicated-cond
  1955. -Wdynamic-class-memaccess
  1956. -Wembedded-directive
  1957. -Wempty-translation-unit
  1958. -Wenum-conversion
  1959. -Wexit-time-destructors
  1960. -Wexplicit-ownership-type
  1961. -Wextern-initializer
  1962. -Wextra
  1963. -Wextra-semi
  1964. -Wextra-tokens
  1965. -Wflexible-array-extensions
  1966. -Wfloat-conversion
  1967. -Wformat-non-iso
  1968. -Wfour-char-constants
  1969. -Wgcc-compat
  1970. -Wglobal-constructors
  1971. -Wgnu-array-member-paren-init
  1972. -Wgnu-designator
  1973. -Wgnu-static-float-init
  1974. -Wheader-guard
  1975. -Wheader-hygiene
  1976. -Widiomatic-parentheses
  1977. -Wignored-attributes
  1978. -Wimplicit-atomic-properties
  1979. -Wimplicit-conversion-floating-point-to-bool
  1980. -Wimplicit-exception-spec-mismatch
  1981. -Wimplicit-fallthrough
  1982. -Wimplicit-fallthrough-per-function
  1983. -Wimplicit-retain-self
  1984. -Wimport-preprocessor-directive-pedantic
  1985. -Wincompatible-library-redeclaration
  1986. -Wincompatible-pointer-types-discards-qualifiers
  1987. -Wincomplete-implementation
  1988. -Wincomplete-module
  1989. -Wincomplete-umbrella
  1990. -Winit-self
  1991. -Wint-conversions
  1992. -Wint-to-void-pointer-cast
  1993. -Winteger-overflow
  1994. -Winvalid-constexpr
  1995. -Winvalid-iboutlet
  1996. -Winvalid-noreturn
  1997. -Winvalid-pp-token
  1998. -Winvalid-source-encoding
  1999. -Winvalid-token-paste
  2000. -Wknr-promoted-parameter
  2001. -Wlarge-by-value-copy
  2002. -Wliteral-conversion
  2003. -Wliteral-range
  2004. -Wlocal-type-template-args
  2005. -Wlogical-op
  2006. -Wloop-analysis
  2007. -Wmain-return-type
  2008. -Wmalformed-warning-check
  2009. -Wmethod-signatures
  2010. -Wmicrosoft
  2011. -Wmicrosoft-exists
  2012. -Wmismatched-parameter-types
  2013. -Wmismatched-return-types
  2014. -Wmissing-field-initializers
  2015. -Wmissing-format-attribute
  2016. -Wmissing-noreturn
  2017. -Wmissing-selector-name
  2018. -Wmissing-sysroot
  2019. -Wmissing-variable-declarations
  2020. -Wmodule-conflict
  2021. -Wnested-anon-types
  2022. -Wnewline-eof
  2023. -Wnon-literal-null-conversion
  2024. -Wnon-pod-varargs
  2025. -Wnonportable-cfstrings
  2026. -Wnormalized=nfkc
  2027. -Wnull-arithmetic
  2028. -Wnull-character
  2029. -Wnull-conversion
  2030. -Wnull-dereference
  2031. -Wout-of-line-declaration
  2032. -Wover-aligned
  2033. -Woverlength-strings
  2034. -Woverride-init
  2035. -Woverriding-method-mismatch
  2036. -Wpointer-type-mismatch
  2037. -Wpredefined-identifier-outside-function
  2038. -Wprotocol-property-synthesis-ambiguity
  2039. -Wreadonly-iboutlet-property
  2040. -Wreadonly-setter-attrs
  2041. -Wreceiver-expr
  2042. -Wreceiver-forward-class
  2043. -Wreceiver-is-weak
  2044. -Wreinterpret-base-class
  2045. -Wrequires-super-attribute
  2046. -Wreserved-user-defined-literal
  2047. -Wreturn-stack-address
  2048. -Wsection
  2049. -Wselector-type-mismatch
  2050. -Wsentinel
  2051. -Wserialized-diagnostics
  2052. -Wshadow
  2053. -Wshift-count-negative
  2054. -Wshift-count-overflow
  2055. -Wshift-negative-value
  2056. -Wshift-overflow=2
  2057. -Wshift-sign-overflow
  2058. -Wshorten-64-to-32
  2059. -Wsizeof-array-argument
  2060. -Wsource-uses-openmp
  2061. -Wstatic-float-init
  2062. -Wstatic-in-inline
  2063. -Wstatic-local-in-inline
  2064. -Wstrict-overflow=1
  2065. -Wstring-compare
  2066. -Wstring-conversion
  2067. -Wstrlcpy-strlcat-size
  2068. -Wstrncat-size
  2069. -Wsuggest-attribute=format
  2070. -Wsuggest-attribute=noreturn
  2071. -Wsuper-class-method-mismatch
  2072. -Wswitch-bool
  2073. -Wsync-nand
  2074. -Wtautological-constant-out-of-range-compare
  2075. -Wtentative-definition-incomplete-type
  2076. -Wtrampolines
  2077. -Wtype-safety
  2078. -Wtypedef-redefinition
  2079. -Wtypename-missing
  2080. -Wundefined-inline
  2081. -Wundefined-internal
  2082. -Wundefined-reinterpret-cast
  2083. -Wunicode
  2084. -Wunicode-whitespace
  2085. -Wunknown-warning-option
  2086. -Wunnamed-type-template-args
  2087. -Wunneeded-member-function
  2088. -Wunsequenced
  2089. -Wunsupported-visibility
  2090. -Wunused-but-set-parameter
  2091. -Wunused-but-set-variable
  2092. -Wunused-command-line-argument
  2093. -Wunused-const-variable=2
  2094. -Wunused-exception-parameter
  2095. -Wunused-local-typedefs
  2096. -Wunused-member-function
  2097. -Wunused-sanitize-argument
  2098. -Wunused-volatile-lvalue
  2099. -Wuser-defined-literals
  2100. -Wvariadic-macros
  2101. -Wvector-conversion
  2102. -Wvector-conversions
  2103. -Wvexing-parse
  2104. -Wvisibility
  2105. -Wvla-extension
  2106. -Wzero-length-array
  2107. ], [ TOR_TRY_COMPILE_WITH_CFLAGS(warning_flag, [],
  2108. [TOR_WARNING_FLAGS="$TOR_WARNING_FLAGS warning_flag" CFLAGS="$CFLAGS warning_flag"], true)
  2109. ])
  2110. dnl We should re-enable this in some later version. Clang doesn't
  2111. dnl mind, but it causes trouble with GCC.
  2112. dnl -Wstrict-overflow=2
  2113. dnl These seem to require annotations that we don't currently use,
  2114. dnl and they give false positives in our pthreads wrappers. (Clang 4)
  2115. dnl -Wthread-safety
  2116. dnl -Wthread-safety-analysis
  2117. dnl -Wthread-safety-attributes
  2118. dnl -Wthread-safety-beta
  2119. dnl -Wthread-safety-precise
  2120. W_FLAGS="$W_FLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  2121. W_FLAGS="$W_FLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  2122. W_FLAGS="$W_FLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  2123. W_FLAGS="$W_FLAGS -Wwrite-strings"
  2124. W_FLAGS="$W_FLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  2125. W_FLAGS="$W_FLAGS -Waggregate-return -Wpacked -Wunused"
  2126. W_FLAGS="$W_FLAGS -Wunused-parameter "
  2127. # These interfere with building main() { return 0; }, which autoconf
  2128. # likes to use as its default program.
  2129. W_FLAGS="$W_FLAGS -Wold-style-definition -Wmissing-declarations"
  2130. TOR_WARNING_FLAGS="$TOR_WARNING_FLAGS $W_FLAGS"
  2131. CFLAGS="$CFLAGS $W_FLAGS"
  2132. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  2133. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  2134. fi
  2135. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  2136. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  2137. fi
  2138. if test "$tor_cv_cflags__warn_unused_const_variable_2" = "yes"; then
  2139. AC_DEFINE([HAVE_CFLAG_WUNUSED_CONST_VARIABLE], 1, [True if we have -Wunused-const-variable])
  2140. fi
  2141. CFLAGS="$CFLAGS_NOWARNINGS"
  2142. if test "x$enable_fatal_warnings" = "xyes"; then
  2143. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  2144. # default autoconf programs are full of errors.
  2145. CFLAGS="$CFLAGS -Werror"
  2146. fi
  2147. fi
  2148. AC_SUBST(TOR_WARNING_FLAGS)
  2149. echo "$TOR_WARNING_FLAGS">warning_flags
  2150. TOR_TRY_COMPILE_WITH_CFLAGS([@warning_flags], [],
  2151. CFLAGS="$CFLAGS @warning_flags",
  2152. CFLAGS="$CFLAGS $TOR_WARNING_FLAGS")
  2153. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  2154. case "$host_os" in
  2155. darwin*)
  2156. 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.])
  2157. esac
  2158. fi
  2159. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  2160. AC_CONFIG_FILES([
  2161. Doxyfile
  2162. Makefile
  2163. config.rust
  2164. contrib/dist/suse/tor.sh
  2165. contrib/operator-tools/tor.logrotate
  2166. contrib/dist/tor.sh
  2167. contrib/dist/torctl
  2168. contrib/dist/tor.service
  2169. src/config/torrc.sample
  2170. src/config/torrc.minimal
  2171. src/rust/.cargo/config
  2172. scripts/maint/checkOptionDocs.pl
  2173. warning_flags
  2174. ])
  2175. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  2176. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  2177. for file in $regular_mans ; do
  2178. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  2179. echo "==================================";
  2180. echo;
  2181. echo "Building Tor has failed since manpages cannot be built.";
  2182. echo;
  2183. echo "You need asciidoc installed to be able to build the manpages.";
  2184. echo "To build without manpages, use the --disable-asciidoc argument";
  2185. echo "when calling configure.";
  2186. echo;
  2187. echo "==================================";
  2188. exit 1;
  2189. fi
  2190. done
  2191. fi
  2192. if test "$fragile_hardening" = "yes"; then
  2193. AC_MSG_WARN([
  2194. ============
  2195. Warning! Building Tor with --enable-fragile-hardening (also known as
  2196. --enable-expensive-hardening) makes some kinds of attacks harder, but makes
  2197. other kinds of attacks easier. A Tor instance build with this option will be
  2198. somewhat less vulnerable to remote code execution, arithmetic overflow, or
  2199. out-of-bounds read/writes... but at the cost of becoming more vulnerable to
  2200. denial of service attacks. For more information, see
  2201. https://trac.torproject.org/projects/tor/wiki/doc/TorFragileHardening
  2202. ============
  2203. ])
  2204. fi
  2205. AC_OUTPUT