configure.ac 75 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) 2007-2018, The Tor Project, Inc.
  4. dnl See LICENSE for licensing information
  5. AC_PREREQ([2.63])
  6. AC_INIT([tor],[0.3.5.0-alpha-dev])
  7. AC_CONFIG_SRCDIR([src/app/main/tor_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 -Wall -Werror])
  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. AC_ARG_ENABLE(openbsd-malloc,
  19. AS_HELP_STRING(--enable-openbsd-malloc, [use malloc code from OpenBSD. Linux only. Deprecated: see --with-malloc]))
  20. AC_ARG_ENABLE(static-openssl,
  21. AS_HELP_STRING(--enable-static-openssl, [link against a static openssl library. Requires --with-openssl-dir]))
  22. AC_ARG_ENABLE(static-libevent,
  23. AS_HELP_STRING(--enable-static-libevent, [link against a static libevent library. Requires --with-libevent-dir]))
  24. AC_ARG_ENABLE(static-zlib,
  25. AS_HELP_STRING(--enable-static-zlib, [link against a static zlib library. Requires --with-zlib-dir]))
  26. AC_ARG_ENABLE(static-tor,
  27. AS_HELP_STRING(--enable-static-tor, [create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir]))
  28. AC_ARG_ENABLE(unittests,
  29. AS_HELP_STRING(--disable-unittests, [don't build unit tests for Tor. Risky!]))
  30. AC_ARG_ENABLE(coverage,
  31. AS_HELP_STRING(--enable-coverage, [enable coverage support in the unit-test build]))
  32. AC_ARG_ENABLE(asserts-in-tests,
  33. AS_HELP_STRING(--disable-asserts-in-tests, [disable tor_assert() calls in the unit tests, for branch coverage]))
  34. AC_ARG_ENABLE(system-torrc,
  35. AS_HELP_STRING(--disable-system-torrc, [don't look for a system-wide torrc file]))
  36. AC_ARG_ENABLE(libfuzzer,
  37. AS_HELP_STRING(--enable-libfuzzer, [build extra fuzzers based on 'libfuzzer']))
  38. AC_ARG_ENABLE(oss-fuzz,
  39. AS_HELP_STRING(--enable-oss-fuzz, [build extra fuzzers based on 'oss-fuzz' environment]))
  40. AC_ARG_ENABLE(memory-sentinels,
  41. AS_HELP_STRING(--disable-memory-sentinels, [disable code that tries to prevent some kinds of memory access bugs. For fuzzing only.]))
  42. AC_ARG_ENABLE(rust,
  43. AS_HELP_STRING(--enable-rust, [enable rust integration]))
  44. AC_ARG_ENABLE(cargo-online-mode,
  45. AS_HELP_STRING(--enable-cargo-online-mode, [Allow cargo to make network requests to fetch crates. For builds with rust only.]))
  46. AC_ARG_ENABLE(restart-debugging,
  47. AS_HELP_STRING(--enable-restart-debugging, [Build Tor with support for debugging in-process restart. Developers only.]))
  48. AC_ARG_ENABLE(zstd-advanced-apis,
  49. AS_HELP_STRING(--disable-zstd-advanced-apis, [Build without support for zstd's "static-only" APIs.]))
  50. if test "x$enable_coverage" != "xyes" -a "x$enable_asserts_in_tests" = "xno" ; then
  51. AC_MSG_ERROR([Can't disable assertions outside of coverage build])
  52. fi
  53. AM_CONDITIONAL(UNITTESTS_ENABLED, test "x$enable_unittests" != "xno")
  54. AM_CONDITIONAL(COVERAGE_ENABLED, test "x$enable_coverage" = "xyes")
  55. AM_CONDITIONAL(DISABLE_ASSERTS_IN_UNIT_TESTS, test "x$enable_asserts_in_tests" = "xno")
  56. AM_CONDITIONAL(LIBFUZZER_ENABLED, test "x$enable_libfuzzer" = "xyes")
  57. AM_CONDITIONAL(OSS_FUZZ_ENABLED, test "x$enable_oss_fuzz" = "xyes")
  58. AM_CONDITIONAL(USE_RUST, test "x$enable_rust" = "xyes")
  59. if test "$enable_static_tor" = "yes"; then
  60. enable_static_libevent="yes";
  61. enable_static_openssl="yes";
  62. enable_static_zlib="yes";
  63. CFLAGS="$CFLAGS -static"
  64. fi
  65. if test "$enable_system_torrc" = "no"; then
  66. AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
  67. [Defined if we're not going to look for a torrc in SYSCONF])
  68. fi
  69. if test "$enable_memory_sentinels" = "no"; then
  70. AC_DEFINE(DISABLE_MEMORY_SENTINELS, 1,
  71. [Defined if we're turning off memory safety code to look for bugs])
  72. fi
  73. AC_ARG_ENABLE(asciidoc,
  74. AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
  75. [case "${enableval}" in
  76. "yes") asciidoc=true ;;
  77. "no") asciidoc=false ;;
  78. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  79. esac], [asciidoc=true])
  80. # systemd notify support
  81. AC_ARG_ENABLE(systemd,
  82. AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
  83. [case "${enableval}" in
  84. "yes") systemd=true ;;
  85. "no") systemd=false ;;
  86. * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
  87. esac], [systemd=auto])
  88. if test "$enable_restart_debugging" = "yes"; then
  89. AC_DEFINE(ENABLE_RESTART_DEBUGGING, 1,
  90. [Defined if we're building with support for in-process restart debugging.])
  91. fi
  92. if test "$enable_zstd_advanced_apis" != "no"; then
  93. AC_DEFINE(ENABLE_ZSTD_ADVANCED_APIS, 1,
  94. [Defined if we're going to try to use zstd's "static-only" APIs.])
  95. fi
  96. # systemd support
  97. if test "x$enable_systemd" = "xno"; then
  98. have_systemd=no;
  99. else
  100. PKG_CHECK_MODULES(SYSTEMD,
  101. [libsystemd-daemon],
  102. have_systemd=yes,
  103. have_systemd=no)
  104. if test "x$have_systemd" = "xno"; then
  105. AC_MSG_NOTICE([Okay, checking for systemd a different way...])
  106. PKG_CHECK_MODULES(SYSTEMD,
  107. [libsystemd],
  108. have_systemd=yes,
  109. have_systemd=no)
  110. fi
  111. fi
  112. if test "x$have_systemd" = "xyes"; then
  113. AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
  114. TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
  115. TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
  116. PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
  117. [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
  118. fi
  119. AC_SUBST(TOR_SYSTEMD_CFLAGS)
  120. AC_SUBST(TOR_SYSTEMD_LIBS)
  121. if test "x$enable_systemd" = "xyes" -a "x$have_systemd" != "xyes" ; then
  122. AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
  123. fi
  124. case "$host" in
  125. *-*-solaris* )
  126. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  127. ;;
  128. esac
  129. AC_ARG_ENABLE(gcc-warnings,
  130. AS_HELP_STRING(--enable-gcc-warnings, [deprecated alias for enable-fatal-warnings]))
  131. AC_ARG_ENABLE(fatal-warnings,
  132. AS_HELP_STRING(--enable-fatal-warnings, [tell the compiler to treat all warnings as errors.]))
  133. AC_ARG_ENABLE(gcc-warnings-advisory,
  134. AS_HELP_STRING(--disable-gcc-warnings-advisory, [disable the regular verbose warnings]))
  135. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  136. AC_ARG_ENABLE(gcc-hardening,
  137. AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
  138. dnl Deprecated --enable-expensive-hardening but keep it for now for backward compat.
  139. AC_ARG_ENABLE(expensive-hardening,
  140. AS_HELP_STRING(--enable-expensive-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  141. AC_ARG_ENABLE(fragile-hardening,
  142. AS_HELP_STRING(--enable-fragile-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  143. if test "x$enable_expensive_hardening" = "xyes" || test "x$enable_fragile_hardening" = "xyes"; then
  144. fragile_hardening="yes"
  145. AC_DEFINE(DEBUG_SMARTLIST, 1, [Enable smartlist debugging])
  146. fi
  147. dnl Linker hardening options
  148. dnl Currently these options are ELF specific - you can't use this with MacOSX
  149. AC_ARG_ENABLE(linker-hardening,
  150. AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
  151. AC_ARG_ENABLE(local-appdata,
  152. AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
  153. if test "$enable_local_appdata" = "yes"; then
  154. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  155. [Defined if we default to host local appdata paths on Windows])
  156. fi
  157. # Tor2web mode flag
  158. AC_ARG_ENABLE(tor2web-mode,
  159. AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
  160. [if test "x$enableval" = "xyes"; then
  161. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  162. fi])
  163. AC_ARG_ENABLE(tool-name-check,
  164. AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
  165. AC_ARG_ENABLE(seccomp,
  166. AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
  167. AC_ARG_ENABLE(libscrypt,
  168. AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
  169. dnl Enable event tracing which are transformed to debug log statement.
  170. AC_ARG_ENABLE(event-tracing-debug,
  171. AS_HELP_STRING(--enable-event-tracing-debug, [build with event tracing to debug log]))
  172. AM_CONDITIONAL([USE_EVENT_TRACING_DEBUG], [test "x$enable_event_tracing_debug" = "xyes"])
  173. if test x$enable_event_tracing_debug = xyes; then
  174. AC_DEFINE([USE_EVENT_TRACING_DEBUG], [1], [Tracing framework to log debug])
  175. AC_DEFINE([TOR_EVENT_TRACING_ENABLED], [1], [Compile the event tracing instrumentation])
  176. fi
  177. dnl Enable Android only features.
  178. AC_ARG_ENABLE(android,
  179. AS_HELP_STRING(--enable-android, [build with Android features enabled]))
  180. AM_CONDITIONAL([USE_ANDROID], [test "x$enable_android" = "xyes"])
  181. if test "x$enable_android" = "xyes"; then
  182. AC_DEFINE([USE_ANDROID], [1], [Compile with Android specific features enabled])
  183. dnl Check if the Android log library is available.
  184. AC_CHECK_HEADERS([android/log.h])
  185. AC_SEARCH_LIBS(__android_log_write, [log])
  186. fi
  187. dnl ---
  188. dnl Tor modules options. These options are namespaced with --disable-module-XXX
  189. dnl ---
  190. dnl All our modules.
  191. m4_define(MODULES, dirauth)
  192. dnl Directory Authority module.
  193. AC_ARG_ENABLE([module-dirauth],
  194. AS_HELP_STRING([--disable-module-dirauth],
  195. [Do not build tor with the dirauth module]),
  196. [], dnl Action if-given
  197. AC_DEFINE([HAVE_MODULE_DIRAUTH], [1],
  198. [Compile with Directory Authority feature support]))
  199. AM_CONDITIONAL(BUILD_MODULE_DIRAUTH, [test "x$enable_module_dirauth" != "xno"])
  200. dnl Helper variables.
  201. TOR_MODULES_ALL_ENABLED=
  202. AC_DEFUN([ADD_MODULE], [
  203. MODULE=m4_toupper($1)
  204. TOR_MODULES_ALL_ENABLED="${TOR_MODULES_ALL_ENABLED} -DHAVE_MODULE_${MODULE}=1"
  205. ])
  206. m4_foreach_w([module], MODULES, [ADD_MODULE([module])])
  207. AC_SUBST(TOR_MODULES_ALL_ENABLED)
  208. dnl check for the correct "ar" when cross-compiling.
  209. dnl (AM_PROG_AR was new in automake 1.11.2, which we do not yet require,
  210. dnl so kludge up a replacement for the case where it isn't there yet.)
  211. m4_ifdef([AM_PROG_AR],
  212. [AM_PROG_AR],
  213. [AN_MAKEVAR([AR], [AC_PROG_AR])
  214. AN_PROGRAM([ar], [AC_PROG_AR])
  215. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [:])])
  216. AC_PROG_AR])
  217. dnl Check whether the above macro has settled for a simply named tool even
  218. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  219. dnl because that will find any cc on the system, not only the cross-compiler,
  220. dnl and then verify that a binary built with this compiler runs on the
  221. dnl build system. It will then come to the false conclusion that we're not
  222. dnl cross-compiling.
  223. if test "x$enable_tool_name_check" != "xno"; then
  224. if test "x$ac_tool_warned" = "xyes"; then
  225. AC_MSG_ERROR([We are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  226. elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
  227. AC_MSG_ERROR([We think we are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  228. fi
  229. fi
  230. AC_PROG_CC
  231. AC_PROG_CPP
  232. AC_PROG_MAKE_SET
  233. AC_PROG_RANLIB
  234. AC_PROG_SED
  235. AC_ARG_VAR([PERL], [path to Perl binary])
  236. AC_CHECK_PROGS([PERL], [perl])
  237. AM_CONDITIONAL(USE_PERL, [test "x$ac_cv_prog_PERL" != "x"])
  238. dnl check for asciidoc and a2x
  239. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  240. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  241. AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
  242. AM_PROG_CC_C_O
  243. AC_PROG_CC_C99
  244. AC_ARG_VAR([PYTHON], [path to Python binary])
  245. AC_CHECK_PROGS(PYTHON, [ \
  246. python3 \
  247. python3.8 python3.7 python3.6 python3.5 python3.4 \
  248. python \
  249. python2 python2.7])
  250. if test "x$PYTHON" = "x"; then
  251. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  252. fi
  253. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  254. dnl List all external rust crates we depend on here. Include the version
  255. rust_crates=" \
  256. digest-0.7.2 \
  257. libc-0.2.39 \
  258. "
  259. AC_SUBST(rust_crates)
  260. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  261. AC_C_FLEXIBLE_ARRAY_MEMBER
  262. ], [
  263. dnl Maybe we've got an old autoconf...
  264. AC_CACHE_CHECK([for flexible array members],
  265. tor_cv_c_flexarray,
  266. [AC_COMPILE_IFELSE(
  267. AC_LANG_PROGRAM([
  268. struct abc { int a; char b[]; };
  269. ], [
  270. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  271. def->b[0] = 33;
  272. ]),
  273. [tor_cv_c_flexarray=yes],
  274. [tor_cv_c_flexarray=no])])
  275. if test "$tor_cv_flexarray" = "yes"; then
  276. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  277. else
  278. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  279. fi
  280. ])
  281. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  282. tor_cv_c_c99_decl,
  283. [AC_COMPILE_IFELSE(
  284. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  285. [tor_cv_c_c99_decl=yes],
  286. [tor_cv_c_c99_decl=no] )])
  287. if test "$tor_cv_c_c99_decl" != "yes"; then
  288. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  289. fi
  290. AC_CACHE_CHECK([for working C99 designated initializers],
  291. tor_cv_c_c99_designated_init,
  292. [AC_COMPILE_IFELSE(
  293. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  294. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  295. [tor_cv_c_c99_designated_init=yes],
  296. [tor_cv_c_c99_designated_init=no] )])
  297. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  298. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  299. fi
  300. TORUSER=_tor
  301. AC_ARG_WITH(tor-user,
  302. AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
  303. [
  304. TORUSER=$withval
  305. ]
  306. )
  307. AC_SUBST(TORUSER)
  308. TORGROUP=_tor
  309. AC_ARG_WITH(tor-group,
  310. AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
  311. [
  312. TORGROUP=$withval
  313. ]
  314. )
  315. AC_SUBST(TORGROUP)
  316. dnl If _WIN32 is defined and non-zero, we are building for win32
  317. AC_MSG_CHECKING([for win32])
  318. AC_RUN_IFELSE([AC_LANG_SOURCE([
  319. int main(int c, char **v) {
  320. #ifdef _WIN32
  321. #if _WIN32
  322. return 0;
  323. #else
  324. return 1;
  325. #endif
  326. #else
  327. return 2;
  328. #endif
  329. }])],
  330. bwin32=true; AC_MSG_RESULT([yes]),
  331. bwin32=false; AC_MSG_RESULT([no]),
  332. bwin32=cross; AC_MSG_RESULT([cross])
  333. )
  334. if test "$bwin32" = "cross"; then
  335. AC_MSG_CHECKING([for win32 (cross)])
  336. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  337. #ifdef _WIN32
  338. int main(int c, char **v) {return 0;}
  339. #else
  340. #error
  341. int main(int c, char **v) {return x(y);}
  342. #endif
  343. ])],
  344. bwin32=true; AC_MSG_RESULT([yes]),
  345. bwin32=false; AC_MSG_RESULT([no]))
  346. fi
  347. AH_BOTTOM([
  348. #ifdef _WIN32
  349. /* Defined to access windows functions and definitions for >=WinXP */
  350. # ifndef WINVER
  351. # define WINVER 0x0501
  352. # endif
  353. /* Defined to access _other_ windows functions and definitions for >=WinXP */
  354. # ifndef _WIN32_WINNT
  355. # define _WIN32_WINNT 0x0501
  356. # endif
  357. /* Defined to avoid including some windows headers as part of Windows.h */
  358. # ifndef WIN32_LEAN_AND_MEAN
  359. # define WIN32_LEAN_AND_MEAN 1
  360. # endif
  361. #endif
  362. ])
  363. AM_CONDITIONAL(WIN32, test "x$bwin32" = "xtrue")
  364. AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
  365. AM_CONDITIONAL(BUILD_LIBTORRUNNER, test "x$bwin32" != "xtrue")
  366. dnl Enable C99 when compiling with MIPSpro
  367. AC_MSG_CHECKING([for MIPSpro compiler])
  368. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  369. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  370. #error
  371. return x(y);
  372. #endif
  373. ])],
  374. bmipspro=false; AC_MSG_RESULT(no),
  375. bmipspro=true; AC_MSG_RESULT(yes))
  376. if test "$bmipspro" = "true"; then
  377. CFLAGS="$CFLAGS -c99"
  378. fi
  379. AC_C_BIGENDIAN
  380. AC_ARG_VAR([TOR_RUST_TARGET], [Rust target, must be specified when cross-compiling (HOST != BUILD). example: i686-pc-windows-gnu])
  381. if test "x$enable_rust" = "xyes"; then
  382. AC_ARG_VAR([RUSTC], [path to the rustc binary])
  383. AC_CHECK_PROG([RUSTC], [rustc], [rustc],[no])
  384. if test "x$RUSTC" = "xno"; then
  385. AC_MSG_ERROR([rustc unavailable but rust integration requested.])
  386. fi
  387. AC_ARG_VAR([CARGO], [path to the cargo binary])
  388. AC_CHECK_PROG([CARGO], [cargo], [cargo],[no])
  389. if test "x$CARGO" = "xno"; then
  390. AC_MSG_ERROR([cargo unavailable but rust integration requested.])
  391. fi
  392. AC_DEFINE([HAVE_RUST], 1, [have Rust])
  393. if test "x$enable_fatal_warnings" = "xyes"; then
  394. RUST_WARN=
  395. else
  396. RUST_WARN=#
  397. fi
  398. if test "x$enable_cargo_online_mode" = "xyes"; then
  399. CARGO_ONLINE=
  400. RUST_DL=#
  401. else
  402. CARGO_ONLINE=--frozen
  403. RUST_DL=
  404. dnl When we're not allowed to touch the network, we need crate dependencies
  405. dnl locally available.
  406. AC_MSG_CHECKING([rust crate dependencies])
  407. AC_ARG_VAR([TOR_RUST_DEPENDENCIES], [path to directory with local crate mirror])
  408. if test "x$TOR_RUST_DEPENDENCIES" = "x"; then
  409. TOR_RUST_DEPENDENCIES="${srcdir}/src/ext/rust/crates"
  410. fi
  411. dnl Check whether the path exists before we try to cd into it.
  412. if test ! -d "$TOR_RUST_DEPENDENCIES"; then
  413. AC_MSG_ERROR([Rust dependency directory $TOR_RUST_DEPENDENCIES does not exist. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
  414. ERRORED=1
  415. fi
  416. dnl Make the path absolute, since we'll be using it from within a
  417. dnl subdirectory.
  418. TOR_RUST_DEPENDENCIES=$(cd "$TOR_RUST_DEPENDENCIES" ; pwd)
  419. for dep in $rust_crates; do
  420. if test ! -d "$TOR_RUST_DEPENDENCIES"/"$dep"; then
  421. 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.])
  422. ERRORED=1
  423. fi
  424. done
  425. if test "x$ERRORED" = "x"; then
  426. AC_MSG_RESULT([yes])
  427. fi
  428. fi
  429. dnl This is a workaround for #46797
  430. dnl (a.k.a https://github.com/rust-lang/rust/issues/46797 ). Once the
  431. dnl upstream bug is fixed, we can remove this workaround.
  432. case "$host_os" in
  433. darwin*)
  434. TOR_RUST_EXTRA_LIBS="-lresolv"
  435. ;;
  436. esac
  437. dnl For now both MSVC and MinGW rust libraries will output static libs with
  438. dnl the MSVC naming convention.
  439. if test "$bwin32" = "true"; then
  440. tor_rust_static_name=tor_rust.lib
  441. else
  442. tor_rust_static_name=libtor_rust.a
  443. fi
  444. AC_CANONICAL_BUILD
  445. if test -n "$TOR_RUST_TARGET"; then
  446. if test "$host" = "$build"; then
  447. AC_MSG_ERROR([HOST = BUILD is invalid if TOR_RUST_TARGET is specified, see configure --help for more information.])
  448. fi
  449. RUST_TARGET_PROP="target = '$TOR_RUST_TARGET'"
  450. TOR_RUST_LIB_PATH="src/rust/target/$TOR_RUST_TARGET/release/$tor_rust_static_name"
  451. else
  452. if test "$host" != "$build"; then
  453. AC_MSG_ERROR([TOR_RUST_TARGET must be specified when cross-compiling with Rust enabled.])
  454. fi
  455. RUST_TARGET_PROP=
  456. TOR_RUST_LIB_PATH="src/rust/target/release/$tor_rust_static_name"
  457. fi
  458. AC_SUBST(RUST_TARGET_PROP)
  459. AC_SUBST(TOR_RUST_LIB_PATH)
  460. AC_SUBST(CARGO_ONLINE)
  461. AC_SUBST(RUST_WARN)
  462. AC_SUBST(RUST_DL)
  463. dnl Let's check the rustc version, too
  464. AC_MSG_CHECKING([rust version])
  465. RUSTC_VERSION=`$RUSTC --version`
  466. RUSTC_VERSION_MAJOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 1`
  467. RUSTC_VERSION_MINOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 2`
  468. if test "x$RUSTC_VERSION_MAJOR" = "x" -o "x$RUSTC_VERSION_MINOR" = "x"; then
  469. AC_MSG_ERROR([rustc version couldn't be identified])
  470. fi
  471. if test "$RUSTC_VERSION_MAJOR" -lt 2 -a "$RUSTC_VERSION_MINOR" -lt 14; then
  472. AC_MSG_ERROR([rustc must be at least version 1.14])
  473. fi
  474. AC_MSG_RESULT([$RUSTC_VERSION])
  475. fi
  476. AC_SUBST(TOR_RUST_EXTRA_LIBS)
  477. AC_SEARCH_LIBS(socket, [socket network])
  478. AC_SEARCH_LIBS(gethostbyname, [nsl])
  479. AC_SEARCH_LIBS(dlopen, [dl])
  480. AC_SEARCH_LIBS(inet_aton, [resolv])
  481. AC_SEARCH_LIBS(backtrace, [execinfo])
  482. saved_LIBS="$LIBS"
  483. AC_SEARCH_LIBS([clock_gettime], [rt])
  484. if test "$LIBS" != "$saved_LIBS"; then
  485. # Looks like we need -lrt for clock_gettime().
  486. have_rt=yes
  487. fi
  488. AC_SEARCH_LIBS(pthread_create, [pthread])
  489. AC_SEARCH_LIBS(pthread_detach, [pthread])
  490. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  491. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  492. AC_CHECK_FUNCS(
  493. _NSGetEnviron \
  494. RtlSecureZeroMemory \
  495. SecureZeroMemory \
  496. accept4 \
  497. backtrace \
  498. backtrace_symbols_fd \
  499. eventfd \
  500. explicit_bzero \
  501. timingsafe_memcmp \
  502. flock \
  503. ftime \
  504. get_current_dir_name \
  505. getaddrinfo \
  506. getdelim \
  507. getifaddrs \
  508. getline \
  509. getpass \
  510. getrlimit \
  511. gettimeofday \
  512. gmtime_r \
  513. gnu_get_libc_version \
  514. htonll \
  515. inet_aton \
  516. ioctl \
  517. issetugid \
  518. llround \
  519. localtime_r \
  520. lround \
  521. memmem \
  522. memset_s \
  523. mmap \
  524. pipe \
  525. pipe2 \
  526. prctl \
  527. readpassphrase \
  528. rint \
  529. sigaction \
  530. socketpair \
  531. statvfs \
  532. strncasecmp \
  533. strcasecmp \
  534. strlcat \
  535. strlcpy \
  536. strnlen \
  537. strptime \
  538. strtok_r \
  539. strtoull \
  540. sysconf \
  541. sysctl \
  542. truncate \
  543. uname \
  544. usleep \
  545. vasprintf \
  546. _vscprintf
  547. )
  548. # Apple messed up when they added some functions: they
  549. # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
  550. # checks.
  551. # We should only probe for these functions if we are sure that we
  552. # are not targeting OS X 10.9 or earlier.
  553. AC_MSG_CHECKING([for a pre-Yosemite OS X build target])
  554. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  555. #ifdef __APPLE__
  556. # include <AvailabilityMacros.h>
  557. # ifndef MAC_OS_X_VERSION_10_10
  558. # define MAC_OS_X_VERSION_10_10 101000
  559. # endif
  560. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  561. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_10
  562. # error "Running on Mac OS X 10.9 or earlier"
  563. # endif
  564. # endif
  565. #endif
  566. ]], [[]])],
  567. [on_macos_pre_10_10=no ; AC_MSG_RESULT([no])],
  568. [on_macos_pre_10_10=yes; AC_MSG_RESULT([yes])])
  569. if test "$on_macos_pre_10_10" = "no"; then
  570. AC_CHECK_FUNCS(
  571. mach_approximate_time \
  572. )
  573. fi
  574. # We should only probe for these functions if we are sure that we
  575. # are not targeting OSX 10.11 or earlier.
  576. AC_MSG_CHECKING([for a pre-Sierra OSX build target])
  577. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  578. #ifdef __APPLE__
  579. # include <AvailabilityMacros.h>
  580. # ifndef MAC_OS_X_VERSION_10_12
  581. # define MAC_OS_X_VERSION_10_12 101200
  582. # endif
  583. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  584. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  585. # error "Running on Mac OSX 10.11 or earlier"
  586. # endif
  587. # endif
  588. #endif
  589. ]], [[]])],
  590. [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
  591. [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
  592. if test "$on_macos_pre_10_12" = "no"; then
  593. AC_CHECK_FUNCS(
  594. clock_gettime \
  595. getentropy \
  596. )
  597. fi
  598. if test "$bwin32" != "true"; then
  599. AC_CHECK_HEADERS(pthread.h)
  600. AC_CHECK_FUNCS(pthread_create)
  601. AC_CHECK_FUNCS(pthread_condattr_setclock)
  602. fi
  603. if test "$bwin32" = "true"; then
  604. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  605. #include <windows.h>
  606. #include <conio.h>
  607. #include <wchar.h>
  608. ])
  609. fi
  610. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  611. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  612. AC_MSG_CHECKING([whether free(NULL) works])
  613. AC_RUN_IFELSE([AC_LANG_PROGRAM([
  614. #include <stdlib.h>
  615. ], [
  616. char *p = NULL;
  617. free(p);
  618. ])],
  619. [free_null_ok=true; AC_MSG_RESULT(yes)],
  620. [free_null_ok=false; AC_MSG_RESULT(no)],
  621. [free_null_ok=cross; AC_MSG_RESULT(cross)])
  622. if test "$free_null_ok" = "false"; then
  623. AC_MSG_ERROR([Your libc implementation doesn't allow free(NULL), as required by C99.])
  624. fi
  625. dnl ------------------------------------------------------
  626. dnl Where do you live, libevent? And how do we call you?
  627. if test "$bwin32" = "true"; then
  628. TOR_LIB_WS32=-lws2_32
  629. TOR_LIB_IPHLPAPI=-liphlpapi
  630. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  631. # think it's actually necessary.
  632. TOR_LIB_GDI=-lgdi32
  633. TOR_LIB_USERENV=-luserenv
  634. else
  635. TOR_LIB_WS32=
  636. TOR_LIB_GDI=
  637. TOR_LIB_USERENV=
  638. fi
  639. AC_SUBST(TOR_LIB_WS32)
  640. AC_SUBST(TOR_LIB_GDI)
  641. AC_SUBST(TOR_LIB_IPHLPAPI)
  642. AC_SUBST(TOR_LIB_USERENV)
  643. tor_libevent_pkg_redhat="libevent"
  644. tor_libevent_pkg_debian="libevent-dev"
  645. tor_libevent_devpkg_redhat="libevent-devel"
  646. tor_libevent_devpkg_debian="libevent-dev"
  647. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  648. dnl linking for static builds.
  649. STATIC_LIBEVENT_FLAGS=""
  650. if test "$enable_static_libevent" = "yes"; then
  651. if test "$have_rt" = "yes"; then
  652. STATIC_LIBEVENT_FLAGS=" -lrt "
  653. fi
  654. fi
  655. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  656. #ifdef _WIN32
  657. #include <winsock2.h>
  658. #endif
  659. #include <sys/time.h>
  660. #include <sys/types.h>
  661. #include <event2/event.h>], [
  662. #ifdef _WIN32
  663. #include <winsock2.h>
  664. #endif
  665. struct event_base;
  666. struct event_base *event_base_new(void);
  667. void event_base_free(struct event_base *);],
  668. [
  669. #ifdef _WIN32
  670. {WSADATA d; WSAStartup(0x101,&d); }
  671. #endif
  672. event_base_free(event_base_new());
  673. ], [--with-libevent-dir], [/opt/libevent])
  674. dnl Determine the incantation needed to link libevent.
  675. save_LIBS="$LIBS"
  676. save_LDFLAGS="$LDFLAGS"
  677. save_CPPFLAGS="$CPPFLAGS"
  678. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  679. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  680. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  681. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  682. if test "$enable_static_libevent" = "yes"; then
  683. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  684. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  685. else
  686. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  687. fi
  688. else
  689. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  690. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  691. 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"))
  692. if test "$ac_cv_search_event_new" != "none required"; then
  693. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  694. fi
  695. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  696. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  697. fi
  698. else
  699. AC_MSG_ERROR("libevent2 is required but the headers could not be found")
  700. fi
  701. fi
  702. dnl Now check for particular libevent functions.
  703. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
  704. evutil_secure_rng_add_bytes \
  705. ])
  706. LIBS="$save_LIBS"
  707. LDFLAGS="$save_LDFLAGS"
  708. CPPFLAGS="$save_CPPFLAGS"
  709. dnl Check that libevent is at least at version 2.0.10, the first stable
  710. dnl release of its series
  711. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  712. AC_MSG_CHECKING([whether Libevent is new enough])
  713. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  714. #include <event2/event.h>
  715. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  716. #error
  717. int x = y(zz);
  718. #else
  719. int x = 1;
  720. #endif
  721. ])], [ AC_MSG_RESULT([yes]) ],
  722. [ AC_MSG_RESULT([no])
  723. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  724. LIBS="$save_LIBS"
  725. LDFLAGS="$save_LDFLAGS"
  726. CPPFLAGS="$save_CPPFLAGS"
  727. AC_SUBST(TOR_LIBEVENT_LIBS)
  728. dnl ------------------------------------------------------
  729. dnl Where do you live, libm?
  730. dnl On some platforms (Haiku/BeOS) the math library is
  731. dnl part of libroot. In which case don't link against lm
  732. TOR_LIB_MATH=""
  733. save_LIBS="$LIBS"
  734. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  735. if test "$ac_cv_search_pow" != "none required"; then
  736. TOR_LIB_MATH="$ac_cv_search_pow"
  737. fi
  738. LIBS="$save_LIBS"
  739. AC_SUBST(TOR_LIB_MATH)
  740. dnl ------------------------------------------------------
  741. dnl Where do you live, openssl? And how do we call you?
  742. tor_openssl_pkg_redhat="openssl"
  743. tor_openssl_pkg_debian="libssl-dev"
  744. tor_openssl_devpkg_redhat="openssl-devel"
  745. tor_openssl_devpkg_debian="libssl-dev"
  746. ALT_openssl_WITHVAL=""
  747. AC_ARG_WITH(ssl-dir,
  748. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  749. [
  750. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  751. ALT_openssl_WITHVAL="$withval"
  752. fi
  753. ])
  754. AC_MSG_NOTICE([Now, we'll look for OpenSSL >= 1.0.1])
  755. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI $TOR_LIB_WS32],
  756. [#include <openssl/ssl.h>
  757. char *getenv(const char *);],
  758. [struct ssl_cipher_st;
  759. unsigned SSL_CIPHER_get_id(const struct ssl_cipher_st *);
  760. char *getenv(const char *);],
  761. dnl This funny-looking test program calls getenv, so that the compiler
  762. dnl will neither make code that call SSL_CIPHER_get_id(NULL) [producing
  763. dnl a crash], nor optimize out the call to SSL_CIPHER_get_id().
  764. dnl We look for SSL_cipher_get_id() because it is present in
  765. dnl OpenSSL >=1.0.1, because it is not deprecated, and because Tor
  766. dnl depends on it.
  767. [if (getenv("THIS_SHOULDNT_BE_SET_X201803")) SSL_CIPHER_get_id((void *)0);], [],
  768. [/usr/local/opt/openssl /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /opt/openssl])
  769. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  770. if test "$enable_static_openssl" = "yes"; then
  771. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  772. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  773. else
  774. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  775. fi
  776. else
  777. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  778. fi
  779. AC_SUBST(TOR_OPENSSL_LIBS)
  780. dnl Now check for particular openssl functions.
  781. save_LIBS="$LIBS"
  782. save_LDFLAGS="$LDFLAGS"
  783. save_CPPFLAGS="$CPPFLAGS"
  784. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  785. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  786. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  787. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  788. #include <openssl/opensslv.h>
  789. #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
  790. #error "too old"
  791. #endif
  792. ]], [[]])],
  793. [ : ],
  794. [ 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.]) ])
  795. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  796. #include <openssl/opensslv.h>
  797. #include <openssl/evp.h>
  798. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  799. #error "no ECC"
  800. #endif
  801. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  802. #error "curves unavailable"
  803. #endif
  804. ]], [[]])],
  805. [ : ],
  806. [ 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.]) ])
  807. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  808. [#include <openssl/ssl.h>
  809. ])
  810. AC_CHECK_FUNCS([ \
  811. ERR_load_KDF_strings \
  812. SSL_SESSION_get_master_key \
  813. SSL_get_server_random \
  814. SSL_get_client_ciphers \
  815. SSL_get_client_random \
  816. SSL_CIPHER_find \
  817. TLS_method
  818. ])
  819. dnl Check if OpenSSL has scrypt implementation.
  820. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  821. dnl Check if OpenSSL structures are opaque
  822. AC_CHECK_MEMBERS([SSL.state], , ,
  823. [#include <openssl/ssl.h>
  824. ])
  825. AC_CHECK_SIZEOF(SHA_CTX, , [AC_INCLUDES_DEFAULT()
  826. #include <openssl/sha.h>
  827. ])
  828. dnl Define the set of checks for KIST scheduler support.
  829. AC_DEFUN([CHECK_KIST_SUPPORT],[
  830. dnl KIST needs struct tcp_info and for certain members to exist.
  831. AC_CHECK_MEMBERS(
  832. [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss],
  833. , ,[[#include <netinet/tcp.h>]])
  834. dnl KIST needs SIOCOUTQNSD to exist for an ioctl call.
  835. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  836. #include <linux/sockios.h>
  837. #ifndef SIOCOUTQNSD
  838. #error
  839. #endif
  840. ])], have_siocoutqnsd=yes, have_siocoutqnsd=no)
  841. if test "x$have_siocoutqnsd" = "xyes"; then
  842. if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then
  843. if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then
  844. have_kist_support=yes
  845. fi
  846. fi
  847. fi
  848. ])
  849. dnl Now, trigger the check.
  850. CHECK_KIST_SUPPORT
  851. AS_IF([test "x$have_kist_support" = "xyes"],
  852. [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported
  853. on this system])],
  854. [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])])
  855. LIBS="$save_LIBS"
  856. LDFLAGS="$save_LDFLAGS"
  857. CPPFLAGS="$save_CPPFLAGS"
  858. dnl ------------------------------------------------------
  859. dnl Where do you live, zlib? And how do we call you?
  860. tor_zlib_pkg_redhat="zlib"
  861. tor_zlib_pkg_debian="zlib1g"
  862. tor_zlib_devpkg_redhat="zlib-devel"
  863. tor_zlib_devpkg_debian="zlib1g-dev"
  864. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  865. [#include <zlib.h>],
  866. [const char * zlibVersion(void);],
  867. [zlibVersion();], [--with-zlib-dir],
  868. [/opt/zlib])
  869. if test "$enable_static_zlib" = "yes"; then
  870. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  871. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  872. using --enable-static-zlib")
  873. else
  874. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  875. fi
  876. else
  877. TOR_ZLIB_LIBS="-lz"
  878. fi
  879. AC_SUBST(TOR_ZLIB_LIBS)
  880. dnl ------------------------------------------------------
  881. dnl Where we do we find lzma?
  882. AC_ARG_ENABLE(lzma,
  883. AS_HELP_STRING(--enable-lzma, [enable support for the LZMA compression scheme.]),
  884. [case "${enableval}" in
  885. "yes") lzma=true ;;
  886. "no") lzma=false ;;
  887. * ) AC_MSG_ERROR(bad value for --enable-lzma) ;;
  888. esac], [lzma=auto])
  889. if test "x$enable_lzma" = "xno"; then
  890. have_lzma=no;
  891. else
  892. PKG_CHECK_MODULES([LZMA],
  893. [liblzma],
  894. have_lzma=yes,
  895. have_lzma=no)
  896. if test "x$have_lzma" = "xno" ; then
  897. AC_MSG_WARN([Unable to find liblzma.])
  898. fi
  899. fi
  900. if test "x$have_lzma" = "xyes"; then
  901. AC_DEFINE(HAVE_LZMA,1,[Have LZMA])
  902. TOR_LZMA_CFLAGS="${LZMA_CFLAGS}"
  903. TOR_LZMA_LIBS="${LZMA_LIBS}"
  904. fi
  905. AC_SUBST(TOR_LZMA_CFLAGS)
  906. AC_SUBST(TOR_LZMA_LIBS)
  907. dnl ------------------------------------------------------
  908. dnl Where we do we find zstd?
  909. AC_ARG_ENABLE(zstd,
  910. AS_HELP_STRING(--enable-zstd, [enable support for the Zstandard compression scheme.]),
  911. [case "${enableval}" in
  912. "yes") zstd=true ;;
  913. "no") zstd=false ;;
  914. * ) AC_MSG_ERROR(bad value for --enable-zstd) ;;
  915. esac], [zstd=auto])
  916. if test "x$enable_zstd" = "xno"; then
  917. have_zstd=no;
  918. else
  919. PKG_CHECK_MODULES([ZSTD],
  920. [libzstd >= 1.1],
  921. have_zstd=yes,
  922. have_zstd=no)
  923. if test "x$have_zstd" = "xno" ; then
  924. AC_MSG_WARN([Unable to find libzstd.])
  925. fi
  926. fi
  927. if test "x$have_zstd" = "xyes"; then
  928. AC_DEFINE(HAVE_ZSTD,1,[Have Zstd])
  929. TOR_ZSTD_CFLAGS="${ZSTD_CFLAGS}"
  930. TOR_ZSTD_LIBS="${ZSTD_LIBS}"
  931. dnl now check for zstd functions
  932. save_LIBS="$LIBS"
  933. save_CFLAGS="$CFLAGS"
  934. LIBS="$LIBS $ZSTD_LIBS"
  935. CFLAGS="$CFLAGS $ZSTD_CFLAGS"
  936. AC_CHECK_FUNCS(ZSTD_estimateCStreamSize \
  937. ZSTD_estimateDCtxSize)
  938. LIBS="$save_LIBS"
  939. CFLAGS="$save_CFLAGS"
  940. fi
  941. AC_SUBST(TOR_ZSTD_CFLAGS)
  942. AC_SUBST(TOR_ZSTD_LIBS)
  943. dnl ----------------------------------------------------------------------
  944. dnl Check if libcap is available for capabilities.
  945. tor_cap_pkg_debian="libcap2"
  946. tor_cap_pkg_redhat="libcap"
  947. tor_cap_devpkg_debian="libcap-dev"
  948. tor_cap_devpkg_redhat="libcap-devel"
  949. AC_CHECK_LIB([cap], [cap_init], [],
  950. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  951. )
  952. AC_CHECK_FUNCS(cap_set_proc)
  953. dnl ---------------------------------------------------------------------
  954. dnl Now that we know about our major libraries, we can check for compiler
  955. dnl and linker hardening options. We need to do this with the libraries known,
  956. dnl since sometimes the linker will like an option but not be willing to
  957. dnl use it with a build of a library.
  958. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  959. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_LIB_USERENV $TOR_CAP_LIBS"
  960. CFLAGS_FTRAPV=
  961. CFLAGS_FWRAPV=
  962. CFLAGS_ASAN=
  963. CFLAGS_UBSAN=
  964. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  965. #if !defined(__clang__)
  966. #error
  967. #endif])], have_clang=yes, have_clang=no)
  968. if test "x$enable_gcc_hardening" != "xno"; then
  969. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  970. if test "x$have_clang" = "xyes"; then
  971. TOR_CHECK_CFLAGS(-Qunused-arguments)
  972. fi
  973. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  974. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  975. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  976. m4_ifdef([AS_VAR_IF],[
  977. AS_VAR_IF(can_compile, [yes],
  978. AS_VAR_IF(can_link, [yes],
  979. [],
  980. 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.)]))
  981. )])
  982. AS_VAR_POPDEF([can_link])
  983. AS_VAR_POPDEF([can_compile])
  984. TOR_CHECK_CFLAGS(-Wstack-protector)
  985. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  986. if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
  987. TOR_CHECK_CFLAGS(-fPIE)
  988. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  989. fi
  990. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  991. fi
  992. if test "$fragile_hardening" = "yes"; then
  993. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  994. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  995. 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.])
  996. fi
  997. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  998. AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
  999. fi
  1000. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  1001. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  1002. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.*, and with Clang you need libclang_rt.ubsan*])
  1003. fi
  1004. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  1005. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  1006. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
  1007. fi
  1008. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  1009. fi
  1010. dnl Find the correct libraries to add in order to use the sanitizers.
  1011. dnl
  1012. dnl When building Rust, Cargo will run the linker with the -nodefaultlibs
  1013. dnl option, which will prevent the compiler from linking the sanitizer
  1014. dnl libraries it needs. We need to specify them manually.
  1015. dnl
  1016. dnl What's more, we need to specify them in a linker script rather than
  1017. dnl from build.rs: these options aren't allowed in the cargo:rustc-flags
  1018. dnl variable.
  1019. RUST_LINKER_OPTIONS=""
  1020. if test "x$have_clang" = "xyes"; then
  1021. if test "x$CFLAGS_ASAN" != "x"; then
  1022. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_ASAN"
  1023. fi
  1024. if test "x$CFLAGS_UBSAN" != "x"; then
  1025. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_UBSAN"
  1026. fi
  1027. else
  1028. if test "x$CFLAGS_ASAN" != "x"; then
  1029. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lasan"
  1030. fi
  1031. if test "x$CFLAGS_UBSAN" != "x"; then
  1032. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lubsan"
  1033. fi
  1034. fi
  1035. AC_SUBST(RUST_LINKER_OPTIONS)
  1036. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  1037. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  1038. mulodi_fixes_ftrapv=no
  1039. if test "$have_clang" = "yes"; then
  1040. saved_CFLAGS="$CFLAGS"
  1041. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  1042. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  1043. AC_LINK_IFELSE([
  1044. AC_LANG_SOURCE([[
  1045. #include <stdint.h>
  1046. #include <stdlib.h>
  1047. int main(int argc, char **argv)
  1048. {
  1049. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1050. * (int64_t)atoi(argv[3]);
  1051. return x == 9;
  1052. } ]])],
  1053. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  1054. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  1055. if test "$ftrapv_can_link" = "no"; then
  1056. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  1057. AC_LINK_IFELSE([
  1058. AC_LANG_SOURCE([[
  1059. #include <stdint.h>
  1060. #include <stdlib.h>
  1061. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  1062. *overflow=0;
  1063. return a;
  1064. }
  1065. int main(int argc, char **argv)
  1066. {
  1067. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1068. * (int64_t)atoi(argv[3]);
  1069. return x == 9;
  1070. } ]])],
  1071. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  1072. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  1073. fi
  1074. CFLAGS="$saved_CFLAGS"
  1075. fi
  1076. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  1077. dnl These cflags add bunches of branches, and we haven't been able to
  1078. dnl persuade ourselves that they're suitable for code that needs to be
  1079. dnl constant time.
  1080. AC_SUBST(CFLAGS_BUGTRAP)
  1081. dnl These cflags are variant ones sutable for code that needs to be
  1082. dnl constant-time.
  1083. AC_SUBST(CFLAGS_CONSTTIME)
  1084. if test "x$enable_linker_hardening" != "xno"; then
  1085. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  1086. fi
  1087. # For backtrace support
  1088. TOR_CHECK_LDFLAGS(-rdynamic)
  1089. dnl ------------------------------------------------------
  1090. dnl Now see if we have a -fomit-frame-pointer compiler option.
  1091. saved_CFLAGS="$CFLAGS"
  1092. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  1093. F_OMIT_FRAME_POINTER=''
  1094. if test "$saved_CFLAGS" != "$CFLAGS"; then
  1095. if test "$fragile_hardening" = "yes"; then
  1096. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  1097. fi
  1098. fi
  1099. CFLAGS="$saved_CFLAGS"
  1100. AC_SUBST(F_OMIT_FRAME_POINTER)
  1101. dnl ------------------------------------------------------
  1102. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  1103. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  1104. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  1105. dnl code will work.
  1106. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  1107. dnl ============================================================
  1108. dnl Check for libseccomp
  1109. if test "x$enable_seccomp" != "xno"; then
  1110. AC_CHECK_HEADERS([seccomp.h])
  1111. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  1112. fi
  1113. dnl ============================================================
  1114. dnl Check for libscrypt
  1115. if test "x$enable_libscrypt" != "xno"; then
  1116. AC_CHECK_HEADERS([libscrypt.h])
  1117. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  1118. AC_CHECK_FUNCS([libscrypt_scrypt])
  1119. fi
  1120. dnl ============================================================
  1121. dnl We need an implementation of curve25519.
  1122. dnl set these defaults.
  1123. build_curve25519_donna=no
  1124. build_curve25519_donna_c64=no
  1125. use_curve25519_donna=no
  1126. use_curve25519_nacl=no
  1127. CURVE25519_LIBS=
  1128. dnl The best choice is using curve25519-donna-c64, but that requires
  1129. dnl that we
  1130. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  1131. tor_cv_can_use_curve25519_donna_c64,
  1132. [AC_RUN_IFELSE(
  1133. [AC_LANG_PROGRAM([dnl
  1134. #include <stdint.h>
  1135. typedef unsigned uint128_t __attribute__((mode(TI)));
  1136. int func(uint64_t a, uint64_t b) {
  1137. uint128_t c = ((uint128_t)a) * b;
  1138. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1139. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1140. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1141. (((uint64_t)(c))&0xffffffffL) == 0;
  1142. return ok;
  1143. }
  1144. ], [dnl
  1145. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1146. ((uint64_t)1234567890) << 24);
  1147. return !ok;
  1148. ])],
  1149. [tor_cv_can_use_curve25519_donna_c64=yes],
  1150. [tor_cv_can_use_curve25519_donna_c64=no],
  1151. [AC_LINK_IFELSE(
  1152. [AC_LANG_PROGRAM([dnl
  1153. #include <stdint.h>
  1154. typedef unsigned uint128_t __attribute__((mode(TI)));
  1155. int func(uint64_t a, uint64_t b) {
  1156. uint128_t c = ((uint128_t)a) * b;
  1157. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1158. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1159. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1160. (((uint64_t)(c))&0xffffffffL) == 0;
  1161. return ok;
  1162. }
  1163. ], [dnl
  1164. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1165. ((uint64_t)1234567890) << 24);
  1166. return !ok;
  1167. ])],
  1168. [tor_cv_can_use_curve25519_donna_c64=cross],
  1169. [tor_cv_can_use_curve25519_donna_c64=no])])])
  1170. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  1171. nacl/crypto_scalarmult_curve25519.h])
  1172. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  1173. tor_cv_can_use_curve25519_nacl,
  1174. [tor_saved_LIBS="$LIBS"
  1175. LIBS="$LIBS -lnacl"
  1176. AC_LINK_IFELSE(
  1177. [AC_LANG_PROGRAM([dnl
  1178. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  1179. #include <crypto_scalarmult_curve25519.h>
  1180. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  1181. #include <nacl/crypto_scalarmult_curve25519.h>
  1182. #endif
  1183. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  1184. #error Hey, this is the reference implementation! That's not fast.
  1185. #endif
  1186. ], [
  1187. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  1188. ])], [tor_cv_can_use_curve25519_nacl=yes],
  1189. [tor_cv_can_use_curve25519_nacl=no])
  1190. LIBS="$tor_saved_LIBS" ])
  1191. dnl Okay, now we need to figure out which one to actually use. Fall back
  1192. dnl to curve25519-donna.c
  1193. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  1194. build_curve25519_donna_c64=yes
  1195. use_curve25519_donna=yes
  1196. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  1197. use_curve25519_nacl=yes
  1198. CURVE25519_LIBS=-lnacl
  1199. else
  1200. build_curve25519_donna=yes
  1201. use_curve25519_donna=yes
  1202. fi
  1203. if test "x$use_curve25519_donna" = "xyes"; then
  1204. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  1205. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  1206. fi
  1207. if test "x$use_curve25519_nacl" = "xyes"; then
  1208. AC_DEFINE(USE_CURVE25519_NACL, 1,
  1209. [Defined if we should use a curve25519 from nacl])
  1210. fi
  1211. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  1212. test "x$build_curve25519_donna" = "xyes")
  1213. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  1214. test "x$build_curve25519_donna_c64" = "xyes")
  1215. AC_SUBST(CURVE25519_LIBS)
  1216. dnl Make sure to enable support for large off_t if available.
  1217. AC_SYS_LARGEFILE
  1218. AC_CHECK_HEADERS([errno.h \
  1219. fcntl.h \
  1220. signal.h \
  1221. string.h \
  1222. sys/capability.h \
  1223. sys/fcntl.h \
  1224. sys/stat.h \
  1225. sys/time.h \
  1226. sys/types.h \
  1227. time.h \
  1228. unistd.h \
  1229. arpa/inet.h \
  1230. crt_externs.h \
  1231. execinfo.h \
  1232. gnu/libc-version.h \
  1233. grp.h \
  1234. ifaddrs.h \
  1235. inttypes.h \
  1236. limits.h \
  1237. linux/types.h \
  1238. machine/limits.h \
  1239. malloc.h \
  1240. malloc/malloc.h \
  1241. malloc_np.h \
  1242. netdb.h \
  1243. netinet/in.h \
  1244. netinet/in6.h \
  1245. pwd.h \
  1246. readpassphrase.h \
  1247. stdatomic.h \
  1248. sys/eventfd.h \
  1249. sys/file.h \
  1250. sys/ioctl.h \
  1251. sys/limits.h \
  1252. sys/mman.h \
  1253. sys/param.h \
  1254. sys/prctl.h \
  1255. sys/random.h \
  1256. sys/resource.h \
  1257. sys/select.h \
  1258. sys/socket.h \
  1259. sys/statvfs.h \
  1260. sys/syscall.h \
  1261. sys/sysctl.h \
  1262. sys/syslimits.h \
  1263. sys/time.h \
  1264. sys/types.h \
  1265. sys/un.h \
  1266. sys/utime.h \
  1267. sys/wait.h \
  1268. syslog.h \
  1269. utime.h])
  1270. AC_CHECK_HEADERS(sys/param.h)
  1271. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  1272. [#ifdef HAVE_SYS_TYPES_H
  1273. #include <sys/types.h>
  1274. #endif
  1275. #ifdef HAVE_SYS_SOCKET_H
  1276. #include <sys/socket.h>
  1277. #endif])
  1278. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  1279. [#ifdef HAVE_SYS_TYPES_H
  1280. #include <sys/types.h>
  1281. #endif
  1282. #ifdef HAVE_SYS_SOCKET_H
  1283. #include <sys/socket.h>
  1284. #endif
  1285. #ifdef HAVE_NET_IF_H
  1286. #include <net/if.h>
  1287. #endif
  1288. #ifdef HAVE_NETINET_IN_H
  1289. #include <netinet/in.h>
  1290. #endif])
  1291. AC_CHECK_HEADERS(linux/if.h,[],[],
  1292. [
  1293. #ifdef HAVE_SYS_SOCKET_H
  1294. #include <sys/socket.h>
  1295. #endif
  1296. ])
  1297. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  1298. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  1299. [#ifdef HAVE_SYS_TYPES_H
  1300. #include <sys/types.h>
  1301. #endif
  1302. #ifdef HAVE_SYS_SOCKET_H
  1303. #include <sys/socket.h>
  1304. #endif
  1305. #ifdef HAVE_LIMITS_H
  1306. #include <limits.h>
  1307. #endif
  1308. #ifdef HAVE_LINUX_TYPES_H
  1309. #include <linux/types.h>
  1310. #endif
  1311. #ifdef HAVE_NETINET_IN6_H
  1312. #include <netinet/in6.h>
  1313. #endif
  1314. #ifdef HAVE_NETINET_IN_H
  1315. #include <netinet/in.h>
  1316. #endif])
  1317. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  1318. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  1319. [#ifdef HAVE_SYS_TYPES_H
  1320. #include <sys/types.h>
  1321. #endif
  1322. #ifdef HAVE_SYS_SOCKET_H
  1323. #include <sys/socket.h>
  1324. #endif
  1325. #ifdef HAVE_LIMITS_H
  1326. #include <limits.h>
  1327. #endif
  1328. #ifdef HAVE_LINUX_TYPES_H
  1329. #include <linux/types.h>
  1330. #endif
  1331. #ifdef HAVE_NETINET_IN6_H
  1332. #include <netinet/in6.h>
  1333. #endif
  1334. #ifdef HAVE_NETINET_IN_H
  1335. #include <netinet/in.h>
  1336. #endif
  1337. #ifdef HAVE_LINUX_IF_H
  1338. #include <linux/if.h>
  1339. #endif])
  1340. transparent_ok=0
  1341. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  1342. transparent_ok=1
  1343. fi
  1344. if test "x$linux_netfilter_ipv4" = "x1"; then
  1345. transparent_ok=1
  1346. fi
  1347. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  1348. transparent_ok=1
  1349. fi
  1350. if test "x$transparent_ok" = "x1"; then
  1351. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  1352. else
  1353. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  1354. fi
  1355. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1356. [#ifdef HAVE_SYS_TYPES_H
  1357. #include <sys/types.h>
  1358. #endif
  1359. #ifdef HAVE_SYS_TIME_H
  1360. #include <sys/time.h>
  1361. #endif])
  1362. AC_CHECK_SIZEOF(char)
  1363. AC_CHECK_SIZEOF(short)
  1364. AC_CHECK_SIZEOF(int)
  1365. AC_CHECK_SIZEOF(long)
  1366. AC_CHECK_SIZEOF(long long)
  1367. AC_CHECK_SIZEOF(__int64)
  1368. AC_CHECK_SIZEOF(void *)
  1369. AC_CHECK_SIZEOF(time_t)
  1370. AC_CHECK_SIZEOF(size_t)
  1371. AC_CHECK_SIZEOF(pid_t)
  1372. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1373. AC_PC_FROM_UCONTEXT([:])
  1374. dnl used to include sockaddr_storage, but everybody has that.
  1375. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1376. [#ifdef HAVE_SYS_TYPES_H
  1377. #include <sys/types.h>
  1378. #endif
  1379. #ifdef HAVE_NETINET_IN_H
  1380. #include <netinet/in.h>
  1381. #endif
  1382. #ifdef HAVE_NETINET_IN6_H
  1383. #include <netinet/in6.h>
  1384. #endif
  1385. #ifdef HAVE_SYS_SOCKET_H
  1386. #include <sys/socket.h>
  1387. #endif
  1388. #ifdef _WIN32
  1389. #define _WIN32_WINNT 0x0501
  1390. #define WIN32_LEAN_AND_MEAN
  1391. #include <winsock2.h>
  1392. #include <ws2tcpip.h>
  1393. #endif
  1394. ])
  1395. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1396. [#ifdef HAVE_SYS_TYPES_H
  1397. #include <sys/types.h>
  1398. #endif
  1399. #ifdef HAVE_NETINET_IN_H
  1400. #include <netinet/in.h>
  1401. #endif
  1402. #ifdef HAVE_NETINET_IN6_H
  1403. #include <netinet/in6.h>
  1404. #endif
  1405. #ifdef HAVE_SYS_SOCKET_H
  1406. #include <sys/socket.h>
  1407. #endif
  1408. #ifdef _WIN32
  1409. #define _WIN32_WINNT 0x0501
  1410. #define WIN32_LEAN_AND_MEAN
  1411. #include <winsock2.h>
  1412. #include <ws2tcpip.h>
  1413. #endif
  1414. ])
  1415. AC_CHECK_TYPES([rlim_t], , ,
  1416. [#ifdef HAVE_SYS_TYPES_H
  1417. #include <sys/types.h>
  1418. #endif
  1419. #ifdef HAVE_SYS_TIME_H
  1420. #include <sys/time.h>
  1421. #endif
  1422. #ifdef HAVE_SYS_RESOURCE_H
  1423. #include <sys/resource.h>
  1424. #endif
  1425. ])
  1426. AX_CHECK_SIGN([time_t],
  1427. [ : ],
  1428. [ : ], [
  1429. #ifdef HAVE_SYS_TYPES_H
  1430. #include <sys/types.h>
  1431. #endif
  1432. #ifdef HAVE_SYS_TIME_H
  1433. #include <sys/time.h>
  1434. #endif
  1435. #ifdef HAVE_TIME_H
  1436. #include <time.h>
  1437. #endif
  1438. ])
  1439. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1440. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1441. fi
  1442. AX_CHECK_SIGN([size_t],
  1443. [ tor_cv_size_t_signed=yes ],
  1444. [ tor_cv_size_t_signed=no ], [
  1445. #ifdef HAVE_SYS_TYPES_H
  1446. #include <sys/types.h>
  1447. #endif
  1448. ])
  1449. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1450. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1451. fi
  1452. AX_CHECK_SIGN([enum always],
  1453. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1454. [ : ], [
  1455. enum always { AAA, BBB, CCC };
  1456. ])
  1457. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1458. #ifdef HAVE_SYS_SOCKET_H
  1459. #include <sys/socket.h>
  1460. #endif
  1461. ])
  1462. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1463. AC_CHECK_SIZEOF(cell_t)
  1464. # Now make sure that NULL can be represented as zero bytes.
  1465. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1466. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1467. [[#include <stdlib.h>
  1468. #include <string.h>
  1469. #include <stdio.h>
  1470. #ifdef HAVE_STDDEF_H
  1471. #include <stddef.h>
  1472. #endif
  1473. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1474. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1475. [tor_cv_null_is_zero=yes],
  1476. [tor_cv_null_is_zero=no],
  1477. [tor_cv_null_is_zero=cross])])
  1478. if test "$tor_cv_null_is_zero" = "cross"; then
  1479. # Cross-compiling; let's hope that the target isn't raving mad.
  1480. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1481. fi
  1482. if test "$tor_cv_null_is_zero" != "no"; then
  1483. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1484. [Define to 1 iff memset(0) sets pointers to NULL])
  1485. fi
  1486. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1487. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1488. [[#include <stdlib.h>
  1489. #include <string.h>
  1490. #include <stdio.h>
  1491. #ifdef HAVE_STDDEF_H
  1492. #include <stddef.h>
  1493. #endif
  1494. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1495. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1496. [tor_cv_dbl0_is_zero=yes],
  1497. [tor_cv_dbl0_is_zero=no],
  1498. [tor_cv_dbl0_is_zero=cross])])
  1499. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1500. # Cross-compiling; let's hope that the target isn't raving mad.
  1501. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1502. fi
  1503. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1504. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1505. [Define to 1 iff memset(0) sets doubles to 0.0])
  1506. fi
  1507. # And what happens when we malloc zero?
  1508. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1509. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1510. [[#include <stdlib.h>
  1511. #include <string.h>
  1512. #include <stdio.h>
  1513. #ifdef HAVE_STDDEF_H
  1514. #include <stddef.h>
  1515. #endif
  1516. int main () { return malloc(0)?0:1; }]])],
  1517. [tor_cv_malloc_zero_works=yes],
  1518. [tor_cv_malloc_zero_works=no],
  1519. [tor_cv_malloc_zero_works=cross])])
  1520. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1521. # Cross-compiling; let's hope that the target isn't raving mad.
  1522. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1523. fi
  1524. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1525. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1526. [Define to 1 iff malloc(0) returns a pointer])
  1527. fi
  1528. # whether we seem to be in a 2s-complement world.
  1529. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1530. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1531. [[int main () { int problem = ((-99) != (~99)+1);
  1532. return problem ? 1 : 0; }]])],
  1533. [tor_cv_twos_complement=yes],
  1534. [tor_cv_twos_complement=no],
  1535. [tor_cv_twos_complement=cross])])
  1536. if test "$tor_cv_twos_complement" = "cross"; then
  1537. # Cross-compiling; let's hope that the target isn't raving mad.
  1538. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1539. fi
  1540. if test "$tor_cv_twos_complement" != "no"; then
  1541. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1542. [Define to 1 iff we represent negative integers with
  1543. two's complement])
  1544. fi
  1545. # What does shifting a negative value do?
  1546. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1547. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1548. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1549. [tor_cv_sign_extend=yes],
  1550. [tor_cv_sign_extend=no],
  1551. [tor_cv_sign_extend=cross])])
  1552. if test "$tor_cv_sign_extend" = "cross"; then
  1553. # Cross-compiling; let's hope that the target isn't raving mad.
  1554. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1555. fi
  1556. if test "$tor_cv_sign_extend" != "no"; then
  1557. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1558. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1559. fi
  1560. # Is uint8_t the same type as unsigned char?
  1561. AC_CACHE_CHECK([whether uint8_t is the same type as unsigned char], tor_cv_uint8_uchar,
  1562. [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1563. #include <stdint.h>
  1564. extern uint8_t c;
  1565. unsigned char c;]])],
  1566. [tor_cv_uint8_uchar=yes],
  1567. [tor_cv_uint8_uchar=no],
  1568. [tor_cv_uint8_uchar=cross])])
  1569. if test "$tor_cv_uint8_uchar" = "cross"; then
  1570. AC_MSG_NOTICE([Cross-compiling: we'll assume that uint8_t is the same type as unsigned char])
  1571. fi
  1572. if test "$tor_cv_uint8_uchar" = "no"; then
  1573. AC_MSG_ERROR([We assume that uint8_t is the same type as unsigned char, but your compiler disagrees.])
  1574. fi
  1575. AC_ARG_WITH(tcmalloc,
  1576. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library. Deprecated; see --with-malloc]),
  1577. [ tcmalloc=yes ], [ tcmalloc=no ])
  1578. default_malloc=system
  1579. if test "x$enable_openbsd_malloc" = "xyes" ; then
  1580. AC_MSG_NOTICE([The --enable-openbsd-malloc argument is deprecated; use --with-malloc=openbsd instead.])
  1581. default_malloc=openbsd
  1582. fi
  1583. if test "x$tcmalloc" = "xyes"; then
  1584. AC_MSG_NOTICE([The --with-tcmalloc argument is deprecated; use --with-malloc=tcmalloc instead.])
  1585. default_malloc=tcmalloc
  1586. fi
  1587. AC_ARG_WITH(malloc,
  1588. AS_HELP_STRING([--with-malloc=[system,jemalloc,tcmalloc,openbsd]],
  1589. [select special malloc implementation [system]]),
  1590. [ malloc="$with_malloc" ], [ malloc="$default_malloc" ])
  1591. AS_CASE([$malloc],
  1592. [tcmalloc], [
  1593. PKG_CHECK_MODULES([TCMALLOC],
  1594. [libtcmalloc],
  1595. have_tcmalloc=yes,
  1596. have_tcmalloc=no)
  1597. if test "x$have_tcmalloc" = "xno" ; then
  1598. AC_MSG_ERROR([Unable to find tcmalloc requested by --with-malloc.])
  1599. fi
  1600. CFLAGS="$CFLAGS $TCMALLOC_CFLAGS"
  1601. LIBS="$TCMALLOC_LIBS $LIBS"
  1602. ],
  1603. [jemalloc], [
  1604. PKG_CHECK_MODULES([JEMALLOC],
  1605. [jemalloc],
  1606. have_jemalloc=yes,
  1607. have_jemalloc=no)
  1608. if test "x$have_tcmalloc" = "xno" ; then
  1609. AC_MSG_ERROR([Unable to find jemalloc requested by --with-malloc.])
  1610. fi
  1611. CFLAGS="$CFLAGS $JEMALLOC_CFLAGS"
  1612. LIBS="$JEMALLOC_LIBS $LIBS"
  1613. using_custom_malloc=yes
  1614. ],
  1615. [openbsd], [
  1616. AC_MSG_WARN([The openbsd malloc port is deprecated in Tor 0.3.5 and will be removed in a future version.])
  1617. enable_openbsd_malloc=yes
  1618. ],
  1619. [system], [
  1620. # handle this later, including the jemalloc fallback
  1621. AC_CHECK_FUNCS(mallinfo)
  1622. ],
  1623. [AC_MSG_ERROR([--with-malloc=`$with_malloc' not supported, see --help])
  1624. ])
  1625. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test "x$enable_openbsd_malloc" = "xyes")
  1626. if test "$malloc" != "system"; then
  1627. # Tell the C compiler not to use the system allocator functions.
  1628. TOR_CHECK_CFLAGS([-fno-builtin-malloc -fno-builtin-realloc -fno-builtin-calloc -fno-builtin-free])
  1629. fi
  1630. if test "$using_custom_malloc" = "yes"; then
  1631. # Tell the C compiler not to use the system allocator functions.
  1632. TOR_CHECK_CFLAGS([-fno-builtin-malloc -fno-builtin-realloc -fno-builtin-calloc -fno-builtin-free])
  1633. fi
  1634. # By default, we're going to assume we don't have mlockall()
  1635. # bionic and other platforms have various broken mlockall subsystems.
  1636. # Some systems don't have a working mlockall, some aren't linkable,
  1637. # and some have it but don't declare it.
  1638. AC_CHECK_FUNCS(mlockall)
  1639. AC_CHECK_DECLS([mlockall], , , [
  1640. #ifdef HAVE_SYS_MMAN_H
  1641. #include <sys/mman.h>
  1642. #endif])
  1643. # Allow user to specify an alternate syslog facility
  1644. AC_ARG_WITH(syslog-facility,
  1645. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1646. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1647. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1648. AC_SUBST(LOGFACILITY)
  1649. # Check if we have getresuid and getresgid
  1650. AC_CHECK_FUNCS(getresuid getresgid)
  1651. # Check for gethostbyname_r in all its glorious incompatible versions.
  1652. # (This logic is based on that in Python's configure.in)
  1653. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1654. [Define this if you have any gethostbyname_r()])
  1655. AC_CHECK_FUNC(gethostbyname_r, [
  1656. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1657. OLD_CFLAGS=$CFLAGS
  1658. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1659. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1660. #include <netdb.h>
  1661. ]], [[
  1662. char *cp1, *cp2;
  1663. struct hostent *h1, *h2;
  1664. int i1, i2;
  1665. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1666. ]])],[
  1667. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1668. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1669. [Define this if gethostbyname_r takes 6 arguments])
  1670. AC_MSG_RESULT(6)
  1671. ], [
  1672. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1673. #include <netdb.h>
  1674. ]], [[
  1675. char *cp1, *cp2;
  1676. struct hostent *h1;
  1677. int i1, i2;
  1678. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1679. ]])], [
  1680. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1681. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1682. [Define this if gethostbyname_r takes 5 arguments])
  1683. AC_MSG_RESULT(5)
  1684. ], [
  1685. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1686. #include <netdb.h>
  1687. ]], [[
  1688. char *cp1;
  1689. struct hostent *h1;
  1690. struct hostent_data hd;
  1691. (void) gethostbyname_r(cp1,h1,&hd);
  1692. ]])], [
  1693. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1694. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1695. [Define this if gethostbyname_r takes 3 arguments])
  1696. AC_MSG_RESULT(3)
  1697. ], [
  1698. AC_MSG_RESULT(0)
  1699. ])
  1700. ])
  1701. ])
  1702. CFLAGS=$OLD_CFLAGS
  1703. ])
  1704. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1705. tor_cv_have_func_macro,
  1706. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1707. #include <stdio.h>
  1708. int main(int c, char **v) { puts(__func__); }])],
  1709. tor_cv_have_func_macro=yes,
  1710. tor_cv_have_func_macro=no))
  1711. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1712. tor_cv_have_FUNC_macro,
  1713. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1714. #include <stdio.h>
  1715. int main(int c, char **v) { puts(__FUNC__); }])],
  1716. tor_cv_have_FUNC_macro=yes,
  1717. tor_cv_have_FUNC_macro=no))
  1718. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1719. tor_cv_have_FUNCTION_macro,
  1720. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1721. #include <stdio.h>
  1722. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1723. tor_cv_have_FUNCTION_macro=yes,
  1724. tor_cv_have_FUNCTION_macro=no))
  1725. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1726. tor_cv_have_environ_declared,
  1727. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1728. #ifdef HAVE_UNISTD_H
  1729. #include <unistd.h>
  1730. #endif
  1731. #include <stdlib.h>
  1732. int main(int c, char **v) { char **t = environ; }])],
  1733. tor_cv_have_environ_declared=yes,
  1734. tor_cv_have_environ_declared=no))
  1735. if test "$tor_cv_have_func_macro" = "yes"; then
  1736. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1737. fi
  1738. if test "$tor_cv_have_FUNC_macro" = "yes"; then
  1739. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1740. fi
  1741. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1742. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1743. [Defined if the compiler supports __FUNCTION__])
  1744. fi
  1745. if test "$tor_cv_have_environ_declared" = "yes"; then
  1746. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1747. [Defined if we have extern char **environ already declared])
  1748. fi
  1749. # $prefix stores the value of the --prefix command line option, or
  1750. # NONE if the option wasn't set. In the case that it wasn't set, make
  1751. # it be the default, so that we can use it to expand directories now.
  1752. if test "x$prefix" = "xNONE"; then
  1753. prefix=$ac_default_prefix
  1754. fi
  1755. # and similarly for $exec_prefix
  1756. if test "x$exec_prefix" = "xNONE"; then
  1757. exec_prefix=$prefix
  1758. fi
  1759. if test "x$BUILDDIR" = "x"; then
  1760. BUILDDIR=`pwd`
  1761. fi
  1762. AC_SUBST(BUILDDIR)
  1763. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1764. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1765. if test "x$SRCDIR" = "x"; then
  1766. SRCDIR=$(cd "$srcdir"; pwd)
  1767. fi
  1768. AH_TEMPLATE([SRCDIR],[tor's sourcedir directory])
  1769. AC_DEFINE_UNQUOTED(SRCDIR,"$SRCDIR")
  1770. if test "x$CONFDIR" = "x"; then
  1771. CONFDIR=`eval echo $sysconfdir/tor`
  1772. fi
  1773. AC_SUBST(CONFDIR)
  1774. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1775. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1776. BINDIR=`eval echo $bindir`
  1777. AC_SUBST(BINDIR)
  1778. LOCALSTATEDIR=`eval echo $localstatedir`
  1779. AC_SUBST(LOCALSTATEDIR)
  1780. if test "$bwin32" = "true"; then
  1781. # Test if the linker supports the --nxcompat and --dynamicbase options
  1782. # for Windows
  1783. save_LDFLAGS="$LDFLAGS"
  1784. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1785. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1786. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1787. [AC_MSG_RESULT([yes])]
  1788. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1789. [AC_MSG_RESULT([no])]
  1790. )
  1791. LDFLAGS="$save_LDFLAGS"
  1792. fi
  1793. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1794. # than autoconf's macros like.
  1795. if test "$GCC" = "yes"; then
  1796. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1797. # accident waiting to happen.
  1798. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1799. else
  1800. # Override optimization level for non-gcc compilers
  1801. CFLAGS="$CFLAGS -O"
  1802. enable_gcc_warnings=no
  1803. enable_gcc_warnings_advisory=no
  1804. fi
  1805. # Warnings implies advisory-warnings and -Werror.
  1806. if test "$enable_gcc_warnings" = "yes"; then
  1807. enable_gcc_warnings_advisory=yes
  1808. enable_fatal_warnings=yes
  1809. fi
  1810. # OS X Lion started deprecating the system openssl. Let's just disable
  1811. # all deprecation warnings on OS X. Also, to potentially make the binary
  1812. # a little smaller, let's enable dead_strip.
  1813. case "$host_os" in
  1814. darwin*)
  1815. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1816. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1817. esac
  1818. # Add some more warnings which we use in development but not in the
  1819. # released versions. (Some relevant gcc versions can't handle these.)
  1820. #
  1821. # Note that we have to do this near the end of the autoconf process, or
  1822. # else we may run into problems when these warnings hit on the testing C
  1823. # programs that autoconf wants to build.
  1824. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1825. case "$host" in
  1826. *-*-openbsd* | *-*-bitrig*)
  1827. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1828. # That's fine, except that the headers don't pass -Wredundant-decls.
  1829. # Therefore, let's disable -Wsystem-headers when we're building
  1830. # with maximal warnings on OpenBSD.
  1831. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1832. esac
  1833. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1834. # have it work better.
  1835. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1836. # This warning was added in gcc 4.3, but it appears to generate
  1837. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1838. #CFLAGS="$CFLAGS -Wlogical-op"
  1839. m4_foreach_w([warning_flag], [
  1840. -Waddress
  1841. -Waddress-of-array-temporary
  1842. -Waddress-of-temporary
  1843. -Wambiguous-macro
  1844. -Wanonymous-pack-parens
  1845. -Warc
  1846. -Warc-abi
  1847. -Warc-bridge-casts-disallowed-in-nonarc
  1848. -Warc-maybe-repeated-use-of-weak
  1849. -Warc-performSelector-leaks
  1850. -Warc-repeated-use-of-weak
  1851. -Warray-bounds
  1852. -Warray-bounds-pointer-arithmetic
  1853. -Wasm
  1854. -Wasm-operand-widths
  1855. -Watomic-properties
  1856. -Watomic-property-with-user-defined-accessor
  1857. -Wauto-import
  1858. -Wauto-storage-class
  1859. -Wauto-var-id
  1860. -Wavailability
  1861. -Wbackslash-newline-escape
  1862. -Wbad-array-new-length
  1863. -Wbind-to-temporary-copy
  1864. -Wbitfield-constant-conversion
  1865. -Wbool-conversion
  1866. -Wbool-conversions
  1867. -Wbuiltin-requires-header
  1868. -Wchar-align
  1869. -Wcompare-distinct-pointer-types
  1870. -Wcomplex-component-init
  1871. -Wconditional-type-mismatch
  1872. -Wconfig-macros
  1873. -Wconstant-conversion
  1874. -Wconstant-logical-operand
  1875. -Wconstexpr-not-const
  1876. -Wcustom-atomic-properties
  1877. -Wdangling-field
  1878. -Wdangling-initializer-list
  1879. -Wdate-time
  1880. -Wdelegating-ctor-cycles
  1881. -Wdeprecated-implementations
  1882. -Wdeprecated-register
  1883. -Wdirect-ivar-access
  1884. -Wdiscard-qual
  1885. -Wdistributed-object-modifiers
  1886. -Wdivision-by-zero
  1887. -Wdollar-in-identifier-extension
  1888. -Wdouble-promotion
  1889. -Wduplicate-decl-specifier
  1890. -Wduplicate-enum
  1891. -Wduplicate-method-arg
  1892. -Wduplicate-method-match
  1893. -Wduplicated-cond
  1894. -Wdynamic-class-memaccess
  1895. -Wembedded-directive
  1896. -Wempty-translation-unit
  1897. -Wenum-conversion
  1898. -Wexit-time-destructors
  1899. -Wexplicit-ownership-type
  1900. -Wextern-initializer
  1901. -Wextra
  1902. -Wextra-semi
  1903. -Wextra-tokens
  1904. -Wflexible-array-extensions
  1905. -Wfloat-conversion
  1906. -Wformat-non-iso
  1907. -Wfour-char-constants
  1908. -Wgcc-compat
  1909. -Wglobal-constructors
  1910. -Wgnu-array-member-paren-init
  1911. -Wgnu-designator
  1912. -Wgnu-static-float-init
  1913. -Wheader-guard
  1914. -Wheader-hygiene
  1915. -Widiomatic-parentheses
  1916. -Wignored-attributes
  1917. -Wimplicit-atomic-properties
  1918. -Wimplicit-conversion-floating-point-to-bool
  1919. -Wimplicit-exception-spec-mismatch
  1920. -Wimplicit-fallthrough
  1921. -Wimplicit-fallthrough-per-function
  1922. -Wimplicit-retain-self
  1923. -Wimport-preprocessor-directive-pedantic
  1924. -Wincompatible-library-redeclaration
  1925. -Wincompatible-pointer-types-discards-qualifiers
  1926. -Wincomplete-implementation
  1927. -Wincomplete-module
  1928. -Wincomplete-umbrella
  1929. -Winit-self
  1930. -Wint-conversions
  1931. -Wint-to-void-pointer-cast
  1932. -Winteger-overflow
  1933. -Winvalid-constexpr
  1934. -Winvalid-iboutlet
  1935. -Winvalid-noreturn
  1936. -Winvalid-pp-token
  1937. -Winvalid-source-encoding
  1938. -Winvalid-token-paste
  1939. -Wknr-promoted-parameter
  1940. -Wlarge-by-value-copy
  1941. -Wliteral-conversion
  1942. -Wliteral-range
  1943. -Wlocal-type-template-args
  1944. -Wlogical-op
  1945. -Wloop-analysis
  1946. -Wmain-return-type
  1947. -Wmalformed-warning-check
  1948. -Wmethod-signatures
  1949. -Wmicrosoft
  1950. -Wmicrosoft-exists
  1951. -Wmismatched-parameter-types
  1952. -Wmismatched-return-types
  1953. -Wmissing-field-initializers
  1954. -Wmissing-format-attribute
  1955. -Wmissing-noreturn
  1956. -Wmissing-selector-name
  1957. -Wmissing-sysroot
  1958. -Wmissing-variable-declarations
  1959. -Wmodule-conflict
  1960. -Wnested-anon-types
  1961. -Wnewline-eof
  1962. -Wnon-literal-null-conversion
  1963. -Wnon-pod-varargs
  1964. -Wnonportable-cfstrings
  1965. -Wnormalized=nfkc
  1966. -Wnull-arithmetic
  1967. -Wnull-character
  1968. -Wnull-conversion
  1969. -Wnull-dereference
  1970. -Wout-of-line-declaration
  1971. -Wover-aligned
  1972. -Woverlength-strings
  1973. -Woverride-init
  1974. -Woverriding-method-mismatch
  1975. -Wpointer-type-mismatch
  1976. -Wpredefined-identifier-outside-function
  1977. -Wprotocol-property-synthesis-ambiguity
  1978. -Wreadonly-iboutlet-property
  1979. -Wreadonly-setter-attrs
  1980. -Wreceiver-expr
  1981. -Wreceiver-forward-class
  1982. -Wreceiver-is-weak
  1983. -Wreinterpret-base-class
  1984. -Wrequires-super-attribute
  1985. -Wreserved-user-defined-literal
  1986. -Wreturn-stack-address
  1987. -Wsection
  1988. -Wselector-type-mismatch
  1989. -Wsentinel
  1990. -Wserialized-diagnostics
  1991. -Wshadow
  1992. -Wshift-count-negative
  1993. -Wshift-count-overflow
  1994. -Wshift-negative-value
  1995. -Wshift-overflow=2
  1996. -Wshift-sign-overflow
  1997. -Wshorten-64-to-32
  1998. -Wsizeof-array-argument
  1999. -Wsource-uses-openmp
  2000. -Wstatic-float-init
  2001. -Wstatic-in-inline
  2002. -Wstatic-local-in-inline
  2003. -Wstrict-overflow=1
  2004. -Wstring-compare
  2005. -Wstring-conversion
  2006. -Wstrlcpy-strlcat-size
  2007. -Wstrncat-size
  2008. -Wsuggest-attribute=format
  2009. -Wsuggest-attribute=noreturn
  2010. -Wsuper-class-method-mismatch
  2011. -Wswitch-bool
  2012. -Wsync-nand
  2013. -Wtautological-constant-out-of-range-compare
  2014. -Wtentative-definition-incomplete-type
  2015. -Wtrampolines
  2016. -Wtype-safety
  2017. -Wtypedef-redefinition
  2018. -Wtypename-missing
  2019. -Wundefined-inline
  2020. -Wundefined-internal
  2021. -Wundefined-reinterpret-cast
  2022. -Wunicode
  2023. -Wunicode-whitespace
  2024. -Wunknown-warning-option
  2025. -Wunnamed-type-template-args
  2026. -Wunneeded-member-function
  2027. -Wunsequenced
  2028. -Wunsupported-visibility
  2029. -Wunused-but-set-parameter
  2030. -Wunused-but-set-variable
  2031. -Wunused-command-line-argument
  2032. -Wunused-const-variable=2
  2033. -Wunused-exception-parameter
  2034. -Wunused-local-typedefs
  2035. -Wunused-member-function
  2036. -Wunused-sanitize-argument
  2037. -Wunused-volatile-lvalue
  2038. -Wuser-defined-literals
  2039. -Wvariadic-macros
  2040. -Wvector-conversion
  2041. -Wvector-conversions
  2042. -Wvexing-parse
  2043. -Wvisibility
  2044. -Wvla-extension
  2045. -Wzero-length-array
  2046. ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
  2047. dnl We should re-enable this in some later version. Clang doesn't
  2048. dnl mind, but it causes trouble with GCC.
  2049. dnl -Wstrict-overflow=2
  2050. dnl These seem to require annotations that we don't currently use,
  2051. dnl and they give false positives in our pthreads wrappers. (Clang 4)
  2052. dnl -Wthread-safety
  2053. dnl -Wthread-safety-analysis
  2054. dnl -Wthread-safety-attributes
  2055. dnl -Wthread-safety-beta
  2056. dnl -Wthread-safety-precise
  2057. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  2058. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  2059. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  2060. CFLAGS="$CFLAGS -Wwrite-strings"
  2061. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  2062. CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
  2063. CFLAGS="$CFLAGS -Wunused-parameter "
  2064. # These interfere with building main() { return 0; }, which autoconf
  2065. # likes to use as its default program.
  2066. CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
  2067. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  2068. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  2069. fi
  2070. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  2071. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  2072. fi
  2073. if test "$tor_cv_cflags__warn_unused_const_variable_2" = "yes"; then
  2074. AC_DEFINE([HAVE_CFLAG_WUNUSED_CONST_VARIABLE], 1, [True if we have -Wunused-const-variable])
  2075. fi
  2076. if test "x$enable_fatal_warnings" = "xyes"; then
  2077. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  2078. # default autoconf programs are full of errors.
  2079. CFLAGS="$CFLAGS -Werror"
  2080. fi
  2081. fi
  2082. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  2083. case "$host_os" in
  2084. darwin*)
  2085. 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.])
  2086. esac
  2087. fi
  2088. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  2089. AC_CONFIG_FILES([
  2090. Doxyfile
  2091. Makefile
  2092. config.rust
  2093. link_rust.sh
  2094. contrib/dist/suse/tor.sh
  2095. contrib/operator-tools/tor.logrotate
  2096. contrib/dist/tor.sh
  2097. contrib/dist/torctl
  2098. contrib/dist/tor.service
  2099. src/config/torrc.sample
  2100. src/config/torrc.minimal
  2101. src/rust/.cargo/config
  2102. scripts/maint/checkOptionDocs.pl
  2103. scripts/maint/updateVersions.pl
  2104. ])
  2105. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  2106. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  2107. for file in $regular_mans ; do
  2108. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  2109. echo "==================================";
  2110. echo;
  2111. echo "Building Tor has failed since manpages cannot be built.";
  2112. echo;
  2113. echo "You need asciidoc installed to be able to build the manpages.";
  2114. echo "To build without manpages, use the --disable-asciidoc argument";
  2115. echo "when calling configure.";
  2116. echo;
  2117. echo "==================================";
  2118. exit 1;
  2119. fi
  2120. done
  2121. fi
  2122. if test "$fragile_hardening" = "yes"; then
  2123. AC_MSG_WARN([
  2124. ============
  2125. Warning! Building Tor with --enable-fragile-hardening (also known as
  2126. --enable-expensive-hardening) makes some kinds of attacks harder, but makes
  2127. other kinds of attacks easier. A Tor instance build with this option will be
  2128. somewhat less vulnerable to remote code execution, arithmetic overflow, or
  2129. out-of-bounds read/writes... but at the cost of becoming more vulnerable to
  2130. denial of service attacks. For more information, see
  2131. https://trac.torproject.org/projects/tor/wiki/doc/TorFragileHardening
  2132. ============
  2133. ])
  2134. fi
  2135. AC_OUTPUT