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