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/or/main.c])
  8. AC_CONFIG_MACRO_DIR([m4])
  9. # "foreign" means we don't follow GNU package layout standards
  10. # "1.11" means we require automake version 1.11 or newer
  11. # "subdir-objects" means put .o files in the same directory as the .c files
  12. AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects -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. 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 "$bwin32" = "true"; then
  440. TOR_RUST_STATIC_NAME=tor_rust.lib
  441. else
  442. TOR_RUST_STATIC_NAME=libtor_rust.a
  443. fi
  444. AC_SUBST(TOR_RUST_STATIC_NAME)
  445. AC_SUBST(CARGO_ONLINE)
  446. AC_SUBST(RUST_WARN)
  447. AC_SUBST(RUST_DL)
  448. dnl Let's check the rustc version, too
  449. AC_MSG_CHECKING([rust version])
  450. RUSTC_VERSION=`$RUSTC --version`
  451. RUSTC_VERSION_MAJOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 1`
  452. RUSTC_VERSION_MINOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 2`
  453. if test "x$RUSTC_VERSION_MAJOR" = "x" -o "x$RUSTC_VERSION_MINOR" = "x"; then
  454. AC_MSG_ERROR([rustc version couldn't be identified])
  455. fi
  456. if test "$RUSTC_VERSION_MAJOR" -lt 2 -a "$RUSTC_VERSION_MINOR" -lt 14; then
  457. AC_MSG_ERROR([rustc must be at least version 1.14])
  458. fi
  459. AC_MSG_RESULT([$RUSTC_VERSION])
  460. fi
  461. AC_SUBST(TOR_RUST_EXTRA_LIBS)
  462. AC_SEARCH_LIBS(socket, [socket network])
  463. AC_SEARCH_LIBS(gethostbyname, [nsl])
  464. AC_SEARCH_LIBS(dlopen, [dl])
  465. AC_SEARCH_LIBS(inet_aton, [resolv])
  466. AC_SEARCH_LIBS(backtrace, [execinfo])
  467. saved_LIBS="$LIBS"
  468. AC_SEARCH_LIBS([clock_gettime], [rt])
  469. if test "$LIBS" != "$saved_LIBS"; then
  470. # Looks like we need -lrt for clock_gettime().
  471. have_rt=yes
  472. fi
  473. AC_SEARCH_LIBS(pthread_create, [pthread])
  474. AC_SEARCH_LIBS(pthread_detach, [pthread])
  475. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  476. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  477. AC_CHECK_FUNCS(
  478. _NSGetEnviron \
  479. RtlSecureZeroMemory \
  480. SecureZeroMemory \
  481. accept4 \
  482. backtrace \
  483. backtrace_symbols_fd \
  484. eventfd \
  485. explicit_bzero \
  486. timingsafe_memcmp \
  487. flock \
  488. ftime \
  489. get_current_dir_name \
  490. getaddrinfo \
  491. getifaddrs \
  492. getpass \
  493. getrlimit \
  494. gettimeofday \
  495. gmtime_r \
  496. gnu_get_libc_version \
  497. htonll \
  498. inet_aton \
  499. ioctl \
  500. issetugid \
  501. llround \
  502. localtime_r \
  503. lround \
  504. mach_approximate_time \
  505. memmem \
  506. memset_s \
  507. mmap \
  508. pipe \
  509. pipe2 \
  510. prctl \
  511. readpassphrase \
  512. rint \
  513. sigaction \
  514. socketpair \
  515. statvfs \
  516. strlcat \
  517. strlcpy \
  518. strnlen \
  519. strptime \
  520. strtok_r \
  521. strtoull \
  522. sysconf \
  523. sysctl \
  524. truncate \
  525. uname \
  526. usleep \
  527. vasprintf \
  528. _vscprintf
  529. )
  530. # Apple messed up when they added two functions functions in Sierra: they
  531. # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
  532. # checks. So we should only probe for those functions if we are sure that we
  533. # are not targeting OSX 10.11 or earlier.
  534. AC_MSG_CHECKING([for a pre-Sierra OSX build target])
  535. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  536. #ifdef __APPLE__
  537. # include <AvailabilityMacros.h>
  538. # ifndef MAC_OS_X_VERSION_10_12
  539. # define MAC_OS_X_VERSION_10_12 101200
  540. # endif
  541. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  542. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  543. # error "Running on Mac OSX 10.11 or earlier"
  544. # endif
  545. # endif
  546. #endif
  547. ]], [[]])],
  548. [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
  549. [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
  550. if test "$on_macos_pre_10_12" = "no"; then
  551. AC_CHECK_FUNCS(
  552. clock_gettime \
  553. getentropy \
  554. )
  555. fi
  556. if test "$bwin32" != "true"; then
  557. AC_CHECK_HEADERS(pthread.h)
  558. AC_CHECK_FUNCS(pthread_create)
  559. AC_CHECK_FUNCS(pthread_condattr_setclock)
  560. fi
  561. if test "$bwin32" = "true"; then
  562. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  563. #include <windows.h>
  564. #include <conio.h>
  565. #include <wchar.h>
  566. ])
  567. fi
  568. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  569. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  570. AC_MSG_CHECKING([whether free(NULL) works])
  571. AC_RUN_IFELSE([AC_LANG_PROGRAM([
  572. #include <stdlib.h>
  573. ], [
  574. char *p = NULL;
  575. free(p);
  576. ])],
  577. [free_null_ok=true; AC_MSG_RESULT(yes)],
  578. [free_null_ok=false; AC_MSG_RESULT(no)],
  579. [free_null_ok=cross; AC_MSG_RESULT(cross)])
  580. if test "$free_null_ok" = "false"; then
  581. AC_MSG_ERROR([Your libc implementation doesn't allow free(NULL), as required by C99.])
  582. fi
  583. dnl ------------------------------------------------------
  584. dnl Where do you live, libevent? And how do we call you?
  585. if test "$bwin32" = "true"; then
  586. TOR_LIB_WS32=-lws2_32
  587. TOR_LIB_IPHLPAPI=-liphlpapi
  588. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  589. # think it's actually necessary.
  590. TOR_LIB_GDI=-lgdi32
  591. TOR_LIB_USERENV=-luserenv
  592. else
  593. TOR_LIB_WS32=
  594. TOR_LIB_GDI=
  595. TOR_LIB_USERENV=
  596. fi
  597. AC_SUBST(TOR_LIB_WS32)
  598. AC_SUBST(TOR_LIB_GDI)
  599. AC_SUBST(TOR_LIB_IPHLPAPI)
  600. AC_SUBST(TOR_LIB_USERENV)
  601. tor_libevent_pkg_redhat="libevent"
  602. tor_libevent_pkg_debian="libevent-dev"
  603. tor_libevent_devpkg_redhat="libevent-devel"
  604. tor_libevent_devpkg_debian="libevent-dev"
  605. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  606. dnl linking for static builds.
  607. STATIC_LIBEVENT_FLAGS=""
  608. if test "$enable_static_libevent" = "yes"; then
  609. if test "$have_rt" = "yes"; then
  610. STATIC_LIBEVENT_FLAGS=" -lrt "
  611. fi
  612. fi
  613. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  614. #ifdef _WIN32
  615. #include <winsock2.h>
  616. #endif
  617. #include <sys/time.h>
  618. #include <sys/types.h>
  619. #include <event2/event.h>], [
  620. #ifdef _WIN32
  621. #include <winsock2.h>
  622. #endif
  623. struct event_base;
  624. struct event_base *event_base_new(void);
  625. void event_base_free(struct event_base *);],
  626. [
  627. #ifdef _WIN32
  628. {WSADATA d; WSAStartup(0x101,&d); }
  629. #endif
  630. event_base_free(event_base_new());
  631. ], [--with-libevent-dir], [/opt/libevent])
  632. dnl Determine the incantation needed to link libevent.
  633. save_LIBS="$LIBS"
  634. save_LDFLAGS="$LDFLAGS"
  635. save_CPPFLAGS="$CPPFLAGS"
  636. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  637. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  638. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  639. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  640. if test "$enable_static_libevent" = "yes"; then
  641. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  642. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  643. else
  644. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  645. fi
  646. else
  647. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  648. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  649. 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"))
  650. if test "$ac_cv_search_event_new" != "none required"; then
  651. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  652. fi
  653. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  654. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  655. fi
  656. else
  657. AC_MSG_ERROR("libevent2 is required but the headers could not be found")
  658. fi
  659. fi
  660. dnl Now check for particular libevent functions.
  661. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
  662. evutil_secure_rng_add_bytes \
  663. ])
  664. LIBS="$save_LIBS"
  665. LDFLAGS="$save_LDFLAGS"
  666. CPPFLAGS="$save_CPPFLAGS"
  667. dnl Check that libevent is at least at version 2.0.10, the first stable
  668. dnl release of its series
  669. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  670. AC_MSG_CHECKING([whether Libevent is new enough])
  671. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  672. #include <event2/event.h>
  673. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  674. #error
  675. int x = y(zz);
  676. #else
  677. int x = 1;
  678. #endif
  679. ])], [ AC_MSG_RESULT([yes]) ],
  680. [ AC_MSG_RESULT([no])
  681. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  682. LIBS="$save_LIBS"
  683. LDFLAGS="$save_LDFLAGS"
  684. CPPFLAGS="$save_CPPFLAGS"
  685. AC_SUBST(TOR_LIBEVENT_LIBS)
  686. dnl ------------------------------------------------------
  687. dnl Where do you live, libm?
  688. dnl On some platforms (Haiku/BeOS) the math library is
  689. dnl part of libroot. In which case don't link against lm
  690. TOR_LIB_MATH=""
  691. save_LIBS="$LIBS"
  692. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  693. if test "$ac_cv_search_pow" != "none required"; then
  694. TOR_LIB_MATH="$ac_cv_search_pow"
  695. fi
  696. LIBS="$save_LIBS"
  697. AC_SUBST(TOR_LIB_MATH)
  698. dnl ------------------------------------------------------
  699. dnl Where do you live, openssl? And how do we call you?
  700. tor_openssl_pkg_redhat="openssl"
  701. tor_openssl_pkg_debian="libssl-dev"
  702. tor_openssl_devpkg_redhat="openssl-devel"
  703. tor_openssl_devpkg_debian="libssl-dev"
  704. ALT_openssl_WITHVAL=""
  705. AC_ARG_WITH(ssl-dir,
  706. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  707. [
  708. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  709. ALT_openssl_WITHVAL="$withval"
  710. fi
  711. ])
  712. AC_MSG_NOTICE([Now, we'll look for OpenSSL >= 1.0.1])
  713. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI $TOR_LIB_WS32],
  714. [#include <openssl/ssl.h>
  715. char *getenv(const char *);],
  716. [struct ssl_cipher_st;
  717. unsigned SSL_CIPHER_get_id(const struct ssl_cipher_st *);
  718. char *getenv(const char *);],
  719. dnl This funny-looking test program calls getenv, so that the compiler
  720. dnl will neither make code that call SSL_CIPHER_get_id(NULL) [producing
  721. dnl a crash], nor optimize out the call to SSL_CIPHER_get_id().
  722. dnl We look for SSL_cipher_get_id() because it is present in
  723. dnl OpenSSL >=1.0.1, because it is not deprecated, and because Tor
  724. dnl depends on it.
  725. [if (getenv("THIS_SHOULDNT_BE_SET_X201803")) SSL_CIPHER_get_id((void *)0);], [],
  726. [/usr/local/opt/openssl /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /opt/openssl])
  727. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  728. if test "$enable_static_openssl" = "yes"; then
  729. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  730. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  731. else
  732. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  733. fi
  734. else
  735. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  736. fi
  737. AC_SUBST(TOR_OPENSSL_LIBS)
  738. dnl Now check for particular openssl functions.
  739. save_LIBS="$LIBS"
  740. save_LDFLAGS="$LDFLAGS"
  741. save_CPPFLAGS="$CPPFLAGS"
  742. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  743. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  744. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  745. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  746. #include <openssl/opensslv.h>
  747. #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
  748. #error "too old"
  749. #endif
  750. ]], [[]])],
  751. [ : ],
  752. [ 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.]) ])
  753. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  754. #include <openssl/opensslv.h>
  755. #include <openssl/evp.h>
  756. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  757. #error "no ECC"
  758. #endif
  759. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  760. #error "curves unavailable"
  761. #endif
  762. ]], [[]])],
  763. [ : ],
  764. [ 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.]) ])
  765. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  766. [#include <openssl/ssl.h>
  767. ])
  768. AC_CHECK_FUNCS([ \
  769. SSL_SESSION_get_master_key \
  770. SSL_get_server_random \
  771. SSL_get_client_ciphers \
  772. SSL_get_client_random \
  773. SSL_CIPHER_find \
  774. TLS_method
  775. ])
  776. dnl Check if OpenSSL has scrypt implementation.
  777. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  778. dnl Check if OpenSSL structures are opaque
  779. AC_CHECK_MEMBERS([SSL.state], , ,
  780. [#include <openssl/ssl.h>
  781. ])
  782. AC_CHECK_SIZEOF(SHA_CTX, , [AC_INCLUDES_DEFAULT()
  783. #include <openssl/sha.h>
  784. ])
  785. dnl Define the set of checks for KIST scheduler support.
  786. AC_DEFUN([CHECK_KIST_SUPPORT],[
  787. dnl KIST needs struct tcp_info and for certain members to exist.
  788. AC_CHECK_MEMBERS(
  789. [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss],
  790. , ,[[#include <netinet/tcp.h>]])
  791. dnl KIST needs SIOCOUTQNSD to exist for an ioctl call.
  792. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  793. #include <linux/sockios.h>
  794. #ifndef SIOCOUTQNSD
  795. #error
  796. #endif
  797. ])], have_siocoutqnsd=yes, have_siocoutqnsd=no)
  798. if test "x$have_siocoutqnsd" = "xyes"; then
  799. if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then
  800. if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then
  801. have_kist_support=yes
  802. fi
  803. fi
  804. fi
  805. ])
  806. dnl Now, trigger the check.
  807. CHECK_KIST_SUPPORT
  808. AS_IF([test "x$have_kist_support" = "xyes"],
  809. [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported
  810. on this system])],
  811. [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])])
  812. LIBS="$save_LIBS"
  813. LDFLAGS="$save_LDFLAGS"
  814. CPPFLAGS="$save_CPPFLAGS"
  815. dnl ------------------------------------------------------
  816. dnl Where do you live, zlib? And how do we call you?
  817. tor_zlib_pkg_redhat="zlib"
  818. tor_zlib_pkg_debian="zlib1g"
  819. tor_zlib_devpkg_redhat="zlib-devel"
  820. tor_zlib_devpkg_debian="zlib1g-dev"
  821. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  822. [#include <zlib.h>],
  823. [const char * zlibVersion(void);],
  824. [zlibVersion();], [--with-zlib-dir],
  825. [/opt/zlib])
  826. if test "$enable_static_zlib" = "yes"; then
  827. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  828. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  829. using --enable-static-zlib")
  830. else
  831. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  832. fi
  833. else
  834. TOR_ZLIB_LIBS="-lz"
  835. fi
  836. AC_SUBST(TOR_ZLIB_LIBS)
  837. dnl ------------------------------------------------------
  838. dnl Where we do we find lzma?
  839. AC_ARG_ENABLE(lzma,
  840. AS_HELP_STRING(--enable-lzma, [enable support for the LZMA compression scheme.]),
  841. [case "${enableval}" in
  842. "yes") lzma=true ;;
  843. "no") lzma=false ;;
  844. * ) AC_MSG_ERROR(bad value for --enable-lzma) ;;
  845. esac], [lzma=auto])
  846. if test "x$enable_lzma" = "xno"; then
  847. have_lzma=no;
  848. else
  849. PKG_CHECK_MODULES([LZMA],
  850. [liblzma],
  851. have_lzma=yes,
  852. have_lzma=no)
  853. if test "x$have_lzma" = "xno" ; then
  854. AC_MSG_WARN([Unable to find liblzma.])
  855. fi
  856. fi
  857. if test "x$have_lzma" = "xyes"; then
  858. AC_DEFINE(HAVE_LZMA,1,[Have LZMA])
  859. TOR_LZMA_CFLAGS="${LZMA_CFLAGS}"
  860. TOR_LZMA_LIBS="${LZMA_LIBS}"
  861. fi
  862. AC_SUBST(TOR_LZMA_CFLAGS)
  863. AC_SUBST(TOR_LZMA_LIBS)
  864. dnl ------------------------------------------------------
  865. dnl Where we do we find zstd?
  866. AC_ARG_ENABLE(zstd,
  867. AS_HELP_STRING(--enable-zstd, [enable support for the Zstandard compression scheme.]),
  868. [case "${enableval}" in
  869. "yes") zstd=true ;;
  870. "no") zstd=false ;;
  871. * ) AC_MSG_ERROR(bad value for --enable-zstd) ;;
  872. esac], [zstd=auto])
  873. if test "x$enable_zstd" = "xno"; then
  874. have_zstd=no;
  875. else
  876. PKG_CHECK_MODULES([ZSTD],
  877. [libzstd >= 1.1],
  878. have_zstd=yes,
  879. have_zstd=no)
  880. if test "x$have_zstd" = "xno" ; then
  881. AC_MSG_WARN([Unable to find libzstd.])
  882. fi
  883. fi
  884. if test "x$have_zstd" = "xyes"; then
  885. AC_DEFINE(HAVE_ZSTD,1,[Have Zstd])
  886. TOR_ZSTD_CFLAGS="${ZSTD_CFLAGS}"
  887. TOR_ZSTD_LIBS="${ZSTD_LIBS}"
  888. dnl now check for zstd functions
  889. save_LIBS="$LIBS"
  890. save_CFLAGS="$CFLAGS"
  891. LIBS="$LIBS $ZSTD_LIBS"
  892. CFLAGS="$CFLAGS $ZSTD_CFLAGS"
  893. AC_CHECK_FUNCS(ZSTD_estimateCStreamSize \
  894. ZSTD_estimateDCtxSize)
  895. LIBS="$save_LIBS"
  896. CFLAGS="$save_CFLAGS"
  897. fi
  898. AC_SUBST(TOR_ZSTD_CFLAGS)
  899. AC_SUBST(TOR_ZSTD_LIBS)
  900. dnl ----------------------------------------------------------------------
  901. dnl Check if libcap is available for capabilities.
  902. tor_cap_pkg_debian="libcap2"
  903. tor_cap_pkg_redhat="libcap"
  904. tor_cap_devpkg_debian="libcap-dev"
  905. tor_cap_devpkg_redhat="libcap-devel"
  906. AC_CHECK_LIB([cap], [cap_init], [],
  907. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  908. )
  909. AC_CHECK_FUNCS(cap_set_proc)
  910. dnl ---------------------------------------------------------------------
  911. dnl Now that we know about our major libraries, we can check for compiler
  912. dnl and linker hardening options. We need to do this with the libraries known,
  913. dnl since sometimes the linker will like an option but not be willing to
  914. dnl use it with a build of a library.
  915. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  916. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_LIB_USERENV $TOR_CAP_LIBS"
  917. CFLAGS_FTRAPV=
  918. CFLAGS_FWRAPV=
  919. CFLAGS_ASAN=
  920. CFLAGS_UBSAN=
  921. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  922. #if !defined(__clang__)
  923. #error
  924. #endif])], have_clang=yes, have_clang=no)
  925. if test "x$enable_gcc_hardening" != "xno"; then
  926. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  927. if test "x$have_clang" = "xyes"; then
  928. TOR_CHECK_CFLAGS(-Qunused-arguments)
  929. fi
  930. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  931. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  932. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  933. m4_ifdef([AS_VAR_IF],[
  934. AS_VAR_IF(can_compile, [yes],
  935. AS_VAR_IF(can_link, [yes],
  936. [],
  937. 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.)]))
  938. )])
  939. AS_VAR_POPDEF([can_link])
  940. AS_VAR_POPDEF([can_compile])
  941. TOR_CHECK_CFLAGS(-Wstack-protector)
  942. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  943. if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
  944. TOR_CHECK_CFLAGS(-fPIE)
  945. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  946. fi
  947. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  948. fi
  949. if test "$fragile_hardening" = "yes"; then
  950. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  951. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  952. 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.])
  953. fi
  954. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  955. AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
  956. fi
  957. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  958. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  959. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.*, and with Clang you need libclang_rt.ubsan*])
  960. fi
  961. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  962. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  963. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
  964. fi
  965. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  966. fi
  967. dnl Find the correct libraries to add in order to use the sanitizers.
  968. dnl
  969. dnl When building Rust, Cargo will run the linker with the -nodefaultlibs
  970. dnl option, which will prevent the compiler from linking the sanitizer
  971. dnl libraries it needs. We need to specify them manually.
  972. dnl
  973. dnl What's more, we need to specify them in a linker script rather than
  974. dnl from build.rs: these options aren't allowed in the cargo:rustc-flags
  975. dnl variable.
  976. RUST_LINKER_OPTIONS=""
  977. if test "x$have_clang" = "xyes"; then
  978. if test "x$CFLAGS_ASAN" != "x"; then
  979. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_ASAN"
  980. fi
  981. if test "x$CFLAGS_UBSAN" != "x"; then
  982. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_UBSAN"
  983. fi
  984. else
  985. if test "x$CFLAGS_ASAN" != "x"; then
  986. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lasan"
  987. fi
  988. if test "x$CFLAGS_UBSAN" != "x"; then
  989. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lubsan"
  990. fi
  991. fi
  992. AC_SUBST(RUST_LINKER_OPTIONS)
  993. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  994. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  995. mulodi_fixes_ftrapv=no
  996. if test "$have_clang" = "yes"; then
  997. saved_CFLAGS="$CFLAGS"
  998. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  999. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  1000. AC_LINK_IFELSE([
  1001. AC_LANG_SOURCE([[
  1002. #include <stdint.h>
  1003. #include <stdlib.h>
  1004. int main(int argc, char **argv)
  1005. {
  1006. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1007. * (int64_t)atoi(argv[3]);
  1008. return x == 9;
  1009. } ]])],
  1010. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  1011. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  1012. if test "$ftrapv_can_link" = "no"; then
  1013. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  1014. AC_LINK_IFELSE([
  1015. AC_LANG_SOURCE([[
  1016. #include <stdint.h>
  1017. #include <stdlib.h>
  1018. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  1019. *overflow=0;
  1020. return a;
  1021. }
  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. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  1029. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  1030. fi
  1031. CFLAGS="$saved_CFLAGS"
  1032. fi
  1033. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  1034. dnl These cflags add bunches of branches, and we haven't been able to
  1035. dnl persuade ourselves that they're suitable for code that needs to be
  1036. dnl constant time.
  1037. AC_SUBST(CFLAGS_BUGTRAP)
  1038. dnl These cflags are variant ones sutable for code that needs to be
  1039. dnl constant-time.
  1040. AC_SUBST(CFLAGS_CONSTTIME)
  1041. if test "x$enable_linker_hardening" != "xno"; then
  1042. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  1043. fi
  1044. # For backtrace support
  1045. TOR_CHECK_LDFLAGS(-rdynamic)
  1046. dnl ------------------------------------------------------
  1047. dnl Now see if we have a -fomit-frame-pointer compiler option.
  1048. saved_CFLAGS="$CFLAGS"
  1049. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  1050. F_OMIT_FRAME_POINTER=''
  1051. if test "$saved_CFLAGS" != "$CFLAGS"; then
  1052. if test "$fragile_hardening" = "yes"; then
  1053. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  1054. fi
  1055. fi
  1056. CFLAGS="$saved_CFLAGS"
  1057. AC_SUBST(F_OMIT_FRAME_POINTER)
  1058. dnl ------------------------------------------------------
  1059. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  1060. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  1061. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  1062. dnl code will work.
  1063. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  1064. dnl ============================================================
  1065. dnl Check for libseccomp
  1066. if test "x$enable_seccomp" != "xno"; then
  1067. AC_CHECK_HEADERS([seccomp.h])
  1068. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  1069. fi
  1070. dnl ============================================================
  1071. dnl Check for libscrypt
  1072. if test "x$enable_libscrypt" != "xno"; then
  1073. AC_CHECK_HEADERS([libscrypt.h])
  1074. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  1075. AC_CHECK_FUNCS([libscrypt_scrypt])
  1076. fi
  1077. dnl ============================================================
  1078. dnl We need an implementation of curve25519.
  1079. dnl set these defaults.
  1080. build_curve25519_donna=no
  1081. build_curve25519_donna_c64=no
  1082. use_curve25519_donna=no
  1083. use_curve25519_nacl=no
  1084. CURVE25519_LIBS=
  1085. dnl The best choice is using curve25519-donna-c64, but that requires
  1086. dnl that we
  1087. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  1088. tor_cv_can_use_curve25519_donna_c64,
  1089. [AC_RUN_IFELSE(
  1090. [AC_LANG_PROGRAM([dnl
  1091. #include <stdint.h>
  1092. typedef unsigned uint128_t __attribute__((mode(TI)));
  1093. int func(uint64_t a, uint64_t b) {
  1094. uint128_t c = ((uint128_t)a) * b;
  1095. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1096. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1097. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1098. (((uint64_t)(c))&0xffffffffL) == 0;
  1099. return ok;
  1100. }
  1101. ], [dnl
  1102. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1103. ((uint64_t)1234567890) << 24);
  1104. return !ok;
  1105. ])],
  1106. [tor_cv_can_use_curve25519_donna_c64=yes],
  1107. [tor_cv_can_use_curve25519_donna_c64=no],
  1108. [AC_LINK_IFELSE(
  1109. [AC_LANG_PROGRAM([dnl
  1110. #include <stdint.h>
  1111. typedef unsigned uint128_t __attribute__((mode(TI)));
  1112. int func(uint64_t a, uint64_t b) {
  1113. uint128_t c = ((uint128_t)a) * b;
  1114. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1115. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1116. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1117. (((uint64_t)(c))&0xffffffffL) == 0;
  1118. return ok;
  1119. }
  1120. ], [dnl
  1121. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1122. ((uint64_t)1234567890) << 24);
  1123. return !ok;
  1124. ])],
  1125. [tor_cv_can_use_curve25519_donna_c64=cross],
  1126. [tor_cv_can_use_curve25519_donna_c64=no])])])
  1127. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  1128. nacl/crypto_scalarmult_curve25519.h])
  1129. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  1130. tor_cv_can_use_curve25519_nacl,
  1131. [tor_saved_LIBS="$LIBS"
  1132. LIBS="$LIBS -lnacl"
  1133. AC_LINK_IFELSE(
  1134. [AC_LANG_PROGRAM([dnl
  1135. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  1136. #include <crypto_scalarmult_curve25519.h>
  1137. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  1138. #include <nacl/crypto_scalarmult_curve25519.h>
  1139. #endif
  1140. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  1141. #error Hey, this is the reference implementation! That's not fast.
  1142. #endif
  1143. ], [
  1144. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  1145. ])], [tor_cv_can_use_curve25519_nacl=yes],
  1146. [tor_cv_can_use_curve25519_nacl=no])
  1147. LIBS="$tor_saved_LIBS" ])
  1148. dnl Okay, now we need to figure out which one to actually use. Fall back
  1149. dnl to curve25519-donna.c
  1150. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  1151. build_curve25519_donna_c64=yes
  1152. use_curve25519_donna=yes
  1153. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  1154. use_curve25519_nacl=yes
  1155. CURVE25519_LIBS=-lnacl
  1156. else
  1157. build_curve25519_donna=yes
  1158. use_curve25519_donna=yes
  1159. fi
  1160. if test "x$use_curve25519_donna" = "xyes"; then
  1161. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  1162. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  1163. fi
  1164. if test "x$use_curve25519_nacl" = "xyes"; then
  1165. AC_DEFINE(USE_CURVE25519_NACL, 1,
  1166. [Defined if we should use a curve25519 from nacl])
  1167. fi
  1168. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  1169. test "x$build_curve25519_donna" = "xyes")
  1170. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  1171. test "x$build_curve25519_donna_c64" = "xyes")
  1172. AC_SUBST(CURVE25519_LIBS)
  1173. dnl Make sure to enable support for large off_t if available.
  1174. AC_SYS_LARGEFILE
  1175. AC_CHECK_HEADERS([errno.h \
  1176. fcntl.h \
  1177. signal.h \
  1178. string.h \
  1179. sys/capability.h \
  1180. sys/fcntl.h \
  1181. sys/stat.h \
  1182. sys/time.h \
  1183. sys/types.h \
  1184. time.h \
  1185. unistd.h \
  1186. arpa/inet.h \
  1187. crt_externs.h \
  1188. execinfo.h \
  1189. gnu/libc-version.h \
  1190. grp.h \
  1191. ifaddrs.h \
  1192. inttypes.h \
  1193. limits.h \
  1194. linux/types.h \
  1195. machine/limits.h \
  1196. malloc.h \
  1197. malloc/malloc.h \
  1198. malloc_np.h \
  1199. netdb.h \
  1200. netinet/in.h \
  1201. netinet/in6.h \
  1202. pwd.h \
  1203. readpassphrase.h \
  1204. stdint.h \
  1205. stdatomic.h \
  1206. sys/eventfd.h \
  1207. sys/file.h \
  1208. sys/ioctl.h \
  1209. sys/limits.h \
  1210. sys/mman.h \
  1211. sys/param.h \
  1212. sys/prctl.h \
  1213. sys/random.h \
  1214. sys/resource.h \
  1215. sys/select.h \
  1216. sys/socket.h \
  1217. sys/statvfs.h \
  1218. sys/syscall.h \
  1219. sys/sysctl.h \
  1220. sys/syslimits.h \
  1221. sys/time.h \
  1222. sys/types.h \
  1223. sys/un.h \
  1224. sys/utime.h \
  1225. sys/wait.h \
  1226. syslog.h \
  1227. utime.h])
  1228. AC_CHECK_HEADERS(sys/param.h)
  1229. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  1230. [#ifdef HAVE_SYS_TYPES_H
  1231. #include <sys/types.h>
  1232. #endif
  1233. #ifdef HAVE_SYS_SOCKET_H
  1234. #include <sys/socket.h>
  1235. #endif])
  1236. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  1237. [#ifdef HAVE_SYS_TYPES_H
  1238. #include <sys/types.h>
  1239. #endif
  1240. #ifdef HAVE_SYS_SOCKET_H
  1241. #include <sys/socket.h>
  1242. #endif
  1243. #ifdef HAVE_NET_IF_H
  1244. #include <net/if.h>
  1245. #endif
  1246. #ifdef HAVE_NETINET_IN_H
  1247. #include <netinet/in.h>
  1248. #endif])
  1249. AC_CHECK_HEADERS(linux/if.h,[],[],
  1250. [
  1251. #ifdef HAVE_SYS_SOCKET_H
  1252. #include <sys/socket.h>
  1253. #endif
  1254. ])
  1255. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  1256. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  1257. [#ifdef HAVE_SYS_TYPES_H
  1258. #include <sys/types.h>
  1259. #endif
  1260. #ifdef HAVE_SYS_SOCKET_H
  1261. #include <sys/socket.h>
  1262. #endif
  1263. #ifdef HAVE_LIMITS_H
  1264. #include <limits.h>
  1265. #endif
  1266. #ifdef HAVE_LINUX_TYPES_H
  1267. #include <linux/types.h>
  1268. #endif
  1269. #ifdef HAVE_NETINET_IN6_H
  1270. #include <netinet/in6.h>
  1271. #endif
  1272. #ifdef HAVE_NETINET_IN_H
  1273. #include <netinet/in.h>
  1274. #endif])
  1275. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  1276. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  1277. [#ifdef HAVE_SYS_TYPES_H
  1278. #include <sys/types.h>
  1279. #endif
  1280. #ifdef HAVE_SYS_SOCKET_H
  1281. #include <sys/socket.h>
  1282. #endif
  1283. #ifdef HAVE_LIMITS_H
  1284. #include <limits.h>
  1285. #endif
  1286. #ifdef HAVE_LINUX_TYPES_H
  1287. #include <linux/types.h>
  1288. #endif
  1289. #ifdef HAVE_NETINET_IN6_H
  1290. #include <netinet/in6.h>
  1291. #endif
  1292. #ifdef HAVE_NETINET_IN_H
  1293. #include <netinet/in.h>
  1294. #endif
  1295. #ifdef HAVE_LINUX_IF_H
  1296. #include <linux/if.h>
  1297. #endif])
  1298. transparent_ok=0
  1299. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  1300. transparent_ok=1
  1301. fi
  1302. if test "x$linux_netfilter_ipv4" = "x1"; then
  1303. transparent_ok=1
  1304. fi
  1305. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  1306. transparent_ok=1
  1307. fi
  1308. if test "x$transparent_ok" = "x1"; then
  1309. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  1310. else
  1311. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  1312. fi
  1313. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1314. [#ifdef HAVE_SYS_TYPES_H
  1315. #include <sys/types.h>
  1316. #endif
  1317. #ifdef HAVE_SYS_TIME_H
  1318. #include <sys/time.h>
  1319. #endif])
  1320. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  1321. dnl Watch out.
  1322. AC_CHECK_SIZEOF(int8_t)
  1323. AC_CHECK_SIZEOF(int16_t)
  1324. AC_CHECK_SIZEOF(int32_t)
  1325. AC_CHECK_SIZEOF(int64_t)
  1326. AC_CHECK_SIZEOF(uint8_t)
  1327. AC_CHECK_SIZEOF(uint16_t)
  1328. AC_CHECK_SIZEOF(uint32_t)
  1329. AC_CHECK_SIZEOF(uint64_t)
  1330. AC_CHECK_SIZEOF(intptr_t)
  1331. AC_CHECK_SIZEOF(uintptr_t)
  1332. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  1333. AC_CHECK_SIZEOF(char)
  1334. AC_CHECK_SIZEOF(short)
  1335. AC_CHECK_SIZEOF(int)
  1336. AC_CHECK_SIZEOF(long)
  1337. AC_CHECK_SIZEOF(long long)
  1338. AC_CHECK_SIZEOF(__int64)
  1339. AC_CHECK_SIZEOF(void *)
  1340. AC_CHECK_SIZEOF(time_t)
  1341. AC_CHECK_SIZEOF(size_t)
  1342. AC_CHECK_SIZEOF(pid_t)
  1343. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1344. AC_PC_FROM_UCONTEXT([:])
  1345. dnl used to include sockaddr_storage, but everybody has that.
  1346. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1347. [#ifdef HAVE_SYS_TYPES_H
  1348. #include <sys/types.h>
  1349. #endif
  1350. #ifdef HAVE_NETINET_IN_H
  1351. #include <netinet/in.h>
  1352. #endif
  1353. #ifdef HAVE_NETINET_IN6_H
  1354. #include <netinet/in6.h>
  1355. #endif
  1356. #ifdef HAVE_SYS_SOCKET_H
  1357. #include <sys/socket.h>
  1358. #endif
  1359. #ifdef _WIN32
  1360. #define _WIN32_WINNT 0x0501
  1361. #define WIN32_LEAN_AND_MEAN
  1362. #include <winsock2.h>
  1363. #include <ws2tcpip.h>
  1364. #endif
  1365. ])
  1366. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1367. [#ifdef HAVE_SYS_TYPES_H
  1368. #include <sys/types.h>
  1369. #endif
  1370. #ifdef HAVE_NETINET_IN_H
  1371. #include <netinet/in.h>
  1372. #endif
  1373. #ifdef HAVE_NETINET_IN6_H
  1374. #include <netinet/in6.h>
  1375. #endif
  1376. #ifdef HAVE_SYS_SOCKET_H
  1377. #include <sys/socket.h>
  1378. #endif
  1379. #ifdef _WIN32
  1380. #define _WIN32_WINNT 0x0501
  1381. #define WIN32_LEAN_AND_MEAN
  1382. #include <winsock2.h>
  1383. #include <ws2tcpip.h>
  1384. #endif
  1385. ])
  1386. AC_CHECK_TYPES([rlim_t], , ,
  1387. [#ifdef HAVE_SYS_TYPES_H
  1388. #include <sys/types.h>
  1389. #endif
  1390. #ifdef HAVE_SYS_TIME_H
  1391. #include <sys/time.h>
  1392. #endif
  1393. #ifdef HAVE_SYS_RESOURCE_H
  1394. #include <sys/resource.h>
  1395. #endif
  1396. ])
  1397. AX_CHECK_SIGN([time_t],
  1398. [ : ],
  1399. [ : ], [
  1400. #ifdef HAVE_SYS_TYPES_H
  1401. #include <sys/types.h>
  1402. #endif
  1403. #ifdef HAVE_SYS_TIME_H
  1404. #include <sys/time.h>
  1405. #endif
  1406. #ifdef HAVE_TIME_H
  1407. #include <time.h>
  1408. #endif
  1409. ])
  1410. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1411. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1412. fi
  1413. AX_CHECK_SIGN([size_t],
  1414. [ tor_cv_size_t_signed=yes ],
  1415. [ tor_cv_size_t_signed=no ], [
  1416. #ifdef HAVE_SYS_TYPES_H
  1417. #include <sys/types.h>
  1418. #endif
  1419. ])
  1420. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1421. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1422. fi
  1423. AX_CHECK_SIGN([enum always],
  1424. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1425. [ : ], [
  1426. enum always { AAA, BBB, CCC };
  1427. ])
  1428. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1429. #ifdef HAVE_SYS_SOCKET_H
  1430. #include <sys/socket.h>
  1431. #endif
  1432. ])
  1433. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1434. AC_CHECK_SIZEOF(cell_t)
  1435. # Now make sure that NULL can be represented as zero bytes.
  1436. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1437. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1438. [[#include <stdlib.h>
  1439. #include <string.h>
  1440. #include <stdio.h>
  1441. #ifdef HAVE_STDDEF_H
  1442. #include <stddef.h>
  1443. #endif
  1444. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1445. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1446. [tor_cv_null_is_zero=yes],
  1447. [tor_cv_null_is_zero=no],
  1448. [tor_cv_null_is_zero=cross])])
  1449. if test "$tor_cv_null_is_zero" = "cross"; then
  1450. # Cross-compiling; let's hope that the target isn't raving mad.
  1451. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1452. fi
  1453. if test "$tor_cv_null_is_zero" != "no"; then
  1454. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1455. [Define to 1 iff memset(0) sets pointers to NULL])
  1456. fi
  1457. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1458. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1459. [[#include <stdlib.h>
  1460. #include <string.h>
  1461. #include <stdio.h>
  1462. #ifdef HAVE_STDDEF_H
  1463. #include <stddef.h>
  1464. #endif
  1465. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1466. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1467. [tor_cv_dbl0_is_zero=yes],
  1468. [tor_cv_dbl0_is_zero=no],
  1469. [tor_cv_dbl0_is_zero=cross])])
  1470. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1471. # Cross-compiling; let's hope that the target isn't raving mad.
  1472. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1473. fi
  1474. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1475. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1476. [Define to 1 iff memset(0) sets doubles to 0.0])
  1477. fi
  1478. # And what happens when we malloc zero?
  1479. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1480. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1481. [[#include <stdlib.h>
  1482. #include <string.h>
  1483. #include <stdio.h>
  1484. #ifdef HAVE_STDDEF_H
  1485. #include <stddef.h>
  1486. #endif
  1487. int main () { return malloc(0)?0:1; }]])],
  1488. [tor_cv_malloc_zero_works=yes],
  1489. [tor_cv_malloc_zero_works=no],
  1490. [tor_cv_malloc_zero_works=cross])])
  1491. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1492. # Cross-compiling; let's hope that the target isn't raving mad.
  1493. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1494. fi
  1495. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1496. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1497. [Define to 1 iff malloc(0) returns a pointer])
  1498. fi
  1499. # whether we seem to be in a 2s-complement world.
  1500. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1501. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1502. [[int main () { int problem = ((-99) != (~99)+1);
  1503. return problem ? 1 : 0; }]])],
  1504. [tor_cv_twos_complement=yes],
  1505. [tor_cv_twos_complement=no],
  1506. [tor_cv_twos_complement=cross])])
  1507. if test "$tor_cv_twos_complement" = "cross"; then
  1508. # Cross-compiling; let's hope that the target isn't raving mad.
  1509. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1510. fi
  1511. if test "$tor_cv_twos_complement" != "no"; then
  1512. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1513. [Define to 1 iff we represent negative integers with
  1514. two's complement])
  1515. fi
  1516. # What does shifting a negative value do?
  1517. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1518. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1519. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1520. [tor_cv_sign_extend=yes],
  1521. [tor_cv_sign_extend=no],
  1522. [tor_cv_sign_extend=cross])])
  1523. if test "$tor_cv_sign_extend" = "cross"; then
  1524. # Cross-compiling; let's hope that the target isn't raving mad.
  1525. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1526. fi
  1527. if test "$tor_cv_sign_extend" != "no"; then
  1528. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1529. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1530. fi
  1531. # Is uint8_t the same type as unsigned char?
  1532. AC_CACHE_CHECK([whether uint8_t is the same type as unsigned char], tor_cv_uint8_uchar,
  1533. [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1534. #include <stdint.h>
  1535. extern uint8_t c;
  1536. unsigned char c;]])],
  1537. [tor_cv_uint8_uchar=yes],
  1538. [tor_cv_uint8_uchar=no],
  1539. [tor_cv_uint8_uchar=cross])])
  1540. if test "$tor_cv_uint8_uchar" = "cross"; then
  1541. AC_MSG_NOTICE([Cross-compiling: we'll assume that uint8_t is the same type as unsigned char])
  1542. fi
  1543. if test "$tor_cv_uint8_uchar" = "no"; then
  1544. AC_MSG_ERROR([We assume that uint8_t is the same type as unsigned char, but your compiler disagrees.])
  1545. fi
  1546. AC_ARG_WITH(tcmalloc,
  1547. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
  1548. [ tcmalloc=yes ], [ tcmalloc=no ])
  1549. if test "x$tcmalloc" = "xyes"; then
  1550. LDFLAGS="-ltcmalloc $LDFLAGS"
  1551. fi
  1552. using_custom_malloc=no
  1553. if test "x$enable_openbsd_malloc" = "xyes"; then
  1554. using_custom_malloc=yes
  1555. fi
  1556. if test "x$tcmalloc" = "xyes"; then
  1557. using_custom_malloc=yes
  1558. fi
  1559. if test "$using_custom_malloc" = "no"; then
  1560. AC_CHECK_FUNCS(mallinfo)
  1561. fi
  1562. # By default, we're going to assume we don't have mlockall()
  1563. # bionic and other platforms have various broken mlockall subsystems.
  1564. # Some systems don't have a working mlockall, some aren't linkable,
  1565. # and some have it but don't declare it.
  1566. AC_CHECK_FUNCS(mlockall)
  1567. AC_CHECK_DECLS([mlockall], , , [
  1568. #ifdef HAVE_SYS_MMAN_H
  1569. #include <sys/mman.h>
  1570. #endif])
  1571. # Allow user to specify an alternate syslog facility
  1572. AC_ARG_WITH(syslog-facility,
  1573. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1574. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1575. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1576. AC_SUBST(LOGFACILITY)
  1577. # Check if we have getresuid and getresgid
  1578. AC_CHECK_FUNCS(getresuid getresgid)
  1579. # Check for gethostbyname_r in all its glorious incompatible versions.
  1580. # (This logic is based on that in Python's configure.in)
  1581. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1582. [Define this if you have any gethostbyname_r()])
  1583. AC_CHECK_FUNC(gethostbyname_r, [
  1584. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1585. OLD_CFLAGS=$CFLAGS
  1586. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1587. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1588. #include <netdb.h>
  1589. ]], [[
  1590. char *cp1, *cp2;
  1591. struct hostent *h1, *h2;
  1592. int i1, i2;
  1593. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1594. ]])],[
  1595. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1596. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1597. [Define this if gethostbyname_r takes 6 arguments])
  1598. AC_MSG_RESULT(6)
  1599. ], [
  1600. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1601. #include <netdb.h>
  1602. ]], [[
  1603. char *cp1, *cp2;
  1604. struct hostent *h1;
  1605. int i1, i2;
  1606. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1607. ]])], [
  1608. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1609. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1610. [Define this if gethostbyname_r takes 5 arguments])
  1611. AC_MSG_RESULT(5)
  1612. ], [
  1613. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1614. #include <netdb.h>
  1615. ]], [[
  1616. char *cp1;
  1617. struct hostent *h1;
  1618. struct hostent_data hd;
  1619. (void) gethostbyname_r(cp1,h1,&hd);
  1620. ]])], [
  1621. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1622. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1623. [Define this if gethostbyname_r takes 3 arguments])
  1624. AC_MSG_RESULT(3)
  1625. ], [
  1626. AC_MSG_RESULT(0)
  1627. ])
  1628. ])
  1629. ])
  1630. CFLAGS=$OLD_CFLAGS
  1631. ])
  1632. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1633. tor_cv_have_func_macro,
  1634. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1635. #include <stdio.h>
  1636. int main(int c, char **v) { puts(__func__); }])],
  1637. tor_cv_have_func_macro=yes,
  1638. tor_cv_have_func_macro=no))
  1639. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1640. tor_cv_have_FUNC_macro,
  1641. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1642. #include <stdio.h>
  1643. int main(int c, char **v) { puts(__FUNC__); }])],
  1644. tor_cv_have_FUNC_macro=yes,
  1645. tor_cv_have_FUNC_macro=no))
  1646. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1647. tor_cv_have_FUNCTION_macro,
  1648. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1649. #include <stdio.h>
  1650. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1651. tor_cv_have_FUNCTION_macro=yes,
  1652. tor_cv_have_FUNCTION_macro=no))
  1653. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1654. tor_cv_have_environ_declared,
  1655. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1656. #ifdef HAVE_UNISTD_H
  1657. #include <unistd.h>
  1658. #endif
  1659. #include <stdlib.h>
  1660. int main(int c, char **v) { char **t = environ; }])],
  1661. tor_cv_have_environ_declared=yes,
  1662. tor_cv_have_environ_declared=no))
  1663. if test "$tor_cv_have_func_macro" = "yes"; then
  1664. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1665. fi
  1666. if test "$tor_cv_have_FUNC_macro" = "yes"; then
  1667. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1668. fi
  1669. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1670. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1671. [Defined if the compiler supports __FUNCTION__])
  1672. fi
  1673. if test "$tor_cv_have_environ_declared" = "yes"; then
  1674. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1675. [Defined if we have extern char **environ already declared])
  1676. fi
  1677. # $prefix stores the value of the --prefix command line option, or
  1678. # NONE if the option wasn't set. In the case that it wasn't set, make
  1679. # it be the default, so that we can use it to expand directories now.
  1680. if test "x$prefix" = "xNONE"; then
  1681. prefix=$ac_default_prefix
  1682. fi
  1683. # and similarly for $exec_prefix
  1684. if test "x$exec_prefix" = "xNONE"; then
  1685. exec_prefix=$prefix
  1686. fi
  1687. if test "x$BUILDDIR" = "x"; then
  1688. BUILDDIR=`pwd`
  1689. fi
  1690. AC_SUBST(BUILDDIR)
  1691. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1692. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1693. if test "x$SRCDIR" = "x"; then
  1694. SRCDIR=$(cd "$srcdir"; pwd)
  1695. fi
  1696. AH_TEMPLATE([SRCDIR],[tor's sourcedir directory])
  1697. AC_DEFINE_UNQUOTED(SRCDIR,"$SRCDIR")
  1698. if test "x$CONFDIR" = "x"; then
  1699. CONFDIR=`eval echo $sysconfdir/tor`
  1700. fi
  1701. AC_SUBST(CONFDIR)
  1702. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1703. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1704. BINDIR=`eval echo $bindir`
  1705. AC_SUBST(BINDIR)
  1706. LOCALSTATEDIR=`eval echo $localstatedir`
  1707. AC_SUBST(LOCALSTATEDIR)
  1708. if test "$bwin32" = "true"; then
  1709. # Test if the linker supports the --nxcompat and --dynamicbase options
  1710. # for Windows
  1711. save_LDFLAGS="$LDFLAGS"
  1712. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1713. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1714. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1715. [AC_MSG_RESULT([yes])]
  1716. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1717. [AC_MSG_RESULT([no])]
  1718. )
  1719. LDFLAGS="$save_LDFLAGS"
  1720. fi
  1721. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1722. # than autoconf's macros like.
  1723. if test "$GCC" = "yes"; then
  1724. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1725. # accident waiting to happen.
  1726. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1727. else
  1728. # Override optimization level for non-gcc compilers
  1729. CFLAGS="$CFLAGS -O"
  1730. enable_gcc_warnings=no
  1731. enable_gcc_warnings_advisory=no
  1732. fi
  1733. # Warnings implies advisory-warnings and -Werror.
  1734. if test "$enable_gcc_warnings" = "yes"; then
  1735. enable_gcc_warnings_advisory=yes
  1736. enable_fatal_warnings=yes
  1737. fi
  1738. # OS X Lion started deprecating the system openssl. Let's just disable
  1739. # all deprecation warnings on OS X. Also, to potentially make the binary
  1740. # a little smaller, let's enable dead_strip.
  1741. case "$host_os" in
  1742. darwin*)
  1743. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1744. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1745. esac
  1746. # Add some more warnings which we use in development but not in the
  1747. # released versions. (Some relevant gcc versions can't handle these.)
  1748. #
  1749. # Note that we have to do this near the end of the autoconf process, or
  1750. # else we may run into problems when these warnings hit on the testing C
  1751. # programs that autoconf wants to build.
  1752. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1753. case "$host" in
  1754. *-*-openbsd* | *-*-bitrig*)
  1755. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1756. # That's fine, except that the headers don't pass -Wredundant-decls.
  1757. # Therefore, let's disable -Wsystem-headers when we're building
  1758. # with maximal warnings on OpenBSD.
  1759. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1760. esac
  1761. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1762. # have it work better.
  1763. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1764. # This warning was added in gcc 4.3, but it appears to generate
  1765. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1766. #CFLAGS="$CFLAGS -Wlogical-op"
  1767. m4_foreach_w([warning_flag], [
  1768. -Waddress
  1769. -Waddress-of-array-temporary
  1770. -Waddress-of-temporary
  1771. -Wambiguous-macro
  1772. -Wanonymous-pack-parens
  1773. -Warc
  1774. -Warc-abi
  1775. -Warc-bridge-casts-disallowed-in-nonarc
  1776. -Warc-maybe-repeated-use-of-weak
  1777. -Warc-performSelector-leaks
  1778. -Warc-repeated-use-of-weak
  1779. -Warray-bounds
  1780. -Warray-bounds-pointer-arithmetic
  1781. -Wasm
  1782. -Wasm-operand-widths
  1783. -Watomic-properties
  1784. -Watomic-property-with-user-defined-accessor
  1785. -Wauto-import
  1786. -Wauto-storage-class
  1787. -Wauto-var-id
  1788. -Wavailability
  1789. -Wbackslash-newline-escape
  1790. -Wbad-array-new-length
  1791. -Wbind-to-temporary-copy
  1792. -Wbitfield-constant-conversion
  1793. -Wbool-conversion
  1794. -Wbool-conversions
  1795. -Wbuiltin-requires-header
  1796. -Wchar-align
  1797. -Wcompare-distinct-pointer-types
  1798. -Wcomplex-component-init
  1799. -Wconditional-type-mismatch
  1800. -Wconfig-macros
  1801. -Wconstant-conversion
  1802. -Wconstant-logical-operand
  1803. -Wconstexpr-not-const
  1804. -Wcustom-atomic-properties
  1805. -Wdangling-field
  1806. -Wdangling-initializer-list
  1807. -Wdate-time
  1808. -Wdelegating-ctor-cycles
  1809. -Wdeprecated-implementations
  1810. -Wdeprecated-register
  1811. -Wdirect-ivar-access
  1812. -Wdiscard-qual
  1813. -Wdistributed-object-modifiers
  1814. -Wdivision-by-zero
  1815. -Wdollar-in-identifier-extension
  1816. -Wdouble-promotion
  1817. -Wduplicate-decl-specifier
  1818. -Wduplicate-enum
  1819. -Wduplicate-method-arg
  1820. -Wduplicate-method-match
  1821. -Wduplicated-cond
  1822. -Wdynamic-class-memaccess
  1823. -Wembedded-directive
  1824. -Wempty-translation-unit
  1825. -Wenum-conversion
  1826. -Wexit-time-destructors
  1827. -Wexplicit-ownership-type
  1828. -Wextern-initializer
  1829. -Wextra
  1830. -Wextra-semi
  1831. -Wextra-tokens
  1832. -Wflexible-array-extensions
  1833. -Wfloat-conversion
  1834. -Wformat-non-iso
  1835. -Wfour-char-constants
  1836. -Wgcc-compat
  1837. -Wglobal-constructors
  1838. -Wgnu-array-member-paren-init
  1839. -Wgnu-designator
  1840. -Wgnu-static-float-init
  1841. -Wheader-guard
  1842. -Wheader-hygiene
  1843. -Widiomatic-parentheses
  1844. -Wignored-attributes
  1845. -Wimplicit-atomic-properties
  1846. -Wimplicit-conversion-floating-point-to-bool
  1847. -Wimplicit-exception-spec-mismatch
  1848. -Wimplicit-fallthrough
  1849. -Wimplicit-fallthrough-per-function
  1850. -Wimplicit-retain-self
  1851. -Wimport-preprocessor-directive-pedantic
  1852. -Wincompatible-library-redeclaration
  1853. -Wincompatible-pointer-types-discards-qualifiers
  1854. -Wincomplete-implementation
  1855. -Wincomplete-module
  1856. -Wincomplete-umbrella
  1857. -Winit-self
  1858. -Wint-conversions
  1859. -Wint-to-void-pointer-cast
  1860. -Winteger-overflow
  1861. -Winvalid-constexpr
  1862. -Winvalid-iboutlet
  1863. -Winvalid-noreturn
  1864. -Winvalid-pp-token
  1865. -Winvalid-source-encoding
  1866. -Winvalid-token-paste
  1867. -Wknr-promoted-parameter
  1868. -Wlarge-by-value-copy
  1869. -Wliteral-conversion
  1870. -Wliteral-range
  1871. -Wlocal-type-template-args
  1872. -Wlogical-op
  1873. -Wloop-analysis
  1874. -Wmain-return-type
  1875. -Wmalformed-warning-check
  1876. -Wmethod-signatures
  1877. -Wmicrosoft
  1878. -Wmicrosoft-exists
  1879. -Wmismatched-parameter-types
  1880. -Wmismatched-return-types
  1881. -Wmissing-field-initializers
  1882. -Wmissing-format-attribute
  1883. -Wmissing-noreturn
  1884. -Wmissing-selector-name
  1885. -Wmissing-sysroot
  1886. -Wmissing-variable-declarations
  1887. -Wmodule-conflict
  1888. -Wnested-anon-types
  1889. -Wnewline-eof
  1890. -Wnon-literal-null-conversion
  1891. -Wnon-pod-varargs
  1892. -Wnonportable-cfstrings
  1893. -Wnormalized=nfkc
  1894. -Wnull-arithmetic
  1895. -Wnull-character
  1896. -Wnull-conversion
  1897. -Wnull-dereference
  1898. -Wout-of-line-declaration
  1899. -Wover-aligned
  1900. -Woverlength-strings
  1901. -Woverride-init
  1902. -Woverriding-method-mismatch
  1903. -Wpointer-type-mismatch
  1904. -Wpredefined-identifier-outside-function
  1905. -Wprotocol-property-synthesis-ambiguity
  1906. -Wreadonly-iboutlet-property
  1907. -Wreadonly-setter-attrs
  1908. -Wreceiver-expr
  1909. -Wreceiver-forward-class
  1910. -Wreceiver-is-weak
  1911. -Wreinterpret-base-class
  1912. -Wrequires-super-attribute
  1913. -Wreserved-user-defined-literal
  1914. -Wreturn-stack-address
  1915. -Wsection
  1916. -Wselector-type-mismatch
  1917. -Wsentinel
  1918. -Wserialized-diagnostics
  1919. -Wshadow
  1920. -Wshift-count-negative
  1921. -Wshift-count-overflow
  1922. -Wshift-negative-value
  1923. -Wshift-overflow=2
  1924. -Wshift-sign-overflow
  1925. -Wshorten-64-to-32
  1926. -Wsizeof-array-argument
  1927. -Wsource-uses-openmp
  1928. -Wstatic-float-init
  1929. -Wstatic-in-inline
  1930. -Wstatic-local-in-inline
  1931. -Wstrict-overflow=1
  1932. -Wstring-compare
  1933. -Wstring-conversion
  1934. -Wstrlcpy-strlcat-size
  1935. -Wstrncat-size
  1936. -Wsuggest-attribute=format
  1937. -Wsuggest-attribute=noreturn
  1938. -Wsuper-class-method-mismatch
  1939. -Wswitch-bool
  1940. -Wsync-nand
  1941. -Wtautological-constant-out-of-range-compare
  1942. -Wtentative-definition-incomplete-type
  1943. -Wtrampolines
  1944. -Wtype-safety
  1945. -Wtypedef-redefinition
  1946. -Wtypename-missing
  1947. -Wundefined-inline
  1948. -Wundefined-internal
  1949. -Wundefined-reinterpret-cast
  1950. -Wunicode
  1951. -Wunicode-whitespace
  1952. -Wunknown-warning-option
  1953. -Wunnamed-type-template-args
  1954. -Wunneeded-member-function
  1955. -Wunsequenced
  1956. -Wunsupported-visibility
  1957. -Wunused-but-set-parameter
  1958. -Wunused-but-set-variable
  1959. -Wunused-command-line-argument
  1960. -Wunused-const-variable=2
  1961. -Wunused-exception-parameter
  1962. -Wunused-local-typedefs
  1963. -Wunused-member-function
  1964. -Wunused-sanitize-argument
  1965. -Wunused-volatile-lvalue
  1966. -Wuser-defined-literals
  1967. -Wvariadic-macros
  1968. -Wvector-conversion
  1969. -Wvector-conversions
  1970. -Wvexing-parse
  1971. -Wvisibility
  1972. -Wvla-extension
  1973. -Wzero-length-array
  1974. ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
  1975. dnl We should re-enable this in some later version. Clang doesn't
  1976. dnl mind, but it causes trouble with GCC.
  1977. dnl -Wstrict-overflow=2
  1978. dnl These seem to require annotations that we don't currently use,
  1979. dnl and they give false positives in our pthreads wrappers. (Clang 4)
  1980. dnl -Wthread-safety
  1981. dnl -Wthread-safety-analysis
  1982. dnl -Wthread-safety-attributes
  1983. dnl -Wthread-safety-beta
  1984. dnl -Wthread-safety-precise
  1985. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1986. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1987. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1988. CFLAGS="$CFLAGS -Wwrite-strings"
  1989. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1990. CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
  1991. CFLAGS="$CFLAGS -Wunused-parameter "
  1992. # These interfere with building main() { return 0; }, which autoconf
  1993. # likes to use as its default program.
  1994. CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
  1995. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  1996. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  1997. fi
  1998. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  1999. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  2000. fi
  2001. if test "x$enable_fatal_warnings" = "xyes"; then
  2002. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  2003. # default autoconf programs are full of errors.
  2004. CFLAGS="$CFLAGS -Werror"
  2005. fi
  2006. fi
  2007. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  2008. case "$host_os" in
  2009. darwin*)
  2010. AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
  2011. esac
  2012. fi
  2013. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  2014. AC_CONFIG_FILES([
  2015. Doxyfile
  2016. Makefile
  2017. config.rust
  2018. link_rust.sh
  2019. contrib/dist/suse/tor.sh
  2020. contrib/operator-tools/tor.logrotate
  2021. contrib/dist/tor.sh
  2022. contrib/dist/torctl
  2023. contrib/dist/tor.service
  2024. src/config/torrc.sample
  2025. src/config/torrc.minimal
  2026. src/rust/.cargo/config
  2027. scripts/maint/checkOptionDocs.pl
  2028. scripts/maint/updateVersions.pl
  2029. ])
  2030. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  2031. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  2032. for file in $regular_mans ; do
  2033. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  2034. echo "==================================";
  2035. echo;
  2036. echo "Building Tor has failed since manpages cannot be built.";
  2037. echo;
  2038. echo "You need asciidoc installed to be able to build the manpages.";
  2039. echo "To build without manpages, use the --disable-asciidoc argument";
  2040. echo "when calling configure.";
  2041. echo;
  2042. echo "==================================";
  2043. exit 1;
  2044. fi
  2045. done
  2046. fi
  2047. if test "$fragile_hardening" = "yes"; then
  2048. AC_MSG_WARN([
  2049. ============
  2050. Warning! Building Tor with --enable-fragile-hardening (also known as
  2051. --enable-expensive-hardening) makes some kinds of attacks harder, but makes
  2052. other kinds of attacks easier. A Tor instance build with this option will be
  2053. somewhat less vulnerable to remote code execution, arithmetic overflow, or
  2054. out-of-bounds read/writes... but at the cost of becoming more vulnerable to
  2055. denial of service attacks. For more information, see
  2056. https://trac.torproject.org/projects/tor/wiki/doc/TorFragileHardening
  2057. ============
  2058. ])
  2059. fi
  2060. AC_OUTPUT