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) 2007-2017, 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. if test -f "/etc/redhat-release"; then
  19. if test -f "/usr/kerberos/include"; then
  20. CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
  21. fi
  22. fi
  23. # Not a no-op; we want to make sure that CPPFLAGS is set before we use
  24. # the += operator on it in src/or/Makefile.am
  25. CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
  26. AC_ARG_ENABLE(openbsd-malloc,
  27. AS_HELP_STRING(--enable-openbsd-malloc, [use malloc code from OpenBSD. Linux only]))
  28. AC_ARG_ENABLE(static-openssl,
  29. AS_HELP_STRING(--enable-static-openssl, [link against a static openssl library. Requires --with-openssl-dir]))
  30. AC_ARG_ENABLE(static-libevent,
  31. AS_HELP_STRING(--enable-static-libevent, [link against a static libevent library. Requires --with-libevent-dir]))
  32. AC_ARG_ENABLE(static-zlib,
  33. AS_HELP_STRING(--enable-static-zlib, [link against a static zlib library. Requires --with-zlib-dir]))
  34. AC_ARG_ENABLE(static-tor,
  35. AS_HELP_STRING(--enable-static-tor, [create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir]))
  36. AC_ARG_ENABLE(unittests,
  37. AS_HELP_STRING(--disable-unittests, [don't build unit tests for Tor. Risky!]))
  38. AC_ARG_ENABLE(coverage,
  39. AS_HELP_STRING(--enable-coverage, [enable coverage support in the unit-test build]))
  40. AC_ARG_ENABLE(asserts-in-tests,
  41. AS_HELP_STRING(--disable-asserts-in-tests, [disable tor_assert() calls in the unit tests, for branch coverage]))
  42. AC_ARG_ENABLE(system-torrc,
  43. AS_HELP_STRING(--disable-system-torrc, [don't look for a system-wide torrc file]))
  44. AC_ARG_ENABLE(libfuzzer,
  45. AS_HELP_STRING(--enable-libfuzzer, [build extra fuzzers based on 'libfuzzer']))
  46. AC_ARG_ENABLE(oss-fuzz,
  47. AS_HELP_STRING(--enable-oss-fuzz, [build extra fuzzers based on 'oss-fuzz' environment]))
  48. AC_ARG_ENABLE(memory-sentinels,
  49. AS_HELP_STRING(--disable-memory-sentinels, [disable code that tries to prevent some kinds of memory access bugs. For fuzzing only.]))
  50. AC_ARG_ENABLE(rust,
  51. AS_HELP_STRING(--enable-rust, [enable rust integration]))
  52. AC_ARG_ENABLE(cargo-online-mode,
  53. AS_HELP_STRING(--enable-cargo-online-mode, [Allow cargo to make network requests to fetch crates. For builds with rust only.]))
  54. AC_ARG_ENABLE(restart-debugging,
  55. AS_HELP_STRING(--enable-restart-debugging, [Build Tor with support for debugging in-process restart. Developers only.]))
  56. AC_ARG_ENABLE(zstd-advanced-apis,
  57. AS_HELP_STRING(--disable-zstd-advanced-apis, [Build without support for zstd's "static-only" APIs.]))
  58. if test "x$enable_coverage" != "xyes" -a "x$enable_asserts_in_tests" = "xno" ; then
  59. AC_MSG_ERROR([Can't disable assertions outside of coverage build])
  60. fi
  61. AM_CONDITIONAL(UNITTESTS_ENABLED, test "x$enable_unittests" != "xno")
  62. AM_CONDITIONAL(COVERAGE_ENABLED, test "x$enable_coverage" = "xyes")
  63. AM_CONDITIONAL(DISABLE_ASSERTS_IN_UNIT_TESTS, test "x$enable_asserts_in_tests" = "xno")
  64. AM_CONDITIONAL(LIBFUZZER_ENABLED, test "x$enable_libfuzzer" = "xyes")
  65. AM_CONDITIONAL(OSS_FUZZ_ENABLED, test "x$enable_oss_fuzz" = "xyes")
  66. AM_CONDITIONAL(USE_RUST, test "x$enable_rust" = "xyes")
  67. if test "$enable_static_tor" = "yes"; then
  68. enable_static_libevent="yes";
  69. enable_static_openssl="yes";
  70. enable_static_zlib="yes";
  71. CFLAGS="$CFLAGS -static"
  72. fi
  73. if test "$enable_system_torrc" = "no"; then
  74. AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
  75. [Defined if we're not going to look for a torrc in SYSCONF])
  76. fi
  77. if test "$enable_memory_sentinels" = "no"; then
  78. AC_DEFINE(DISABLE_MEMORY_SENTINELS, 1,
  79. [Defined if we're turning off memory safety code to look for bugs])
  80. fi
  81. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test "x$enable_openbsd_malloc" = "xyes")
  82. AC_ARG_ENABLE(asciidoc,
  83. AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
  84. [case "${enableval}" in
  85. "yes") asciidoc=true ;;
  86. "no") asciidoc=false ;;
  87. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  88. esac], [asciidoc=true])
  89. # systemd notify support
  90. AC_ARG_ENABLE(systemd,
  91. AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
  92. [case "${enableval}" in
  93. "yes") systemd=true ;;
  94. "no") systemd=false ;;
  95. * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
  96. esac], [systemd=auto])
  97. if test "$enable_restart_debugging" = "yes"; then
  98. AC_DEFINE(ENABLE_RESTART_DEBUGGING, 1,
  99. [Defined if we're building with support for in-process restart debugging.])
  100. fi
  101. if test "$enable_zstd_advanced_apis" != "no"; then
  102. AC_DEFINE(ENABLE_ZSTD_ADVANCED_APIS, 1,
  103. [Defined if we're going to try to use zstd's "static-only" APIs.])
  104. fi
  105. # systemd support
  106. if test "x$enable_systemd" = "xno"; then
  107. have_systemd=no;
  108. else
  109. PKG_CHECK_MODULES(SYSTEMD,
  110. [libsystemd-daemon],
  111. have_systemd=yes,
  112. have_systemd=no)
  113. if test "x$have_systemd" = "xno"; then
  114. AC_MSG_NOTICE([Okay, checking for systemd a different way...])
  115. PKG_CHECK_MODULES(SYSTEMD,
  116. [libsystemd],
  117. have_systemd=yes,
  118. have_systemd=no)
  119. fi
  120. fi
  121. if test "x$have_systemd" = "xyes"; then
  122. AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
  123. TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
  124. TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
  125. PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
  126. [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
  127. fi
  128. AC_SUBST(TOR_SYSTEMD_CFLAGS)
  129. AC_SUBST(TOR_SYSTEMD_LIBS)
  130. if test "x$enable_systemd" = "xyes" -a "x$have_systemd" != "xyes" ; then
  131. AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
  132. fi
  133. case "$host" in
  134. *-*-solaris* )
  135. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  136. ;;
  137. esac
  138. AC_ARG_ENABLE(gcc-warnings,
  139. AS_HELP_STRING(--enable-gcc-warnings, [deprecated alias for enable-fatal-warnings]))
  140. AC_ARG_ENABLE(fatal-warnings,
  141. AS_HELP_STRING(--enable-fatal-warnings, [tell the compiler to treat all warnings as errors.]))
  142. AC_ARG_ENABLE(gcc-warnings-advisory,
  143. AS_HELP_STRING(--disable-gcc-warnings-advisory, [disable the regular verbose warnings]))
  144. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  145. AC_ARG_ENABLE(gcc-hardening,
  146. AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
  147. dnl Deprecated --enable-expensive-hardening but keep it for now for backward compat.
  148. AC_ARG_ENABLE(expensive-hardening,
  149. AS_HELP_STRING(--enable-expensive-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  150. AC_ARG_ENABLE(fragile-hardening,
  151. AS_HELP_STRING(--enable-fragile-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  152. if test "x$enable_expensive_hardening" = "xyes" || test "x$enable_fragile_hardening" = "xyes"; then
  153. fragile_hardening="yes"
  154. AC_DEFINE(DEBUG_SMARTLIST, 1, [Enable smartlist debugging])
  155. fi
  156. dnl Linker hardening options
  157. dnl Currently these options are ELF specific - you can't use this with MacOSX
  158. AC_ARG_ENABLE(linker-hardening,
  159. AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
  160. AC_ARG_ENABLE(local-appdata,
  161. AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
  162. if test "$enable_local_appdata" = "yes"; then
  163. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  164. [Defined if we default to host local appdata paths on Windows])
  165. fi
  166. # Tor2web mode flag
  167. AC_ARG_ENABLE(tor2web-mode,
  168. AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
  169. [if test "x$enableval" = "xyes"; then
  170. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  171. fi])
  172. AC_ARG_ENABLE(tool-name-check,
  173. AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
  174. AC_ARG_ENABLE(seccomp,
  175. AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
  176. AC_ARG_ENABLE(libscrypt,
  177. AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
  178. dnl Enable event tracing which are transformed to debug log statement.
  179. AC_ARG_ENABLE(event-tracing-debug,
  180. AS_HELP_STRING(--enable-event-tracing-debug, [build with event tracing to debug log]))
  181. AM_CONDITIONAL([USE_EVENT_TRACING_DEBUG], [test "x$enable_event_tracing_debug" = "xyes"])
  182. if test x$enable_event_tracing_debug = xyes; then
  183. AC_DEFINE([USE_EVENT_TRACING_DEBUG], [1], [Tracing framework to log debug])
  184. AC_DEFINE([TOR_EVENT_TRACING_ENABLED], [1], [Compile the event tracing instrumentation])
  185. fi
  186. dnl Enable Android only features.
  187. AC_ARG_ENABLE(android,
  188. AS_HELP_STRING(--enable-android, [build with Android features enabled]))
  189. AM_CONDITIONAL([USE_ANDROID], [test "x$enable_android" = "xyes"])
  190. if test "x$enable_android" = "xyes"; then
  191. AC_DEFINE([USE_ANDROID], [1], [Compile with Android specific features enabled])
  192. dnl Check if the Android log library is available.
  193. AC_CHECK_HEADERS([android/log.h])
  194. AC_SEARCH_LIBS(__android_log_write, [log])
  195. fi
  196. dnl ---
  197. dnl Tor modules options. These options are namespaced with --disable-module-XXX
  198. dnl ---
  199. dnl All our modules.
  200. m4_define(MODULES, dirauth)
  201. dnl Directory Authority module.
  202. AC_ARG_ENABLE([module-dirauth],
  203. AS_HELP_STRING([--disable-module-dirauth],
  204. [Do not build tor with the dirauth module]),
  205. [], dnl Action if-given
  206. AC_DEFINE([HAVE_MODULE_DIRAUTH], [1],
  207. [Compile with Directory Authority feature support]))
  208. AM_CONDITIONAL(BUILD_MODULE_DIRAUTH, [test "x$enable_module_dirauth" != "xno"])
  209. dnl Helper variables.
  210. TOR_MODULES_ALL_ENABLED=
  211. AC_DEFUN([ADD_MODULE], [
  212. MODULE=m4_toupper($1)
  213. TOR_MODULES_ALL_ENABLED="${TOR_MODULES_ALL_ENABLED} -DHAVE_MODULE_${MODULE}=1"
  214. ])
  215. m4_foreach_w([module], MODULES, [ADD_MODULE([module])])
  216. AC_SUBST(TOR_MODULES_ALL_ENABLED)
  217. dnl check for the correct "ar" when cross-compiling.
  218. dnl (AM_PROG_AR was new in automake 1.11.2, which we do not yet require,
  219. dnl so kludge up a replacement for the case where it isn't there yet.)
  220. m4_ifdef([AM_PROG_AR],
  221. [AM_PROG_AR],
  222. [AN_MAKEVAR([AR], [AC_PROG_AR])
  223. AN_PROGRAM([ar], [AC_PROG_AR])
  224. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [:])])
  225. AC_PROG_AR])
  226. dnl Check whether the above macro has settled for a simply named tool even
  227. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  228. dnl because that will find any cc on the system, not only the cross-compiler,
  229. dnl and then verify that a binary built with this compiler runs on the
  230. dnl build system. It will then come to the false conclusion that we're not
  231. dnl cross-compiling.
  232. if test "x$enable_tool_name_check" != "xno"; then
  233. if test "x$ac_tool_warned" = "xyes"; then
  234. AC_MSG_ERROR([We are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  235. elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
  236. AC_MSG_ERROR([We think we are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  237. fi
  238. fi
  239. AC_PROG_CC
  240. AC_PROG_CPP
  241. AC_PROG_MAKE_SET
  242. AC_PROG_RANLIB
  243. AC_PROG_SED
  244. AC_ARG_VAR([PERL], [path to Perl binary])
  245. AC_CHECK_PROGS([PERL], [perl])
  246. AM_CONDITIONAL(USE_PERL, [test "x$ac_cv_prog_PERL" != "x"])
  247. dnl check for asciidoc and a2x
  248. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  249. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  250. AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
  251. AM_PROG_CC_C_O
  252. AC_PROG_CC_C99
  253. AC_ARG_VAR([PYTHON], [path to Python binary])
  254. AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
  255. if test "x$PYTHON" = "x"; then
  256. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  257. fi
  258. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  259. dnl List all external rust crates we depend on here. Include the version
  260. rust_crates=" \
  261. digest-0.7.2 \
  262. libc-0.2.39 \
  263. "
  264. AC_SUBST(rust_crates)
  265. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  266. AC_C_FLEXIBLE_ARRAY_MEMBER
  267. ], [
  268. dnl Maybe we've got an old autoconf...
  269. AC_CACHE_CHECK([for flexible array members],
  270. tor_cv_c_flexarray,
  271. [AC_COMPILE_IFELSE(
  272. AC_LANG_PROGRAM([
  273. struct abc { int a; char b[]; };
  274. ], [
  275. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  276. def->b[0] = 33;
  277. ]),
  278. [tor_cv_c_flexarray=yes],
  279. [tor_cv_c_flexarray=no])])
  280. if test "$tor_cv_flexarray" = "yes"; then
  281. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  282. else
  283. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  284. fi
  285. ])
  286. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  287. tor_cv_c_c99_decl,
  288. [AC_COMPILE_IFELSE(
  289. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  290. [tor_cv_c_c99_decl=yes],
  291. [tor_cv_c_c99_decl=no] )])
  292. if test "$tor_cv_c_c99_decl" != "yes"; then
  293. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  294. fi
  295. AC_CACHE_CHECK([for working C99 designated initializers],
  296. tor_cv_c_c99_designated_init,
  297. [AC_COMPILE_IFELSE(
  298. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  299. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  300. [tor_cv_c_c99_designated_init=yes],
  301. [tor_cv_c_c99_designated_init=no] )])
  302. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  303. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  304. fi
  305. TORUSER=_tor
  306. AC_ARG_WITH(tor-user,
  307. AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
  308. [
  309. TORUSER=$withval
  310. ]
  311. )
  312. AC_SUBST(TORUSER)
  313. TORGROUP=_tor
  314. AC_ARG_WITH(tor-group,
  315. AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
  316. [
  317. TORGROUP=$withval
  318. ]
  319. )
  320. AC_SUBST(TORGROUP)
  321. dnl If _WIN32 is defined and non-zero, we are building for win32
  322. AC_MSG_CHECKING([for win32])
  323. AC_RUN_IFELSE([AC_LANG_SOURCE([
  324. int main(int c, char **v) {
  325. #ifdef _WIN32
  326. #if _WIN32
  327. return 0;
  328. #else
  329. return 1;
  330. #endif
  331. #else
  332. return 2;
  333. #endif
  334. }])],
  335. bwin32=true; AC_MSG_RESULT([yes]),
  336. bwin32=false; AC_MSG_RESULT([no]),
  337. bwin32=cross; AC_MSG_RESULT([cross])
  338. )
  339. if test "$bwin32" = "cross"; then
  340. AC_MSG_CHECKING([for win32 (cross)])
  341. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  342. #ifdef _WIN32
  343. int main(int c, char **v) {return 0;}
  344. #else
  345. #error
  346. int main(int c, char **v) {return x(y);}
  347. #endif
  348. ])],
  349. bwin32=true; AC_MSG_RESULT([yes]),
  350. bwin32=false; AC_MSG_RESULT([no]))
  351. fi
  352. AH_BOTTOM([
  353. #ifdef _WIN32
  354. /* Defined to access windows functions and definitions for >=WinXP */
  355. # ifndef WINVER
  356. # define WINVER 0x0501
  357. # endif
  358. /* Defined to access _other_ windows functions and definitions for >=WinXP */
  359. # ifndef _WIN32_WINNT
  360. # define _WIN32_WINNT 0x0501
  361. # endif
  362. /* Defined to avoid including some windows headers as part of Windows.h */
  363. # ifndef WIN32_LEAN_AND_MEAN
  364. # define WIN32_LEAN_AND_MEAN 1
  365. # endif
  366. #endif
  367. ])
  368. AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
  369. AM_CONDITIONAL(BUILD_LIBTORRUNNER, test "x$bwin32" != "xtrue")
  370. dnl Enable C99 when compiling with MIPSpro
  371. AC_MSG_CHECKING([for MIPSpro compiler])
  372. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  373. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  374. #error
  375. return x(y);
  376. #endif
  377. ])],
  378. bmipspro=false; AC_MSG_RESULT(no),
  379. bmipspro=true; AC_MSG_RESULT(yes))
  380. if test "$bmipspro" = "true"; then
  381. CFLAGS="$CFLAGS -c99"
  382. fi
  383. AC_C_BIGENDIAN
  384. if test "x$enable_rust" = "xyes"; then
  385. AC_ARG_VAR([RUSTC], [path to the rustc binary])
  386. AC_CHECK_PROG([RUSTC], [rustc], [rustc],[no])
  387. if test "x$RUSTC" = "xno"; then
  388. AC_MSG_ERROR([rustc unavailable but rust integration requested.])
  389. fi
  390. AC_ARG_VAR([CARGO], [path to the cargo binary])
  391. AC_CHECK_PROG([CARGO], [cargo], [cargo],[no])
  392. if test "x$CARGO" = "xno"; then
  393. AC_MSG_ERROR([cargo unavailable but rust integration requested.])
  394. fi
  395. AC_DEFINE([HAVE_RUST], 1, [have Rust])
  396. if test "x$enable_fatal_warnings" = "xyes"; then
  397. RUST_WARN=
  398. else
  399. RUST_WARN=#
  400. fi
  401. if test "x$enable_cargo_online_mode" = "xyes"; then
  402. CARGO_ONLINE=
  403. RUST_DL=#
  404. else
  405. CARGO_ONLINE=--frozen
  406. RUST_DL=
  407. dnl When we're not allowed to touch the network, we need crate dependencies
  408. dnl locally available.
  409. AC_MSG_CHECKING([rust crate dependencies])
  410. AC_ARG_VAR([TOR_RUST_DEPENDENCIES], [path to directory with local crate mirror])
  411. if test "x$TOR_RUST_DEPENDENCIES" = "x"; then
  412. TOR_RUST_DEPENDENCIES="${srcdir}/src/ext/rust/crates"
  413. fi
  414. dnl Check whether the path exists before we try to cd into it.
  415. if test ! -d "$TOR_RUST_DEPENDENCIES"; then
  416. AC_MSG_ERROR([Rust dependency directory $TOR_RUST_DEPENDENCIES does not exist. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
  417. ERRORED=1
  418. fi
  419. dnl Make the path absolute, since we'll be using it from within a
  420. dnl subdirectory.
  421. TOR_RUST_DEPENDENCIES=$(cd "$TOR_RUST_DEPENDENCIES" ; pwd)
  422. for dep in $rust_crates; do
  423. if test ! -d "$TOR_RUST_DEPENDENCIES"/"$dep"; then
  424. 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.])
  425. ERRORED=1
  426. fi
  427. done
  428. if test "x$ERRORED" = "x"; then
  429. AC_MSG_RESULT([yes])
  430. fi
  431. fi
  432. dnl This is a workaround for #46797
  433. dnl (a.k.a https://github.com/rust-lang/rust/issues/46797 ). Once the
  434. dnl upstream bug is fixed, we can remove this workaround.
  435. case "$host_os" in
  436. darwin*)
  437. TOR_RUST_EXTRA_LIBS="-lresolv"
  438. ;;
  439. esac
  440. dnl For now both MSVC and MinGW rust libraries will output static libs with
  441. dnl the MSVC naming convention.
  442. if test "$bwin32" = "true"; then
  443. TOR_RUST_STATIC_NAME=tor_rust.lib
  444. else
  445. TOR_RUST_STATIC_NAME=libtor_rust.a
  446. fi
  447. AC_SUBST(TOR_RUST_STATIC_NAME)
  448. AC_SUBST(CARGO_ONLINE)
  449. AC_SUBST(RUST_WARN)
  450. AC_SUBST(RUST_DL)
  451. dnl Let's check the rustc version, too
  452. AC_MSG_CHECKING([rust version])
  453. RUSTC_VERSION=`$RUSTC --version`
  454. RUSTC_VERSION_MAJOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 1`
  455. RUSTC_VERSION_MINOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 2`
  456. if test "x$RUSTC_VERSION_MAJOR" = "x" -o "x$RUSTC_VERSION_MINOR" = "x"; then
  457. AC_MSG_ERROR([rustc version couldn't be identified])
  458. fi
  459. if test "$RUSTC_VERSION_MAJOR" -lt 2 -a "$RUSTC_VERSION_MINOR" -lt 14; then
  460. AC_MSG_ERROR([rustc must be at least version 1.14])
  461. fi
  462. AC_MSG_RESULT([$RUSTC_VERSION])
  463. fi
  464. AC_SUBST(TOR_RUST_EXTRA_LIBS)
  465. AC_SEARCH_LIBS(socket, [socket network])
  466. AC_SEARCH_LIBS(gethostbyname, [nsl])
  467. AC_SEARCH_LIBS(dlopen, [dl])
  468. AC_SEARCH_LIBS(inet_aton, [resolv])
  469. AC_SEARCH_LIBS(backtrace, [execinfo])
  470. saved_LIBS="$LIBS"
  471. AC_SEARCH_LIBS([clock_gettime], [rt])
  472. if test "$LIBS" != "$saved_LIBS"; then
  473. # Looks like we need -lrt for clock_gettime().
  474. have_rt=yes
  475. fi
  476. AC_SEARCH_LIBS(pthread_create, [pthread])
  477. AC_SEARCH_LIBS(pthread_detach, [pthread])
  478. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  479. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  480. AC_CHECK_FUNCS(
  481. _NSGetEnviron \
  482. RtlSecureZeroMemory \
  483. SecureZeroMemory \
  484. accept4 \
  485. backtrace \
  486. backtrace_symbols_fd \
  487. eventfd \
  488. explicit_bzero \
  489. timingsafe_memcmp \
  490. flock \
  491. ftime \
  492. get_current_dir_name \
  493. getaddrinfo \
  494. getifaddrs \
  495. getpass \
  496. getrlimit \
  497. gettimeofday \
  498. gmtime_r \
  499. gnu_get_libc_version \
  500. htonll \
  501. inet_aton \
  502. ioctl \
  503. issetugid \
  504. llround \
  505. localtime_r \
  506. lround \
  507. mach_approximate_time \
  508. memmem \
  509. memset_s \
  510. mmap \
  511. pipe \
  512. pipe2 \
  513. prctl \
  514. readpassphrase \
  515. rint \
  516. sigaction \
  517. socketpair \
  518. statvfs \
  519. strlcat \
  520. strlcpy \
  521. strnlen \
  522. strptime \
  523. strtok_r \
  524. strtoull \
  525. sysconf \
  526. sysctl \
  527. truncate \
  528. uname \
  529. usleep \
  530. vasprintf \
  531. _vscprintf
  532. )
  533. # Apple messed up when they added two functions functions in Sierra: they
  534. # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
  535. # checks. So we should only probe for those functions if we are sure that we
  536. # are not targeting OSX 10.11 or earlier.
  537. AC_MSG_CHECKING([for a pre-Sierra OSX build target])
  538. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  539. #ifdef __APPLE__
  540. # include <AvailabilityMacros.h>
  541. # ifndef MAC_OS_X_VERSION_10_12
  542. # define MAC_OS_X_VERSION_10_12 101200
  543. # endif
  544. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  545. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  546. # error "Running on Mac OSX 10.11 or earlier"
  547. # endif
  548. # endif
  549. #endif
  550. ]], [[]])],
  551. [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
  552. [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
  553. if test "$on_macos_pre_10_12" = "no"; then
  554. AC_CHECK_FUNCS(
  555. clock_gettime \
  556. getentropy \
  557. )
  558. fi
  559. if test "$bwin32" != "true"; then
  560. AC_CHECK_HEADERS(pthread.h)
  561. AC_CHECK_FUNCS(pthread_create)
  562. AC_CHECK_FUNCS(pthread_condattr_setclock)
  563. fi
  564. if test "$bwin32" = "true"; then
  565. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  566. #include <windows.h>
  567. #include <conio.h>
  568. #include <wchar.h>
  569. ])
  570. fi
  571. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  572. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  573. AC_MSG_CHECKING([whether free(NULL) works])
  574. AC_RUN_IFELSE([AC_LANG_PROGRAM([
  575. #include <stdlib.h>
  576. ], [
  577. char *p = NULL;
  578. free(p);
  579. ])],
  580. [free_null_ok=true; AC_MSG_RESULT(yes)],
  581. [free_null_ok=false; AC_MSG_RESULT(no)],
  582. [free_null_ok=cross; AC_MSG_RESULT(cross)])
  583. if test "$free_null_ok" = "false"; then
  584. AC_MSG_ERROR([Your libc implementation doesn't allow free(NULL), as required by C99.])
  585. fi
  586. dnl ------------------------------------------------------
  587. dnl Where do you live, libevent? And how do we call you?
  588. if test "$bwin32" = "true"; then
  589. TOR_LIB_WS32=-lws2_32
  590. TOR_LIB_IPHLPAPI=-liphlpapi
  591. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  592. # think it's actually necessary.
  593. TOR_LIB_GDI=-lgdi32
  594. TOR_LIB_USERENV=-luserenv
  595. else
  596. TOR_LIB_WS32=
  597. TOR_LIB_GDI=
  598. TOR_LIB_USERENV=
  599. fi
  600. AC_SUBST(TOR_LIB_WS32)
  601. AC_SUBST(TOR_LIB_GDI)
  602. AC_SUBST(TOR_LIB_IPHLPAPI)
  603. AC_SUBST(TOR_LIB_USERENV)
  604. tor_libevent_pkg_redhat="libevent"
  605. tor_libevent_pkg_debian="libevent-dev"
  606. tor_libevent_devpkg_redhat="libevent-devel"
  607. tor_libevent_devpkg_debian="libevent-dev"
  608. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  609. dnl linking for static builds.
  610. STATIC_LIBEVENT_FLAGS=""
  611. if test "$enable_static_libevent" = "yes"; then
  612. if test "$have_rt" = "yes"; then
  613. STATIC_LIBEVENT_FLAGS=" -lrt "
  614. fi
  615. fi
  616. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  617. #ifdef _WIN32
  618. #include <winsock2.h>
  619. #endif
  620. #include <sys/time.h>
  621. #include <sys/types.h>
  622. #include <event2/event.h>], [
  623. #ifdef _WIN32
  624. #include <winsock2.h>
  625. #endif
  626. struct event_base;
  627. struct event_base *event_base_new(void);
  628. void event_base_free(struct event_base *);],
  629. [
  630. #ifdef _WIN32
  631. {WSADATA d; WSAStartup(0x101,&d); }
  632. #endif
  633. event_base_free(event_base_new());
  634. ], [--with-libevent-dir], [/opt/libevent])
  635. dnl Determine the incantation needed to link libevent.
  636. save_LIBS="$LIBS"
  637. save_LDFLAGS="$LDFLAGS"
  638. save_CPPFLAGS="$CPPFLAGS"
  639. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  640. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  641. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  642. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  643. if test "$enable_static_libevent" = "yes"; then
  644. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  645. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  646. else
  647. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  648. fi
  649. else
  650. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  651. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  652. 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"))
  653. if test "$ac_cv_search_event_new" != "none required"; then
  654. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  655. fi
  656. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  657. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  658. fi
  659. else
  660. AC_MSG_ERROR("libevent2 is required but the headers could not be found")
  661. fi
  662. fi
  663. dnl Now check for particular libevent functions.
  664. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
  665. evutil_secure_rng_add_bytes \
  666. ])
  667. LIBS="$save_LIBS"
  668. LDFLAGS="$save_LDFLAGS"
  669. CPPFLAGS="$save_CPPFLAGS"
  670. dnl Check that libevent is at least at version 2.0.10, the first stable
  671. dnl release of its series
  672. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  673. AC_MSG_CHECKING([whether Libevent is new enough])
  674. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  675. #include <event2/event.h>
  676. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  677. #error
  678. int x = y(zz);
  679. #else
  680. int x = 1;
  681. #endif
  682. ])], [ AC_MSG_RESULT([yes]) ],
  683. [ AC_MSG_RESULT([no])
  684. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  685. LIBS="$save_LIBS"
  686. LDFLAGS="$save_LDFLAGS"
  687. CPPFLAGS="$save_CPPFLAGS"
  688. AC_SUBST(TOR_LIBEVENT_LIBS)
  689. dnl ------------------------------------------------------
  690. dnl Where do you live, libm?
  691. dnl On some platforms (Haiku/BeOS) the math library is
  692. dnl part of libroot. In which case don't link against lm
  693. TOR_LIB_MATH=""
  694. save_LIBS="$LIBS"
  695. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  696. if test "$ac_cv_search_pow" != "none required"; then
  697. TOR_LIB_MATH="$ac_cv_search_pow"
  698. fi
  699. LIBS="$save_LIBS"
  700. AC_SUBST(TOR_LIB_MATH)
  701. dnl ------------------------------------------------------
  702. dnl Where do you live, openssl? And how do we call you?
  703. tor_openssl_pkg_redhat="openssl"
  704. tor_openssl_pkg_debian="libssl-dev"
  705. tor_openssl_devpkg_redhat="openssl-devel"
  706. tor_openssl_devpkg_debian="libssl-dev"
  707. ALT_openssl_WITHVAL=""
  708. AC_ARG_WITH(ssl-dir,
  709. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  710. [
  711. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  712. ALT_openssl_WITHVAL="$withval"
  713. fi
  714. ])
  715. AC_MSG_NOTICE([Now, we'll look for OpenSSL >= 1.0.1])
  716. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI $TOR_LIB_WS32],
  717. [#include <openssl/ssl.h>
  718. char *getenv(const char *);],
  719. [struct ssl_cipher_st;
  720. unsigned SSL_CIPHER_get_id(const struct ssl_cipher_st *);
  721. char *getenv(const char *);],
  722. dnl This funny-looking test program calls getenv, so that the compiler
  723. dnl will neither make code that call SSL_CIPHER_get_id(NULL) [producing
  724. dnl a crash], nor optimize out the call to SSL_CIPHER_get_id().
  725. dnl We look for SSL_cipher_get_id() because it is present in
  726. dnl OpenSSL >=1.0.1, because it is not deprecated, and because Tor
  727. dnl depends on it.
  728. [if (getenv("THIS_SHOULDNT_BE_SET_X201803")) SSL_CIPHER_get_id((void *)0);], [],
  729. [/usr/local/opt/openssl /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /opt/openssl])
  730. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  731. if test "$enable_static_openssl" = "yes"; then
  732. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  733. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  734. else
  735. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  736. fi
  737. else
  738. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  739. fi
  740. AC_SUBST(TOR_OPENSSL_LIBS)
  741. dnl Now check for particular openssl functions.
  742. save_LIBS="$LIBS"
  743. save_LDFLAGS="$LDFLAGS"
  744. save_CPPFLAGS="$CPPFLAGS"
  745. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  746. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  747. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  748. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  749. #include <openssl/opensslv.h>
  750. #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
  751. #error "too old"
  752. #endif
  753. ]], [[]])],
  754. [ : ],
  755. [ 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.]) ])
  756. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  757. #include <openssl/opensslv.h>
  758. #include <openssl/evp.h>
  759. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  760. #error "no ECC"
  761. #endif
  762. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  763. #error "curves unavailable"
  764. #endif
  765. ]], [[]])],
  766. [ : ],
  767. [ 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.]) ])
  768. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  769. [#include <openssl/ssl.h>
  770. ])
  771. AC_CHECK_FUNCS([ \
  772. SSL_SESSION_get_master_key \
  773. SSL_get_server_random \
  774. SSL_get_client_ciphers \
  775. SSL_get_client_random \
  776. SSL_CIPHER_find \
  777. TLS_method
  778. ])
  779. dnl Check if OpenSSL has scrypt implementation.
  780. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  781. dnl Check if OpenSSL structures are opaque
  782. AC_CHECK_MEMBERS([SSL.state], , ,
  783. [#include <openssl/ssl.h>
  784. ])
  785. AC_CHECK_SIZEOF(SHA_CTX, , [AC_INCLUDES_DEFAULT()
  786. #include <openssl/sha.h>
  787. ])
  788. dnl Define the set of checks for KIST scheduler support.
  789. AC_DEFUN([CHECK_KIST_SUPPORT],[
  790. dnl KIST needs struct tcp_info and for certain members to exist.
  791. AC_CHECK_MEMBERS(
  792. [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss],
  793. , ,[[#include <netinet/tcp.h>]])
  794. dnl KIST needs SIOCOUTQNSD to exist for an ioctl call.
  795. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  796. #include <linux/sockios.h>
  797. #ifndef SIOCOUTQNSD
  798. #error
  799. #endif
  800. ])], have_siocoutqnsd=yes, have_siocoutqnsd=no)
  801. if test "x$have_siocoutqnsd" = "xyes"; then
  802. if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then
  803. if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then
  804. have_kist_support=yes
  805. fi
  806. fi
  807. fi
  808. ])
  809. dnl Now, trigger the check.
  810. CHECK_KIST_SUPPORT
  811. AS_IF([test "x$have_kist_support" = "xyes"],
  812. [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported
  813. on this system])],
  814. [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])])
  815. LIBS="$save_LIBS"
  816. LDFLAGS="$save_LDFLAGS"
  817. CPPFLAGS="$save_CPPFLAGS"
  818. dnl ------------------------------------------------------
  819. dnl Where do you live, zlib? And how do we call you?
  820. tor_zlib_pkg_redhat="zlib"
  821. tor_zlib_pkg_debian="zlib1g"
  822. tor_zlib_devpkg_redhat="zlib-devel"
  823. tor_zlib_devpkg_debian="zlib1g-dev"
  824. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  825. [#include <zlib.h>],
  826. [const char * zlibVersion(void);],
  827. [zlibVersion();], [--with-zlib-dir],
  828. [/opt/zlib])
  829. if test "$enable_static_zlib" = "yes"; then
  830. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  831. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  832. using --enable-static-zlib")
  833. else
  834. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  835. fi
  836. else
  837. TOR_ZLIB_LIBS="-lz"
  838. fi
  839. AC_SUBST(TOR_ZLIB_LIBS)
  840. dnl ------------------------------------------------------
  841. dnl Where we do we find lzma?
  842. AC_ARG_ENABLE(lzma,
  843. AS_HELP_STRING(--enable-lzma, [enable support for the LZMA compression scheme.]),
  844. [case "${enableval}" in
  845. "yes") lzma=true ;;
  846. "no") lzma=false ;;
  847. * ) AC_MSG_ERROR(bad value for --enable-lzma) ;;
  848. esac], [lzma=auto])
  849. if test "x$enable_lzma" = "xno"; then
  850. have_lzma=no;
  851. else
  852. PKG_CHECK_MODULES([LZMA],
  853. [liblzma],
  854. have_lzma=yes,
  855. have_lzma=no)
  856. if test "x$have_lzma" = "xno" ; then
  857. AC_MSG_WARN([Unable to find liblzma.])
  858. fi
  859. fi
  860. if test "x$have_lzma" = "xyes"; then
  861. AC_DEFINE(HAVE_LZMA,1,[Have LZMA])
  862. TOR_LZMA_CFLAGS="${LZMA_CFLAGS}"
  863. TOR_LZMA_LIBS="${LZMA_LIBS}"
  864. fi
  865. AC_SUBST(TOR_LZMA_CFLAGS)
  866. AC_SUBST(TOR_LZMA_LIBS)
  867. dnl ------------------------------------------------------
  868. dnl Where we do we find zstd?
  869. AC_ARG_ENABLE(zstd,
  870. AS_HELP_STRING(--enable-zstd, [enable support for the Zstandard compression scheme.]),
  871. [case "${enableval}" in
  872. "yes") zstd=true ;;
  873. "no") zstd=false ;;
  874. * ) AC_MSG_ERROR(bad value for --enable-zstd) ;;
  875. esac], [zstd=auto])
  876. if test "x$enable_zstd" = "xno"; then
  877. have_zstd=no;
  878. else
  879. PKG_CHECK_MODULES([ZSTD],
  880. [libzstd >= 1.1],
  881. have_zstd=yes,
  882. have_zstd=no)
  883. if test "x$have_zstd" = "xno" ; then
  884. AC_MSG_WARN([Unable to find libzstd.])
  885. fi
  886. fi
  887. if test "x$have_zstd" = "xyes"; then
  888. AC_DEFINE(HAVE_ZSTD,1,[Have Zstd])
  889. TOR_ZSTD_CFLAGS="${ZSTD_CFLAGS}"
  890. TOR_ZSTD_LIBS="${ZSTD_LIBS}"
  891. dnl now check for zstd functions
  892. save_LIBS="$LIBS"
  893. save_CFLAGS="$CFLAGS"
  894. LIBS="$LIBS $ZSTD_LIBS"
  895. CFLAGS="$CFLAGS $ZSTD_CFLAGS"
  896. AC_CHECK_FUNCS(ZSTD_estimateCStreamSize \
  897. ZSTD_estimateDCtxSize)
  898. LIBS="$save_LIBS"
  899. CFLAGS="$save_CFLAGS"
  900. fi
  901. AC_SUBST(TOR_ZSTD_CFLAGS)
  902. AC_SUBST(TOR_ZSTD_LIBS)
  903. dnl ----------------------------------------------------------------------
  904. dnl Check if libcap is available for capabilities.
  905. tor_cap_pkg_debian="libcap2"
  906. tor_cap_pkg_redhat="libcap"
  907. tor_cap_devpkg_debian="libcap-dev"
  908. tor_cap_devpkg_redhat="libcap-devel"
  909. AC_CHECK_LIB([cap], [cap_init], [],
  910. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  911. )
  912. AC_CHECK_FUNCS(cap_set_proc)
  913. dnl ---------------------------------------------------------------------
  914. dnl Now that we know about our major libraries, we can check for compiler
  915. dnl and linker hardening options. We need to do this with the libraries known,
  916. dnl since sometimes the linker will like an option but not be willing to
  917. dnl use it with a build of a library.
  918. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  919. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_LIB_USERENV $TOR_CAP_LIBS"
  920. CFLAGS_FTRAPV=
  921. CFLAGS_FWRAPV=
  922. CFLAGS_ASAN=
  923. CFLAGS_UBSAN=
  924. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  925. #if !defined(__clang__)
  926. #error
  927. #endif])], have_clang=yes, have_clang=no)
  928. if test "x$enable_gcc_hardening" != "xno"; then
  929. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  930. if test "x$have_clang" = "xyes"; then
  931. TOR_CHECK_CFLAGS(-Qunused-arguments)
  932. fi
  933. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  934. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  935. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  936. m4_ifdef([AS_VAR_IF],[
  937. AS_VAR_IF(can_compile, [yes],
  938. AS_VAR_IF(can_link, [yes],
  939. [],
  940. 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.)]))
  941. )])
  942. AS_VAR_POPDEF([can_link])
  943. AS_VAR_POPDEF([can_compile])
  944. TOR_CHECK_CFLAGS(-Wstack-protector)
  945. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  946. if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
  947. TOR_CHECK_CFLAGS(-fPIE)
  948. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  949. fi
  950. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  951. fi
  952. if test "$fragile_hardening" = "yes"; then
  953. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  954. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  955. 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.])
  956. fi
  957. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  958. AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
  959. fi
  960. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  961. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  962. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.*, and with Clang you need libclang_rt.ubsan*])
  963. fi
  964. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  965. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  966. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
  967. fi
  968. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  969. fi
  970. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  971. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  972. mulodi_fixes_ftrapv=no
  973. if test "$have_clang" = "yes"; then
  974. saved_CFLAGS="$CFLAGS"
  975. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  976. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  977. AC_LINK_IFELSE([
  978. AC_LANG_SOURCE([[
  979. #include <stdint.h>
  980. #include <stdlib.h>
  981. int main(int argc, char **argv)
  982. {
  983. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  984. * (int64_t)atoi(argv[3]);
  985. return x == 9;
  986. } ]])],
  987. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  988. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  989. if test "$ftrapv_can_link" = "no"; then
  990. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  991. AC_LINK_IFELSE([
  992. AC_LANG_SOURCE([[
  993. #include <stdint.h>
  994. #include <stdlib.h>
  995. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  996. *overflow=0;
  997. return a;
  998. }
  999. int main(int argc, char **argv)
  1000. {
  1001. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1002. * (int64_t)atoi(argv[3]);
  1003. return x == 9;
  1004. } ]])],
  1005. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  1006. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  1007. fi
  1008. CFLAGS="$saved_CFLAGS"
  1009. fi
  1010. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  1011. dnl These cflags add bunches of branches, and we haven't been able to
  1012. dnl persuade ourselves that they're suitable for code that needs to be
  1013. dnl constant time.
  1014. AC_SUBST(CFLAGS_BUGTRAP)
  1015. dnl These cflags are variant ones sutable for code that needs to be
  1016. dnl constant-time.
  1017. AC_SUBST(CFLAGS_CONSTTIME)
  1018. if test "x$enable_linker_hardening" != "xno"; then
  1019. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  1020. fi
  1021. # For backtrace support
  1022. TOR_CHECK_LDFLAGS(-rdynamic)
  1023. dnl ------------------------------------------------------
  1024. dnl Now see if we have a -fomit-frame-pointer compiler option.
  1025. saved_CFLAGS="$CFLAGS"
  1026. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  1027. F_OMIT_FRAME_POINTER=''
  1028. if test "$saved_CFLAGS" != "$CFLAGS"; then
  1029. if test "$fragile_hardening" = "yes"; then
  1030. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  1031. fi
  1032. fi
  1033. CFLAGS="$saved_CFLAGS"
  1034. AC_SUBST(F_OMIT_FRAME_POINTER)
  1035. dnl ------------------------------------------------------
  1036. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  1037. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  1038. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  1039. dnl code will work.
  1040. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  1041. dnl ============================================================
  1042. dnl Check for libseccomp
  1043. if test "x$enable_seccomp" != "xno"; then
  1044. AC_CHECK_HEADERS([seccomp.h])
  1045. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  1046. fi
  1047. dnl ============================================================
  1048. dnl Check for libscrypt
  1049. if test "x$enable_libscrypt" != "xno"; then
  1050. AC_CHECK_HEADERS([libscrypt.h])
  1051. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  1052. AC_CHECK_FUNCS([libscrypt_scrypt])
  1053. fi
  1054. dnl ============================================================
  1055. dnl We need an implementation of curve25519.
  1056. dnl set these defaults.
  1057. build_curve25519_donna=no
  1058. build_curve25519_donna_c64=no
  1059. use_curve25519_donna=no
  1060. use_curve25519_nacl=no
  1061. CURVE25519_LIBS=
  1062. dnl The best choice is using curve25519-donna-c64, but that requires
  1063. dnl that we
  1064. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  1065. tor_cv_can_use_curve25519_donna_c64,
  1066. [AC_RUN_IFELSE(
  1067. [AC_LANG_PROGRAM([dnl
  1068. #include <stdint.h>
  1069. typedef unsigned uint128_t __attribute__((mode(TI)));
  1070. int func(uint64_t a, uint64_t b) {
  1071. uint128_t c = ((uint128_t)a) * b;
  1072. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1073. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1074. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1075. (((uint64_t)(c))&0xffffffffL) == 0;
  1076. return ok;
  1077. }
  1078. ], [dnl
  1079. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1080. ((uint64_t)1234567890) << 24);
  1081. return !ok;
  1082. ])],
  1083. [tor_cv_can_use_curve25519_donna_c64=yes],
  1084. [tor_cv_can_use_curve25519_donna_c64=no],
  1085. [AC_LINK_IFELSE(
  1086. [AC_LANG_PROGRAM([dnl
  1087. #include <stdint.h>
  1088. typedef unsigned uint128_t __attribute__((mode(TI)));
  1089. int func(uint64_t a, uint64_t b) {
  1090. uint128_t c = ((uint128_t)a) * b;
  1091. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1092. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1093. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1094. (((uint64_t)(c))&0xffffffffL) == 0;
  1095. return ok;
  1096. }
  1097. ], [dnl
  1098. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1099. ((uint64_t)1234567890) << 24);
  1100. return !ok;
  1101. ])],
  1102. [tor_cv_can_use_curve25519_donna_c64=cross],
  1103. [tor_cv_can_use_curve25519_donna_c64=no])])])
  1104. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  1105. nacl/crypto_scalarmult_curve25519.h])
  1106. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  1107. tor_cv_can_use_curve25519_nacl,
  1108. [tor_saved_LIBS="$LIBS"
  1109. LIBS="$LIBS -lnacl"
  1110. AC_LINK_IFELSE(
  1111. [AC_LANG_PROGRAM([dnl
  1112. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  1113. #include <crypto_scalarmult_curve25519.h>
  1114. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  1115. #include <nacl/crypto_scalarmult_curve25519.h>
  1116. #endif
  1117. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  1118. #error Hey, this is the reference implementation! That's not fast.
  1119. #endif
  1120. ], [
  1121. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  1122. ])], [tor_cv_can_use_curve25519_nacl=yes],
  1123. [tor_cv_can_use_curve25519_nacl=no])
  1124. LIBS="$tor_saved_LIBS" ])
  1125. dnl Okay, now we need to figure out which one to actually use. Fall back
  1126. dnl to curve25519-donna.c
  1127. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  1128. build_curve25519_donna_c64=yes
  1129. use_curve25519_donna=yes
  1130. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  1131. use_curve25519_nacl=yes
  1132. CURVE25519_LIBS=-lnacl
  1133. else
  1134. build_curve25519_donna=yes
  1135. use_curve25519_donna=yes
  1136. fi
  1137. if test "x$use_curve25519_donna" = "xyes"; then
  1138. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  1139. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  1140. fi
  1141. if test "x$use_curve25519_nacl" = "xyes"; then
  1142. AC_DEFINE(USE_CURVE25519_NACL, 1,
  1143. [Defined if we should use a curve25519 from nacl])
  1144. fi
  1145. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  1146. test "x$build_curve25519_donna" = "xyes")
  1147. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  1148. test "x$build_curve25519_donna_c64" = "xyes")
  1149. AC_SUBST(CURVE25519_LIBS)
  1150. dnl Make sure to enable support for large off_t if available.
  1151. AC_SYS_LARGEFILE
  1152. AC_CHECK_HEADERS([assert.h \
  1153. errno.h \
  1154. fcntl.h \
  1155. signal.h \
  1156. string.h \
  1157. sys/capability.h \
  1158. sys/fcntl.h \
  1159. sys/stat.h \
  1160. sys/time.h \
  1161. sys/types.h \
  1162. time.h \
  1163. unistd.h \
  1164. arpa/inet.h \
  1165. crt_externs.h \
  1166. execinfo.h \
  1167. gnu/libc-version.h \
  1168. grp.h \
  1169. ifaddrs.h \
  1170. inttypes.h \
  1171. limits.h \
  1172. linux/types.h \
  1173. machine/limits.h \
  1174. malloc.h \
  1175. malloc/malloc.h \
  1176. malloc_np.h \
  1177. netdb.h \
  1178. netinet/in.h \
  1179. netinet/in6.h \
  1180. pwd.h \
  1181. readpassphrase.h \
  1182. stdint.h \
  1183. stdatomic.h \
  1184. sys/eventfd.h \
  1185. sys/file.h \
  1186. sys/ioctl.h \
  1187. sys/limits.h \
  1188. sys/mman.h \
  1189. sys/param.h \
  1190. sys/prctl.h \
  1191. sys/random.h \
  1192. sys/resource.h \
  1193. sys/select.h \
  1194. sys/socket.h \
  1195. sys/statvfs.h \
  1196. sys/syscall.h \
  1197. sys/sysctl.h \
  1198. sys/syslimits.h \
  1199. sys/time.h \
  1200. sys/types.h \
  1201. sys/un.h \
  1202. sys/utime.h \
  1203. sys/wait.h \
  1204. syslog.h \
  1205. utime.h])
  1206. AC_CHECK_HEADERS(sys/param.h)
  1207. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  1208. [#ifdef HAVE_SYS_TYPES_H
  1209. #include <sys/types.h>
  1210. #endif
  1211. #ifdef HAVE_SYS_SOCKET_H
  1212. #include <sys/socket.h>
  1213. #endif])
  1214. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  1215. [#ifdef HAVE_SYS_TYPES_H
  1216. #include <sys/types.h>
  1217. #endif
  1218. #ifdef HAVE_SYS_SOCKET_H
  1219. #include <sys/socket.h>
  1220. #endif
  1221. #ifdef HAVE_NET_IF_H
  1222. #include <net/if.h>
  1223. #endif
  1224. #ifdef HAVE_NETINET_IN_H
  1225. #include <netinet/in.h>
  1226. #endif])
  1227. AC_CHECK_HEADERS(linux/if.h,[],[],
  1228. [
  1229. #ifdef HAVE_SYS_SOCKET_H
  1230. #include <sys/socket.h>
  1231. #endif
  1232. ])
  1233. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  1234. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  1235. [#ifdef HAVE_SYS_TYPES_H
  1236. #include <sys/types.h>
  1237. #endif
  1238. #ifdef HAVE_SYS_SOCKET_H
  1239. #include <sys/socket.h>
  1240. #endif
  1241. #ifdef HAVE_LIMITS_H
  1242. #include <limits.h>
  1243. #endif
  1244. #ifdef HAVE_LINUX_TYPES_H
  1245. #include <linux/types.h>
  1246. #endif
  1247. #ifdef HAVE_NETINET_IN6_H
  1248. #include <netinet/in6.h>
  1249. #endif
  1250. #ifdef HAVE_NETINET_IN_H
  1251. #include <netinet/in.h>
  1252. #endif])
  1253. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  1254. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  1255. [#ifdef HAVE_SYS_TYPES_H
  1256. #include <sys/types.h>
  1257. #endif
  1258. #ifdef HAVE_SYS_SOCKET_H
  1259. #include <sys/socket.h>
  1260. #endif
  1261. #ifdef HAVE_LIMITS_H
  1262. #include <limits.h>
  1263. #endif
  1264. #ifdef HAVE_LINUX_TYPES_H
  1265. #include <linux/types.h>
  1266. #endif
  1267. #ifdef HAVE_NETINET_IN6_H
  1268. #include <netinet/in6.h>
  1269. #endif
  1270. #ifdef HAVE_NETINET_IN_H
  1271. #include <netinet/in.h>
  1272. #endif
  1273. #ifdef HAVE_LINUX_IF_H
  1274. #include <linux/if.h>
  1275. #endif])
  1276. transparent_ok=0
  1277. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  1278. transparent_ok=1
  1279. fi
  1280. if test "x$linux_netfilter_ipv4" = "x1"; then
  1281. transparent_ok=1
  1282. fi
  1283. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  1284. transparent_ok=1
  1285. fi
  1286. if test "x$transparent_ok" = "x1"; then
  1287. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  1288. else
  1289. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  1290. fi
  1291. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1292. [#ifdef HAVE_SYS_TYPES_H
  1293. #include <sys/types.h>
  1294. #endif
  1295. #ifdef HAVE_SYS_TIME_H
  1296. #include <sys/time.h>
  1297. #endif])
  1298. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  1299. dnl Watch out.
  1300. AC_CHECK_SIZEOF(int8_t)
  1301. AC_CHECK_SIZEOF(int16_t)
  1302. AC_CHECK_SIZEOF(int32_t)
  1303. AC_CHECK_SIZEOF(int64_t)
  1304. AC_CHECK_SIZEOF(uint8_t)
  1305. AC_CHECK_SIZEOF(uint16_t)
  1306. AC_CHECK_SIZEOF(uint32_t)
  1307. AC_CHECK_SIZEOF(uint64_t)
  1308. AC_CHECK_SIZEOF(intptr_t)
  1309. AC_CHECK_SIZEOF(uintptr_t)
  1310. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  1311. AC_CHECK_SIZEOF(char)
  1312. AC_CHECK_SIZEOF(short)
  1313. AC_CHECK_SIZEOF(int)
  1314. AC_CHECK_SIZEOF(long)
  1315. AC_CHECK_SIZEOF(long long)
  1316. AC_CHECK_SIZEOF(__int64)
  1317. AC_CHECK_SIZEOF(void *)
  1318. AC_CHECK_SIZEOF(time_t)
  1319. AC_CHECK_SIZEOF(size_t)
  1320. AC_CHECK_SIZEOF(pid_t)
  1321. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1322. AC_PC_FROM_UCONTEXT([:])
  1323. dnl used to include sockaddr_storage, but everybody has that.
  1324. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1325. [#ifdef HAVE_SYS_TYPES_H
  1326. #include <sys/types.h>
  1327. #endif
  1328. #ifdef HAVE_NETINET_IN_H
  1329. #include <netinet/in.h>
  1330. #endif
  1331. #ifdef HAVE_NETINET_IN6_H
  1332. #include <netinet/in6.h>
  1333. #endif
  1334. #ifdef HAVE_SYS_SOCKET_H
  1335. #include <sys/socket.h>
  1336. #endif
  1337. #ifdef _WIN32
  1338. #define _WIN32_WINNT 0x0501
  1339. #define WIN32_LEAN_AND_MEAN
  1340. #include <winsock2.h>
  1341. #include <ws2tcpip.h>
  1342. #endif
  1343. ])
  1344. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1345. [#ifdef HAVE_SYS_TYPES_H
  1346. #include <sys/types.h>
  1347. #endif
  1348. #ifdef HAVE_NETINET_IN_H
  1349. #include <netinet/in.h>
  1350. #endif
  1351. #ifdef HAVE_NETINET_IN6_H
  1352. #include <netinet/in6.h>
  1353. #endif
  1354. #ifdef HAVE_SYS_SOCKET_H
  1355. #include <sys/socket.h>
  1356. #endif
  1357. #ifdef _WIN32
  1358. #define _WIN32_WINNT 0x0501
  1359. #define WIN32_LEAN_AND_MEAN
  1360. #include <winsock2.h>
  1361. #include <ws2tcpip.h>
  1362. #endif
  1363. ])
  1364. AC_CHECK_TYPES([rlim_t], , ,
  1365. [#ifdef HAVE_SYS_TYPES_H
  1366. #include <sys/types.h>
  1367. #endif
  1368. #ifdef HAVE_SYS_TIME_H
  1369. #include <sys/time.h>
  1370. #endif
  1371. #ifdef HAVE_SYS_RESOURCE_H
  1372. #include <sys/resource.h>
  1373. #endif
  1374. ])
  1375. AX_CHECK_SIGN([time_t],
  1376. [ : ],
  1377. [ : ], [
  1378. #ifdef HAVE_SYS_TYPES_H
  1379. #include <sys/types.h>
  1380. #endif
  1381. #ifdef HAVE_SYS_TIME_H
  1382. #include <sys/time.h>
  1383. #endif
  1384. #ifdef HAVE_TIME_H
  1385. #include <time.h>
  1386. #endif
  1387. ])
  1388. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1389. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1390. fi
  1391. AX_CHECK_SIGN([size_t],
  1392. [ tor_cv_size_t_signed=yes ],
  1393. [ tor_cv_size_t_signed=no ], [
  1394. #ifdef HAVE_SYS_TYPES_H
  1395. #include <sys/types.h>
  1396. #endif
  1397. ])
  1398. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1399. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1400. fi
  1401. AX_CHECK_SIGN([enum always],
  1402. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1403. [ : ], [
  1404. enum always { AAA, BBB, CCC };
  1405. ])
  1406. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1407. #ifdef HAVE_SYS_SOCKET_H
  1408. #include <sys/socket.h>
  1409. #endif
  1410. ])
  1411. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1412. AC_CHECK_SIZEOF(cell_t)
  1413. # Now make sure that NULL can be represented as zero bytes.
  1414. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1415. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1416. [[#include <stdlib.h>
  1417. #include <string.h>
  1418. #include <stdio.h>
  1419. #ifdef HAVE_STDDEF_H
  1420. #include <stddef.h>
  1421. #endif
  1422. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1423. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1424. [tor_cv_null_is_zero=yes],
  1425. [tor_cv_null_is_zero=no],
  1426. [tor_cv_null_is_zero=cross])])
  1427. if test "$tor_cv_null_is_zero" = "cross"; then
  1428. # Cross-compiling; let's hope that the target isn't raving mad.
  1429. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1430. fi
  1431. if test "$tor_cv_null_is_zero" != "no"; then
  1432. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1433. [Define to 1 iff memset(0) sets pointers to NULL])
  1434. fi
  1435. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1436. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1437. [[#include <stdlib.h>
  1438. #include <string.h>
  1439. #include <stdio.h>
  1440. #ifdef HAVE_STDDEF_H
  1441. #include <stddef.h>
  1442. #endif
  1443. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1444. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1445. [tor_cv_dbl0_is_zero=yes],
  1446. [tor_cv_dbl0_is_zero=no],
  1447. [tor_cv_dbl0_is_zero=cross])])
  1448. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1449. # Cross-compiling; let's hope that the target isn't raving mad.
  1450. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1451. fi
  1452. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1453. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1454. [Define to 1 iff memset(0) sets doubles to 0.0])
  1455. fi
  1456. # And what happens when we malloc zero?
  1457. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  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 () { return malloc(0)?0:1; }]])],
  1466. [tor_cv_malloc_zero_works=yes],
  1467. [tor_cv_malloc_zero_works=no],
  1468. [tor_cv_malloc_zero_works=cross])])
  1469. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1470. # Cross-compiling; let's hope that the target isn't raving mad.
  1471. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1472. fi
  1473. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1474. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1475. [Define to 1 iff malloc(0) returns a pointer])
  1476. fi
  1477. # whether we seem to be in a 2s-complement world.
  1478. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1479. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1480. [[int main () { int problem = ((-99) != (~99)+1);
  1481. return problem ? 1 : 0; }]])],
  1482. [tor_cv_twos_complement=yes],
  1483. [tor_cv_twos_complement=no],
  1484. [tor_cv_twos_complement=cross])])
  1485. if test "$tor_cv_twos_complement" = "cross"; then
  1486. # Cross-compiling; let's hope that the target isn't raving mad.
  1487. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1488. fi
  1489. if test "$tor_cv_twos_complement" != "no"; then
  1490. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1491. [Define to 1 iff we represent negative integers with
  1492. two's complement])
  1493. fi
  1494. # What does shifting a negative value do?
  1495. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1496. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1497. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1498. [tor_cv_sign_extend=yes],
  1499. [tor_cv_sign_extend=no],
  1500. [tor_cv_sign_extend=cross])])
  1501. if test "$tor_cv_sign_extend" = "cross"; then
  1502. # Cross-compiling; let's hope that the target isn't raving mad.
  1503. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1504. fi
  1505. if test "$tor_cv_sign_extend" != "no"; then
  1506. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1507. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1508. fi
  1509. # Is uint8_t the same type as unsigned char?
  1510. AC_CACHE_CHECK([whether uint8_t is the same type as unsigned char], tor_cv_uint8_uchar,
  1511. [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1512. #include <stdint.h>
  1513. extern uint8_t c;
  1514. unsigned char c;]])],
  1515. [tor_cv_uint8_uchar=yes],
  1516. [tor_cv_uint8_uchar=no],
  1517. [tor_cv_uint8_uchar=cross])])
  1518. if test "$tor_cv_uint8_uchar" = "cross"; then
  1519. AC_MSG_NOTICE([Cross-compiling: we'll assume that uint8_t is the same type as unsigned char])
  1520. fi
  1521. if test "$tor_cv_uint8_uchar" = "no"; then
  1522. AC_MSG_ERROR([We assume that uint8_t is the same type as unsigned char, but your compiler disagrees.])
  1523. fi
  1524. # Whether we should use the dmalloc memory allocation debugging library.
  1525. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1526. AC_ARG_WITH(dmalloc,
  1527. AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
  1528. [if [[ "$withval" = "yes" ]]; then
  1529. dmalloc=1
  1530. AC_MSG_RESULT(yes)
  1531. else
  1532. dmalloc=1
  1533. AC_MSG_RESULT(no)
  1534. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1535. )
  1536. if [[ $dmalloc -eq 1 ]]; then
  1537. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1538. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1539. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1540. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1541. fi
  1542. AC_ARG_WITH(tcmalloc,
  1543. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
  1544. [ tcmalloc=yes ], [ tcmalloc=no ])
  1545. if test "x$tcmalloc" = "xyes"; then
  1546. LDFLAGS="-ltcmalloc $LDFLAGS"
  1547. fi
  1548. using_custom_malloc=no
  1549. if test "x$enable_openbsd_malloc" = "xyes"; then
  1550. using_custom_malloc=yes
  1551. fi
  1552. if test "x$tcmalloc" = "xyes"; then
  1553. using_custom_malloc=yes
  1554. fi
  1555. if test "$using_custom_malloc" = "no"; then
  1556. AC_CHECK_FUNCS(mallinfo)
  1557. fi
  1558. # By default, we're going to assume we don't have mlockall()
  1559. # bionic and other platforms have various broken mlockall subsystems.
  1560. # Some systems don't have a working mlockall, some aren't linkable,
  1561. # and some have it but don't declare it.
  1562. AC_CHECK_FUNCS(mlockall)
  1563. AC_CHECK_DECLS([mlockall], , , [
  1564. #ifdef HAVE_SYS_MMAN_H
  1565. #include <sys/mman.h>
  1566. #endif])
  1567. # Allow user to specify an alternate syslog facility
  1568. AC_ARG_WITH(syslog-facility,
  1569. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1570. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1571. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1572. AC_SUBST(LOGFACILITY)
  1573. # Check if we have getresuid and getresgid
  1574. AC_CHECK_FUNCS(getresuid getresgid)
  1575. # Check for gethostbyname_r in all its glorious incompatible versions.
  1576. # (This logic is based on that in Python's configure.in)
  1577. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1578. [Define this if you have any gethostbyname_r()])
  1579. AC_CHECK_FUNC(gethostbyname_r, [
  1580. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1581. OLD_CFLAGS=$CFLAGS
  1582. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1583. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1584. #include <netdb.h>
  1585. ]], [[
  1586. char *cp1, *cp2;
  1587. struct hostent *h1, *h2;
  1588. int i1, i2;
  1589. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1590. ]])],[
  1591. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1592. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1593. [Define this if gethostbyname_r takes 6 arguments])
  1594. AC_MSG_RESULT(6)
  1595. ], [
  1596. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1597. #include <netdb.h>
  1598. ]], [[
  1599. char *cp1, *cp2;
  1600. struct hostent *h1;
  1601. int i1, i2;
  1602. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1603. ]])], [
  1604. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1605. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1606. [Define this if gethostbyname_r takes 5 arguments])
  1607. AC_MSG_RESULT(5)
  1608. ], [
  1609. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1610. #include <netdb.h>
  1611. ]], [[
  1612. char *cp1;
  1613. struct hostent *h1;
  1614. struct hostent_data hd;
  1615. (void) gethostbyname_r(cp1,h1,&hd);
  1616. ]])], [
  1617. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1618. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1619. [Define this if gethostbyname_r takes 3 arguments])
  1620. AC_MSG_RESULT(3)
  1621. ], [
  1622. AC_MSG_RESULT(0)
  1623. ])
  1624. ])
  1625. ])
  1626. CFLAGS=$OLD_CFLAGS
  1627. ])
  1628. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1629. tor_cv_have_func_macro,
  1630. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1631. #include <stdio.h>
  1632. int main(int c, char **v) { puts(__func__); }])],
  1633. tor_cv_have_func_macro=yes,
  1634. tor_cv_have_func_macro=no))
  1635. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1636. tor_cv_have_FUNC_macro,
  1637. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1638. #include <stdio.h>
  1639. int main(int c, char **v) { puts(__FUNC__); }])],
  1640. tor_cv_have_FUNC_macro=yes,
  1641. tor_cv_have_FUNC_macro=no))
  1642. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1643. tor_cv_have_FUNCTION_macro,
  1644. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1645. #include <stdio.h>
  1646. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1647. tor_cv_have_FUNCTION_macro=yes,
  1648. tor_cv_have_FUNCTION_macro=no))
  1649. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1650. tor_cv_have_environ_declared,
  1651. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1652. #ifdef HAVE_UNISTD_H
  1653. #include <unistd.h>
  1654. #endif
  1655. #include <stdlib.h>
  1656. int main(int c, char **v) { char **t = environ; }])],
  1657. tor_cv_have_environ_declared=yes,
  1658. tor_cv_have_environ_declared=no))
  1659. if test "$tor_cv_have_func_macro" = "yes"; then
  1660. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1661. fi
  1662. if test "$tor_cv_have_FUNC_macro" = "yes"; then
  1663. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1664. fi
  1665. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1666. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1667. [Defined if the compiler supports __FUNCTION__])
  1668. fi
  1669. if test "$tor_cv_have_environ_declared" = "yes"; then
  1670. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1671. [Defined if we have extern char **environ already declared])
  1672. fi
  1673. # $prefix stores the value of the --prefix command line option, or
  1674. # NONE if the option wasn't set. In the case that it wasn't set, make
  1675. # it be the default, so that we can use it to expand directories now.
  1676. if test "x$prefix" = "xNONE"; then
  1677. prefix=$ac_default_prefix
  1678. fi
  1679. # and similarly for $exec_prefix
  1680. if test "x$exec_prefix" = "xNONE"; then
  1681. exec_prefix=$prefix
  1682. fi
  1683. if test "x$BUILDDIR" = "x"; then
  1684. BUILDDIR=`pwd`
  1685. fi
  1686. AC_SUBST(BUILDDIR)
  1687. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1688. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1689. if test "x$SRCDIR" = "x"; then
  1690. SRCDIR=$(cd "$srcdir"; pwd)
  1691. fi
  1692. AH_TEMPLATE([SRCDIR],[tor's sourcedir directory])
  1693. AC_DEFINE_UNQUOTED(SRCDIR,"$SRCDIR")
  1694. if test "x$CONFDIR" = "x"; then
  1695. CONFDIR=`eval echo $sysconfdir/tor`
  1696. fi
  1697. AC_SUBST(CONFDIR)
  1698. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1699. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1700. BINDIR=`eval echo $bindir`
  1701. AC_SUBST(BINDIR)
  1702. LOCALSTATEDIR=`eval echo $localstatedir`
  1703. AC_SUBST(LOCALSTATEDIR)
  1704. if test "$bwin32" = "true"; then
  1705. # Test if the linker supports the --nxcompat and --dynamicbase options
  1706. # for Windows
  1707. save_LDFLAGS="$LDFLAGS"
  1708. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1709. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1710. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1711. [AC_MSG_RESULT([yes])]
  1712. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1713. [AC_MSG_RESULT([no])]
  1714. )
  1715. LDFLAGS="$save_LDFLAGS"
  1716. fi
  1717. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1718. # than autoconf's macros like.
  1719. if test "$GCC" = "yes"; then
  1720. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1721. # accident waiting to happen.
  1722. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1723. else
  1724. # Override optimization level for non-gcc compilers
  1725. CFLAGS="$CFLAGS -O"
  1726. enable_gcc_warnings=no
  1727. enable_gcc_warnings_advisory=no
  1728. fi
  1729. # Warnings implies advisory-warnings and -Werror.
  1730. if test "$enable_gcc_warnings" = "yes"; then
  1731. enable_gcc_warnings_advisory=yes
  1732. enable_fatal_warnings=yes
  1733. fi
  1734. # OS X Lion started deprecating the system openssl. Let's just disable
  1735. # all deprecation warnings on OS X. Also, to potentially make the binary
  1736. # a little smaller, let's enable dead_strip.
  1737. case "$host_os" in
  1738. darwin*)
  1739. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1740. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1741. esac
  1742. # Add some more warnings which we use in development but not in the
  1743. # released versions. (Some relevant gcc versions can't handle these.)
  1744. #
  1745. # Note that we have to do this near the end of the autoconf process, or
  1746. # else we may run into problems when these warnings hit on the testing C
  1747. # programs that autoconf wants to build.
  1748. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1749. case "$host" in
  1750. *-*-openbsd* | *-*-bitrig*)
  1751. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1752. # That's fine, except that the headers don't pass -Wredundant-decls.
  1753. # Therefore, let's disable -Wsystem-headers when we're building
  1754. # with maximal warnings on OpenBSD.
  1755. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1756. esac
  1757. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1758. # have it work better.
  1759. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1760. # This warning was added in gcc 4.3, but it appears to generate
  1761. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1762. #CFLAGS="$CFLAGS -Wlogical-op"
  1763. m4_foreach_w([warning_flag], [
  1764. -Waddress
  1765. -Waddress-of-array-temporary
  1766. -Waddress-of-temporary
  1767. -Wambiguous-macro
  1768. -Wanonymous-pack-parens
  1769. -Warc
  1770. -Warc-abi
  1771. -Warc-bridge-casts-disallowed-in-nonarc
  1772. -Warc-maybe-repeated-use-of-weak
  1773. -Warc-performSelector-leaks
  1774. -Warc-repeated-use-of-weak
  1775. -Warray-bounds
  1776. -Warray-bounds-pointer-arithmetic
  1777. -Wasm
  1778. -Wasm-operand-widths
  1779. -Watomic-properties
  1780. -Watomic-property-with-user-defined-accessor
  1781. -Wauto-import
  1782. -Wauto-storage-class
  1783. -Wauto-var-id
  1784. -Wavailability
  1785. -Wbackslash-newline-escape
  1786. -Wbad-array-new-length
  1787. -Wbind-to-temporary-copy
  1788. -Wbitfield-constant-conversion
  1789. -Wbool-conversion
  1790. -Wbool-conversions
  1791. -Wbuiltin-requires-header
  1792. -Wchar-align
  1793. -Wcompare-distinct-pointer-types
  1794. -Wcomplex-component-init
  1795. -Wconditional-type-mismatch
  1796. -Wconfig-macros
  1797. -Wconstant-conversion
  1798. -Wconstant-logical-operand
  1799. -Wconstexpr-not-const
  1800. -Wcustom-atomic-properties
  1801. -Wdangling-field
  1802. -Wdangling-initializer-list
  1803. -Wdate-time
  1804. -Wdelegating-ctor-cycles
  1805. -Wdeprecated-implementations
  1806. -Wdeprecated-register
  1807. -Wdirect-ivar-access
  1808. -Wdiscard-qual
  1809. -Wdistributed-object-modifiers
  1810. -Wdivision-by-zero
  1811. -Wdollar-in-identifier-extension
  1812. -Wdouble-promotion
  1813. -Wduplicate-decl-specifier
  1814. -Wduplicate-enum
  1815. -Wduplicate-method-arg
  1816. -Wduplicate-method-match
  1817. -Wduplicated-cond
  1818. -Wdynamic-class-memaccess
  1819. -Wembedded-directive
  1820. -Wempty-translation-unit
  1821. -Wenum-conversion
  1822. -Wexit-time-destructors
  1823. -Wexplicit-ownership-type
  1824. -Wextern-initializer
  1825. -Wextra
  1826. -Wextra-semi
  1827. -Wextra-tokens
  1828. -Wflexible-array-extensions
  1829. -Wfloat-conversion
  1830. -Wformat-non-iso
  1831. -Wfour-char-constants
  1832. -Wgcc-compat
  1833. -Wglobal-constructors
  1834. -Wgnu-array-member-paren-init
  1835. -Wgnu-designator
  1836. -Wgnu-static-float-init
  1837. -Wheader-guard
  1838. -Wheader-hygiene
  1839. -Widiomatic-parentheses
  1840. -Wignored-attributes
  1841. -Wimplicit-atomic-properties
  1842. -Wimplicit-conversion-floating-point-to-bool
  1843. -Wimplicit-exception-spec-mismatch
  1844. -Wimplicit-fallthrough
  1845. -Wimplicit-fallthrough-per-function
  1846. -Wimplicit-retain-self
  1847. -Wimport-preprocessor-directive-pedantic
  1848. -Wincompatible-library-redeclaration
  1849. -Wincompatible-pointer-types-discards-qualifiers
  1850. -Wincomplete-implementation
  1851. -Wincomplete-module
  1852. -Wincomplete-umbrella
  1853. -Winit-self
  1854. -Wint-conversions
  1855. -Wint-to-void-pointer-cast
  1856. -Winteger-overflow
  1857. -Winvalid-constexpr
  1858. -Winvalid-iboutlet
  1859. -Winvalid-noreturn
  1860. -Winvalid-pp-token
  1861. -Winvalid-source-encoding
  1862. -Winvalid-token-paste
  1863. -Wknr-promoted-parameter
  1864. -Wlarge-by-value-copy
  1865. -Wliteral-conversion
  1866. -Wliteral-range
  1867. -Wlocal-type-template-args
  1868. -Wlogical-op
  1869. -Wloop-analysis
  1870. -Wmain-return-type
  1871. -Wmalformed-warning-check
  1872. -Wmethod-signatures
  1873. -Wmicrosoft
  1874. -Wmicrosoft-exists
  1875. -Wmismatched-parameter-types
  1876. -Wmismatched-return-types
  1877. -Wmissing-field-initializers
  1878. -Wmissing-format-attribute
  1879. -Wmissing-noreturn
  1880. -Wmissing-selector-name
  1881. -Wmissing-sysroot
  1882. -Wmissing-variable-declarations
  1883. -Wmodule-conflict
  1884. -Wnested-anon-types
  1885. -Wnewline-eof
  1886. -Wnon-literal-null-conversion
  1887. -Wnon-pod-varargs
  1888. -Wnonportable-cfstrings
  1889. -Wnormalized=nfkc
  1890. -Wnull-arithmetic
  1891. -Wnull-character
  1892. -Wnull-conversion
  1893. -Wnull-dereference
  1894. -Wout-of-line-declaration
  1895. -Wover-aligned
  1896. -Woverlength-strings
  1897. -Woverride-init
  1898. -Woverriding-method-mismatch
  1899. -Wpointer-type-mismatch
  1900. -Wpredefined-identifier-outside-function
  1901. -Wprotocol-property-synthesis-ambiguity
  1902. -Wreadonly-iboutlet-property
  1903. -Wreadonly-setter-attrs
  1904. -Wreceiver-expr
  1905. -Wreceiver-forward-class
  1906. -Wreceiver-is-weak
  1907. -Wreinterpret-base-class
  1908. -Wrequires-super-attribute
  1909. -Wreserved-user-defined-literal
  1910. -Wreturn-stack-address
  1911. -Wsection
  1912. -Wselector-type-mismatch
  1913. -Wsentinel
  1914. -Wserialized-diagnostics
  1915. -Wshadow
  1916. -Wshift-count-negative
  1917. -Wshift-count-overflow
  1918. -Wshift-negative-value
  1919. -Wshift-overflow=2
  1920. -Wshift-sign-overflow
  1921. -Wshorten-64-to-32
  1922. -Wsizeof-array-argument
  1923. -Wsource-uses-openmp
  1924. -Wstatic-float-init
  1925. -Wstatic-in-inline
  1926. -Wstatic-local-in-inline
  1927. -Wstrict-overflow=1
  1928. -Wstring-compare
  1929. -Wstring-conversion
  1930. -Wstrlcpy-strlcat-size
  1931. -Wstrncat-size
  1932. -Wsuggest-attribute=format
  1933. -Wsuggest-attribute=noreturn
  1934. -Wsuper-class-method-mismatch
  1935. -Wswitch-bool
  1936. -Wsync-nand
  1937. -Wtautological-constant-out-of-range-compare
  1938. -Wtentative-definition-incomplete-type
  1939. -Wtrampolines
  1940. -Wtype-safety
  1941. -Wtypedef-redefinition
  1942. -Wtypename-missing
  1943. -Wundefined-inline
  1944. -Wundefined-internal
  1945. -Wundefined-reinterpret-cast
  1946. -Wunicode
  1947. -Wunicode-whitespace
  1948. -Wunknown-warning-option
  1949. -Wunnamed-type-template-args
  1950. -Wunneeded-member-function
  1951. -Wunsequenced
  1952. -Wunsupported-visibility
  1953. -Wunused-but-set-parameter
  1954. -Wunused-but-set-variable
  1955. -Wunused-command-line-argument
  1956. -Wunused-const-variable=2
  1957. -Wunused-exception-parameter
  1958. -Wunused-local-typedefs
  1959. -Wunused-member-function
  1960. -Wunused-sanitize-argument
  1961. -Wunused-volatile-lvalue
  1962. -Wuser-defined-literals
  1963. -Wvariadic-macros
  1964. -Wvector-conversion
  1965. -Wvector-conversions
  1966. -Wvexing-parse
  1967. -Wvisibility
  1968. -Wvla-extension
  1969. -Wzero-length-array
  1970. ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
  1971. dnl We should re-enable this in some later version. Clang doesn't
  1972. dnl mind, but it causes trouble with GCC.
  1973. dnl -Wstrict-overflow=2
  1974. dnl These seem to require annotations that we don't currently use,
  1975. dnl and they give false positives in our pthreads wrappers. (Clang 4)
  1976. dnl -Wthread-safety
  1977. dnl -Wthread-safety-analysis
  1978. dnl -Wthread-safety-attributes
  1979. dnl -Wthread-safety-beta
  1980. dnl -Wthread-safety-precise
  1981. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1982. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1983. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1984. CFLAGS="$CFLAGS -Wwrite-strings"
  1985. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1986. CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
  1987. CFLAGS="$CFLAGS -Wunused-parameter "
  1988. # These interfere with building main() { return 0; }, which autoconf
  1989. # likes to use as its default program.
  1990. CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
  1991. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  1992. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  1993. fi
  1994. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  1995. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  1996. fi
  1997. if test "x$enable_fatal_warnings" = "xyes"; then
  1998. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  1999. # default autoconf programs are full of errors.
  2000. CFLAGS="$CFLAGS -Werror"
  2001. fi
  2002. fi
  2003. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  2004. case "$host_os" in
  2005. darwin*)
  2006. AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
  2007. esac
  2008. fi
  2009. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  2010. AC_CONFIG_FILES([
  2011. Doxyfile
  2012. Makefile
  2013. contrib/dist/suse/tor.sh
  2014. contrib/operator-tools/tor.logrotate
  2015. contrib/dist/tor.sh
  2016. contrib/dist/torctl
  2017. contrib/dist/tor.service
  2018. src/config/torrc.sample
  2019. src/config/torrc.minimal
  2020. src/rust/.cargo/config
  2021. scripts/maint/checkOptionDocs.pl
  2022. scripts/maint/updateVersions.pl
  2023. ])
  2024. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  2025. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  2026. for file in $regular_mans ; do
  2027. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  2028. echo "==================================";
  2029. echo;
  2030. echo "Building Tor has failed since manpages cannot be built.";
  2031. echo;
  2032. echo "You need asciidoc installed to be able to build the manpages.";
  2033. echo "To build without manpages, use the --disable-asciidoc argument";
  2034. echo "when calling configure.";
  2035. echo;
  2036. echo "==================================";
  2037. exit 1;
  2038. fi
  2039. done
  2040. fi
  2041. if test "$fragile_hardening" = "yes"; then
  2042. AC_MSG_WARN([
  2043. ============
  2044. Warning! Building Tor with --enable-fragile-hardening (also known as
  2045. --enable-expensive-hardening) makes some kinds of attacks harder, but makes
  2046. other kinds of attacks easier. A Tor instance build with this option will be
  2047. somewhat less vulnerable to remote code execution, arithmetic overflow, or
  2048. out-of-bounds read/writes... but at the cost of becoming more vulnerable to
  2049. denial of service attacks. For more information, see
  2050. https://trac.torproject.org/projects/tor/wiki/doc/TorFragileHardening
  2051. ============
  2052. ])
  2053. fi
  2054. AC_OUTPUT