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],[0.3.4.0-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$enable_fragile_hardening" = "xyes"; then
  153. fragile_hardening="yes"
  154. fi
  155. dnl Linker hardening options
  156. dnl Currently these options are ELF specific - you can't use this with MacOSX
  157. AC_ARG_ENABLE(linker-hardening,
  158. AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
  159. AC_ARG_ENABLE(local-appdata,
  160. AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
  161. if test "$enable_local_appdata" = "yes"; then
  162. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  163. [Defined if we default to host local appdata paths on Windows])
  164. fi
  165. # Tor2web mode flag
  166. AC_ARG_ENABLE(tor2web-mode,
  167. AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
  168. [if test "x$enableval" = "xyes"; then
  169. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  170. fi])
  171. AC_ARG_ENABLE(tool-name-check,
  172. AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
  173. AC_ARG_ENABLE(seccomp,
  174. AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
  175. AC_ARG_ENABLE(libscrypt,
  176. AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
  177. dnl Enable event tracing which are transformed to debug log statement.
  178. AC_ARG_ENABLE(event-tracing-debug,
  179. AS_HELP_STRING(--enable-event-tracing-debug, [build with event tracing to debug log]))
  180. AM_CONDITIONAL([USE_EVENT_TRACING_DEBUG], [test "x$enable_event_tracing_debug" = "xyes"])
  181. if test x$enable_event_tracing_debug = xyes; then
  182. AC_DEFINE([USE_EVENT_TRACING_DEBUG], [1], [Tracing framework to log debug])
  183. AC_DEFINE([TOR_EVENT_TRACING_ENABLED], [1], [Compile the event tracing instrumentation])
  184. fi
  185. dnl Enable Android only features.
  186. AC_ARG_ENABLE(android,
  187. AS_HELP_STRING(--enable-android, [build with Android features enabled]))
  188. AM_CONDITIONAL([USE_ANDROID], [test "x$enable_android" = "xyes"])
  189. if test "x$enable_android" = "xyes"; then
  190. AC_DEFINE([USE_ANDROID], [1], [Compile with Android specific features enabled])
  191. dnl Check if the Android log library is available.
  192. AC_CHECK_HEADERS([android/log.h])
  193. AC_SEARCH_LIBS(__android_log_write, [log])
  194. fi
  195. dnl ---
  196. dnl Tor modules options. These options are namespaced with --disable-module-XXX
  197. dnl ---
  198. dnl All our modules.
  199. m4_define(MODULES, dirauth)
  200. dnl Directory Authority module.
  201. AC_ARG_ENABLE([module-dirauth],
  202. AS_HELP_STRING([--disable-module-dirauth],
  203. [Do not build tor with the dirauth module]),
  204. [], dnl Action if-given
  205. AC_DEFINE([HAVE_MODULE_DIRAUTH], [1],
  206. [Compile with Directory Authority feature support]))
  207. AM_CONDITIONAL(BUILD_MODULE_DIRAUTH, [test "x$enable_module_dirauth" != "xno"])
  208. dnl Helper variables.
  209. TOR_MODULES_ALL_ENABLED=
  210. AC_DEFUN([ADD_MODULE], [
  211. MODULE=m4_toupper($1)
  212. TOR_MODULES_ALL_ENABLED="${TOR_MODULES_ALL_ENABLED} -DHAVE_MODULE_${MODULE}=1"
  213. ])
  214. m4_foreach_w([module], MODULES, [ADD_MODULE([module])])
  215. AC_SUBST(TOR_MODULES_ALL_ENABLED)
  216. dnl check for the correct "ar" when cross-compiling.
  217. dnl (AM_PROG_AR was new in automake 1.11.2, which we do not yet require,
  218. dnl so kludge up a replacement for the case where it isn't there yet.)
  219. m4_ifdef([AM_PROG_AR],
  220. [AM_PROG_AR],
  221. [AN_MAKEVAR([AR], [AC_PROG_AR])
  222. AN_PROGRAM([ar], [AC_PROG_AR])
  223. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [:])])
  224. AC_PROG_AR])
  225. dnl Check whether the above macro has settled for a simply named tool even
  226. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  227. dnl because that will find any cc on the system, not only the cross-compiler,
  228. dnl and then verify that a binary built with this compiler runs on the
  229. dnl build system. It will then come to the false conclusion that we're not
  230. dnl cross-compiling.
  231. if test "x$enable_tool_name_check" != "xno"; then
  232. if test "x$ac_tool_warned" = "xyes"; then
  233. AC_MSG_ERROR([We are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  234. elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
  235. AC_MSG_ERROR([We think we are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  236. fi
  237. fi
  238. AC_PROG_CC
  239. AC_PROG_CPP
  240. AC_PROG_MAKE_SET
  241. AC_PROG_RANLIB
  242. AC_PROG_SED
  243. AC_ARG_VAR([PERL], [path to Perl binary])
  244. AC_CHECK_PROGS([PERL], [perl])
  245. AM_CONDITIONAL(USE_PERL, [test "x$ac_cv_prog_PERL" != "x"])
  246. dnl check for asciidoc and a2x
  247. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  248. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  249. AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
  250. AM_PROG_CC_C_O
  251. AC_PROG_CC_C99
  252. AC_ARG_VAR([PYTHON], [path to Python binary])
  253. AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
  254. if test "x$PYTHON" = "x"; then
  255. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  256. fi
  257. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  258. dnl List all external rust crates we depend on here. Include the version
  259. rust_crates="libc-0.2.39"
  260. AC_SUBST(rust_crates)
  261. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  262. AC_C_FLEXIBLE_ARRAY_MEMBER
  263. ], [
  264. dnl Maybe we've got an old autoconf...
  265. AC_CACHE_CHECK([for flexible array members],
  266. tor_cv_c_flexarray,
  267. [AC_COMPILE_IFELSE(
  268. AC_LANG_PROGRAM([
  269. struct abc { int a; char b[]; };
  270. ], [
  271. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  272. def->b[0] = 33;
  273. ]),
  274. [tor_cv_c_flexarray=yes],
  275. [tor_cv_c_flexarray=no])])
  276. if test "$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 "$bwin32" = "cross"; then
  336. AC_MSG_CHECKING([for win32 (cross)])
  337. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  338. #ifdef _WIN32
  339. int main(int c, char **v) {return 0;}
  340. #else
  341. #error
  342. int main(int c, char **v) {return x(y);}
  343. #endif
  344. ])],
  345. bwin32=true; AC_MSG_RESULT([yes]),
  346. bwin32=false; AC_MSG_RESULT([no]))
  347. fi
  348. AH_BOTTOM([
  349. #ifdef _WIN32
  350. /* Defined to access windows functions and definitions for >=WinXP */
  351. # ifndef WINVER
  352. # define WINVER 0x0501
  353. # endif
  354. /* Defined to access _other_ windows functions and definitions for >=WinXP */
  355. # ifndef _WIN32_WINNT
  356. # define _WIN32_WINNT 0x0501
  357. # endif
  358. /* Defined to avoid including some windows headers as part of Windows.h */
  359. # ifndef WIN32_LEAN_AND_MEAN
  360. # define WIN32_LEAN_AND_MEAN 1
  361. # endif
  362. #endif
  363. ])
  364. AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
  365. AM_CONDITIONAL(BUILD_LIBTORRUNNER, test "x$bwin32" != "xtrue")
  366. dnl Enable C99 when compiling with MIPSpro
  367. AC_MSG_CHECKING([for MIPSpro compiler])
  368. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  369. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  370. #error
  371. return x(y);
  372. #endif
  373. ])],
  374. bmipspro=false; AC_MSG_RESULT(no),
  375. bmipspro=true; AC_MSG_RESULT(yes))
  376. if test "$bmipspro" = "true"; then
  377. CFLAGS="$CFLAGS -c99"
  378. fi
  379. AC_C_BIGENDIAN
  380. if test "x$enable_rust" = "xyes"; then
  381. AC_ARG_VAR([RUSTC], [path to the rustc binary])
  382. AC_CHECK_PROG([RUSTC], [rustc], [rustc],[no])
  383. if test "x$RUSTC" = "xno"; then
  384. AC_MSG_ERROR([rustc unavailable but rust integration requested.])
  385. fi
  386. AC_ARG_VAR([CARGO], [path to the cargo binary])
  387. AC_CHECK_PROG([CARGO], [cargo], [cargo],[no])
  388. if test "x$CARGO" = "xno"; then
  389. AC_MSG_ERROR([cargo unavailable but rust integration requested.])
  390. fi
  391. AC_DEFINE([HAVE_RUST], 1, [have Rust])
  392. if test "x$enable_cargo_online_mode" = "xyes"; then
  393. CARGO_ONLINE=
  394. RUST_DL=#
  395. else
  396. CARGO_ONLINE=--frozen
  397. RUST_DL=
  398. dnl When we're not allowed to touch the network, we need crate dependencies
  399. dnl locally available.
  400. AC_MSG_CHECKING([rust crate dependencies])
  401. AC_ARG_VAR([TOR_RUST_DEPENDENCIES], [path to directory with local crate mirror])
  402. if test "x$TOR_RUST_DEPENDENCIES" = "x"; then
  403. TOR_RUST_DEPENDENCIES="${srcdir}/src/ext/rust/crates"
  404. fi
  405. dnl Check whether the path exists before we try to cd into it.
  406. if test ! -d "$TOR_RUST_DEPENDENCIES"; then
  407. AC_MSG_ERROR([Rust dependency directory $TOR_RUST_DEPENDENCIES does not exist. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
  408. ERRORED=1
  409. fi
  410. dnl Make the path absolute, since we'll be using it from within a
  411. dnl subdirectory.
  412. TOR_RUST_DEPENDENCIES=$(cd "$TOR_RUST_DEPENDENCIES" ; pwd)
  413. for dep in $rust_crates; do
  414. if test ! -d "$TOR_RUST_DEPENDENCIES"/"$dep"; then
  415. 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.])
  416. ERRORED=1
  417. fi
  418. done
  419. if test "x$ERRORED" = "x"; then
  420. AC_MSG_RESULT([yes])
  421. fi
  422. fi
  423. dnl This is a workaround for #46797
  424. dnl (a.k.a https://github.com/rust-lang/rust/issues/46797 ). Once the
  425. dnl upstream bug is fixed, we can remove this workaround.
  426. case "$host_os" in
  427. darwin*)
  428. TOR_RUST_EXTRA_LIBS="-lresolv"
  429. ;;
  430. esac
  431. dnl For now both MSVC and MinGW rust libraries will output static libs with
  432. dnl the MSVC naming convention.
  433. if test "$bwin32" = "true"; then
  434. TOR_RUST_STATIC_NAME=tor_rust.lib
  435. else
  436. TOR_RUST_STATIC_NAME=libtor_rust.a
  437. fi
  438. AC_SUBST(TOR_RUST_STATIC_NAME)
  439. AC_SUBST(CARGO_ONLINE)
  440. AC_SUBST(RUST_DL)
  441. dnl Let's check the rustc version, too
  442. AC_MSG_CHECKING([rust version])
  443. RUSTC_VERSION=`$RUSTC --version`
  444. RUSTC_VERSION_MAJOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 1`
  445. RUSTC_VERSION_MINOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 2`
  446. if test "x$RUSTC_VERSION_MAJOR" = "x" -o "x$RUSTC_VERSION_MINOR" = "x"; then
  447. AC_MSG_ERROR([rustc version couldn't be identified])
  448. fi
  449. if test "$RUSTC_VERSION_MAJOR" -lt 2 -a "$RUSTC_VERSION_MINOR" -lt 14; then
  450. AC_MSG_ERROR([rustc must be at least version 1.14])
  451. fi
  452. AC_MSG_RESULT([$RUSTC_VERSION])
  453. fi
  454. AC_SUBST(TOR_RUST_EXTRA_LIBS)
  455. AC_SEARCH_LIBS(socket, [socket network])
  456. AC_SEARCH_LIBS(gethostbyname, [nsl])
  457. AC_SEARCH_LIBS(dlopen, [dl])
  458. AC_SEARCH_LIBS(inet_aton, [resolv])
  459. AC_SEARCH_LIBS(backtrace, [execinfo])
  460. saved_LIBS="$LIBS"
  461. AC_SEARCH_LIBS([clock_gettime], [rt])
  462. if test "$LIBS" != "$saved_LIBS"; then
  463. # Looks like we need -lrt for clock_gettime().
  464. have_rt=yes
  465. fi
  466. AC_SEARCH_LIBS(pthread_create, [pthread])
  467. AC_SEARCH_LIBS(pthread_detach, [pthread])
  468. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  469. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  470. AC_CHECK_FUNCS(
  471. _NSGetEnviron \
  472. RtlSecureZeroMemory \
  473. SecureZeroMemory \
  474. accept4 \
  475. backtrace \
  476. backtrace_symbols_fd \
  477. eventfd \
  478. explicit_bzero \
  479. timingsafe_memcmp \
  480. flock \
  481. ftime \
  482. get_current_dir_name \
  483. getaddrinfo \
  484. getifaddrs \
  485. getpass \
  486. getrlimit \
  487. gettimeofday \
  488. gmtime_r \
  489. gnu_get_libc_version \
  490. htonll \
  491. inet_aton \
  492. ioctl \
  493. issetugid \
  494. llround \
  495. localtime_r \
  496. lround \
  497. mach_approximate_time \
  498. memmem \
  499. memset_s \
  500. mmap \
  501. pipe \
  502. pipe2 \
  503. prctl \
  504. readpassphrase \
  505. rint \
  506. sigaction \
  507. socketpair \
  508. statvfs \
  509. strlcat \
  510. strlcpy \
  511. strnlen \
  512. strptime \
  513. strtok_r \
  514. strtoull \
  515. sysconf \
  516. sysctl \
  517. truncate \
  518. uname \
  519. usleep \
  520. vasprintf \
  521. _vscprintf
  522. )
  523. # Apple messed up when they added two functions functions in Sierra: they
  524. # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
  525. # checks. So we should only probe for those functions if we are sure that we
  526. # are not targeting OSX 10.11 or earlier.
  527. AC_MSG_CHECKING([for a pre-Sierra OSX build target])
  528. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  529. #ifdef __APPLE__
  530. # include <AvailabilityMacros.h>
  531. # ifndef MAC_OS_X_VERSION_10_12
  532. # define MAC_OS_X_VERSION_10_12 101200
  533. # endif
  534. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  535. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  536. # error "Running on Mac OSX 10.11 or earlier"
  537. # endif
  538. # endif
  539. #endif
  540. ]], [[]])],
  541. [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
  542. [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
  543. if test "$on_macos_pre_10_12" = "no"; then
  544. AC_CHECK_FUNCS(
  545. clock_gettime \
  546. getentropy \
  547. )
  548. fi
  549. if test "$bwin32" != "true"; then
  550. AC_CHECK_HEADERS(pthread.h)
  551. AC_CHECK_FUNCS(pthread_create)
  552. AC_CHECK_FUNCS(pthread_condattr_setclock)
  553. fi
  554. if test "$bwin32" = "true"; then
  555. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  556. #include <windows.h>
  557. #include <conio.h>
  558. #include <wchar.h>
  559. ])
  560. fi
  561. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  562. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  563. AC_MSG_CHECKING([whether free(NULL) works])
  564. AC_RUN_IFELSE([AC_LANG_PROGRAM([
  565. #include <stdlib.h>
  566. ], [
  567. char *p = NULL;
  568. free(p);
  569. ])],
  570. [free_null_ok=true; AC_MSG_RESULT(yes)],
  571. [free_null_ok=false; AC_MSG_RESULT(no)],
  572. [free_null_ok=cross; AC_MSG_RESULT(cross)])
  573. if test "$free_null_ok" = "false"; then
  574. AC_MSG_ERROR([Your libc implementation doesn't allow free(NULL), as required by C99.])
  575. fi
  576. dnl ------------------------------------------------------
  577. dnl Where do you live, libevent? And how do we call you?
  578. if test "$bwin32" = "true"; then
  579. TOR_LIB_WS32=-lws2_32
  580. TOR_LIB_IPHLPAPI=-liphlpapi
  581. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  582. # think it's actually necessary.
  583. TOR_LIB_GDI=-lgdi32
  584. TOR_LIB_USERENV=-luserenv
  585. else
  586. TOR_LIB_WS32=
  587. TOR_LIB_GDI=
  588. TOR_LIB_USERENV=
  589. fi
  590. AC_SUBST(TOR_LIB_WS32)
  591. AC_SUBST(TOR_LIB_GDI)
  592. AC_SUBST(TOR_LIB_IPHLPAPI)
  593. AC_SUBST(TOR_LIB_USERENV)
  594. tor_libevent_pkg_redhat="libevent"
  595. tor_libevent_pkg_debian="libevent-dev"
  596. tor_libevent_devpkg_redhat="libevent-devel"
  597. tor_libevent_devpkg_debian="libevent-dev"
  598. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  599. dnl linking for static builds.
  600. STATIC_LIBEVENT_FLAGS=""
  601. if test "$enable_static_libevent" = "yes"; then
  602. if test "$have_rt" = "yes"; then
  603. STATIC_LIBEVENT_FLAGS=" -lrt "
  604. fi
  605. fi
  606. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  607. #ifdef _WIN32
  608. #include <winsock2.h>
  609. #endif
  610. #include <sys/time.h>
  611. #include <sys/types.h>
  612. #include <event2/event.h>], [
  613. #ifdef _WIN32
  614. #include <winsock2.h>
  615. #endif
  616. struct event_base;
  617. struct event_base *event_base_new(void);
  618. void event_base_free(struct event_base *);],
  619. [
  620. #ifdef _WIN32
  621. {WSADATA d; WSAStartup(0x101,&d); }
  622. #endif
  623. event_base_free(event_base_new());
  624. ], [--with-libevent-dir], [/opt/libevent])
  625. dnl Determine the incantation needed to link libevent.
  626. save_LIBS="$LIBS"
  627. save_LDFLAGS="$LDFLAGS"
  628. save_CPPFLAGS="$CPPFLAGS"
  629. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  630. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  631. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  632. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  633. if test "$enable_static_libevent" = "yes"; then
  634. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  635. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  636. else
  637. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  638. fi
  639. else
  640. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  641. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  642. 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"))
  643. if test "$ac_cv_search_event_new" != "none required"; then
  644. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  645. fi
  646. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  647. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  648. fi
  649. else
  650. AC_MSG_ERROR("libevent2 is required but the headers could not be found")
  651. fi
  652. fi
  653. dnl Now check for particular libevent functions.
  654. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
  655. evutil_secure_rng_add_bytes \
  656. ])
  657. LIBS="$save_LIBS"
  658. LDFLAGS="$save_LDFLAGS"
  659. CPPFLAGS="$save_CPPFLAGS"
  660. dnl Check that libevent is at least at version 2.0.10, the first stable
  661. dnl release of its series
  662. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  663. AC_MSG_CHECKING([whether Libevent is new enough])
  664. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  665. #include <event2/event.h>
  666. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  667. #error
  668. int x = y(zz);
  669. #else
  670. int x = 1;
  671. #endif
  672. ])], [ AC_MSG_RESULT([yes]) ],
  673. [ AC_MSG_RESULT([no])
  674. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  675. LIBS="$save_LIBS"
  676. LDFLAGS="$save_LDFLAGS"
  677. CPPFLAGS="$save_CPPFLAGS"
  678. AC_SUBST(TOR_LIBEVENT_LIBS)
  679. dnl ------------------------------------------------------
  680. dnl Where do you live, libm?
  681. dnl On some platforms (Haiku/BeOS) the math library is
  682. dnl part of libroot. In which case don't link against lm
  683. TOR_LIB_MATH=""
  684. save_LIBS="$LIBS"
  685. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  686. if test "$ac_cv_search_pow" != "none required"; then
  687. TOR_LIB_MATH="$ac_cv_search_pow"
  688. fi
  689. LIBS="$save_LIBS"
  690. AC_SUBST(TOR_LIB_MATH)
  691. dnl ------------------------------------------------------
  692. dnl Where do you live, openssl? And how do we call you?
  693. tor_openssl_pkg_redhat="openssl"
  694. tor_openssl_pkg_debian="libssl-dev"
  695. tor_openssl_devpkg_redhat="openssl-devel"
  696. tor_openssl_devpkg_debian="libssl-dev"
  697. ALT_openssl_WITHVAL=""
  698. AC_ARG_WITH(ssl-dir,
  699. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  700. [
  701. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  702. ALT_openssl_WITHVAL="$withval"
  703. fi
  704. ])
  705. AC_MSG_NOTICE([Now, we'll look for OpenSSL >= 1.0.1])
  706. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI $TOR_LIB_WS32],
  707. [#include <openssl/ssl.h>
  708. char *getenv(const char *);],
  709. [struct ssl_cipher_st;
  710. unsigned SSL_CIPHER_get_id(const struct ssl_cipher_st *);
  711. char *getenv(const char *);],
  712. dnl This funny-looking test program calls getenv, so that the compiler
  713. dnl will neither make code that call SSL_CIPHER_get_id(NULL) [producing
  714. dnl a crash], nor optimize out the call to SSL_CIPHER_get_id().
  715. dnl We look for SSL_cipher_get_id() because it is present in
  716. dnl OpenSSL >=1.0.1, because it is not deprecated, and because Tor
  717. dnl depends on it.
  718. [if (getenv("THIS_SHOULDNT_BE_SET_X201803")) SSL_CIPHER_get_id((void *)0);], [],
  719. [/usr/local/opt/openssl /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /opt/openssl])
  720. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  721. if test "$enable_static_openssl" = "yes"; then
  722. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  723. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  724. else
  725. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  726. fi
  727. else
  728. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  729. fi
  730. AC_SUBST(TOR_OPENSSL_LIBS)
  731. dnl Now check for particular openssl functions.
  732. save_LIBS="$LIBS"
  733. save_LDFLAGS="$LDFLAGS"
  734. save_CPPFLAGS="$CPPFLAGS"
  735. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  736. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  737. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  738. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  739. #include <openssl/opensslv.h>
  740. #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
  741. #error "too old"
  742. #endif
  743. ]], [[]])],
  744. [ : ],
  745. [ 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.]) ])
  746. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  747. #include <openssl/opensslv.h>
  748. #include <openssl/evp.h>
  749. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  750. #error "no ECC"
  751. #endif
  752. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  753. #error "curves unavailable"
  754. #endif
  755. ]], [[]])],
  756. [ : ],
  757. [ 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.]) ])
  758. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  759. [#include <openssl/ssl.h>
  760. ])
  761. AC_CHECK_FUNCS([ \
  762. SSL_SESSION_get_master_key \
  763. SSL_get_server_random \
  764. SSL_get_client_ciphers \
  765. SSL_get_client_random \
  766. SSL_CIPHER_find \
  767. TLS_method
  768. ])
  769. dnl Check if OpenSSL has scrypt implementation.
  770. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  771. dnl Check if OpenSSL structures are opaque
  772. AC_CHECK_MEMBERS([SSL.state], , ,
  773. [#include <openssl/ssl.h>
  774. ])
  775. AC_CHECK_SIZEOF(SHA_CTX, , [AC_INCLUDES_DEFAULT()
  776. #include <openssl/sha.h>
  777. ])
  778. dnl Define the set of checks for KIST scheduler support.
  779. AC_DEFUN([CHECK_KIST_SUPPORT],[
  780. dnl KIST needs struct tcp_info and for certain members to exist.
  781. AC_CHECK_MEMBERS(
  782. [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss],
  783. , ,[[#include <netinet/tcp.h>]])
  784. dnl KIST needs SIOCOUTQNSD to exist for an ioctl call.
  785. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  786. #include <linux/sockios.h>
  787. #ifndef SIOCOUTQNSD
  788. #error
  789. #endif
  790. ])], have_siocoutqnsd=yes, have_siocoutqnsd=no)
  791. if test "x$have_siocoutqnsd" = "xyes"; then
  792. if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then
  793. if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then
  794. have_kist_support=yes
  795. fi
  796. fi
  797. fi
  798. ])
  799. dnl Now, trigger the check.
  800. CHECK_KIST_SUPPORT
  801. AS_IF([test "x$have_kist_support" = "xyes"],
  802. [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported
  803. on this system])],
  804. [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])])
  805. LIBS="$save_LIBS"
  806. LDFLAGS="$save_LDFLAGS"
  807. CPPFLAGS="$save_CPPFLAGS"
  808. dnl ------------------------------------------------------
  809. dnl Where do you live, zlib? And how do we call you?
  810. tor_zlib_pkg_redhat="zlib"
  811. tor_zlib_pkg_debian="zlib1g"
  812. tor_zlib_devpkg_redhat="zlib-devel"
  813. tor_zlib_devpkg_debian="zlib1g-dev"
  814. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  815. [#include <zlib.h>],
  816. [const char * zlibVersion(void);],
  817. [zlibVersion();], [--with-zlib-dir],
  818. [/opt/zlib])
  819. if test "$enable_static_zlib" = "yes"; then
  820. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  821. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  822. using --enable-static-zlib")
  823. else
  824. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  825. fi
  826. else
  827. TOR_ZLIB_LIBS="-lz"
  828. fi
  829. AC_SUBST(TOR_ZLIB_LIBS)
  830. dnl ------------------------------------------------------
  831. dnl Where we do we find lzma?
  832. AC_ARG_ENABLE(lzma,
  833. AS_HELP_STRING(--enable-lzma, [enable support for the LZMA compression scheme.]),
  834. [case "${enableval}" in
  835. "yes") lzma=true ;;
  836. "no") lzma=false ;;
  837. * ) AC_MSG_ERROR(bad value for --enable-lzma) ;;
  838. esac], [lzma=auto])
  839. if test "x$enable_lzma" = "xno"; then
  840. have_lzma=no;
  841. else
  842. PKG_CHECK_MODULES([LZMA],
  843. [liblzma],
  844. have_lzma=yes,
  845. have_lzma=no)
  846. if test "x$have_lzma" = "xno" ; then
  847. AC_MSG_WARN([Unable to find liblzma.])
  848. fi
  849. fi
  850. if test "x$have_lzma" = "xyes"; then
  851. AC_DEFINE(HAVE_LZMA,1,[Have LZMA])
  852. TOR_LZMA_CFLAGS="${LZMA_CFLAGS}"
  853. TOR_LZMA_LIBS="${LZMA_LIBS}"
  854. fi
  855. AC_SUBST(TOR_LZMA_CFLAGS)
  856. AC_SUBST(TOR_LZMA_LIBS)
  857. dnl ------------------------------------------------------
  858. dnl Where we do we find zstd?
  859. AC_ARG_ENABLE(zstd,
  860. AS_HELP_STRING(--enable-zstd, [enable support for the Zstandard compression scheme.]),
  861. [case "${enableval}" in
  862. "yes") zstd=true ;;
  863. "no") zstd=false ;;
  864. * ) AC_MSG_ERROR(bad value for --enable-zstd) ;;
  865. esac], [zstd=auto])
  866. if test "x$enable_zstd" = "xno"; then
  867. have_zstd=no;
  868. else
  869. PKG_CHECK_MODULES([ZSTD],
  870. [libzstd >= 1.1],
  871. have_zstd=yes,
  872. have_zstd=no)
  873. if test "x$have_zstd" = "xno" ; then
  874. AC_MSG_WARN([Unable to find libzstd.])
  875. fi
  876. fi
  877. if test "x$have_zstd" = "xyes"; then
  878. AC_DEFINE(HAVE_ZSTD,1,[Have Zstd])
  879. TOR_ZSTD_CFLAGS="${ZSTD_CFLAGS}"
  880. TOR_ZSTD_LIBS="${ZSTD_LIBS}"
  881. dnl now check for zstd functions
  882. save_LIBS="$LIBS"
  883. save_CFLAGS="$CFLAGS"
  884. LIBS="$LIBS $ZSTD_LIBS"
  885. CFLAGS="$CFLAGS $ZSTD_CFLAGS"
  886. AC_CHECK_FUNCS(ZSTD_estimateCStreamSize \
  887. ZSTD_estimateDCtxSize)
  888. LIBS="$save_LIBS"
  889. CFLAGS="$save_CFLAGS"
  890. fi
  891. AC_SUBST(TOR_ZSTD_CFLAGS)
  892. AC_SUBST(TOR_ZSTD_LIBS)
  893. dnl ----------------------------------------------------------------------
  894. dnl Check if libcap is available for capabilities.
  895. tor_cap_pkg_debian="libcap2"
  896. tor_cap_pkg_redhat="libcap"
  897. tor_cap_devpkg_debian="libcap-dev"
  898. tor_cap_devpkg_redhat="libcap-devel"
  899. AC_CHECK_LIB([cap], [cap_init], [],
  900. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  901. )
  902. AC_CHECK_FUNCS(cap_set_proc)
  903. dnl ---------------------------------------------------------------------
  904. dnl Now that we know about our major libraries, we can check for compiler
  905. dnl and linker hardening options. We need to do this with the libraries known,
  906. dnl since sometimes the linker will like an option but not be willing to
  907. dnl use it with a build of a library.
  908. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  909. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_LIB_USERENV $TOR_CAP_LIBS"
  910. CFLAGS_FTRAPV=
  911. CFLAGS_FWRAPV=
  912. CFLAGS_ASAN=
  913. CFLAGS_UBSAN=
  914. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  915. #if !defined(__clang__)
  916. #error
  917. #endif])], have_clang=yes, have_clang=no)
  918. if test "x$enable_gcc_hardening" != "xno"; then
  919. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  920. if test "x$have_clang" = "xyes"; then
  921. TOR_CHECK_CFLAGS(-Qunused-arguments)
  922. fi
  923. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  924. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  925. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  926. m4_ifdef([AS_VAR_IF],[
  927. AS_VAR_IF(can_compile, [yes],
  928. AS_VAR_IF(can_link, [yes],
  929. [],
  930. 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.)]))
  931. )])
  932. AS_VAR_POPDEF([can_link])
  933. AS_VAR_POPDEF([can_compile])
  934. TOR_CHECK_CFLAGS(-Wstack-protector)
  935. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  936. if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
  937. TOR_CHECK_CFLAGS(-fPIE)
  938. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  939. fi
  940. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  941. fi
  942. if test "$fragile_hardening" = "yes"; then
  943. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  944. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  945. 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.])
  946. fi
  947. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  948. AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
  949. fi
  950. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  951. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  952. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.*, and with Clang you need libclang_rt.ubsan*])
  953. fi
  954. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  955. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  956. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
  957. fi
  958. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  959. fi
  960. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  961. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  962. mulodi_fixes_ftrapv=no
  963. if test "$have_clang" = "yes"; then
  964. saved_CFLAGS="$CFLAGS"
  965. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  966. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  967. AC_LINK_IFELSE([
  968. AC_LANG_SOURCE([[
  969. #include <stdint.h>
  970. #include <stdlib.h>
  971. int main(int argc, char **argv)
  972. {
  973. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  974. * (int64_t)atoi(argv[3]);
  975. return x == 9;
  976. } ]])],
  977. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  978. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  979. if test "$ftrapv_can_link" = "no"; then
  980. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  981. AC_LINK_IFELSE([
  982. AC_LANG_SOURCE([[
  983. #include <stdint.h>
  984. #include <stdlib.h>
  985. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  986. *overflow=0;
  987. return a;
  988. }
  989. int main(int argc, char **argv)
  990. {
  991. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  992. * (int64_t)atoi(argv[3]);
  993. return x == 9;
  994. } ]])],
  995. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  996. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  997. fi
  998. CFLAGS="$saved_CFLAGS"
  999. fi
  1000. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  1001. dnl These cflags add bunches of branches, and we haven't been able to
  1002. dnl persuade ourselves that they're suitable for code that needs to be
  1003. dnl constant time.
  1004. AC_SUBST(CFLAGS_BUGTRAP)
  1005. dnl These cflags are variant ones sutable for code that needs to be
  1006. dnl constant-time.
  1007. AC_SUBST(CFLAGS_CONSTTIME)
  1008. if test "x$enable_linker_hardening" != "xno"; then
  1009. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  1010. fi
  1011. # For backtrace support
  1012. TOR_CHECK_LDFLAGS(-rdynamic)
  1013. dnl ------------------------------------------------------
  1014. dnl Now see if we have a -fomit-frame-pointer compiler option.
  1015. saved_CFLAGS="$CFLAGS"
  1016. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  1017. F_OMIT_FRAME_POINTER=''
  1018. if test "$saved_CFLAGS" != "$CFLAGS"; then
  1019. if test "$fragile_hardening" = "yes"; then
  1020. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  1021. fi
  1022. fi
  1023. CFLAGS="$saved_CFLAGS"
  1024. AC_SUBST(F_OMIT_FRAME_POINTER)
  1025. dnl ------------------------------------------------------
  1026. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  1027. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  1028. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  1029. dnl code will work.
  1030. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  1031. dnl ============================================================
  1032. dnl Check for libseccomp
  1033. if test "x$enable_seccomp" != "xno"; then
  1034. AC_CHECK_HEADERS([seccomp.h])
  1035. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  1036. fi
  1037. dnl ============================================================
  1038. dnl Check for libscrypt
  1039. if test "x$enable_libscrypt" != "xno"; then
  1040. AC_CHECK_HEADERS([libscrypt.h])
  1041. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  1042. AC_CHECK_FUNCS([libscrypt_scrypt])
  1043. fi
  1044. dnl ============================================================
  1045. dnl We need an implementation of curve25519.
  1046. dnl set these defaults.
  1047. build_curve25519_donna=no
  1048. build_curve25519_donna_c64=no
  1049. use_curve25519_donna=no
  1050. use_curve25519_nacl=no
  1051. CURVE25519_LIBS=
  1052. dnl The best choice is using curve25519-donna-c64, but that requires
  1053. dnl that we
  1054. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  1055. tor_cv_can_use_curve25519_donna_c64,
  1056. [AC_RUN_IFELSE(
  1057. [AC_LANG_PROGRAM([dnl
  1058. #include <stdint.h>
  1059. typedef unsigned uint128_t __attribute__((mode(TI)));
  1060. int func(uint64_t a, uint64_t b) {
  1061. uint128_t c = ((uint128_t)a) * b;
  1062. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1063. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1064. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1065. (((uint64_t)(c))&0xffffffffL) == 0;
  1066. return ok;
  1067. }
  1068. ], [dnl
  1069. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1070. ((uint64_t)1234567890) << 24);
  1071. return !ok;
  1072. ])],
  1073. [tor_cv_can_use_curve25519_donna_c64=yes],
  1074. [tor_cv_can_use_curve25519_donna_c64=no],
  1075. [AC_LINK_IFELSE(
  1076. [AC_LANG_PROGRAM([dnl
  1077. #include <stdint.h>
  1078. typedef unsigned uint128_t __attribute__((mode(TI)));
  1079. int func(uint64_t a, uint64_t b) {
  1080. uint128_t c = ((uint128_t)a) * b;
  1081. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1082. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1083. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1084. (((uint64_t)(c))&0xffffffffL) == 0;
  1085. return ok;
  1086. }
  1087. ], [dnl
  1088. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1089. ((uint64_t)1234567890) << 24);
  1090. return !ok;
  1091. ])],
  1092. [tor_cv_can_use_curve25519_donna_c64=cross],
  1093. [tor_cv_can_use_curve25519_donna_c64=no])])])
  1094. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  1095. nacl/crypto_scalarmult_curve25519.h])
  1096. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  1097. tor_cv_can_use_curve25519_nacl,
  1098. [tor_saved_LIBS="$LIBS"
  1099. LIBS="$LIBS -lnacl"
  1100. AC_LINK_IFELSE(
  1101. [AC_LANG_PROGRAM([dnl
  1102. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  1103. #include <crypto_scalarmult_curve25519.h>
  1104. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  1105. #include <nacl/crypto_scalarmult_curve25519.h>
  1106. #endif
  1107. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  1108. #error Hey, this is the reference implementation! That's not fast.
  1109. #endif
  1110. ], [
  1111. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  1112. ])], [tor_cv_can_use_curve25519_nacl=yes],
  1113. [tor_cv_can_use_curve25519_nacl=no])
  1114. LIBS="$tor_saved_LIBS" ])
  1115. dnl Okay, now we need to figure out which one to actually use. Fall back
  1116. dnl to curve25519-donna.c
  1117. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  1118. build_curve25519_donna_c64=yes
  1119. use_curve25519_donna=yes
  1120. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  1121. use_curve25519_nacl=yes
  1122. CURVE25519_LIBS=-lnacl
  1123. else
  1124. build_curve25519_donna=yes
  1125. use_curve25519_donna=yes
  1126. fi
  1127. if test "x$use_curve25519_donna" = "xyes"; then
  1128. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  1129. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  1130. fi
  1131. if test "x$use_curve25519_nacl" = "xyes"; then
  1132. AC_DEFINE(USE_CURVE25519_NACL, 1,
  1133. [Defined if we should use a curve25519 from nacl])
  1134. fi
  1135. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  1136. test "x$build_curve25519_donna" = "xyes")
  1137. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  1138. test "x$build_curve25519_donna_c64" = "xyes")
  1139. AC_SUBST(CURVE25519_LIBS)
  1140. dnl Make sure to enable support for large off_t if available.
  1141. AC_SYS_LARGEFILE
  1142. AC_CHECK_HEADERS([assert.h \
  1143. errno.h \
  1144. fcntl.h \
  1145. signal.h \
  1146. string.h \
  1147. sys/capability.h \
  1148. sys/fcntl.h \
  1149. sys/stat.h \
  1150. sys/time.h \
  1151. sys/types.h \
  1152. time.h \
  1153. unistd.h \
  1154. arpa/inet.h \
  1155. crt_externs.h \
  1156. execinfo.h \
  1157. gnu/libc-version.h \
  1158. grp.h \
  1159. ifaddrs.h \
  1160. inttypes.h \
  1161. limits.h \
  1162. linux/types.h \
  1163. machine/limits.h \
  1164. malloc.h \
  1165. malloc/malloc.h \
  1166. malloc_np.h \
  1167. netdb.h \
  1168. netinet/in.h \
  1169. netinet/in6.h \
  1170. pwd.h \
  1171. readpassphrase.h \
  1172. stdint.h \
  1173. stdatomic.h \
  1174. sys/eventfd.h \
  1175. sys/file.h \
  1176. sys/ioctl.h \
  1177. sys/limits.h \
  1178. sys/mman.h \
  1179. sys/param.h \
  1180. sys/prctl.h \
  1181. sys/random.h \
  1182. sys/resource.h \
  1183. sys/select.h \
  1184. sys/socket.h \
  1185. sys/statvfs.h \
  1186. sys/syscall.h \
  1187. sys/sysctl.h \
  1188. sys/syslimits.h \
  1189. sys/time.h \
  1190. sys/types.h \
  1191. sys/un.h \
  1192. sys/utime.h \
  1193. sys/wait.h \
  1194. syslog.h \
  1195. utime.h])
  1196. AC_CHECK_HEADERS(sys/param.h)
  1197. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  1198. [#ifdef HAVE_SYS_TYPES_H
  1199. #include <sys/types.h>
  1200. #endif
  1201. #ifdef HAVE_SYS_SOCKET_H
  1202. #include <sys/socket.h>
  1203. #endif])
  1204. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  1205. [#ifdef HAVE_SYS_TYPES_H
  1206. #include <sys/types.h>
  1207. #endif
  1208. #ifdef HAVE_SYS_SOCKET_H
  1209. #include <sys/socket.h>
  1210. #endif
  1211. #ifdef HAVE_NET_IF_H
  1212. #include <net/if.h>
  1213. #endif
  1214. #ifdef HAVE_NETINET_IN_H
  1215. #include <netinet/in.h>
  1216. #endif])
  1217. AC_CHECK_HEADERS(linux/if.h,[],[],
  1218. [
  1219. #ifdef HAVE_SYS_SOCKET_H
  1220. #include <sys/socket.h>
  1221. #endif
  1222. ])
  1223. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  1224. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  1225. [#ifdef HAVE_SYS_TYPES_H
  1226. #include <sys/types.h>
  1227. #endif
  1228. #ifdef HAVE_SYS_SOCKET_H
  1229. #include <sys/socket.h>
  1230. #endif
  1231. #ifdef HAVE_LIMITS_H
  1232. #include <limits.h>
  1233. #endif
  1234. #ifdef HAVE_LINUX_TYPES_H
  1235. #include <linux/types.h>
  1236. #endif
  1237. #ifdef HAVE_NETINET_IN6_H
  1238. #include <netinet/in6.h>
  1239. #endif
  1240. #ifdef HAVE_NETINET_IN_H
  1241. #include <netinet/in.h>
  1242. #endif])
  1243. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  1244. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  1245. [#ifdef HAVE_SYS_TYPES_H
  1246. #include <sys/types.h>
  1247. #endif
  1248. #ifdef HAVE_SYS_SOCKET_H
  1249. #include <sys/socket.h>
  1250. #endif
  1251. #ifdef HAVE_LIMITS_H
  1252. #include <limits.h>
  1253. #endif
  1254. #ifdef HAVE_LINUX_TYPES_H
  1255. #include <linux/types.h>
  1256. #endif
  1257. #ifdef HAVE_NETINET_IN6_H
  1258. #include <netinet/in6.h>
  1259. #endif
  1260. #ifdef HAVE_NETINET_IN_H
  1261. #include <netinet/in.h>
  1262. #endif
  1263. #ifdef HAVE_LINUX_IF_H
  1264. #include <linux/if.h>
  1265. #endif])
  1266. transparent_ok=0
  1267. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  1268. transparent_ok=1
  1269. fi
  1270. if test "x$linux_netfilter_ipv4" = "x1"; then
  1271. transparent_ok=1
  1272. fi
  1273. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  1274. transparent_ok=1
  1275. fi
  1276. if test "x$transparent_ok" = "x1"; then
  1277. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  1278. else
  1279. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  1280. fi
  1281. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1282. [#ifdef HAVE_SYS_TYPES_H
  1283. #include <sys/types.h>
  1284. #endif
  1285. #ifdef HAVE_SYS_TIME_H
  1286. #include <sys/time.h>
  1287. #endif])
  1288. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  1289. dnl Watch out.
  1290. AC_CHECK_SIZEOF(int8_t)
  1291. AC_CHECK_SIZEOF(int16_t)
  1292. AC_CHECK_SIZEOF(int32_t)
  1293. AC_CHECK_SIZEOF(int64_t)
  1294. AC_CHECK_SIZEOF(uint8_t)
  1295. AC_CHECK_SIZEOF(uint16_t)
  1296. AC_CHECK_SIZEOF(uint32_t)
  1297. AC_CHECK_SIZEOF(uint64_t)
  1298. AC_CHECK_SIZEOF(intptr_t)
  1299. AC_CHECK_SIZEOF(uintptr_t)
  1300. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  1301. AC_CHECK_SIZEOF(char)
  1302. AC_CHECK_SIZEOF(short)
  1303. AC_CHECK_SIZEOF(int)
  1304. AC_CHECK_SIZEOF(long)
  1305. AC_CHECK_SIZEOF(long long)
  1306. AC_CHECK_SIZEOF(__int64)
  1307. AC_CHECK_SIZEOF(void *)
  1308. AC_CHECK_SIZEOF(time_t)
  1309. AC_CHECK_SIZEOF(size_t)
  1310. AC_CHECK_SIZEOF(pid_t)
  1311. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1312. AC_PC_FROM_UCONTEXT([:])
  1313. dnl used to include sockaddr_storage, but everybody has that.
  1314. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1315. [#ifdef HAVE_SYS_TYPES_H
  1316. #include <sys/types.h>
  1317. #endif
  1318. #ifdef HAVE_NETINET_IN_H
  1319. #include <netinet/in.h>
  1320. #endif
  1321. #ifdef HAVE_NETINET_IN6_H
  1322. #include <netinet/in6.h>
  1323. #endif
  1324. #ifdef HAVE_SYS_SOCKET_H
  1325. #include <sys/socket.h>
  1326. #endif
  1327. #ifdef _WIN32
  1328. #define _WIN32_WINNT 0x0501
  1329. #define WIN32_LEAN_AND_MEAN
  1330. #include <winsock2.h>
  1331. #include <ws2tcpip.h>
  1332. #endif
  1333. ])
  1334. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1335. [#ifdef HAVE_SYS_TYPES_H
  1336. #include <sys/types.h>
  1337. #endif
  1338. #ifdef HAVE_NETINET_IN_H
  1339. #include <netinet/in.h>
  1340. #endif
  1341. #ifdef HAVE_NETINET_IN6_H
  1342. #include <netinet/in6.h>
  1343. #endif
  1344. #ifdef HAVE_SYS_SOCKET_H
  1345. #include <sys/socket.h>
  1346. #endif
  1347. #ifdef _WIN32
  1348. #define _WIN32_WINNT 0x0501
  1349. #define WIN32_LEAN_AND_MEAN
  1350. #include <winsock2.h>
  1351. #include <ws2tcpip.h>
  1352. #endif
  1353. ])
  1354. AC_CHECK_TYPES([rlim_t], , ,
  1355. [#ifdef HAVE_SYS_TYPES_H
  1356. #include <sys/types.h>
  1357. #endif
  1358. #ifdef HAVE_SYS_TIME_H
  1359. #include <sys/time.h>
  1360. #endif
  1361. #ifdef HAVE_SYS_RESOURCE_H
  1362. #include <sys/resource.h>
  1363. #endif
  1364. ])
  1365. AX_CHECK_SIGN([time_t],
  1366. [ : ],
  1367. [ : ], [
  1368. #ifdef HAVE_SYS_TYPES_H
  1369. #include <sys/types.h>
  1370. #endif
  1371. #ifdef HAVE_SYS_TIME_H
  1372. #include <sys/time.h>
  1373. #endif
  1374. #ifdef HAVE_TIME_H
  1375. #include <time.h>
  1376. #endif
  1377. ])
  1378. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1379. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1380. fi
  1381. AX_CHECK_SIGN([size_t],
  1382. [ tor_cv_size_t_signed=yes ],
  1383. [ tor_cv_size_t_signed=no ], [
  1384. #ifdef HAVE_SYS_TYPES_H
  1385. #include <sys/types.h>
  1386. #endif
  1387. ])
  1388. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1389. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1390. fi
  1391. AX_CHECK_SIGN([enum always],
  1392. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1393. [ : ], [
  1394. enum always { AAA, BBB, CCC };
  1395. ])
  1396. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1397. #ifdef HAVE_SYS_SOCKET_H
  1398. #include <sys/socket.h>
  1399. #endif
  1400. ])
  1401. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1402. AC_CHECK_SIZEOF(cell_t)
  1403. # Now make sure that NULL can be represented as zero bytes.
  1404. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1405. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1406. [[#include <stdlib.h>
  1407. #include <string.h>
  1408. #include <stdio.h>
  1409. #ifdef HAVE_STDDEF_H
  1410. #include <stddef.h>
  1411. #endif
  1412. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1413. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1414. [tor_cv_null_is_zero=yes],
  1415. [tor_cv_null_is_zero=no],
  1416. [tor_cv_null_is_zero=cross])])
  1417. if test "$tor_cv_null_is_zero" = "cross"; then
  1418. # Cross-compiling; let's hope that the target isn't raving mad.
  1419. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1420. fi
  1421. if test "$tor_cv_null_is_zero" != "no"; then
  1422. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1423. [Define to 1 iff memset(0) sets pointers to NULL])
  1424. fi
  1425. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1426. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1427. [[#include <stdlib.h>
  1428. #include <string.h>
  1429. #include <stdio.h>
  1430. #ifdef HAVE_STDDEF_H
  1431. #include <stddef.h>
  1432. #endif
  1433. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1434. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1435. [tor_cv_dbl0_is_zero=yes],
  1436. [tor_cv_dbl0_is_zero=no],
  1437. [tor_cv_dbl0_is_zero=cross])])
  1438. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1439. # Cross-compiling; let's hope that the target isn't raving mad.
  1440. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1441. fi
  1442. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1443. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1444. [Define to 1 iff memset(0) sets doubles to 0.0])
  1445. fi
  1446. # And what happens when we malloc zero?
  1447. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1448. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1449. [[#include <stdlib.h>
  1450. #include <string.h>
  1451. #include <stdio.h>
  1452. #ifdef HAVE_STDDEF_H
  1453. #include <stddef.h>
  1454. #endif
  1455. int main () { return malloc(0)?0:1; }]])],
  1456. [tor_cv_malloc_zero_works=yes],
  1457. [tor_cv_malloc_zero_works=no],
  1458. [tor_cv_malloc_zero_works=cross])])
  1459. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1460. # Cross-compiling; let's hope that the target isn't raving mad.
  1461. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1462. fi
  1463. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1464. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1465. [Define to 1 iff malloc(0) returns a pointer])
  1466. fi
  1467. # whether we seem to be in a 2s-complement world.
  1468. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1469. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1470. [[int main () { int problem = ((-99) != (~99)+1);
  1471. return problem ? 1 : 0; }]])],
  1472. [tor_cv_twos_complement=yes],
  1473. [tor_cv_twos_complement=no],
  1474. [tor_cv_twos_complement=cross])])
  1475. if test "$tor_cv_twos_complement" = "cross"; then
  1476. # Cross-compiling; let's hope that the target isn't raving mad.
  1477. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1478. fi
  1479. if test "$tor_cv_twos_complement" != "no"; then
  1480. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1481. [Define to 1 iff we represent negative integers with
  1482. two's complement])
  1483. fi
  1484. # What does shifting a negative value do?
  1485. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1486. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1487. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1488. [tor_cv_sign_extend=yes],
  1489. [tor_cv_sign_extend=no],
  1490. [tor_cv_sign_extend=cross])])
  1491. if test "$tor_cv_sign_extend" = "cross"; then
  1492. # Cross-compiling; let's hope that the target isn't raving mad.
  1493. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1494. fi
  1495. if test "$tor_cv_sign_extend" != "no"; then
  1496. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1497. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1498. fi
  1499. # Is uint8_t the same type as unsigned char?
  1500. AC_CACHE_CHECK([whether uint8_t is the same type as unsigned char], tor_cv_uint8_uchar,
  1501. [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1502. #include <stdint.h>
  1503. extern uint8_t c;
  1504. unsigned char c;]])],
  1505. [tor_cv_uint8_uchar=yes],
  1506. [tor_cv_uint8_uchar=no],
  1507. [tor_cv_uint8_uchar=cross])])
  1508. if test "$tor_cv_uint8_uchar" = "cross"; then
  1509. AC_MSG_NOTICE([Cross-compiling: we'll assume that uint8_t is the same type as unsigned char])
  1510. fi
  1511. if test "$tor_cv_uint8_uchar" = "no"; then
  1512. AC_MSG_ERROR([We assume that uint8_t is the same type as unsigned char, but your compiler disagrees.])
  1513. fi
  1514. # Whether we should use the dmalloc memory allocation debugging library.
  1515. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1516. AC_ARG_WITH(dmalloc,
  1517. AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
  1518. [if [[ "$withval" = "yes" ]]; then
  1519. dmalloc=1
  1520. AC_MSG_RESULT(yes)
  1521. else
  1522. dmalloc=1
  1523. AC_MSG_RESULT(no)
  1524. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1525. )
  1526. if [[ $dmalloc -eq 1 ]]; then
  1527. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1528. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1529. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1530. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1531. fi
  1532. AC_ARG_WITH(tcmalloc,
  1533. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
  1534. [ tcmalloc=yes ], [ tcmalloc=no ])
  1535. if test "x$tcmalloc" = "xyes"; then
  1536. LDFLAGS="-ltcmalloc $LDFLAGS"
  1537. fi
  1538. using_custom_malloc=no
  1539. if test "x$enable_openbsd_malloc" = "xyes"; then
  1540. using_custom_malloc=yes
  1541. fi
  1542. if test "x$tcmalloc" = "xyes"; then
  1543. using_custom_malloc=yes
  1544. fi
  1545. if test "$using_custom_malloc" = "no"; then
  1546. AC_CHECK_FUNCS(mallinfo)
  1547. fi
  1548. # By default, we're going to assume we don't have mlockall()
  1549. # bionic and other platforms have various broken mlockall subsystems.
  1550. # Some systems don't have a working mlockall, some aren't linkable,
  1551. # and some have it but don't declare it.
  1552. AC_CHECK_FUNCS(mlockall)
  1553. AC_CHECK_DECLS([mlockall], , , [
  1554. #ifdef HAVE_SYS_MMAN_H
  1555. #include <sys/mman.h>
  1556. #endif])
  1557. # Allow user to specify an alternate syslog facility
  1558. AC_ARG_WITH(syslog-facility,
  1559. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1560. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1561. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1562. AC_SUBST(LOGFACILITY)
  1563. # Check if we have getresuid and getresgid
  1564. AC_CHECK_FUNCS(getresuid getresgid)
  1565. # Check for gethostbyname_r in all its glorious incompatible versions.
  1566. # (This logic is based on that in Python's configure.in)
  1567. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1568. [Define this if you have any gethostbyname_r()])
  1569. AC_CHECK_FUNC(gethostbyname_r, [
  1570. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1571. OLD_CFLAGS=$CFLAGS
  1572. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1573. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1574. #include <netdb.h>
  1575. ]], [[
  1576. char *cp1, *cp2;
  1577. struct hostent *h1, *h2;
  1578. int i1, i2;
  1579. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1580. ]])],[
  1581. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1582. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1583. [Define this if gethostbyname_r takes 6 arguments])
  1584. AC_MSG_RESULT(6)
  1585. ], [
  1586. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1587. #include <netdb.h>
  1588. ]], [[
  1589. char *cp1, *cp2;
  1590. struct hostent *h1;
  1591. int i1, i2;
  1592. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1593. ]])], [
  1594. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1595. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1596. [Define this if gethostbyname_r takes 5 arguments])
  1597. AC_MSG_RESULT(5)
  1598. ], [
  1599. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1600. #include <netdb.h>
  1601. ]], [[
  1602. char *cp1;
  1603. struct hostent *h1;
  1604. struct hostent_data hd;
  1605. (void) gethostbyname_r(cp1,h1,&hd);
  1606. ]])], [
  1607. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1608. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1609. [Define this if gethostbyname_r takes 3 arguments])
  1610. AC_MSG_RESULT(3)
  1611. ], [
  1612. AC_MSG_RESULT(0)
  1613. ])
  1614. ])
  1615. ])
  1616. CFLAGS=$OLD_CFLAGS
  1617. ])
  1618. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1619. tor_cv_have_func_macro,
  1620. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1621. #include <stdio.h>
  1622. int main(int c, char **v) { puts(__func__); }])],
  1623. tor_cv_have_func_macro=yes,
  1624. tor_cv_have_func_macro=no))
  1625. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1626. tor_cv_have_FUNC_macro,
  1627. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1628. #include <stdio.h>
  1629. int main(int c, char **v) { puts(__FUNC__); }])],
  1630. tor_cv_have_FUNC_macro=yes,
  1631. tor_cv_have_FUNC_macro=no))
  1632. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1633. tor_cv_have_FUNCTION_macro,
  1634. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1635. #include <stdio.h>
  1636. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1637. tor_cv_have_FUNCTION_macro=yes,
  1638. tor_cv_have_FUNCTION_macro=no))
  1639. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1640. tor_cv_have_environ_declared,
  1641. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1642. #ifdef HAVE_UNISTD_H
  1643. #include <unistd.h>
  1644. #endif
  1645. #include <stdlib.h>
  1646. int main(int c, char **v) { char **t = environ; }])],
  1647. tor_cv_have_environ_declared=yes,
  1648. tor_cv_have_environ_declared=no))
  1649. if test "$tor_cv_have_func_macro" = "yes"; then
  1650. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1651. fi
  1652. if test "$tor_cv_have_FUNC_macro" = "yes"; then
  1653. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1654. fi
  1655. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1656. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1657. [Defined if the compiler supports __FUNCTION__])
  1658. fi
  1659. if test "$tor_cv_have_environ_declared" = "yes"; then
  1660. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1661. [Defined if we have extern char **environ already declared])
  1662. fi
  1663. # $prefix stores the value of the --prefix command line option, or
  1664. # NONE if the option wasn't set. In the case that it wasn't set, make
  1665. # it be the default, so that we can use it to expand directories now.
  1666. if test "x$prefix" = "xNONE"; then
  1667. prefix=$ac_default_prefix
  1668. fi
  1669. # and similarly for $exec_prefix
  1670. if test "x$exec_prefix" = "xNONE"; then
  1671. exec_prefix=$prefix
  1672. fi
  1673. if test "x$BUILDDIR" = "x"; then
  1674. BUILDDIR=`pwd`
  1675. fi
  1676. AC_SUBST(BUILDDIR)
  1677. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1678. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1679. if test "x$SRCDIR" = "x"; then
  1680. SRCDIR=$(cd "$srcdir"; pwd)
  1681. fi
  1682. AH_TEMPLATE([SRCDIR],[tor's sourcedir directory])
  1683. AC_DEFINE_UNQUOTED(SRCDIR,"$SRCDIR")
  1684. if test "x$CONFDIR" = "x"; then
  1685. CONFDIR=`eval echo $sysconfdir/tor`
  1686. fi
  1687. AC_SUBST(CONFDIR)
  1688. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1689. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1690. BINDIR=`eval echo $bindir`
  1691. AC_SUBST(BINDIR)
  1692. LOCALSTATEDIR=`eval echo $localstatedir`
  1693. AC_SUBST(LOCALSTATEDIR)
  1694. if test "$bwin32" = "true"; then
  1695. # Test if the linker supports the --nxcompat and --dynamicbase options
  1696. # for Windows
  1697. save_LDFLAGS="$LDFLAGS"
  1698. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1699. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1700. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1701. [AC_MSG_RESULT([yes])]
  1702. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1703. [AC_MSG_RESULT([no])]
  1704. )
  1705. LDFLAGS="$save_LDFLAGS"
  1706. fi
  1707. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1708. # than autoconf's macros like.
  1709. if test "$GCC" = "yes"; then
  1710. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1711. # accident waiting to happen.
  1712. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1713. else
  1714. # Override optimization level for non-gcc compilers
  1715. CFLAGS="$CFLAGS -O"
  1716. enable_gcc_warnings=no
  1717. enable_gcc_warnings_advisory=no
  1718. fi
  1719. # Warnings implies advisory-warnings and -Werror.
  1720. if test "$enable_gcc_warnings" = "yes"; then
  1721. enable_gcc_warnings_advisory=yes
  1722. enable_fatal_warnings=yes
  1723. fi
  1724. # OS X Lion started deprecating the system openssl. Let's just disable
  1725. # all deprecation warnings on OS X. Also, to potentially make the binary
  1726. # a little smaller, let's enable dead_strip.
  1727. case "$host_os" in
  1728. darwin*)
  1729. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1730. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1731. esac
  1732. # Add some more warnings which we use in development but not in the
  1733. # released versions. (Some relevant gcc versions can't handle these.)
  1734. #
  1735. # Note that we have to do this near the end of the autoconf process, or
  1736. # else we may run into problems when these warnings hit on the testing C
  1737. # programs that autoconf wants to build.
  1738. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1739. case "$host" in
  1740. *-*-openbsd* | *-*-bitrig*)
  1741. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1742. # That's fine, except that the headers don't pass -Wredundant-decls.
  1743. # Therefore, let's disable -Wsystem-headers when we're building
  1744. # with maximal warnings on OpenBSD.
  1745. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1746. esac
  1747. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1748. # have it work better.
  1749. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1750. # This warning was added in gcc 4.3, but it appears to generate
  1751. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1752. #CFLAGS="$CFLAGS -Wlogical-op"
  1753. m4_foreach_w([warning_flag], [
  1754. -Waddress
  1755. -Waddress-of-array-temporary
  1756. -Waddress-of-temporary
  1757. -Wambiguous-macro
  1758. -Wanonymous-pack-parens
  1759. -Warc
  1760. -Warc-abi
  1761. -Warc-bridge-casts-disallowed-in-nonarc
  1762. -Warc-maybe-repeated-use-of-weak
  1763. -Warc-performSelector-leaks
  1764. -Warc-repeated-use-of-weak
  1765. -Warray-bounds
  1766. -Warray-bounds-pointer-arithmetic
  1767. -Wasm
  1768. -Wasm-operand-widths
  1769. -Watomic-properties
  1770. -Watomic-property-with-user-defined-accessor
  1771. -Wauto-import
  1772. -Wauto-storage-class
  1773. -Wauto-var-id
  1774. -Wavailability
  1775. -Wbackslash-newline-escape
  1776. -Wbad-array-new-length
  1777. -Wbind-to-temporary-copy
  1778. -Wbitfield-constant-conversion
  1779. -Wbool-conversion
  1780. -Wbool-conversions
  1781. -Wbuiltin-requires-header
  1782. -Wchar-align
  1783. -Wcompare-distinct-pointer-types
  1784. -Wcomplex-component-init
  1785. -Wconditional-type-mismatch
  1786. -Wconfig-macros
  1787. -Wconstant-conversion
  1788. -Wconstant-logical-operand
  1789. -Wconstexpr-not-const
  1790. -Wcustom-atomic-properties
  1791. -Wdangling-field
  1792. -Wdangling-initializer-list
  1793. -Wdate-time
  1794. -Wdelegating-ctor-cycles
  1795. -Wdeprecated-implementations
  1796. -Wdeprecated-register
  1797. -Wdirect-ivar-access
  1798. -Wdiscard-qual
  1799. -Wdistributed-object-modifiers
  1800. -Wdivision-by-zero
  1801. -Wdollar-in-identifier-extension
  1802. -Wdouble-promotion
  1803. -Wduplicate-decl-specifier
  1804. -Wduplicate-enum
  1805. -Wduplicate-method-arg
  1806. -Wduplicate-method-match
  1807. -Wduplicated-cond
  1808. -Wdynamic-class-memaccess
  1809. -Wembedded-directive
  1810. -Wempty-translation-unit
  1811. -Wenum-conversion
  1812. -Wexit-time-destructors
  1813. -Wexplicit-ownership-type
  1814. -Wextern-initializer
  1815. -Wextra
  1816. -Wextra-semi
  1817. -Wextra-tokens
  1818. -Wflexible-array-extensions
  1819. -Wfloat-conversion
  1820. -Wformat-non-iso
  1821. -Wfour-char-constants
  1822. -Wgcc-compat
  1823. -Wglobal-constructors
  1824. -Wgnu-array-member-paren-init
  1825. -Wgnu-designator
  1826. -Wgnu-static-float-init
  1827. -Wheader-guard
  1828. -Wheader-hygiene
  1829. -Widiomatic-parentheses
  1830. -Wignored-attributes
  1831. -Wimplicit-atomic-properties
  1832. -Wimplicit-conversion-floating-point-to-bool
  1833. -Wimplicit-exception-spec-mismatch
  1834. -Wimplicit-fallthrough
  1835. -Wimplicit-fallthrough-per-function
  1836. -Wimplicit-retain-self
  1837. -Wimport-preprocessor-directive-pedantic
  1838. -Wincompatible-library-redeclaration
  1839. -Wincompatible-pointer-types-discards-qualifiers
  1840. -Wincomplete-implementation
  1841. -Wincomplete-module
  1842. -Wincomplete-umbrella
  1843. -Winit-self
  1844. -Wint-conversions
  1845. -Wint-to-void-pointer-cast
  1846. -Winteger-overflow
  1847. -Winvalid-constexpr
  1848. -Winvalid-iboutlet
  1849. -Winvalid-noreturn
  1850. -Winvalid-pp-token
  1851. -Winvalid-source-encoding
  1852. -Winvalid-token-paste
  1853. -Wknr-promoted-parameter
  1854. -Wlarge-by-value-copy
  1855. -Wliteral-conversion
  1856. -Wliteral-range
  1857. -Wlocal-type-template-args
  1858. -Wlogical-op
  1859. -Wloop-analysis
  1860. -Wmain-return-type
  1861. -Wmalformed-warning-check
  1862. -Wmethod-signatures
  1863. -Wmicrosoft
  1864. -Wmicrosoft-exists
  1865. -Wmismatched-parameter-types
  1866. -Wmismatched-return-types
  1867. -Wmissing-field-initializers
  1868. -Wmissing-format-attribute
  1869. -Wmissing-noreturn
  1870. -Wmissing-selector-name
  1871. -Wmissing-sysroot
  1872. -Wmissing-variable-declarations
  1873. -Wmodule-conflict
  1874. -Wnested-anon-types
  1875. -Wnewline-eof
  1876. -Wnon-literal-null-conversion
  1877. -Wnon-pod-varargs
  1878. -Wnonportable-cfstrings
  1879. -Wnormalized=nfkc
  1880. -Wnull-arithmetic
  1881. -Wnull-character
  1882. -Wnull-conversion
  1883. -Wnull-dereference
  1884. -Wout-of-line-declaration
  1885. -Wover-aligned
  1886. -Woverlength-strings
  1887. -Woverride-init
  1888. -Woverriding-method-mismatch
  1889. -Wpointer-type-mismatch
  1890. -Wpredefined-identifier-outside-function
  1891. -Wprotocol-property-synthesis-ambiguity
  1892. -Wreadonly-iboutlet-property
  1893. -Wreadonly-setter-attrs
  1894. -Wreceiver-expr
  1895. -Wreceiver-forward-class
  1896. -Wreceiver-is-weak
  1897. -Wreinterpret-base-class
  1898. -Wrequires-super-attribute
  1899. -Wreserved-user-defined-literal
  1900. -Wreturn-stack-address
  1901. -Wsection
  1902. -Wselector-type-mismatch
  1903. -Wsentinel
  1904. -Wserialized-diagnostics
  1905. -Wshadow
  1906. -Wshift-count-negative
  1907. -Wshift-count-overflow
  1908. -Wshift-negative-value
  1909. -Wshift-overflow=2
  1910. -Wshift-sign-overflow
  1911. -Wshorten-64-to-32
  1912. -Wsizeof-array-argument
  1913. -Wsource-uses-openmp
  1914. -Wstatic-float-init
  1915. -Wstatic-in-inline
  1916. -Wstatic-local-in-inline
  1917. -Wstrict-overflow=1
  1918. -Wstring-compare
  1919. -Wstring-conversion
  1920. -Wstrlcpy-strlcat-size
  1921. -Wstrncat-size
  1922. -Wsuggest-attribute=format
  1923. -Wsuggest-attribute=noreturn
  1924. -Wsuper-class-method-mismatch
  1925. -Wswitch-bool
  1926. -Wsync-nand
  1927. -Wtautological-constant-out-of-range-compare
  1928. -Wtentative-definition-incomplete-type
  1929. -Wtrampolines
  1930. -Wtype-safety
  1931. -Wtypedef-redefinition
  1932. -Wtypename-missing
  1933. -Wundefined-inline
  1934. -Wundefined-internal
  1935. -Wundefined-reinterpret-cast
  1936. -Wunicode
  1937. -Wunicode-whitespace
  1938. -Wunknown-warning-option
  1939. -Wunnamed-type-template-args
  1940. -Wunneeded-member-function
  1941. -Wunsequenced
  1942. -Wunsupported-visibility
  1943. -Wunused-but-set-parameter
  1944. -Wunused-but-set-variable
  1945. -Wunused-command-line-argument
  1946. -Wunused-const-variable=2
  1947. -Wunused-exception-parameter
  1948. -Wunused-local-typedefs
  1949. -Wunused-member-function
  1950. -Wunused-sanitize-argument
  1951. -Wunused-volatile-lvalue
  1952. -Wuser-defined-literals
  1953. -Wvariadic-macros
  1954. -Wvector-conversion
  1955. -Wvector-conversions
  1956. -Wvexing-parse
  1957. -Wvisibility
  1958. -Wvla-extension
  1959. -Wzero-length-array
  1960. ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
  1961. dnl We should re-enable this in some later version. Clang doesn't
  1962. dnl mind, but it causes trouble with GCC.
  1963. dnl -Wstrict-overflow=2
  1964. dnl These seem to require annotations that we don't currently use,
  1965. dnl and they give false positives in our pthreads wrappers. (Clang 4)
  1966. dnl -Wthread-safety
  1967. dnl -Wthread-safety-analysis
  1968. dnl -Wthread-safety-attributes
  1969. dnl -Wthread-safety-beta
  1970. dnl -Wthread-safety-precise
  1971. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1972. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1973. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1974. CFLAGS="$CFLAGS -Wwrite-strings"
  1975. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1976. CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
  1977. CFLAGS="$CFLAGS -Wunused-parameter "
  1978. # These interfere with building main() { return 0; }, which autoconf
  1979. # likes to use as its default program.
  1980. CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
  1981. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  1982. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  1983. fi
  1984. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  1985. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  1986. fi
  1987. if test "x$enable_fatal_warnings" = "xyes"; then
  1988. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  1989. # default autoconf programs are full of errors.
  1990. CFLAGS="$CFLAGS -Werror"
  1991. fi
  1992. fi
  1993. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  1994. case "$host_os" in
  1995. darwin*)
  1996. AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
  1997. esac
  1998. fi
  1999. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  2000. AC_CONFIG_FILES([
  2001. Doxyfile
  2002. Makefile
  2003. contrib/dist/suse/tor.sh
  2004. contrib/operator-tools/tor.logrotate
  2005. contrib/dist/tor.sh
  2006. contrib/dist/torctl
  2007. contrib/dist/tor.service
  2008. src/config/torrc.sample
  2009. src/config/torrc.minimal
  2010. src/rust/.cargo/config
  2011. scripts/maint/checkOptionDocs.pl
  2012. scripts/maint/updateVersions.pl
  2013. ])
  2014. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  2015. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  2016. for file in $regular_mans ; do
  2017. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  2018. echo "==================================";
  2019. echo;
  2020. echo "Building Tor has failed since manpages cannot be built.";
  2021. echo;
  2022. echo "You need asciidoc installed to be able to build the manpages.";
  2023. echo "To build without manpages, use the --disable-asciidoc argument";
  2024. echo "when calling configure.";
  2025. echo;
  2026. echo "==================================";
  2027. exit 1;
  2028. fi
  2029. done
  2030. fi
  2031. if test "$fragile_hardening" = "yes"; then
  2032. AC_MSG_WARN([
  2033. ============
  2034. Warning! Building Tor with --enable-fragile-hardening (also known as
  2035. --enable-expensive-hardening) makes some kinds of attacks harder, but makes
  2036. other kinds of attacks easier. A Tor instance build with this option will be
  2037. somewhat less vulnerable to remote code execution, arithmetic overflow, or
  2038. out-of-bounds read/writes... but at the cost of becoming more vulnerable to
  2039. denial of service attacks. For more information, see
  2040. https://trac.torproject.org/projects/tor/wiki/doc/TorFragileHardening
  2041. ============
  2042. ])
  2043. fi
  2044. AC_OUTPUT