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],[0.3.4.2-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$PYTHON" != "x"])
  258. dnl List all external rust crates we depend on here. Include the version
  259. rust_crates=" \
  260. digest-0.7.2 \
  261. libc-0.2.39 \
  262. "
  263. AC_SUBST(rust_crates)
  264. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  265. AC_C_FLEXIBLE_ARRAY_MEMBER
  266. ], [
  267. dnl Maybe we've got an old autoconf...
  268. AC_CACHE_CHECK([for flexible array members],
  269. tor_cv_c_flexarray,
  270. [AC_COMPILE_IFELSE(
  271. AC_LANG_PROGRAM([
  272. struct abc { int a; char b[]; };
  273. ], [
  274. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  275. def->b[0] = 33;
  276. ]),
  277. [tor_cv_c_flexarray=yes],
  278. [tor_cv_c_flexarray=no])])
  279. if test "$tor_cv_flexarray" = "yes"; then
  280. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  281. else
  282. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  283. fi
  284. ])
  285. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  286. tor_cv_c_c99_decl,
  287. [AC_COMPILE_IFELSE(
  288. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  289. [tor_cv_c_c99_decl=yes],
  290. [tor_cv_c_c99_decl=no] )])
  291. if test "$tor_cv_c_c99_decl" != "yes"; then
  292. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  293. fi
  294. AC_CACHE_CHECK([for working C99 designated initializers],
  295. tor_cv_c_c99_designated_init,
  296. [AC_COMPILE_IFELSE(
  297. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  298. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  299. [tor_cv_c_c99_designated_init=yes],
  300. [tor_cv_c_c99_designated_init=no] )])
  301. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  302. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  303. fi
  304. TORUSER=_tor
  305. AC_ARG_WITH(tor-user,
  306. AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
  307. [
  308. TORUSER=$withval
  309. ]
  310. )
  311. AC_SUBST(TORUSER)
  312. TORGROUP=_tor
  313. AC_ARG_WITH(tor-group,
  314. AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
  315. [
  316. TORGROUP=$withval
  317. ]
  318. )
  319. AC_SUBST(TORGROUP)
  320. dnl If _WIN32 is defined and non-zero, we are building for win32
  321. AC_MSG_CHECKING([for win32])
  322. AC_RUN_IFELSE([AC_LANG_SOURCE([
  323. int main(int c, char **v) {
  324. #ifdef _WIN32
  325. #if _WIN32
  326. return 0;
  327. #else
  328. return 1;
  329. #endif
  330. #else
  331. return 2;
  332. #endif
  333. }])],
  334. bwin32=true; AC_MSG_RESULT([yes]),
  335. bwin32=false; AC_MSG_RESULT([no]),
  336. bwin32=cross; AC_MSG_RESULT([cross])
  337. )
  338. if test "$bwin32" = "cross"; then
  339. AC_MSG_CHECKING([for win32 (cross)])
  340. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  341. #ifdef _WIN32
  342. int main(int c, char **v) {return 0;}
  343. #else
  344. #error
  345. int main(int c, char **v) {return x(y);}
  346. #endif
  347. ])],
  348. bwin32=true; AC_MSG_RESULT([yes]),
  349. bwin32=false; AC_MSG_RESULT([no]))
  350. fi
  351. AH_BOTTOM([
  352. #ifdef _WIN32
  353. /* Defined to access windows functions and definitions for >=WinXP */
  354. # ifndef WINVER
  355. # define WINVER 0x0501
  356. # endif
  357. /* Defined to access _other_ windows functions and definitions for >=WinXP */
  358. # ifndef _WIN32_WINNT
  359. # define _WIN32_WINNT 0x0501
  360. # endif
  361. /* Defined to avoid including some windows headers as part of Windows.h */
  362. # ifndef WIN32_LEAN_AND_MEAN
  363. # define WIN32_LEAN_AND_MEAN 1
  364. # endif
  365. #endif
  366. ])
  367. AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
  368. AM_CONDITIONAL(BUILD_LIBTORRUNNER, test "x$bwin32" != "xtrue")
  369. dnl Enable C99 when compiling with MIPSpro
  370. AC_MSG_CHECKING([for MIPSpro compiler])
  371. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  372. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  373. #error
  374. return x(y);
  375. #endif
  376. ])],
  377. bmipspro=false; AC_MSG_RESULT(no),
  378. bmipspro=true; AC_MSG_RESULT(yes))
  379. if test "$bmipspro" = "true"; then
  380. CFLAGS="$CFLAGS -c99"
  381. fi
  382. AC_C_BIGENDIAN
  383. if test "x$enable_rust" = "xyes"; then
  384. AC_ARG_VAR([RUSTC], [path to the rustc binary])
  385. AC_CHECK_PROG([RUSTC], [rustc], [rustc],[no])
  386. if test "x$RUSTC" = "xno"; then
  387. AC_MSG_ERROR([rustc unavailable but rust integration requested.])
  388. fi
  389. AC_ARG_VAR([CARGO], [path to the cargo binary])
  390. AC_CHECK_PROG([CARGO], [cargo], [cargo],[no])
  391. if test "x$CARGO" = "xno"; then
  392. AC_MSG_ERROR([cargo unavailable but rust integration requested.])
  393. fi
  394. AC_DEFINE([HAVE_RUST], 1, [have Rust])
  395. if test "x$enable_cargo_online_mode" = "xyes"; then
  396. CARGO_ONLINE=
  397. RUST_DL=#
  398. else
  399. CARGO_ONLINE=--frozen
  400. RUST_DL=
  401. dnl When we're not allowed to touch the network, we need crate dependencies
  402. dnl locally available.
  403. AC_MSG_CHECKING([rust crate dependencies])
  404. AC_ARG_VAR([TOR_RUST_DEPENDENCIES], [path to directory with local crate mirror])
  405. if test "x$TOR_RUST_DEPENDENCIES" = "x"; then
  406. TOR_RUST_DEPENDENCIES="${srcdir}/src/ext/rust/crates"
  407. fi
  408. dnl Check whether the path exists before we try to cd into it.
  409. if test ! -d "$TOR_RUST_DEPENDENCIES"; then
  410. AC_MSG_ERROR([Rust dependency directory $TOR_RUST_DEPENDENCIES does not exist. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
  411. ERRORED=1
  412. fi
  413. dnl Make the path absolute, since we'll be using it from within a
  414. dnl subdirectory.
  415. TOR_RUST_DEPENDENCIES=$(cd "$TOR_RUST_DEPENDENCIES" ; pwd)
  416. for dep in $rust_crates; do
  417. if test ! -d "$TOR_RUST_DEPENDENCIES"/"$dep"; then
  418. 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.])
  419. ERRORED=1
  420. fi
  421. done
  422. if test "x$ERRORED" = "x"; then
  423. AC_MSG_RESULT([yes])
  424. fi
  425. fi
  426. dnl This is a workaround for #46797
  427. dnl (a.k.a https://github.com/rust-lang/rust/issues/46797 ). Once the
  428. dnl upstream bug is fixed, we can remove this workaround.
  429. case "$host_os" in
  430. darwin*)
  431. TOR_RUST_EXTRA_LIBS="-lresolv"
  432. ;;
  433. esac
  434. dnl For now both MSVC and MinGW rust libraries will output static libs with
  435. dnl the MSVC naming convention.
  436. if test "$bwin32" = "true"; then
  437. TOR_RUST_STATIC_NAME=tor_rust.lib
  438. else
  439. TOR_RUST_STATIC_NAME=libtor_rust.a
  440. fi
  441. AC_SUBST(TOR_RUST_STATIC_NAME)
  442. AC_SUBST(CARGO_ONLINE)
  443. AC_SUBST(RUST_DL)
  444. dnl Let's check the rustc version, too
  445. AC_MSG_CHECKING([rust version])
  446. RUSTC_VERSION=`$RUSTC --version`
  447. RUSTC_VERSION_MAJOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 1`
  448. RUSTC_VERSION_MINOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 2`
  449. if test "x$RUSTC_VERSION_MAJOR" = "x" -o "x$RUSTC_VERSION_MINOR" = "x"; then
  450. AC_MSG_ERROR([rustc version couldn't be identified])
  451. fi
  452. if test "$RUSTC_VERSION_MAJOR" -lt 2 -a "$RUSTC_VERSION_MINOR" -lt 14; then
  453. AC_MSG_ERROR([rustc must be at least version 1.14])
  454. fi
  455. AC_MSG_RESULT([$RUSTC_VERSION])
  456. fi
  457. AC_SUBST(TOR_RUST_EXTRA_LIBS)
  458. AC_SEARCH_LIBS(socket, [socket network])
  459. AC_SEARCH_LIBS(gethostbyname, [nsl])
  460. AC_SEARCH_LIBS(dlopen, [dl])
  461. AC_SEARCH_LIBS(inet_aton, [resolv])
  462. AC_SEARCH_LIBS(backtrace, [execinfo])
  463. saved_LIBS="$LIBS"
  464. AC_SEARCH_LIBS([clock_gettime], [rt])
  465. if test "$LIBS" != "$saved_LIBS"; then
  466. # Looks like we need -lrt for clock_gettime().
  467. have_rt=yes
  468. fi
  469. AC_SEARCH_LIBS(pthread_create, [pthread])
  470. AC_SEARCH_LIBS(pthread_detach, [pthread])
  471. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  472. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  473. AC_CHECK_FUNCS(
  474. _NSGetEnviron \
  475. RtlSecureZeroMemory \
  476. SecureZeroMemory \
  477. accept4 \
  478. backtrace \
  479. backtrace_symbols_fd \
  480. eventfd \
  481. explicit_bzero \
  482. timingsafe_memcmp \
  483. flock \
  484. ftime \
  485. get_current_dir_name \
  486. getaddrinfo \
  487. getifaddrs \
  488. getpass \
  489. getrlimit \
  490. gettimeofday \
  491. gmtime_r \
  492. gnu_get_libc_version \
  493. htonll \
  494. inet_aton \
  495. ioctl \
  496. issetugid \
  497. llround \
  498. localtime_r \
  499. lround \
  500. mach_approximate_time \
  501. memmem \
  502. memset_s \
  503. mmap \
  504. pipe \
  505. pipe2 \
  506. prctl \
  507. readpassphrase \
  508. rint \
  509. sigaction \
  510. socketpair \
  511. statvfs \
  512. strlcat \
  513. strlcpy \
  514. strnlen \
  515. strptime \
  516. strtok_r \
  517. strtoull \
  518. sysconf \
  519. sysctl \
  520. truncate \
  521. uname \
  522. usleep \
  523. vasprintf \
  524. _vscprintf
  525. )
  526. # Apple messed up when they added two functions functions in Sierra: they
  527. # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
  528. # checks. So we should only probe for those functions if we are sure that we
  529. # are not targeting OSX 10.11 or earlier.
  530. AC_MSG_CHECKING([for a pre-Sierra OSX build target])
  531. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  532. #ifdef __APPLE__
  533. # include <AvailabilityMacros.h>
  534. # ifndef MAC_OS_X_VERSION_10_12
  535. # define MAC_OS_X_VERSION_10_12 101200
  536. # endif
  537. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  538. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  539. # error "Running on Mac OSX 10.11 or earlier"
  540. # endif
  541. # endif
  542. #endif
  543. ]], [[]])],
  544. [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
  545. [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
  546. if test "$on_macos_pre_10_12" = "no"; then
  547. AC_CHECK_FUNCS(
  548. clock_gettime \
  549. getentropy \
  550. )
  551. fi
  552. if test "$bwin32" != "true"; then
  553. AC_CHECK_HEADERS(pthread.h)
  554. AC_CHECK_FUNCS(pthread_create)
  555. AC_CHECK_FUNCS(pthread_condattr_setclock)
  556. fi
  557. if test "$bwin32" = "true"; then
  558. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  559. #include <windows.h>
  560. #include <conio.h>
  561. #include <wchar.h>
  562. ])
  563. fi
  564. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  565. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  566. AC_MSG_CHECKING([whether free(NULL) works])
  567. AC_RUN_IFELSE([AC_LANG_PROGRAM([
  568. #include <stdlib.h>
  569. ], [
  570. char *p = NULL;
  571. free(p);
  572. ])],
  573. [free_null_ok=true; AC_MSG_RESULT(yes)],
  574. [free_null_ok=false; AC_MSG_RESULT(no)],
  575. [free_null_ok=cross; AC_MSG_RESULT(cross)])
  576. if test "$free_null_ok" = "false"; then
  577. AC_MSG_ERROR([Your libc implementation doesn't allow free(NULL), as required by C99.])
  578. fi
  579. dnl ------------------------------------------------------
  580. dnl Where do you live, libevent? And how do we call you?
  581. if test "$bwin32" = "true"; then
  582. TOR_LIB_WS32=-lws2_32
  583. TOR_LIB_IPHLPAPI=-liphlpapi
  584. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  585. # think it's actually necessary.
  586. TOR_LIB_GDI=-lgdi32
  587. TOR_LIB_USERENV=-luserenv
  588. else
  589. TOR_LIB_WS32=
  590. TOR_LIB_GDI=
  591. TOR_LIB_USERENV=
  592. fi
  593. AC_SUBST(TOR_LIB_WS32)
  594. AC_SUBST(TOR_LIB_GDI)
  595. AC_SUBST(TOR_LIB_IPHLPAPI)
  596. AC_SUBST(TOR_LIB_USERENV)
  597. tor_libevent_pkg_redhat="libevent"
  598. tor_libevent_pkg_debian="libevent-dev"
  599. tor_libevent_devpkg_redhat="libevent-devel"
  600. tor_libevent_devpkg_debian="libevent-dev"
  601. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  602. dnl linking for static builds.
  603. STATIC_LIBEVENT_FLAGS=""
  604. if test "$enable_static_libevent" = "yes"; then
  605. if test "$have_rt" = "yes"; then
  606. STATIC_LIBEVENT_FLAGS=" -lrt "
  607. fi
  608. fi
  609. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  610. #ifdef _WIN32
  611. #include <winsock2.h>
  612. #endif
  613. #include <sys/time.h>
  614. #include <sys/types.h>
  615. #include <event2/event.h>], [
  616. #ifdef _WIN32
  617. #include <winsock2.h>
  618. #endif
  619. struct event_base;
  620. struct event_base *event_base_new(void);
  621. void event_base_free(struct event_base *);],
  622. [
  623. #ifdef _WIN32
  624. {WSADATA d; WSAStartup(0x101,&d); }
  625. #endif
  626. event_base_free(event_base_new());
  627. ], [--with-libevent-dir], [/opt/libevent])
  628. dnl Determine the incantation needed to link libevent.
  629. save_LIBS="$LIBS"
  630. save_LDFLAGS="$LDFLAGS"
  631. save_CPPFLAGS="$CPPFLAGS"
  632. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  633. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  634. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  635. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  636. if test "$enable_static_libevent" = "yes"; then
  637. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  638. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  639. else
  640. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  641. fi
  642. else
  643. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  644. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  645. 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"))
  646. if test "$ac_cv_search_event_new" != "none required"; then
  647. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  648. fi
  649. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  650. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  651. fi
  652. else
  653. AC_MSG_ERROR("libevent2 is required but the headers could not be found")
  654. fi
  655. fi
  656. dnl Now check for particular libevent functions.
  657. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
  658. evutil_secure_rng_add_bytes \
  659. ])
  660. LIBS="$save_LIBS"
  661. LDFLAGS="$save_LDFLAGS"
  662. CPPFLAGS="$save_CPPFLAGS"
  663. dnl Check that libevent is at least at version 2.0.10, the first stable
  664. dnl release of its series
  665. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  666. AC_MSG_CHECKING([whether Libevent is new enough])
  667. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  668. #include <event2/event.h>
  669. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  670. #error
  671. int x = y(zz);
  672. #else
  673. int x = 1;
  674. #endif
  675. ])], [ AC_MSG_RESULT([yes]) ],
  676. [ AC_MSG_RESULT([no])
  677. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  678. LIBS="$save_LIBS"
  679. LDFLAGS="$save_LDFLAGS"
  680. CPPFLAGS="$save_CPPFLAGS"
  681. AC_SUBST(TOR_LIBEVENT_LIBS)
  682. dnl ------------------------------------------------------
  683. dnl Where do you live, libm?
  684. dnl On some platforms (Haiku/BeOS) the math library is
  685. dnl part of libroot. In which case don't link against lm
  686. TOR_LIB_MATH=""
  687. save_LIBS="$LIBS"
  688. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  689. if test "$ac_cv_search_pow" != "none required"; then
  690. TOR_LIB_MATH="$ac_cv_search_pow"
  691. fi
  692. LIBS="$save_LIBS"
  693. AC_SUBST(TOR_LIB_MATH)
  694. dnl ------------------------------------------------------
  695. dnl Where do you live, openssl? And how do we call you?
  696. tor_openssl_pkg_redhat="openssl"
  697. tor_openssl_pkg_debian="libssl-dev"
  698. tor_openssl_devpkg_redhat="openssl-devel"
  699. tor_openssl_devpkg_debian="libssl-dev"
  700. ALT_openssl_WITHVAL=""
  701. AC_ARG_WITH(ssl-dir,
  702. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  703. [
  704. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  705. ALT_openssl_WITHVAL="$withval"
  706. fi
  707. ])
  708. AC_MSG_NOTICE([Now, we'll look for OpenSSL >= 1.0.1])
  709. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI $TOR_LIB_WS32],
  710. [#include <openssl/ssl.h>
  711. char *getenv(const char *);],
  712. [struct ssl_cipher_st;
  713. unsigned SSL_CIPHER_get_id(const struct ssl_cipher_st *);
  714. char *getenv(const char *);],
  715. dnl This funny-looking test program calls getenv, so that the compiler
  716. dnl will neither make code that call SSL_CIPHER_get_id(NULL) [producing
  717. dnl a crash], nor optimize out the call to SSL_CIPHER_get_id().
  718. dnl We look for SSL_cipher_get_id() because it is present in
  719. dnl OpenSSL >=1.0.1, because it is not deprecated, and because Tor
  720. dnl depends on it.
  721. [if (getenv("THIS_SHOULDNT_BE_SET_X201803")) SSL_CIPHER_get_id((void *)0);], [],
  722. [/usr/local/opt/openssl /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /opt/openssl])
  723. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  724. if test "$enable_static_openssl" = "yes"; then
  725. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  726. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  727. else
  728. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  729. fi
  730. else
  731. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  732. fi
  733. AC_SUBST(TOR_OPENSSL_LIBS)
  734. dnl Now check for particular openssl functions.
  735. save_LIBS="$LIBS"
  736. save_LDFLAGS="$LDFLAGS"
  737. save_CPPFLAGS="$CPPFLAGS"
  738. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  739. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  740. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  741. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  742. #include <openssl/opensslv.h>
  743. #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
  744. #error "too old"
  745. #endif
  746. ]], [[]])],
  747. [ : ],
  748. [ 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.]) ])
  749. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  750. #include <openssl/opensslv.h>
  751. #include <openssl/evp.h>
  752. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  753. #error "no ECC"
  754. #endif
  755. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  756. #error "curves unavailable"
  757. #endif
  758. ]], [[]])],
  759. [ : ],
  760. [ 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.]) ])
  761. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  762. [#include <openssl/ssl.h>
  763. ])
  764. AC_CHECK_FUNCS([ \
  765. SSL_SESSION_get_master_key \
  766. SSL_get_server_random \
  767. SSL_get_client_ciphers \
  768. SSL_get_client_random \
  769. SSL_CIPHER_find \
  770. TLS_method
  771. ])
  772. dnl Check if OpenSSL has scrypt implementation.
  773. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  774. dnl Check if OpenSSL structures are opaque
  775. AC_CHECK_MEMBERS([SSL.state], , ,
  776. [#include <openssl/ssl.h>
  777. ])
  778. AC_CHECK_SIZEOF(SHA_CTX, , [AC_INCLUDES_DEFAULT()
  779. #include <openssl/sha.h>
  780. ])
  781. dnl Define the set of checks for KIST scheduler support.
  782. AC_DEFUN([CHECK_KIST_SUPPORT],[
  783. dnl KIST needs struct tcp_info and for certain members to exist.
  784. AC_CHECK_MEMBERS(
  785. [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss],
  786. , ,[[#include <netinet/tcp.h>]])
  787. dnl KIST needs SIOCOUTQNSD to exist for an ioctl call.
  788. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  789. #include <linux/sockios.h>
  790. #ifndef SIOCOUTQNSD
  791. #error
  792. #endif
  793. ])], have_siocoutqnsd=yes, have_siocoutqnsd=no)
  794. if test "x$have_siocoutqnsd" = "xyes"; then
  795. if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then
  796. if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then
  797. have_kist_support=yes
  798. fi
  799. fi
  800. fi
  801. ])
  802. dnl Now, trigger the check.
  803. CHECK_KIST_SUPPORT
  804. AS_IF([test "x$have_kist_support" = "xyes"],
  805. [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported
  806. on this system])],
  807. [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])])
  808. LIBS="$save_LIBS"
  809. LDFLAGS="$save_LDFLAGS"
  810. CPPFLAGS="$save_CPPFLAGS"
  811. dnl ------------------------------------------------------
  812. dnl Where do you live, zlib? And how do we call you?
  813. tor_zlib_pkg_redhat="zlib"
  814. tor_zlib_pkg_debian="zlib1g"
  815. tor_zlib_devpkg_redhat="zlib-devel"
  816. tor_zlib_devpkg_debian="zlib1g-dev"
  817. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  818. [#include <zlib.h>],
  819. [const char * zlibVersion(void);],
  820. [zlibVersion();], [--with-zlib-dir],
  821. [/opt/zlib])
  822. if test "$enable_static_zlib" = "yes"; then
  823. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  824. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  825. using --enable-static-zlib")
  826. else
  827. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  828. fi
  829. else
  830. TOR_ZLIB_LIBS="-lz"
  831. fi
  832. AC_SUBST(TOR_ZLIB_LIBS)
  833. dnl ------------------------------------------------------
  834. dnl Where we do we find lzma?
  835. AC_ARG_ENABLE(lzma,
  836. AS_HELP_STRING(--enable-lzma, [enable support for the LZMA compression scheme.]),
  837. [case "${enableval}" in
  838. "yes") lzma=true ;;
  839. "no") lzma=false ;;
  840. * ) AC_MSG_ERROR(bad value for --enable-lzma) ;;
  841. esac], [lzma=auto])
  842. if test "x$enable_lzma" = "xno"; then
  843. have_lzma=no;
  844. else
  845. PKG_CHECK_MODULES([LZMA],
  846. [liblzma],
  847. have_lzma=yes,
  848. have_lzma=no)
  849. if test "x$have_lzma" = "xno" ; then
  850. AC_MSG_WARN([Unable to find liblzma.])
  851. fi
  852. fi
  853. if test "x$have_lzma" = "xyes"; then
  854. AC_DEFINE(HAVE_LZMA,1,[Have LZMA])
  855. TOR_LZMA_CFLAGS="${LZMA_CFLAGS}"
  856. TOR_LZMA_LIBS="${LZMA_LIBS}"
  857. fi
  858. AC_SUBST(TOR_LZMA_CFLAGS)
  859. AC_SUBST(TOR_LZMA_LIBS)
  860. dnl ------------------------------------------------------
  861. dnl Where we do we find zstd?
  862. AC_ARG_ENABLE(zstd,
  863. AS_HELP_STRING(--enable-zstd, [enable support for the Zstandard compression scheme.]),
  864. [case "${enableval}" in
  865. "yes") zstd=true ;;
  866. "no") zstd=false ;;
  867. * ) AC_MSG_ERROR(bad value for --enable-zstd) ;;
  868. esac], [zstd=auto])
  869. if test "x$enable_zstd" = "xno"; then
  870. have_zstd=no;
  871. else
  872. PKG_CHECK_MODULES([ZSTD],
  873. [libzstd >= 1.1],
  874. have_zstd=yes,
  875. have_zstd=no)
  876. if test "x$have_zstd" = "xno" ; then
  877. AC_MSG_WARN([Unable to find libzstd.])
  878. fi
  879. fi
  880. if test "x$have_zstd" = "xyes"; then
  881. AC_DEFINE(HAVE_ZSTD,1,[Have Zstd])
  882. TOR_ZSTD_CFLAGS="${ZSTD_CFLAGS}"
  883. TOR_ZSTD_LIBS="${ZSTD_LIBS}"
  884. dnl now check for zstd functions
  885. save_LIBS="$LIBS"
  886. save_CFLAGS="$CFLAGS"
  887. LIBS="$LIBS $ZSTD_LIBS"
  888. CFLAGS="$CFLAGS $ZSTD_CFLAGS"
  889. AC_CHECK_FUNCS(ZSTD_estimateCStreamSize \
  890. ZSTD_estimateDCtxSize)
  891. LIBS="$save_LIBS"
  892. CFLAGS="$save_CFLAGS"
  893. fi
  894. AC_SUBST(TOR_ZSTD_CFLAGS)
  895. AC_SUBST(TOR_ZSTD_LIBS)
  896. dnl ----------------------------------------------------------------------
  897. dnl Check if libcap is available for capabilities.
  898. tor_cap_pkg_debian="libcap2"
  899. tor_cap_pkg_redhat="libcap"
  900. tor_cap_devpkg_debian="libcap-dev"
  901. tor_cap_devpkg_redhat="libcap-devel"
  902. AC_CHECK_LIB([cap], [cap_init], [],
  903. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  904. )
  905. AC_CHECK_FUNCS(cap_set_proc)
  906. dnl ---------------------------------------------------------------------
  907. dnl Now that we know about our major libraries, we can check for compiler
  908. dnl and linker hardening options. We need to do this with the libraries known,
  909. dnl since sometimes the linker will like an option but not be willing to
  910. dnl use it with a build of a library.
  911. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  912. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_LIB_USERENV $TOR_CAP_LIBS"
  913. CFLAGS_FTRAPV=
  914. CFLAGS_FWRAPV=
  915. CFLAGS_ASAN=
  916. CFLAGS_UBSAN=
  917. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  918. #if !defined(__clang__)
  919. #error
  920. #endif])], have_clang=yes, have_clang=no)
  921. if test "x$enable_gcc_hardening" != "xno"; then
  922. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  923. if test "x$have_clang" = "xyes"; then
  924. TOR_CHECK_CFLAGS(-Qunused-arguments)
  925. fi
  926. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  927. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  928. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  929. m4_ifdef([AS_VAR_IF],[
  930. AS_VAR_IF(can_compile, [yes],
  931. AS_VAR_IF(can_link, [yes],
  932. [],
  933. 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.)]))
  934. )])
  935. AS_VAR_POPDEF([can_link])
  936. AS_VAR_POPDEF([can_compile])
  937. TOR_CHECK_CFLAGS(-Wstack-protector)
  938. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  939. if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
  940. TOR_CHECK_CFLAGS(-fPIE)
  941. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  942. fi
  943. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  944. fi
  945. if test "$fragile_hardening" = "yes"; then
  946. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  947. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  948. 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.])
  949. fi
  950. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  951. AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
  952. fi
  953. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  954. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  955. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.*, and with Clang you need libclang_rt.ubsan*])
  956. fi
  957. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  958. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  959. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
  960. fi
  961. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  962. fi
  963. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  964. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  965. mulodi_fixes_ftrapv=no
  966. if test "$have_clang" = "yes"; then
  967. saved_CFLAGS="$CFLAGS"
  968. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  969. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  970. AC_LINK_IFELSE([
  971. AC_LANG_SOURCE([[
  972. #include <stdint.h>
  973. #include <stdlib.h>
  974. int main(int argc, char **argv)
  975. {
  976. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  977. * (int64_t)atoi(argv[3]);
  978. return x == 9;
  979. } ]])],
  980. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  981. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  982. if test "$ftrapv_can_link" = "no"; then
  983. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  984. AC_LINK_IFELSE([
  985. AC_LANG_SOURCE([[
  986. #include <stdint.h>
  987. #include <stdlib.h>
  988. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  989. *overflow=0;
  990. return a;
  991. }
  992. int main(int argc, char **argv)
  993. {
  994. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  995. * (int64_t)atoi(argv[3]);
  996. return x == 9;
  997. } ]])],
  998. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  999. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  1000. fi
  1001. CFLAGS="$saved_CFLAGS"
  1002. fi
  1003. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  1004. dnl These cflags add bunches of branches, and we haven't been able to
  1005. dnl persuade ourselves that they're suitable for code that needs to be
  1006. dnl constant time.
  1007. AC_SUBST(CFLAGS_BUGTRAP)
  1008. dnl These cflags are variant ones sutable for code that needs to be
  1009. dnl constant-time.
  1010. AC_SUBST(CFLAGS_CONSTTIME)
  1011. if test "x$enable_linker_hardening" != "xno"; then
  1012. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  1013. fi
  1014. # For backtrace support
  1015. TOR_CHECK_LDFLAGS(-rdynamic)
  1016. dnl ------------------------------------------------------
  1017. dnl Now see if we have a -fomit-frame-pointer compiler option.
  1018. saved_CFLAGS="$CFLAGS"
  1019. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  1020. F_OMIT_FRAME_POINTER=''
  1021. if test "$saved_CFLAGS" != "$CFLAGS"; then
  1022. if test "$fragile_hardening" = "yes"; then
  1023. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  1024. fi
  1025. fi
  1026. CFLAGS="$saved_CFLAGS"
  1027. AC_SUBST(F_OMIT_FRAME_POINTER)
  1028. dnl ------------------------------------------------------
  1029. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  1030. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  1031. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  1032. dnl code will work.
  1033. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  1034. dnl ============================================================
  1035. dnl Check for libseccomp
  1036. if test "x$enable_seccomp" != "xno"; then
  1037. AC_CHECK_HEADERS([seccomp.h])
  1038. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  1039. fi
  1040. dnl ============================================================
  1041. dnl Check for libscrypt
  1042. if test "x$enable_libscrypt" != "xno"; then
  1043. AC_CHECK_HEADERS([libscrypt.h])
  1044. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  1045. AC_CHECK_FUNCS([libscrypt_scrypt])
  1046. fi
  1047. dnl ============================================================
  1048. dnl We need an implementation of curve25519.
  1049. dnl set these defaults.
  1050. build_curve25519_donna=no
  1051. build_curve25519_donna_c64=no
  1052. use_curve25519_donna=no
  1053. use_curve25519_nacl=no
  1054. CURVE25519_LIBS=
  1055. dnl The best choice is using curve25519-donna-c64, but that requires
  1056. dnl that we
  1057. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  1058. tor_cv_can_use_curve25519_donna_c64,
  1059. [AC_RUN_IFELSE(
  1060. [AC_LANG_PROGRAM([dnl
  1061. #include <stdint.h>
  1062. typedef unsigned uint128_t __attribute__((mode(TI)));
  1063. int func(uint64_t a, uint64_t b) {
  1064. uint128_t c = ((uint128_t)a) * b;
  1065. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1066. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1067. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1068. (((uint64_t)(c))&0xffffffffL) == 0;
  1069. return ok;
  1070. }
  1071. ], [dnl
  1072. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1073. ((uint64_t)1234567890) << 24);
  1074. return !ok;
  1075. ])],
  1076. [tor_cv_can_use_curve25519_donna_c64=yes],
  1077. [tor_cv_can_use_curve25519_donna_c64=no],
  1078. [AC_LINK_IFELSE(
  1079. [AC_LANG_PROGRAM([dnl
  1080. #include <stdint.h>
  1081. typedef unsigned uint128_t __attribute__((mode(TI)));
  1082. int func(uint64_t a, uint64_t b) {
  1083. uint128_t c = ((uint128_t)a) * b;
  1084. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1085. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1086. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1087. (((uint64_t)(c))&0xffffffffL) == 0;
  1088. return ok;
  1089. }
  1090. ], [dnl
  1091. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1092. ((uint64_t)1234567890) << 24);
  1093. return !ok;
  1094. ])],
  1095. [tor_cv_can_use_curve25519_donna_c64=cross],
  1096. [tor_cv_can_use_curve25519_donna_c64=no])])])
  1097. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  1098. nacl/crypto_scalarmult_curve25519.h])
  1099. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  1100. tor_cv_can_use_curve25519_nacl,
  1101. [tor_saved_LIBS="$LIBS"
  1102. LIBS="$LIBS -lnacl"
  1103. AC_LINK_IFELSE(
  1104. [AC_LANG_PROGRAM([dnl
  1105. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  1106. #include <crypto_scalarmult_curve25519.h>
  1107. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  1108. #include <nacl/crypto_scalarmult_curve25519.h>
  1109. #endif
  1110. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  1111. #error Hey, this is the reference implementation! That's not fast.
  1112. #endif
  1113. ], [
  1114. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  1115. ])], [tor_cv_can_use_curve25519_nacl=yes],
  1116. [tor_cv_can_use_curve25519_nacl=no])
  1117. LIBS="$tor_saved_LIBS" ])
  1118. dnl Okay, now we need to figure out which one to actually use. Fall back
  1119. dnl to curve25519-donna.c
  1120. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  1121. build_curve25519_donna_c64=yes
  1122. use_curve25519_donna=yes
  1123. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  1124. use_curve25519_nacl=yes
  1125. CURVE25519_LIBS=-lnacl
  1126. else
  1127. build_curve25519_donna=yes
  1128. use_curve25519_donna=yes
  1129. fi
  1130. if test "x$use_curve25519_donna" = "xyes"; then
  1131. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  1132. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  1133. fi
  1134. if test "x$use_curve25519_nacl" = "xyes"; then
  1135. AC_DEFINE(USE_CURVE25519_NACL, 1,
  1136. [Defined if we should use a curve25519 from nacl])
  1137. fi
  1138. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  1139. test "x$build_curve25519_donna" = "xyes")
  1140. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  1141. test "x$build_curve25519_donna_c64" = "xyes")
  1142. AC_SUBST(CURVE25519_LIBS)
  1143. dnl Make sure to enable support for large off_t if available.
  1144. AC_SYS_LARGEFILE
  1145. AC_CHECK_HEADERS([assert.h \
  1146. errno.h \
  1147. fcntl.h \
  1148. signal.h \
  1149. string.h \
  1150. sys/capability.h \
  1151. sys/fcntl.h \
  1152. sys/stat.h \
  1153. sys/time.h \
  1154. sys/types.h \
  1155. time.h \
  1156. unistd.h \
  1157. arpa/inet.h \
  1158. crt_externs.h \
  1159. execinfo.h \
  1160. gnu/libc-version.h \
  1161. grp.h \
  1162. ifaddrs.h \
  1163. inttypes.h \
  1164. limits.h \
  1165. linux/types.h \
  1166. machine/limits.h \
  1167. malloc.h \
  1168. malloc/malloc.h \
  1169. malloc_np.h \
  1170. netdb.h \
  1171. netinet/in.h \
  1172. netinet/in6.h \
  1173. pwd.h \
  1174. readpassphrase.h \
  1175. stdint.h \
  1176. stdatomic.h \
  1177. sys/eventfd.h \
  1178. sys/file.h \
  1179. sys/ioctl.h \
  1180. sys/limits.h \
  1181. sys/mman.h \
  1182. sys/param.h \
  1183. sys/prctl.h \
  1184. sys/random.h \
  1185. sys/resource.h \
  1186. sys/select.h \
  1187. sys/socket.h \
  1188. sys/statvfs.h \
  1189. sys/syscall.h \
  1190. sys/sysctl.h \
  1191. sys/syslimits.h \
  1192. sys/time.h \
  1193. sys/types.h \
  1194. sys/un.h \
  1195. sys/utime.h \
  1196. sys/wait.h \
  1197. syslog.h \
  1198. utime.h])
  1199. AC_CHECK_HEADERS(sys/param.h)
  1200. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  1201. [#ifdef HAVE_SYS_TYPES_H
  1202. #include <sys/types.h>
  1203. #endif
  1204. #ifdef HAVE_SYS_SOCKET_H
  1205. #include <sys/socket.h>
  1206. #endif])
  1207. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_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. #ifdef HAVE_NET_IF_H
  1215. #include <net/if.h>
  1216. #endif
  1217. #ifdef HAVE_NETINET_IN_H
  1218. #include <netinet/in.h>
  1219. #endif])
  1220. AC_CHECK_HEADERS(linux/if.h,[],[],
  1221. [
  1222. #ifdef HAVE_SYS_SOCKET_H
  1223. #include <sys/socket.h>
  1224. #endif
  1225. ])
  1226. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  1227. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  1228. [#ifdef HAVE_SYS_TYPES_H
  1229. #include <sys/types.h>
  1230. #endif
  1231. #ifdef HAVE_SYS_SOCKET_H
  1232. #include <sys/socket.h>
  1233. #endif
  1234. #ifdef HAVE_LIMITS_H
  1235. #include <limits.h>
  1236. #endif
  1237. #ifdef HAVE_LINUX_TYPES_H
  1238. #include <linux/types.h>
  1239. #endif
  1240. #ifdef HAVE_NETINET_IN6_H
  1241. #include <netinet/in6.h>
  1242. #endif
  1243. #ifdef HAVE_NETINET_IN_H
  1244. #include <netinet/in.h>
  1245. #endif])
  1246. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  1247. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  1248. [#ifdef HAVE_SYS_TYPES_H
  1249. #include <sys/types.h>
  1250. #endif
  1251. #ifdef HAVE_SYS_SOCKET_H
  1252. #include <sys/socket.h>
  1253. #endif
  1254. #ifdef HAVE_LIMITS_H
  1255. #include <limits.h>
  1256. #endif
  1257. #ifdef HAVE_LINUX_TYPES_H
  1258. #include <linux/types.h>
  1259. #endif
  1260. #ifdef HAVE_NETINET_IN6_H
  1261. #include <netinet/in6.h>
  1262. #endif
  1263. #ifdef HAVE_NETINET_IN_H
  1264. #include <netinet/in.h>
  1265. #endif
  1266. #ifdef HAVE_LINUX_IF_H
  1267. #include <linux/if.h>
  1268. #endif])
  1269. transparent_ok=0
  1270. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  1271. transparent_ok=1
  1272. fi
  1273. if test "x$linux_netfilter_ipv4" = "x1"; then
  1274. transparent_ok=1
  1275. fi
  1276. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  1277. transparent_ok=1
  1278. fi
  1279. if test "x$transparent_ok" = "x1"; then
  1280. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  1281. else
  1282. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  1283. fi
  1284. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1285. [#ifdef HAVE_SYS_TYPES_H
  1286. #include <sys/types.h>
  1287. #endif
  1288. #ifdef HAVE_SYS_TIME_H
  1289. #include <sys/time.h>
  1290. #endif])
  1291. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  1292. dnl Watch out.
  1293. AC_CHECK_SIZEOF(int8_t)
  1294. AC_CHECK_SIZEOF(int16_t)
  1295. AC_CHECK_SIZEOF(int32_t)
  1296. AC_CHECK_SIZEOF(int64_t)
  1297. AC_CHECK_SIZEOF(uint8_t)
  1298. AC_CHECK_SIZEOF(uint16_t)
  1299. AC_CHECK_SIZEOF(uint32_t)
  1300. AC_CHECK_SIZEOF(uint64_t)
  1301. AC_CHECK_SIZEOF(intptr_t)
  1302. AC_CHECK_SIZEOF(uintptr_t)
  1303. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  1304. AC_CHECK_SIZEOF(char)
  1305. AC_CHECK_SIZEOF(short)
  1306. AC_CHECK_SIZEOF(int)
  1307. AC_CHECK_SIZEOF(long)
  1308. AC_CHECK_SIZEOF(long long)
  1309. AC_CHECK_SIZEOF(__int64)
  1310. AC_CHECK_SIZEOF(void *)
  1311. AC_CHECK_SIZEOF(time_t)
  1312. AC_CHECK_SIZEOF(size_t)
  1313. AC_CHECK_SIZEOF(pid_t)
  1314. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1315. AC_PC_FROM_UCONTEXT([:])
  1316. dnl used to include sockaddr_storage, but everybody has that.
  1317. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1318. [#ifdef HAVE_SYS_TYPES_H
  1319. #include <sys/types.h>
  1320. #endif
  1321. #ifdef HAVE_NETINET_IN_H
  1322. #include <netinet/in.h>
  1323. #endif
  1324. #ifdef HAVE_NETINET_IN6_H
  1325. #include <netinet/in6.h>
  1326. #endif
  1327. #ifdef HAVE_SYS_SOCKET_H
  1328. #include <sys/socket.h>
  1329. #endif
  1330. #ifdef _WIN32
  1331. #define _WIN32_WINNT 0x0501
  1332. #define WIN32_LEAN_AND_MEAN
  1333. #include <winsock2.h>
  1334. #include <ws2tcpip.h>
  1335. #endif
  1336. ])
  1337. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1338. [#ifdef HAVE_SYS_TYPES_H
  1339. #include <sys/types.h>
  1340. #endif
  1341. #ifdef HAVE_NETINET_IN_H
  1342. #include <netinet/in.h>
  1343. #endif
  1344. #ifdef HAVE_NETINET_IN6_H
  1345. #include <netinet/in6.h>
  1346. #endif
  1347. #ifdef HAVE_SYS_SOCKET_H
  1348. #include <sys/socket.h>
  1349. #endif
  1350. #ifdef _WIN32
  1351. #define _WIN32_WINNT 0x0501
  1352. #define WIN32_LEAN_AND_MEAN
  1353. #include <winsock2.h>
  1354. #include <ws2tcpip.h>
  1355. #endif
  1356. ])
  1357. AC_CHECK_TYPES([rlim_t], , ,
  1358. [#ifdef HAVE_SYS_TYPES_H
  1359. #include <sys/types.h>
  1360. #endif
  1361. #ifdef HAVE_SYS_TIME_H
  1362. #include <sys/time.h>
  1363. #endif
  1364. #ifdef HAVE_SYS_RESOURCE_H
  1365. #include <sys/resource.h>
  1366. #endif
  1367. ])
  1368. AX_CHECK_SIGN([time_t],
  1369. [ : ],
  1370. [ : ], [
  1371. #ifdef HAVE_SYS_TYPES_H
  1372. #include <sys/types.h>
  1373. #endif
  1374. #ifdef HAVE_SYS_TIME_H
  1375. #include <sys/time.h>
  1376. #endif
  1377. #ifdef HAVE_TIME_H
  1378. #include <time.h>
  1379. #endif
  1380. ])
  1381. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1382. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1383. fi
  1384. AX_CHECK_SIGN([size_t],
  1385. [ tor_cv_size_t_signed=yes ],
  1386. [ tor_cv_size_t_signed=no ], [
  1387. #ifdef HAVE_SYS_TYPES_H
  1388. #include <sys/types.h>
  1389. #endif
  1390. ])
  1391. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1392. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1393. fi
  1394. AX_CHECK_SIGN([enum always],
  1395. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1396. [ : ], [
  1397. enum always { AAA, BBB, CCC };
  1398. ])
  1399. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1400. #ifdef HAVE_SYS_SOCKET_H
  1401. #include <sys/socket.h>
  1402. #endif
  1403. ])
  1404. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1405. AC_CHECK_SIZEOF(cell_t)
  1406. # Now make sure that NULL can be represented as zero bytes.
  1407. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1408. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1409. [[#include <stdlib.h>
  1410. #include <string.h>
  1411. #include <stdio.h>
  1412. #ifdef HAVE_STDDEF_H
  1413. #include <stddef.h>
  1414. #endif
  1415. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1416. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1417. [tor_cv_null_is_zero=yes],
  1418. [tor_cv_null_is_zero=no],
  1419. [tor_cv_null_is_zero=cross])])
  1420. if test "$tor_cv_null_is_zero" = "cross"; then
  1421. # Cross-compiling; let's hope that the target isn't raving mad.
  1422. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1423. fi
  1424. if test "$tor_cv_null_is_zero" != "no"; then
  1425. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1426. [Define to 1 iff memset(0) sets pointers to NULL])
  1427. fi
  1428. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1429. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1430. [[#include <stdlib.h>
  1431. #include <string.h>
  1432. #include <stdio.h>
  1433. #ifdef HAVE_STDDEF_H
  1434. #include <stddef.h>
  1435. #endif
  1436. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1437. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1438. [tor_cv_dbl0_is_zero=yes],
  1439. [tor_cv_dbl0_is_zero=no],
  1440. [tor_cv_dbl0_is_zero=cross])])
  1441. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1442. # Cross-compiling; let's hope that the target isn't raving mad.
  1443. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1444. fi
  1445. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1446. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1447. [Define to 1 iff memset(0) sets doubles to 0.0])
  1448. fi
  1449. # And what happens when we malloc zero?
  1450. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1451. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1452. [[#include <stdlib.h>
  1453. #include <string.h>
  1454. #include <stdio.h>
  1455. #ifdef HAVE_STDDEF_H
  1456. #include <stddef.h>
  1457. #endif
  1458. int main () { return malloc(0)?0:1; }]])],
  1459. [tor_cv_malloc_zero_works=yes],
  1460. [tor_cv_malloc_zero_works=no],
  1461. [tor_cv_malloc_zero_works=cross])])
  1462. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1463. # Cross-compiling; let's hope that the target isn't raving mad.
  1464. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1465. fi
  1466. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1467. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1468. [Define to 1 iff malloc(0) returns a pointer])
  1469. fi
  1470. # whether we seem to be in a 2s-complement world.
  1471. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1472. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1473. [[int main () { int problem = ((-99) != (~99)+1);
  1474. return problem ? 1 : 0; }]])],
  1475. [tor_cv_twos_complement=yes],
  1476. [tor_cv_twos_complement=no],
  1477. [tor_cv_twos_complement=cross])])
  1478. if test "$tor_cv_twos_complement" = "cross"; then
  1479. # Cross-compiling; let's hope that the target isn't raving mad.
  1480. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1481. fi
  1482. if test "$tor_cv_twos_complement" != "no"; then
  1483. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1484. [Define to 1 iff we represent negative integers with
  1485. two's complement])
  1486. fi
  1487. # What does shifting a negative value do?
  1488. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1489. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1490. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1491. [tor_cv_sign_extend=yes],
  1492. [tor_cv_sign_extend=no],
  1493. [tor_cv_sign_extend=cross])])
  1494. if test "$tor_cv_sign_extend" = "cross"; then
  1495. # Cross-compiling; let's hope that the target isn't raving mad.
  1496. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1497. fi
  1498. if test "$tor_cv_sign_extend" != "no"; then
  1499. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1500. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1501. fi
  1502. # Is uint8_t the same type as unsigned char?
  1503. AC_CACHE_CHECK([whether uint8_t is the same type as unsigned char], tor_cv_uint8_uchar,
  1504. [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1505. #include <stdint.h>
  1506. extern uint8_t c;
  1507. unsigned char c;]])],
  1508. [tor_cv_uint8_uchar=yes],
  1509. [tor_cv_uint8_uchar=no],
  1510. [tor_cv_uint8_uchar=cross])])
  1511. if test "$tor_cv_uint8_uchar" = "cross"; then
  1512. AC_MSG_NOTICE([Cross-compiling: we'll assume that uint8_t is the same type as unsigned char])
  1513. fi
  1514. if test "$tor_cv_uint8_uchar" = "no"; then
  1515. AC_MSG_ERROR([We assume that uint8_t is the same type as unsigned char, but your compiler disagrees.])
  1516. fi
  1517. # Whether we should use the dmalloc memory allocation debugging library.
  1518. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1519. AC_ARG_WITH(dmalloc,
  1520. AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
  1521. [if [[ "$withval" = "yes" ]]; then
  1522. dmalloc=1
  1523. AC_MSG_RESULT(yes)
  1524. else
  1525. dmalloc=1
  1526. AC_MSG_RESULT(no)
  1527. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1528. )
  1529. if [[ $dmalloc -eq 1 ]]; then
  1530. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1531. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1532. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1533. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1534. fi
  1535. AC_ARG_WITH(tcmalloc,
  1536. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
  1537. [ tcmalloc=yes ], [ tcmalloc=no ])
  1538. if test "x$tcmalloc" = "xyes"; then
  1539. LDFLAGS="-ltcmalloc $LDFLAGS"
  1540. fi
  1541. using_custom_malloc=no
  1542. if test "x$enable_openbsd_malloc" = "xyes"; then
  1543. using_custom_malloc=yes
  1544. fi
  1545. if test "x$tcmalloc" = "xyes"; then
  1546. using_custom_malloc=yes
  1547. fi
  1548. if test "$using_custom_malloc" = "no"; then
  1549. AC_CHECK_FUNCS(mallinfo)
  1550. fi
  1551. # By default, we're going to assume we don't have mlockall()
  1552. # bionic and other platforms have various broken mlockall subsystems.
  1553. # Some systems don't have a working mlockall, some aren't linkable,
  1554. # and some have it but don't declare it.
  1555. AC_CHECK_FUNCS(mlockall)
  1556. AC_CHECK_DECLS([mlockall], , , [
  1557. #ifdef HAVE_SYS_MMAN_H
  1558. #include <sys/mman.h>
  1559. #endif])
  1560. # Allow user to specify an alternate syslog facility
  1561. AC_ARG_WITH(syslog-facility,
  1562. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1563. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1564. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1565. AC_SUBST(LOGFACILITY)
  1566. # Check if we have getresuid and getresgid
  1567. AC_CHECK_FUNCS(getresuid getresgid)
  1568. # Check for gethostbyname_r in all its glorious incompatible versions.
  1569. # (This logic is based on that in Python's configure.in)
  1570. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1571. [Define this if you have any gethostbyname_r()])
  1572. AC_CHECK_FUNC(gethostbyname_r, [
  1573. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1574. OLD_CFLAGS=$CFLAGS
  1575. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1576. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1577. #include <netdb.h>
  1578. ]], [[
  1579. char *cp1, *cp2;
  1580. struct hostent *h1, *h2;
  1581. int i1, i2;
  1582. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1583. ]])],[
  1584. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1585. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1586. [Define this if gethostbyname_r takes 6 arguments])
  1587. AC_MSG_RESULT(6)
  1588. ], [
  1589. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1590. #include <netdb.h>
  1591. ]], [[
  1592. char *cp1, *cp2;
  1593. struct hostent *h1;
  1594. int i1, i2;
  1595. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1596. ]])], [
  1597. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1598. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1599. [Define this if gethostbyname_r takes 5 arguments])
  1600. AC_MSG_RESULT(5)
  1601. ], [
  1602. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1603. #include <netdb.h>
  1604. ]], [[
  1605. char *cp1;
  1606. struct hostent *h1;
  1607. struct hostent_data hd;
  1608. (void) gethostbyname_r(cp1,h1,&hd);
  1609. ]])], [
  1610. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1611. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1612. [Define this if gethostbyname_r takes 3 arguments])
  1613. AC_MSG_RESULT(3)
  1614. ], [
  1615. AC_MSG_RESULT(0)
  1616. ])
  1617. ])
  1618. ])
  1619. CFLAGS=$OLD_CFLAGS
  1620. ])
  1621. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1622. tor_cv_have_func_macro,
  1623. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1624. #include <stdio.h>
  1625. int main(int c, char **v) { puts(__func__); }])],
  1626. tor_cv_have_func_macro=yes,
  1627. tor_cv_have_func_macro=no))
  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 __FUNCTION__],
  1636. tor_cv_have_FUNCTION_macro,
  1637. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1638. #include <stdio.h>
  1639. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1640. tor_cv_have_FUNCTION_macro=yes,
  1641. tor_cv_have_FUNCTION_macro=no))
  1642. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1643. tor_cv_have_environ_declared,
  1644. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1645. #ifdef HAVE_UNISTD_H
  1646. #include <unistd.h>
  1647. #endif
  1648. #include <stdlib.h>
  1649. int main(int c, char **v) { char **t = environ; }])],
  1650. tor_cv_have_environ_declared=yes,
  1651. tor_cv_have_environ_declared=no))
  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_FUNC_macro" = "yes"; then
  1656. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1657. fi
  1658. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1659. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1660. [Defined if the compiler supports __FUNCTION__])
  1661. fi
  1662. if test "$tor_cv_have_environ_declared" = "yes"; then
  1663. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1664. [Defined if we have extern char **environ already declared])
  1665. fi
  1666. # $prefix stores the value of the --prefix command line option, or
  1667. # NONE if the option wasn't set. In the case that it wasn't set, make
  1668. # it be the default, so that we can use it to expand directories now.
  1669. if test "x$prefix" = "xNONE"; then
  1670. prefix=$ac_default_prefix
  1671. fi
  1672. # and similarly for $exec_prefix
  1673. if test "x$exec_prefix" = "xNONE"; then
  1674. exec_prefix=$prefix
  1675. fi
  1676. if test "x$BUILDDIR" = "x"; then
  1677. BUILDDIR=`pwd`
  1678. fi
  1679. AC_SUBST(BUILDDIR)
  1680. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1681. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1682. if test "x$SRCDIR" = "x"; then
  1683. SRCDIR=$(cd "$srcdir"; pwd)
  1684. fi
  1685. AH_TEMPLATE([SRCDIR],[tor's sourcedir directory])
  1686. AC_DEFINE_UNQUOTED(SRCDIR,"$SRCDIR")
  1687. if test "x$CONFDIR" = "x"; then
  1688. CONFDIR=`eval echo $sysconfdir/tor`
  1689. fi
  1690. AC_SUBST(CONFDIR)
  1691. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1692. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1693. BINDIR=`eval echo $bindir`
  1694. AC_SUBST(BINDIR)
  1695. LOCALSTATEDIR=`eval echo $localstatedir`
  1696. AC_SUBST(LOCALSTATEDIR)
  1697. if test "$bwin32" = "true"; then
  1698. # Test if the linker supports the --nxcompat and --dynamicbase options
  1699. # for Windows
  1700. save_LDFLAGS="$LDFLAGS"
  1701. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1702. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1703. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1704. [AC_MSG_RESULT([yes])]
  1705. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1706. [AC_MSG_RESULT([no])]
  1707. )
  1708. LDFLAGS="$save_LDFLAGS"
  1709. fi
  1710. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1711. # than autoconf's macros like.
  1712. if test "$GCC" = "yes"; then
  1713. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1714. # accident waiting to happen.
  1715. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1716. else
  1717. # Override optimization level for non-gcc compilers
  1718. CFLAGS="$CFLAGS -O"
  1719. enable_gcc_warnings=no
  1720. enable_gcc_warnings_advisory=no
  1721. fi
  1722. # Warnings implies advisory-warnings and -Werror.
  1723. if test "$enable_gcc_warnings" = "yes"; then
  1724. enable_gcc_warnings_advisory=yes
  1725. enable_fatal_warnings=yes
  1726. fi
  1727. # OS X Lion started deprecating the system openssl. Let's just disable
  1728. # all deprecation warnings on OS X. Also, to potentially make the binary
  1729. # a little smaller, let's enable dead_strip.
  1730. case "$host_os" in
  1731. darwin*)
  1732. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1733. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1734. esac
  1735. # Add some more warnings which we use in development but not in the
  1736. # released versions. (Some relevant gcc versions can't handle these.)
  1737. #
  1738. # Note that we have to do this near the end of the autoconf process, or
  1739. # else we may run into problems when these warnings hit on the testing C
  1740. # programs that autoconf wants to build.
  1741. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1742. case "$host" in
  1743. *-*-openbsd* | *-*-bitrig*)
  1744. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1745. # That's fine, except that the headers don't pass -Wredundant-decls.
  1746. # Therefore, let's disable -Wsystem-headers when we're building
  1747. # with maximal warnings on OpenBSD.
  1748. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1749. esac
  1750. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1751. # have it work better.
  1752. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1753. # This warning was added in gcc 4.3, but it appears to generate
  1754. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1755. #CFLAGS="$CFLAGS -Wlogical-op"
  1756. m4_foreach_w([warning_flag], [
  1757. -Waddress
  1758. -Waddress-of-array-temporary
  1759. -Waddress-of-temporary
  1760. -Wambiguous-macro
  1761. -Wanonymous-pack-parens
  1762. -Warc
  1763. -Warc-abi
  1764. -Warc-bridge-casts-disallowed-in-nonarc
  1765. -Warc-maybe-repeated-use-of-weak
  1766. -Warc-performSelector-leaks
  1767. -Warc-repeated-use-of-weak
  1768. -Warray-bounds
  1769. -Warray-bounds-pointer-arithmetic
  1770. -Wasm
  1771. -Wasm-operand-widths
  1772. -Watomic-properties
  1773. -Watomic-property-with-user-defined-accessor
  1774. -Wauto-import
  1775. -Wauto-storage-class
  1776. -Wauto-var-id
  1777. -Wavailability
  1778. -Wbackslash-newline-escape
  1779. -Wbad-array-new-length
  1780. -Wbind-to-temporary-copy
  1781. -Wbitfield-constant-conversion
  1782. -Wbool-conversion
  1783. -Wbool-conversions
  1784. -Wbuiltin-requires-header
  1785. -Wchar-align
  1786. -Wcompare-distinct-pointer-types
  1787. -Wcomplex-component-init
  1788. -Wconditional-type-mismatch
  1789. -Wconfig-macros
  1790. -Wconstant-conversion
  1791. -Wconstant-logical-operand
  1792. -Wconstexpr-not-const
  1793. -Wcustom-atomic-properties
  1794. -Wdangling-field
  1795. -Wdangling-initializer-list
  1796. -Wdate-time
  1797. -Wdelegating-ctor-cycles
  1798. -Wdeprecated-implementations
  1799. -Wdeprecated-register
  1800. -Wdirect-ivar-access
  1801. -Wdiscard-qual
  1802. -Wdistributed-object-modifiers
  1803. -Wdivision-by-zero
  1804. -Wdollar-in-identifier-extension
  1805. -Wdouble-promotion
  1806. -Wduplicate-decl-specifier
  1807. -Wduplicate-enum
  1808. -Wduplicate-method-arg
  1809. -Wduplicate-method-match
  1810. -Wduplicated-cond
  1811. -Wdynamic-class-memaccess
  1812. -Wembedded-directive
  1813. -Wempty-translation-unit
  1814. -Wenum-conversion
  1815. -Wexit-time-destructors
  1816. -Wexplicit-ownership-type
  1817. -Wextern-initializer
  1818. -Wextra
  1819. -Wextra-semi
  1820. -Wextra-tokens
  1821. -Wflexible-array-extensions
  1822. -Wfloat-conversion
  1823. -Wformat-non-iso
  1824. -Wfour-char-constants
  1825. -Wgcc-compat
  1826. -Wglobal-constructors
  1827. -Wgnu-array-member-paren-init
  1828. -Wgnu-designator
  1829. -Wgnu-static-float-init
  1830. -Wheader-guard
  1831. -Wheader-hygiene
  1832. -Widiomatic-parentheses
  1833. -Wignored-attributes
  1834. -Wimplicit-atomic-properties
  1835. -Wimplicit-conversion-floating-point-to-bool
  1836. -Wimplicit-exception-spec-mismatch
  1837. -Wimplicit-fallthrough
  1838. -Wimplicit-fallthrough-per-function
  1839. -Wimplicit-retain-self
  1840. -Wimport-preprocessor-directive-pedantic
  1841. -Wincompatible-library-redeclaration
  1842. -Wincompatible-pointer-types-discards-qualifiers
  1843. -Wincomplete-implementation
  1844. -Wincomplete-module
  1845. -Wincomplete-umbrella
  1846. -Winit-self
  1847. -Wint-conversions
  1848. -Wint-to-void-pointer-cast
  1849. -Winteger-overflow
  1850. -Winvalid-constexpr
  1851. -Winvalid-iboutlet
  1852. -Winvalid-noreturn
  1853. -Winvalid-pp-token
  1854. -Winvalid-source-encoding
  1855. -Winvalid-token-paste
  1856. -Wknr-promoted-parameter
  1857. -Wlarge-by-value-copy
  1858. -Wliteral-conversion
  1859. -Wliteral-range
  1860. -Wlocal-type-template-args
  1861. -Wlogical-op
  1862. -Wloop-analysis
  1863. -Wmain-return-type
  1864. -Wmalformed-warning-check
  1865. -Wmethod-signatures
  1866. -Wmicrosoft
  1867. -Wmicrosoft-exists
  1868. -Wmismatched-parameter-types
  1869. -Wmismatched-return-types
  1870. -Wmissing-field-initializers
  1871. -Wmissing-format-attribute
  1872. -Wmissing-noreturn
  1873. -Wmissing-selector-name
  1874. -Wmissing-sysroot
  1875. -Wmissing-variable-declarations
  1876. -Wmodule-conflict
  1877. -Wnested-anon-types
  1878. -Wnewline-eof
  1879. -Wnon-literal-null-conversion
  1880. -Wnon-pod-varargs
  1881. -Wnonportable-cfstrings
  1882. -Wnormalized=nfkc
  1883. -Wnull-arithmetic
  1884. -Wnull-character
  1885. -Wnull-conversion
  1886. -Wnull-dereference
  1887. -Wout-of-line-declaration
  1888. -Wover-aligned
  1889. -Woverlength-strings
  1890. -Woverride-init
  1891. -Woverriding-method-mismatch
  1892. -Wpointer-type-mismatch
  1893. -Wpredefined-identifier-outside-function
  1894. -Wprotocol-property-synthesis-ambiguity
  1895. -Wreadonly-iboutlet-property
  1896. -Wreadonly-setter-attrs
  1897. -Wreceiver-expr
  1898. -Wreceiver-forward-class
  1899. -Wreceiver-is-weak
  1900. -Wreinterpret-base-class
  1901. -Wrequires-super-attribute
  1902. -Wreserved-user-defined-literal
  1903. -Wreturn-stack-address
  1904. -Wsection
  1905. -Wselector-type-mismatch
  1906. -Wsentinel
  1907. -Wserialized-diagnostics
  1908. -Wshadow
  1909. -Wshift-count-negative
  1910. -Wshift-count-overflow
  1911. -Wshift-negative-value
  1912. -Wshift-overflow=2
  1913. -Wshift-sign-overflow
  1914. -Wshorten-64-to-32
  1915. -Wsizeof-array-argument
  1916. -Wsource-uses-openmp
  1917. -Wstatic-float-init
  1918. -Wstatic-in-inline
  1919. -Wstatic-local-in-inline
  1920. -Wstrict-overflow=1
  1921. -Wstring-compare
  1922. -Wstring-conversion
  1923. -Wstrlcpy-strlcat-size
  1924. -Wstrncat-size
  1925. -Wsuggest-attribute=format
  1926. -Wsuggest-attribute=noreturn
  1927. -Wsuper-class-method-mismatch
  1928. -Wswitch-bool
  1929. -Wsync-nand
  1930. -Wtautological-constant-out-of-range-compare
  1931. -Wtentative-definition-incomplete-type
  1932. -Wtrampolines
  1933. -Wtype-safety
  1934. -Wtypedef-redefinition
  1935. -Wtypename-missing
  1936. -Wundefined-inline
  1937. -Wundefined-internal
  1938. -Wundefined-reinterpret-cast
  1939. -Wunicode
  1940. -Wunicode-whitespace
  1941. -Wunknown-warning-option
  1942. -Wunnamed-type-template-args
  1943. -Wunneeded-member-function
  1944. -Wunsequenced
  1945. -Wunsupported-visibility
  1946. -Wunused-but-set-parameter
  1947. -Wunused-but-set-variable
  1948. -Wunused-command-line-argument
  1949. -Wunused-const-variable=2
  1950. -Wunused-exception-parameter
  1951. -Wunused-local-typedefs
  1952. -Wunused-member-function
  1953. -Wunused-sanitize-argument
  1954. -Wunused-volatile-lvalue
  1955. -Wuser-defined-literals
  1956. -Wvariadic-macros
  1957. -Wvector-conversion
  1958. -Wvector-conversions
  1959. -Wvexing-parse
  1960. -Wvisibility
  1961. -Wvla-extension
  1962. -Wzero-length-array
  1963. ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
  1964. dnl We should re-enable this in some later version. Clang doesn't
  1965. dnl mind, but it causes trouble with GCC.
  1966. dnl -Wstrict-overflow=2
  1967. dnl These seem to require annotations that we don't currently use,
  1968. dnl and they give false positives in our pthreads wrappers. (Clang 4)
  1969. dnl -Wthread-safety
  1970. dnl -Wthread-safety-analysis
  1971. dnl -Wthread-safety-attributes
  1972. dnl -Wthread-safety-beta
  1973. dnl -Wthread-safety-precise
  1974. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1975. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1976. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1977. CFLAGS="$CFLAGS -Wwrite-strings"
  1978. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1979. CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
  1980. CFLAGS="$CFLAGS -Wunused-parameter "
  1981. # These interfere with building main() { return 0; }, which autoconf
  1982. # likes to use as its default program.
  1983. CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
  1984. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  1985. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  1986. fi
  1987. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  1988. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  1989. fi
  1990. if test "x$enable_fatal_warnings" = "xyes"; then
  1991. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  1992. # default autoconf programs are full of errors.
  1993. CFLAGS="$CFLAGS -Werror"
  1994. fi
  1995. fi
  1996. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  1997. case "$host_os" in
  1998. darwin*)
  1999. AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
  2000. esac
  2001. fi
  2002. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  2003. AC_CONFIG_FILES([
  2004. Doxyfile
  2005. Makefile
  2006. contrib/dist/suse/tor.sh
  2007. contrib/operator-tools/tor.logrotate
  2008. contrib/dist/tor.sh
  2009. contrib/dist/torctl
  2010. contrib/dist/tor.service
  2011. src/config/torrc.sample
  2012. src/config/torrc.minimal
  2013. src/rust/.cargo/config
  2014. scripts/maint/checkOptionDocs.pl
  2015. scripts/maint/updateVersions.pl
  2016. ])
  2017. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  2018. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  2019. for file in $regular_mans ; do
  2020. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  2021. echo "==================================";
  2022. echo;
  2023. echo "Building Tor has failed since manpages cannot be built.";
  2024. echo;
  2025. echo "You need asciidoc installed to be able to build the manpages.";
  2026. echo "To build without manpages, use the --disable-asciidoc argument";
  2027. echo "when calling configure.";
  2028. echo;
  2029. echo "==================================";
  2030. exit 1;
  2031. fi
  2032. done
  2033. fi
  2034. if test "$fragile_hardening" = "yes"; then
  2035. AC_MSG_WARN([
  2036. ============
  2037. Warning! Building Tor with --enable-fragile-hardening (also known as
  2038. --enable-expensive-hardening) makes some kinds of attacks harder, but makes
  2039. other kinds of attacks easier. A Tor instance build with this option will be
  2040. somewhat less vulnerable to remote code execution, arithmetic overflow, or
  2041. out-of-bounds read/writes... but at the cost of becoming more vulnerable to
  2042. denial of service attacks. For more information, see
  2043. https://trac.torproject.org/projects/tor/wiki/doc/TorFragileHardening
  2044. ============
  2045. ])
  2046. fi
  2047. AC_OUTPUT