configure.ac 73 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418141914201421142214231424142514261427142814291430143114321433143414351436143714381439144014411442144314441445144614471448144914501451145214531454145514561457145814591460146114621463146414651466146714681469147014711472147314741475147614771478147914801481148214831484148514861487148814891490149114921493149414951496149714981499150015011502150315041505150615071508150915101511151215131514151515161517151815191520152115221523152415251526152715281529153015311532153315341535153615371538153915401541154215431544154515461547154815491550155115521553155415551556155715581559156015611562156315641565156615671568156915701571157215731574157515761577157815791580158115821583158415851586158715881589159015911592159315941595159615971598159916001601160216031604160516061607160816091610161116121613161416151616161716181619162016211622162316241625162616271628162916301631163216331634163516361637163816391640164116421643164416451646164716481649165016511652165316541655165616571658165916601661166216631664166516661667166816691670167116721673167416751676167716781679168016811682168316841685168616871688168916901691169216931694169516961697169816991700170117021703170417051706170717081709171017111712171317141715171617171718171917201721172217231724172517261727172817291730173117321733173417351736173717381739174017411742174317441745174617471748174917501751175217531754175517561757175817591760176117621763176417651766176717681769177017711772177317741775177617771778177917801781178217831784178517861787178817891790179117921793179417951796179717981799180018011802180318041805180618071808180918101811181218131814181518161817181818191820182118221823182418251826182718281829183018311832183318341835183618371838183918401841184218431844184518461847184818491850185118521853185418551856185718581859186018611862186318641865186618671868186918701871187218731874187518761877187818791880188118821883188418851886188718881889189018911892189318941895189618971898189919001901190219031904190519061907190819091910191119121913191419151916191719181919192019211922192319241925192619271928192919301931193219331934193519361937193819391940194119421943194419451946194719481949195019511952195319541955195619571958195919601961196219631964196519661967196819691970197119721973197419751976197719781979198019811982198319841985198619871988198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024202520262027202820292030203120322033203420352036203720382039204020412042204320442045204620472048204920502051205220532054205520562057205820592060206120622063206420652066206720682069207020712072207320742075207620772078207920802081208220832084208520862087208820892090209120922093209420952096209720982099210021012102210321042105210621072108210921102111211221132114211521162117211821192120212121222123212421252126212721282129213021312132213321342135213621372138213921402141214221432144214521462147214821492150215121522153215421552156215721582159216021612162216321642165216621672168216921702171217221732174217521762177217821792180218121822183218421852186218721882189219021912192219321942195219621972198219922002201220222032204220522062207220822092210221122122213221422152216221722182219222022212222222322242225222622272228222922302231223222332234223522362237223822392240224122422243224422452246224722482249225022512252225322542255225622572258225922602261226222632264226522662267226822692270227122722273227422752276227722782279228022812282228322842285228622872288228922902291229222932294229522962297229822992300230123022303230423052306230723082309231023112312231323142315231623172318231923202321232223232324
  1. dnl Copyright (c) 2001-2004, Roger Dingledine
  2. dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
  3. dnl Copyright (c) 2007-2018, The Tor Project, Inc.
  4. dnl See LICENSE for licensing information
  5. AC_PREREQ([2.63])
  6. AC_INIT([tor],[0.3.5.0-alpha-dev])
  7. AC_CONFIG_SRCDIR([src/or/main.c])
  8. AC_CONFIG_MACRO_DIR([m4])
  9. # "foreign" means we don't follow GNU package layout standards
  10. # "1.11" means we require automake version 1.11 or newer
  11. # "subdir-objects" means put .o files in the same directory as the .c files
  12. AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects -Wall -Werror])
  13. m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
  14. AC_CONFIG_HEADERS([orconfig.h])
  15. AC_USE_SYSTEM_EXTENSIONS
  16. AC_CANONICAL_HOST
  17. PKG_PROG_PKG_CONFIG
  18. AC_ARG_ENABLE(openbsd-malloc,
  19. AS_HELP_STRING(--enable-openbsd-malloc, [use malloc code from OpenBSD. Linux only]))
  20. AC_ARG_ENABLE(static-openssl,
  21. AS_HELP_STRING(--enable-static-openssl, [link against a static openssl library. Requires --with-openssl-dir]))
  22. AC_ARG_ENABLE(static-libevent,
  23. AS_HELP_STRING(--enable-static-libevent, [link against a static libevent library. Requires --with-libevent-dir]))
  24. AC_ARG_ENABLE(static-zlib,
  25. AS_HELP_STRING(--enable-static-zlib, [link against a static zlib library. Requires --with-zlib-dir]))
  26. AC_ARG_ENABLE(static-tor,
  27. AS_HELP_STRING(--enable-static-tor, [create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir]))
  28. AC_ARG_ENABLE(unittests,
  29. AS_HELP_STRING(--disable-unittests, [don't build unit tests for Tor. Risky!]))
  30. AC_ARG_ENABLE(coverage,
  31. AS_HELP_STRING(--enable-coverage, [enable coverage support in the unit-test build]))
  32. AC_ARG_ENABLE(asserts-in-tests,
  33. AS_HELP_STRING(--disable-asserts-in-tests, [disable tor_assert() calls in the unit tests, for branch coverage]))
  34. AC_ARG_ENABLE(system-torrc,
  35. AS_HELP_STRING(--disable-system-torrc, [don't look for a system-wide torrc file]))
  36. AC_ARG_ENABLE(libfuzzer,
  37. AS_HELP_STRING(--enable-libfuzzer, [build extra fuzzers based on 'libfuzzer']))
  38. AC_ARG_ENABLE(oss-fuzz,
  39. AS_HELP_STRING(--enable-oss-fuzz, [build extra fuzzers based on 'oss-fuzz' environment]))
  40. AC_ARG_ENABLE(memory-sentinels,
  41. AS_HELP_STRING(--disable-memory-sentinels, [disable code that tries to prevent some kinds of memory access bugs. For fuzzing only.]))
  42. AC_ARG_ENABLE(rust,
  43. AS_HELP_STRING(--enable-rust, [enable rust integration]))
  44. AC_ARG_ENABLE(cargo-online-mode,
  45. AS_HELP_STRING(--enable-cargo-online-mode, [Allow cargo to make network requests to fetch crates. For builds with rust only.]))
  46. AC_ARG_ENABLE(restart-debugging,
  47. AS_HELP_STRING(--enable-restart-debugging, [Build Tor with support for debugging in-process restart. Developers only.]))
  48. AC_ARG_ENABLE(zstd-advanced-apis,
  49. AS_HELP_STRING(--disable-zstd-advanced-apis, [Build without support for zstd's "static-only" APIs.]))
  50. if test "x$enable_coverage" != "xyes" -a "x$enable_asserts_in_tests" = "xno" ; then
  51. AC_MSG_ERROR([Can't disable assertions outside of coverage build])
  52. fi
  53. AM_CONDITIONAL(UNITTESTS_ENABLED, test "x$enable_unittests" != "xno")
  54. AM_CONDITIONAL(COVERAGE_ENABLED, test "x$enable_coverage" = "xyes")
  55. AM_CONDITIONAL(DISABLE_ASSERTS_IN_UNIT_TESTS, test "x$enable_asserts_in_tests" = "xno")
  56. AM_CONDITIONAL(LIBFUZZER_ENABLED, test "x$enable_libfuzzer" = "xyes")
  57. AM_CONDITIONAL(OSS_FUZZ_ENABLED, test "x$enable_oss_fuzz" = "xyes")
  58. AM_CONDITIONAL(USE_RUST, test "x$enable_rust" = "xyes")
  59. if test "$enable_static_tor" = "yes"; then
  60. enable_static_libevent="yes";
  61. enable_static_openssl="yes";
  62. enable_static_zlib="yes";
  63. CFLAGS="$CFLAGS -static"
  64. fi
  65. if test "$enable_system_torrc" = "no"; then
  66. AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
  67. [Defined if we're not going to look for a torrc in SYSCONF])
  68. fi
  69. if test "$enable_memory_sentinels" = "no"; then
  70. AC_DEFINE(DISABLE_MEMORY_SENTINELS, 1,
  71. [Defined if we're turning off memory safety code to look for bugs])
  72. fi
  73. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test "x$enable_openbsd_malloc" = "xyes")
  74. AC_ARG_ENABLE(asciidoc,
  75. AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
  76. [case "${enableval}" in
  77. "yes") asciidoc=true ;;
  78. "no") asciidoc=false ;;
  79. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  80. esac], [asciidoc=true])
  81. # systemd notify support
  82. AC_ARG_ENABLE(systemd,
  83. AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
  84. [case "${enableval}" in
  85. "yes") systemd=true ;;
  86. "no") systemd=false ;;
  87. * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
  88. esac], [systemd=auto])
  89. if test "$enable_restart_debugging" = "yes"; then
  90. AC_DEFINE(ENABLE_RESTART_DEBUGGING, 1,
  91. [Defined if we're building with support for in-process restart debugging.])
  92. fi
  93. if test "$enable_zstd_advanced_apis" != "no"; then
  94. AC_DEFINE(ENABLE_ZSTD_ADVANCED_APIS, 1,
  95. [Defined if we're going to try to use zstd's "static-only" APIs.])
  96. fi
  97. # systemd support
  98. if test "x$enable_systemd" = "xno"; then
  99. have_systemd=no;
  100. else
  101. PKG_CHECK_MODULES(SYSTEMD,
  102. [libsystemd-daemon],
  103. have_systemd=yes,
  104. have_systemd=no)
  105. if test "x$have_systemd" = "xno"; then
  106. AC_MSG_NOTICE([Okay, checking for systemd a different way...])
  107. PKG_CHECK_MODULES(SYSTEMD,
  108. [libsystemd],
  109. have_systemd=yes,
  110. have_systemd=no)
  111. fi
  112. fi
  113. if test "x$have_systemd" = "xyes"; then
  114. AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
  115. TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
  116. TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
  117. PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
  118. [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
  119. fi
  120. AC_SUBST(TOR_SYSTEMD_CFLAGS)
  121. AC_SUBST(TOR_SYSTEMD_LIBS)
  122. if test "x$enable_systemd" = "xyes" -a "x$have_systemd" != "xyes" ; then
  123. AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
  124. fi
  125. case "$host" in
  126. *-*-solaris* )
  127. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  128. ;;
  129. esac
  130. AC_ARG_ENABLE(gcc-warnings,
  131. AS_HELP_STRING(--enable-gcc-warnings, [deprecated alias for enable-fatal-warnings]))
  132. AC_ARG_ENABLE(fatal-warnings,
  133. AS_HELP_STRING(--enable-fatal-warnings, [tell the compiler to treat all warnings as errors.]))
  134. AC_ARG_ENABLE(gcc-warnings-advisory,
  135. AS_HELP_STRING(--disable-gcc-warnings-advisory, [disable the regular verbose warnings]))
  136. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  137. AC_ARG_ENABLE(gcc-hardening,
  138. AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
  139. dnl Deprecated --enable-expensive-hardening but keep it for now for backward compat.
  140. AC_ARG_ENABLE(expensive-hardening,
  141. AS_HELP_STRING(--enable-expensive-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  142. AC_ARG_ENABLE(fragile-hardening,
  143. AS_HELP_STRING(--enable-fragile-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  144. if test "x$enable_expensive_hardening" = "xyes" || test "x$enable_fragile_hardening" = "xyes"; then
  145. fragile_hardening="yes"
  146. AC_DEFINE(DEBUG_SMARTLIST, 1, [Enable smartlist debugging])
  147. fi
  148. dnl Linker hardening options
  149. dnl Currently these options are ELF specific - you can't use this with MacOSX
  150. AC_ARG_ENABLE(linker-hardening,
  151. AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
  152. AC_ARG_ENABLE(local-appdata,
  153. AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
  154. if test "$enable_local_appdata" = "yes"; then
  155. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  156. [Defined if we default to host local appdata paths on Windows])
  157. fi
  158. # Tor2web mode flag
  159. AC_ARG_ENABLE(tor2web-mode,
  160. AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
  161. [if test "x$enableval" = "xyes"; then
  162. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  163. fi])
  164. AC_ARG_ENABLE(tool-name-check,
  165. AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
  166. AC_ARG_ENABLE(seccomp,
  167. AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
  168. AC_ARG_ENABLE(libscrypt,
  169. AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
  170. dnl Enable event tracing which are transformed to debug log statement.
  171. AC_ARG_ENABLE(event-tracing-debug,
  172. AS_HELP_STRING(--enable-event-tracing-debug, [build with event tracing to debug log]))
  173. AM_CONDITIONAL([USE_EVENT_TRACING_DEBUG], [test "x$enable_event_tracing_debug" = "xyes"])
  174. if test x$enable_event_tracing_debug = xyes; then
  175. AC_DEFINE([USE_EVENT_TRACING_DEBUG], [1], [Tracing framework to log debug])
  176. AC_DEFINE([TOR_EVENT_TRACING_ENABLED], [1], [Compile the event tracing instrumentation])
  177. fi
  178. dnl Enable Android only features.
  179. AC_ARG_ENABLE(android,
  180. AS_HELP_STRING(--enable-android, [build with Android features enabled]))
  181. AM_CONDITIONAL([USE_ANDROID], [test "x$enable_android" = "xyes"])
  182. if test "x$enable_android" = "xyes"; then
  183. AC_DEFINE([USE_ANDROID], [1], [Compile with Android specific features enabled])
  184. dnl Check if the Android log library is available.
  185. AC_CHECK_HEADERS([android/log.h])
  186. AC_SEARCH_LIBS(__android_log_write, [log])
  187. fi
  188. dnl ---
  189. dnl Tor modules options. These options are namespaced with --disable-module-XXX
  190. dnl ---
  191. dnl All our modules.
  192. m4_define(MODULES, dirauth)
  193. dnl Directory Authority module.
  194. AC_ARG_ENABLE([module-dirauth],
  195. AS_HELP_STRING([--disable-module-dirauth],
  196. [Do not build tor with the dirauth module]),
  197. [], dnl Action if-given
  198. AC_DEFINE([HAVE_MODULE_DIRAUTH], [1],
  199. [Compile with Directory Authority feature support]))
  200. AM_CONDITIONAL(BUILD_MODULE_DIRAUTH, [test "x$enable_module_dirauth" != "xno"])
  201. dnl Helper variables.
  202. TOR_MODULES_ALL_ENABLED=
  203. AC_DEFUN([ADD_MODULE], [
  204. MODULE=m4_toupper($1)
  205. TOR_MODULES_ALL_ENABLED="${TOR_MODULES_ALL_ENABLED} -DHAVE_MODULE_${MODULE}=1"
  206. ])
  207. m4_foreach_w([module], MODULES, [ADD_MODULE([module])])
  208. AC_SUBST(TOR_MODULES_ALL_ENABLED)
  209. dnl check for the correct "ar" when cross-compiling.
  210. dnl (AM_PROG_AR was new in automake 1.11.2, which we do not yet require,
  211. dnl so kludge up a replacement for the case where it isn't there yet.)
  212. m4_ifdef([AM_PROG_AR],
  213. [AM_PROG_AR],
  214. [AN_MAKEVAR([AR], [AC_PROG_AR])
  215. AN_PROGRAM([ar], [AC_PROG_AR])
  216. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [:])])
  217. AC_PROG_AR])
  218. dnl Check whether the above macro has settled for a simply named tool even
  219. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  220. dnl because that will find any cc on the system, not only the cross-compiler,
  221. dnl and then verify that a binary built with this compiler runs on the
  222. dnl build system. It will then come to the false conclusion that we're not
  223. dnl cross-compiling.
  224. if test "x$enable_tool_name_check" != "xno"; then
  225. if test "x$ac_tool_warned" = "xyes"; then
  226. AC_MSG_ERROR([We are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  227. elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
  228. AC_MSG_ERROR([We think we are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  229. fi
  230. fi
  231. AC_PROG_CC
  232. AC_PROG_CPP
  233. AC_PROG_MAKE_SET
  234. AC_PROG_RANLIB
  235. AC_PROG_SED
  236. AC_ARG_VAR([PERL], [path to Perl binary])
  237. AC_CHECK_PROGS([PERL], [perl])
  238. AM_CONDITIONAL(USE_PERL, [test "x$ac_cv_prog_PERL" != "x"])
  239. dnl check for asciidoc and a2x
  240. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  241. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  242. AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
  243. AM_PROG_CC_C_O
  244. AC_PROG_CC_C99
  245. AC_ARG_VAR([PYTHON], [path to Python binary])
  246. AC_CHECK_PROGS(PYTHON, [ \
  247. python3 \
  248. python3.8 python3.7 python3.6 python3.5 python3.4 \
  249. python \
  250. python2 python2.7])
  251. if test "x$PYTHON" = "x"; then
  252. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  253. fi
  254. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  255. dnl List all external rust crates we depend on here. Include the version
  256. rust_crates=" \
  257. digest-0.7.2 \
  258. libc-0.2.39 \
  259. "
  260. AC_SUBST(rust_crates)
  261. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  262. AC_C_FLEXIBLE_ARRAY_MEMBER
  263. ], [
  264. dnl Maybe we've got an old autoconf...
  265. AC_CACHE_CHECK([for flexible array members],
  266. tor_cv_c_flexarray,
  267. [AC_COMPILE_IFELSE(
  268. AC_LANG_PROGRAM([
  269. struct abc { int a; char b[]; };
  270. ], [
  271. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  272. def->b[0] = 33;
  273. ]),
  274. [tor_cv_c_flexarray=yes],
  275. [tor_cv_c_flexarray=no])])
  276. if test "$tor_cv_flexarray" = "yes"; then
  277. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  278. else
  279. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  280. fi
  281. ])
  282. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  283. tor_cv_c_c99_decl,
  284. [AC_COMPILE_IFELSE(
  285. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  286. [tor_cv_c_c99_decl=yes],
  287. [tor_cv_c_c99_decl=no] )])
  288. if test "$tor_cv_c_c99_decl" != "yes"; then
  289. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  290. fi
  291. AC_CACHE_CHECK([for working C99 designated initializers],
  292. tor_cv_c_c99_designated_init,
  293. [AC_COMPILE_IFELSE(
  294. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  295. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  296. [tor_cv_c_c99_designated_init=yes],
  297. [tor_cv_c_c99_designated_init=no] )])
  298. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  299. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  300. fi
  301. TORUSER=_tor
  302. AC_ARG_WITH(tor-user,
  303. AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
  304. [
  305. TORUSER=$withval
  306. ]
  307. )
  308. AC_SUBST(TORUSER)
  309. TORGROUP=_tor
  310. AC_ARG_WITH(tor-group,
  311. AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
  312. [
  313. TORGROUP=$withval
  314. ]
  315. )
  316. AC_SUBST(TORGROUP)
  317. dnl If _WIN32 is defined and non-zero, we are building for win32
  318. AC_MSG_CHECKING([for win32])
  319. AC_RUN_IFELSE([AC_LANG_SOURCE([
  320. int main(int c, char **v) {
  321. #ifdef _WIN32
  322. #if _WIN32
  323. return 0;
  324. #else
  325. return 1;
  326. #endif
  327. #else
  328. return 2;
  329. #endif
  330. }])],
  331. bwin32=true; AC_MSG_RESULT([yes]),
  332. bwin32=false; AC_MSG_RESULT([no]),
  333. bwin32=cross; AC_MSG_RESULT([cross])
  334. )
  335. if test "$bwin32" = "cross"; then
  336. AC_MSG_CHECKING([for win32 (cross)])
  337. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  338. #ifdef _WIN32
  339. int main(int c, char **v) {return 0;}
  340. #else
  341. #error
  342. int main(int c, char **v) {return x(y);}
  343. #endif
  344. ])],
  345. bwin32=true; AC_MSG_RESULT([yes]),
  346. bwin32=false; AC_MSG_RESULT([no]))
  347. fi
  348. AH_BOTTOM([
  349. #ifdef _WIN32
  350. /* Defined to access windows functions and definitions for >=WinXP */
  351. # ifndef WINVER
  352. # define WINVER 0x0501
  353. # endif
  354. /* Defined to access _other_ windows functions and definitions for >=WinXP */
  355. # ifndef _WIN32_WINNT
  356. # define _WIN32_WINNT 0x0501
  357. # endif
  358. /* Defined to avoid including some windows headers as part of Windows.h */
  359. # ifndef WIN32_LEAN_AND_MEAN
  360. # define WIN32_LEAN_AND_MEAN 1
  361. # endif
  362. #endif
  363. ])
  364. AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$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$enable_fatal_warnings" = "xyes"; then
  393. RUST_WARN=
  394. else
  395. RUST_WARN=#
  396. fi
  397. if test "x$enable_cargo_online_mode" = "xyes"; then
  398. CARGO_ONLINE=
  399. RUST_DL=#
  400. else
  401. CARGO_ONLINE=--frozen
  402. RUST_DL=
  403. dnl When we're not allowed to touch the network, we need crate dependencies
  404. dnl locally available.
  405. AC_MSG_CHECKING([rust crate dependencies])
  406. AC_ARG_VAR([TOR_RUST_DEPENDENCIES], [path to directory with local crate mirror])
  407. if test "x$TOR_RUST_DEPENDENCIES" = "x"; then
  408. TOR_RUST_DEPENDENCIES="${srcdir}/src/ext/rust/crates"
  409. fi
  410. dnl Check whether the path exists before we try to cd into it.
  411. if test ! -d "$TOR_RUST_DEPENDENCIES"; then
  412. AC_MSG_ERROR([Rust dependency directory $TOR_RUST_DEPENDENCIES does not exist. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
  413. ERRORED=1
  414. fi
  415. dnl Make the path absolute, since we'll be using it from within a
  416. dnl subdirectory.
  417. TOR_RUST_DEPENDENCIES=$(cd "$TOR_RUST_DEPENDENCIES" ; pwd)
  418. for dep in $rust_crates; do
  419. if test ! -d "$TOR_RUST_DEPENDENCIES"/"$dep"; then
  420. 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.])
  421. ERRORED=1
  422. fi
  423. done
  424. if test "x$ERRORED" = "x"; then
  425. AC_MSG_RESULT([yes])
  426. fi
  427. fi
  428. dnl This is a workaround for #46797
  429. dnl (a.k.a https://github.com/rust-lang/rust/issues/46797 ). Once the
  430. dnl upstream bug is fixed, we can remove this workaround.
  431. case "$host_os" in
  432. darwin*)
  433. TOR_RUST_EXTRA_LIBS="-lresolv"
  434. ;;
  435. esac
  436. dnl For now both MSVC and MinGW rust libraries will output static libs with
  437. dnl the MSVC naming convention.
  438. if test "$bwin32" = "true"; then
  439. TOR_RUST_STATIC_NAME=tor_rust.lib
  440. else
  441. TOR_RUST_STATIC_NAME=libtor_rust.a
  442. fi
  443. AC_SUBST(TOR_RUST_STATIC_NAME)
  444. AC_SUBST(CARGO_ONLINE)
  445. AC_SUBST(RUST_WARN)
  446. AC_SUBST(RUST_DL)
  447. dnl Let's check the rustc version, too
  448. AC_MSG_CHECKING([rust version])
  449. RUSTC_VERSION=`$RUSTC --version`
  450. RUSTC_VERSION_MAJOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 1`
  451. RUSTC_VERSION_MINOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 2`
  452. if test "x$RUSTC_VERSION_MAJOR" = "x" -o "x$RUSTC_VERSION_MINOR" = "x"; then
  453. AC_MSG_ERROR([rustc version couldn't be identified])
  454. fi
  455. if test "$RUSTC_VERSION_MAJOR" -lt 2 -a "$RUSTC_VERSION_MINOR" -lt 14; then
  456. AC_MSG_ERROR([rustc must be at least version 1.14])
  457. fi
  458. AC_MSG_RESULT([$RUSTC_VERSION])
  459. fi
  460. AC_SUBST(TOR_RUST_EXTRA_LIBS)
  461. AC_SEARCH_LIBS(socket, [socket network])
  462. AC_SEARCH_LIBS(gethostbyname, [nsl])
  463. AC_SEARCH_LIBS(dlopen, [dl])
  464. AC_SEARCH_LIBS(inet_aton, [resolv])
  465. AC_SEARCH_LIBS(backtrace, [execinfo])
  466. saved_LIBS="$LIBS"
  467. AC_SEARCH_LIBS([clock_gettime], [rt])
  468. if test "$LIBS" != "$saved_LIBS"; then
  469. # Looks like we need -lrt for clock_gettime().
  470. have_rt=yes
  471. fi
  472. AC_SEARCH_LIBS(pthread_create, [pthread])
  473. AC_SEARCH_LIBS(pthread_detach, [pthread])
  474. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  475. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  476. AC_CHECK_FUNCS(
  477. _NSGetEnviron \
  478. RtlSecureZeroMemory \
  479. SecureZeroMemory \
  480. accept4 \
  481. backtrace \
  482. backtrace_symbols_fd \
  483. eventfd \
  484. explicit_bzero \
  485. timingsafe_memcmp \
  486. flock \
  487. ftime \
  488. get_current_dir_name \
  489. getaddrinfo \
  490. getifaddrs \
  491. getpass \
  492. getrlimit \
  493. gettimeofday \
  494. gmtime_r \
  495. gnu_get_libc_version \
  496. htonll \
  497. inet_aton \
  498. ioctl \
  499. issetugid \
  500. llround \
  501. localtime_r \
  502. lround \
  503. mach_approximate_time \
  504. memmem \
  505. memset_s \
  506. mmap \
  507. pipe \
  508. pipe2 \
  509. prctl \
  510. readpassphrase \
  511. rint \
  512. sigaction \
  513. socketpair \
  514. statvfs \
  515. strlcat \
  516. strlcpy \
  517. strnlen \
  518. strptime \
  519. strtok_r \
  520. strtoull \
  521. sysconf \
  522. sysctl \
  523. truncate \
  524. uname \
  525. usleep \
  526. vasprintf \
  527. _vscprintf
  528. )
  529. # Apple messed up when they added two functions functions in Sierra: they
  530. # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
  531. # checks. So we should only probe for those functions if we are sure that we
  532. # are not targeting OSX 10.11 or earlier.
  533. AC_MSG_CHECKING([for a pre-Sierra OSX build target])
  534. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  535. #ifdef __APPLE__
  536. # include <AvailabilityMacros.h>
  537. # ifndef MAC_OS_X_VERSION_10_12
  538. # define MAC_OS_X_VERSION_10_12 101200
  539. # endif
  540. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  541. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  542. # error "Running on Mac OSX 10.11 or earlier"
  543. # endif
  544. # endif
  545. #endif
  546. ]], [[]])],
  547. [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
  548. [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
  549. if test "$on_macos_pre_10_12" = "no"; then
  550. AC_CHECK_FUNCS(
  551. clock_gettime \
  552. getentropy \
  553. )
  554. fi
  555. if test "$bwin32" != "true"; then
  556. AC_CHECK_HEADERS(pthread.h)
  557. AC_CHECK_FUNCS(pthread_create)
  558. AC_CHECK_FUNCS(pthread_condattr_setclock)
  559. fi
  560. if test "$bwin32" = "true"; then
  561. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  562. #include <windows.h>
  563. #include <conio.h>
  564. #include <wchar.h>
  565. ])
  566. fi
  567. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  568. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  569. AC_MSG_CHECKING([whether free(NULL) works])
  570. AC_RUN_IFELSE([AC_LANG_PROGRAM([
  571. #include <stdlib.h>
  572. ], [
  573. char *p = NULL;
  574. free(p);
  575. ])],
  576. [free_null_ok=true; AC_MSG_RESULT(yes)],
  577. [free_null_ok=false; AC_MSG_RESULT(no)],
  578. [free_null_ok=cross; AC_MSG_RESULT(cross)])
  579. if test "$free_null_ok" = "false"; then
  580. AC_MSG_ERROR([Your libc implementation doesn't allow free(NULL), as required by C99.])
  581. fi
  582. dnl ------------------------------------------------------
  583. dnl Where do you live, libevent? And how do we call you?
  584. if test "$bwin32" = "true"; then
  585. TOR_LIB_WS32=-lws2_32
  586. TOR_LIB_IPHLPAPI=-liphlpapi
  587. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  588. # think it's actually necessary.
  589. TOR_LIB_GDI=-lgdi32
  590. TOR_LIB_USERENV=-luserenv
  591. else
  592. TOR_LIB_WS32=
  593. TOR_LIB_GDI=
  594. TOR_LIB_USERENV=
  595. fi
  596. AC_SUBST(TOR_LIB_WS32)
  597. AC_SUBST(TOR_LIB_GDI)
  598. AC_SUBST(TOR_LIB_IPHLPAPI)
  599. AC_SUBST(TOR_LIB_USERENV)
  600. tor_libevent_pkg_redhat="libevent"
  601. tor_libevent_pkg_debian="libevent-dev"
  602. tor_libevent_devpkg_redhat="libevent-devel"
  603. tor_libevent_devpkg_debian="libevent-dev"
  604. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  605. dnl linking for static builds.
  606. STATIC_LIBEVENT_FLAGS=""
  607. if test "$enable_static_libevent" = "yes"; then
  608. if test "$have_rt" = "yes"; then
  609. STATIC_LIBEVENT_FLAGS=" -lrt "
  610. fi
  611. fi
  612. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  613. #ifdef _WIN32
  614. #include <winsock2.h>
  615. #endif
  616. #include <sys/time.h>
  617. #include <sys/types.h>
  618. #include <event2/event.h>], [
  619. #ifdef _WIN32
  620. #include <winsock2.h>
  621. #endif
  622. struct event_base;
  623. struct event_base *event_base_new(void);
  624. void event_base_free(struct event_base *);],
  625. [
  626. #ifdef _WIN32
  627. {WSADATA d; WSAStartup(0x101,&d); }
  628. #endif
  629. event_base_free(event_base_new());
  630. ], [--with-libevent-dir], [/opt/libevent])
  631. dnl Determine the incantation needed to link libevent.
  632. save_LIBS="$LIBS"
  633. save_LDFLAGS="$LDFLAGS"
  634. save_CPPFLAGS="$CPPFLAGS"
  635. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  636. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  637. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  638. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  639. if test "$enable_static_libevent" = "yes"; then
  640. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  641. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  642. else
  643. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  644. fi
  645. else
  646. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  647. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  648. 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"))
  649. if test "$ac_cv_search_event_new" != "none required"; then
  650. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  651. fi
  652. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  653. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  654. fi
  655. else
  656. AC_MSG_ERROR("libevent2 is required but the headers could not be found")
  657. fi
  658. fi
  659. dnl Now check for particular libevent functions.
  660. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
  661. evutil_secure_rng_add_bytes \
  662. ])
  663. LIBS="$save_LIBS"
  664. LDFLAGS="$save_LDFLAGS"
  665. CPPFLAGS="$save_CPPFLAGS"
  666. dnl Check that libevent is at least at version 2.0.10, the first stable
  667. dnl release of its series
  668. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  669. AC_MSG_CHECKING([whether Libevent is new enough])
  670. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  671. #include <event2/event.h>
  672. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  673. #error
  674. int x = y(zz);
  675. #else
  676. int x = 1;
  677. #endif
  678. ])], [ AC_MSG_RESULT([yes]) ],
  679. [ AC_MSG_RESULT([no])
  680. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  681. LIBS="$save_LIBS"
  682. LDFLAGS="$save_LDFLAGS"
  683. CPPFLAGS="$save_CPPFLAGS"
  684. AC_SUBST(TOR_LIBEVENT_LIBS)
  685. dnl ------------------------------------------------------
  686. dnl Where do you live, libm?
  687. dnl On some platforms (Haiku/BeOS) the math library is
  688. dnl part of libroot. In which case don't link against lm
  689. TOR_LIB_MATH=""
  690. save_LIBS="$LIBS"
  691. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  692. if test "$ac_cv_search_pow" != "none required"; then
  693. TOR_LIB_MATH="$ac_cv_search_pow"
  694. fi
  695. LIBS="$save_LIBS"
  696. AC_SUBST(TOR_LIB_MATH)
  697. dnl ------------------------------------------------------
  698. dnl Where do you live, openssl? And how do we call you?
  699. tor_openssl_pkg_redhat="openssl"
  700. tor_openssl_pkg_debian="libssl-dev"
  701. tor_openssl_devpkg_redhat="openssl-devel"
  702. tor_openssl_devpkg_debian="libssl-dev"
  703. ALT_openssl_WITHVAL=""
  704. AC_ARG_WITH(ssl-dir,
  705. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  706. [
  707. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  708. ALT_openssl_WITHVAL="$withval"
  709. fi
  710. ])
  711. AC_MSG_NOTICE([Now, we'll look for OpenSSL >= 1.0.1])
  712. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI $TOR_LIB_WS32],
  713. [#include <openssl/ssl.h>
  714. char *getenv(const char *);],
  715. [struct ssl_cipher_st;
  716. unsigned SSL_CIPHER_get_id(const struct ssl_cipher_st *);
  717. char *getenv(const char *);],
  718. dnl This funny-looking test program calls getenv, so that the compiler
  719. dnl will neither make code that call SSL_CIPHER_get_id(NULL) [producing
  720. dnl a crash], nor optimize out the call to SSL_CIPHER_get_id().
  721. dnl We look for SSL_cipher_get_id() because it is present in
  722. dnl OpenSSL >=1.0.1, because it is not deprecated, and because Tor
  723. dnl depends on it.
  724. [if (getenv("THIS_SHOULDNT_BE_SET_X201803")) SSL_CIPHER_get_id((void *)0);], [],
  725. [/usr/local/opt/openssl /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /opt/openssl])
  726. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  727. if test "$enable_static_openssl" = "yes"; then
  728. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  729. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  730. else
  731. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  732. fi
  733. else
  734. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  735. fi
  736. AC_SUBST(TOR_OPENSSL_LIBS)
  737. dnl Now check for particular openssl functions.
  738. save_LIBS="$LIBS"
  739. save_LDFLAGS="$LDFLAGS"
  740. save_CPPFLAGS="$CPPFLAGS"
  741. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  742. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  743. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  744. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  745. #include <openssl/opensslv.h>
  746. #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
  747. #error "too old"
  748. #endif
  749. ]], [[]])],
  750. [ : ],
  751. [ 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.]) ])
  752. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  753. #include <openssl/opensslv.h>
  754. #include <openssl/evp.h>
  755. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  756. #error "no ECC"
  757. #endif
  758. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  759. #error "curves unavailable"
  760. #endif
  761. ]], [[]])],
  762. [ : ],
  763. [ 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.]) ])
  764. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  765. [#include <openssl/ssl.h>
  766. ])
  767. AC_CHECK_FUNCS([ \
  768. SSL_SESSION_get_master_key \
  769. SSL_get_server_random \
  770. SSL_get_client_ciphers \
  771. SSL_get_client_random \
  772. SSL_CIPHER_find \
  773. TLS_method
  774. ])
  775. dnl Check if OpenSSL has scrypt implementation.
  776. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  777. dnl Check if OpenSSL structures are opaque
  778. AC_CHECK_MEMBERS([SSL.state], , ,
  779. [#include <openssl/ssl.h>
  780. ])
  781. AC_CHECK_SIZEOF(SHA_CTX, , [AC_INCLUDES_DEFAULT()
  782. #include <openssl/sha.h>
  783. ])
  784. dnl Define the set of checks for KIST scheduler support.
  785. AC_DEFUN([CHECK_KIST_SUPPORT],[
  786. dnl KIST needs struct tcp_info and for certain members to exist.
  787. AC_CHECK_MEMBERS(
  788. [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss],
  789. , ,[[#include <netinet/tcp.h>]])
  790. dnl KIST needs SIOCOUTQNSD to exist for an ioctl call.
  791. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  792. #include <linux/sockios.h>
  793. #ifndef SIOCOUTQNSD
  794. #error
  795. #endif
  796. ])], have_siocoutqnsd=yes, have_siocoutqnsd=no)
  797. if test "x$have_siocoutqnsd" = "xyes"; then
  798. if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then
  799. if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then
  800. have_kist_support=yes
  801. fi
  802. fi
  803. fi
  804. ])
  805. dnl Now, trigger the check.
  806. CHECK_KIST_SUPPORT
  807. AS_IF([test "x$have_kist_support" = "xyes"],
  808. [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported
  809. on this system])],
  810. [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])])
  811. LIBS="$save_LIBS"
  812. LDFLAGS="$save_LDFLAGS"
  813. CPPFLAGS="$save_CPPFLAGS"
  814. dnl ------------------------------------------------------
  815. dnl Where do you live, zlib? And how do we call you?
  816. tor_zlib_pkg_redhat="zlib"
  817. tor_zlib_pkg_debian="zlib1g"
  818. tor_zlib_devpkg_redhat="zlib-devel"
  819. tor_zlib_devpkg_debian="zlib1g-dev"
  820. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  821. [#include <zlib.h>],
  822. [const char * zlibVersion(void);],
  823. [zlibVersion();], [--with-zlib-dir],
  824. [/opt/zlib])
  825. if test "$enable_static_zlib" = "yes"; then
  826. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  827. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  828. using --enable-static-zlib")
  829. else
  830. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  831. fi
  832. else
  833. TOR_ZLIB_LIBS="-lz"
  834. fi
  835. AC_SUBST(TOR_ZLIB_LIBS)
  836. dnl ------------------------------------------------------
  837. dnl Where we do we find lzma?
  838. AC_ARG_ENABLE(lzma,
  839. AS_HELP_STRING(--enable-lzma, [enable support for the LZMA compression scheme.]),
  840. [case "${enableval}" in
  841. "yes") lzma=true ;;
  842. "no") lzma=false ;;
  843. * ) AC_MSG_ERROR(bad value for --enable-lzma) ;;
  844. esac], [lzma=auto])
  845. if test "x$enable_lzma" = "xno"; then
  846. have_lzma=no;
  847. else
  848. PKG_CHECK_MODULES([LZMA],
  849. [liblzma],
  850. have_lzma=yes,
  851. have_lzma=no)
  852. if test "x$have_lzma" = "xno" ; then
  853. AC_MSG_WARN([Unable to find liblzma.])
  854. fi
  855. fi
  856. if test "x$have_lzma" = "xyes"; then
  857. AC_DEFINE(HAVE_LZMA,1,[Have LZMA])
  858. TOR_LZMA_CFLAGS="${LZMA_CFLAGS}"
  859. TOR_LZMA_LIBS="${LZMA_LIBS}"
  860. fi
  861. AC_SUBST(TOR_LZMA_CFLAGS)
  862. AC_SUBST(TOR_LZMA_LIBS)
  863. dnl ------------------------------------------------------
  864. dnl Where we do we find zstd?
  865. AC_ARG_ENABLE(zstd,
  866. AS_HELP_STRING(--enable-zstd, [enable support for the Zstandard compression scheme.]),
  867. [case "${enableval}" in
  868. "yes") zstd=true ;;
  869. "no") zstd=false ;;
  870. * ) AC_MSG_ERROR(bad value for --enable-zstd) ;;
  871. esac], [zstd=auto])
  872. if test "x$enable_zstd" = "xno"; then
  873. have_zstd=no;
  874. else
  875. PKG_CHECK_MODULES([ZSTD],
  876. [libzstd >= 1.1],
  877. have_zstd=yes,
  878. have_zstd=no)
  879. if test "x$have_zstd" = "xno" ; then
  880. AC_MSG_WARN([Unable to find libzstd.])
  881. fi
  882. fi
  883. if test "x$have_zstd" = "xyes"; then
  884. AC_DEFINE(HAVE_ZSTD,1,[Have Zstd])
  885. TOR_ZSTD_CFLAGS="${ZSTD_CFLAGS}"
  886. TOR_ZSTD_LIBS="${ZSTD_LIBS}"
  887. dnl now check for zstd functions
  888. save_LIBS="$LIBS"
  889. save_CFLAGS="$CFLAGS"
  890. LIBS="$LIBS $ZSTD_LIBS"
  891. CFLAGS="$CFLAGS $ZSTD_CFLAGS"
  892. AC_CHECK_FUNCS(ZSTD_estimateCStreamSize \
  893. ZSTD_estimateDCtxSize)
  894. LIBS="$save_LIBS"
  895. CFLAGS="$save_CFLAGS"
  896. fi
  897. AC_SUBST(TOR_ZSTD_CFLAGS)
  898. AC_SUBST(TOR_ZSTD_LIBS)
  899. dnl ----------------------------------------------------------------------
  900. dnl Check if libcap is available for capabilities.
  901. tor_cap_pkg_debian="libcap2"
  902. tor_cap_pkg_redhat="libcap"
  903. tor_cap_devpkg_debian="libcap-dev"
  904. tor_cap_devpkg_redhat="libcap-devel"
  905. AC_CHECK_LIB([cap], [cap_init], [],
  906. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  907. )
  908. AC_CHECK_FUNCS(cap_set_proc)
  909. dnl ---------------------------------------------------------------------
  910. dnl Now that we know about our major libraries, we can check for compiler
  911. dnl and linker hardening options. We need to do this with the libraries known,
  912. dnl since sometimes the linker will like an option but not be willing to
  913. dnl use it with a build of a library.
  914. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  915. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_LIB_USERENV $TOR_CAP_LIBS"
  916. CFLAGS_FTRAPV=
  917. CFLAGS_FWRAPV=
  918. CFLAGS_ASAN=
  919. CFLAGS_UBSAN=
  920. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  921. #if !defined(__clang__)
  922. #error
  923. #endif])], have_clang=yes, have_clang=no)
  924. if test "x$enable_gcc_hardening" != "xno"; then
  925. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  926. if test "x$have_clang" = "xyes"; then
  927. TOR_CHECK_CFLAGS(-Qunused-arguments)
  928. fi
  929. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  930. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  931. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  932. m4_ifdef([AS_VAR_IF],[
  933. AS_VAR_IF(can_compile, [yes],
  934. AS_VAR_IF(can_link, [yes],
  935. [],
  936. 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.)]))
  937. )])
  938. AS_VAR_POPDEF([can_link])
  939. AS_VAR_POPDEF([can_compile])
  940. TOR_CHECK_CFLAGS(-Wstack-protector)
  941. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  942. if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
  943. TOR_CHECK_CFLAGS(-fPIE)
  944. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  945. fi
  946. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  947. fi
  948. if test "$fragile_hardening" = "yes"; then
  949. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  950. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  951. 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.])
  952. fi
  953. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  954. AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
  955. fi
  956. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  957. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  958. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.*, and with Clang you need libclang_rt.ubsan*])
  959. fi
  960. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  961. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  962. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
  963. fi
  964. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  965. fi
  966. dnl Find the correct libraries to add in order to use the sanitizers.
  967. dnl
  968. dnl When building Rust, Cargo will run the linker with the -nodefaultlibs
  969. dnl option, which will prevent the compiler from linking the sanitizer
  970. dnl libraries it needs. We need to specify them manually.
  971. dnl
  972. dnl What's more, we need to specify them in a linker script rather than
  973. dnl from build.rs: these options aren't allowed in the cargo:rustc-flags
  974. dnl variable.
  975. RUST_LINKER_OPTIONS=""
  976. if test "x$have_clang" = "xyes"; then
  977. if test "x$CFLAGS_ASAN" != "x"; then
  978. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_ASAN"
  979. fi
  980. if test "x$CFLAGS_UBSAN" != "x"; then
  981. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_UBSAN"
  982. fi
  983. else
  984. if test "x$CFLAGS_ASAN" != "x"; then
  985. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lasan"
  986. fi
  987. if test "x$CFLAGS_UBSAN" != "x"; then
  988. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lubsan"
  989. fi
  990. fi
  991. AC_SUBST(RUST_LINKER_OPTIONS)
  992. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  993. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  994. mulodi_fixes_ftrapv=no
  995. if test "$have_clang" = "yes"; then
  996. saved_CFLAGS="$CFLAGS"
  997. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  998. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  999. AC_LINK_IFELSE([
  1000. AC_LANG_SOURCE([[
  1001. #include <stdint.h>
  1002. #include <stdlib.h>
  1003. int main(int argc, char **argv)
  1004. {
  1005. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1006. * (int64_t)atoi(argv[3]);
  1007. return x == 9;
  1008. } ]])],
  1009. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  1010. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  1011. if test "$ftrapv_can_link" = "no"; then
  1012. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  1013. AC_LINK_IFELSE([
  1014. AC_LANG_SOURCE([[
  1015. #include <stdint.h>
  1016. #include <stdlib.h>
  1017. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  1018. *overflow=0;
  1019. return a;
  1020. }
  1021. int main(int argc, char **argv)
  1022. {
  1023. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1024. * (int64_t)atoi(argv[3]);
  1025. return x == 9;
  1026. } ]])],
  1027. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  1028. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  1029. fi
  1030. CFLAGS="$saved_CFLAGS"
  1031. fi
  1032. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  1033. dnl These cflags add bunches of branches, and we haven't been able to
  1034. dnl persuade ourselves that they're suitable for code that needs to be
  1035. dnl constant time.
  1036. AC_SUBST(CFLAGS_BUGTRAP)
  1037. dnl These cflags are variant ones sutable for code that needs to be
  1038. dnl constant-time.
  1039. AC_SUBST(CFLAGS_CONSTTIME)
  1040. if test "x$enable_linker_hardening" != "xno"; then
  1041. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  1042. fi
  1043. # For backtrace support
  1044. TOR_CHECK_LDFLAGS(-rdynamic)
  1045. dnl ------------------------------------------------------
  1046. dnl Now see if we have a -fomit-frame-pointer compiler option.
  1047. saved_CFLAGS="$CFLAGS"
  1048. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  1049. F_OMIT_FRAME_POINTER=''
  1050. if test "$saved_CFLAGS" != "$CFLAGS"; then
  1051. if test "$fragile_hardening" = "yes"; then
  1052. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  1053. fi
  1054. fi
  1055. CFLAGS="$saved_CFLAGS"
  1056. AC_SUBST(F_OMIT_FRAME_POINTER)
  1057. dnl ------------------------------------------------------
  1058. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  1059. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  1060. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  1061. dnl code will work.
  1062. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  1063. dnl ============================================================
  1064. dnl Check for libseccomp
  1065. if test "x$enable_seccomp" != "xno"; then
  1066. AC_CHECK_HEADERS([seccomp.h])
  1067. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  1068. fi
  1069. dnl ============================================================
  1070. dnl Check for libscrypt
  1071. if test "x$enable_libscrypt" != "xno"; then
  1072. AC_CHECK_HEADERS([libscrypt.h])
  1073. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  1074. AC_CHECK_FUNCS([libscrypt_scrypt])
  1075. fi
  1076. dnl ============================================================
  1077. dnl We need an implementation of curve25519.
  1078. dnl set these defaults.
  1079. build_curve25519_donna=no
  1080. build_curve25519_donna_c64=no
  1081. use_curve25519_donna=no
  1082. use_curve25519_nacl=no
  1083. CURVE25519_LIBS=
  1084. dnl The best choice is using curve25519-donna-c64, but that requires
  1085. dnl that we
  1086. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  1087. tor_cv_can_use_curve25519_donna_c64,
  1088. [AC_RUN_IFELSE(
  1089. [AC_LANG_PROGRAM([dnl
  1090. #include <stdint.h>
  1091. typedef unsigned uint128_t __attribute__((mode(TI)));
  1092. int func(uint64_t a, uint64_t b) {
  1093. uint128_t c = ((uint128_t)a) * b;
  1094. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1095. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1096. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1097. (((uint64_t)(c))&0xffffffffL) == 0;
  1098. return ok;
  1099. }
  1100. ], [dnl
  1101. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1102. ((uint64_t)1234567890) << 24);
  1103. return !ok;
  1104. ])],
  1105. [tor_cv_can_use_curve25519_donna_c64=yes],
  1106. [tor_cv_can_use_curve25519_donna_c64=no],
  1107. [AC_LINK_IFELSE(
  1108. [AC_LANG_PROGRAM([dnl
  1109. #include <stdint.h>
  1110. typedef unsigned uint128_t __attribute__((mode(TI)));
  1111. int func(uint64_t a, uint64_t b) {
  1112. uint128_t c = ((uint128_t)a) * b;
  1113. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1114. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1115. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1116. (((uint64_t)(c))&0xffffffffL) == 0;
  1117. return ok;
  1118. }
  1119. ], [dnl
  1120. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1121. ((uint64_t)1234567890) << 24);
  1122. return !ok;
  1123. ])],
  1124. [tor_cv_can_use_curve25519_donna_c64=cross],
  1125. [tor_cv_can_use_curve25519_donna_c64=no])])])
  1126. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  1127. nacl/crypto_scalarmult_curve25519.h])
  1128. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  1129. tor_cv_can_use_curve25519_nacl,
  1130. [tor_saved_LIBS="$LIBS"
  1131. LIBS="$LIBS -lnacl"
  1132. AC_LINK_IFELSE(
  1133. [AC_LANG_PROGRAM([dnl
  1134. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  1135. #include <crypto_scalarmult_curve25519.h>
  1136. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  1137. #include <nacl/crypto_scalarmult_curve25519.h>
  1138. #endif
  1139. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  1140. #error Hey, this is the reference implementation! That's not fast.
  1141. #endif
  1142. ], [
  1143. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  1144. ])], [tor_cv_can_use_curve25519_nacl=yes],
  1145. [tor_cv_can_use_curve25519_nacl=no])
  1146. LIBS="$tor_saved_LIBS" ])
  1147. dnl Okay, now we need to figure out which one to actually use. Fall back
  1148. dnl to curve25519-donna.c
  1149. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  1150. build_curve25519_donna_c64=yes
  1151. use_curve25519_donna=yes
  1152. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  1153. use_curve25519_nacl=yes
  1154. CURVE25519_LIBS=-lnacl
  1155. else
  1156. build_curve25519_donna=yes
  1157. use_curve25519_donna=yes
  1158. fi
  1159. if test "x$use_curve25519_donna" = "xyes"; then
  1160. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  1161. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  1162. fi
  1163. if test "x$use_curve25519_nacl" = "xyes"; then
  1164. AC_DEFINE(USE_CURVE25519_NACL, 1,
  1165. [Defined if we should use a curve25519 from nacl])
  1166. fi
  1167. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  1168. test "x$build_curve25519_donna" = "xyes")
  1169. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  1170. test "x$build_curve25519_donna_c64" = "xyes")
  1171. AC_SUBST(CURVE25519_LIBS)
  1172. dnl Make sure to enable support for large off_t if available.
  1173. AC_SYS_LARGEFILE
  1174. AC_CHECK_HEADERS([errno.h \
  1175. fcntl.h \
  1176. signal.h \
  1177. string.h \
  1178. sys/capability.h \
  1179. sys/fcntl.h \
  1180. sys/stat.h \
  1181. sys/time.h \
  1182. sys/types.h \
  1183. time.h \
  1184. unistd.h \
  1185. arpa/inet.h \
  1186. crt_externs.h \
  1187. execinfo.h \
  1188. gnu/libc-version.h \
  1189. grp.h \
  1190. ifaddrs.h \
  1191. inttypes.h \
  1192. limits.h \
  1193. linux/types.h \
  1194. machine/limits.h \
  1195. malloc.h \
  1196. malloc/malloc.h \
  1197. malloc_np.h \
  1198. netdb.h \
  1199. netinet/in.h \
  1200. netinet/in6.h \
  1201. pwd.h \
  1202. readpassphrase.h \
  1203. stdint.h \
  1204. stdatomic.h \
  1205. sys/eventfd.h \
  1206. sys/file.h \
  1207. sys/ioctl.h \
  1208. sys/limits.h \
  1209. sys/mman.h \
  1210. sys/param.h \
  1211. sys/prctl.h \
  1212. sys/random.h \
  1213. sys/resource.h \
  1214. sys/select.h \
  1215. sys/socket.h \
  1216. sys/statvfs.h \
  1217. sys/syscall.h \
  1218. sys/sysctl.h \
  1219. sys/syslimits.h \
  1220. sys/time.h \
  1221. sys/types.h \
  1222. sys/un.h \
  1223. sys/utime.h \
  1224. sys/wait.h \
  1225. syslog.h \
  1226. utime.h])
  1227. AC_CHECK_HEADERS(sys/param.h)
  1228. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  1229. [#ifdef HAVE_SYS_TYPES_H
  1230. #include <sys/types.h>
  1231. #endif
  1232. #ifdef HAVE_SYS_SOCKET_H
  1233. #include <sys/socket.h>
  1234. #endif])
  1235. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  1236. [#ifdef HAVE_SYS_TYPES_H
  1237. #include <sys/types.h>
  1238. #endif
  1239. #ifdef HAVE_SYS_SOCKET_H
  1240. #include <sys/socket.h>
  1241. #endif
  1242. #ifdef HAVE_NET_IF_H
  1243. #include <net/if.h>
  1244. #endif
  1245. #ifdef HAVE_NETINET_IN_H
  1246. #include <netinet/in.h>
  1247. #endif])
  1248. AC_CHECK_HEADERS(linux/if.h,[],[],
  1249. [
  1250. #ifdef HAVE_SYS_SOCKET_H
  1251. #include <sys/socket.h>
  1252. #endif
  1253. ])
  1254. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  1255. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  1256. [#ifdef HAVE_SYS_TYPES_H
  1257. #include <sys/types.h>
  1258. #endif
  1259. #ifdef HAVE_SYS_SOCKET_H
  1260. #include <sys/socket.h>
  1261. #endif
  1262. #ifdef HAVE_LIMITS_H
  1263. #include <limits.h>
  1264. #endif
  1265. #ifdef HAVE_LINUX_TYPES_H
  1266. #include <linux/types.h>
  1267. #endif
  1268. #ifdef HAVE_NETINET_IN6_H
  1269. #include <netinet/in6.h>
  1270. #endif
  1271. #ifdef HAVE_NETINET_IN_H
  1272. #include <netinet/in.h>
  1273. #endif])
  1274. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  1275. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  1276. [#ifdef HAVE_SYS_TYPES_H
  1277. #include <sys/types.h>
  1278. #endif
  1279. #ifdef HAVE_SYS_SOCKET_H
  1280. #include <sys/socket.h>
  1281. #endif
  1282. #ifdef HAVE_LIMITS_H
  1283. #include <limits.h>
  1284. #endif
  1285. #ifdef HAVE_LINUX_TYPES_H
  1286. #include <linux/types.h>
  1287. #endif
  1288. #ifdef HAVE_NETINET_IN6_H
  1289. #include <netinet/in6.h>
  1290. #endif
  1291. #ifdef HAVE_NETINET_IN_H
  1292. #include <netinet/in.h>
  1293. #endif
  1294. #ifdef HAVE_LINUX_IF_H
  1295. #include <linux/if.h>
  1296. #endif])
  1297. transparent_ok=0
  1298. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  1299. transparent_ok=1
  1300. fi
  1301. if test "x$linux_netfilter_ipv4" = "x1"; then
  1302. transparent_ok=1
  1303. fi
  1304. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  1305. transparent_ok=1
  1306. fi
  1307. if test "x$transparent_ok" = "x1"; then
  1308. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  1309. else
  1310. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  1311. fi
  1312. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1313. [#ifdef HAVE_SYS_TYPES_H
  1314. #include <sys/types.h>
  1315. #endif
  1316. #ifdef HAVE_SYS_TIME_H
  1317. #include <sys/time.h>
  1318. #endif])
  1319. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  1320. dnl Watch out.
  1321. AC_CHECK_SIZEOF(int8_t)
  1322. AC_CHECK_SIZEOF(int16_t)
  1323. AC_CHECK_SIZEOF(int32_t)
  1324. AC_CHECK_SIZEOF(int64_t)
  1325. AC_CHECK_SIZEOF(uint8_t)
  1326. AC_CHECK_SIZEOF(uint16_t)
  1327. AC_CHECK_SIZEOF(uint32_t)
  1328. AC_CHECK_SIZEOF(uint64_t)
  1329. AC_CHECK_SIZEOF(intptr_t)
  1330. AC_CHECK_SIZEOF(uintptr_t)
  1331. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  1332. AC_CHECK_SIZEOF(char)
  1333. AC_CHECK_SIZEOF(short)
  1334. AC_CHECK_SIZEOF(int)
  1335. AC_CHECK_SIZEOF(long)
  1336. AC_CHECK_SIZEOF(long long)
  1337. AC_CHECK_SIZEOF(__int64)
  1338. AC_CHECK_SIZEOF(void *)
  1339. AC_CHECK_SIZEOF(time_t)
  1340. AC_CHECK_SIZEOF(size_t)
  1341. AC_CHECK_SIZEOF(pid_t)
  1342. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1343. AC_PC_FROM_UCONTEXT([:])
  1344. dnl used to include sockaddr_storage, but everybody has that.
  1345. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1346. [#ifdef HAVE_SYS_TYPES_H
  1347. #include <sys/types.h>
  1348. #endif
  1349. #ifdef HAVE_NETINET_IN_H
  1350. #include <netinet/in.h>
  1351. #endif
  1352. #ifdef HAVE_NETINET_IN6_H
  1353. #include <netinet/in6.h>
  1354. #endif
  1355. #ifdef HAVE_SYS_SOCKET_H
  1356. #include <sys/socket.h>
  1357. #endif
  1358. #ifdef _WIN32
  1359. #define _WIN32_WINNT 0x0501
  1360. #define WIN32_LEAN_AND_MEAN
  1361. #include <winsock2.h>
  1362. #include <ws2tcpip.h>
  1363. #endif
  1364. ])
  1365. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1366. [#ifdef HAVE_SYS_TYPES_H
  1367. #include <sys/types.h>
  1368. #endif
  1369. #ifdef HAVE_NETINET_IN_H
  1370. #include <netinet/in.h>
  1371. #endif
  1372. #ifdef HAVE_NETINET_IN6_H
  1373. #include <netinet/in6.h>
  1374. #endif
  1375. #ifdef HAVE_SYS_SOCKET_H
  1376. #include <sys/socket.h>
  1377. #endif
  1378. #ifdef _WIN32
  1379. #define _WIN32_WINNT 0x0501
  1380. #define WIN32_LEAN_AND_MEAN
  1381. #include <winsock2.h>
  1382. #include <ws2tcpip.h>
  1383. #endif
  1384. ])
  1385. AC_CHECK_TYPES([rlim_t], , ,
  1386. [#ifdef HAVE_SYS_TYPES_H
  1387. #include <sys/types.h>
  1388. #endif
  1389. #ifdef HAVE_SYS_TIME_H
  1390. #include <sys/time.h>
  1391. #endif
  1392. #ifdef HAVE_SYS_RESOURCE_H
  1393. #include <sys/resource.h>
  1394. #endif
  1395. ])
  1396. AX_CHECK_SIGN([time_t],
  1397. [ : ],
  1398. [ : ], [
  1399. #ifdef HAVE_SYS_TYPES_H
  1400. #include <sys/types.h>
  1401. #endif
  1402. #ifdef HAVE_SYS_TIME_H
  1403. #include <sys/time.h>
  1404. #endif
  1405. #ifdef HAVE_TIME_H
  1406. #include <time.h>
  1407. #endif
  1408. ])
  1409. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1410. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1411. fi
  1412. AX_CHECK_SIGN([size_t],
  1413. [ tor_cv_size_t_signed=yes ],
  1414. [ tor_cv_size_t_signed=no ], [
  1415. #ifdef HAVE_SYS_TYPES_H
  1416. #include <sys/types.h>
  1417. #endif
  1418. ])
  1419. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1420. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1421. fi
  1422. AX_CHECK_SIGN([enum always],
  1423. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1424. [ : ], [
  1425. enum always { AAA, BBB, CCC };
  1426. ])
  1427. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1428. #ifdef HAVE_SYS_SOCKET_H
  1429. #include <sys/socket.h>
  1430. #endif
  1431. ])
  1432. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1433. AC_CHECK_SIZEOF(cell_t)
  1434. # Now make sure that NULL can be represented as zero bytes.
  1435. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1436. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1437. [[#include <stdlib.h>
  1438. #include <string.h>
  1439. #include <stdio.h>
  1440. #ifdef HAVE_STDDEF_H
  1441. #include <stddef.h>
  1442. #endif
  1443. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1444. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1445. [tor_cv_null_is_zero=yes],
  1446. [tor_cv_null_is_zero=no],
  1447. [tor_cv_null_is_zero=cross])])
  1448. if test "$tor_cv_null_is_zero" = "cross"; then
  1449. # Cross-compiling; let's hope that the target isn't raving mad.
  1450. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1451. fi
  1452. if test "$tor_cv_null_is_zero" != "no"; then
  1453. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1454. [Define to 1 iff memset(0) sets pointers to NULL])
  1455. fi
  1456. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1457. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1458. [[#include <stdlib.h>
  1459. #include <string.h>
  1460. #include <stdio.h>
  1461. #ifdef HAVE_STDDEF_H
  1462. #include <stddef.h>
  1463. #endif
  1464. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1465. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1466. [tor_cv_dbl0_is_zero=yes],
  1467. [tor_cv_dbl0_is_zero=no],
  1468. [tor_cv_dbl0_is_zero=cross])])
  1469. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1470. # Cross-compiling; let's hope that the target isn't raving mad.
  1471. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1472. fi
  1473. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1474. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1475. [Define to 1 iff memset(0) sets doubles to 0.0])
  1476. fi
  1477. # And what happens when we malloc zero?
  1478. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1479. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1480. [[#include <stdlib.h>
  1481. #include <string.h>
  1482. #include <stdio.h>
  1483. #ifdef HAVE_STDDEF_H
  1484. #include <stddef.h>
  1485. #endif
  1486. int main () { return malloc(0)?0:1; }]])],
  1487. [tor_cv_malloc_zero_works=yes],
  1488. [tor_cv_malloc_zero_works=no],
  1489. [tor_cv_malloc_zero_works=cross])])
  1490. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1491. # Cross-compiling; let's hope that the target isn't raving mad.
  1492. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1493. fi
  1494. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1495. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1496. [Define to 1 iff malloc(0) returns a pointer])
  1497. fi
  1498. # whether we seem to be in a 2s-complement world.
  1499. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1500. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1501. [[int main () { int problem = ((-99) != (~99)+1);
  1502. return problem ? 1 : 0; }]])],
  1503. [tor_cv_twos_complement=yes],
  1504. [tor_cv_twos_complement=no],
  1505. [tor_cv_twos_complement=cross])])
  1506. if test "$tor_cv_twos_complement" = "cross"; then
  1507. # Cross-compiling; let's hope that the target isn't raving mad.
  1508. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1509. fi
  1510. if test "$tor_cv_twos_complement" != "no"; then
  1511. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1512. [Define to 1 iff we represent negative integers with
  1513. two's complement])
  1514. fi
  1515. # What does shifting a negative value do?
  1516. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1517. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1518. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1519. [tor_cv_sign_extend=yes],
  1520. [tor_cv_sign_extend=no],
  1521. [tor_cv_sign_extend=cross])])
  1522. if test "$tor_cv_sign_extend" = "cross"; then
  1523. # Cross-compiling; let's hope that the target isn't raving mad.
  1524. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1525. fi
  1526. if test "$tor_cv_sign_extend" != "no"; then
  1527. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1528. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1529. fi
  1530. # Is uint8_t the same type as unsigned char?
  1531. AC_CACHE_CHECK([whether uint8_t is the same type as unsigned char], tor_cv_uint8_uchar,
  1532. [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1533. #include <stdint.h>
  1534. extern uint8_t c;
  1535. unsigned char c;]])],
  1536. [tor_cv_uint8_uchar=yes],
  1537. [tor_cv_uint8_uchar=no],
  1538. [tor_cv_uint8_uchar=cross])])
  1539. if test "$tor_cv_uint8_uchar" = "cross"; then
  1540. AC_MSG_NOTICE([Cross-compiling: we'll assume that uint8_t is the same type as unsigned char])
  1541. fi
  1542. if test "$tor_cv_uint8_uchar" = "no"; then
  1543. AC_MSG_ERROR([We assume that uint8_t is the same type as unsigned char, but your compiler disagrees.])
  1544. fi
  1545. AC_ARG_WITH(tcmalloc,
  1546. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
  1547. [ tcmalloc=yes ], [ tcmalloc=no ])
  1548. if test "x$tcmalloc" = "xyes"; then
  1549. LDFLAGS="-ltcmalloc $LDFLAGS"
  1550. fi
  1551. using_custom_malloc=no
  1552. if test "x$enable_openbsd_malloc" = "xyes"; then
  1553. using_custom_malloc=yes
  1554. fi
  1555. if test "x$tcmalloc" = "xyes"; then
  1556. using_custom_malloc=yes
  1557. fi
  1558. if test "$using_custom_malloc" = "no"; then
  1559. AC_CHECK_FUNCS(mallinfo)
  1560. fi
  1561. # By default, we're going to assume we don't have mlockall()
  1562. # bionic and other platforms have various broken mlockall subsystems.
  1563. # Some systems don't have a working mlockall, some aren't linkable,
  1564. # and some have it but don't declare it.
  1565. AC_CHECK_FUNCS(mlockall)
  1566. AC_CHECK_DECLS([mlockall], , , [
  1567. #ifdef HAVE_SYS_MMAN_H
  1568. #include <sys/mman.h>
  1569. #endif])
  1570. # Allow user to specify an alternate syslog facility
  1571. AC_ARG_WITH(syslog-facility,
  1572. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1573. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1574. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1575. AC_SUBST(LOGFACILITY)
  1576. # Check if we have getresuid and getresgid
  1577. AC_CHECK_FUNCS(getresuid getresgid)
  1578. # Check for gethostbyname_r in all its glorious incompatible versions.
  1579. # (This logic is based on that in Python's configure.in)
  1580. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1581. [Define this if you have any gethostbyname_r()])
  1582. AC_CHECK_FUNC(gethostbyname_r, [
  1583. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1584. OLD_CFLAGS=$CFLAGS
  1585. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1586. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1587. #include <netdb.h>
  1588. ]], [[
  1589. char *cp1, *cp2;
  1590. struct hostent *h1, *h2;
  1591. int i1, i2;
  1592. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1593. ]])],[
  1594. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1595. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1596. [Define this if gethostbyname_r takes 6 arguments])
  1597. AC_MSG_RESULT(6)
  1598. ], [
  1599. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1600. #include <netdb.h>
  1601. ]], [[
  1602. char *cp1, *cp2;
  1603. struct hostent *h1;
  1604. int i1, i2;
  1605. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1606. ]])], [
  1607. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1608. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1609. [Define this if gethostbyname_r takes 5 arguments])
  1610. AC_MSG_RESULT(5)
  1611. ], [
  1612. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1613. #include <netdb.h>
  1614. ]], [[
  1615. char *cp1;
  1616. struct hostent *h1;
  1617. struct hostent_data hd;
  1618. (void) gethostbyname_r(cp1,h1,&hd);
  1619. ]])], [
  1620. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1621. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1622. [Define this if gethostbyname_r takes 3 arguments])
  1623. AC_MSG_RESULT(3)
  1624. ], [
  1625. AC_MSG_RESULT(0)
  1626. ])
  1627. ])
  1628. ])
  1629. CFLAGS=$OLD_CFLAGS
  1630. ])
  1631. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1632. tor_cv_have_func_macro,
  1633. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1634. #include <stdio.h>
  1635. int main(int c, char **v) { puts(__func__); }])],
  1636. tor_cv_have_func_macro=yes,
  1637. tor_cv_have_func_macro=no))
  1638. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1639. tor_cv_have_FUNC_macro,
  1640. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1641. #include <stdio.h>
  1642. int main(int c, char **v) { puts(__FUNC__); }])],
  1643. tor_cv_have_FUNC_macro=yes,
  1644. tor_cv_have_FUNC_macro=no))
  1645. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1646. tor_cv_have_FUNCTION_macro,
  1647. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1648. #include <stdio.h>
  1649. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1650. tor_cv_have_FUNCTION_macro=yes,
  1651. tor_cv_have_FUNCTION_macro=no))
  1652. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1653. tor_cv_have_environ_declared,
  1654. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1655. #ifdef HAVE_UNISTD_H
  1656. #include <unistd.h>
  1657. #endif
  1658. #include <stdlib.h>
  1659. int main(int c, char **v) { char **t = environ; }])],
  1660. tor_cv_have_environ_declared=yes,
  1661. tor_cv_have_environ_declared=no))
  1662. if test "$tor_cv_have_func_macro" = "yes"; then
  1663. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1664. fi
  1665. if test "$tor_cv_have_FUNC_macro" = "yes"; then
  1666. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1667. fi
  1668. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1669. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1670. [Defined if the compiler supports __FUNCTION__])
  1671. fi
  1672. if test "$tor_cv_have_environ_declared" = "yes"; then
  1673. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1674. [Defined if we have extern char **environ already declared])
  1675. fi
  1676. # $prefix stores the value of the --prefix command line option, or
  1677. # NONE if the option wasn't set. In the case that it wasn't set, make
  1678. # it be the default, so that we can use it to expand directories now.
  1679. if test "x$prefix" = "xNONE"; then
  1680. prefix=$ac_default_prefix
  1681. fi
  1682. # and similarly for $exec_prefix
  1683. if test "x$exec_prefix" = "xNONE"; then
  1684. exec_prefix=$prefix
  1685. fi
  1686. if test "x$BUILDDIR" = "x"; then
  1687. BUILDDIR=`pwd`
  1688. fi
  1689. AC_SUBST(BUILDDIR)
  1690. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1691. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1692. if test "x$SRCDIR" = "x"; then
  1693. SRCDIR=$(cd "$srcdir"; pwd)
  1694. fi
  1695. AH_TEMPLATE([SRCDIR],[tor's sourcedir directory])
  1696. AC_DEFINE_UNQUOTED(SRCDIR,"$SRCDIR")
  1697. if test "x$CONFDIR" = "x"; then
  1698. CONFDIR=`eval echo $sysconfdir/tor`
  1699. fi
  1700. AC_SUBST(CONFDIR)
  1701. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1702. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1703. BINDIR=`eval echo $bindir`
  1704. AC_SUBST(BINDIR)
  1705. LOCALSTATEDIR=`eval echo $localstatedir`
  1706. AC_SUBST(LOCALSTATEDIR)
  1707. if test "$bwin32" = "true"; then
  1708. # Test if the linker supports the --nxcompat and --dynamicbase options
  1709. # for Windows
  1710. save_LDFLAGS="$LDFLAGS"
  1711. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1712. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1713. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1714. [AC_MSG_RESULT([yes])]
  1715. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1716. [AC_MSG_RESULT([no])]
  1717. )
  1718. LDFLAGS="$save_LDFLAGS"
  1719. fi
  1720. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1721. # than autoconf's macros like.
  1722. if test "$GCC" = "yes"; then
  1723. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1724. # accident waiting to happen.
  1725. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1726. else
  1727. # Override optimization level for non-gcc compilers
  1728. CFLAGS="$CFLAGS -O"
  1729. enable_gcc_warnings=no
  1730. enable_gcc_warnings_advisory=no
  1731. fi
  1732. # Warnings implies advisory-warnings and -Werror.
  1733. if test "$enable_gcc_warnings" = "yes"; then
  1734. enable_gcc_warnings_advisory=yes
  1735. enable_fatal_warnings=yes
  1736. fi
  1737. # OS X Lion started deprecating the system openssl. Let's just disable
  1738. # all deprecation warnings on OS X. Also, to potentially make the binary
  1739. # a little smaller, let's enable dead_strip.
  1740. case "$host_os" in
  1741. darwin*)
  1742. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1743. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1744. esac
  1745. # Add some more warnings which we use in development but not in the
  1746. # released versions. (Some relevant gcc versions can't handle these.)
  1747. #
  1748. # Note that we have to do this near the end of the autoconf process, or
  1749. # else we may run into problems when these warnings hit on the testing C
  1750. # programs that autoconf wants to build.
  1751. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1752. case "$host" in
  1753. *-*-openbsd* | *-*-bitrig*)
  1754. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1755. # That's fine, except that the headers don't pass -Wredundant-decls.
  1756. # Therefore, let's disable -Wsystem-headers when we're building
  1757. # with maximal warnings on OpenBSD.
  1758. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1759. esac
  1760. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1761. # have it work better.
  1762. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1763. # This warning was added in gcc 4.3, but it appears to generate
  1764. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1765. #CFLAGS="$CFLAGS -Wlogical-op"
  1766. m4_foreach_w([warning_flag], [
  1767. -Waddress
  1768. -Waddress-of-array-temporary
  1769. -Waddress-of-temporary
  1770. -Wambiguous-macro
  1771. -Wanonymous-pack-parens
  1772. -Warc
  1773. -Warc-abi
  1774. -Warc-bridge-casts-disallowed-in-nonarc
  1775. -Warc-maybe-repeated-use-of-weak
  1776. -Warc-performSelector-leaks
  1777. -Warc-repeated-use-of-weak
  1778. -Warray-bounds
  1779. -Warray-bounds-pointer-arithmetic
  1780. -Wasm
  1781. -Wasm-operand-widths
  1782. -Watomic-properties
  1783. -Watomic-property-with-user-defined-accessor
  1784. -Wauto-import
  1785. -Wauto-storage-class
  1786. -Wauto-var-id
  1787. -Wavailability
  1788. -Wbackslash-newline-escape
  1789. -Wbad-array-new-length
  1790. -Wbind-to-temporary-copy
  1791. -Wbitfield-constant-conversion
  1792. -Wbool-conversion
  1793. -Wbool-conversions
  1794. -Wbuiltin-requires-header
  1795. -Wchar-align
  1796. -Wcompare-distinct-pointer-types
  1797. -Wcomplex-component-init
  1798. -Wconditional-type-mismatch
  1799. -Wconfig-macros
  1800. -Wconstant-conversion
  1801. -Wconstant-logical-operand
  1802. -Wconstexpr-not-const
  1803. -Wcustom-atomic-properties
  1804. -Wdangling-field
  1805. -Wdangling-initializer-list
  1806. -Wdate-time
  1807. -Wdelegating-ctor-cycles
  1808. -Wdeprecated-implementations
  1809. -Wdeprecated-register
  1810. -Wdirect-ivar-access
  1811. -Wdiscard-qual
  1812. -Wdistributed-object-modifiers
  1813. -Wdivision-by-zero
  1814. -Wdollar-in-identifier-extension
  1815. -Wdouble-promotion
  1816. -Wduplicate-decl-specifier
  1817. -Wduplicate-enum
  1818. -Wduplicate-method-arg
  1819. -Wduplicate-method-match
  1820. -Wduplicated-cond
  1821. -Wdynamic-class-memaccess
  1822. -Wembedded-directive
  1823. -Wempty-translation-unit
  1824. -Wenum-conversion
  1825. -Wexit-time-destructors
  1826. -Wexplicit-ownership-type
  1827. -Wextern-initializer
  1828. -Wextra
  1829. -Wextra-semi
  1830. -Wextra-tokens
  1831. -Wflexible-array-extensions
  1832. -Wfloat-conversion
  1833. -Wformat-non-iso
  1834. -Wfour-char-constants
  1835. -Wgcc-compat
  1836. -Wglobal-constructors
  1837. -Wgnu-array-member-paren-init
  1838. -Wgnu-designator
  1839. -Wgnu-static-float-init
  1840. -Wheader-guard
  1841. -Wheader-hygiene
  1842. -Widiomatic-parentheses
  1843. -Wignored-attributes
  1844. -Wimplicit-atomic-properties
  1845. -Wimplicit-conversion-floating-point-to-bool
  1846. -Wimplicit-exception-spec-mismatch
  1847. -Wimplicit-fallthrough
  1848. -Wimplicit-fallthrough-per-function
  1849. -Wimplicit-retain-self
  1850. -Wimport-preprocessor-directive-pedantic
  1851. -Wincompatible-library-redeclaration
  1852. -Wincompatible-pointer-types-discards-qualifiers
  1853. -Wincomplete-implementation
  1854. -Wincomplete-module
  1855. -Wincomplete-umbrella
  1856. -Winit-self
  1857. -Wint-conversions
  1858. -Wint-to-void-pointer-cast
  1859. -Winteger-overflow
  1860. -Winvalid-constexpr
  1861. -Winvalid-iboutlet
  1862. -Winvalid-noreturn
  1863. -Winvalid-pp-token
  1864. -Winvalid-source-encoding
  1865. -Winvalid-token-paste
  1866. -Wknr-promoted-parameter
  1867. -Wlarge-by-value-copy
  1868. -Wliteral-conversion
  1869. -Wliteral-range
  1870. -Wlocal-type-template-args
  1871. -Wlogical-op
  1872. -Wloop-analysis
  1873. -Wmain-return-type
  1874. -Wmalformed-warning-check
  1875. -Wmethod-signatures
  1876. -Wmicrosoft
  1877. -Wmicrosoft-exists
  1878. -Wmismatched-parameter-types
  1879. -Wmismatched-return-types
  1880. -Wmissing-field-initializers
  1881. -Wmissing-format-attribute
  1882. -Wmissing-noreturn
  1883. -Wmissing-selector-name
  1884. -Wmissing-sysroot
  1885. -Wmissing-variable-declarations
  1886. -Wmodule-conflict
  1887. -Wnested-anon-types
  1888. -Wnewline-eof
  1889. -Wnon-literal-null-conversion
  1890. -Wnon-pod-varargs
  1891. -Wnonportable-cfstrings
  1892. -Wnormalized=nfkc
  1893. -Wnull-arithmetic
  1894. -Wnull-character
  1895. -Wnull-conversion
  1896. -Wnull-dereference
  1897. -Wout-of-line-declaration
  1898. -Wover-aligned
  1899. -Woverlength-strings
  1900. -Woverride-init
  1901. -Woverriding-method-mismatch
  1902. -Wpointer-type-mismatch
  1903. -Wpredefined-identifier-outside-function
  1904. -Wprotocol-property-synthesis-ambiguity
  1905. -Wreadonly-iboutlet-property
  1906. -Wreadonly-setter-attrs
  1907. -Wreceiver-expr
  1908. -Wreceiver-forward-class
  1909. -Wreceiver-is-weak
  1910. -Wreinterpret-base-class
  1911. -Wrequires-super-attribute
  1912. -Wreserved-user-defined-literal
  1913. -Wreturn-stack-address
  1914. -Wsection
  1915. -Wselector-type-mismatch
  1916. -Wsentinel
  1917. -Wserialized-diagnostics
  1918. -Wshadow
  1919. -Wshift-count-negative
  1920. -Wshift-count-overflow
  1921. -Wshift-negative-value
  1922. -Wshift-overflow=2
  1923. -Wshift-sign-overflow
  1924. -Wshorten-64-to-32
  1925. -Wsizeof-array-argument
  1926. -Wsource-uses-openmp
  1927. -Wstatic-float-init
  1928. -Wstatic-in-inline
  1929. -Wstatic-local-in-inline
  1930. -Wstrict-overflow=1
  1931. -Wstring-compare
  1932. -Wstring-conversion
  1933. -Wstrlcpy-strlcat-size
  1934. -Wstrncat-size
  1935. -Wsuggest-attribute=format
  1936. -Wsuggest-attribute=noreturn
  1937. -Wsuper-class-method-mismatch
  1938. -Wswitch-bool
  1939. -Wsync-nand
  1940. -Wtautological-constant-out-of-range-compare
  1941. -Wtentative-definition-incomplete-type
  1942. -Wtrampolines
  1943. -Wtype-safety
  1944. -Wtypedef-redefinition
  1945. -Wtypename-missing
  1946. -Wundefined-inline
  1947. -Wundefined-internal
  1948. -Wundefined-reinterpret-cast
  1949. -Wunicode
  1950. -Wunicode-whitespace
  1951. -Wunknown-warning-option
  1952. -Wunnamed-type-template-args
  1953. -Wunneeded-member-function
  1954. -Wunsequenced
  1955. -Wunsupported-visibility
  1956. -Wunused-but-set-parameter
  1957. -Wunused-but-set-variable
  1958. -Wunused-command-line-argument
  1959. -Wunused-const-variable=2
  1960. -Wunused-exception-parameter
  1961. -Wunused-local-typedefs
  1962. -Wunused-member-function
  1963. -Wunused-sanitize-argument
  1964. -Wunused-volatile-lvalue
  1965. -Wuser-defined-literals
  1966. -Wvariadic-macros
  1967. -Wvector-conversion
  1968. -Wvector-conversions
  1969. -Wvexing-parse
  1970. -Wvisibility
  1971. -Wvla-extension
  1972. -Wzero-length-array
  1973. ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
  1974. dnl We should re-enable this in some later version. Clang doesn't
  1975. dnl mind, but it causes trouble with GCC.
  1976. dnl -Wstrict-overflow=2
  1977. dnl These seem to require annotations that we don't currently use,
  1978. dnl and they give false positives in our pthreads wrappers. (Clang 4)
  1979. dnl -Wthread-safety
  1980. dnl -Wthread-safety-analysis
  1981. dnl -Wthread-safety-attributes
  1982. dnl -Wthread-safety-beta
  1983. dnl -Wthread-safety-precise
  1984. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1985. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1986. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1987. CFLAGS="$CFLAGS -Wwrite-strings"
  1988. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1989. CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
  1990. CFLAGS="$CFLAGS -Wunused-parameter "
  1991. # These interfere with building main() { return 0; }, which autoconf
  1992. # likes to use as its default program.
  1993. CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
  1994. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  1995. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  1996. fi
  1997. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  1998. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  1999. fi
  2000. if test "x$enable_fatal_warnings" = "xyes"; then
  2001. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  2002. # default autoconf programs are full of errors.
  2003. CFLAGS="$CFLAGS -Werror"
  2004. fi
  2005. fi
  2006. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  2007. case "$host_os" in
  2008. darwin*)
  2009. AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
  2010. esac
  2011. fi
  2012. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  2013. AC_CONFIG_FILES([
  2014. Doxyfile
  2015. Makefile
  2016. config.rust
  2017. link_rust.sh
  2018. contrib/dist/suse/tor.sh
  2019. contrib/operator-tools/tor.logrotate
  2020. contrib/dist/tor.sh
  2021. contrib/dist/torctl
  2022. contrib/dist/tor.service
  2023. src/config/torrc.sample
  2024. src/config/torrc.minimal
  2025. src/rust/.cargo/config
  2026. scripts/maint/checkOptionDocs.pl
  2027. scripts/maint/updateVersions.pl
  2028. ], [
  2029. chmod +x contrib/dist/suse/tor.sh
  2030. chmod +x link_rust.sh
  2031. chmod +x contrib/dist/tor.sh
  2032. chmod +x contrib/dist/torctl
  2033. chmod +x scripts/maint/checkOptionDocs.pl
  2034. chmod +x scripts/maint/updateVersions.pl
  2035. ])
  2036. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  2037. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  2038. for file in $regular_mans ; do
  2039. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  2040. echo "==================================";
  2041. echo;
  2042. echo "Building Tor has failed since manpages cannot be built.";
  2043. echo;
  2044. echo "You need asciidoc installed to be able to build the manpages.";
  2045. echo "To build without manpages, use the --disable-asciidoc argument";
  2046. echo "when calling configure.";
  2047. echo;
  2048. echo "==================================";
  2049. exit 1;
  2050. fi
  2051. done
  2052. fi
  2053. if test "$fragile_hardening" = "yes"; then
  2054. AC_MSG_WARN([
  2055. ============
  2056. Warning! Building Tor with --enable-fragile-hardening (also known as
  2057. --enable-expensive-hardening) makes some kinds of attacks harder, but makes
  2058. other kinds of attacks easier. A Tor instance build with this option will be
  2059. somewhat less vulnerable to remote code execution, arithmetic overflow, or
  2060. out-of-bounds read/writes... but at the cost of becoming more vulnerable to
  2061. denial of service attacks. For more information, see
  2062. https://trac.torproject.org/projects/tor/wiki/doc/TorFragileHardening
  2063. ============
  2064. ])
  2065. fi
  2066. AC_OUTPUT