configure.ac 75 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152215231524152515261527152815291530153115321533153415351536153715381539154015411542154315441545154615471548154915501551155215531554155515561557155815591560156115621563156415651566156715681569157015711572157315741575157615771578157915801581158215831584158515861587158815891590159115921593159415951596159715981599160016011602160316041605160616071608160916101611161216131614161516161617161816191620162116221623162416251626162716281629163016311632163316341635163616371638163916401641164216431644164516461647164816491650165116521653165416551656165716581659166016611662166316641665166616671668166916701671167216731674167516761677167816791680168116821683168416851686168716881689169016911692169316941695169616971698169917001701170217031704170517061707170817091710171117121713171417151716171717181719172017211722172317241725172617271728172917301731173217331734173517361737173817391740174117421743174417451746174717481749175017511752175317541755175617571758175917601761176217631764176517661767176817691770177117721773177417751776177717781779178017811782178317841785178617871788178917901791179217931794179517961797179817991800180118021803180418051806180718081809181018111812181318141815181618171818181918201821182218231824182518261827182818291830183118321833183418351836183718381839184018411842184318441845184618471848184918501851185218531854185518561857185818591860186118621863186418651866186718681869187018711872187318741875187618771878187918801881188218831884188518861887188818891890189118921893189418951896189718981899190019011902190319041905190619071908190919101911191219131914191519161917191819191920192119221923192419251926192719281929193019311932193319341935193619371938193919401941194219431944194519461947194819491950195119521953195419551956195719581959196019611962196319641965196619671968196919701971197219731974197519761977197819791980198119821983198419851986198719881989199019911992199319941995199619971998199920002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025202620272028202920302031203220332034203520362037203820392040204120422043204420452046204720482049205020512052205320542055205620572058205920602061206220632064206520662067206820692070207120722073207420752076207720782079208020812082208320842085208620872088208920902091209220932094209520962097209820992100210121022103210421052106210721082109211021112112211321142115211621172118211921202121212221232124212521262127212821292130213121322133213421352136213721382139214021412142214321442145214621472148214921502151215221532154215521562157215821592160216121622163216421652166216721682169217021712172217321742175217621772178217921802181218221832184218521862187218821892190219121922193219421952196219721982199220022012202220322042205220622072208220922102211221222132214221522162217221822192220222122222223222422252226222722282229223022312232223322342235223622372238223922402241224222432244224522462247224822492250225122522253225422552256225722582259226022612262226322642265226622672268226922702271227222732274227522762277227822792280228122822283228422852286228722882289229022912292229322942295229622972298229923002301230223032304230523062307230823092310231123122313231423152316231723182319232023212322232323242325232623272328232923302331233223332334233523362337233823392340234123422343234423452346234723482349235023512352235323542355235623572358235923602361236223632364236523662367
  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],[0.3.4.4-rc])
  7. AC_CONFIG_SRCDIR([src/or/main.c])
  8. AC_CONFIG_MACRO_DIR([m4])
  9. # "foreign" means we don't follow GNU package layout standards
  10. # "1.11" means we require automake version 1.11 or newer
  11. # "subdir-objects" means put .o files in the same directory as the .c files
  12. AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects -Wall -Werror])
  13. m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
  14. AC_CONFIG_HEADERS([orconfig.h])
  15. AC_USE_SYSTEM_EXTENSIONS
  16. AC_CANONICAL_HOST
  17. PKG_PROG_PKG_CONFIG
  18. if test -f "/etc/redhat-release"; then
  19. if test -f "/usr/kerberos/include"; then
  20. CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
  21. fi
  22. fi
  23. # Not a no-op; we want to make sure that CPPFLAGS is set before we use
  24. # the += operator on it in src/or/Makefile.am
  25. CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
  26. AC_ARG_ENABLE(openbsd-malloc,
  27. AS_HELP_STRING(--enable-openbsd-malloc, [use malloc code from OpenBSD. Linux only]))
  28. AC_ARG_ENABLE(static-openssl,
  29. AS_HELP_STRING(--enable-static-openssl, [link against a static openssl library. Requires --with-openssl-dir]))
  30. AC_ARG_ENABLE(static-libevent,
  31. AS_HELP_STRING(--enable-static-libevent, [link against a static libevent library. Requires --with-libevent-dir]))
  32. AC_ARG_ENABLE(static-zlib,
  33. AS_HELP_STRING(--enable-static-zlib, [link against a static zlib library. Requires --with-zlib-dir]))
  34. AC_ARG_ENABLE(static-tor,
  35. AS_HELP_STRING(--enable-static-tor, [create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir]))
  36. AC_ARG_ENABLE(unittests,
  37. AS_HELP_STRING(--disable-unittests, [don't build unit tests for Tor. Risky!]))
  38. AC_ARG_ENABLE(coverage,
  39. AS_HELP_STRING(--enable-coverage, [enable coverage support in the unit-test build]))
  40. AC_ARG_ENABLE(asserts-in-tests,
  41. AS_HELP_STRING(--disable-asserts-in-tests, [disable tor_assert() calls in the unit tests, for branch coverage]))
  42. AC_ARG_ENABLE(system-torrc,
  43. AS_HELP_STRING(--disable-system-torrc, [don't look for a system-wide torrc file]))
  44. AC_ARG_ENABLE(libfuzzer,
  45. AS_HELP_STRING(--enable-libfuzzer, [build extra fuzzers based on 'libfuzzer']))
  46. AC_ARG_ENABLE(oss-fuzz,
  47. AS_HELP_STRING(--enable-oss-fuzz, [build extra fuzzers based on 'oss-fuzz' environment]))
  48. AC_ARG_ENABLE(memory-sentinels,
  49. AS_HELP_STRING(--disable-memory-sentinels, [disable code that tries to prevent some kinds of memory access bugs. For fuzzing only.]))
  50. AC_ARG_ENABLE(rust,
  51. AS_HELP_STRING(--enable-rust, [enable rust integration]))
  52. AC_ARG_ENABLE(cargo-online-mode,
  53. AS_HELP_STRING(--enable-cargo-online-mode, [Allow cargo to make network requests to fetch crates. For builds with rust only.]))
  54. AC_ARG_ENABLE(restart-debugging,
  55. AS_HELP_STRING(--enable-restart-debugging, [Build Tor with support for debugging in-process restart. Developers only.]))
  56. AC_ARG_ENABLE(zstd-advanced-apis,
  57. AS_HELP_STRING(--disable-zstd-advanced-apis, [Build without support for zstd's "static-only" APIs.]))
  58. if test "x$enable_coverage" != "xyes" -a "x$enable_asserts_in_tests" = "xno" ; then
  59. AC_MSG_ERROR([Can't disable assertions outside of coverage build])
  60. fi
  61. AM_CONDITIONAL(UNITTESTS_ENABLED, test "x$enable_unittests" != "xno")
  62. AM_CONDITIONAL(COVERAGE_ENABLED, test "x$enable_coverage" = "xyes")
  63. AM_CONDITIONAL(DISABLE_ASSERTS_IN_UNIT_TESTS, test "x$enable_asserts_in_tests" = "xno")
  64. AM_CONDITIONAL(LIBFUZZER_ENABLED, test "x$enable_libfuzzer" = "xyes")
  65. AM_CONDITIONAL(OSS_FUZZ_ENABLED, test "x$enable_oss_fuzz" = "xyes")
  66. AM_CONDITIONAL(USE_RUST, test "x$enable_rust" = "xyes")
  67. if test "$enable_static_tor" = "yes"; then
  68. enable_static_libevent="yes";
  69. enable_static_openssl="yes";
  70. enable_static_zlib="yes";
  71. CFLAGS="$CFLAGS -static"
  72. fi
  73. if test "$enable_system_torrc" = "no"; then
  74. AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
  75. [Defined if we're not going to look for a torrc in SYSCONF])
  76. fi
  77. if test "$enable_memory_sentinels" = "no"; then
  78. AC_DEFINE(DISABLE_MEMORY_SENTINELS, 1,
  79. [Defined if we're turning off memory safety code to look for bugs])
  80. fi
  81. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test "x$enable_openbsd_malloc" = "xyes")
  82. AC_ARG_ENABLE(asciidoc,
  83. AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
  84. [case "${enableval}" in
  85. "yes") asciidoc=true ;;
  86. "no") asciidoc=false ;;
  87. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  88. esac], [asciidoc=true])
  89. # systemd notify support
  90. AC_ARG_ENABLE(systemd,
  91. AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
  92. [case "${enableval}" in
  93. "yes") systemd=true ;;
  94. "no") systemd=false ;;
  95. * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
  96. esac], [systemd=auto])
  97. if test "$enable_restart_debugging" = "yes"; then
  98. AC_DEFINE(ENABLE_RESTART_DEBUGGING, 1,
  99. [Defined if we're building with support for in-process restart debugging.])
  100. fi
  101. if test "$enable_zstd_advanced_apis" != "no"; then
  102. AC_DEFINE(ENABLE_ZSTD_ADVANCED_APIS, 1,
  103. [Defined if we're going to try to use zstd's "static-only" APIs.])
  104. fi
  105. # systemd support
  106. if test "x$enable_systemd" = "xno"; then
  107. have_systemd=no;
  108. else
  109. PKG_CHECK_MODULES(SYSTEMD,
  110. [libsystemd-daemon],
  111. have_systemd=yes,
  112. have_systemd=no)
  113. if test "x$have_systemd" = "xno"; then
  114. AC_MSG_NOTICE([Okay, checking for systemd a different way...])
  115. PKG_CHECK_MODULES(SYSTEMD,
  116. [libsystemd],
  117. have_systemd=yes,
  118. have_systemd=no)
  119. fi
  120. fi
  121. if test "x$have_systemd" = "xyes"; then
  122. AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
  123. TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
  124. TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
  125. PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
  126. [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
  127. fi
  128. AC_SUBST(TOR_SYSTEMD_CFLAGS)
  129. AC_SUBST(TOR_SYSTEMD_LIBS)
  130. if test "x$enable_systemd" = "xyes" -a "x$have_systemd" != "xyes" ; then
  131. AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
  132. fi
  133. case "$host" in
  134. *-*-solaris* )
  135. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  136. ;;
  137. esac
  138. AC_ARG_ENABLE(gcc-warnings,
  139. AS_HELP_STRING(--enable-gcc-warnings, [deprecated alias for enable-fatal-warnings]))
  140. AC_ARG_ENABLE(fatal-warnings,
  141. AS_HELP_STRING(--enable-fatal-warnings, [tell the compiler to treat all warnings as errors.]))
  142. AC_ARG_ENABLE(gcc-warnings-advisory,
  143. AS_HELP_STRING(--disable-gcc-warnings-advisory, [disable the regular verbose warnings]))
  144. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  145. AC_ARG_ENABLE(gcc-hardening,
  146. AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
  147. dnl Deprecated --enable-expensive-hardening but keep it for now for backward compat.
  148. AC_ARG_ENABLE(expensive-hardening,
  149. AS_HELP_STRING(--enable-expensive-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  150. AC_ARG_ENABLE(fragile-hardening,
  151. AS_HELP_STRING(--enable-fragile-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  152. if test "x$enable_expensive_hardening" = "xyes" || test "x$enable_fragile_hardening" = "xyes"; then
  153. fragile_hardening="yes"
  154. AC_DEFINE(DEBUG_SMARTLIST, 1, [Enable smartlist debugging])
  155. fi
  156. dnl Linker hardening options
  157. dnl Currently these options are ELF specific - you can't use this with MacOSX
  158. AC_ARG_ENABLE(linker-hardening,
  159. AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
  160. AC_ARG_ENABLE(local-appdata,
  161. AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
  162. if test "$enable_local_appdata" = "yes"; then
  163. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  164. [Defined if we default to host local appdata paths on Windows])
  165. fi
  166. # Tor2web mode flag
  167. AC_ARG_ENABLE(tor2web-mode,
  168. AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
  169. [if test "x$enableval" = "xyes"; then
  170. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  171. fi])
  172. AC_ARG_ENABLE(tool-name-check,
  173. AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
  174. AC_ARG_ENABLE(seccomp,
  175. AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
  176. AC_ARG_ENABLE(libscrypt,
  177. AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
  178. dnl Enable event tracing which are transformed to debug log statement.
  179. AC_ARG_ENABLE(event-tracing-debug,
  180. AS_HELP_STRING(--enable-event-tracing-debug, [build with event tracing to debug log]))
  181. AM_CONDITIONAL([USE_EVENT_TRACING_DEBUG], [test "x$enable_event_tracing_debug" = "xyes"])
  182. if test x$enable_event_tracing_debug = xyes; then
  183. AC_DEFINE([USE_EVENT_TRACING_DEBUG], [1], [Tracing framework to log debug])
  184. AC_DEFINE([TOR_EVENT_TRACING_ENABLED], [1], [Compile the event tracing instrumentation])
  185. fi
  186. dnl Enable Android only features.
  187. AC_ARG_ENABLE(android,
  188. AS_HELP_STRING(--enable-android, [build with Android features enabled]))
  189. AM_CONDITIONAL([USE_ANDROID], [test "x$enable_android" = "xyes"])
  190. if test "x$enable_android" = "xyes"; then
  191. AC_DEFINE([USE_ANDROID], [1], [Compile with Android specific features enabled])
  192. dnl Check if the Android log library is available.
  193. AC_CHECK_HEADERS([android/log.h])
  194. AC_SEARCH_LIBS(__android_log_write, [log])
  195. fi
  196. dnl ---
  197. dnl Tor modules options. These options are namespaced with --disable-module-XXX
  198. dnl ---
  199. dnl All our modules.
  200. m4_define(MODULES, dirauth)
  201. dnl Directory Authority module.
  202. AC_ARG_ENABLE([module-dirauth],
  203. AS_HELP_STRING([--disable-module-dirauth],
  204. [Do not build tor with the dirauth module]),
  205. [], dnl Action if-given
  206. AC_DEFINE([HAVE_MODULE_DIRAUTH], [1],
  207. [Compile with Directory Authority feature support]))
  208. AM_CONDITIONAL(BUILD_MODULE_DIRAUTH, [test "x$enable_module_dirauth" != "xno"])
  209. dnl Helper variables.
  210. TOR_MODULES_ALL_ENABLED=
  211. AC_DEFUN([ADD_MODULE], [
  212. MODULE=m4_toupper($1)
  213. TOR_MODULES_ALL_ENABLED="${TOR_MODULES_ALL_ENABLED} -DHAVE_MODULE_${MODULE}=1"
  214. ])
  215. m4_foreach_w([module], MODULES, [ADD_MODULE([module])])
  216. AC_SUBST(TOR_MODULES_ALL_ENABLED)
  217. dnl check for the correct "ar" when cross-compiling.
  218. dnl (AM_PROG_AR was new in automake 1.11.2, which we do not yet require,
  219. dnl so kludge up a replacement for the case where it isn't there yet.)
  220. m4_ifdef([AM_PROG_AR],
  221. [AM_PROG_AR],
  222. [AN_MAKEVAR([AR], [AC_PROG_AR])
  223. AN_PROGRAM([ar], [AC_PROG_AR])
  224. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [:])])
  225. AC_PROG_AR])
  226. dnl Check whether the above macro has settled for a simply named tool even
  227. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  228. dnl because that will find any cc on the system, not only the cross-compiler,
  229. dnl and then verify that a binary built with this compiler runs on the
  230. dnl build system. It will then come to the false conclusion that we're not
  231. dnl cross-compiling.
  232. if test "x$enable_tool_name_check" != "xno"; then
  233. if test "x$ac_tool_warned" = "xyes"; then
  234. AC_MSG_ERROR([We are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  235. elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
  236. AC_MSG_ERROR([We think we are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  237. fi
  238. fi
  239. AC_PROG_CC
  240. AC_PROG_CPP
  241. AC_PROG_MAKE_SET
  242. AC_PROG_RANLIB
  243. AC_PROG_SED
  244. AC_ARG_VAR([PERL], [path to Perl binary])
  245. AC_CHECK_PROGS([PERL], [perl])
  246. AM_CONDITIONAL(USE_PERL, [test "x$ac_cv_prog_PERL" != "x"])
  247. dnl check for asciidoc and a2x
  248. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  249. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  250. AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
  251. AM_PROG_CC_C_O
  252. AC_PROG_CC_C99
  253. AC_ARG_VAR([PYTHON], [path to Python binary])
  254. AC_CHECK_PROGS(PYTHON, [ \
  255. python3 \
  256. python3.8 python3.7 python3.6 python3.5 python3.4 \
  257. python \
  258. python2 python2.7])
  259. if test "x$PYTHON" = "x"; then
  260. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  261. fi
  262. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  263. dnl List all external rust crates we depend on here. Include the version
  264. rust_crates=" \
  265. digest-0.7.2 \
  266. libc-0.2.39 \
  267. "
  268. AC_SUBST(rust_crates)
  269. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  270. AC_C_FLEXIBLE_ARRAY_MEMBER
  271. ], [
  272. dnl Maybe we've got an old autoconf...
  273. AC_CACHE_CHECK([for flexible array members],
  274. tor_cv_c_flexarray,
  275. [AC_COMPILE_IFELSE(
  276. AC_LANG_PROGRAM([
  277. struct abc { int a; char b[]; };
  278. ], [
  279. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  280. def->b[0] = 33;
  281. ]),
  282. [tor_cv_c_flexarray=yes],
  283. [tor_cv_c_flexarray=no])])
  284. if test "$tor_cv_flexarray" = "yes"; then
  285. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  286. else
  287. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  288. fi
  289. ])
  290. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  291. tor_cv_c_c99_decl,
  292. [AC_COMPILE_IFELSE(
  293. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  294. [tor_cv_c_c99_decl=yes],
  295. [tor_cv_c_c99_decl=no] )])
  296. if test "$tor_cv_c_c99_decl" != "yes"; then
  297. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  298. fi
  299. AC_CACHE_CHECK([for working C99 designated initializers],
  300. tor_cv_c_c99_designated_init,
  301. [AC_COMPILE_IFELSE(
  302. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  303. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  304. [tor_cv_c_c99_designated_init=yes],
  305. [tor_cv_c_c99_designated_init=no] )])
  306. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  307. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  308. fi
  309. TORUSER=_tor
  310. AC_ARG_WITH(tor-user,
  311. AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
  312. [
  313. TORUSER=$withval
  314. ]
  315. )
  316. AC_SUBST(TORUSER)
  317. TORGROUP=_tor
  318. AC_ARG_WITH(tor-group,
  319. AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
  320. [
  321. TORGROUP=$withval
  322. ]
  323. )
  324. AC_SUBST(TORGROUP)
  325. dnl If _WIN32 is defined and non-zero, we are building for win32
  326. AC_MSG_CHECKING([for win32])
  327. AC_RUN_IFELSE([AC_LANG_SOURCE([
  328. int main(int c, char **v) {
  329. #ifdef _WIN32
  330. #if _WIN32
  331. return 0;
  332. #else
  333. return 1;
  334. #endif
  335. #else
  336. return 2;
  337. #endif
  338. }])],
  339. bwin32=true; AC_MSG_RESULT([yes]),
  340. bwin32=false; AC_MSG_RESULT([no]),
  341. bwin32=cross; AC_MSG_RESULT([cross])
  342. )
  343. if test "$bwin32" = "cross"; then
  344. AC_MSG_CHECKING([for win32 (cross)])
  345. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  346. #ifdef _WIN32
  347. int main(int c, char **v) {return 0;}
  348. #else
  349. #error
  350. int main(int c, char **v) {return x(y);}
  351. #endif
  352. ])],
  353. bwin32=true; AC_MSG_RESULT([yes]),
  354. bwin32=false; AC_MSG_RESULT([no]))
  355. fi
  356. AH_BOTTOM([
  357. #ifdef _WIN32
  358. /* Defined to access windows functions and definitions for >=WinXP */
  359. # ifndef WINVER
  360. # define WINVER 0x0501
  361. # endif
  362. /* Defined to access _other_ windows functions and definitions for >=WinXP */
  363. # ifndef _WIN32_WINNT
  364. # define _WIN32_WINNT 0x0501
  365. # endif
  366. /* Defined to avoid including some windows headers as part of Windows.h */
  367. # ifndef WIN32_LEAN_AND_MEAN
  368. # define WIN32_LEAN_AND_MEAN 1
  369. # endif
  370. #endif
  371. ])
  372. AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
  373. AM_CONDITIONAL(BUILD_LIBTORRUNNER, test "x$bwin32" != "xtrue")
  374. dnl Enable C99 when compiling with MIPSpro
  375. AC_MSG_CHECKING([for MIPSpro compiler])
  376. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  377. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  378. #error
  379. return x(y);
  380. #endif
  381. ])],
  382. bmipspro=false; AC_MSG_RESULT(no),
  383. bmipspro=true; AC_MSG_RESULT(yes))
  384. if test "$bmipspro" = "true"; then
  385. CFLAGS="$CFLAGS -c99"
  386. fi
  387. AC_C_BIGENDIAN
  388. AC_ARG_VAR([TOR_RUST_TARGET], [Rust target, must be specified when cross-compiling (HOST != BUILD). example: i686-pc-windows-gnu])
  389. if test "x$enable_rust" = "xyes"; then
  390. AC_ARG_VAR([RUSTC], [path to the rustc binary])
  391. AC_CHECK_PROG([RUSTC], [rustc], [rustc],[no])
  392. if test "x$RUSTC" = "xno"; then
  393. AC_MSG_ERROR([rustc unavailable but rust integration requested.])
  394. fi
  395. AC_ARG_VAR([CARGO], [path to the cargo binary])
  396. AC_CHECK_PROG([CARGO], [cargo], [cargo],[no])
  397. if test "x$CARGO" = "xno"; then
  398. AC_MSG_ERROR([cargo unavailable but rust integration requested.])
  399. fi
  400. AC_DEFINE([HAVE_RUST], 1, [have Rust])
  401. if test "x$enable_fatal_warnings" = "xyes"; then
  402. RUST_WARN=
  403. else
  404. RUST_WARN=#
  405. fi
  406. if test "x$enable_cargo_online_mode" = "xyes"; then
  407. CARGO_ONLINE=
  408. RUST_DL=#
  409. else
  410. CARGO_ONLINE=--frozen
  411. RUST_DL=
  412. dnl When we're not allowed to touch the network, we need crate dependencies
  413. dnl locally available.
  414. AC_MSG_CHECKING([rust crate dependencies])
  415. AC_ARG_VAR([TOR_RUST_DEPENDENCIES], [path to directory with local crate mirror])
  416. if test "x$TOR_RUST_DEPENDENCIES" = "x"; then
  417. TOR_RUST_DEPENDENCIES="${srcdir}/src/ext/rust/crates"
  418. fi
  419. dnl Check whether the path exists before we try to cd into it.
  420. if test ! -d "$TOR_RUST_DEPENDENCIES"; then
  421. AC_MSG_ERROR([Rust dependency directory $TOR_RUST_DEPENDENCIES does not exist. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
  422. ERRORED=1
  423. fi
  424. dnl Make the path absolute, since we'll be using it from within a
  425. dnl subdirectory.
  426. TOR_RUST_DEPENDENCIES=$(cd "$TOR_RUST_DEPENDENCIES" ; pwd)
  427. for dep in $rust_crates; do
  428. if test ! -d "$TOR_RUST_DEPENDENCIES"/"$dep"; then
  429. 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.])
  430. ERRORED=1
  431. fi
  432. done
  433. if test "x$ERRORED" = "x"; then
  434. AC_MSG_RESULT([yes])
  435. fi
  436. fi
  437. dnl This is a workaround for #46797
  438. dnl (a.k.a https://github.com/rust-lang/rust/issues/46797 ). Once the
  439. dnl upstream bug is fixed, we can remove this workaround.
  440. case "$host_os" in
  441. darwin*)
  442. TOR_RUST_EXTRA_LIBS="-lresolv"
  443. ;;
  444. esac
  445. dnl For now both MSVC and MinGW rust libraries will output static libs with
  446. dnl the MSVC naming convention.
  447. if test "$bwin32" = "true"; then
  448. tor_rust_static_name=tor_rust.lib
  449. else
  450. tor_rust_static_name=libtor_rust.a
  451. fi
  452. AC_CANONICAL_BUILD
  453. if test -n "$TOR_RUST_TARGET"; then
  454. if test "$host" = "$build"; then
  455. AC_MSG_ERROR([HOST = BUILD is invalid if TOR_RUST_TARGET is specified, see configure --help for more information.])
  456. fi
  457. RUST_TARGET_PROP="target = '$TOR_RUST_TARGET'"
  458. TOR_RUST_LIB_PATH="src/rust/target/$TOR_RUST_TARGET/release/$tor_rust_static_name"
  459. else
  460. if test "$host" != "$build"; then
  461. AC_MSG_ERROR([TOR_RUST_TARGET must be specified when cross-compiling with Rust enabled.])
  462. fi
  463. RUST_TARGET_PROP=
  464. TOR_RUST_LIB_PATH="src/rust/target/release/$tor_rust_static_name"
  465. fi
  466. AC_SUBST(RUST_TARGET_PROP)
  467. AC_SUBST(TOR_RUST_LIB_PATH)
  468. AC_SUBST(CARGO_ONLINE)
  469. AC_SUBST(RUST_WARN)
  470. AC_SUBST(RUST_DL)
  471. dnl Let's check the rustc version, too
  472. AC_MSG_CHECKING([rust version])
  473. RUSTC_VERSION=`$RUSTC --version`
  474. RUSTC_VERSION_MAJOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 1`
  475. RUSTC_VERSION_MINOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 2`
  476. if test "x$RUSTC_VERSION_MAJOR" = "x" -o "x$RUSTC_VERSION_MINOR" = "x"; then
  477. AC_MSG_ERROR([rustc version couldn't be identified])
  478. fi
  479. if test "$RUSTC_VERSION_MAJOR" -lt 2 -a "$RUSTC_VERSION_MINOR" -lt 14; then
  480. AC_MSG_ERROR([rustc must be at least version 1.14])
  481. fi
  482. AC_MSG_RESULT([$RUSTC_VERSION])
  483. fi
  484. AC_SUBST(TOR_RUST_EXTRA_LIBS)
  485. AC_SEARCH_LIBS(socket, [socket network])
  486. AC_SEARCH_LIBS(gethostbyname, [nsl])
  487. AC_SEARCH_LIBS(dlopen, [dl])
  488. AC_SEARCH_LIBS(inet_aton, [resolv])
  489. AC_SEARCH_LIBS(backtrace, [execinfo])
  490. saved_LIBS="$LIBS"
  491. AC_SEARCH_LIBS([clock_gettime], [rt])
  492. if test "$LIBS" != "$saved_LIBS"; then
  493. # Looks like we need -lrt for clock_gettime().
  494. have_rt=yes
  495. fi
  496. AC_SEARCH_LIBS(pthread_create, [pthread])
  497. AC_SEARCH_LIBS(pthread_detach, [pthread])
  498. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  499. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  500. AC_CHECK_FUNCS(
  501. _NSGetEnviron \
  502. RtlSecureZeroMemory \
  503. SecureZeroMemory \
  504. accept4 \
  505. backtrace \
  506. backtrace_symbols_fd \
  507. eventfd \
  508. explicit_bzero \
  509. timingsafe_memcmp \
  510. flock \
  511. ftime \
  512. get_current_dir_name \
  513. getaddrinfo \
  514. getifaddrs \
  515. getpass \
  516. getrlimit \
  517. gettimeofday \
  518. gmtime_r \
  519. gnu_get_libc_version \
  520. htonll \
  521. inet_aton \
  522. ioctl \
  523. issetugid \
  524. llround \
  525. localtime_r \
  526. lround \
  527. mach_approximate_time \
  528. memmem \
  529. memset_s \
  530. mmap \
  531. pipe \
  532. pipe2 \
  533. prctl \
  534. readpassphrase \
  535. rint \
  536. sigaction \
  537. socketpair \
  538. statvfs \
  539. strlcat \
  540. strlcpy \
  541. strnlen \
  542. strptime \
  543. strtok_r \
  544. strtoull \
  545. sysconf \
  546. sysctl \
  547. truncate \
  548. uname \
  549. usleep \
  550. vasprintf \
  551. _vscprintf
  552. )
  553. # Apple messed up when they added two functions functions in Sierra: they
  554. # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
  555. # checks. So we should only probe for those functions if we are sure that we
  556. # are not targeting OSX 10.11 or earlier.
  557. AC_MSG_CHECKING([for a pre-Sierra OSX build target])
  558. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  559. #ifdef __APPLE__
  560. # include <AvailabilityMacros.h>
  561. # ifndef MAC_OS_X_VERSION_10_12
  562. # define MAC_OS_X_VERSION_10_12 101200
  563. # endif
  564. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  565. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  566. # error "Running on Mac OSX 10.11 or earlier"
  567. # endif
  568. # endif
  569. #endif
  570. ]], [[]])],
  571. [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
  572. [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
  573. if test "$on_macos_pre_10_12" = "no"; then
  574. AC_CHECK_FUNCS(
  575. clock_gettime \
  576. getentropy \
  577. )
  578. fi
  579. if test "$bwin32" != "true"; then
  580. AC_CHECK_HEADERS(pthread.h)
  581. AC_CHECK_FUNCS(pthread_create)
  582. AC_CHECK_FUNCS(pthread_condattr_setclock)
  583. fi
  584. if test "$bwin32" = "true"; then
  585. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  586. #include <windows.h>
  587. #include <conio.h>
  588. #include <wchar.h>
  589. ])
  590. fi
  591. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  592. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  593. AC_MSG_CHECKING([whether free(NULL) works])
  594. AC_RUN_IFELSE([AC_LANG_PROGRAM([
  595. #include <stdlib.h>
  596. ], [
  597. char *p = NULL;
  598. free(p);
  599. ])],
  600. [free_null_ok=true; AC_MSG_RESULT(yes)],
  601. [free_null_ok=false; AC_MSG_RESULT(no)],
  602. [free_null_ok=cross; AC_MSG_RESULT(cross)])
  603. if test "$free_null_ok" = "false"; then
  604. AC_MSG_ERROR([Your libc implementation doesn't allow free(NULL), as required by C99.])
  605. fi
  606. dnl ------------------------------------------------------
  607. dnl Where do you live, libevent? And how do we call you?
  608. if test "$bwin32" = "true"; then
  609. TOR_LIB_WS32=-lws2_32
  610. TOR_LIB_IPHLPAPI=-liphlpapi
  611. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  612. # think it's actually necessary.
  613. TOR_LIB_GDI=-lgdi32
  614. TOR_LIB_USERENV=-luserenv
  615. else
  616. TOR_LIB_WS32=
  617. TOR_LIB_GDI=
  618. TOR_LIB_USERENV=
  619. fi
  620. AC_SUBST(TOR_LIB_WS32)
  621. AC_SUBST(TOR_LIB_GDI)
  622. AC_SUBST(TOR_LIB_IPHLPAPI)
  623. AC_SUBST(TOR_LIB_USERENV)
  624. tor_libevent_pkg_redhat="libevent"
  625. tor_libevent_pkg_debian="libevent-dev"
  626. tor_libevent_devpkg_redhat="libevent-devel"
  627. tor_libevent_devpkg_debian="libevent-dev"
  628. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  629. dnl linking for static builds.
  630. STATIC_LIBEVENT_FLAGS=""
  631. if test "$enable_static_libevent" = "yes"; then
  632. if test "$have_rt" = "yes"; then
  633. STATIC_LIBEVENT_FLAGS=" -lrt "
  634. fi
  635. fi
  636. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  637. #ifdef _WIN32
  638. #include <winsock2.h>
  639. #endif
  640. #include <sys/time.h>
  641. #include <sys/types.h>
  642. #include <event2/event.h>], [
  643. #ifdef _WIN32
  644. #include <winsock2.h>
  645. #endif
  646. struct event_base;
  647. struct event_base *event_base_new(void);
  648. void event_base_free(struct event_base *);],
  649. [
  650. #ifdef _WIN32
  651. {WSADATA d; WSAStartup(0x101,&d); }
  652. #endif
  653. event_base_free(event_base_new());
  654. ], [--with-libevent-dir], [/opt/libevent])
  655. dnl Determine the incantation needed to link libevent.
  656. save_LIBS="$LIBS"
  657. save_LDFLAGS="$LDFLAGS"
  658. save_CPPFLAGS="$CPPFLAGS"
  659. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  660. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  661. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  662. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  663. if test "$enable_static_libevent" = "yes"; then
  664. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  665. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  666. else
  667. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  668. fi
  669. else
  670. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  671. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  672. 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"))
  673. if test "$ac_cv_search_event_new" != "none required"; then
  674. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  675. fi
  676. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  677. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  678. fi
  679. else
  680. AC_MSG_ERROR("libevent2 is required but the headers could not be found")
  681. fi
  682. fi
  683. dnl Now check for particular libevent functions.
  684. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
  685. evutil_secure_rng_add_bytes \
  686. ])
  687. LIBS="$save_LIBS"
  688. LDFLAGS="$save_LDFLAGS"
  689. CPPFLAGS="$save_CPPFLAGS"
  690. dnl Check that libevent is at least at version 2.0.10, the first stable
  691. dnl release of its series
  692. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  693. AC_MSG_CHECKING([whether Libevent is new enough])
  694. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  695. #include <event2/event.h>
  696. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  697. #error
  698. int x = y(zz);
  699. #else
  700. int x = 1;
  701. #endif
  702. ])], [ AC_MSG_RESULT([yes]) ],
  703. [ AC_MSG_RESULT([no])
  704. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  705. LIBS="$save_LIBS"
  706. LDFLAGS="$save_LDFLAGS"
  707. CPPFLAGS="$save_CPPFLAGS"
  708. AC_SUBST(TOR_LIBEVENT_LIBS)
  709. dnl ------------------------------------------------------
  710. dnl Where do you live, libm?
  711. dnl On some platforms (Haiku/BeOS) the math library is
  712. dnl part of libroot. In which case don't link against lm
  713. TOR_LIB_MATH=""
  714. save_LIBS="$LIBS"
  715. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  716. if test "$ac_cv_search_pow" != "none required"; then
  717. TOR_LIB_MATH="$ac_cv_search_pow"
  718. fi
  719. LIBS="$save_LIBS"
  720. AC_SUBST(TOR_LIB_MATH)
  721. dnl ------------------------------------------------------
  722. dnl Where do you live, openssl? And how do we call you?
  723. tor_openssl_pkg_redhat="openssl"
  724. tor_openssl_pkg_debian="libssl-dev"
  725. tor_openssl_devpkg_redhat="openssl-devel"
  726. tor_openssl_devpkg_debian="libssl-dev"
  727. ALT_openssl_WITHVAL=""
  728. AC_ARG_WITH(ssl-dir,
  729. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  730. [
  731. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  732. ALT_openssl_WITHVAL="$withval"
  733. fi
  734. ])
  735. AC_MSG_NOTICE([Now, we'll look for OpenSSL >= 1.0.1])
  736. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI $TOR_LIB_WS32],
  737. [#include <openssl/ssl.h>
  738. char *getenv(const char *);],
  739. [struct ssl_cipher_st;
  740. unsigned SSL_CIPHER_get_id(const struct ssl_cipher_st *);
  741. char *getenv(const char *);],
  742. dnl This funny-looking test program calls getenv, so that the compiler
  743. dnl will neither make code that call SSL_CIPHER_get_id(NULL) [producing
  744. dnl a crash], nor optimize out the call to SSL_CIPHER_get_id().
  745. dnl We look for SSL_cipher_get_id() because it is present in
  746. dnl OpenSSL >=1.0.1, because it is not deprecated, and because Tor
  747. dnl depends on it.
  748. [if (getenv("THIS_SHOULDNT_BE_SET_X201803")) SSL_CIPHER_get_id((void *)0);], [],
  749. [/usr/local/opt/openssl /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /opt/openssl])
  750. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  751. if test "$enable_static_openssl" = "yes"; then
  752. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  753. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  754. else
  755. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  756. fi
  757. else
  758. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  759. fi
  760. AC_SUBST(TOR_OPENSSL_LIBS)
  761. dnl Now check for particular openssl functions.
  762. save_LIBS="$LIBS"
  763. save_LDFLAGS="$LDFLAGS"
  764. save_CPPFLAGS="$CPPFLAGS"
  765. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  766. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  767. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  768. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  769. #include <openssl/opensslv.h>
  770. #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
  771. #error "too old"
  772. #endif
  773. ]], [[]])],
  774. [ : ],
  775. [ 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.]) ])
  776. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  777. #include <openssl/opensslv.h>
  778. #include <openssl/evp.h>
  779. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  780. #error "no ECC"
  781. #endif
  782. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  783. #error "curves unavailable"
  784. #endif
  785. ]], [[]])],
  786. [ : ],
  787. [ 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.]) ])
  788. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  789. [#include <openssl/ssl.h>
  790. ])
  791. AC_CHECK_FUNCS([ \
  792. SSL_SESSION_get_master_key \
  793. SSL_get_server_random \
  794. SSL_get_client_ciphers \
  795. SSL_get_client_random \
  796. SSL_CIPHER_find \
  797. TLS_method
  798. ])
  799. dnl Check if OpenSSL has scrypt implementation.
  800. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  801. dnl Check if OpenSSL structures are opaque
  802. AC_CHECK_MEMBERS([SSL.state], , ,
  803. [#include <openssl/ssl.h>
  804. ])
  805. AC_CHECK_SIZEOF(SHA_CTX, , [AC_INCLUDES_DEFAULT()
  806. #include <openssl/sha.h>
  807. ])
  808. dnl Define the set of checks for KIST scheduler support.
  809. AC_DEFUN([CHECK_KIST_SUPPORT],[
  810. dnl KIST needs struct tcp_info and for certain members to exist.
  811. AC_CHECK_MEMBERS(
  812. [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss],
  813. , ,[[#include <netinet/tcp.h>]])
  814. dnl KIST needs SIOCOUTQNSD to exist for an ioctl call.
  815. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  816. #include <linux/sockios.h>
  817. #ifndef SIOCOUTQNSD
  818. #error
  819. #endif
  820. ])], have_siocoutqnsd=yes, have_siocoutqnsd=no)
  821. if test "x$have_siocoutqnsd" = "xyes"; then
  822. if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then
  823. if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then
  824. have_kist_support=yes
  825. fi
  826. fi
  827. fi
  828. ])
  829. dnl Now, trigger the check.
  830. CHECK_KIST_SUPPORT
  831. AS_IF([test "x$have_kist_support" = "xyes"],
  832. [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported
  833. on this system])],
  834. [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])])
  835. LIBS="$save_LIBS"
  836. LDFLAGS="$save_LDFLAGS"
  837. CPPFLAGS="$save_CPPFLAGS"
  838. dnl ------------------------------------------------------
  839. dnl Where do you live, zlib? And how do we call you?
  840. tor_zlib_pkg_redhat="zlib"
  841. tor_zlib_pkg_debian="zlib1g"
  842. tor_zlib_devpkg_redhat="zlib-devel"
  843. tor_zlib_devpkg_debian="zlib1g-dev"
  844. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  845. [#include <zlib.h>],
  846. [const char * zlibVersion(void);],
  847. [zlibVersion();], [--with-zlib-dir],
  848. [/opt/zlib])
  849. if test "$enable_static_zlib" = "yes"; then
  850. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  851. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  852. using --enable-static-zlib")
  853. else
  854. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  855. fi
  856. else
  857. TOR_ZLIB_LIBS="-lz"
  858. fi
  859. AC_SUBST(TOR_ZLIB_LIBS)
  860. dnl ------------------------------------------------------
  861. dnl Where we do we find lzma?
  862. AC_ARG_ENABLE(lzma,
  863. AS_HELP_STRING(--enable-lzma, [enable support for the LZMA compression scheme.]),
  864. [case "${enableval}" in
  865. "yes") lzma=true ;;
  866. "no") lzma=false ;;
  867. * ) AC_MSG_ERROR(bad value for --enable-lzma) ;;
  868. esac], [lzma=auto])
  869. if test "x$enable_lzma" = "xno"; then
  870. have_lzma=no;
  871. else
  872. PKG_CHECK_MODULES([LZMA],
  873. [liblzma],
  874. have_lzma=yes,
  875. have_lzma=no)
  876. if test "x$have_lzma" = "xno" ; then
  877. AC_MSG_WARN([Unable to find liblzma.])
  878. fi
  879. fi
  880. if test "x$have_lzma" = "xyes"; then
  881. AC_DEFINE(HAVE_LZMA,1,[Have LZMA])
  882. TOR_LZMA_CFLAGS="${LZMA_CFLAGS}"
  883. TOR_LZMA_LIBS="${LZMA_LIBS}"
  884. fi
  885. AC_SUBST(TOR_LZMA_CFLAGS)
  886. AC_SUBST(TOR_LZMA_LIBS)
  887. dnl ------------------------------------------------------
  888. dnl Where we do we find zstd?
  889. AC_ARG_ENABLE(zstd,
  890. AS_HELP_STRING(--enable-zstd, [enable support for the Zstandard compression scheme.]),
  891. [case "${enableval}" in
  892. "yes") zstd=true ;;
  893. "no") zstd=false ;;
  894. * ) AC_MSG_ERROR(bad value for --enable-zstd) ;;
  895. esac], [zstd=auto])
  896. if test "x$enable_zstd" = "xno"; then
  897. have_zstd=no;
  898. else
  899. PKG_CHECK_MODULES([ZSTD],
  900. [libzstd >= 1.1],
  901. have_zstd=yes,
  902. have_zstd=no)
  903. if test "x$have_zstd" = "xno" ; then
  904. AC_MSG_WARN([Unable to find libzstd.])
  905. fi
  906. fi
  907. if test "x$have_zstd" = "xyes"; then
  908. AC_DEFINE(HAVE_ZSTD,1,[Have Zstd])
  909. TOR_ZSTD_CFLAGS="${ZSTD_CFLAGS}"
  910. TOR_ZSTD_LIBS="${ZSTD_LIBS}"
  911. dnl now check for zstd functions
  912. save_LIBS="$LIBS"
  913. save_CFLAGS="$CFLAGS"
  914. LIBS="$LIBS $ZSTD_LIBS"
  915. CFLAGS="$CFLAGS $ZSTD_CFLAGS"
  916. AC_CHECK_FUNCS(ZSTD_estimateCStreamSize \
  917. ZSTD_estimateDCtxSize)
  918. LIBS="$save_LIBS"
  919. CFLAGS="$save_CFLAGS"
  920. fi
  921. AC_SUBST(TOR_ZSTD_CFLAGS)
  922. AC_SUBST(TOR_ZSTD_LIBS)
  923. dnl ----------------------------------------------------------------------
  924. dnl Check if libcap is available for capabilities.
  925. tor_cap_pkg_debian="libcap2"
  926. tor_cap_pkg_redhat="libcap"
  927. tor_cap_devpkg_debian="libcap-dev"
  928. tor_cap_devpkg_redhat="libcap-devel"
  929. AC_CHECK_LIB([cap], [cap_init], [],
  930. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  931. )
  932. AC_CHECK_FUNCS(cap_set_proc)
  933. dnl ---------------------------------------------------------------------
  934. dnl Now that we know about our major libraries, we can check for compiler
  935. dnl and linker hardening options. We need to do this with the libraries known,
  936. dnl since sometimes the linker will like an option but not be willing to
  937. dnl use it with a build of a library.
  938. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  939. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_LIB_USERENV $TOR_CAP_LIBS"
  940. CFLAGS_FTRAPV=
  941. CFLAGS_FWRAPV=
  942. CFLAGS_ASAN=
  943. CFLAGS_UBSAN=
  944. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  945. #if !defined(__clang__)
  946. #error
  947. #endif])], have_clang=yes, have_clang=no)
  948. if test "x$enable_gcc_hardening" != "xno"; then
  949. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  950. if test "x$have_clang" = "xyes"; then
  951. TOR_CHECK_CFLAGS(-Qunused-arguments)
  952. fi
  953. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  954. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  955. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  956. m4_ifdef([AS_VAR_IF],[
  957. AS_VAR_IF(can_compile, [yes],
  958. AS_VAR_IF(can_link, [yes],
  959. [],
  960. 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.)]))
  961. )])
  962. AS_VAR_POPDEF([can_link])
  963. AS_VAR_POPDEF([can_compile])
  964. TOR_CHECK_CFLAGS(-Wstack-protector)
  965. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  966. if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
  967. TOR_CHECK_CFLAGS(-fPIE)
  968. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  969. fi
  970. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  971. fi
  972. if test "$fragile_hardening" = "yes"; then
  973. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  974. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  975. 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.])
  976. fi
  977. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  978. AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
  979. fi
  980. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  981. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  982. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.*, and with Clang you need libclang_rt.ubsan*])
  983. fi
  984. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  985. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  986. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
  987. fi
  988. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  989. fi
  990. dnl Find the correct libraries to add in order to use the sanitizers.
  991. dnl
  992. dnl When building Rust, Cargo will run the linker with the -nodefaultlibs
  993. dnl option, which will prevent the compiler from linking the sanitizer
  994. dnl libraries it needs. We need to specify them manually.
  995. dnl
  996. dnl What's more, we need to specify them in a linker script rather than
  997. dnl from build.rs: these options aren't allowed in the cargo:rustc-flags
  998. dnl variable.
  999. RUST_LINKER_OPTIONS=""
  1000. if test "x$have_clang" = "xyes"; then
  1001. if test "x$CFLAGS_ASAN" != "x"; then
  1002. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_ASAN"
  1003. fi
  1004. if test "x$CFLAGS_UBSAN" != "x"; then
  1005. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_UBSAN"
  1006. fi
  1007. else
  1008. if test "x$CFLAGS_ASAN" != "x"; then
  1009. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lasan"
  1010. fi
  1011. if test "x$CFLAGS_UBSAN" != "x"; then
  1012. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lubsan"
  1013. fi
  1014. fi
  1015. AC_SUBST(RUST_LINKER_OPTIONS)
  1016. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  1017. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  1018. mulodi_fixes_ftrapv=no
  1019. if test "$have_clang" = "yes"; then
  1020. saved_CFLAGS="$CFLAGS"
  1021. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  1022. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  1023. AC_LINK_IFELSE([
  1024. AC_LANG_SOURCE([[
  1025. #include <stdint.h>
  1026. #include <stdlib.h>
  1027. int main(int argc, char **argv)
  1028. {
  1029. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1030. * (int64_t)atoi(argv[3]);
  1031. return x == 9;
  1032. } ]])],
  1033. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  1034. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  1035. if test "$ftrapv_can_link" = "no"; then
  1036. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  1037. AC_LINK_IFELSE([
  1038. AC_LANG_SOURCE([[
  1039. #include <stdint.h>
  1040. #include <stdlib.h>
  1041. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  1042. *overflow=0;
  1043. return a;
  1044. }
  1045. int main(int argc, char **argv)
  1046. {
  1047. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1048. * (int64_t)atoi(argv[3]);
  1049. return x == 9;
  1050. } ]])],
  1051. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  1052. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  1053. fi
  1054. CFLAGS="$saved_CFLAGS"
  1055. fi
  1056. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  1057. dnl These cflags add bunches of branches, and we haven't been able to
  1058. dnl persuade ourselves that they're suitable for code that needs to be
  1059. dnl constant time.
  1060. AC_SUBST(CFLAGS_BUGTRAP)
  1061. dnl These cflags are variant ones sutable for code that needs to be
  1062. dnl constant-time.
  1063. AC_SUBST(CFLAGS_CONSTTIME)
  1064. if test "x$enable_linker_hardening" != "xno"; then
  1065. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  1066. fi
  1067. # For backtrace support
  1068. TOR_CHECK_LDFLAGS(-rdynamic)
  1069. dnl ------------------------------------------------------
  1070. dnl Now see if we have a -fomit-frame-pointer compiler option.
  1071. saved_CFLAGS="$CFLAGS"
  1072. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  1073. F_OMIT_FRAME_POINTER=''
  1074. if test "$saved_CFLAGS" != "$CFLAGS"; then
  1075. if test "$fragile_hardening" = "yes"; then
  1076. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  1077. fi
  1078. fi
  1079. CFLAGS="$saved_CFLAGS"
  1080. AC_SUBST(F_OMIT_FRAME_POINTER)
  1081. dnl ------------------------------------------------------
  1082. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  1083. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  1084. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  1085. dnl code will work.
  1086. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  1087. dnl ============================================================
  1088. dnl Check for libseccomp
  1089. if test "x$enable_seccomp" != "xno"; then
  1090. AC_CHECK_HEADERS([seccomp.h])
  1091. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  1092. fi
  1093. dnl ============================================================
  1094. dnl Check for libscrypt
  1095. if test "x$enable_libscrypt" != "xno"; then
  1096. AC_CHECK_HEADERS([libscrypt.h])
  1097. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  1098. AC_CHECK_FUNCS([libscrypt_scrypt])
  1099. fi
  1100. dnl ============================================================
  1101. dnl We need an implementation of curve25519.
  1102. dnl set these defaults.
  1103. build_curve25519_donna=no
  1104. build_curve25519_donna_c64=no
  1105. use_curve25519_donna=no
  1106. use_curve25519_nacl=no
  1107. CURVE25519_LIBS=
  1108. dnl The best choice is using curve25519-donna-c64, but that requires
  1109. dnl that we
  1110. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  1111. tor_cv_can_use_curve25519_donna_c64,
  1112. [AC_RUN_IFELSE(
  1113. [AC_LANG_PROGRAM([dnl
  1114. #include <stdint.h>
  1115. typedef unsigned uint128_t __attribute__((mode(TI)));
  1116. int func(uint64_t a, uint64_t b) {
  1117. uint128_t c = ((uint128_t)a) * b;
  1118. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1119. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1120. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1121. (((uint64_t)(c))&0xffffffffL) == 0;
  1122. return ok;
  1123. }
  1124. ], [dnl
  1125. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1126. ((uint64_t)1234567890) << 24);
  1127. return !ok;
  1128. ])],
  1129. [tor_cv_can_use_curve25519_donna_c64=yes],
  1130. [tor_cv_can_use_curve25519_donna_c64=no],
  1131. [AC_LINK_IFELSE(
  1132. [AC_LANG_PROGRAM([dnl
  1133. #include <stdint.h>
  1134. typedef unsigned uint128_t __attribute__((mode(TI)));
  1135. int func(uint64_t a, uint64_t b) {
  1136. uint128_t c = ((uint128_t)a) * b;
  1137. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1138. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1139. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1140. (((uint64_t)(c))&0xffffffffL) == 0;
  1141. return ok;
  1142. }
  1143. ], [dnl
  1144. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1145. ((uint64_t)1234567890) << 24);
  1146. return !ok;
  1147. ])],
  1148. [tor_cv_can_use_curve25519_donna_c64=cross],
  1149. [tor_cv_can_use_curve25519_donna_c64=no])])])
  1150. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  1151. nacl/crypto_scalarmult_curve25519.h])
  1152. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  1153. tor_cv_can_use_curve25519_nacl,
  1154. [tor_saved_LIBS="$LIBS"
  1155. LIBS="$LIBS -lnacl"
  1156. AC_LINK_IFELSE(
  1157. [AC_LANG_PROGRAM([dnl
  1158. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  1159. #include <crypto_scalarmult_curve25519.h>
  1160. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  1161. #include <nacl/crypto_scalarmult_curve25519.h>
  1162. #endif
  1163. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  1164. #error Hey, this is the reference implementation! That's not fast.
  1165. #endif
  1166. ], [
  1167. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  1168. ])], [tor_cv_can_use_curve25519_nacl=yes],
  1169. [tor_cv_can_use_curve25519_nacl=no])
  1170. LIBS="$tor_saved_LIBS" ])
  1171. dnl Okay, now we need to figure out which one to actually use. Fall back
  1172. dnl to curve25519-donna.c
  1173. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  1174. build_curve25519_donna_c64=yes
  1175. use_curve25519_donna=yes
  1176. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  1177. use_curve25519_nacl=yes
  1178. CURVE25519_LIBS=-lnacl
  1179. else
  1180. build_curve25519_donna=yes
  1181. use_curve25519_donna=yes
  1182. fi
  1183. if test "x$use_curve25519_donna" = "xyes"; then
  1184. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  1185. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  1186. fi
  1187. if test "x$use_curve25519_nacl" = "xyes"; then
  1188. AC_DEFINE(USE_CURVE25519_NACL, 1,
  1189. [Defined if we should use a curve25519 from nacl])
  1190. fi
  1191. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  1192. test "x$build_curve25519_donna" = "xyes")
  1193. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  1194. test "x$build_curve25519_donna_c64" = "xyes")
  1195. AC_SUBST(CURVE25519_LIBS)
  1196. dnl Make sure to enable support for large off_t if available.
  1197. AC_SYS_LARGEFILE
  1198. AC_CHECK_HEADERS([assert.h \
  1199. errno.h \
  1200. fcntl.h \
  1201. signal.h \
  1202. string.h \
  1203. sys/capability.h \
  1204. sys/fcntl.h \
  1205. sys/stat.h \
  1206. sys/time.h \
  1207. sys/types.h \
  1208. time.h \
  1209. unistd.h \
  1210. arpa/inet.h \
  1211. crt_externs.h \
  1212. execinfo.h \
  1213. gnu/libc-version.h \
  1214. grp.h \
  1215. ifaddrs.h \
  1216. inttypes.h \
  1217. limits.h \
  1218. linux/types.h \
  1219. machine/limits.h \
  1220. malloc.h \
  1221. malloc/malloc.h \
  1222. malloc_np.h \
  1223. netdb.h \
  1224. netinet/in.h \
  1225. netinet/in6.h \
  1226. pwd.h \
  1227. readpassphrase.h \
  1228. stdint.h \
  1229. stdatomic.h \
  1230. sys/eventfd.h \
  1231. sys/file.h \
  1232. sys/ioctl.h \
  1233. sys/limits.h \
  1234. sys/mman.h \
  1235. sys/param.h \
  1236. sys/prctl.h \
  1237. sys/random.h \
  1238. sys/resource.h \
  1239. sys/select.h \
  1240. sys/socket.h \
  1241. sys/statvfs.h \
  1242. sys/syscall.h \
  1243. sys/sysctl.h \
  1244. sys/syslimits.h \
  1245. sys/time.h \
  1246. sys/types.h \
  1247. sys/un.h \
  1248. sys/utime.h \
  1249. sys/wait.h \
  1250. syslog.h \
  1251. utime.h])
  1252. AC_CHECK_HEADERS(sys/param.h)
  1253. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  1254. [#ifdef HAVE_SYS_TYPES_H
  1255. #include <sys/types.h>
  1256. #endif
  1257. #ifdef HAVE_SYS_SOCKET_H
  1258. #include <sys/socket.h>
  1259. #endif])
  1260. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  1261. [#ifdef HAVE_SYS_TYPES_H
  1262. #include <sys/types.h>
  1263. #endif
  1264. #ifdef HAVE_SYS_SOCKET_H
  1265. #include <sys/socket.h>
  1266. #endif
  1267. #ifdef HAVE_NET_IF_H
  1268. #include <net/if.h>
  1269. #endif
  1270. #ifdef HAVE_NETINET_IN_H
  1271. #include <netinet/in.h>
  1272. #endif])
  1273. AC_CHECK_HEADERS(linux/if.h,[],[],
  1274. [
  1275. #ifdef HAVE_SYS_SOCKET_H
  1276. #include <sys/socket.h>
  1277. #endif
  1278. ])
  1279. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  1280. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  1281. [#ifdef HAVE_SYS_TYPES_H
  1282. #include <sys/types.h>
  1283. #endif
  1284. #ifdef HAVE_SYS_SOCKET_H
  1285. #include <sys/socket.h>
  1286. #endif
  1287. #ifdef HAVE_LIMITS_H
  1288. #include <limits.h>
  1289. #endif
  1290. #ifdef HAVE_LINUX_TYPES_H
  1291. #include <linux/types.h>
  1292. #endif
  1293. #ifdef HAVE_NETINET_IN6_H
  1294. #include <netinet/in6.h>
  1295. #endif
  1296. #ifdef HAVE_NETINET_IN_H
  1297. #include <netinet/in.h>
  1298. #endif])
  1299. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  1300. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  1301. [#ifdef HAVE_SYS_TYPES_H
  1302. #include <sys/types.h>
  1303. #endif
  1304. #ifdef HAVE_SYS_SOCKET_H
  1305. #include <sys/socket.h>
  1306. #endif
  1307. #ifdef HAVE_LIMITS_H
  1308. #include <limits.h>
  1309. #endif
  1310. #ifdef HAVE_LINUX_TYPES_H
  1311. #include <linux/types.h>
  1312. #endif
  1313. #ifdef HAVE_NETINET_IN6_H
  1314. #include <netinet/in6.h>
  1315. #endif
  1316. #ifdef HAVE_NETINET_IN_H
  1317. #include <netinet/in.h>
  1318. #endif
  1319. #ifdef HAVE_LINUX_IF_H
  1320. #include <linux/if.h>
  1321. #endif])
  1322. transparent_ok=0
  1323. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  1324. transparent_ok=1
  1325. fi
  1326. if test "x$linux_netfilter_ipv4" = "x1"; then
  1327. transparent_ok=1
  1328. fi
  1329. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  1330. transparent_ok=1
  1331. fi
  1332. if test "x$transparent_ok" = "x1"; then
  1333. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  1334. else
  1335. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  1336. fi
  1337. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1338. [#ifdef HAVE_SYS_TYPES_H
  1339. #include <sys/types.h>
  1340. #endif
  1341. #ifdef HAVE_SYS_TIME_H
  1342. #include <sys/time.h>
  1343. #endif])
  1344. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  1345. dnl Watch out.
  1346. AC_CHECK_SIZEOF(int8_t)
  1347. AC_CHECK_SIZEOF(int16_t)
  1348. AC_CHECK_SIZEOF(int32_t)
  1349. AC_CHECK_SIZEOF(int64_t)
  1350. AC_CHECK_SIZEOF(uint8_t)
  1351. AC_CHECK_SIZEOF(uint16_t)
  1352. AC_CHECK_SIZEOF(uint32_t)
  1353. AC_CHECK_SIZEOF(uint64_t)
  1354. AC_CHECK_SIZEOF(intptr_t)
  1355. AC_CHECK_SIZEOF(uintptr_t)
  1356. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  1357. AC_CHECK_SIZEOF(char)
  1358. AC_CHECK_SIZEOF(short)
  1359. AC_CHECK_SIZEOF(int)
  1360. AC_CHECK_SIZEOF(long)
  1361. AC_CHECK_SIZEOF(long long)
  1362. AC_CHECK_SIZEOF(__int64)
  1363. AC_CHECK_SIZEOF(void *)
  1364. AC_CHECK_SIZEOF(time_t)
  1365. AC_CHECK_SIZEOF(size_t)
  1366. AC_CHECK_SIZEOF(pid_t)
  1367. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1368. AC_PC_FROM_UCONTEXT([:])
  1369. dnl used to include sockaddr_storage, but everybody has that.
  1370. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1371. [#ifdef HAVE_SYS_TYPES_H
  1372. #include <sys/types.h>
  1373. #endif
  1374. #ifdef HAVE_NETINET_IN_H
  1375. #include <netinet/in.h>
  1376. #endif
  1377. #ifdef HAVE_NETINET_IN6_H
  1378. #include <netinet/in6.h>
  1379. #endif
  1380. #ifdef HAVE_SYS_SOCKET_H
  1381. #include <sys/socket.h>
  1382. #endif
  1383. #ifdef _WIN32
  1384. #define _WIN32_WINNT 0x0501
  1385. #define WIN32_LEAN_AND_MEAN
  1386. #include <winsock2.h>
  1387. #include <ws2tcpip.h>
  1388. #endif
  1389. ])
  1390. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1391. [#ifdef HAVE_SYS_TYPES_H
  1392. #include <sys/types.h>
  1393. #endif
  1394. #ifdef HAVE_NETINET_IN_H
  1395. #include <netinet/in.h>
  1396. #endif
  1397. #ifdef HAVE_NETINET_IN6_H
  1398. #include <netinet/in6.h>
  1399. #endif
  1400. #ifdef HAVE_SYS_SOCKET_H
  1401. #include <sys/socket.h>
  1402. #endif
  1403. #ifdef _WIN32
  1404. #define _WIN32_WINNT 0x0501
  1405. #define WIN32_LEAN_AND_MEAN
  1406. #include <winsock2.h>
  1407. #include <ws2tcpip.h>
  1408. #endif
  1409. ])
  1410. AC_CHECK_TYPES([rlim_t], , ,
  1411. [#ifdef HAVE_SYS_TYPES_H
  1412. #include <sys/types.h>
  1413. #endif
  1414. #ifdef HAVE_SYS_TIME_H
  1415. #include <sys/time.h>
  1416. #endif
  1417. #ifdef HAVE_SYS_RESOURCE_H
  1418. #include <sys/resource.h>
  1419. #endif
  1420. ])
  1421. AX_CHECK_SIGN([time_t],
  1422. [ : ],
  1423. [ : ], [
  1424. #ifdef HAVE_SYS_TYPES_H
  1425. #include <sys/types.h>
  1426. #endif
  1427. #ifdef HAVE_SYS_TIME_H
  1428. #include <sys/time.h>
  1429. #endif
  1430. #ifdef HAVE_TIME_H
  1431. #include <time.h>
  1432. #endif
  1433. ])
  1434. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1435. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1436. fi
  1437. AX_CHECK_SIGN([size_t],
  1438. [ tor_cv_size_t_signed=yes ],
  1439. [ tor_cv_size_t_signed=no ], [
  1440. #ifdef HAVE_SYS_TYPES_H
  1441. #include <sys/types.h>
  1442. #endif
  1443. ])
  1444. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1445. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1446. fi
  1447. AX_CHECK_SIGN([enum always],
  1448. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1449. [ : ], [
  1450. enum always { AAA, BBB, CCC };
  1451. ])
  1452. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1453. #ifdef HAVE_SYS_SOCKET_H
  1454. #include <sys/socket.h>
  1455. #endif
  1456. ])
  1457. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1458. AC_CHECK_SIZEOF(cell_t)
  1459. # Now make sure that NULL can be represented as zero bytes.
  1460. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1461. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1462. [[#include <stdlib.h>
  1463. #include <string.h>
  1464. #include <stdio.h>
  1465. #ifdef HAVE_STDDEF_H
  1466. #include <stddef.h>
  1467. #endif
  1468. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1469. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1470. [tor_cv_null_is_zero=yes],
  1471. [tor_cv_null_is_zero=no],
  1472. [tor_cv_null_is_zero=cross])])
  1473. if test "$tor_cv_null_is_zero" = "cross"; then
  1474. # Cross-compiling; let's hope that the target isn't raving mad.
  1475. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1476. fi
  1477. if test "$tor_cv_null_is_zero" != "no"; then
  1478. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1479. [Define to 1 iff memset(0) sets pointers to NULL])
  1480. fi
  1481. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1482. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1483. [[#include <stdlib.h>
  1484. #include <string.h>
  1485. #include <stdio.h>
  1486. #ifdef HAVE_STDDEF_H
  1487. #include <stddef.h>
  1488. #endif
  1489. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1490. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1491. [tor_cv_dbl0_is_zero=yes],
  1492. [tor_cv_dbl0_is_zero=no],
  1493. [tor_cv_dbl0_is_zero=cross])])
  1494. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1495. # Cross-compiling; let's hope that the target isn't raving mad.
  1496. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1497. fi
  1498. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1499. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1500. [Define to 1 iff memset(0) sets doubles to 0.0])
  1501. fi
  1502. # And what happens when we malloc zero?
  1503. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1504. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1505. [[#include <stdlib.h>
  1506. #include <string.h>
  1507. #include <stdio.h>
  1508. #ifdef HAVE_STDDEF_H
  1509. #include <stddef.h>
  1510. #endif
  1511. int main () { return malloc(0)?0:1; }]])],
  1512. [tor_cv_malloc_zero_works=yes],
  1513. [tor_cv_malloc_zero_works=no],
  1514. [tor_cv_malloc_zero_works=cross])])
  1515. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1516. # Cross-compiling; let's hope that the target isn't raving mad.
  1517. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1518. fi
  1519. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1520. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1521. [Define to 1 iff malloc(0) returns a pointer])
  1522. fi
  1523. # whether we seem to be in a 2s-complement world.
  1524. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1525. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1526. [[int main () { int problem = ((-99) != (~99)+1);
  1527. return problem ? 1 : 0; }]])],
  1528. [tor_cv_twos_complement=yes],
  1529. [tor_cv_twos_complement=no],
  1530. [tor_cv_twos_complement=cross])])
  1531. if test "$tor_cv_twos_complement" = "cross"; then
  1532. # Cross-compiling; let's hope that the target isn't raving mad.
  1533. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1534. fi
  1535. if test "$tor_cv_twos_complement" != "no"; then
  1536. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1537. [Define to 1 iff we represent negative integers with
  1538. two's complement])
  1539. fi
  1540. # What does shifting a negative value do?
  1541. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1542. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1543. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1544. [tor_cv_sign_extend=yes],
  1545. [tor_cv_sign_extend=no],
  1546. [tor_cv_sign_extend=cross])])
  1547. if test "$tor_cv_sign_extend" = "cross"; then
  1548. # Cross-compiling; let's hope that the target isn't raving mad.
  1549. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1550. fi
  1551. if test "$tor_cv_sign_extend" != "no"; then
  1552. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1553. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1554. fi
  1555. # Is uint8_t the same type as unsigned char?
  1556. AC_CACHE_CHECK([whether uint8_t is the same type as unsigned char], tor_cv_uint8_uchar,
  1557. [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1558. #include <stdint.h>
  1559. extern uint8_t c;
  1560. unsigned char c;]])],
  1561. [tor_cv_uint8_uchar=yes],
  1562. [tor_cv_uint8_uchar=no],
  1563. [tor_cv_uint8_uchar=cross])])
  1564. if test "$tor_cv_uint8_uchar" = "cross"; then
  1565. AC_MSG_NOTICE([Cross-compiling: we'll assume that uint8_t is the same type as unsigned char])
  1566. fi
  1567. if test "$tor_cv_uint8_uchar" = "no"; then
  1568. AC_MSG_ERROR([We assume that uint8_t is the same type as unsigned char, but your compiler disagrees.])
  1569. fi
  1570. # Whether we should use the dmalloc memory allocation debugging library.
  1571. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1572. AC_ARG_WITH(dmalloc,
  1573. AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
  1574. [if [[ "$withval" = "yes" ]]; then
  1575. dmalloc=1
  1576. AC_MSG_RESULT(yes)
  1577. else
  1578. dmalloc=1
  1579. AC_MSG_RESULT(no)
  1580. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1581. )
  1582. if [[ $dmalloc -eq 1 ]]; then
  1583. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1584. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1585. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1586. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1587. fi
  1588. AC_ARG_WITH(tcmalloc,
  1589. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
  1590. [ tcmalloc=yes ], [ tcmalloc=no ])
  1591. if test "x$tcmalloc" = "xyes"; then
  1592. LDFLAGS="-ltcmalloc $LDFLAGS"
  1593. fi
  1594. using_custom_malloc=no
  1595. if test "x$enable_openbsd_malloc" = "xyes"; then
  1596. using_custom_malloc=yes
  1597. fi
  1598. if test "x$tcmalloc" = "xyes"; then
  1599. using_custom_malloc=yes
  1600. fi
  1601. if test "$using_custom_malloc" = "no"; then
  1602. AC_CHECK_FUNCS(mallinfo)
  1603. fi
  1604. # By default, we're going to assume we don't have mlockall()
  1605. # bionic and other platforms have various broken mlockall subsystems.
  1606. # Some systems don't have a working mlockall, some aren't linkable,
  1607. # and some have it but don't declare it.
  1608. AC_CHECK_FUNCS(mlockall)
  1609. AC_CHECK_DECLS([mlockall], , , [
  1610. #ifdef HAVE_SYS_MMAN_H
  1611. #include <sys/mman.h>
  1612. #endif])
  1613. # Allow user to specify an alternate syslog facility
  1614. AC_ARG_WITH(syslog-facility,
  1615. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1616. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1617. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1618. AC_SUBST(LOGFACILITY)
  1619. # Check if we have getresuid and getresgid
  1620. AC_CHECK_FUNCS(getresuid getresgid)
  1621. # Check for gethostbyname_r in all its glorious incompatible versions.
  1622. # (This logic is based on that in Python's configure.in)
  1623. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1624. [Define this if you have any gethostbyname_r()])
  1625. AC_CHECK_FUNC(gethostbyname_r, [
  1626. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1627. OLD_CFLAGS=$CFLAGS
  1628. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1629. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1630. #include <netdb.h>
  1631. ]], [[
  1632. char *cp1, *cp2;
  1633. struct hostent *h1, *h2;
  1634. int i1, i2;
  1635. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1636. ]])],[
  1637. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1638. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1639. [Define this if gethostbyname_r takes 6 arguments])
  1640. AC_MSG_RESULT(6)
  1641. ], [
  1642. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1643. #include <netdb.h>
  1644. ]], [[
  1645. char *cp1, *cp2;
  1646. struct hostent *h1;
  1647. int i1, i2;
  1648. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1649. ]])], [
  1650. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1651. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1652. [Define this if gethostbyname_r takes 5 arguments])
  1653. AC_MSG_RESULT(5)
  1654. ], [
  1655. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1656. #include <netdb.h>
  1657. ]], [[
  1658. char *cp1;
  1659. struct hostent *h1;
  1660. struct hostent_data hd;
  1661. (void) gethostbyname_r(cp1,h1,&hd);
  1662. ]])], [
  1663. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1664. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1665. [Define this if gethostbyname_r takes 3 arguments])
  1666. AC_MSG_RESULT(3)
  1667. ], [
  1668. AC_MSG_RESULT(0)
  1669. ])
  1670. ])
  1671. ])
  1672. CFLAGS=$OLD_CFLAGS
  1673. ])
  1674. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1675. tor_cv_have_func_macro,
  1676. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1677. #include <stdio.h>
  1678. int main(int c, char **v) { puts(__func__); }])],
  1679. tor_cv_have_func_macro=yes,
  1680. tor_cv_have_func_macro=no))
  1681. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1682. tor_cv_have_FUNC_macro,
  1683. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1684. #include <stdio.h>
  1685. int main(int c, char **v) { puts(__FUNC__); }])],
  1686. tor_cv_have_FUNC_macro=yes,
  1687. tor_cv_have_FUNC_macro=no))
  1688. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1689. tor_cv_have_FUNCTION_macro,
  1690. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1691. #include <stdio.h>
  1692. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1693. tor_cv_have_FUNCTION_macro=yes,
  1694. tor_cv_have_FUNCTION_macro=no))
  1695. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1696. tor_cv_have_environ_declared,
  1697. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1698. #ifdef HAVE_UNISTD_H
  1699. #include <unistd.h>
  1700. #endif
  1701. #include <stdlib.h>
  1702. int main(int c, char **v) { char **t = environ; }])],
  1703. tor_cv_have_environ_declared=yes,
  1704. tor_cv_have_environ_declared=no))
  1705. if test "$tor_cv_have_func_macro" = "yes"; then
  1706. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1707. fi
  1708. if test "$tor_cv_have_FUNC_macro" = "yes"; then
  1709. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1710. fi
  1711. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1712. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1713. [Defined if the compiler supports __FUNCTION__])
  1714. fi
  1715. if test "$tor_cv_have_environ_declared" = "yes"; then
  1716. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1717. [Defined if we have extern char **environ already declared])
  1718. fi
  1719. # $prefix stores the value of the --prefix command line option, or
  1720. # NONE if the option wasn't set. In the case that it wasn't set, make
  1721. # it be the default, so that we can use it to expand directories now.
  1722. if test "x$prefix" = "xNONE"; then
  1723. prefix=$ac_default_prefix
  1724. fi
  1725. # and similarly for $exec_prefix
  1726. if test "x$exec_prefix" = "xNONE"; then
  1727. exec_prefix=$prefix
  1728. fi
  1729. if test "x$BUILDDIR" = "x"; then
  1730. BUILDDIR=`pwd`
  1731. fi
  1732. AC_SUBST(BUILDDIR)
  1733. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1734. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1735. if test "x$SRCDIR" = "x"; then
  1736. SRCDIR=$(cd "$srcdir"; pwd)
  1737. fi
  1738. AH_TEMPLATE([SRCDIR],[tor's sourcedir directory])
  1739. AC_DEFINE_UNQUOTED(SRCDIR,"$SRCDIR")
  1740. if test "x$CONFDIR" = "x"; then
  1741. CONFDIR=`eval echo $sysconfdir/tor`
  1742. fi
  1743. AC_SUBST(CONFDIR)
  1744. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1745. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1746. BINDIR=`eval echo $bindir`
  1747. AC_SUBST(BINDIR)
  1748. LOCALSTATEDIR=`eval echo $localstatedir`
  1749. AC_SUBST(LOCALSTATEDIR)
  1750. if test "$bwin32" = "true"; then
  1751. # Test if the linker supports the --nxcompat and --dynamicbase options
  1752. # for Windows
  1753. save_LDFLAGS="$LDFLAGS"
  1754. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1755. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1756. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1757. [AC_MSG_RESULT([yes])]
  1758. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1759. [AC_MSG_RESULT([no])]
  1760. )
  1761. LDFLAGS="$save_LDFLAGS"
  1762. fi
  1763. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1764. # than autoconf's macros like.
  1765. if test "$GCC" = "yes"; then
  1766. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1767. # accident waiting to happen.
  1768. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1769. else
  1770. # Override optimization level for non-gcc compilers
  1771. CFLAGS="$CFLAGS -O"
  1772. enable_gcc_warnings=no
  1773. enable_gcc_warnings_advisory=no
  1774. fi
  1775. # Warnings implies advisory-warnings and -Werror.
  1776. if test "$enable_gcc_warnings" = "yes"; then
  1777. enable_gcc_warnings_advisory=yes
  1778. enable_fatal_warnings=yes
  1779. fi
  1780. # OS X Lion started deprecating the system openssl. Let's just disable
  1781. # all deprecation warnings on OS X. Also, to potentially make the binary
  1782. # a little smaller, let's enable dead_strip.
  1783. case "$host_os" in
  1784. darwin*)
  1785. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1786. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1787. esac
  1788. # Add some more warnings which we use in development but not in the
  1789. # released versions. (Some relevant gcc versions can't handle these.)
  1790. #
  1791. # Note that we have to do this near the end of the autoconf process, or
  1792. # else we may run into problems when these warnings hit on the testing C
  1793. # programs that autoconf wants to build.
  1794. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1795. case "$host" in
  1796. *-*-openbsd* | *-*-bitrig*)
  1797. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1798. # That's fine, except that the headers don't pass -Wredundant-decls.
  1799. # Therefore, let's disable -Wsystem-headers when we're building
  1800. # with maximal warnings on OpenBSD.
  1801. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1802. esac
  1803. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1804. # have it work better.
  1805. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1806. # This warning was added in gcc 4.3, but it appears to generate
  1807. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1808. #CFLAGS="$CFLAGS -Wlogical-op"
  1809. m4_foreach_w([warning_flag], [
  1810. -Waddress
  1811. -Waddress-of-array-temporary
  1812. -Waddress-of-temporary
  1813. -Wambiguous-macro
  1814. -Wanonymous-pack-parens
  1815. -Warc
  1816. -Warc-abi
  1817. -Warc-bridge-casts-disallowed-in-nonarc
  1818. -Warc-maybe-repeated-use-of-weak
  1819. -Warc-performSelector-leaks
  1820. -Warc-repeated-use-of-weak
  1821. -Warray-bounds
  1822. -Warray-bounds-pointer-arithmetic
  1823. -Wasm
  1824. -Wasm-operand-widths
  1825. -Watomic-properties
  1826. -Watomic-property-with-user-defined-accessor
  1827. -Wauto-import
  1828. -Wauto-storage-class
  1829. -Wauto-var-id
  1830. -Wavailability
  1831. -Wbackslash-newline-escape
  1832. -Wbad-array-new-length
  1833. -Wbind-to-temporary-copy
  1834. -Wbitfield-constant-conversion
  1835. -Wbool-conversion
  1836. -Wbool-conversions
  1837. -Wbuiltin-requires-header
  1838. -Wchar-align
  1839. -Wcompare-distinct-pointer-types
  1840. -Wcomplex-component-init
  1841. -Wconditional-type-mismatch
  1842. -Wconfig-macros
  1843. -Wconstant-conversion
  1844. -Wconstant-logical-operand
  1845. -Wconstexpr-not-const
  1846. -Wcustom-atomic-properties
  1847. -Wdangling-field
  1848. -Wdangling-initializer-list
  1849. -Wdate-time
  1850. -Wdelegating-ctor-cycles
  1851. -Wdeprecated-implementations
  1852. -Wdeprecated-register
  1853. -Wdirect-ivar-access
  1854. -Wdiscard-qual
  1855. -Wdistributed-object-modifiers
  1856. -Wdivision-by-zero
  1857. -Wdollar-in-identifier-extension
  1858. -Wdouble-promotion
  1859. -Wduplicate-decl-specifier
  1860. -Wduplicate-enum
  1861. -Wduplicate-method-arg
  1862. -Wduplicate-method-match
  1863. -Wduplicated-cond
  1864. -Wdynamic-class-memaccess
  1865. -Wembedded-directive
  1866. -Wempty-translation-unit
  1867. -Wenum-conversion
  1868. -Wexit-time-destructors
  1869. -Wexplicit-ownership-type
  1870. -Wextern-initializer
  1871. -Wextra
  1872. -Wextra-semi
  1873. -Wextra-tokens
  1874. -Wflexible-array-extensions
  1875. -Wfloat-conversion
  1876. -Wformat-non-iso
  1877. -Wfour-char-constants
  1878. -Wgcc-compat
  1879. -Wglobal-constructors
  1880. -Wgnu-array-member-paren-init
  1881. -Wgnu-designator
  1882. -Wgnu-static-float-init
  1883. -Wheader-guard
  1884. -Wheader-hygiene
  1885. -Widiomatic-parentheses
  1886. -Wignored-attributes
  1887. -Wimplicit-atomic-properties
  1888. -Wimplicit-conversion-floating-point-to-bool
  1889. -Wimplicit-exception-spec-mismatch
  1890. -Wimplicit-fallthrough
  1891. -Wimplicit-fallthrough-per-function
  1892. -Wimplicit-retain-self
  1893. -Wimport-preprocessor-directive-pedantic
  1894. -Wincompatible-library-redeclaration
  1895. -Wincompatible-pointer-types-discards-qualifiers
  1896. -Wincomplete-implementation
  1897. -Wincomplete-module
  1898. -Wincomplete-umbrella
  1899. -Winit-self
  1900. -Wint-conversions
  1901. -Wint-to-void-pointer-cast
  1902. -Winteger-overflow
  1903. -Winvalid-constexpr
  1904. -Winvalid-iboutlet
  1905. -Winvalid-noreturn
  1906. -Winvalid-pp-token
  1907. -Winvalid-source-encoding
  1908. -Winvalid-token-paste
  1909. -Wknr-promoted-parameter
  1910. -Wlarge-by-value-copy
  1911. -Wliteral-conversion
  1912. -Wliteral-range
  1913. -Wlocal-type-template-args
  1914. -Wlogical-op
  1915. -Wloop-analysis
  1916. -Wmain-return-type
  1917. -Wmalformed-warning-check
  1918. -Wmethod-signatures
  1919. -Wmicrosoft
  1920. -Wmicrosoft-exists
  1921. -Wmismatched-parameter-types
  1922. -Wmismatched-return-types
  1923. -Wmissing-field-initializers
  1924. -Wmissing-format-attribute
  1925. -Wmissing-noreturn
  1926. -Wmissing-selector-name
  1927. -Wmissing-sysroot
  1928. -Wmissing-variable-declarations
  1929. -Wmodule-conflict
  1930. -Wnested-anon-types
  1931. -Wnewline-eof
  1932. -Wnon-literal-null-conversion
  1933. -Wnon-pod-varargs
  1934. -Wnonportable-cfstrings
  1935. -Wnormalized=nfkc
  1936. -Wnull-arithmetic
  1937. -Wnull-character
  1938. -Wnull-conversion
  1939. -Wnull-dereference
  1940. -Wout-of-line-declaration
  1941. -Wover-aligned
  1942. -Woverlength-strings
  1943. -Woverride-init
  1944. -Woverriding-method-mismatch
  1945. -Wpointer-type-mismatch
  1946. -Wpredefined-identifier-outside-function
  1947. -Wprotocol-property-synthesis-ambiguity
  1948. -Wreadonly-iboutlet-property
  1949. -Wreadonly-setter-attrs
  1950. -Wreceiver-expr
  1951. -Wreceiver-forward-class
  1952. -Wreceiver-is-weak
  1953. -Wreinterpret-base-class
  1954. -Wrequires-super-attribute
  1955. -Wreserved-user-defined-literal
  1956. -Wreturn-stack-address
  1957. -Wsection
  1958. -Wselector-type-mismatch
  1959. -Wsentinel
  1960. -Wserialized-diagnostics
  1961. -Wshadow
  1962. -Wshift-count-negative
  1963. -Wshift-count-overflow
  1964. -Wshift-negative-value
  1965. -Wshift-overflow=2
  1966. -Wshift-sign-overflow
  1967. -Wshorten-64-to-32
  1968. -Wsizeof-array-argument
  1969. -Wsource-uses-openmp
  1970. -Wstatic-float-init
  1971. -Wstatic-in-inline
  1972. -Wstatic-local-in-inline
  1973. -Wstrict-overflow=1
  1974. -Wstring-compare
  1975. -Wstring-conversion
  1976. -Wstrlcpy-strlcat-size
  1977. -Wstrncat-size
  1978. -Wsuggest-attribute=format
  1979. -Wsuggest-attribute=noreturn
  1980. -Wsuper-class-method-mismatch
  1981. -Wswitch-bool
  1982. -Wsync-nand
  1983. -Wtautological-constant-out-of-range-compare
  1984. -Wtentative-definition-incomplete-type
  1985. -Wtrampolines
  1986. -Wtype-safety
  1987. -Wtypedef-redefinition
  1988. -Wtypename-missing
  1989. -Wundefined-inline
  1990. -Wundefined-internal
  1991. -Wundefined-reinterpret-cast
  1992. -Wunicode
  1993. -Wunicode-whitespace
  1994. -Wunknown-warning-option
  1995. -Wunnamed-type-template-args
  1996. -Wunneeded-member-function
  1997. -Wunsequenced
  1998. -Wunsupported-visibility
  1999. -Wunused-but-set-parameter
  2000. -Wunused-but-set-variable
  2001. -Wunused-command-line-argument
  2002. -Wunused-const-variable=2
  2003. -Wunused-exception-parameter
  2004. -Wunused-local-typedefs
  2005. -Wunused-member-function
  2006. -Wunused-sanitize-argument
  2007. -Wunused-volatile-lvalue
  2008. -Wuser-defined-literals
  2009. -Wvariadic-macros
  2010. -Wvector-conversion
  2011. -Wvector-conversions
  2012. -Wvexing-parse
  2013. -Wvisibility
  2014. -Wvla-extension
  2015. -Wzero-length-array
  2016. ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
  2017. dnl We should re-enable this in some later version. Clang doesn't
  2018. dnl mind, but it causes trouble with GCC.
  2019. dnl -Wstrict-overflow=2
  2020. dnl These seem to require annotations that we don't currently use,
  2021. dnl and they give false positives in our pthreads wrappers. (Clang 4)
  2022. dnl -Wthread-safety
  2023. dnl -Wthread-safety-analysis
  2024. dnl -Wthread-safety-attributes
  2025. dnl -Wthread-safety-beta
  2026. dnl -Wthread-safety-precise
  2027. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  2028. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  2029. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  2030. CFLAGS="$CFLAGS -Wwrite-strings"
  2031. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  2032. CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
  2033. CFLAGS="$CFLAGS -Wunused-parameter "
  2034. # These interfere with building main() { return 0; }, which autoconf
  2035. # likes to use as its default program.
  2036. CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
  2037. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  2038. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  2039. fi
  2040. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  2041. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  2042. fi
  2043. if test "x$enable_fatal_warnings" = "xyes"; then
  2044. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  2045. # default autoconf programs are full of errors.
  2046. CFLAGS="$CFLAGS -Werror"
  2047. fi
  2048. fi
  2049. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  2050. case "$host_os" in
  2051. darwin*)
  2052. AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
  2053. esac
  2054. fi
  2055. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  2056. AC_CONFIG_FILES([
  2057. Doxyfile
  2058. Makefile
  2059. config.rust
  2060. link_rust.sh
  2061. contrib/dist/suse/tor.sh
  2062. contrib/operator-tools/tor.logrotate
  2063. contrib/dist/tor.sh
  2064. contrib/dist/torctl
  2065. contrib/dist/tor.service
  2066. src/config/torrc.sample
  2067. src/config/torrc.minimal
  2068. src/rust/.cargo/config
  2069. scripts/maint/checkOptionDocs.pl
  2070. scripts/maint/updateVersions.pl
  2071. ])
  2072. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  2073. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  2074. for file in $regular_mans ; do
  2075. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  2076. echo "==================================";
  2077. echo;
  2078. echo "Building Tor has failed since manpages cannot be built.";
  2079. echo;
  2080. echo "You need asciidoc installed to be able to build the manpages.";
  2081. echo "To build without manpages, use the --disable-asciidoc argument";
  2082. echo "when calling configure.";
  2083. echo;
  2084. echo "==================================";
  2085. exit 1;
  2086. fi
  2087. done
  2088. fi
  2089. if test "$fragile_hardening" = "yes"; then
  2090. AC_MSG_WARN([
  2091. ============
  2092. Warning! Building Tor with --enable-fragile-hardening (also known as
  2093. --enable-expensive-hardening) makes some kinds of attacks harder, but makes
  2094. other kinds of attacks easier. A Tor instance build with this option will be
  2095. somewhat less vulnerable to remote code execution, arithmetic overflow, or
  2096. out-of-bounds read/writes... but at the cost of becoming more vulnerable to
  2097. denial of service attacks. For more information, see
  2098. https://trac.torproject.org/projects/tor/wiki/doc/TorFragileHardening
  2099. ============
  2100. ])
  2101. fi
  2102. AC_OUTPUT