configure.ac 50 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540154115421543154415451546154715481549155015511552155315541555155615571558155915601561156215631564156515661567156815691570157115721573157415751576157715781579158015811582158315841585158615871588158915901591159215931594159515961597159815991600160116021603160416051606
  1. dnl Copyright (c) 2001-2004, Roger Dingledine
  2. dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
  3. dnl Copyright (c) 2007-2013, The Tor Project, Inc.
  4. dnl See LICENSE for licensing information
  5. AC_INIT([tor],[0.2.5.16])
  6. AC_CONFIG_SRCDIR([src/or/main.c])
  7. AC_CONFIG_MACRO_DIR([m4])
  8. AM_INIT_AUTOMAKE
  9. m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
  10. AC_CONFIG_HEADERS([orconfig.h])
  11. AC_CANONICAL_HOST
  12. if test -f /etc/redhat-release ; then
  13. if test -f /usr/kerberos/include ; then
  14. CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
  15. fi
  16. fi
  17. # Not a no-op; we want to make sure that CPPFLAGS is set before we use
  18. # the += operator on it in src/or/Makefile.am
  19. CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
  20. #XXXX020 We should make these enabled or not, before 0.2.0.x-final
  21. AC_ARG_ENABLE(buf-freelists,
  22. AS_HELP_STRING(--enable-buf-freelists, enable freelists for buffer RAM))
  23. AC_ARG_ENABLE(mempools,
  24. AS_HELP_STRING(--enable-mempools, enable mempools for relay cells))
  25. AC_ARG_ENABLE(openbsd-malloc,
  26. AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd. Linux only))
  27. AC_ARG_ENABLE(instrument-downloads,
  28. AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
  29. AC_ARG_ENABLE(static-openssl,
  30. AS_HELP_STRING(--enable-static-openssl, Link against a static openssl library. Requires --with-openssl-dir))
  31. AC_ARG_ENABLE(static-libevent,
  32. AS_HELP_STRING(--enable-static-libevent, Link against a static libevent library. Requires --with-libevent-dir))
  33. AC_ARG_ENABLE(static-zlib,
  34. AS_HELP_STRING(--enable-static-zlib, Link against a static zlib library. Requires --with-zlib-dir))
  35. AC_ARG_ENABLE(static-tor,
  36. AS_HELP_STRING(--enable-static-tor, Create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir))
  37. AC_ARG_ENABLE(curve25519,
  38. AS_HELP_STRING(--disable-curve25519, Build Tor with no curve25519 elliptic-curve crypto support))
  39. AC_ARG_ENABLE(unittests,
  40. AS_HELP_STRING(--disable-unittests, [Don't build unit tests for Tor. Risky!]))
  41. AC_ARG_ENABLE(coverage,
  42. AS_HELP_STRING(--enable-coverage, [Enable coverage support in the unit-test build]))
  43. AM_CONDITIONAL(UNITTESTS_ENABLED, test x$enable_unittests != xno)
  44. AM_CONDITIONAL(COVERAGE_ENABLED, test x$enable_coverage = xyes)
  45. if test "$enable_static_tor" = "yes"; then
  46. enable_static_libevent="yes";
  47. enable_static_openssl="yes";
  48. enable_static_zlib="yes";
  49. CFLAGS="$CFLAGS -static"
  50. fi
  51. if test x$enable_buf_freelists = xyes; then
  52. AC_DEFINE(ENABLE_BUF_FREELISTS, 1,
  53. [Defined if we try to use freelists for buffer RAM chunks])
  54. fi
  55. AM_CONDITIONAL(USE_MEMPOOLS, test x$enable_mempools = xyes)
  56. if test x$enable_mempools = xyes; then
  57. AC_DEFINE(ENABLE_MEMPOOLS, 1,
  58. [Defined if we try to use mempools for cells being relayed])
  59. fi
  60. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
  61. if test x$enable_instrument_downloads = xyes; then
  62. AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
  63. [Defined if we want to keep track of how much of each kind of resource we download.])
  64. fi
  65. AC_ARG_ENABLE(transparent,
  66. AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
  67. [case "${enableval}" in
  68. yes) transparent=true ;;
  69. no) transparent=false ;;
  70. *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
  71. esac], [transparent=true])
  72. AC_ARG_ENABLE(asciidoc,
  73. AS_HELP_STRING(--disable-asciidoc, don't use asciidoc (disables building of manpages)),
  74. [case "${enableval}" in
  75. yes) asciidoc=true ;;
  76. no) asciidoc=false ;;
  77. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  78. esac], [asciidoc=true])
  79. # By default, we're not ready to ship a NAT-PMP aware Tor
  80. AC_ARG_ENABLE(nat-pmp,
  81. AS_HELP_STRING(--enable-nat-pmp, enable NAT-PMP support),
  82. [case "${enableval}" in
  83. yes) natpmp=true ;;
  84. no) natpmp=false ;;
  85. * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
  86. esac], [natpmp=false])
  87. # By default, we're not ready to ship a UPnP aware Tor
  88. AC_ARG_ENABLE(upnp,
  89. AS_HELP_STRING(--enable-upnp, enable UPnP support),
  90. [case "${enableval}" in
  91. yes) upnp=true ;;
  92. no) upnp=false ;;
  93. * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
  94. esac], [upnp=false])
  95. AC_ARG_ENABLE(threads,
  96. AS_HELP_STRING(--disable-threads, disable multi-threading support))
  97. if test x$enable_threads = x; then
  98. case $host in
  99. *-*-solaris* )
  100. # Don't try multithreading on solaris -- cpuworkers seem to lock.
  101. AC_MSG_NOTICE([You are running Solaris; Sometimes threading makes
  102. cpu workers lock up here, so I will disable threads.])
  103. enable_threads="no";;
  104. *)
  105. enable_threads="yes";;
  106. esac
  107. fi
  108. if test "$enable_threads" = "yes"; then
  109. AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
  110. fi
  111. case $host in
  112. *-*-solaris* )
  113. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  114. ;;
  115. esac
  116. AC_ARG_ENABLE(gcc-warnings,
  117. AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
  118. AC_ARG_ENABLE(gcc-warnings-advisory,
  119. AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
  120. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  121. AC_ARG_ENABLE(gcc-hardening,
  122. AS_HELP_STRING(--disable-gcc-hardening, disable compiler security checks))
  123. AC_ARG_ENABLE(expensive-hardening,
  124. AS_HELP_STRING(--enable-expensive-hardening, enable more expensive compiler hardening; makes Tor slower))
  125. dnl Linker hardening options
  126. dnl Currently these options are ELF specific - you can't use this with MacOSX
  127. AC_ARG_ENABLE(linker-hardening,
  128. AS_HELP_STRING(--disable-linker-hardening, disable linker security fixups))
  129. AC_ARG_ENABLE(local-appdata,
  130. AS_HELP_STRING(--enable-local-appdata, default to host local application data paths on Windows))
  131. if test "$enable_local_appdata" = "yes"; then
  132. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  133. [Defined if we default to host local appdata paths on Windows])
  134. fi
  135. # Tor2web mode flag
  136. AC_ARG_ENABLE(tor2web-mode,
  137. AS_HELP_STRING(--enable-tor2web-mode, support tor2web non-anonymous mode),
  138. [if test x$enableval = xyes; then
  139. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  140. fi])
  141. AC_ARG_ENABLE(bufferevents,
  142. AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))
  143. AC_ARG_ENABLE(tool-name-check,
  144. AS_HELP_STRING(--disable-tool-name-check, check for sanely named toolchain when cross-compiling))
  145. AC_ARG_ENABLE(seccomp,
  146. AS_HELP_STRING(--disable-seccomp, do not attempt to use libseccomp))
  147. dnl check for the correct "ar" when cross-compiling
  148. AN_MAKEVAR([AR], [AC_PROG_AR])
  149. AN_PROGRAM([ar], [AC_PROG_AR])
  150. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
  151. AC_PROG_AR
  152. dnl Check whether the above macro has settled for a simply named tool even
  153. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  154. dnl because that will find any cc on the system, not only the cross-compiler,
  155. dnl and then verify that a binary built with this compiler runs on the
  156. dnl build system. It will then come to the false conclusion that we're not
  157. dnl cross-compiling.
  158. if test x$enable_tool_name_check != xno; then
  159. if test x$ac_tool_warned = xyes; then
  160. 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.)])
  161. elif test "x$ac_ct_AR" != x -a x$cross_compiling = xmaybe; then
  162. 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.)])
  163. fi
  164. fi
  165. AC_PROG_CC
  166. AC_PROG_CPP
  167. AC_PROG_MAKE_SET
  168. AC_PROG_RANLIB
  169. dnl autoconf 2.59 appears not to support AC_PROG_SED
  170. AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
  171. dnl check for asciidoc and a2x
  172. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  173. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  174. AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
  175. AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
  176. AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
  177. AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
  178. AM_PROG_CC_C_O
  179. AC_ARG_VAR(PYTHON)
  180. AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
  181. if test "x$PYTHON" = "x"; then
  182. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  183. fi
  184. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  185. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  186. AC_C_FLEXIBLE_ARRAY_MEMBER
  187. ], [
  188. dnl Maybe we've got an old autoconf...
  189. AC_CACHE_CHECK([for flexible array members],
  190. tor_cv_c_flexarray,
  191. [AC_COMPILE_IFELSE(
  192. AC_LANG_PROGRAM([
  193. struct abc { int a; char b[]; };
  194. ], [
  195. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  196. def->b[0] = 33;
  197. ]),
  198. [tor_cv_c_flexarray=yes],
  199. [tor_cv_c_flexarray=no])])
  200. if test $tor_cv_flexarray = yes ; then
  201. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  202. else
  203. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  204. fi
  205. ])
  206. AC_PATH_PROG([SHA1SUM], [sha1sum], none)
  207. AC_PATH_PROG([OPENSSL], [openssl], none)
  208. TORUSER=_tor
  209. AC_ARG_WITH(tor-user,
  210. [ --with-tor-user=NAME Specify username for tor daemon ],
  211. [
  212. TORUSER=$withval
  213. ]
  214. )
  215. AC_SUBST(TORUSER)
  216. TORGROUP=_tor
  217. AC_ARG_WITH(tor-group,
  218. [ --with-tor-group=NAME Specify group name for tor daemon ],
  219. [
  220. TORGROUP=$withval
  221. ]
  222. )
  223. AC_SUBST(TORGROUP)
  224. dnl If _WIN32 is defined and non-zero, we are building for win32
  225. AC_MSG_CHECKING([for win32])
  226. AC_RUN_IFELSE([AC_LANG_SOURCE([
  227. int main(int c, char **v) {
  228. #ifdef _WIN32
  229. #if _WIN32
  230. return 0;
  231. #else
  232. return 1;
  233. #endif
  234. #else
  235. return 2;
  236. #endif
  237. }])],
  238. bwin32=true; AC_MSG_RESULT([yes]),
  239. bwin32=false; AC_MSG_RESULT([no]),
  240. bwin32=cross; AC_MSG_RESULT([cross])
  241. )
  242. if test "$bwin32" = cross; then
  243. AC_MSG_CHECKING([for win32 (cross)])
  244. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  245. #ifdef _WIN32
  246. int main(int c, char **v) {return 0;}
  247. #else
  248. #error
  249. int main(int c, char **v) {return x(y);}
  250. #endif
  251. ])],
  252. bwin32=true; AC_MSG_RESULT([yes]),
  253. bwin32=false; AC_MSG_RESULT([no]))
  254. fi
  255. AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
  256. dnl Enable C99 when compiling with MIPSpro
  257. AC_MSG_CHECKING([for MIPSpro compiler])
  258. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  259. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  260. #error
  261. return x(y);
  262. #endif
  263. ])],
  264. bmipspro=false; AC_MSG_RESULT(no),
  265. bmipspro=true; AC_MSG_RESULT(yes))
  266. if test "$bmipspro" = true; then
  267. CFLAGS="$CFLAGS -c99"
  268. fi
  269. AC_C_BIGENDIAN
  270. AC_SEARCH_LIBS(socket, [socket network])
  271. AC_SEARCH_LIBS(gethostbyname, [nsl])
  272. AC_SEARCH_LIBS(dlopen, [dl])
  273. AC_SEARCH_LIBS(inet_aton, [resolv])
  274. saved_LIBS="$LIBS"
  275. AC_SEARCH_LIBS([clock_gettime], [rt])
  276. if test "$LIBS" != "$saved_LIBS"; then
  277. # Looks like we need -lrt for clock_gettime().
  278. have_rt=yes
  279. fi
  280. if test "$enable_threads" = "yes"; then
  281. AC_SEARCH_LIBS(pthread_create, [pthread])
  282. AC_SEARCH_LIBS(pthread_detach, [pthread])
  283. fi
  284. dnl -------------------------------------------------------------------
  285. dnl Check for functions before libevent, since libevent-1.2 apparently
  286. dnl exports strlcpy without defining it in a header.
  287. AC_CHECK_FUNCS(
  288. _NSGetEnviron \
  289. accept4 \
  290. backtrace \
  291. backtrace_symbols_fd \
  292. clock_gettime \
  293. flock \
  294. ftime \
  295. getaddrinfo \
  296. getifaddrs \
  297. getrlimit \
  298. gettimeofday \
  299. gmtime_r \
  300. inet_aton \
  301. ioctl \
  302. issetugid \
  303. llround \
  304. localtime_r \
  305. lround \
  306. memmem \
  307. prctl \
  308. rint \
  309. sigaction \
  310. socketpair \
  311. strlcat \
  312. strlcpy \
  313. strptime \
  314. strtok_r \
  315. strtoull \
  316. sysconf \
  317. sysctl \
  318. uname \
  319. usleep \
  320. vasprintf \
  321. _vscprintf
  322. )
  323. if test "$enable_threads" = "yes"; then
  324. AC_CHECK_HEADERS(pthread.h)
  325. AC_CHECK_FUNCS(pthread_create)
  326. fi
  327. dnl ------------------------------------------------------
  328. dnl Where do you live, libevent? And how do we call you?
  329. if test "$bwin32" = true; then
  330. TOR_LIB_WS32=-lws2_32
  331. TOR_LIB_IPHLPAPI=-liphlpapi
  332. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  333. # think it's actually necessary.
  334. TOR_LIB_GDI=-lgdi32
  335. else
  336. TOR_LIB_WS32=
  337. TOR_LIB_GDI=
  338. fi
  339. AC_SUBST(TOR_LIB_WS32)
  340. AC_SUBST(TOR_LIB_GDI)
  341. AC_SUBST(TOR_LIB_IPHLPAPI)
  342. dnl We need to do this before we try our disgusting hack below.
  343. AC_CHECK_HEADERS([sys/types.h])
  344. dnl This is a disgusting hack so we safely include older libevent headers.
  345. AC_CHECK_TYPE(u_int64_t, unsigned long long)
  346. AC_CHECK_TYPE(u_int32_t, unsigned long)
  347. AC_CHECK_TYPE(u_int16_t, unsigned short)
  348. AC_CHECK_TYPE(u_int8_t, unsigned char)
  349. tor_libevent_pkg_redhat="libevent"
  350. tor_libevent_pkg_debian="libevent-dev"
  351. tor_libevent_devpkg_redhat="libevent-devel"
  352. tor_libevent_devpkg_debian="libevent-dev"
  353. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  354. dnl linking for static builds.
  355. STATIC_LIBEVENT_FLAGS=""
  356. if test "$enable_static_libevent" = "yes"; then
  357. if test "$have_rt" = yes; then
  358. STATIC_LIBEVENT_FLAGS=" -lrt "
  359. fi
  360. fi
  361. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  362. #ifdef _WIN32
  363. #include <winsock2.h>
  364. #endif
  365. #include <stdlib.h>
  366. #include <sys/time.h>
  367. #include <sys/types.h>
  368. #include <event.h>], [
  369. #ifdef _WIN32
  370. #include <winsock2.h>
  371. #endif
  372. void exit(int); void *event_init(void);],
  373. [
  374. #ifdef _WIN32
  375. {WSADATA d; WSAStartup(0x101,&d); }
  376. #endif
  377. event_init(); exit(0);
  378. ], [--with-libevent-dir], [/opt/libevent])
  379. dnl Now check for particular libevent functions.
  380. save_LIBS="$LIBS"
  381. save_LDFLAGS="$LDFLAGS"
  382. save_CPPFLAGS="$CPPFLAGS"
  383. LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
  384. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  385. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  386. AC_CHECK_FUNCS([event_get_version \
  387. event_get_version_number \
  388. event_get_method \
  389. event_set_log_callback \
  390. evutil_secure_rng_set_urandom_device_file \
  391. evutil_secure_rng_init \
  392. event_base_loopexit])
  393. AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
  394. [#include <event.h>
  395. ])
  396. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  397. LIBS="$save_LIBS"
  398. LDFLAGS="$save_LDFLAGS"
  399. CPPFLAGS="$save_CPPFLAGS"
  400. AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
  401. if test "$enable_static_libevent" = "yes"; then
  402. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  403. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  404. else
  405. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  406. fi
  407. else
  408. TOR_LIBEVENT_LIBS="-levent"
  409. fi
  410. dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
  411. dnl we can do much better.
  412. if test "$enable_bufferevents" = "yes" ; then
  413. if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
  414. AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
  415. else
  416. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  417. # Check for the right version. First see if version detection works.
  418. AC_MSG_CHECKING([whether we can detect the Libevent version])
  419. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  420. #include <event2/event.h>
  421. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
  422. #error
  423. int x = y(zz);
  424. #else
  425. int x = 1;
  426. #endif
  427. ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
  428. [event_version_number_works=no; AC_MSG_RESULT([no])])
  429. if test "$event_version_number_works" != 'yes'; then
  430. AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
  431. else
  432. AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
  433. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  434. #include <event2/event.h>
  435. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
  436. #error
  437. int x = y(zz);
  438. #else
  439. int x = 1;
  440. #endif
  441. ])], [ AC_MSG_RESULT([yes]) ],
  442. [ AC_MSG_RESULT([no])
  443. AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
  444. fi
  445. fi
  446. fi
  447. LIBS="$save_LIBS"
  448. LDFLAGS="$save_LDFLAGS"
  449. CPPFLAGS="$save_CPPFLAGS"
  450. AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
  451. if test "$enable_bufferevents" = "yes"; then
  452. AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
  453. if test "$enable_static_libevent" = "yes"; then
  454. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
  455. else
  456. TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
  457. fi
  458. fi
  459. AC_SUBST(TOR_LIBEVENT_LIBS)
  460. dnl ------------------------------------------------------
  461. dnl Where do you live, libm?
  462. dnl On some platforms (Haiku/BeOS) the math library is
  463. dnl part of libroot. In which case don't link against lm
  464. TOR_LIB_MATH=""
  465. save_LIBS="$LIBS"
  466. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  467. if test "$ac_cv_search_pow" != "none required"; then
  468. TOR_LIB_MATH="$ac_cv_search_pow"
  469. fi
  470. LIBS="$save_LIBS"
  471. AC_SUBST(TOR_LIB_MATH)
  472. dnl ------------------------------------------------------
  473. dnl Where do you live, openssl? And how do we call you?
  474. tor_openssl_pkg_redhat="openssl"
  475. tor_openssl_pkg_debian="libssl-dev"
  476. tor_openssl_devpkg_redhat="openssl-devel"
  477. tor_openssl_devpkg_debian="libssl-dev"
  478. ALT_openssl_WITHVAL=""
  479. AC_ARG_WITH(ssl-dir,
  480. [ --with-ssl-dir=PATH Obsolete alias for --with-openssl-dir ],
  481. [
  482. if test "x$withval" != xno && test "x$withval" != "x" ; then
  483. ALT_openssl_WITHVAL="$withval"
  484. fi
  485. ])
  486. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
  487. [#include <openssl/rand.h>],
  488. [void RAND_add(const void *buf, int num, double entropy);],
  489. [RAND_add((void*)0,0,0); exit(0);], [],
  490. [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
  491. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  492. if test "$enable_static_openssl" = "yes"; then
  493. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  494. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  495. else
  496. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  497. fi
  498. else
  499. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  500. fi
  501. AC_SUBST(TOR_OPENSSL_LIBS)
  502. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  503. [#include <openssl/ssl.h>
  504. ])
  505. dnl ------------------------------------------------------
  506. dnl Where do you live, zlib? And how do we call you?
  507. tor_zlib_pkg_redhat="zlib"
  508. tor_zlib_pkg_debian="zlib1g"
  509. tor_zlib_devpkg_redhat="zlib-devel"
  510. tor_zlib_devpkg_debian="zlib1g-dev"
  511. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  512. [#include <zlib.h>],
  513. [const char * zlibVersion(void);],
  514. [zlibVersion(); exit(0);], [--with-zlib-dir],
  515. [/opt/zlib])
  516. if test "$enable_static_zlib" = "yes"; then
  517. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  518. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  519. using --enable-static-zlib")
  520. else
  521. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  522. fi
  523. else
  524. TOR_ZLIB_LIBS="-lz"
  525. fi
  526. AC_SUBST(TOR_ZLIB_LIBS)
  527. dnl ---------------------------------------------------------------------
  528. dnl Now that we know about our major libraries, we can check for compiler
  529. dnl and linker hardening options. We need to do this with the libraries known,
  530. dnl since sometimes the linker will like an option but not be willing to
  531. dnl use it with a build of a library.
  532. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  533. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
  534. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  535. #if !defined(__clang__)
  536. #error
  537. #endif])], have_clang=yes, have_clang=no)
  538. if test x$enable_gcc_hardening != xno; then
  539. CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
  540. if test x$have_clang = xyes; then
  541. TOR_CHECK_CFLAGS(-Qunused-arguments)
  542. fi
  543. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  544. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  545. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  546. AS_VAR_IF(can_compile, [yes],
  547. AS_VAR_IF(can_link, [yes],
  548. [],
  549. 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.)]))
  550. )
  551. AS_VAR_POPDEF([can_link])
  552. AS_VAR_POPDEF([can_compile])
  553. TOR_CHECK_CFLAGS(-Wstack-protector)
  554. TOR_CHECK_CFLAGS(-fwrapv)
  555. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  556. if test "$bwin32" = "false"; then
  557. TOR_CHECK_CFLAGS(-fPIE)
  558. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  559. fi
  560. fi
  561. if test x$enable_expensive_hardening = xyes ; then
  562. TOR_CHECK_CFLAGS([-fsanitize=address])
  563. TOR_CHECK_CFLAGS([-fsanitize=undefined])
  564. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  565. fi
  566. if test x$enable_linker_hardening != xno; then
  567. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  568. fi
  569. # For backtrace support
  570. TOR_CHECK_LDFLAGS(-rdynamic)
  571. dnl ------------------------------------------------------
  572. dnl Now see if we have a -fomit-frame-pointer compiler option.
  573. saved_CFLAGS="$CFLAGS"
  574. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  575. F_OMIT_FRAME_POINTER=''
  576. if test "$saved_CFLAGS" != "$CFLAGS"; then
  577. if test x$enable_expensive_hardening != xyes ; then
  578. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  579. fi
  580. fi
  581. CFLAGS="$saved_CFLAGS"
  582. AC_SUBST(F_OMIT_FRAME_POINTER)
  583. dnl ------------------------------------------------------
  584. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  585. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  586. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  587. dnl code will work.
  588. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  589. dnl ------------------------------------------------------
  590. dnl Where do you live, libnatpmp? And how do we call you?
  591. dnl There are no packages for Debian or Redhat as of this patch
  592. if test "$natpmp" = "true"; then
  593. AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
  594. TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  595. [#include <natpmp.h>],
  596. [#ifdef _WIN32
  597. #define STATICLIB
  598. #endif
  599. #include <natpmp.h>],
  600. [ int r;
  601. natpmp_t natpmp;
  602. natpmpresp_t response;
  603. r = initnatpmp(&natpmp, 0, 0);],
  604. [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
  605. exit(0);],
  606. [--with-libnatpmp-dir],
  607. [/usr/lib/])
  608. fi
  609. dnl ------------------------------------------------------
  610. dnl Where do you live, libminiupnpc? And how do we call you?
  611. dnl There are no packages for Debian or Redhat as of this patch
  612. if test "$upnp" = "true"; then
  613. AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
  614. dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
  615. dnl to see if we have miniupnpc-1.5 or -1.6
  616. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
  617. [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])
  618. if test "$miniupnpc15" = "true" ; then
  619. AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
  620. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  621. [#include <miniupnpc/miniwget.h>
  622. #include <miniupnpc/miniupnpc.h>
  623. #include <miniupnpc/upnpcommands.h>],
  624. [void upnpDiscover(int delay, const char * multicastif,
  625. const char * minissdpdsock, int sameport);],
  626. [upnpDiscover(1, 0, 0, 0); exit(0);],
  627. [--with-libminiupnpc-dir],
  628. [/usr/lib/])
  629. else
  630. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  631. [#include <miniupnpc/miniwget.h>
  632. #include <miniupnpc/miniupnpc.h>
  633. #include <miniupnpc/upnpcommands.h>],
  634. [void upnpDiscover(int delay, const char * multicastif,
  635. const char * minissdpdsock, int sameport, int ipv6, int * error);],
  636. [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
  637. [--with-libminiupnpc-dir],
  638. [/usr/lib/])
  639. fi
  640. fi
  641. dnl ============================================================
  642. dnl Check for libseccomp
  643. if test "x$enable_seccomp" != "xno"; then
  644. AC_CHECK_HEADERS([seccomp.h])
  645. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  646. fi
  647. dnl ============================================================
  648. dnl We need an implementation of curve25519.
  649. dnl set these defaults.
  650. have_a_curve25519=no
  651. build_curve25519_donna=no
  652. build_curve25519_donna_c64=no
  653. use_curve25519_donna=no
  654. use_curve25519_nacl=no
  655. CURVE25519_LIBS=
  656. if test x$enable_curve25519 != xno; then
  657. dnl The best choice is using curve25519-donna-c64, but that requires
  658. dnl that we
  659. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  660. tor_cv_can_use_curve25519_donna_c64,
  661. [AC_RUN_IFELSE(
  662. [AC_LANG_PROGRAM([dnl
  663. #include <stdint.h>
  664. typedef unsigned uint128_t __attribute__((mode(TI)));
  665. int func(uint64_t a, uint64_t b) {
  666. uint128_t c = ((uint128_t)a) * b;
  667. int ok = ((uint64_t)(c>>96)) == 522859 &&
  668. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  669. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  670. (((uint64_t)(c))&0xffffffffL) == 0;
  671. return ok;
  672. }
  673. ], [dnl
  674. int ok = func( ((uint64_t)2000000000) * 1000000000,
  675. ((uint64_t)1234567890) << 24);
  676. return !ok;
  677. ])],
  678. [tor_cv_can_use_curve25519_donna_c64=yes],
  679. [tor_cv_can_use_curve25519_donna_c64=no],
  680. [AC_LINK_IFELSE(
  681. [AC_LANG_PROGRAM([dnl
  682. #include <stdint.h>
  683. typedef unsigned uint128_t __attribute__((mode(TI)));
  684. int func(uint64_t a, uint64_t b) {
  685. uint128_t c = ((uint128_t)a) * b;
  686. int ok = ((uint64_t)(c>>96)) == 522859 &&
  687. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  688. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  689. (((uint64_t)(c))&0xffffffffL) == 0;
  690. return ok;
  691. }
  692. ], [dnl
  693. int ok = func( ((uint64_t)2000000000) * 1000000000,
  694. ((uint64_t)1234567890) << 24);
  695. return !ok;
  696. ])],
  697. [tor_cv_can_use_curve25519_donna_c64=cross],
  698. [tor_cv_can_use_curve25519_donna_c64=no])])])
  699. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  700. nacl/crypto_scalarmult_curve25519.h])
  701. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  702. tor_cv_can_use_curve25519_nacl,
  703. [tor_saved_LIBS="$LIBS"
  704. LIBS="$LIBS -lnacl"
  705. AC_LINK_IFELSE(
  706. [AC_LANG_PROGRAM([dnl
  707. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  708. #include <crypto_scalarmult_curve25519.h>
  709. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  710. #include <nacl/crypto_scalarmult_curve25519.h>
  711. #endif
  712. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  713. #error Hey, this is the reference implementation! That's not fast.
  714. #endif
  715. ], [
  716. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  717. ])], [tor_cv_can_use_curve25519_nacl=yes],
  718. [tor_cv_can_use_curve25519_nacl=no])
  719. LIBS="$tor_saved_LIBS" ])
  720. dnl Okay, now we need to figure out which one to actually use. Fall back
  721. dnl to curve25519-donna.c
  722. if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
  723. build_curve25519_donna_c64=yes
  724. use_curve25519_donna=yes
  725. elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
  726. use_curve25519_nacl=yes
  727. CURVE25519_LIBS=-lnacl
  728. else
  729. build_curve25519_donna=yes
  730. use_curve25519_donna=yes
  731. fi
  732. have_a_curve25519=yes
  733. fi
  734. if test x$have_a_curve25519 = xyes; then
  735. AC_DEFINE(CURVE25519_ENABLED, 1,
  736. [Defined if we have a curve25519 implementation])
  737. fi
  738. if test x$use_curve25519_donna = xyes; then
  739. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  740. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  741. fi
  742. if test x$use_curve25519_nacl = xyes; then
  743. AC_DEFINE(USE_CURVE25519_NACL, 1,
  744. [Defined if we should use a curve25519 from nacl])
  745. fi
  746. AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
  747. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
  748. AM_CONDITIONAL(CURVE25519_ENABLED, test x$have_a_curve25519 = xyes)
  749. AC_SUBST(CURVE25519_LIBS)
  750. dnl Make sure to enable support for large off_t if available.
  751. AC_SYS_LARGEFILE
  752. AC_CHECK_HEADERS(
  753. assert.h \
  754. errno.h \
  755. fcntl.h \
  756. signal.h \
  757. string.h \
  758. sys/fcntl.h \
  759. sys/stat.h \
  760. sys/time.h \
  761. sys/types.h \
  762. time.h \
  763. unistd.h
  764. , , AC_MSG_WARN(Some headers were not found, compilation may fail. If compilation succeeds, please send your orconfig.h to the developers so we can fix this warning.))
  765. dnl These headers are not essential
  766. AC_CHECK_HEADERS(
  767. arpa/inet.h \
  768. crt_externs.h \
  769. execinfo.h \
  770. grp.h \
  771. ifaddrs.h \
  772. inttypes.h \
  773. limits.h \
  774. linux/types.h \
  775. machine/limits.h \
  776. malloc.h \
  777. malloc/malloc.h \
  778. malloc_np.h \
  779. netdb.h \
  780. netinet/in.h \
  781. netinet/in6.h \
  782. pwd.h \
  783. stdint.h \
  784. sys/file.h \
  785. sys/ioctl.h \
  786. sys/limits.h \
  787. sys/mman.h \
  788. sys/param.h \
  789. sys/prctl.h \
  790. sys/resource.h \
  791. sys/select.h \
  792. sys/socket.h \
  793. sys/sysctl.h \
  794. sys/syslimits.h \
  795. sys/time.h \
  796. sys/types.h \
  797. sys/un.h \
  798. sys/utime.h \
  799. sys/wait.h \
  800. syslog.h \
  801. utime.h
  802. )
  803. AC_CHECK_HEADERS(sys/param.h)
  804. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  805. [#ifdef HAVE_SYS_TYPES_H
  806. #include <sys/types.h>
  807. #endif
  808. #ifdef HAVE_SYS_SOCKET_H
  809. #include <sys/socket.h>
  810. #endif])
  811. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  812. [#ifdef HAVE_SYS_TYPES_H
  813. #include <sys/types.h>
  814. #endif
  815. #ifdef HAVE_SYS_SOCKET_H
  816. #include <sys/socket.h>
  817. #endif
  818. #ifdef HAVE_NET_IF_H
  819. #include <net/if.h>
  820. #endif])
  821. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  822. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  823. [#ifdef HAVE_SYS_TYPES_H
  824. #include <sys/types.h>
  825. #endif
  826. #ifdef HAVE_SYS_SOCKET_H
  827. #include <sys/socket.h>
  828. #endif
  829. #ifdef HAVE_LIMITS_H
  830. #include <limits.h>
  831. #endif
  832. #ifdef HAVE_LINUX_TYPES_H
  833. #include <linux/types.h>
  834. #endif
  835. #ifdef HAVE_NETINET_IN6_H
  836. #include <netinet/in6.h>
  837. #endif
  838. #ifdef HAVE_NETINET_IN_H
  839. #include <netinet/in.h>
  840. #endif])
  841. if test x$transparent = xtrue ; then
  842. transparent_ok=0
  843. if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
  844. transparent_ok=1
  845. fi
  846. if test x$linux_netfilter_ipv4 = x1 ; then
  847. transparent_ok=1
  848. fi
  849. if test x$transparent_ok = x1 ; then
  850. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  851. case $host in
  852. *-*-openbsd* | *-*-bitrig*)
  853. AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
  854. esac
  855. else
  856. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  857. fi
  858. fi
  859. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  860. [#ifdef HAVE_SYS_TYPES_H
  861. #include <sys/types.h>
  862. #endif
  863. #ifdef HAVE_SYS_TIME_H
  864. #include <sys/time.h>
  865. #endif])
  866. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  867. dnl Watch out.
  868. AC_CHECK_SIZEOF(int8_t)
  869. AC_CHECK_SIZEOF(int16_t)
  870. AC_CHECK_SIZEOF(int32_t)
  871. AC_CHECK_SIZEOF(int64_t)
  872. AC_CHECK_SIZEOF(uint8_t)
  873. AC_CHECK_SIZEOF(uint16_t)
  874. AC_CHECK_SIZEOF(uint32_t)
  875. AC_CHECK_SIZEOF(uint64_t)
  876. AC_CHECK_SIZEOF(intptr_t)
  877. AC_CHECK_SIZEOF(uintptr_t)
  878. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  879. AC_CHECK_SIZEOF(char)
  880. AC_CHECK_SIZEOF(short)
  881. AC_CHECK_SIZEOF(int)
  882. AC_CHECK_SIZEOF(long)
  883. AC_CHECK_SIZEOF(long long)
  884. AC_CHECK_SIZEOF(__int64)
  885. AC_CHECK_SIZEOF(void *)
  886. AC_CHECK_SIZEOF(time_t)
  887. AC_CHECK_SIZEOF(size_t)
  888. AC_CHECK_SIZEOF(pid_t)
  889. AC_CHECK_TYPES([uint, u_char, ssize_t])
  890. AC_PC_FROM_UCONTEXT([/bin/true])
  891. dnl used to include sockaddr_storage, but everybody has that.
  892. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  893. [#ifdef HAVE_SYS_TYPES_H
  894. #include <sys/types.h>
  895. #endif
  896. #ifdef HAVE_NETINET_IN_H
  897. #include <netinet/in.h>
  898. #endif
  899. #ifdef HAVE_NETINET_IN6_H
  900. #include <netinet/in6.h>
  901. #endif
  902. #ifdef HAVE_SYS_SOCKET_H
  903. #include <sys/socket.h>
  904. #endif
  905. #ifdef _WIN32
  906. #define _WIN32_WINNT 0x0501
  907. #define WIN32_LEAN_AND_MEAN
  908. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  909. #include <winsock.h>
  910. #else
  911. #include <winsock2.h>
  912. #include <ws2tcpip.h>
  913. #endif
  914. #endif
  915. ])
  916. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  917. [#ifdef HAVE_SYS_TYPES_H
  918. #include <sys/types.h>
  919. #endif
  920. #ifdef HAVE_NETINET_IN_H
  921. #include <netinet/in.h>
  922. #endif
  923. #ifdef HAVE_NETINET_IN6_H
  924. #include <netinet/in6.h>
  925. #endif
  926. #ifdef HAVE_SYS_SOCKET_H
  927. #include <sys/socket.h>
  928. #endif
  929. #ifdef _WIN32
  930. #define _WIN32_WINNT 0x0501
  931. #define WIN32_LEAN_AND_MEAN
  932. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  933. #include <winsock.h>
  934. #else
  935. #include <winsock2.h>
  936. #include <ws2tcpip.h>
  937. #endif
  938. #endif
  939. ])
  940. AC_CHECK_TYPES([rlim_t], , ,
  941. [#ifdef HAVE_SYS_TYPES_H
  942. #include <sys/types.h>
  943. #endif
  944. #ifdef HAVE_SYS_TIME_H
  945. #include <sys/time.h>
  946. #endif
  947. #ifdef HAVE_SYS_RESOURCE_H
  948. #include <sys/resource.h>
  949. #endif
  950. ])
  951. AX_CHECK_SIGN([time_t],
  952. [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
  953. [ : ], [
  954. #ifdef HAVE_SYS_TYPES_H
  955. #include <sys/types.h>
  956. #endif
  957. #ifdef HAVE_SYS_TIME_H
  958. #include <sys/time.h>
  959. #endif
  960. #ifdef HAVE_TIME_H
  961. #include <time.h>
  962. #endif
  963. ])
  964. if test "$ax_cv_decl_time_t_signed" = no; then
  965. AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
  966. fi
  967. AX_CHECK_SIGN([size_t],
  968. [ tor_cv_size_t_signed=yes ],
  969. [ tor_cv_size_t_signed=no ], [
  970. #ifdef HAVE_SYS_TYPES_H
  971. #include <sys/types.h>
  972. #endif
  973. ])
  974. if test "$ax_cv_decl_size_t_signed" = yes; then
  975. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  976. fi
  977. AX_CHECK_SIGN([enum always],
  978. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  979. [ : ], [
  980. enum always { AAA, BBB, CCC };
  981. ])
  982. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  983. #ifdef HAVE_SYS_SOCKET_H
  984. #include <sys/socket.h>
  985. #endif
  986. ])
  987. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  988. AC_CHECK_SIZEOF(cell_t)
  989. # Now make sure that NULL can be represented as zero bytes.
  990. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  991. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  992. [[#include <stdlib.h>
  993. #include <string.h>
  994. #include <stdio.h>
  995. #ifdef HAVE_STDDEF_H
  996. #include <stddef.h>
  997. #endif
  998. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  999. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1000. [tor_cv_null_is_zero=yes],
  1001. [tor_cv_null_is_zero=no],
  1002. [tor_cv_null_is_zero=cross])])
  1003. if test "$tor_cv_null_is_zero" = cross ; then
  1004. # Cross-compiling; let's hope that the target isn't raving mad.
  1005. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1006. fi
  1007. if test "$tor_cv_null_is_zero" != no; then
  1008. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1009. [Define to 1 iff memset(0) sets pointers to NULL])
  1010. fi
  1011. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1012. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1013. [[#include <stdlib.h>
  1014. #include <string.h>
  1015. #include <stdio.h>
  1016. #ifdef HAVE_STDDEF_H
  1017. #include <stddef.h>
  1018. #endif
  1019. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1020. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1021. [tor_cv_dbl0_is_zero=yes],
  1022. [tor_cv_dbl0_is_zero=no],
  1023. [tor_cv_dbl0_is_zero=cross])])
  1024. if test "$tor_cv_dbl0_is_zero" = cross ; then
  1025. # Cross-compiling; let's hope that the target isn't raving mad.
  1026. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1027. fi
  1028. if test "$tor_cv_dbl0_is_zero" != no; then
  1029. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1030. [Define to 1 iff memset(0) sets doubles to 0.0])
  1031. fi
  1032. # And what happens when we malloc zero?
  1033. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1034. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1035. [[#include <stdlib.h>
  1036. #include <string.h>
  1037. #include <stdio.h>
  1038. #ifdef HAVE_STDDEF_H
  1039. #include <stddef.h>
  1040. #endif
  1041. int main () { return malloc(0)?0:1; }]])],
  1042. [tor_cv_malloc_zero_works=yes],
  1043. [tor_cv_malloc_zero_works=no],
  1044. [tor_cv_malloc_zero_works=cross])])
  1045. if test "$tor_cv_malloc_zero_works" = cross; then
  1046. # Cross-compiling; let's hope that the target isn't raving mad.
  1047. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1048. fi
  1049. if test "$tor_cv_malloc_zero_works" = yes; then
  1050. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1051. [Define to 1 iff malloc(0) returns a pointer])
  1052. fi
  1053. # whether we seem to be in a 2s-complement world.
  1054. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1055. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1056. [[int main () { int problem = ((-99) != (~99)+1);
  1057. return problem ? 1 : 0; }]])],
  1058. [tor_cv_twos_complement=yes],
  1059. [tor_cv_twos_complement=no],
  1060. [tor_cv_twos_complement=cross])])
  1061. if test "$tor_cv_twos_complement" = cross ; then
  1062. # Cross-compiling; let's hope that the target isn't raving mad.
  1063. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1064. fi
  1065. if test "$tor_cv_twos_complement" != no ; then
  1066. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1067. [Define to 1 iff we represent negative integers with two's complement])
  1068. fi
  1069. # What does shifting a negative value do?
  1070. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1071. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1072. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1073. [tor_cv_sign_extend=yes],
  1074. [tor_cv_sign_extend=no],
  1075. [tor_cv_sign_extend=cross])])
  1076. if test "$tor_cv_sign_extend" = cross ; then
  1077. # Cross-compiling; let's hope that the target isn't raving mad.
  1078. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1079. fi
  1080. if test "$tor_cv_sign_extend" != no ; then
  1081. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1082. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1083. fi
  1084. # Whether we should use the dmalloc memory allocation debugging library.
  1085. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1086. AC_ARG_WITH(dmalloc,
  1087. [ --with-dmalloc Use debug memory allocation library. ],
  1088. [if [[ "$withval" = "yes" ]]; then
  1089. dmalloc=1
  1090. AC_MSG_RESULT(yes)
  1091. else
  1092. dmalloc=1
  1093. AC_MSG_RESULT(no)
  1094. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1095. )
  1096. if [[ $dmalloc -eq 1 ]]; then
  1097. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1098. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1099. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1100. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1101. fi
  1102. AC_ARG_WITH(tcmalloc,
  1103. [ --with-tcmalloc Use tcmalloc memory allocation library. ],
  1104. [ tcmalloc=yes ], [ tcmalloc=no ])
  1105. if test x$tcmalloc = xyes ; then
  1106. LDFLAGS="-ltcmalloc $LDFLAGS"
  1107. fi
  1108. using_custom_malloc=no
  1109. if test x$enable_openbsd_malloc = xyes ; then
  1110. using_custom_malloc=yes
  1111. fi
  1112. if test x$tcmalloc = xyes ; then
  1113. using_custom_malloc=yes
  1114. fi
  1115. if test $using_custom_malloc = no ; then
  1116. AC_CHECK_FUNCS(mallinfo)
  1117. fi
  1118. # By default, we're going to assume we don't have mlockall()
  1119. # bionic and other platforms have various broken mlockall subsystems.
  1120. # Some systems don't have a working mlockall, some aren't linkable,
  1121. # and some have it but don't declare it.
  1122. AC_CHECK_FUNCS(mlockall)
  1123. AC_CHECK_DECLS([mlockall], , , [
  1124. #ifdef HAVE_SYS_MMAN_H
  1125. #include <sys/mman.h>
  1126. #endif])
  1127. # Allow user to specify an alternate syslog facility
  1128. AC_ARG_WITH(syslog-facility,
  1129. [ --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
  1130. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1131. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1132. AC_SUBST(LOGFACILITY)
  1133. # Check if we have getresuid and getresgid
  1134. AC_CHECK_FUNCS(getresuid getresgid)
  1135. # Check for gethostbyname_r in all its glorious incompatible versions.
  1136. # (This logic is based on that in Python's configure.in)
  1137. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1138. [Define this if you have any gethostbyname_r()])
  1139. AC_CHECK_FUNC(gethostbyname_r, [
  1140. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1141. OLD_CFLAGS=$CFLAGS
  1142. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1143. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
  1144. #include <netdb.h>
  1145. ], [[
  1146. char *cp1, *cp2;
  1147. struct hostent *h1, *h2;
  1148. int i1, i2;
  1149. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1150. ]])],[
  1151. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1152. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1153. [Define this if gethostbyname_r takes 6 arguments])
  1154. AC_MSG_RESULT(6)
  1155. ], [
  1156. AC_TRY_COMPILE([
  1157. #include <netdb.h>
  1158. ], [
  1159. char *cp1, *cp2;
  1160. struct hostent *h1;
  1161. int i1, i2;
  1162. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1163. ], [
  1164. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1165. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1166. [Define this if gethostbyname_r takes 5 arguments])
  1167. AC_MSG_RESULT(5)
  1168. ], [
  1169. AC_TRY_COMPILE([
  1170. #include <netdb.h>
  1171. ], [
  1172. char *cp1;
  1173. struct hostent *h1;
  1174. struct hostent_data hd;
  1175. (void) gethostbyname_r(cp1,h1,&hd);
  1176. ], [
  1177. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1178. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1179. [Define this if gethostbyname_r takes 3 arguments])
  1180. AC_MSG_RESULT(3)
  1181. ], [
  1182. AC_MSG_RESULT(0)
  1183. ])
  1184. ])
  1185. ])
  1186. CFLAGS=$OLD_CFLAGS
  1187. ])
  1188. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1189. tor_cv_have_func_macro,
  1190. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1191. #include <stdio.h>
  1192. int main(int c, char **v) { puts(__func__); }])],
  1193. tor_cv_have_func_macro=yes,
  1194. tor_cv_have_func_macro=no))
  1195. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1196. tor_cv_have_FUNC_macro,
  1197. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1198. #include <stdio.h>
  1199. int main(int c, char **v) { puts(__FUNC__); }])],
  1200. tor_cv_have_FUNC_macro=yes,
  1201. tor_cv_have_FUNC_macro=no))
  1202. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1203. tor_cv_have_FUNCTION_macro,
  1204. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1205. #include <stdio.h>
  1206. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1207. tor_cv_have_FUNCTION_macro=yes,
  1208. tor_cv_have_FUNCTION_macro=no))
  1209. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1210. tor_cv_have_environ_declared,
  1211. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1212. /* We define _GNU_SOURCE here because it is also defined in compat.c.
  1213. * Without it environ doesn't get declared. */
  1214. #define _GNU_SOURCE
  1215. #ifdef HAVE_UNISTD_H
  1216. #include <unistd.h>
  1217. #endif
  1218. #include <stdlib.h>
  1219. int main(int c, char **v) { char **t = environ; }])],
  1220. tor_cv_have_environ_declared=yes,
  1221. tor_cv_have_environ_declared=no))
  1222. if test "$tor_cv_have_func_macro" = 'yes'; then
  1223. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1224. fi
  1225. if test "$tor_cv_have_FUNC_macro" = 'yes'; then
  1226. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1227. fi
  1228. if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
  1229. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1230. [Defined if the compiler supports __FUNCTION__])
  1231. fi
  1232. if test "$tor_cv_have_environ_declared" = 'yes'; then
  1233. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1234. [Defined if we have extern char **environ already declared])
  1235. fi
  1236. # $prefix stores the value of the --prefix command line option, or
  1237. # NONE if the option wasn't set. In the case that it wasn't set, make
  1238. # it be the default, so that we can use it to expand directories now.
  1239. if test "x$prefix" = "xNONE"; then
  1240. prefix=$ac_default_prefix
  1241. fi
  1242. # and similarly for $exec_prefix
  1243. if test "x$exec_prefix" = "xNONE"; then
  1244. exec_prefix=$prefix
  1245. fi
  1246. if test "x$BUILDDIR" = "x"; then
  1247. BUILDDIR=`pwd`
  1248. fi
  1249. AC_SUBST(BUILDDIR)
  1250. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1251. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1252. if test "x$CONFDIR" = "x"; then
  1253. CONFDIR=`eval echo $sysconfdir/tor`
  1254. fi
  1255. AC_SUBST(CONFDIR)
  1256. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1257. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1258. BINDIR=`eval echo $bindir`
  1259. AC_SUBST(BINDIR)
  1260. LOCALSTATEDIR=`eval echo $localstatedir`
  1261. AC_SUBST(LOCALSTATEDIR)
  1262. if test "$bwin32" = true; then
  1263. # Test if the linker supports the --nxcompat and --dynamicbase options
  1264. # for Windows
  1265. save_LDFLAGS="$LDFLAGS"
  1266. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1267. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1268. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1269. [AC_MSG_RESULT([yes])]
  1270. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1271. [AC_MSG_RESULT([no])]
  1272. )
  1273. LDFLAGS="$save_LDFLAGS"
  1274. fi
  1275. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1276. # than autoconf's macros like.
  1277. if test "$GCC" = yes; then
  1278. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1279. # accident waiting to happen.
  1280. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1281. else
  1282. # Autoconf sets -g -O2 by default. Override optimization level
  1283. # for non-gcc compilers
  1284. CFLAGS="$CFLAGS -O"
  1285. enable_gcc_warnings=no
  1286. enable_gcc_warnings_advisory=no
  1287. fi
  1288. # OS X Lion started deprecating the system openssl. Let's just disable
  1289. # all deprecation warnings on OS X. Also, to potentially make the binary
  1290. # a little smaller, let's enable dead_strip.
  1291. case "$host_os" in
  1292. darwin*)
  1293. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1294. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1295. esac
  1296. # Add some more warnings which we use in development but not in the
  1297. # released versions. (Some relevant gcc versions can't handle these.)
  1298. if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
  1299. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1300. #if !defined(__GNUC__) || (__GNUC__ < 4)
  1301. #error
  1302. #endif])], have_gcc4=yes, have_gcc4=no)
  1303. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1304. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
  1305. #error
  1306. #endif])], have_gcc42=yes, have_gcc42=no)
  1307. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1308. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
  1309. #error
  1310. #endif])], have_gcc43=yes, have_gcc43=no)
  1311. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1312. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
  1313. #error
  1314. #endif])], have_gcc46=yes, have_gcc46=no)
  1315. save_CFLAGS="$CFLAGS"
  1316. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1317. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
  1318. have_shorten64_flag=no)
  1319. CFLAGS="$save_CFLAGS"
  1320. case $host in
  1321. *-*-openbsd* | *-*-bitrig*)
  1322. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1323. # That's fine, except that the headers don't pass -Wredundant-decls.
  1324. # Therefore, let's disable -Wsystem-headers when we're building
  1325. # with maximal warnings on OpenBSD.
  1326. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1327. esac
  1328. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1329. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1330. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1331. CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
  1332. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1333. if test x$enable_gcc_warnings = xyes; then
  1334. CFLAGS="$CFLAGS -Werror"
  1335. fi
  1336. # Disabled, so we can use mallinfo(): -Waggregate-return
  1337. if test x$have_gcc4 = xyes ; then
  1338. # These warnings break gcc 3.3.5 and work on gcc 4.0.2
  1339. CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement -Wold-style-definition"
  1340. fi
  1341. if test x$have_gcc42 = xyes ; then
  1342. # These warnings break gcc 4.0.2 and work on gcc 4.2
  1343. # XXXX020 See if any of these work with earlier versions.
  1344. CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
  1345. # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
  1346. fi
  1347. if test x$have_gcc42 = xyes && test x$have_clang = xno; then
  1348. # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
  1349. CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
  1350. fi
  1351. if test x$have_gcc43 = xyes ; then
  1352. # These warnings break gcc 4.2 and work on gcc 4.3
  1353. # XXXX020 See if any of these work with earlier versions.
  1354. CFLAGS="$CFLAGS -Wextra -Warray-bounds"
  1355. fi
  1356. if test x$have_gcc46 = xyes ; then
  1357. # This warning was added in gcc 4.3, but it appears to generate
  1358. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1359. CFLAGS="$CFLAGS -Wlogical-op"
  1360. fi
  1361. if test x$have_shorten64_flag = xyes ; then
  1362. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1363. fi
  1364. ##This will break the world on some 64-bit architectures
  1365. # CFLAGS="$CFLAGS -Winline"
  1366. fi
  1367. if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
  1368. case "$host_os" in
  1369. darwin*)
  1370. 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-profiling.])
  1371. esac
  1372. fi
  1373. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  1374. AC_CONFIG_FILES([
  1375. Doxyfile
  1376. Makefile
  1377. contrib/dist/suse/tor.sh
  1378. contrib/operator-tools/tor.logrotate
  1379. contrib/dist/tor.sh
  1380. contrib/dist/torctl
  1381. contrib/dist/tor.service
  1382. src/config/torrc.sample
  1383. ])
  1384. if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
  1385. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  1386. for file in $regular_mans ; do
  1387. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  1388. echo "==================================";
  1389. echo;
  1390. echo "You need asciidoc installed to be able to build the manpage.";
  1391. echo "To build without manpages, use the --disable-asciidoc argument";
  1392. echo "when calling configure.";
  1393. echo;
  1394. echo "==================================";
  1395. exit 1;
  1396. fi
  1397. done
  1398. fi
  1399. AC_OUTPUT
  1400. if test -x /usr/bin/perl && test -x ./scripts/maint/updateVersions.pl ; then
  1401. ./scripts/maint/updateVersions.pl
  1402. fi