configure.ac 53 KB

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  1. dnl Copyright (c) 2001-2004, Roger Dingledine
  2. dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
  3. dnl Copyright (c) 2007-2015, The Tor Project, Inc.
  4. dnl See LICENSE for licensing information
  5. AC_INIT([tor],[0.2.6.2-alpha-dev])
  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. PKG_PROG_PKG_CONFIG
  13. if test -f /etc/redhat-release ; then
  14. if test -f /usr/kerberos/include ; then
  15. CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
  16. fi
  17. fi
  18. # Not a no-op; we want to make sure that CPPFLAGS is set before we use
  19. # the += operator on it in src/or/Makefile.am
  20. CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
  21. #XXXX020 We should make these enabled or not, before 0.2.0.x-final
  22. AC_ARG_ENABLE(buf-freelists,
  23. AS_HELP_STRING(--enable-buf-freelists, enable freelists for buffer RAM))
  24. AC_ARG_ENABLE(mempools,
  25. AS_HELP_STRING(--enable-mempools, enable mempools for relay cells))
  26. AC_ARG_ENABLE(openbsd-malloc,
  27. AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd. Linux only))
  28. AC_ARG_ENABLE(instrument-downloads,
  29. AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
  30. AC_ARG_ENABLE(static-openssl,
  31. AS_HELP_STRING(--enable-static-openssl, Link against a static openssl library. Requires --with-openssl-dir))
  32. AC_ARG_ENABLE(static-libevent,
  33. AS_HELP_STRING(--enable-static-libevent, Link against a static libevent library. Requires --with-libevent-dir))
  34. AC_ARG_ENABLE(static-zlib,
  35. AS_HELP_STRING(--enable-static-zlib, Link against a static zlib library. Requires --with-zlib-dir))
  36. AC_ARG_ENABLE(static-tor,
  37. AS_HELP_STRING(--enable-static-tor, Create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir))
  38. AC_ARG_ENABLE(unittests,
  39. AS_HELP_STRING(--disable-unittests, [Don't build unit tests for Tor. Risky!]))
  40. AC_ARG_ENABLE(coverage,
  41. AS_HELP_STRING(--enable-coverage, [Enable coverage support in the unit-test build]))
  42. AC_ARG_ENABLE(system-torrc,
  43. AS_HELP_STRING(--disable-system-torrc, [Don't look for a system-wide torrc file]))
  44. AM_CONDITIONAL(UNITTESTS_ENABLED, test x$enable_unittests != xno)
  45. AM_CONDITIONAL(COVERAGE_ENABLED, test x$enable_coverage = xyes)
  46. if test "$enable_static_tor" = "yes"; then
  47. enable_static_libevent="yes";
  48. enable_static_openssl="yes";
  49. enable_static_zlib="yes";
  50. CFLAGS="$CFLAGS -static"
  51. fi
  52. if test "$enable_system_torrc" = "no"; then
  53. AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
  54. [Defined if we're not going to look for a torrc in SYSCONF])
  55. fi
  56. if test x$enable_buf_freelists = xyes; then
  57. AC_DEFINE(ENABLE_BUF_FREELISTS, 1,
  58. [Defined if we try to use freelists for buffer RAM chunks])
  59. fi
  60. AM_CONDITIONAL(USE_MEMPOOLS, test x$enable_mempools = xyes)
  61. if test x$enable_mempools = xyes; then
  62. AC_DEFINE(ENABLE_MEMPOOLS, 1,
  63. [Defined if we try to use mempools for cells being relayed])
  64. fi
  65. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
  66. if test x$enable_instrument_downloads = xyes; then
  67. AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
  68. [Defined if we want to keep track of how much of each kind of resource we download.])
  69. fi
  70. AC_ARG_ENABLE(transparent,
  71. AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
  72. [case "${enableval}" in
  73. yes) transparent=true ;;
  74. no) transparent=false ;;
  75. *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
  76. esac], [transparent=true])
  77. AC_ARG_ENABLE(asciidoc,
  78. AS_HELP_STRING(--disable-asciidoc, don't use asciidoc (disables building of manpages)),
  79. [case "${enableval}" in
  80. yes) asciidoc=true ;;
  81. no) asciidoc=false ;;
  82. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  83. esac], [asciidoc=true])
  84. # By default, we're not ready to ship a NAT-PMP aware Tor
  85. AC_ARG_ENABLE(nat-pmp,
  86. AS_HELP_STRING(--enable-nat-pmp, enable NAT-PMP support),
  87. [case "${enableval}" in
  88. yes) natpmp=true ;;
  89. no) natpmp=false ;;
  90. * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
  91. esac], [natpmp=false])
  92. # By default, we're not ready to ship a UPnP aware Tor
  93. AC_ARG_ENABLE(upnp,
  94. AS_HELP_STRING(--enable-upnp, enable UPnP support),
  95. [case "${enableval}" in
  96. yes) upnp=true ;;
  97. no) upnp=false ;;
  98. * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
  99. esac], [upnp=false])
  100. # systemd notify support
  101. AC_ARG_ENABLE(systemd,
  102. AS_HELP_STRING(--enable-systemd, enable systemd notification support),
  103. [case "${enableval}" in
  104. yes) systemd=true ;;
  105. no) systemd=false ;;
  106. * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
  107. esac], [systemd=auto])
  108. # systemd support
  109. if test x$enable_systemd = xno ; then
  110. have_systemd=no;
  111. else
  112. PKG_CHECK_MODULES(SYSTEMD,
  113. [libsystemd-daemon],
  114. have_systemd=yes,
  115. have_systemd=no)
  116. if test x$have_systemd=xno; then
  117. AC_MSG_NOTICE([Okay, checking for systemd a different way...])
  118. PKG_CHECK_MODULES(SYSTEMD,
  119. [libsystemd],
  120. have_systemd=yes,
  121. have_systemd=no)
  122. fi
  123. fi
  124. if test x$have_systemd = xyes; then
  125. AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
  126. TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
  127. TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
  128. PKG_CHECK_MODULES(SYSTEMD209, [systemd >= 209],
  129. [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
  130. fi
  131. AC_SUBST(TOR_SYSTEMD_CFLAGS)
  132. AC_SUBST(TOR_SYSTEMD_LIBS)
  133. if test x$enable_systemd = xyes -a x$have_systemd != xyes ; then
  134. AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
  135. fi
  136. AC_ARG_ENABLE(threads,
  137. AS_HELP_STRING(--disable-threads, disable multi-threading support))
  138. if test x$enable_threads = x; then
  139. case $host in
  140. *-*-solaris* )
  141. # Don't try multithreading on solaris -- cpuworkers seem to lock.
  142. AC_MSG_NOTICE([You are running Solaris; Sometimes threading makes
  143. cpu workers lock up here, so I will disable threads.])
  144. enable_threads="no";;
  145. *)
  146. enable_threads="yes";;
  147. esac
  148. fi
  149. case $host in
  150. *-*-solaris* )
  151. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  152. ;;
  153. esac
  154. AC_ARG_ENABLE(gcc-warnings,
  155. AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
  156. AC_ARG_ENABLE(gcc-warnings-advisory,
  157. AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
  158. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  159. AC_ARG_ENABLE(gcc-hardening,
  160. AS_HELP_STRING(--disable-gcc-hardening, disable compiler security checks))
  161. AC_ARG_ENABLE(expensive-hardening,
  162. AS_HELP_STRING(--enable-expensive-hardening, enable more expensive compiler hardening; makes Tor slower))
  163. dnl Linker hardening options
  164. dnl Currently these options are ELF specific - you can't use this with MacOSX
  165. AC_ARG_ENABLE(linker-hardening,
  166. AS_HELP_STRING(--disable-linker-hardening, disable linker security fixups))
  167. AC_ARG_ENABLE(local-appdata,
  168. AS_HELP_STRING(--enable-local-appdata, default to host local application data paths on Windows))
  169. if test "$enable_local_appdata" = "yes"; then
  170. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  171. [Defined if we default to host local appdata paths on Windows])
  172. fi
  173. # Tor2web mode flag
  174. AC_ARG_ENABLE(tor2web-mode,
  175. AS_HELP_STRING(--enable-tor2web-mode, support tor2web non-anonymous mode),
  176. [if test x$enableval = xyes; then
  177. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  178. fi])
  179. AC_ARG_ENABLE(bufferevents,
  180. AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))
  181. AC_ARG_ENABLE(tool-name-check,
  182. AS_HELP_STRING(--disable-tool-name-check, check for sanely named toolchain when cross-compiling))
  183. AC_ARG_ENABLE(seccomp,
  184. AS_HELP_STRING(--disable-seccomp, do not attempt to use libseccomp))
  185. AC_ARG_ENABLE(libscrypt,
  186. AS_HELP_STRING(--disable-libscrypt, do not attempt to use libscrypt))
  187. dnl check for the correct "ar" when cross-compiling
  188. AN_MAKEVAR([AR], [AC_PROG_AR])
  189. AN_PROGRAM([ar], [AC_PROG_AR])
  190. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
  191. AC_PROG_AR
  192. dnl Check whether the above macro has settled for a simply named tool even
  193. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  194. dnl because that will find any cc on the system, not only the cross-compiler,
  195. dnl and then verify that a binary built with this compiler runs on the
  196. dnl build system. It will then come to the false conclusion that we're not
  197. dnl cross-compiling.
  198. if test x$enable_tool_name_check != xno; then
  199. if test x$ac_tool_warned = xyes; then
  200. 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.)])
  201. elif test "x$ac_ct_AR" != x -a x$cross_compiling = xmaybe; then
  202. 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.)])
  203. fi
  204. fi
  205. AC_PROG_CC
  206. AC_PROG_CPP
  207. AC_PROG_MAKE_SET
  208. AC_PROG_RANLIB
  209. dnl autoconf 2.59 appears not to support AC_PROG_SED
  210. AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
  211. dnl check for asciidoc and a2x
  212. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  213. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  214. AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
  215. AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
  216. AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
  217. AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
  218. AM_PROG_CC_C_O
  219. AC_PROG_CC_C99
  220. AC_ARG_VAR(PYTHON)
  221. AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
  222. if test "x$PYTHON" = "x"; then
  223. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  224. fi
  225. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  226. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  227. AC_C_FLEXIBLE_ARRAY_MEMBER
  228. ], [
  229. dnl Maybe we've got an old autoconf...
  230. AC_CACHE_CHECK([for flexible array members],
  231. tor_cv_c_flexarray,
  232. [AC_COMPILE_IFELSE(
  233. AC_LANG_PROGRAM([
  234. struct abc { int a; char b[]; };
  235. ], [
  236. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  237. def->b[0] = 33;
  238. ]),
  239. [tor_cv_c_flexarray=yes],
  240. [tor_cv_c_flexarray=no])])
  241. if test $tor_cv_flexarray = yes ; then
  242. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  243. else
  244. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  245. fi
  246. ])
  247. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  248. tor_cv_c_c99_decl,
  249. [AC_COMPILE_IFELSE(
  250. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  251. [tor_cv_c_c99_decl=yes],
  252. [tor_cv_c_c99_decl=no] )])
  253. if test "$tor_cv_c_c99_decl" != "yes"; then
  254. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  255. fi
  256. AC_CACHE_CHECK([for working C99 designated initializers],
  257. tor_cv_c_c99_designated_init,
  258. [AC_COMPILE_IFELSE(
  259. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  260. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  261. [tor_cv_c_c99_designated_init=yes],
  262. [tor_cv_c_c99_designated_init=no] )])
  263. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  264. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  265. fi
  266. AC_PATH_PROG([SHA1SUM], [sha1sum], none)
  267. AC_PATH_PROG([OPENSSL], [openssl], none)
  268. TORUSER=_tor
  269. AC_ARG_WITH(tor-user,
  270. [ --with-tor-user=NAME Specify username for tor daemon ],
  271. [
  272. TORUSER=$withval
  273. ]
  274. )
  275. AC_SUBST(TORUSER)
  276. TORGROUP=_tor
  277. AC_ARG_WITH(tor-group,
  278. [ --with-tor-group=NAME Specify group name for tor daemon ],
  279. [
  280. TORGROUP=$withval
  281. ]
  282. )
  283. AC_SUBST(TORGROUP)
  284. dnl If _WIN32 is defined and non-zero, we are building for win32
  285. AC_MSG_CHECKING([for win32])
  286. AC_RUN_IFELSE([AC_LANG_SOURCE([
  287. int main(int c, char **v) {
  288. #ifdef _WIN32
  289. #if _WIN32
  290. return 0;
  291. #else
  292. return 1;
  293. #endif
  294. #else
  295. return 2;
  296. #endif
  297. }])],
  298. bwin32=true; AC_MSG_RESULT([yes]),
  299. bwin32=false; AC_MSG_RESULT([no]),
  300. bwin32=cross; AC_MSG_RESULT([cross])
  301. )
  302. if test "$bwin32" = cross; then
  303. AC_MSG_CHECKING([for win32 (cross)])
  304. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  305. #ifdef _WIN32
  306. int main(int c, char **v) {return 0;}
  307. #else
  308. #error
  309. int main(int c, char **v) {return x(y);}
  310. #endif
  311. ])],
  312. bwin32=true; AC_MSG_RESULT([yes]),
  313. bwin32=false; AC_MSG_RESULT([no]))
  314. fi
  315. AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
  316. dnl Enable C99 when compiling with MIPSpro
  317. AC_MSG_CHECKING([for MIPSpro compiler])
  318. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  319. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  320. #error
  321. return x(y);
  322. #endif
  323. ])],
  324. bmipspro=false; AC_MSG_RESULT(no),
  325. bmipspro=true; AC_MSG_RESULT(yes))
  326. if test "$bmipspro" = true; then
  327. CFLAGS="$CFLAGS -c99"
  328. fi
  329. AC_C_BIGENDIAN
  330. AC_SEARCH_LIBS(socket, [socket network])
  331. AC_SEARCH_LIBS(gethostbyname, [nsl])
  332. AC_SEARCH_LIBS(dlopen, [dl])
  333. AC_SEARCH_LIBS(inet_aton, [resolv])
  334. saved_LIBS="$LIBS"
  335. AC_SEARCH_LIBS([clock_gettime], [rt])
  336. if test "$LIBS" != "$saved_LIBS"; then
  337. # Looks like we need -lrt for clock_gettime().
  338. have_rt=yes
  339. fi
  340. AC_SEARCH_LIBS(pthread_create, [pthread])
  341. AC_SEARCH_LIBS(pthread_detach, [pthread])
  342. AM_CONDITIONAL(THREADS_WIN32, test "$enable_threads" = "yes" && test "$bwin32" = "true")
  343. AM_CONDITIONAL(THREADS_PTHREADS, test "$enable_threads" = "yes" && test "$bwin32" = "false")
  344. AM_CONDITIONAL(THREADS_NONE, test "$enable_threads" != "yes")
  345. dnl -------------------------------------------------------------------
  346. dnl Check for functions before libevent, since libevent-1.2 apparently
  347. dnl exports strlcpy without defining it in a header.
  348. AC_CHECK_FUNCS(
  349. _NSGetEnviron \
  350. accept4 \
  351. backtrace \
  352. backtrace_symbols_fd \
  353. clock_gettime \
  354. eventfd \
  355. flock \
  356. ftime \
  357. getaddrinfo \
  358. getifaddrs \
  359. getrlimit \
  360. gettimeofday \
  361. gmtime_r \
  362. inet_aton \
  363. ioctl \
  364. issetugid \
  365. llround \
  366. localtime_r \
  367. lround \
  368. memmem \
  369. pipe \
  370. pipe2 \
  371. prctl \
  372. rint \
  373. sigaction \
  374. socketpair \
  375. strlcat \
  376. strlcpy \
  377. strnlen \
  378. strptime \
  379. strtok_r \
  380. strtoull \
  381. sysconf \
  382. sysctl \
  383. uname \
  384. usleep \
  385. vasprintf \
  386. _vscprintf
  387. )
  388. if test "$bwin32" != true; then
  389. AC_CHECK_HEADERS(pthread.h)
  390. AC_CHECK_FUNCS(pthread_create)
  391. fi
  392. dnl ------------------------------------------------------
  393. dnl Where do you live, libevent? And how do we call you?
  394. if test "$bwin32" = true; then
  395. TOR_LIB_WS32=-lws2_32
  396. TOR_LIB_IPHLPAPI=-liphlpapi
  397. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  398. # think it's actually necessary.
  399. TOR_LIB_GDI=-lgdi32
  400. else
  401. TOR_LIB_WS32=
  402. TOR_LIB_GDI=
  403. fi
  404. AC_SUBST(TOR_LIB_WS32)
  405. AC_SUBST(TOR_LIB_GDI)
  406. AC_SUBST(TOR_LIB_IPHLPAPI)
  407. dnl We need to do this before we try our disgusting hack below.
  408. AC_CHECK_HEADERS([sys/types.h])
  409. dnl This is a disgusting hack so we safely include older libevent headers.
  410. AC_CHECK_TYPE(u_int64_t, unsigned long long)
  411. AC_CHECK_TYPE(u_int32_t, unsigned long)
  412. AC_CHECK_TYPE(u_int16_t, unsigned short)
  413. AC_CHECK_TYPE(u_int8_t, unsigned char)
  414. tor_libevent_pkg_redhat="libevent"
  415. tor_libevent_pkg_debian="libevent-dev"
  416. tor_libevent_devpkg_redhat="libevent-devel"
  417. tor_libevent_devpkg_debian="libevent-dev"
  418. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  419. dnl linking for static builds.
  420. STATIC_LIBEVENT_FLAGS=""
  421. if test "$enable_static_libevent" = "yes"; then
  422. if test "$have_rt" = yes; then
  423. STATIC_LIBEVENT_FLAGS=" -lrt "
  424. fi
  425. fi
  426. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  427. #ifdef _WIN32
  428. #include <winsock2.h>
  429. #endif
  430. #include <stdlib.h>
  431. #include <sys/time.h>
  432. #include <sys/types.h>
  433. #include <event.h>], [
  434. #ifdef _WIN32
  435. #include <winsock2.h>
  436. #endif
  437. void exit(int); void *event_init(void);],
  438. [
  439. #ifdef _WIN32
  440. {WSADATA d; WSAStartup(0x101,&d); }
  441. #endif
  442. event_init(); exit(0);
  443. ], [--with-libevent-dir], [/opt/libevent])
  444. dnl Now check for particular libevent functions.
  445. save_LIBS="$LIBS"
  446. save_LDFLAGS="$LDFLAGS"
  447. save_CPPFLAGS="$CPPFLAGS"
  448. LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
  449. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  450. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  451. AC_CHECK_FUNCS([event_get_version \
  452. event_get_version_number \
  453. event_get_method \
  454. event_set_log_callback \
  455. evutil_secure_rng_set_urandom_device_file \
  456. evutil_secure_rng_init \
  457. event_base_loopexit])
  458. AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
  459. [#include <event.h>
  460. ])
  461. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  462. LIBS="$save_LIBS"
  463. LDFLAGS="$save_LDFLAGS"
  464. CPPFLAGS="$save_CPPFLAGS"
  465. AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
  466. if test "$enable_static_libevent" = "yes"; then
  467. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  468. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  469. else
  470. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  471. fi
  472. else
  473. TOR_LIBEVENT_LIBS="-levent"
  474. fi
  475. dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
  476. dnl we can do much better.
  477. if test "$enable_bufferevents" = "yes" ; then
  478. if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
  479. AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
  480. else
  481. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  482. # Check for the right version. First see if version detection works.
  483. AC_MSG_CHECKING([whether we can detect the Libevent version])
  484. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  485. #include <event2/event.h>
  486. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
  487. #error
  488. int x = y(zz);
  489. #else
  490. int x = 1;
  491. #endif
  492. ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
  493. [event_version_number_works=no; AC_MSG_RESULT([no])])
  494. if test "$event_version_number_works" != 'yes'; then
  495. AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
  496. else
  497. AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
  498. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  499. #include <event2/event.h>
  500. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
  501. #error
  502. int x = y(zz);
  503. #else
  504. int x = 1;
  505. #endif
  506. ])], [ AC_MSG_RESULT([yes]) ],
  507. [ AC_MSG_RESULT([no])
  508. AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
  509. fi
  510. fi
  511. fi
  512. LIBS="$save_LIBS"
  513. LDFLAGS="$save_LDFLAGS"
  514. CPPFLAGS="$save_CPPFLAGS"
  515. AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
  516. if test "$enable_bufferevents" = "yes"; then
  517. AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
  518. if test "$enable_static_libevent" = "yes"; then
  519. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
  520. else
  521. TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
  522. fi
  523. fi
  524. AC_SUBST(TOR_LIBEVENT_LIBS)
  525. dnl ------------------------------------------------------
  526. dnl Where do you live, libm?
  527. dnl On some platforms (Haiku/BeOS) the math library is
  528. dnl part of libroot. In which case don't link against lm
  529. TOR_LIB_MATH=""
  530. save_LIBS="$LIBS"
  531. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  532. if test "$ac_cv_search_pow" != "none required"; then
  533. TOR_LIB_MATH="$ac_cv_search_pow"
  534. fi
  535. LIBS="$save_LIBS"
  536. AC_SUBST(TOR_LIB_MATH)
  537. dnl ------------------------------------------------------
  538. dnl Where do you live, openssl? And how do we call you?
  539. tor_openssl_pkg_redhat="openssl"
  540. tor_openssl_pkg_debian="libssl-dev"
  541. tor_openssl_devpkg_redhat="openssl-devel"
  542. tor_openssl_devpkg_debian="libssl-dev"
  543. ALT_openssl_WITHVAL=""
  544. AC_ARG_WITH(ssl-dir,
  545. [ --with-ssl-dir=PATH Obsolete alias for --with-openssl-dir ],
  546. [
  547. if test "x$withval" != xno && test "x$withval" != "x" ; then
  548. ALT_openssl_WITHVAL="$withval"
  549. fi
  550. ])
  551. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
  552. [#include <openssl/rand.h>],
  553. [void RAND_add(const void *buf, int num, double entropy);],
  554. [RAND_add((void*)0,0,0); exit(0);], [],
  555. [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
  556. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  557. if test "$enable_static_openssl" = "yes"; then
  558. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  559. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  560. else
  561. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  562. fi
  563. else
  564. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  565. fi
  566. AC_SUBST(TOR_OPENSSL_LIBS)
  567. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  568. [#include <openssl/ssl.h>
  569. ])
  570. dnl ------------------------------------------------------
  571. dnl Where do you live, zlib? And how do we call you?
  572. tor_zlib_pkg_redhat="zlib"
  573. tor_zlib_pkg_debian="zlib1g"
  574. tor_zlib_devpkg_redhat="zlib-devel"
  575. tor_zlib_devpkg_debian="zlib1g-dev"
  576. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  577. [#include <zlib.h>],
  578. [const char * zlibVersion(void);],
  579. [zlibVersion(); exit(0);], [--with-zlib-dir],
  580. [/opt/zlib])
  581. if test "$enable_static_zlib" = "yes"; then
  582. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  583. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  584. using --enable-static-zlib")
  585. else
  586. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  587. fi
  588. else
  589. TOR_ZLIB_LIBS="-lz"
  590. fi
  591. AC_SUBST(TOR_ZLIB_LIBS)
  592. dnl ---------------------------------------------------------------------
  593. dnl Now that we know about our major libraries, we can check for compiler
  594. dnl and linker hardening options. We need to do this with the libraries known,
  595. dnl since sometimes the linker will like an option but not be willing to
  596. dnl use it with a build of a library.
  597. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  598. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
  599. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  600. #if !defined(__clang__)
  601. #error
  602. #endif])], have_clang=yes, have_clang=no)
  603. if test x$enable_gcc_hardening != xno; then
  604. CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
  605. if test x$have_clang = xyes; then
  606. TOR_CHECK_CFLAGS(-Qunused-arguments)
  607. fi
  608. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  609. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  610. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  611. m4_ifdef([AS_VAR_IF],[
  612. AS_VAR_IF(can_compile, [yes],
  613. AS_VAR_IF(can_link, [yes],
  614. [],
  615. 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.)]))
  616. )])
  617. AS_VAR_POPDEF([can_link])
  618. AS_VAR_POPDEF([can_compile])
  619. TOR_CHECK_CFLAGS(-Wstack-protector)
  620. TOR_CHECK_CFLAGS(-fwrapv)
  621. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  622. if test "$bwin32" = "false"; then
  623. TOR_CHECK_CFLAGS(-fPIE)
  624. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  625. fi
  626. fi
  627. if test x$enable_expensive_hardening = xyes ; then
  628. TOR_CHECK_CFLAGS([-fsanitize=address])
  629. TOR_CHECK_CFLAGS([-fsanitize=undefined])
  630. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  631. fi
  632. if test x$enable_linker_hardening != xno; then
  633. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  634. fi
  635. # For backtrace support
  636. TOR_CHECK_LDFLAGS(-rdynamic)
  637. dnl ------------------------------------------------------
  638. dnl Now see if we have a -fomit-frame-pointer compiler option.
  639. saved_CFLAGS="$CFLAGS"
  640. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  641. F_OMIT_FRAME_POINTER=''
  642. if test "$saved_CFLAGS" != "$CFLAGS"; then
  643. if test x$enable_expensive_hardening != xyes ; then
  644. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  645. fi
  646. fi
  647. CFLAGS="$saved_CFLAGS"
  648. AC_SUBST(F_OMIT_FRAME_POINTER)
  649. dnl ------------------------------------------------------
  650. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  651. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  652. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  653. dnl code will work.
  654. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  655. dnl ------------------------------------------------------
  656. dnl Where do you live, libnatpmp? And how do we call you?
  657. dnl There are no packages for Debian or Redhat as of this patch
  658. if test "$natpmp" = "true"; then
  659. AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
  660. TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  661. [#include <natpmp.h>],
  662. [#ifdef _WIN32
  663. #define STATICLIB
  664. #endif
  665. #include <natpmp.h>],
  666. [ int r;
  667. natpmp_t natpmp;
  668. natpmpresp_t response;
  669. r = initnatpmp(&natpmp, 0, 0);],
  670. [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
  671. exit(0);],
  672. [--with-libnatpmp-dir],
  673. [/usr/lib/])
  674. fi
  675. dnl ------------------------------------------------------
  676. dnl Where do you live, libminiupnpc? And how do we call you?
  677. dnl There are no packages for Debian or Redhat as of this patch
  678. if test "$upnp" = "true"; then
  679. AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
  680. dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
  681. dnl to see if we have miniupnpc-1.5 or -1.6
  682. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
  683. [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])
  684. if test "$miniupnpc15" = "true" ; then
  685. AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
  686. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  687. [#include <miniupnpc/miniwget.h>
  688. #include <miniupnpc/miniupnpc.h>
  689. #include <miniupnpc/upnpcommands.h>],
  690. [void upnpDiscover(int delay, const char * multicastif,
  691. const char * minissdpdsock, int sameport);],
  692. [upnpDiscover(1, 0, 0, 0); exit(0);],
  693. [--with-libminiupnpc-dir],
  694. [/usr/lib/])
  695. else
  696. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  697. [#include <miniupnpc/miniwget.h>
  698. #include <miniupnpc/miniupnpc.h>
  699. #include <miniupnpc/upnpcommands.h>],
  700. [void upnpDiscover(int delay, const char * multicastif,
  701. const char * minissdpdsock, int sameport, int ipv6, int * error);],
  702. [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
  703. [--with-libminiupnpc-dir],
  704. [/usr/lib/])
  705. fi
  706. fi
  707. dnl ============================================================
  708. dnl Check for libseccomp
  709. if test "x$enable_seccomp" != "xno"; then
  710. AC_CHECK_HEADERS([seccomp.h])
  711. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  712. fi
  713. dnl ============================================================
  714. dnl Check for libscrypt
  715. if test "x$enable_libscrypt" != "xno"; then
  716. AC_CHECK_HEADERS([libscrypt.h])
  717. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  718. fi
  719. dnl ============================================================
  720. dnl We need an implementation of curve25519.
  721. dnl set these defaults.
  722. build_curve25519_donna=no
  723. build_curve25519_donna_c64=no
  724. use_curve25519_donna=no
  725. use_curve25519_nacl=no
  726. CURVE25519_LIBS=
  727. dnl The best choice is using curve25519-donna-c64, but that requires
  728. dnl that we
  729. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  730. tor_cv_can_use_curve25519_donna_c64,
  731. [AC_RUN_IFELSE(
  732. [AC_LANG_PROGRAM([dnl
  733. #include <stdint.h>
  734. typedef unsigned uint128_t __attribute__((mode(TI)));
  735. int func(uint64_t a, uint64_t b) {
  736. uint128_t c = ((uint128_t)a) * b;
  737. int ok = ((uint64_t)(c>>96)) == 522859 &&
  738. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  739. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  740. (((uint64_t)(c))&0xffffffffL) == 0;
  741. return ok;
  742. }
  743. ], [dnl
  744. int ok = func( ((uint64_t)2000000000) * 1000000000,
  745. ((uint64_t)1234567890) << 24);
  746. return !ok;
  747. ])],
  748. [tor_cv_can_use_curve25519_donna_c64=yes],
  749. [tor_cv_can_use_curve25519_donna_c64=no],
  750. [AC_LINK_IFELSE(
  751. [AC_LANG_PROGRAM([dnl
  752. #include <stdint.h>
  753. typedef unsigned uint128_t __attribute__((mode(TI)));
  754. int func(uint64_t a, uint64_t b) {
  755. uint128_t c = ((uint128_t)a) * b;
  756. int ok = ((uint64_t)(c>>96)) == 522859 &&
  757. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  758. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  759. (((uint64_t)(c))&0xffffffffL) == 0;
  760. return ok;
  761. }
  762. ], [dnl
  763. int ok = func( ((uint64_t)2000000000) * 1000000000,
  764. ((uint64_t)1234567890) << 24);
  765. return !ok;
  766. ])],
  767. [tor_cv_can_use_curve25519_donna_c64=cross],
  768. [tor_cv_can_use_curve25519_donna_c64=no])])])
  769. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  770. nacl/crypto_scalarmult_curve25519.h])
  771. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  772. tor_cv_can_use_curve25519_nacl,
  773. [tor_saved_LIBS="$LIBS"
  774. LIBS="$LIBS -lnacl"
  775. AC_LINK_IFELSE(
  776. [AC_LANG_PROGRAM([dnl
  777. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  778. #include <crypto_scalarmult_curve25519.h>
  779. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  780. #include <nacl/crypto_scalarmult_curve25519.h>
  781. #endif
  782. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  783. #error Hey, this is the reference implementation! That's not fast.
  784. #endif
  785. ], [
  786. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  787. ])], [tor_cv_can_use_curve25519_nacl=yes],
  788. [tor_cv_can_use_curve25519_nacl=no])
  789. LIBS="$tor_saved_LIBS" ])
  790. dnl Okay, now we need to figure out which one to actually use. Fall back
  791. dnl to curve25519-donna.c
  792. if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
  793. build_curve25519_donna_c64=yes
  794. use_curve25519_donna=yes
  795. elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
  796. use_curve25519_nacl=yes
  797. CURVE25519_LIBS=-lnacl
  798. else
  799. build_curve25519_donna=yes
  800. use_curve25519_donna=yes
  801. fi
  802. if test x$use_curve25519_donna = xyes; then
  803. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  804. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  805. fi
  806. if test x$use_curve25519_nacl = xyes; then
  807. AC_DEFINE(USE_CURVE25519_NACL, 1,
  808. [Defined if we should use a curve25519 from nacl])
  809. fi
  810. AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
  811. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
  812. AC_SUBST(CURVE25519_LIBS)
  813. dnl Make sure to enable support for large off_t if available.
  814. AC_SYS_LARGEFILE
  815. AC_CHECK_HEADERS(
  816. assert.h \
  817. errno.h \
  818. fcntl.h \
  819. signal.h \
  820. string.h \
  821. sys/fcntl.h \
  822. sys/stat.h \
  823. sys/time.h \
  824. sys/types.h \
  825. time.h \
  826. unistd.h
  827. , , 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.))
  828. dnl These headers are not essential
  829. AC_CHECK_HEADERS(
  830. arpa/inet.h \
  831. crt_externs.h \
  832. execinfo.h \
  833. grp.h \
  834. ifaddrs.h \
  835. inttypes.h \
  836. limits.h \
  837. linux/types.h \
  838. machine/limits.h \
  839. malloc.h \
  840. malloc/malloc.h \
  841. malloc_np.h \
  842. netdb.h \
  843. netinet/in.h \
  844. netinet/in6.h \
  845. pwd.h \
  846. stdint.h \
  847. sys/eventfd.h \
  848. sys/file.h \
  849. sys/ioctl.h \
  850. sys/limits.h \
  851. sys/mman.h \
  852. sys/param.h \
  853. sys/prctl.h \
  854. sys/resource.h \
  855. sys/select.h \
  856. sys/socket.h \
  857. sys/sysctl.h \
  858. sys/syslimits.h \
  859. sys/time.h \
  860. sys/types.h \
  861. sys/un.h \
  862. sys/utime.h \
  863. sys/wait.h \
  864. syslog.h \
  865. utime.h
  866. )
  867. AC_CHECK_HEADERS(sys/param.h)
  868. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  869. [#ifdef HAVE_SYS_TYPES_H
  870. #include <sys/types.h>
  871. #endif
  872. #ifdef HAVE_SYS_SOCKET_H
  873. #include <sys/socket.h>
  874. #endif])
  875. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  876. [#ifdef HAVE_SYS_TYPES_H
  877. #include <sys/types.h>
  878. #endif
  879. #ifdef HAVE_SYS_SOCKET_H
  880. #include <sys/socket.h>
  881. #endif
  882. #ifdef HAVE_NET_IF_H
  883. #include <net/if.h>
  884. #endif])
  885. AC_CHECK_HEADERS(linux/if.h,[],[],
  886. [
  887. #ifdef HAVE_SYS_SOCKET_H
  888. #include <sys/socket.h>
  889. #endif
  890. ])
  891. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  892. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  893. [#ifdef HAVE_SYS_TYPES_H
  894. #include <sys/types.h>
  895. #endif
  896. #ifdef HAVE_SYS_SOCKET_H
  897. #include <sys/socket.h>
  898. #endif
  899. #ifdef HAVE_LIMITS_H
  900. #include <limits.h>
  901. #endif
  902. #ifdef HAVE_LINUX_TYPES_H
  903. #include <linux/types.h>
  904. #endif
  905. #ifdef HAVE_NETINET_IN6_H
  906. #include <netinet/in6.h>
  907. #endif
  908. #ifdef HAVE_NETINET_IN_H
  909. #include <netinet/in.h>
  910. #endif])
  911. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  912. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  913. [#ifdef HAVE_SYS_TYPES_H
  914. #include <sys/types.h>
  915. #endif
  916. #ifdef HAVE_SYS_SOCKET_H
  917. #include <sys/socket.h>
  918. #endif
  919. #ifdef HAVE_LIMITS_H
  920. #include <limits.h>
  921. #endif
  922. #ifdef HAVE_LINUX_TYPES_H
  923. #include <linux/types.h>
  924. #endif
  925. #ifdef HAVE_NETINET_IN6_H
  926. #include <netinet/in6.h>
  927. #endif
  928. #ifdef HAVE_NETINET_IN_H
  929. #include <netinet/in.h>
  930. #endif
  931. #ifdef HAVE_LINUX_IF_H
  932. #include <linux/if.h>
  933. #endif])
  934. if test x$transparent = xtrue ; then
  935. transparent_ok=0
  936. if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
  937. transparent_ok=1
  938. fi
  939. if test x$linux_netfilter_ipv4 = x1 ; then
  940. transparent_ok=1
  941. fi
  942. if test x$linux_netfilter_ipv6_ip6_tables = x1 ; then
  943. transparent_ok=1
  944. fi
  945. if test x$transparent_ok = x1 ; then
  946. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  947. case $host in
  948. *-*-openbsd* | *-*-bitrig*)
  949. AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
  950. esac
  951. else
  952. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  953. fi
  954. fi
  955. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  956. [#ifdef HAVE_SYS_TYPES_H
  957. #include <sys/types.h>
  958. #endif
  959. #ifdef HAVE_SYS_TIME_H
  960. #include <sys/time.h>
  961. #endif])
  962. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  963. dnl Watch out.
  964. AC_CHECK_SIZEOF(int8_t)
  965. AC_CHECK_SIZEOF(int16_t)
  966. AC_CHECK_SIZEOF(int32_t)
  967. AC_CHECK_SIZEOF(int64_t)
  968. AC_CHECK_SIZEOF(uint8_t)
  969. AC_CHECK_SIZEOF(uint16_t)
  970. AC_CHECK_SIZEOF(uint32_t)
  971. AC_CHECK_SIZEOF(uint64_t)
  972. AC_CHECK_SIZEOF(intptr_t)
  973. AC_CHECK_SIZEOF(uintptr_t)
  974. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  975. AC_CHECK_SIZEOF(char)
  976. AC_CHECK_SIZEOF(short)
  977. AC_CHECK_SIZEOF(int)
  978. AC_CHECK_SIZEOF(long)
  979. AC_CHECK_SIZEOF(long long)
  980. AC_CHECK_SIZEOF(__int64)
  981. AC_CHECK_SIZEOF(void *)
  982. AC_CHECK_SIZEOF(time_t)
  983. AC_CHECK_SIZEOF(size_t)
  984. AC_CHECK_SIZEOF(pid_t)
  985. AC_CHECK_TYPES([uint, u_char, ssize_t])
  986. AC_PC_FROM_UCONTEXT([/bin/true])
  987. dnl used to include sockaddr_storage, but everybody has that.
  988. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  989. [#ifdef HAVE_SYS_TYPES_H
  990. #include <sys/types.h>
  991. #endif
  992. #ifdef HAVE_NETINET_IN_H
  993. #include <netinet/in.h>
  994. #endif
  995. #ifdef HAVE_NETINET_IN6_H
  996. #include <netinet/in6.h>
  997. #endif
  998. #ifdef HAVE_SYS_SOCKET_H
  999. #include <sys/socket.h>
  1000. #endif
  1001. #ifdef _WIN32
  1002. #define _WIN32_WINNT 0x0501
  1003. #define WIN32_LEAN_AND_MEAN
  1004. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  1005. #include <winsock.h>
  1006. #else
  1007. #include <winsock2.h>
  1008. #include <ws2tcpip.h>
  1009. #endif
  1010. #endif
  1011. ])
  1012. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1013. [#ifdef HAVE_SYS_TYPES_H
  1014. #include <sys/types.h>
  1015. #endif
  1016. #ifdef HAVE_NETINET_IN_H
  1017. #include <netinet/in.h>
  1018. #endif
  1019. #ifdef HAVE_NETINET_IN6_H
  1020. #include <netinet/in6.h>
  1021. #endif
  1022. #ifdef HAVE_SYS_SOCKET_H
  1023. #include <sys/socket.h>
  1024. #endif
  1025. #ifdef _WIN32
  1026. #define _WIN32_WINNT 0x0501
  1027. #define WIN32_LEAN_AND_MEAN
  1028. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  1029. #include <winsock.h>
  1030. #else
  1031. #include <winsock2.h>
  1032. #include <ws2tcpip.h>
  1033. #endif
  1034. #endif
  1035. ])
  1036. AC_CHECK_TYPES([rlim_t], , ,
  1037. [#ifdef HAVE_SYS_TYPES_H
  1038. #include <sys/types.h>
  1039. #endif
  1040. #ifdef HAVE_SYS_TIME_H
  1041. #include <sys/time.h>
  1042. #endif
  1043. #ifdef HAVE_SYS_RESOURCE_H
  1044. #include <sys/resource.h>
  1045. #endif
  1046. ])
  1047. AX_CHECK_SIGN([time_t],
  1048. [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
  1049. [ : ], [
  1050. #ifdef HAVE_SYS_TYPES_H
  1051. #include <sys/types.h>
  1052. #endif
  1053. #ifdef HAVE_SYS_TIME_H
  1054. #include <sys/time.h>
  1055. #endif
  1056. #ifdef HAVE_TIME_H
  1057. #include <time.h>
  1058. #endif
  1059. ])
  1060. if test "$ax_cv_decl_time_t_signed" = no; then
  1061. AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
  1062. fi
  1063. AX_CHECK_SIGN([size_t],
  1064. [ tor_cv_size_t_signed=yes ],
  1065. [ tor_cv_size_t_signed=no ], [
  1066. #ifdef HAVE_SYS_TYPES_H
  1067. #include <sys/types.h>
  1068. #endif
  1069. ])
  1070. if test "$ax_cv_decl_size_t_signed" = yes; then
  1071. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1072. fi
  1073. AX_CHECK_SIGN([enum always],
  1074. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1075. [ : ], [
  1076. enum always { AAA, BBB, CCC };
  1077. ])
  1078. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1079. #ifdef HAVE_SYS_SOCKET_H
  1080. #include <sys/socket.h>
  1081. #endif
  1082. ])
  1083. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1084. AC_CHECK_SIZEOF(cell_t)
  1085. # Now make sure that NULL can be represented as zero bytes.
  1086. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1087. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1088. [[#include <stdlib.h>
  1089. #include <string.h>
  1090. #include <stdio.h>
  1091. #ifdef HAVE_STDDEF_H
  1092. #include <stddef.h>
  1093. #endif
  1094. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1095. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1096. [tor_cv_null_is_zero=yes],
  1097. [tor_cv_null_is_zero=no],
  1098. [tor_cv_null_is_zero=cross])])
  1099. if test "$tor_cv_null_is_zero" = cross ; then
  1100. # Cross-compiling; let's hope that the target isn't raving mad.
  1101. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1102. fi
  1103. if test "$tor_cv_null_is_zero" != no; then
  1104. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1105. [Define to 1 iff memset(0) sets pointers to NULL])
  1106. fi
  1107. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1108. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1109. [[#include <stdlib.h>
  1110. #include <string.h>
  1111. #include <stdio.h>
  1112. #ifdef HAVE_STDDEF_H
  1113. #include <stddef.h>
  1114. #endif
  1115. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1116. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1117. [tor_cv_dbl0_is_zero=yes],
  1118. [tor_cv_dbl0_is_zero=no],
  1119. [tor_cv_dbl0_is_zero=cross])])
  1120. if test "$tor_cv_dbl0_is_zero" = cross ; then
  1121. # Cross-compiling; let's hope that the target isn't raving mad.
  1122. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1123. fi
  1124. if test "$tor_cv_dbl0_is_zero" != no; then
  1125. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1126. [Define to 1 iff memset(0) sets doubles to 0.0])
  1127. fi
  1128. # And what happens when we malloc zero?
  1129. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1130. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1131. [[#include <stdlib.h>
  1132. #include <string.h>
  1133. #include <stdio.h>
  1134. #ifdef HAVE_STDDEF_H
  1135. #include <stddef.h>
  1136. #endif
  1137. int main () { return malloc(0)?0:1; }]])],
  1138. [tor_cv_malloc_zero_works=yes],
  1139. [tor_cv_malloc_zero_works=no],
  1140. [tor_cv_malloc_zero_works=cross])])
  1141. if test "$tor_cv_malloc_zero_works" = cross; then
  1142. # Cross-compiling; let's hope that the target isn't raving mad.
  1143. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1144. fi
  1145. if test "$tor_cv_malloc_zero_works" = yes; then
  1146. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1147. [Define to 1 iff malloc(0) returns a pointer])
  1148. fi
  1149. # whether we seem to be in a 2s-complement world.
  1150. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1151. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1152. [[int main () { int problem = ((-99) != (~99)+1);
  1153. return problem ? 1 : 0; }]])],
  1154. [tor_cv_twos_complement=yes],
  1155. [tor_cv_twos_complement=no],
  1156. [tor_cv_twos_complement=cross])])
  1157. if test "$tor_cv_twos_complement" = cross ; then
  1158. # Cross-compiling; let's hope that the target isn't raving mad.
  1159. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1160. fi
  1161. if test "$tor_cv_twos_complement" != no ; then
  1162. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1163. [Define to 1 iff we represent negative integers with two's complement])
  1164. fi
  1165. # What does shifting a negative value do?
  1166. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1167. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1168. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1169. [tor_cv_sign_extend=yes],
  1170. [tor_cv_sign_extend=no],
  1171. [tor_cv_sign_extend=cross])])
  1172. if test "$tor_cv_sign_extend" = cross ; then
  1173. # Cross-compiling; let's hope that the target isn't raving mad.
  1174. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1175. fi
  1176. if test "$tor_cv_sign_extend" != no ; then
  1177. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1178. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1179. fi
  1180. # Whether we should use the dmalloc memory allocation debugging library.
  1181. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1182. AC_ARG_WITH(dmalloc,
  1183. [ --with-dmalloc Use debug memory allocation library. ],
  1184. [if [[ "$withval" = "yes" ]]; then
  1185. dmalloc=1
  1186. AC_MSG_RESULT(yes)
  1187. else
  1188. dmalloc=1
  1189. AC_MSG_RESULT(no)
  1190. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1191. )
  1192. if [[ $dmalloc -eq 1 ]]; then
  1193. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1194. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1195. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1196. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1197. fi
  1198. AC_ARG_WITH(tcmalloc,
  1199. [ --with-tcmalloc Use tcmalloc memory allocation library. ],
  1200. [ tcmalloc=yes ], [ tcmalloc=no ])
  1201. if test x$tcmalloc = xyes ; then
  1202. LDFLAGS="-ltcmalloc $LDFLAGS"
  1203. fi
  1204. using_custom_malloc=no
  1205. if test x$enable_openbsd_malloc = xyes ; then
  1206. using_custom_malloc=yes
  1207. fi
  1208. if test x$tcmalloc = xyes ; then
  1209. using_custom_malloc=yes
  1210. fi
  1211. if test $using_custom_malloc = no ; then
  1212. AC_CHECK_FUNCS(mallinfo)
  1213. fi
  1214. # By default, we're going to assume we don't have mlockall()
  1215. # bionic and other platforms have various broken mlockall subsystems.
  1216. # Some systems don't have a working mlockall, some aren't linkable,
  1217. # and some have it but don't declare it.
  1218. AC_CHECK_FUNCS(mlockall)
  1219. AC_CHECK_DECLS([mlockall], , , [
  1220. #ifdef HAVE_SYS_MMAN_H
  1221. #include <sys/mman.h>
  1222. #endif])
  1223. # Allow user to specify an alternate syslog facility
  1224. AC_ARG_WITH(syslog-facility,
  1225. [ --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
  1226. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1227. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1228. AC_SUBST(LOGFACILITY)
  1229. # Check if we have getresuid and getresgid
  1230. AC_CHECK_FUNCS(getresuid getresgid)
  1231. # Check for gethostbyname_r in all its glorious incompatible versions.
  1232. # (This logic is based on that in Python's configure.in)
  1233. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1234. [Define this if you have any gethostbyname_r()])
  1235. AC_CHECK_FUNC(gethostbyname_r, [
  1236. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1237. OLD_CFLAGS=$CFLAGS
  1238. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1239. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
  1240. #include <netdb.h>
  1241. ], [[
  1242. char *cp1, *cp2;
  1243. struct hostent *h1, *h2;
  1244. int i1, i2;
  1245. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1246. ]])],[
  1247. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1248. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1249. [Define this if gethostbyname_r takes 6 arguments])
  1250. AC_MSG_RESULT(6)
  1251. ], [
  1252. AC_TRY_COMPILE([
  1253. #include <netdb.h>
  1254. ], [
  1255. char *cp1, *cp2;
  1256. struct hostent *h1;
  1257. int i1, i2;
  1258. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1259. ], [
  1260. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1261. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1262. [Define this if gethostbyname_r takes 5 arguments])
  1263. AC_MSG_RESULT(5)
  1264. ], [
  1265. AC_TRY_COMPILE([
  1266. #include <netdb.h>
  1267. ], [
  1268. char *cp1;
  1269. struct hostent *h1;
  1270. struct hostent_data hd;
  1271. (void) gethostbyname_r(cp1,h1,&hd);
  1272. ], [
  1273. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1274. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1275. [Define this if gethostbyname_r takes 3 arguments])
  1276. AC_MSG_RESULT(3)
  1277. ], [
  1278. AC_MSG_RESULT(0)
  1279. ])
  1280. ])
  1281. ])
  1282. CFLAGS=$OLD_CFLAGS
  1283. ])
  1284. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1285. tor_cv_have_func_macro,
  1286. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1287. #include <stdio.h>
  1288. int main(int c, char **v) { puts(__func__); }])],
  1289. tor_cv_have_func_macro=yes,
  1290. tor_cv_have_func_macro=no))
  1291. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1292. tor_cv_have_FUNC_macro,
  1293. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1294. #include <stdio.h>
  1295. int main(int c, char **v) { puts(__FUNC__); }])],
  1296. tor_cv_have_FUNC_macro=yes,
  1297. tor_cv_have_FUNC_macro=no))
  1298. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1299. tor_cv_have_FUNCTION_macro,
  1300. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1301. #include <stdio.h>
  1302. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1303. tor_cv_have_FUNCTION_macro=yes,
  1304. tor_cv_have_FUNCTION_macro=no))
  1305. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1306. tor_cv_have_environ_declared,
  1307. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1308. /* We define _GNU_SOURCE here because it is also defined in compat.c.
  1309. * Without it environ doesn't get declared. */
  1310. #define _GNU_SOURCE
  1311. #ifdef HAVE_UNISTD_H
  1312. #include <unistd.h>
  1313. #endif
  1314. #include <stdlib.h>
  1315. int main(int c, char **v) { char **t = environ; }])],
  1316. tor_cv_have_environ_declared=yes,
  1317. tor_cv_have_environ_declared=no))
  1318. if test "$tor_cv_have_func_macro" = 'yes'; then
  1319. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1320. fi
  1321. if test "$tor_cv_have_FUNC_macro" = 'yes'; then
  1322. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1323. fi
  1324. if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
  1325. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1326. [Defined if the compiler supports __FUNCTION__])
  1327. fi
  1328. if test "$tor_cv_have_environ_declared" = 'yes'; then
  1329. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1330. [Defined if we have extern char **environ already declared])
  1331. fi
  1332. # $prefix stores the value of the --prefix command line option, or
  1333. # NONE if the option wasn't set. In the case that it wasn't set, make
  1334. # it be the default, so that we can use it to expand directories now.
  1335. if test "x$prefix" = "xNONE"; then
  1336. prefix=$ac_default_prefix
  1337. fi
  1338. # and similarly for $exec_prefix
  1339. if test "x$exec_prefix" = "xNONE"; then
  1340. exec_prefix=$prefix
  1341. fi
  1342. if test "x$BUILDDIR" = "x"; then
  1343. BUILDDIR=`pwd`
  1344. fi
  1345. AC_SUBST(BUILDDIR)
  1346. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1347. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1348. if test "x$CONFDIR" = "x"; then
  1349. CONFDIR=`eval echo $sysconfdir/tor`
  1350. fi
  1351. AC_SUBST(CONFDIR)
  1352. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1353. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1354. BINDIR=`eval echo $bindir`
  1355. AC_SUBST(BINDIR)
  1356. LOCALSTATEDIR=`eval echo $localstatedir`
  1357. AC_SUBST(LOCALSTATEDIR)
  1358. if test "$bwin32" = true; then
  1359. # Test if the linker supports the --nxcompat and --dynamicbase options
  1360. # for Windows
  1361. save_LDFLAGS="$LDFLAGS"
  1362. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1363. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1364. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1365. [AC_MSG_RESULT([yes])]
  1366. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1367. [AC_MSG_RESULT([no])]
  1368. )
  1369. LDFLAGS="$save_LDFLAGS"
  1370. fi
  1371. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1372. # than autoconf's macros like.
  1373. if test "$GCC" = yes; then
  1374. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1375. # accident waiting to happen.
  1376. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1377. else
  1378. # Override optimization level for non-gcc compilers
  1379. CFLAGS="$CFLAGS -O"
  1380. enable_gcc_warnings=no
  1381. enable_gcc_warnings_advisory=no
  1382. fi
  1383. # OS X Lion started deprecating the system openssl. Let's just disable
  1384. # all deprecation warnings on OS X. Also, to potentially make the binary
  1385. # a little smaller, let's enable dead_strip.
  1386. case "$host_os" in
  1387. darwin*)
  1388. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1389. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1390. esac
  1391. # Add some more warnings which we use in development but not in the
  1392. # released versions. (Some relevant gcc versions can't handle these.)
  1393. if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
  1394. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1395. #if !defined(__GNUC__) || (__GNUC__ < 4)
  1396. #error
  1397. #endif])], have_gcc4=yes, have_gcc4=no)
  1398. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1399. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
  1400. #error
  1401. #endif])], have_gcc42=yes, have_gcc42=no)
  1402. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1403. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
  1404. #error
  1405. #endif])], have_gcc43=yes, have_gcc43=no)
  1406. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1407. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
  1408. #error
  1409. #endif])], have_gcc46=yes, have_gcc46=no)
  1410. save_CFLAGS="$CFLAGS"
  1411. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1412. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
  1413. have_shorten64_flag=no)
  1414. CFLAGS="$save_CFLAGS"
  1415. case $host in
  1416. *-*-openbsd* | *-*-bitrig*)
  1417. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1418. # That's fine, except that the headers don't pass -Wredundant-decls.
  1419. # Therefore, let's disable -Wsystem-headers when we're building
  1420. # with maximal warnings on OpenBSD.
  1421. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1422. esac
  1423. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1424. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1425. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1426. CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
  1427. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1428. if test x$enable_gcc_warnings = xyes; then
  1429. CFLAGS="$CFLAGS -Werror"
  1430. fi
  1431. # Disabled, so we can use mallinfo(): -Waggregate-return
  1432. if test x$have_gcc4 = xyes ; then
  1433. # These warnings break gcc 3.3.5 and work on gcc 4.0.2
  1434. CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wold-style-definition"
  1435. fi
  1436. if test x$have_gcc42 = xyes ; then
  1437. # These warnings break gcc 4.0.2 and work on gcc 4.2
  1438. # XXXX020 See if any of these work with earlier versions.
  1439. CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
  1440. # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
  1441. fi
  1442. if test x$have_gcc42 = xyes && test x$have_clang = xno; then
  1443. # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
  1444. CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
  1445. fi
  1446. if test x$have_gcc43 = xyes ; then
  1447. # These warnings break gcc 4.2 and work on gcc 4.3
  1448. # XXXX020 See if any of these work with earlier versions.
  1449. CFLAGS="$CFLAGS -Wextra -Warray-bounds"
  1450. fi
  1451. if test x$have_gcc46 = xyes ; then
  1452. # This warning was added in gcc 4.3, but it appears to generate
  1453. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1454. CFLAGS="$CFLAGS -Wlogical-op"
  1455. fi
  1456. if test x$have_shorten64_flag = xyes ; then
  1457. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1458. fi
  1459. ##This will break the world on some 64-bit architectures
  1460. # CFLAGS="$CFLAGS -Winline"
  1461. fi
  1462. if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
  1463. case "$host_os" in
  1464. darwin*)
  1465. 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.])
  1466. esac
  1467. fi
  1468. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  1469. AC_CONFIG_FILES([
  1470. Doxyfile
  1471. Makefile
  1472. contrib/dist/suse/tor.sh
  1473. contrib/operator-tools/tor.logrotate
  1474. contrib/dist/tor.sh
  1475. contrib/dist/torctl
  1476. contrib/dist/tor.service
  1477. src/config/torrc.sample
  1478. src/config/torrc.minimal
  1479. ])
  1480. if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
  1481. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  1482. for file in $regular_mans ; do
  1483. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  1484. echo "==================================";
  1485. echo;
  1486. echo "Building Tor has failed since manpages cannot be built.";
  1487. echo;
  1488. echo "You need asciidoc installed to be able to build the manpages.";
  1489. echo "To build without manpages, use the --disable-asciidoc argument";
  1490. echo "when calling configure.";
  1491. echo;
  1492. echo "==================================";
  1493. exit 1;
  1494. fi
  1495. done
  1496. fi
  1497. AC_OUTPUT
  1498. if test -x /usr/bin/perl && test -x ./scripts/maint/updateVersions.pl ; then
  1499. ./scripts/maint/updateVersions.pl
  1500. fi