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