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