configure.ac 52 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],[0.2.7.0-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(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 "$enable_system_torrc" = "no"; then
  49. AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
  50. [Defined if we're not going to look for a torrc in SYSCONF])
  51. fi
  52. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
  53. if test x$enable_instrument_downloads = xyes; then
  54. AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
  55. [Defined if we want to keep track of how much of each kind of resource we download.])
  56. fi
  57. AC_ARG_ENABLE(transparent,
  58. AS_HELP_STRING(--disable-transparent, [disable transparent proxy support]),
  59. [case "${enableval}" in
  60. yes) transparent=true ;;
  61. no) transparent=false ;;
  62. *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
  63. esac], [transparent=true])
  64. AC_ARG_ENABLE(asciidoc,
  65. AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
  66. [case "${enableval}" in
  67. yes) asciidoc=true ;;
  68. no) asciidoc=false ;;
  69. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  70. esac], [asciidoc=true])
  71. # By default, we're not ready to ship a NAT-PMP aware Tor
  72. AC_ARG_ENABLE(nat-pmp,
  73. AS_HELP_STRING(--enable-nat-pmp, [enable NAT-PMP support]),
  74. [case "${enableval}" in
  75. yes) natpmp=true ;;
  76. no) natpmp=false ;;
  77. * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
  78. esac], [natpmp=false])
  79. # By default, we're not ready to ship a UPnP aware Tor
  80. AC_ARG_ENABLE(upnp,
  81. AS_HELP_STRING(--enable-upnp, [enable UPnP support]),
  82. [case "${enableval}" in
  83. yes) upnp=true ;;
  84. no) upnp=false ;;
  85. * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
  86. esac], [upnp=false])
  87. # systemd notify support
  88. AC_ARG_ENABLE(systemd,
  89. AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
  90. [case "${enableval}" in
  91. yes) systemd=true ;;
  92. no) systemd=false ;;
  93. * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
  94. esac], [systemd=auto])
  95. # systemd support
  96. if test x$enable_systemd = xno ; then
  97. have_systemd=no;
  98. else
  99. PKG_CHECK_MODULES(SYSTEMD,
  100. [libsystemd-daemon],
  101. have_systemd=yes,
  102. have_systemd=no)
  103. if test x$have_systemd=xno; then
  104. AC_MSG_NOTICE([Okay, checking for systemd a different way...])
  105. PKG_CHECK_MODULES(SYSTEMD,
  106. [libsystemd],
  107. have_systemd=yes,
  108. have_systemd=no)
  109. fi
  110. fi
  111. if test x$have_systemd = xyes; then
  112. AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
  113. TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
  114. TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
  115. PKG_CHECK_MODULES(SYSTEMD209, [systemd >= 209],
  116. [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
  117. fi
  118. AC_SUBST(TOR_SYSTEMD_CFLAGS)
  119. AC_SUBST(TOR_SYSTEMD_LIBS)
  120. if test x$enable_systemd = xyes -a x$have_systemd != xyes ; then
  121. AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
  122. fi
  123. case $host in
  124. *-*-solaris* )
  125. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  126. ;;
  127. esac
  128. AC_ARG_ENABLE(gcc-warnings,
  129. AS_HELP_STRING(--enable-gcc-warnings, [enable verbose warnings]))
  130. AC_ARG_ENABLE(gcc-warnings-advisory,
  131. AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
  132. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  133. AC_ARG_ENABLE(gcc-hardening,
  134. AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
  135. AC_ARG_ENABLE(expensive-hardening,
  136. AS_HELP_STRING(--enable-expensive-hardening, [enable more expensive compiler hardening; makes Tor slower]))
  137. dnl Linker hardening options
  138. dnl Currently these options are ELF specific - you can't use this with MacOSX
  139. AC_ARG_ENABLE(linker-hardening,
  140. AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
  141. AC_ARG_ENABLE(local-appdata,
  142. AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
  143. if test "$enable_local_appdata" = "yes"; then
  144. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  145. [Defined if we default to host local appdata paths on Windows])
  146. fi
  147. # Tor2web mode flag
  148. AC_ARG_ENABLE(tor2web-mode,
  149. AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
  150. [if test x$enableval = xyes; then
  151. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  152. fi])
  153. AC_ARG_ENABLE(bufferevents,
  154. AS_HELP_STRING(--enable-bufferevents, [use Libevent's buffered IO]))
  155. AC_ARG_ENABLE(tool-name-check,
  156. AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
  157. AC_ARG_ENABLE(seccomp,
  158. AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
  159. AC_ARG_ENABLE(libscrypt,
  160. AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
  161. dnl check for the correct "ar" when cross-compiling
  162. AN_MAKEVAR([AR], [AC_PROG_AR])
  163. AN_PROGRAM([ar], [AC_PROG_AR])
  164. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
  165. AC_PROG_AR
  166. dnl Check whether the above macro has settled for a simply named tool even
  167. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  168. dnl because that will find any cc on the system, not only the cross-compiler,
  169. dnl and then verify that a binary built with this compiler runs on the
  170. dnl build system. It will then come to the false conclusion that we're not
  171. dnl cross-compiling.
  172. if test x$enable_tool_name_check != xno; then
  173. if test x$ac_tool_warned = xyes; then
  174. 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.)])
  175. elif test "x$ac_ct_AR" != x -a x$cross_compiling = xmaybe; then
  176. 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.)])
  177. fi
  178. fi
  179. AC_PROG_CC
  180. AC_PROG_CPP
  181. AC_PROG_MAKE_SET
  182. AC_PROG_RANLIB
  183. AC_PATH_PROG([PERL], [perl])
  184. dnl autoconf 2.59 appears not to support AC_PROG_SED
  185. AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
  186. dnl check for asciidoc and a2x
  187. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  188. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  189. AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
  190. AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
  191. AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
  192. AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
  193. AM_PROG_CC_C_O
  194. AC_PROG_CC_C99
  195. AC_ARG_VAR([PYTHON], [path to Python binary])
  196. AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
  197. if test "x$PYTHON" = "x"; then
  198. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  199. fi
  200. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  201. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  202. AC_C_FLEXIBLE_ARRAY_MEMBER
  203. ], [
  204. dnl Maybe we've got an old autoconf...
  205. AC_CACHE_CHECK([for flexible array members],
  206. tor_cv_c_flexarray,
  207. [AC_COMPILE_IFELSE(
  208. AC_LANG_PROGRAM([
  209. struct abc { int a; char b[]; };
  210. ], [
  211. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  212. def->b[0] = 33;
  213. ]),
  214. [tor_cv_c_flexarray=yes],
  215. [tor_cv_c_flexarray=no])])
  216. if test $tor_cv_flexarray = yes ; then
  217. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  218. else
  219. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  220. fi
  221. ])
  222. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  223. tor_cv_c_c99_decl,
  224. [AC_COMPILE_IFELSE(
  225. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  226. [tor_cv_c_c99_decl=yes],
  227. [tor_cv_c_c99_decl=no] )])
  228. if test "$tor_cv_c_c99_decl" != "yes"; then
  229. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  230. fi
  231. AC_CACHE_CHECK([for working C99 designated initializers],
  232. tor_cv_c_c99_designated_init,
  233. [AC_COMPILE_IFELSE(
  234. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  235. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  236. [tor_cv_c_c99_designated_init=yes],
  237. [tor_cv_c_c99_designated_init=no] )])
  238. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  239. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  240. fi
  241. AC_PATH_PROG([SHA1SUM], [sha1sum], none)
  242. AC_PATH_PROG([OPENSSL], [openssl], none)
  243. TORUSER=_tor
  244. AC_ARG_WITH(tor-user,
  245. AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
  246. [
  247. TORUSER=$withval
  248. ]
  249. )
  250. AC_SUBST(TORUSER)
  251. TORGROUP=_tor
  252. AC_ARG_WITH(tor-group,
  253. AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
  254. [
  255. TORGROUP=$withval
  256. ]
  257. )
  258. AC_SUBST(TORGROUP)
  259. dnl If _WIN32 is defined and non-zero, we are building for win32
  260. AC_MSG_CHECKING([for win32])
  261. AC_RUN_IFELSE([AC_LANG_SOURCE([
  262. int main(int c, char **v) {
  263. #ifdef _WIN32
  264. #if _WIN32
  265. return 0;
  266. #else
  267. return 1;
  268. #endif
  269. #else
  270. return 2;
  271. #endif
  272. }])],
  273. bwin32=true; AC_MSG_RESULT([yes]),
  274. bwin32=false; AC_MSG_RESULT([no]),
  275. bwin32=cross; AC_MSG_RESULT([cross])
  276. )
  277. if test "$bwin32" = cross; then
  278. AC_MSG_CHECKING([for win32 (cross)])
  279. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  280. #ifdef _WIN32
  281. int main(int c, char **v) {return 0;}
  282. #else
  283. #error
  284. int main(int c, char **v) {return x(y);}
  285. #endif
  286. ])],
  287. bwin32=true; AC_MSG_RESULT([yes]),
  288. bwin32=false; AC_MSG_RESULT([no]))
  289. fi
  290. AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
  291. dnl Enable C99 when compiling with MIPSpro
  292. AC_MSG_CHECKING([for MIPSpro compiler])
  293. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  294. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  295. #error
  296. return x(y);
  297. #endif
  298. ])],
  299. bmipspro=false; AC_MSG_RESULT(no),
  300. bmipspro=true; AC_MSG_RESULT(yes))
  301. if test "$bmipspro" = true; then
  302. CFLAGS="$CFLAGS -c99"
  303. fi
  304. AC_C_BIGENDIAN
  305. AC_SEARCH_LIBS(socket, [socket network])
  306. AC_SEARCH_LIBS(gethostbyname, [nsl])
  307. AC_SEARCH_LIBS(dlopen, [dl])
  308. AC_SEARCH_LIBS(inet_aton, [resolv])
  309. saved_LIBS="$LIBS"
  310. AC_SEARCH_LIBS([clock_gettime], [rt])
  311. if test "$LIBS" != "$saved_LIBS"; then
  312. # Looks like we need -lrt for clock_gettime().
  313. have_rt=yes
  314. fi
  315. AC_SEARCH_LIBS(pthread_create, [pthread])
  316. AC_SEARCH_LIBS(pthread_detach, [pthread])
  317. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  318. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  319. dnl -------------------------------------------------------------------
  320. dnl Check for functions before libevent, since libevent-1.2 apparently
  321. dnl exports strlcpy without defining it in a header.
  322. AC_CHECK_FUNCS(
  323. _NSGetEnviron \
  324. accept4 \
  325. backtrace \
  326. backtrace_symbols_fd \
  327. clock_gettime \
  328. eventfd \
  329. flock \
  330. ftime \
  331. getaddrinfo \
  332. getifaddrs \
  333. getrlimit \
  334. gettimeofday \
  335. gmtime_r \
  336. inet_aton \
  337. ioctl \
  338. issetugid \
  339. llround \
  340. localtime_r \
  341. lround \
  342. memmem \
  343. pipe \
  344. pipe2 \
  345. prctl \
  346. rint \
  347. sigaction \
  348. socketpair \
  349. strlcat \
  350. strlcpy \
  351. strnlen \
  352. strptime \
  353. strtok_r \
  354. strtoull \
  355. sysconf \
  356. sysctl \
  357. uname \
  358. usleep \
  359. vasprintf \
  360. _vscprintf
  361. )
  362. if test "$bwin32" != true; then
  363. AC_CHECK_HEADERS(pthread.h)
  364. AC_CHECK_FUNCS(pthread_create)
  365. fi
  366. dnl ------------------------------------------------------
  367. dnl Where do you live, libevent? And how do we call you?
  368. if test "$bwin32" = true; then
  369. TOR_LIB_WS32=-lws2_32
  370. TOR_LIB_IPHLPAPI=-liphlpapi
  371. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  372. # think it's actually necessary.
  373. TOR_LIB_GDI=-lgdi32
  374. else
  375. TOR_LIB_WS32=
  376. TOR_LIB_GDI=
  377. fi
  378. AC_SUBST(TOR_LIB_WS32)
  379. AC_SUBST(TOR_LIB_GDI)
  380. AC_SUBST(TOR_LIB_IPHLPAPI)
  381. dnl We need to do this before we try our disgusting hack below.
  382. AC_CHECK_HEADERS([sys/types.h])
  383. dnl This is a disgusting hack so we safely include older libevent headers.
  384. AC_CHECK_TYPE(u_int64_t, unsigned long long)
  385. AC_CHECK_TYPE(u_int32_t, unsigned long)
  386. AC_CHECK_TYPE(u_int16_t, unsigned short)
  387. AC_CHECK_TYPE(u_int8_t, unsigned char)
  388. tor_libevent_pkg_redhat="libevent"
  389. tor_libevent_pkg_debian="libevent-dev"
  390. tor_libevent_devpkg_redhat="libevent-devel"
  391. tor_libevent_devpkg_debian="libevent-dev"
  392. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  393. dnl linking for static builds.
  394. STATIC_LIBEVENT_FLAGS=""
  395. if test "$enable_static_libevent" = "yes"; then
  396. if test "$have_rt" = yes; then
  397. STATIC_LIBEVENT_FLAGS=" -lrt "
  398. fi
  399. fi
  400. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  401. #ifdef _WIN32
  402. #include <winsock2.h>
  403. #endif
  404. #include <stdlib.h>
  405. #include <sys/time.h>
  406. #include <sys/types.h>
  407. #include <event.h>], [
  408. #ifdef _WIN32
  409. #include <winsock2.h>
  410. #endif
  411. void exit(int); void *event_init(void);],
  412. [
  413. #ifdef _WIN32
  414. {WSADATA d; WSAStartup(0x101,&d); }
  415. #endif
  416. event_init(); exit(0);
  417. ], [--with-libevent-dir], [/opt/libevent])
  418. dnl Now check for particular libevent functions.
  419. save_LIBS="$LIBS"
  420. save_LDFLAGS="$LDFLAGS"
  421. save_CPPFLAGS="$CPPFLAGS"
  422. LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
  423. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  424. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  425. AC_CHECK_FUNCS([event_get_version \
  426. event_get_version_number \
  427. event_get_method \
  428. event_set_log_callback \
  429. evutil_secure_rng_set_urandom_device_file \
  430. evutil_secure_rng_init \
  431. event_base_loopexit])
  432. AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
  433. [#include <event.h>
  434. ])
  435. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  436. LIBS="$save_LIBS"
  437. LDFLAGS="$save_LDFLAGS"
  438. CPPFLAGS="$save_CPPFLAGS"
  439. AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
  440. if test "$enable_static_libevent" = "yes"; then
  441. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  442. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  443. else
  444. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  445. fi
  446. else
  447. TOR_LIBEVENT_LIBS="-levent"
  448. fi
  449. dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
  450. dnl we can do much better.
  451. if test "$enable_bufferevents" = "yes" ; then
  452. if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
  453. AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
  454. else
  455. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  456. # Check for the right version. First see if version detection works.
  457. AC_MSG_CHECKING([whether we can detect the Libevent version])
  458. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  459. #include <event2/event.h>
  460. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
  461. #error
  462. int x = y(zz);
  463. #else
  464. int x = 1;
  465. #endif
  466. ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
  467. [event_version_number_works=no; AC_MSG_RESULT([no])])
  468. if test "$event_version_number_works" != 'yes'; then
  469. AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
  470. else
  471. AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
  472. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  473. #include <event2/event.h>
  474. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
  475. #error
  476. int x = y(zz);
  477. #else
  478. int x = 1;
  479. #endif
  480. ])], [ AC_MSG_RESULT([yes]) ],
  481. [ AC_MSG_RESULT([no])
  482. AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
  483. fi
  484. fi
  485. fi
  486. LIBS="$save_LIBS"
  487. LDFLAGS="$save_LDFLAGS"
  488. CPPFLAGS="$save_CPPFLAGS"
  489. AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
  490. if test "$enable_bufferevents" = "yes"; then
  491. AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
  492. if test "$enable_static_libevent" = "yes"; then
  493. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
  494. else
  495. TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
  496. fi
  497. fi
  498. AC_SUBST(TOR_LIBEVENT_LIBS)
  499. dnl ------------------------------------------------------
  500. dnl Where do you live, libm?
  501. dnl On some platforms (Haiku/BeOS) the math library is
  502. dnl part of libroot. In which case don't link against lm
  503. TOR_LIB_MATH=""
  504. save_LIBS="$LIBS"
  505. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  506. if test "$ac_cv_search_pow" != "none required"; then
  507. TOR_LIB_MATH="$ac_cv_search_pow"
  508. fi
  509. LIBS="$save_LIBS"
  510. AC_SUBST(TOR_LIB_MATH)
  511. dnl ------------------------------------------------------
  512. dnl Where do you live, openssl? And how do we call you?
  513. tor_openssl_pkg_redhat="openssl"
  514. tor_openssl_pkg_debian="libssl-dev"
  515. tor_openssl_devpkg_redhat="openssl-devel"
  516. tor_openssl_devpkg_debian="libssl-dev"
  517. ALT_openssl_WITHVAL=""
  518. AC_ARG_WITH(ssl-dir,
  519. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  520. [
  521. if test "x$withval" != xno && test "x$withval" != "x" ; then
  522. ALT_openssl_WITHVAL="$withval"
  523. fi
  524. ])
  525. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
  526. [#include <openssl/rand.h>],
  527. [void RAND_add(const void *buf, int num, double entropy);],
  528. [RAND_add((void*)0,0,0); exit(0);], [],
  529. [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
  530. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  531. if test "$enable_static_openssl" = "yes"; then
  532. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  533. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  534. else
  535. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  536. fi
  537. else
  538. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  539. fi
  540. AC_SUBST(TOR_OPENSSL_LIBS)
  541. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  542. [#include <openssl/ssl.h>
  543. ])
  544. dnl ------------------------------------------------------
  545. dnl Where do you live, zlib? And how do we call you?
  546. tor_zlib_pkg_redhat="zlib"
  547. tor_zlib_pkg_debian="zlib1g"
  548. tor_zlib_devpkg_redhat="zlib-devel"
  549. tor_zlib_devpkg_debian="zlib1g-dev"
  550. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  551. [#include <zlib.h>],
  552. [const char * zlibVersion(void);],
  553. [zlibVersion(); exit(0);], [--with-zlib-dir],
  554. [/opt/zlib])
  555. if test "$enable_static_zlib" = "yes"; then
  556. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  557. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  558. using --enable-static-zlib")
  559. else
  560. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  561. fi
  562. else
  563. TOR_ZLIB_LIBS="-lz"
  564. fi
  565. AC_SUBST(TOR_ZLIB_LIBS)
  566. dnl ---------------------------------------------------------------------
  567. dnl Now that we know about our major libraries, we can check for compiler
  568. dnl and linker hardening options. We need to do this with the libraries known,
  569. dnl since sometimes the linker will like an option but not be willing to
  570. dnl use it with a build of a library.
  571. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  572. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
  573. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  574. #if !defined(__clang__)
  575. #error
  576. #endif])], have_clang=yes, have_clang=no)
  577. if test x$enable_gcc_hardening != xno; then
  578. CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
  579. if test x$have_clang = xyes; then
  580. TOR_CHECK_CFLAGS(-Qunused-arguments)
  581. fi
  582. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  583. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  584. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  585. m4_ifdef([AS_VAR_IF],[
  586. AS_VAR_IF(can_compile, [yes],
  587. AS_VAR_IF(can_link, [yes],
  588. [],
  589. 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.)]))
  590. )])
  591. AS_VAR_POPDEF([can_link])
  592. AS_VAR_POPDEF([can_compile])
  593. TOR_CHECK_CFLAGS(-Wstack-protector)
  594. TOR_CHECK_CFLAGS(-fwrapv)
  595. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  596. if test "$bwin32" = "false"; then
  597. TOR_CHECK_CFLAGS(-fPIE)
  598. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  599. fi
  600. fi
  601. if test x$enable_expensive_hardening = xyes ; then
  602. TOR_CHECK_CFLAGS([-fsanitize=address])
  603. TOR_CHECK_CFLAGS([-fsanitize=undefined])
  604. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  605. fi
  606. if test x$enable_linker_hardening != xno; then
  607. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  608. fi
  609. # For backtrace support
  610. TOR_CHECK_LDFLAGS(-rdynamic)
  611. dnl ------------------------------------------------------
  612. dnl Now see if we have a -fomit-frame-pointer compiler option.
  613. saved_CFLAGS="$CFLAGS"
  614. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  615. F_OMIT_FRAME_POINTER=''
  616. if test "$saved_CFLAGS" != "$CFLAGS"; then
  617. if test x$enable_expensive_hardening != xyes ; then
  618. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  619. fi
  620. fi
  621. CFLAGS="$saved_CFLAGS"
  622. AC_SUBST(F_OMIT_FRAME_POINTER)
  623. dnl ------------------------------------------------------
  624. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  625. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  626. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  627. dnl code will work.
  628. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  629. dnl ------------------------------------------------------
  630. dnl Where do you live, libnatpmp? And how do we call you?
  631. dnl There are no packages for Debian or Redhat as of this patch
  632. if test "$natpmp" = "true"; then
  633. AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
  634. TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  635. [#include <natpmp.h>],
  636. [#ifdef _WIN32
  637. #define STATICLIB
  638. #endif
  639. #include <natpmp.h>],
  640. [ int r;
  641. natpmp_t natpmp;
  642. natpmpresp_t response;
  643. r = initnatpmp(&natpmp, 0, 0);],
  644. [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
  645. exit(0);],
  646. [--with-libnatpmp-dir],
  647. [/usr/lib/])
  648. fi
  649. dnl ------------------------------------------------------
  650. dnl Where do you live, libminiupnpc? And how do we call you?
  651. dnl There are no packages for Debian or Redhat as of this patch
  652. if test "$upnp" = "true"; then
  653. AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
  654. dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
  655. dnl to see if we have miniupnpc-1.5 or -1.6
  656. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
  657. [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])
  658. if test "$miniupnpc15" = "true" ; then
  659. AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
  660. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  661. [#include <miniupnpc/miniwget.h>
  662. #include <miniupnpc/miniupnpc.h>
  663. #include <miniupnpc/upnpcommands.h>],
  664. [void upnpDiscover(int delay, const char * multicastif,
  665. const char * minissdpdsock, int sameport);],
  666. [upnpDiscover(1, 0, 0, 0); exit(0);],
  667. [--with-libminiupnpc-dir],
  668. [/usr/lib/])
  669. else
  670. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  671. [#include <miniupnpc/miniwget.h>
  672. #include <miniupnpc/miniupnpc.h>
  673. #include <miniupnpc/upnpcommands.h>],
  674. [void upnpDiscover(int delay, const char * multicastif,
  675. const char * minissdpdsock, int sameport, int ipv6, int * error);],
  676. [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
  677. [--with-libminiupnpc-dir],
  678. [/usr/lib/])
  679. fi
  680. fi
  681. dnl ============================================================
  682. dnl Check for libseccomp
  683. if test "x$enable_seccomp" != "xno"; then
  684. AC_CHECK_HEADERS([seccomp.h])
  685. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  686. fi
  687. dnl ============================================================
  688. dnl Check for libscrypt
  689. if test "x$enable_libscrypt" != "xno"; then
  690. AC_CHECK_HEADERS([libscrypt.h])
  691. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  692. fi
  693. dnl ============================================================
  694. dnl We need an implementation of curve25519.
  695. dnl set these defaults.
  696. build_curve25519_donna=no
  697. build_curve25519_donna_c64=no
  698. use_curve25519_donna=no
  699. use_curve25519_nacl=no
  700. CURVE25519_LIBS=
  701. dnl The best choice is using curve25519-donna-c64, but that requires
  702. dnl that we
  703. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  704. tor_cv_can_use_curve25519_donna_c64,
  705. [AC_RUN_IFELSE(
  706. [AC_LANG_PROGRAM([dnl
  707. #include <stdint.h>
  708. typedef unsigned uint128_t __attribute__((mode(TI)));
  709. int func(uint64_t a, uint64_t b) {
  710. uint128_t c = ((uint128_t)a) * b;
  711. int ok = ((uint64_t)(c>>96)) == 522859 &&
  712. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  713. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  714. (((uint64_t)(c))&0xffffffffL) == 0;
  715. return ok;
  716. }
  717. ], [dnl
  718. int ok = func( ((uint64_t)2000000000) * 1000000000,
  719. ((uint64_t)1234567890) << 24);
  720. return !ok;
  721. ])],
  722. [tor_cv_can_use_curve25519_donna_c64=yes],
  723. [tor_cv_can_use_curve25519_donna_c64=no],
  724. [AC_LINK_IFELSE(
  725. [AC_LANG_PROGRAM([dnl
  726. #include <stdint.h>
  727. typedef unsigned uint128_t __attribute__((mode(TI)));
  728. int func(uint64_t a, uint64_t b) {
  729. uint128_t c = ((uint128_t)a) * b;
  730. int ok = ((uint64_t)(c>>96)) == 522859 &&
  731. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  732. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  733. (((uint64_t)(c))&0xffffffffL) == 0;
  734. return ok;
  735. }
  736. ], [dnl
  737. int ok = func( ((uint64_t)2000000000) * 1000000000,
  738. ((uint64_t)1234567890) << 24);
  739. return !ok;
  740. ])],
  741. [tor_cv_can_use_curve25519_donna_c64=cross],
  742. [tor_cv_can_use_curve25519_donna_c64=no])])])
  743. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  744. nacl/crypto_scalarmult_curve25519.h])
  745. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  746. tor_cv_can_use_curve25519_nacl,
  747. [tor_saved_LIBS="$LIBS"
  748. LIBS="$LIBS -lnacl"
  749. AC_LINK_IFELSE(
  750. [AC_LANG_PROGRAM([dnl
  751. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  752. #include <crypto_scalarmult_curve25519.h>
  753. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  754. #include <nacl/crypto_scalarmult_curve25519.h>
  755. #endif
  756. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  757. #error Hey, this is the reference implementation! That's not fast.
  758. #endif
  759. ], [
  760. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  761. ])], [tor_cv_can_use_curve25519_nacl=yes],
  762. [tor_cv_can_use_curve25519_nacl=no])
  763. LIBS="$tor_saved_LIBS" ])
  764. dnl Okay, now we need to figure out which one to actually use. Fall back
  765. dnl to curve25519-donna.c
  766. if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
  767. build_curve25519_donna_c64=yes
  768. use_curve25519_donna=yes
  769. elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
  770. use_curve25519_nacl=yes
  771. CURVE25519_LIBS=-lnacl
  772. else
  773. build_curve25519_donna=yes
  774. use_curve25519_donna=yes
  775. fi
  776. if test x$use_curve25519_donna = xyes; then
  777. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  778. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  779. fi
  780. if test x$use_curve25519_nacl = xyes; then
  781. AC_DEFINE(USE_CURVE25519_NACL, 1,
  782. [Defined if we should use a curve25519 from nacl])
  783. fi
  784. AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
  785. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
  786. AC_SUBST(CURVE25519_LIBS)
  787. dnl Make sure to enable support for large off_t if available.
  788. AC_SYS_LARGEFILE
  789. AC_CHECK_HEADERS(
  790. assert.h \
  791. errno.h \
  792. fcntl.h \
  793. signal.h \
  794. string.h \
  795. sys/fcntl.h \
  796. sys/stat.h \
  797. sys/time.h \
  798. sys/types.h \
  799. time.h \
  800. unistd.h
  801. , , 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.))
  802. dnl These headers are not essential
  803. AC_CHECK_HEADERS(
  804. arpa/inet.h \
  805. crt_externs.h \
  806. execinfo.h \
  807. grp.h \
  808. ifaddrs.h \
  809. inttypes.h \
  810. limits.h \
  811. linux/types.h \
  812. machine/limits.h \
  813. malloc.h \
  814. malloc/malloc.h \
  815. malloc_np.h \
  816. netdb.h \
  817. netinet/in.h \
  818. netinet/in6.h \
  819. pwd.h \
  820. stdint.h \
  821. sys/eventfd.h \
  822. sys/file.h \
  823. sys/ioctl.h \
  824. sys/limits.h \
  825. sys/mman.h \
  826. sys/param.h \
  827. sys/prctl.h \
  828. sys/resource.h \
  829. sys/select.h \
  830. sys/socket.h \
  831. sys/sysctl.h \
  832. sys/syslimits.h \
  833. sys/time.h \
  834. sys/types.h \
  835. sys/un.h \
  836. sys/utime.h \
  837. sys/wait.h \
  838. syslog.h \
  839. utime.h
  840. )
  841. AC_CHECK_HEADERS(sys/param.h)
  842. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  843. [#ifdef HAVE_SYS_TYPES_H
  844. #include <sys/types.h>
  845. #endif
  846. #ifdef HAVE_SYS_SOCKET_H
  847. #include <sys/socket.h>
  848. #endif])
  849. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  850. [#ifdef HAVE_SYS_TYPES_H
  851. #include <sys/types.h>
  852. #endif
  853. #ifdef HAVE_SYS_SOCKET_H
  854. #include <sys/socket.h>
  855. #endif
  856. #ifdef HAVE_NET_IF_H
  857. #include <net/if.h>
  858. #endif])
  859. AC_CHECK_HEADERS(linux/if.h,[],[],
  860. [
  861. #ifdef HAVE_SYS_SOCKET_H
  862. #include <sys/socket.h>
  863. #endif
  864. ])
  865. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  866. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  867. [#ifdef HAVE_SYS_TYPES_H
  868. #include <sys/types.h>
  869. #endif
  870. #ifdef HAVE_SYS_SOCKET_H
  871. #include <sys/socket.h>
  872. #endif
  873. #ifdef HAVE_LIMITS_H
  874. #include <limits.h>
  875. #endif
  876. #ifdef HAVE_LINUX_TYPES_H
  877. #include <linux/types.h>
  878. #endif
  879. #ifdef HAVE_NETINET_IN6_H
  880. #include <netinet/in6.h>
  881. #endif
  882. #ifdef HAVE_NETINET_IN_H
  883. #include <netinet/in.h>
  884. #endif])
  885. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  886. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=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. #ifdef HAVE_LINUX_IF_H
  906. #include <linux/if.h>
  907. #endif])
  908. if test x$transparent = xtrue ; then
  909. transparent_ok=0
  910. if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
  911. transparent_ok=1
  912. fi
  913. if test x$linux_netfilter_ipv4 = x1 ; then
  914. transparent_ok=1
  915. fi
  916. if test x$linux_netfilter_ipv6_ip6_tables = x1 ; then
  917. transparent_ok=1
  918. fi
  919. if test x$transparent_ok = x1 ; then
  920. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  921. case $host in
  922. *-*-openbsd* | *-*-bitrig*)
  923. AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
  924. esac
  925. else
  926. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  927. fi
  928. fi
  929. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  930. [#ifdef HAVE_SYS_TYPES_H
  931. #include <sys/types.h>
  932. #endif
  933. #ifdef HAVE_SYS_TIME_H
  934. #include <sys/time.h>
  935. #endif])
  936. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  937. dnl Watch out.
  938. AC_CHECK_SIZEOF(int8_t)
  939. AC_CHECK_SIZEOF(int16_t)
  940. AC_CHECK_SIZEOF(int32_t)
  941. AC_CHECK_SIZEOF(int64_t)
  942. AC_CHECK_SIZEOF(uint8_t)
  943. AC_CHECK_SIZEOF(uint16_t)
  944. AC_CHECK_SIZEOF(uint32_t)
  945. AC_CHECK_SIZEOF(uint64_t)
  946. AC_CHECK_SIZEOF(intptr_t)
  947. AC_CHECK_SIZEOF(uintptr_t)
  948. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  949. AC_CHECK_SIZEOF(char)
  950. AC_CHECK_SIZEOF(short)
  951. AC_CHECK_SIZEOF(int)
  952. AC_CHECK_SIZEOF(long)
  953. AC_CHECK_SIZEOF(long long)
  954. AC_CHECK_SIZEOF(__int64)
  955. AC_CHECK_SIZEOF(void *)
  956. AC_CHECK_SIZEOF(time_t)
  957. AC_CHECK_SIZEOF(size_t)
  958. AC_CHECK_SIZEOF(pid_t)
  959. AC_CHECK_TYPES([uint, u_char, ssize_t])
  960. AC_PC_FROM_UCONTEXT([/bin/true])
  961. dnl used to include sockaddr_storage, but everybody has that.
  962. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  963. [#ifdef HAVE_SYS_TYPES_H
  964. #include <sys/types.h>
  965. #endif
  966. #ifdef HAVE_NETINET_IN_H
  967. #include <netinet/in.h>
  968. #endif
  969. #ifdef HAVE_NETINET_IN6_H
  970. #include <netinet/in6.h>
  971. #endif
  972. #ifdef HAVE_SYS_SOCKET_H
  973. #include <sys/socket.h>
  974. #endif
  975. #ifdef _WIN32
  976. #define _WIN32_WINNT 0x0501
  977. #define WIN32_LEAN_AND_MEAN
  978. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  979. #include <winsock.h>
  980. #else
  981. #include <winsock2.h>
  982. #include <ws2tcpip.h>
  983. #endif
  984. #endif
  985. ])
  986. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  987. [#ifdef HAVE_SYS_TYPES_H
  988. #include <sys/types.h>
  989. #endif
  990. #ifdef HAVE_NETINET_IN_H
  991. #include <netinet/in.h>
  992. #endif
  993. #ifdef HAVE_NETINET_IN6_H
  994. #include <netinet/in6.h>
  995. #endif
  996. #ifdef HAVE_SYS_SOCKET_H
  997. #include <sys/socket.h>
  998. #endif
  999. #ifdef _WIN32
  1000. #define _WIN32_WINNT 0x0501
  1001. #define WIN32_LEAN_AND_MEAN
  1002. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  1003. #include <winsock.h>
  1004. #else
  1005. #include <winsock2.h>
  1006. #include <ws2tcpip.h>
  1007. #endif
  1008. #endif
  1009. ])
  1010. AC_CHECK_TYPES([rlim_t], , ,
  1011. [#ifdef HAVE_SYS_TYPES_H
  1012. #include <sys/types.h>
  1013. #endif
  1014. #ifdef HAVE_SYS_TIME_H
  1015. #include <sys/time.h>
  1016. #endif
  1017. #ifdef HAVE_SYS_RESOURCE_H
  1018. #include <sys/resource.h>
  1019. #endif
  1020. ])
  1021. AX_CHECK_SIGN([time_t],
  1022. [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
  1023. [ : ], [
  1024. #ifdef HAVE_SYS_TYPES_H
  1025. #include <sys/types.h>
  1026. #endif
  1027. #ifdef HAVE_SYS_TIME_H
  1028. #include <sys/time.h>
  1029. #endif
  1030. #ifdef HAVE_TIME_H
  1031. #include <time.h>
  1032. #endif
  1033. ])
  1034. if test "$ax_cv_decl_time_t_signed" = no; then
  1035. AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
  1036. fi
  1037. AX_CHECK_SIGN([size_t],
  1038. [ tor_cv_size_t_signed=yes ],
  1039. [ tor_cv_size_t_signed=no ], [
  1040. #ifdef HAVE_SYS_TYPES_H
  1041. #include <sys/types.h>
  1042. #endif
  1043. ])
  1044. if test "$ax_cv_decl_size_t_signed" = yes; then
  1045. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1046. fi
  1047. AX_CHECK_SIGN([enum always],
  1048. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1049. [ : ], [
  1050. enum always { AAA, BBB, CCC };
  1051. ])
  1052. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1053. #ifdef HAVE_SYS_SOCKET_H
  1054. #include <sys/socket.h>
  1055. #endif
  1056. ])
  1057. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1058. AC_CHECK_SIZEOF(cell_t)
  1059. # Now make sure that NULL can be represented as zero bytes.
  1060. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1061. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1062. [[#include <stdlib.h>
  1063. #include <string.h>
  1064. #include <stdio.h>
  1065. #ifdef HAVE_STDDEF_H
  1066. #include <stddef.h>
  1067. #endif
  1068. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1069. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1070. [tor_cv_null_is_zero=yes],
  1071. [tor_cv_null_is_zero=no],
  1072. [tor_cv_null_is_zero=cross])])
  1073. if test "$tor_cv_null_is_zero" = cross ; then
  1074. # Cross-compiling; let's hope that the target isn't raving mad.
  1075. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1076. fi
  1077. if test "$tor_cv_null_is_zero" != no; then
  1078. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1079. [Define to 1 iff memset(0) sets pointers to NULL])
  1080. fi
  1081. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1082. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1083. [[#include <stdlib.h>
  1084. #include <string.h>
  1085. #include <stdio.h>
  1086. #ifdef HAVE_STDDEF_H
  1087. #include <stddef.h>
  1088. #endif
  1089. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1090. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1091. [tor_cv_dbl0_is_zero=yes],
  1092. [tor_cv_dbl0_is_zero=no],
  1093. [tor_cv_dbl0_is_zero=cross])])
  1094. if test "$tor_cv_dbl0_is_zero" = cross ; then
  1095. # Cross-compiling; let's hope that the target isn't raving mad.
  1096. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1097. fi
  1098. if test "$tor_cv_dbl0_is_zero" != no; then
  1099. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1100. [Define to 1 iff memset(0) sets doubles to 0.0])
  1101. fi
  1102. # And what happens when we malloc zero?
  1103. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1104. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1105. [[#include <stdlib.h>
  1106. #include <string.h>
  1107. #include <stdio.h>
  1108. #ifdef HAVE_STDDEF_H
  1109. #include <stddef.h>
  1110. #endif
  1111. int main () { return malloc(0)?0:1; }]])],
  1112. [tor_cv_malloc_zero_works=yes],
  1113. [tor_cv_malloc_zero_works=no],
  1114. [tor_cv_malloc_zero_works=cross])])
  1115. if test "$tor_cv_malloc_zero_works" = cross; then
  1116. # Cross-compiling; let's hope that the target isn't raving mad.
  1117. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1118. fi
  1119. if test "$tor_cv_malloc_zero_works" = yes; then
  1120. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1121. [Define to 1 iff malloc(0) returns a pointer])
  1122. fi
  1123. # whether we seem to be in a 2s-complement world.
  1124. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1125. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1126. [[int main () { int problem = ((-99) != (~99)+1);
  1127. return problem ? 1 : 0; }]])],
  1128. [tor_cv_twos_complement=yes],
  1129. [tor_cv_twos_complement=no],
  1130. [tor_cv_twos_complement=cross])])
  1131. if test "$tor_cv_twos_complement" = cross ; then
  1132. # Cross-compiling; let's hope that the target isn't raving mad.
  1133. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1134. fi
  1135. if test "$tor_cv_twos_complement" != no ; then
  1136. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1137. [Define to 1 iff we represent negative integers with two's complement])
  1138. fi
  1139. # What does shifting a negative value do?
  1140. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1141. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1142. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1143. [tor_cv_sign_extend=yes],
  1144. [tor_cv_sign_extend=no],
  1145. [tor_cv_sign_extend=cross])])
  1146. if test "$tor_cv_sign_extend" = cross ; then
  1147. # Cross-compiling; let's hope that the target isn't raving mad.
  1148. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1149. fi
  1150. if test "$tor_cv_sign_extend" != no ; then
  1151. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1152. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1153. fi
  1154. # Whether we should use the dmalloc memory allocation debugging library.
  1155. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1156. AC_ARG_WITH(dmalloc,
  1157. AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
  1158. [if [[ "$withval" = "yes" ]]; then
  1159. dmalloc=1
  1160. AC_MSG_RESULT(yes)
  1161. else
  1162. dmalloc=1
  1163. AC_MSG_RESULT(no)
  1164. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1165. )
  1166. if [[ $dmalloc -eq 1 ]]; then
  1167. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1168. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1169. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1170. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1171. fi
  1172. AC_ARG_WITH(tcmalloc,
  1173. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
  1174. [ tcmalloc=yes ], [ tcmalloc=no ])
  1175. if test x$tcmalloc = xyes ; then
  1176. LDFLAGS="-ltcmalloc $LDFLAGS"
  1177. fi
  1178. using_custom_malloc=no
  1179. if test x$enable_openbsd_malloc = xyes ; then
  1180. using_custom_malloc=yes
  1181. fi
  1182. if test x$tcmalloc = xyes ; then
  1183. using_custom_malloc=yes
  1184. fi
  1185. if test $using_custom_malloc = no ; then
  1186. AC_CHECK_FUNCS(mallinfo)
  1187. fi
  1188. # By default, we're going to assume we don't have mlockall()
  1189. # bionic and other platforms have various broken mlockall subsystems.
  1190. # Some systems don't have a working mlockall, some aren't linkable,
  1191. # and some have it but don't declare it.
  1192. AC_CHECK_FUNCS(mlockall)
  1193. AC_CHECK_DECLS([mlockall], , , [
  1194. #ifdef HAVE_SYS_MMAN_H
  1195. #include <sys/mman.h>
  1196. #endif])
  1197. # Allow user to specify an alternate syslog facility
  1198. AC_ARG_WITH(syslog-facility,
  1199. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1200. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1201. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1202. AC_SUBST(LOGFACILITY)
  1203. # Check if we have getresuid and getresgid
  1204. AC_CHECK_FUNCS(getresuid getresgid)
  1205. # Check for gethostbyname_r in all its glorious incompatible versions.
  1206. # (This logic is based on that in Python's configure.in)
  1207. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1208. [Define this if you have any gethostbyname_r()])
  1209. AC_CHECK_FUNC(gethostbyname_r, [
  1210. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1211. OLD_CFLAGS=$CFLAGS
  1212. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1213. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
  1214. #include <netdb.h>
  1215. ], [[
  1216. char *cp1, *cp2;
  1217. struct hostent *h1, *h2;
  1218. int i1, i2;
  1219. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1220. ]])],[
  1221. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1222. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1223. [Define this if gethostbyname_r takes 6 arguments])
  1224. AC_MSG_RESULT(6)
  1225. ], [
  1226. AC_TRY_COMPILE([
  1227. #include <netdb.h>
  1228. ], [
  1229. char *cp1, *cp2;
  1230. struct hostent *h1;
  1231. int i1, i2;
  1232. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1233. ], [
  1234. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1235. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1236. [Define this if gethostbyname_r takes 5 arguments])
  1237. AC_MSG_RESULT(5)
  1238. ], [
  1239. AC_TRY_COMPILE([
  1240. #include <netdb.h>
  1241. ], [
  1242. char *cp1;
  1243. struct hostent *h1;
  1244. struct hostent_data hd;
  1245. (void) gethostbyname_r(cp1,h1,&hd);
  1246. ], [
  1247. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1248. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1249. [Define this if gethostbyname_r takes 3 arguments])
  1250. AC_MSG_RESULT(3)
  1251. ], [
  1252. AC_MSG_RESULT(0)
  1253. ])
  1254. ])
  1255. ])
  1256. CFLAGS=$OLD_CFLAGS
  1257. ])
  1258. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1259. tor_cv_have_func_macro,
  1260. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1261. #include <stdio.h>
  1262. int main(int c, char **v) { puts(__func__); }])],
  1263. tor_cv_have_func_macro=yes,
  1264. tor_cv_have_func_macro=no))
  1265. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1266. tor_cv_have_FUNC_macro,
  1267. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1268. #include <stdio.h>
  1269. int main(int c, char **v) { puts(__FUNC__); }])],
  1270. tor_cv_have_FUNC_macro=yes,
  1271. tor_cv_have_FUNC_macro=no))
  1272. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1273. tor_cv_have_FUNCTION_macro,
  1274. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1275. #include <stdio.h>
  1276. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1277. tor_cv_have_FUNCTION_macro=yes,
  1278. tor_cv_have_FUNCTION_macro=no))
  1279. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1280. tor_cv_have_environ_declared,
  1281. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1282. /* We define _GNU_SOURCE here because it is also defined in compat.c.
  1283. * Without it environ doesn't get declared. */
  1284. #define _GNU_SOURCE
  1285. #ifdef HAVE_UNISTD_H
  1286. #include <unistd.h>
  1287. #endif
  1288. #include <stdlib.h>
  1289. int main(int c, char **v) { char **t = environ; }])],
  1290. tor_cv_have_environ_declared=yes,
  1291. tor_cv_have_environ_declared=no))
  1292. if test "$tor_cv_have_func_macro" = 'yes'; then
  1293. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1294. fi
  1295. if test "$tor_cv_have_FUNC_macro" = 'yes'; then
  1296. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1297. fi
  1298. if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
  1299. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1300. [Defined if the compiler supports __FUNCTION__])
  1301. fi
  1302. if test "$tor_cv_have_environ_declared" = 'yes'; then
  1303. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1304. [Defined if we have extern char **environ already declared])
  1305. fi
  1306. # $prefix stores the value of the --prefix command line option, or
  1307. # NONE if the option wasn't set. In the case that it wasn't set, make
  1308. # it be the default, so that we can use it to expand directories now.
  1309. if test "x$prefix" = "xNONE"; then
  1310. prefix=$ac_default_prefix
  1311. fi
  1312. # and similarly for $exec_prefix
  1313. if test "x$exec_prefix" = "xNONE"; then
  1314. exec_prefix=$prefix
  1315. fi
  1316. if test "x$BUILDDIR" = "x"; then
  1317. BUILDDIR=`pwd`
  1318. fi
  1319. AC_SUBST(BUILDDIR)
  1320. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1321. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1322. if test "x$CONFDIR" = "x"; then
  1323. CONFDIR=`eval echo $sysconfdir/tor`
  1324. fi
  1325. AC_SUBST(CONFDIR)
  1326. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1327. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1328. BINDIR=`eval echo $bindir`
  1329. AC_SUBST(BINDIR)
  1330. LOCALSTATEDIR=`eval echo $localstatedir`
  1331. AC_SUBST(LOCALSTATEDIR)
  1332. if test "$bwin32" = true; then
  1333. # Test if the linker supports the --nxcompat and --dynamicbase options
  1334. # for Windows
  1335. save_LDFLAGS="$LDFLAGS"
  1336. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1337. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1338. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1339. [AC_MSG_RESULT([yes])]
  1340. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1341. [AC_MSG_RESULT([no])]
  1342. )
  1343. LDFLAGS="$save_LDFLAGS"
  1344. fi
  1345. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1346. # than autoconf's macros like.
  1347. if test "$GCC" = yes; then
  1348. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1349. # accident waiting to happen.
  1350. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1351. else
  1352. # Override optimization level for non-gcc compilers
  1353. CFLAGS="$CFLAGS -O"
  1354. enable_gcc_warnings=no
  1355. enable_gcc_warnings_advisory=no
  1356. fi
  1357. # OS X Lion started deprecating the system openssl. Let's just disable
  1358. # all deprecation warnings on OS X. Also, to potentially make the binary
  1359. # a little smaller, let's enable dead_strip.
  1360. case "$host_os" in
  1361. darwin*)
  1362. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1363. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1364. esac
  1365. # Add some more warnings which we use in development but not in the
  1366. # released versions. (Some relevant gcc versions can't handle these.)
  1367. if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
  1368. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1369. #if !defined(__GNUC__) || (__GNUC__ < 4)
  1370. #error
  1371. #endif])], have_gcc4=yes, have_gcc4=no)
  1372. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1373. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
  1374. #error
  1375. #endif])], have_gcc42=yes, have_gcc42=no)
  1376. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1377. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
  1378. #error
  1379. #endif])], have_gcc43=yes, have_gcc43=no)
  1380. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1381. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
  1382. #error
  1383. #endif])], have_gcc46=yes, have_gcc46=no)
  1384. save_CFLAGS="$CFLAGS"
  1385. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1386. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
  1387. have_shorten64_flag=no)
  1388. CFLAGS="$save_CFLAGS"
  1389. case $host in
  1390. *-*-openbsd* | *-*-bitrig*)
  1391. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1392. # That's fine, except that the headers don't pass -Wredundant-decls.
  1393. # Therefore, let's disable -Wsystem-headers when we're building
  1394. # with maximal warnings on OpenBSD.
  1395. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1396. esac
  1397. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1398. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1399. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1400. CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
  1401. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1402. if test x$enable_gcc_warnings = xyes; then
  1403. CFLAGS="$CFLAGS -Werror"
  1404. fi
  1405. # Disabled, so we can use mallinfo(): -Waggregate-return
  1406. if test x$have_gcc4 = xyes ; then
  1407. # These warnings break gcc 3.3.5 and work on gcc 4.0.2
  1408. CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wold-style-definition"
  1409. fi
  1410. if test x$have_gcc42 = xyes ; then
  1411. # These warnings break gcc 4.0.2 and work on gcc 4.2
  1412. # XXXX020 See if any of these work with earlier versions.
  1413. CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
  1414. # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
  1415. fi
  1416. if test x$have_gcc42 = xyes && test x$have_clang = xno; then
  1417. # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
  1418. CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
  1419. fi
  1420. if test x$have_gcc43 = xyes ; then
  1421. # These warnings break gcc 4.2 and work on gcc 4.3
  1422. # XXXX020 See if any of these work with earlier versions.
  1423. CFLAGS="$CFLAGS -Wextra -Warray-bounds"
  1424. fi
  1425. if test x$have_gcc46 = xyes ; then
  1426. # This warning was added in gcc 4.3, but it appears to generate
  1427. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1428. CFLAGS="$CFLAGS -Wlogical-op"
  1429. fi
  1430. if test x$have_shorten64_flag = xyes ; then
  1431. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1432. fi
  1433. ##This will break the world on some 64-bit architectures
  1434. # CFLAGS="$CFLAGS -Winline"
  1435. fi
  1436. if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
  1437. case "$host_os" in
  1438. darwin*)
  1439. 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.])
  1440. esac
  1441. fi
  1442. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  1443. AC_CONFIG_FILES([
  1444. Doxyfile
  1445. Makefile
  1446. contrib/dist/suse/tor.sh
  1447. contrib/operator-tools/tor.logrotate
  1448. contrib/dist/tor.sh
  1449. contrib/dist/torctl
  1450. contrib/dist/tor.service
  1451. src/config/torrc.sample
  1452. src/config/torrc.minimal
  1453. scripts/maint/checkOptionDocs.pl
  1454. scripts/maint/updateVersions.pl
  1455. ])
  1456. if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
  1457. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  1458. for file in $regular_mans ; do
  1459. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  1460. echo "==================================";
  1461. echo;
  1462. echo "Building Tor has failed since manpages cannot be built.";
  1463. echo;
  1464. echo "You need asciidoc installed to be able to build the manpages.";
  1465. echo "To build without manpages, use the --disable-asciidoc argument";
  1466. echo "when calling configure.";
  1467. echo;
  1468. echo "==================================";
  1469. exit 1;
  1470. fi
  1471. done
  1472. fi
  1473. AC_OUTPUT