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