configure.ac 51 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) 2007-2013, The Tor Project, Inc.
  4. dnl See LICENSE for licensing information
  5. AC_INIT([tor],[0.2.6.0-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. if test -f /etc/redhat-release ; then
  13. if test -f /usr/kerberos/include ; then
  14. CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
  15. fi
  16. fi
  17. # Not a no-op; we want to make sure that CPPFLAGS is set before we use
  18. # the += operator on it in src/or/Makefile.am
  19. CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
  20. #XXXX020 We should make these enabled or not, before 0.2.0.x-final
  21. AC_ARG_ENABLE(buf-freelists,
  22. AS_HELP_STRING(--enable-buf-freelists, enable freelists for buffer RAM))
  23. AC_ARG_ENABLE(mempools,
  24. AS_HELP_STRING(--enable-mempools, enable mempools for relay cells))
  25. AC_ARG_ENABLE(openbsd-malloc,
  26. AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd. Linux only))
  27. AC_ARG_ENABLE(instrument-downloads,
  28. AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
  29. AC_ARG_ENABLE(static-openssl,
  30. AS_HELP_STRING(--enable-static-openssl, Link against a static openssl library. Requires --with-openssl-dir))
  31. AC_ARG_ENABLE(static-libevent,
  32. AS_HELP_STRING(--enable-static-libevent, Link against a static libevent library. Requires --with-libevent-dir))
  33. AC_ARG_ENABLE(static-zlib,
  34. AS_HELP_STRING(--enable-static-zlib, Link against a static zlib library. Requires --with-zlib-dir))
  35. AC_ARG_ENABLE(static-tor,
  36. AS_HELP_STRING(--enable-static-tor, Create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir))
  37. AC_ARG_ENABLE(curve25519,
  38. AS_HELP_STRING(--disable-curve25519, Build Tor with no curve25519 elliptic-curve crypto support))
  39. AC_ARG_ENABLE(unittests,
  40. AS_HELP_STRING(--disable-unittests, [Don't build unit tests for Tor. Risky!]))
  41. AC_ARG_ENABLE(coverage,
  42. AS_HELP_STRING(--enable-coverage, [Enable coverage support in the unit-test build]))
  43. AM_CONDITIONAL(UNITTESTS_ENABLED, test x$enable_unittests != xno)
  44. AM_CONDITIONAL(COVERAGE_ENABLED, test x$enable_coverage = xyes)
  45. if test "$enable_static_tor" = "yes"; then
  46. enable_static_libevent="yes";
  47. enable_static_openssl="yes";
  48. enable_static_zlib="yes";
  49. CFLAGS="$CFLAGS -static"
  50. fi
  51. if test x$enable_buf_freelists = xyes; then
  52. AC_DEFINE(ENABLE_BUF_FREELISTS, 1,
  53. [Defined if we try to use freelists for buffer RAM chunks])
  54. fi
  55. AM_CONDITIONAL(USE_MEMPOOLS, test x$enable_mempools = xyes)
  56. if test x$enable_mempools = xyes; then
  57. AC_DEFINE(ENABLE_MEMPOOLS, 1,
  58. [Defined if we try to use mempools for cells being relayed])
  59. fi
  60. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
  61. if test x$enable_instrument_downloads = xyes; then
  62. AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
  63. [Defined if we want to keep track of how much of each kind of resource we download.])
  64. fi
  65. AC_ARG_ENABLE(transparent,
  66. AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
  67. [case "${enableval}" in
  68. yes) transparent=true ;;
  69. no) transparent=false ;;
  70. *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
  71. esac], [transparent=true])
  72. AC_ARG_ENABLE(asciidoc,
  73. AS_HELP_STRING(--disable-asciidoc, don't use asciidoc (disables building of manpages)),
  74. [case "${enableval}" in
  75. yes) asciidoc=true ;;
  76. no) asciidoc=false ;;
  77. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  78. esac], [asciidoc=true])
  79. # By default, we're not ready to ship a NAT-PMP aware Tor
  80. AC_ARG_ENABLE(nat-pmp,
  81. AS_HELP_STRING(--enable-nat-pmp, enable NAT-PMP support),
  82. [case "${enableval}" in
  83. yes) natpmp=true ;;
  84. no) natpmp=false ;;
  85. * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
  86. esac], [natpmp=false])
  87. # By default, we're not ready to ship a UPnP aware Tor
  88. AC_ARG_ENABLE(upnp,
  89. AS_HELP_STRING(--enable-upnp, enable UPnP support),
  90. [case "${enableval}" in
  91. yes) upnp=true ;;
  92. no) upnp=false ;;
  93. * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
  94. esac], [upnp=false])
  95. case $host in
  96. *-*-solaris* )
  97. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  98. ;;
  99. esac
  100. AC_ARG_ENABLE(gcc-warnings,
  101. AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
  102. AC_ARG_ENABLE(gcc-warnings-advisory,
  103. AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
  104. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  105. AC_ARG_ENABLE(gcc-hardening,
  106. AS_HELP_STRING(--disable-gcc-hardening, disable compiler security checks))
  107. AC_ARG_ENABLE(expensive-hardening,
  108. AS_HELP_STRING(--enable-expensive-hardening, enable more expensive compiler hardening; makes Tor slower))
  109. dnl Linker hardening options
  110. dnl Currently these options are ELF specific - you can't use this with MacOSX
  111. AC_ARG_ENABLE(linker-hardening,
  112. AS_HELP_STRING(--disable-linker-hardening, disable linker security fixups))
  113. AC_ARG_ENABLE(local-appdata,
  114. AS_HELP_STRING(--enable-local-appdata, default to host local application data paths on Windows))
  115. if test "$enable_local_appdata" = "yes"; then
  116. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  117. [Defined if we default to host local appdata paths on Windows])
  118. fi
  119. # Tor2web mode flag
  120. AC_ARG_ENABLE(tor2web-mode,
  121. AS_HELP_STRING(--enable-tor2web-mode, support tor2web non-anonymous mode),
  122. [if test x$enableval = xyes; then
  123. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  124. fi])
  125. AC_ARG_ENABLE(bufferevents,
  126. AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))
  127. AC_ARG_ENABLE(tool-name-check,
  128. AS_HELP_STRING(--disable-tool-name-check, check for sanely named toolchain when cross-compiling))
  129. AC_ARG_ENABLE(seccomp,
  130. AS_HELP_STRING(--disable-seccomp, do not attempt to use libseccomp))
  131. AC_ARG_ENABLE(libscrypt,
  132. AS_HELP_STRING(--disable-libscrypt, do not attempt to use libscrypt))
  133. dnl check for the correct "ar" when cross-compiling
  134. AN_MAKEVAR([AR], [AC_PROG_AR])
  135. AN_PROGRAM([ar], [AC_PROG_AR])
  136. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
  137. AC_PROG_AR
  138. dnl Check whether the above macro has settled for a simply named tool even
  139. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  140. dnl because that will find any cc on the system, not only the cross-compiler,
  141. dnl and then verify that a binary built with this compiler runs on the
  142. dnl build system. It will then come to the false conclusion that we're not
  143. dnl cross-compiling.
  144. if test x$enable_tool_name_check != xno; then
  145. if test x$ac_tool_warned = xyes; then
  146. 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.)])
  147. elif test "x$ac_ct_AR" != x -a x$cross_compiling = xmaybe; then
  148. 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.)])
  149. fi
  150. fi
  151. AC_PROG_CC
  152. AC_PROG_CPP
  153. AC_PROG_MAKE_SET
  154. AC_PROG_RANLIB
  155. dnl autoconf 2.59 appears not to support AC_PROG_SED
  156. AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
  157. dnl check for asciidoc and a2x
  158. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  159. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  160. AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
  161. AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
  162. AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
  163. AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
  164. AM_PROG_CC_C_O
  165. AC_PROG_CC_C99
  166. AC_ARG_VAR(PYTHON)
  167. AC_CHECK_PROGS(PYTHON, [python python2 python2.7 python3 python3.3])
  168. if test "x$PYTHON" = "x"; then
  169. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  170. fi
  171. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  172. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  173. AC_C_FLEXIBLE_ARRAY_MEMBER
  174. ], [
  175. dnl Maybe we've got an old autoconf...
  176. AC_CACHE_CHECK([for flexible array members],
  177. tor_cv_c_flexarray,
  178. [AC_COMPILE_IFELSE(
  179. AC_LANG_PROGRAM([
  180. struct abc { int a; char b[]; };
  181. ], [
  182. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  183. def->b[0] = 33;
  184. ]),
  185. [tor_cv_c_flexarray=yes],
  186. [tor_cv_c_flexarray=no])])
  187. if test $tor_cv_flexarray = yes ; then
  188. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  189. else
  190. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  191. fi
  192. ])
  193. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  194. tor_cv_c_c99_decl,
  195. [AC_COMPILE_IFELSE(
  196. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  197. [tor_cv_c_c99_decl=yes],
  198. [tor_cv_c_c99_decl=no] )])
  199. if test "$tor_cv_c_c99_decl" != "yes"; then
  200. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  201. fi
  202. AC_CACHE_CHECK([for working C99 designated initializers],
  203. tor_cv_c_c99_designated_init,
  204. [AC_COMPILE_IFELSE(
  205. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  206. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  207. [tor_cv_c_c99_designated_init=yes],
  208. [tor_cv_c_c99_designated_init=no] )])
  209. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  210. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  211. fi
  212. AC_PATH_PROG([SHA1SUM], [sha1sum], none)
  213. AC_PATH_PROG([OPENSSL], [openssl], none)
  214. TORUSER=_tor
  215. AC_ARG_WITH(tor-user,
  216. [ --with-tor-user=NAME Specify username for tor daemon ],
  217. [
  218. TORUSER=$withval
  219. ]
  220. )
  221. AC_SUBST(TORUSER)
  222. TORGROUP=_tor
  223. AC_ARG_WITH(tor-group,
  224. [ --with-tor-group=NAME Specify group name for tor daemon ],
  225. [
  226. TORGROUP=$withval
  227. ]
  228. )
  229. AC_SUBST(TORGROUP)
  230. dnl If _WIN32 is defined and non-zero, we are building for win32
  231. AC_MSG_CHECKING([for win32])
  232. AC_RUN_IFELSE([AC_LANG_SOURCE([
  233. int main(int c, char **v) {
  234. #ifdef _WIN32
  235. #if _WIN32
  236. return 0;
  237. #else
  238. return 1;
  239. #endif
  240. #else
  241. return 2;
  242. #endif
  243. }])],
  244. bwin32=true; AC_MSG_RESULT([yes]),
  245. bwin32=false; AC_MSG_RESULT([no]),
  246. bwin32=cross; AC_MSG_RESULT([cross])
  247. )
  248. if test "$bwin32" = cross; then
  249. AC_MSG_CHECKING([for win32 (cross)])
  250. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  251. #ifdef _WIN32
  252. int main(int c, char **v) {return 0;}
  253. #else
  254. #error
  255. int main(int c, char **v) {return x(y);}
  256. #endif
  257. ])],
  258. bwin32=true; AC_MSG_RESULT([yes]),
  259. bwin32=false; AC_MSG_RESULT([no]))
  260. fi
  261. AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
  262. dnl Enable C99 when compiling with MIPSpro
  263. AC_MSG_CHECKING([for MIPSpro compiler])
  264. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  265. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  266. #error
  267. return x(y);
  268. #endif
  269. ])],
  270. bmipspro=false; AC_MSG_RESULT(no),
  271. bmipspro=true; AC_MSG_RESULT(yes))
  272. if test "$bmipspro" = true; then
  273. CFLAGS="$CFLAGS -c99"
  274. fi
  275. AC_C_BIGENDIAN
  276. AC_SEARCH_LIBS(socket, [socket network])
  277. AC_SEARCH_LIBS(gethostbyname, [nsl])
  278. AC_SEARCH_LIBS(dlopen, [dl])
  279. AC_SEARCH_LIBS(inet_aton, [resolv])
  280. saved_LIBS="$LIBS"
  281. AC_SEARCH_LIBS([clock_gettime], [rt])
  282. if test "$LIBS" != "$saved_LIBS"; then
  283. # Looks like we need -lrt for clock_gettime().
  284. have_rt=yes
  285. fi
  286. AC_SEARCH_LIBS(pthread_create, [pthread])
  287. AC_SEARCH_LIBS(pthread_detach, [pthread])
  288. dnl -------------------------------------------------------------------
  289. dnl Check for functions before libevent, since libevent-1.2 apparently
  290. dnl exports strlcpy without defining it in a header.
  291. AC_CHECK_FUNCS(
  292. _NSGetEnviron \
  293. accept4 \
  294. backtrace \
  295. backtrace_symbols_fd \
  296. clock_gettime \
  297. flock \
  298. ftime \
  299. getaddrinfo \
  300. getifaddrs \
  301. getrlimit \
  302. gettimeofday \
  303. gmtime_r \
  304. inet_aton \
  305. ioctl \
  306. issetugid \
  307. llround \
  308. localtime_r \
  309. lround \
  310. memmem \
  311. prctl \
  312. rint \
  313. sigaction \
  314. socketpair \
  315. strlcat \
  316. strlcpy \
  317. strptime \
  318. strtok_r \
  319. strtoull \
  320. sysconf \
  321. sysctl \
  322. uname \
  323. usleep \
  324. vasprintf \
  325. _vscprintf
  326. )
  327. if test "$bwin32" != true; then
  328. AC_CHECK_HEADERS(pthread.h)
  329. AC_CHECK_FUNCS(pthread_create)
  330. fi
  331. dnl ------------------------------------------------------
  332. dnl Where do you live, libevent? And how do we call you?
  333. if test "$bwin32" = true; then
  334. TOR_LIB_WS32=-lws2_32
  335. TOR_LIB_IPHLPAPI=-liphlpapi
  336. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  337. # think it's actually necessary.
  338. TOR_LIB_GDI=-lgdi32
  339. else
  340. TOR_LIB_WS32=
  341. TOR_LIB_GDI=
  342. fi
  343. AC_SUBST(TOR_LIB_WS32)
  344. AC_SUBST(TOR_LIB_GDI)
  345. AC_SUBST(TOR_LIB_IPHLPAPI)
  346. dnl We need to do this before we try our disgusting hack below.
  347. AC_CHECK_HEADERS([sys/types.h])
  348. dnl This is a disgusting hack so we safely include older libevent headers.
  349. AC_CHECK_TYPE(u_int64_t, unsigned long long)
  350. AC_CHECK_TYPE(u_int32_t, unsigned long)
  351. AC_CHECK_TYPE(u_int16_t, unsigned short)
  352. AC_CHECK_TYPE(u_int8_t, unsigned char)
  353. tor_libevent_pkg_redhat="libevent"
  354. tor_libevent_pkg_debian="libevent-dev"
  355. tor_libevent_devpkg_redhat="libevent-devel"
  356. tor_libevent_devpkg_debian="libevent-dev"
  357. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  358. dnl linking for static builds.
  359. STATIC_LIBEVENT_FLAGS=""
  360. if test "$enable_static_libevent" = "yes"; then
  361. if test "$have_rt" = yes; then
  362. STATIC_LIBEVENT_FLAGS=" -lrt "
  363. fi
  364. fi
  365. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  366. #ifdef _WIN32
  367. #include <winsock2.h>
  368. #endif
  369. #include <stdlib.h>
  370. #include <sys/time.h>
  371. #include <sys/types.h>
  372. #include <event.h>], [
  373. #ifdef _WIN32
  374. #include <winsock2.h>
  375. #endif
  376. void exit(int); void *event_init(void);],
  377. [
  378. #ifdef _WIN32
  379. {WSADATA d; WSAStartup(0x101,&d); }
  380. #endif
  381. event_init(); exit(0);
  382. ], [--with-libevent-dir], [/opt/libevent])
  383. dnl Now check for particular libevent functions.
  384. save_LIBS="$LIBS"
  385. save_LDFLAGS="$LDFLAGS"
  386. save_CPPFLAGS="$CPPFLAGS"
  387. LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
  388. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  389. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  390. AC_CHECK_FUNCS([event_get_version \
  391. event_get_version_number \
  392. event_get_method \
  393. event_set_log_callback \
  394. evutil_secure_rng_set_urandom_device_file \
  395. evutil_secure_rng_init \
  396. event_base_loopexit])
  397. AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
  398. [#include <event.h>
  399. ])
  400. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  401. LIBS="$save_LIBS"
  402. LDFLAGS="$save_LDFLAGS"
  403. CPPFLAGS="$save_CPPFLAGS"
  404. AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
  405. if test "$enable_static_libevent" = "yes"; then
  406. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  407. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  408. else
  409. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  410. fi
  411. else
  412. TOR_LIBEVENT_LIBS="-levent"
  413. fi
  414. dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
  415. dnl we can do much better.
  416. if test "$enable_bufferevents" = "yes" ; then
  417. if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
  418. AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
  419. else
  420. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  421. # Check for the right version. First see if version detection works.
  422. AC_MSG_CHECKING([whether we can detect the Libevent version])
  423. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  424. #include <event2/event.h>
  425. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
  426. #error
  427. int x = y(zz);
  428. #else
  429. int x = 1;
  430. #endif
  431. ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
  432. [event_version_number_works=no; AC_MSG_RESULT([no])])
  433. if test "$event_version_number_works" != 'yes'; then
  434. AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
  435. else
  436. AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
  437. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  438. #include <event2/event.h>
  439. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
  440. #error
  441. int x = y(zz);
  442. #else
  443. int x = 1;
  444. #endif
  445. ])], [ AC_MSG_RESULT([yes]) ],
  446. [ AC_MSG_RESULT([no])
  447. AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
  448. fi
  449. fi
  450. fi
  451. LIBS="$save_LIBS"
  452. LDFLAGS="$save_LDFLAGS"
  453. CPPFLAGS="$save_CPPFLAGS"
  454. AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
  455. if test "$enable_bufferevents" = "yes"; then
  456. AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
  457. if test "$enable_static_libevent" = "yes"; then
  458. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
  459. else
  460. TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
  461. fi
  462. fi
  463. AC_SUBST(TOR_LIBEVENT_LIBS)
  464. dnl ------------------------------------------------------
  465. dnl Where do you live, libm?
  466. dnl On some platforms (Haiku/BeOS) the math library is
  467. dnl part of libroot. In which case don't link against lm
  468. TOR_LIB_MATH=""
  469. save_LIBS="$LIBS"
  470. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  471. if test "$ac_cv_search_pow" != "none required"; then
  472. TOR_LIB_MATH="$ac_cv_search_pow"
  473. fi
  474. LIBS="$save_LIBS"
  475. AC_SUBST(TOR_LIB_MATH)
  476. dnl ------------------------------------------------------
  477. dnl Where do you live, openssl? And how do we call you?
  478. tor_openssl_pkg_redhat="openssl"
  479. tor_openssl_pkg_debian="libssl-dev"
  480. tor_openssl_devpkg_redhat="openssl-devel"
  481. tor_openssl_devpkg_debian="libssl-dev"
  482. ALT_openssl_WITHVAL=""
  483. AC_ARG_WITH(ssl-dir,
  484. [ --with-ssl-dir=PATH Obsolete alias for --with-openssl-dir ],
  485. [
  486. if test "x$withval" != xno && test "x$withval" != "x" ; then
  487. ALT_openssl_WITHVAL="$withval"
  488. fi
  489. ])
  490. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
  491. [#include <openssl/rand.h>],
  492. [void RAND_add(const void *buf, int num, double entropy);],
  493. [RAND_add((void*)0,0,0); exit(0);], [],
  494. [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
  495. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  496. if test "$enable_static_openssl" = "yes"; then
  497. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  498. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  499. else
  500. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  501. fi
  502. else
  503. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  504. fi
  505. AC_SUBST(TOR_OPENSSL_LIBS)
  506. dnl ------------------------------------------------------
  507. dnl Where do you live, zlib? And how do we call you?
  508. tor_zlib_pkg_redhat="zlib"
  509. tor_zlib_pkg_debian="zlib1g"
  510. tor_zlib_devpkg_redhat="zlib-devel"
  511. tor_zlib_devpkg_debian="zlib1g-dev"
  512. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  513. [#include <zlib.h>],
  514. [const char * zlibVersion(void);],
  515. [zlibVersion(); exit(0);], [--with-zlib-dir],
  516. [/opt/zlib])
  517. if test "$enable_static_zlib" = "yes"; then
  518. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  519. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  520. using --enable-static-zlib")
  521. else
  522. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  523. fi
  524. else
  525. TOR_ZLIB_LIBS="-lz"
  526. fi
  527. AC_SUBST(TOR_ZLIB_LIBS)
  528. dnl ---------------------------------------------------------------------
  529. dnl Now that we know about our major libraries, we can check for compiler
  530. dnl and linker hardening options. We need to do this with the libraries known,
  531. dnl since sometimes the linker will like an option but not be willing to
  532. dnl use it with a build of a library.
  533. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  534. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
  535. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  536. #if !defined(__clang__)
  537. #error
  538. #endif])], have_clang=yes, have_clang=no)
  539. if test x$enable_gcc_hardening != xno; then
  540. CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
  541. if test x$have_clang = xyes; then
  542. TOR_CHECK_CFLAGS(-Qunused-arguments)
  543. fi
  544. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  545. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  546. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  547. m4_ifdef([AS_VAR_IF],[
  548. AS_VAR_IF(can_compile, [yes],
  549. AS_VAR_IF(can_link, [yes],
  550. [],
  551. 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.)]))
  552. )])
  553. AS_VAR_POPDEF([can_link])
  554. AS_VAR_POPDEF([can_compile])
  555. TOR_CHECK_CFLAGS(-Wstack-protector)
  556. TOR_CHECK_CFLAGS(-fwrapv)
  557. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  558. if test "$bwin32" = "false"; then
  559. TOR_CHECK_CFLAGS(-fPIE)
  560. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  561. fi
  562. fi
  563. if test x$enable_expensive_hardening = xyes ; then
  564. TOR_CHECK_CFLAGS([-fsanitize=address])
  565. TOR_CHECK_CFLAGS([-fsanitize=undefined])
  566. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  567. fi
  568. if test x$enable_linker_hardening != xno; then
  569. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  570. fi
  571. # For backtrace support
  572. TOR_CHECK_LDFLAGS(-rdynamic)
  573. dnl ------------------------------------------------------
  574. dnl Now see if we have a -fomit-frame-pointer compiler option.
  575. saved_CFLAGS="$CFLAGS"
  576. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  577. F_OMIT_FRAME_POINTER=''
  578. if test "$saved_CFLAGS" != "$CFLAGS"; then
  579. if test x$enable_expensive_hardening != xyes ; then
  580. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  581. fi
  582. fi
  583. CFLAGS="$saved_CFLAGS"
  584. AC_SUBST(F_OMIT_FRAME_POINTER)
  585. dnl ------------------------------------------------------
  586. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  587. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  588. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  589. dnl code will work.
  590. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  591. dnl ------------------------------------------------------
  592. dnl Where do you live, libnatpmp? And how do we call you?
  593. dnl There are no packages for Debian or Redhat as of this patch
  594. if test "$natpmp" = "true"; then
  595. AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
  596. TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  597. [#include <natpmp.h>],
  598. [#ifdef _WIN32
  599. #define STATICLIB
  600. #endif
  601. #include <natpmp.h>],
  602. [ int r;
  603. natpmp_t natpmp;
  604. natpmpresp_t response;
  605. r = initnatpmp(&natpmp, 0, 0);],
  606. [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
  607. exit(0);],
  608. [--with-libnatpmp-dir],
  609. [/usr/lib/])
  610. fi
  611. dnl ------------------------------------------------------
  612. dnl Where do you live, libminiupnpc? And how do we call you?
  613. dnl There are no packages for Debian or Redhat as of this patch
  614. if test "$upnp" = "true"; then
  615. AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
  616. dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
  617. dnl to see if we have miniupnpc-1.5 or -1.6
  618. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
  619. [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])
  620. if test "$miniupnpc15" = "true" ; then
  621. AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
  622. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  623. [#include <miniupnpc/miniwget.h>
  624. #include <miniupnpc/miniupnpc.h>
  625. #include <miniupnpc/upnpcommands.h>],
  626. [void upnpDiscover(int delay, const char * multicastif,
  627. const char * minissdpdsock, int sameport);],
  628. [upnpDiscover(1, 0, 0, 0); exit(0);],
  629. [--with-libminiupnpc-dir],
  630. [/usr/lib/])
  631. else
  632. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  633. [#include <miniupnpc/miniwget.h>
  634. #include <miniupnpc/miniupnpc.h>
  635. #include <miniupnpc/upnpcommands.h>],
  636. [void upnpDiscover(int delay, const char * multicastif,
  637. const char * minissdpdsock, int sameport, int ipv6, int * error);],
  638. [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
  639. [--with-libminiupnpc-dir],
  640. [/usr/lib/])
  641. fi
  642. fi
  643. dnl ============================================================
  644. dnl Check for libseccomp
  645. if test "x$enable_seccomp" != "xno"; then
  646. AC_CHECK_HEADERS([seccomp.h])
  647. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  648. fi
  649. dnl ============================================================
  650. dnl Check for libscrypt
  651. if test "x$enable_libscrypt" != "xno"; then
  652. AC_CHECK_HEADERS([libscrypt.h])
  653. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  654. fi
  655. dnl ============================================================
  656. dnl We need an implementation of curve25519.
  657. dnl set these defaults.
  658. have_a_curve25519=no
  659. build_curve25519_donna=no
  660. build_curve25519_donna_c64=no
  661. use_curve25519_donna=no
  662. use_curve25519_nacl=no
  663. CURVE25519_LIBS=
  664. if test x$enable_curve25519 != xno; then
  665. dnl The best choice is using curve25519-donna-c64, but that requires
  666. dnl that we
  667. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  668. tor_cv_can_use_curve25519_donna_c64,
  669. [AC_RUN_IFELSE(
  670. [AC_LANG_PROGRAM([dnl
  671. #include <stdint.h>
  672. typedef unsigned uint128_t __attribute__((mode(TI)));
  673. int func(uint64_t a, uint64_t b) {
  674. uint128_t c = ((uint128_t)a) * b;
  675. int ok = ((uint64_t)(c>>96)) == 522859 &&
  676. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  677. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  678. (((uint64_t)(c))&0xffffffffL) == 0;
  679. return ok;
  680. }
  681. ], [dnl
  682. int ok = func( ((uint64_t)2000000000) * 1000000000,
  683. ((uint64_t)1234567890) << 24);
  684. return !ok;
  685. ])],
  686. [tor_cv_can_use_curve25519_donna_c64=yes],
  687. [tor_cv_can_use_curve25519_donna_c64=no],
  688. [AC_LINK_IFELSE(
  689. [AC_LANG_PROGRAM([dnl
  690. #include <stdint.h>
  691. typedef unsigned uint128_t __attribute__((mode(TI)));
  692. int func(uint64_t a, uint64_t b) {
  693. uint128_t c = ((uint128_t)a) * b;
  694. int ok = ((uint64_t)(c>>96)) == 522859 &&
  695. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  696. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  697. (((uint64_t)(c))&0xffffffffL) == 0;
  698. return ok;
  699. }
  700. ], [dnl
  701. int ok = func( ((uint64_t)2000000000) * 1000000000,
  702. ((uint64_t)1234567890) << 24);
  703. return !ok;
  704. ])],
  705. [tor_cv_can_use_curve25519_donna_c64=cross],
  706. [tor_cv_can_use_curve25519_donna_c64=no])])])
  707. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  708. nacl/crypto_scalarmult_curve25519.h])
  709. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  710. tor_cv_can_use_curve25519_nacl,
  711. [tor_saved_LIBS="$LIBS"
  712. LIBS="$LIBS -lnacl"
  713. AC_LINK_IFELSE(
  714. [AC_LANG_PROGRAM([dnl
  715. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  716. #include <crypto_scalarmult_curve25519.h>
  717. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  718. #include <nacl/crypto_scalarmult_curve25519.h>
  719. #endif
  720. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  721. #error Hey, this is the reference implementation! That's not fast.
  722. #endif
  723. ], [
  724. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  725. ])], [tor_cv_can_use_curve25519_nacl=yes],
  726. [tor_cv_can_use_curve25519_nacl=no])
  727. LIBS="$tor_saved_LIBS" ])
  728. dnl Okay, now we need to figure out which one to actually use. Fall back
  729. dnl to curve25519-donna.c
  730. if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
  731. build_curve25519_donna_c64=yes
  732. use_curve25519_donna=yes
  733. elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
  734. use_curve25519_nacl=yes
  735. CURVE25519_LIBS=-lnacl
  736. else
  737. build_curve25519_donna=yes
  738. use_curve25519_donna=yes
  739. fi
  740. have_a_curve25519=yes
  741. fi
  742. if test x$have_a_curve25519 = xyes; then
  743. AC_DEFINE(CURVE25519_ENABLED, 1,
  744. [Defined if we have a curve25519 implementation])
  745. fi
  746. if test x$use_curve25519_donna = xyes; then
  747. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  748. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  749. fi
  750. if test x$use_curve25519_nacl = xyes; then
  751. AC_DEFINE(USE_CURVE25519_NACL, 1,
  752. [Defined if we should use a curve25519 from nacl])
  753. fi
  754. AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
  755. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
  756. AM_CONDITIONAL(CURVE25519_ENABLED, test x$have_a_curve25519 = xyes)
  757. AC_SUBST(CURVE25519_LIBS)
  758. dnl Make sure to enable support for large off_t if available.
  759. AC_SYS_LARGEFILE
  760. AC_CHECK_HEADERS(
  761. assert.h \
  762. errno.h \
  763. fcntl.h \
  764. signal.h \
  765. string.h \
  766. sys/fcntl.h \
  767. sys/stat.h \
  768. sys/time.h \
  769. sys/types.h \
  770. time.h \
  771. unistd.h
  772. , , 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.))
  773. dnl These headers are not essential
  774. AC_CHECK_HEADERS(
  775. arpa/inet.h \
  776. crt_externs.h \
  777. execinfo.h \
  778. grp.h \
  779. ifaddrs.h \
  780. inttypes.h \
  781. limits.h \
  782. linux/types.h \
  783. machine/limits.h \
  784. malloc.h \
  785. malloc/malloc.h \
  786. malloc_np.h \
  787. netdb.h \
  788. netinet/in.h \
  789. netinet/in6.h \
  790. pwd.h \
  791. stdint.h \
  792. sys/file.h \
  793. sys/ioctl.h \
  794. sys/limits.h \
  795. sys/mman.h \
  796. sys/param.h \
  797. sys/prctl.h \
  798. sys/resource.h \
  799. sys/select.h \
  800. sys/socket.h \
  801. sys/sysctl.h \
  802. sys/syslimits.h \
  803. sys/time.h \
  804. sys/types.h \
  805. sys/un.h \
  806. sys/utime.h \
  807. sys/wait.h \
  808. syslog.h \
  809. utime.h
  810. )
  811. AC_CHECK_HEADERS(sys/param.h)
  812. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  813. [#ifdef HAVE_SYS_TYPES_H
  814. #include <sys/types.h>
  815. #endif
  816. #ifdef HAVE_SYS_SOCKET_H
  817. #include <sys/socket.h>
  818. #endif])
  819. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  820. [#ifdef HAVE_SYS_TYPES_H
  821. #include <sys/types.h>
  822. #endif
  823. #ifdef HAVE_SYS_SOCKET_H
  824. #include <sys/socket.h>
  825. #endif
  826. #ifdef HAVE_NET_IF_H
  827. #include <net/if.h>
  828. #endif])
  829. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  830. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  831. [#ifdef HAVE_SYS_TYPES_H
  832. #include <sys/types.h>
  833. #endif
  834. #ifdef HAVE_SYS_SOCKET_H
  835. #include <sys/socket.h>
  836. #endif
  837. #ifdef HAVE_LIMITS_H
  838. #include <limits.h>
  839. #endif
  840. #ifdef HAVE_LINUX_TYPES_H
  841. #include <linux/types.h>
  842. #endif
  843. #ifdef HAVE_NETINET_IN6_H
  844. #include <netinet/in6.h>
  845. #endif
  846. #ifdef HAVE_NETINET_IN_H
  847. #include <netinet/in.h>
  848. #endif])
  849. if test x$transparent = xtrue ; then
  850. transparent_ok=0
  851. if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
  852. transparent_ok=1
  853. fi
  854. if test x$linux_netfilter_ipv4 = x1 ; then
  855. transparent_ok=1
  856. fi
  857. if test x$transparent_ok = x1 ; then
  858. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  859. case $host in
  860. *-*-openbsd* | *-*-bitrig*)
  861. AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
  862. esac
  863. else
  864. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  865. fi
  866. fi
  867. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  868. [#ifdef HAVE_SYS_TYPES_H
  869. #include <sys/types.h>
  870. #endif
  871. #ifdef HAVE_SYS_TIME_H
  872. #include <sys/time.h>
  873. #endif])
  874. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  875. dnl Watch out.
  876. AC_CHECK_SIZEOF(int8_t)
  877. AC_CHECK_SIZEOF(int16_t)
  878. AC_CHECK_SIZEOF(int32_t)
  879. AC_CHECK_SIZEOF(int64_t)
  880. AC_CHECK_SIZEOF(uint8_t)
  881. AC_CHECK_SIZEOF(uint16_t)
  882. AC_CHECK_SIZEOF(uint32_t)
  883. AC_CHECK_SIZEOF(uint64_t)
  884. AC_CHECK_SIZEOF(intptr_t)
  885. AC_CHECK_SIZEOF(uintptr_t)
  886. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  887. AC_CHECK_SIZEOF(char)
  888. AC_CHECK_SIZEOF(short)
  889. AC_CHECK_SIZEOF(int)
  890. AC_CHECK_SIZEOF(long)
  891. AC_CHECK_SIZEOF(long long)
  892. AC_CHECK_SIZEOF(__int64)
  893. AC_CHECK_SIZEOF(void *)
  894. AC_CHECK_SIZEOF(time_t)
  895. AC_CHECK_SIZEOF(size_t)
  896. AC_CHECK_SIZEOF(pid_t)
  897. AC_CHECK_TYPES([uint, u_char, ssize_t])
  898. AC_PC_FROM_UCONTEXT([/bin/true])
  899. dnl used to include sockaddr_storage, but everybody has that.
  900. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  901. [#ifdef HAVE_SYS_TYPES_H
  902. #include <sys/types.h>
  903. #endif
  904. #ifdef HAVE_NETINET_IN_H
  905. #include <netinet/in.h>
  906. #endif
  907. #ifdef HAVE_NETINET_IN6_H
  908. #include <netinet/in6.h>
  909. #endif
  910. #ifdef HAVE_SYS_SOCKET_H
  911. #include <sys/socket.h>
  912. #endif
  913. #ifdef _WIN32
  914. #define _WIN32_WINNT 0x0501
  915. #define WIN32_LEAN_AND_MEAN
  916. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  917. #include <winsock.h>
  918. #else
  919. #include <winsock2.h>
  920. #include <ws2tcpip.h>
  921. #endif
  922. #endif
  923. ])
  924. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  925. [#ifdef HAVE_SYS_TYPES_H
  926. #include <sys/types.h>
  927. #endif
  928. #ifdef HAVE_NETINET_IN_H
  929. #include <netinet/in.h>
  930. #endif
  931. #ifdef HAVE_NETINET_IN6_H
  932. #include <netinet/in6.h>
  933. #endif
  934. #ifdef HAVE_SYS_SOCKET_H
  935. #include <sys/socket.h>
  936. #endif
  937. #ifdef _WIN32
  938. #define _WIN32_WINNT 0x0501
  939. #define WIN32_LEAN_AND_MEAN
  940. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  941. #include <winsock.h>
  942. #else
  943. #include <winsock2.h>
  944. #include <ws2tcpip.h>
  945. #endif
  946. #endif
  947. ])
  948. AC_CHECK_TYPES([rlim_t], , ,
  949. [#ifdef HAVE_SYS_TYPES_H
  950. #include <sys/types.h>
  951. #endif
  952. #ifdef HAVE_SYS_TIME_H
  953. #include <sys/time.h>
  954. #endif
  955. #ifdef HAVE_SYS_RESOURCE_H
  956. #include <sys/resource.h>
  957. #endif
  958. ])
  959. AX_CHECK_SIGN([time_t],
  960. [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
  961. [ : ], [
  962. #ifdef HAVE_SYS_TYPES_H
  963. #include <sys/types.h>
  964. #endif
  965. #ifdef HAVE_SYS_TIME_H
  966. #include <sys/time.h>
  967. #endif
  968. #ifdef HAVE_TIME_H
  969. #include <time.h>
  970. #endif
  971. ])
  972. if test "$ax_cv_decl_time_t_signed" = no; then
  973. AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
  974. fi
  975. AX_CHECK_SIGN([size_t],
  976. [ tor_cv_size_t_signed=yes ],
  977. [ tor_cv_size_t_signed=no ], [
  978. #ifdef HAVE_SYS_TYPES_H
  979. #include <sys/types.h>
  980. #endif
  981. ])
  982. if test "$ax_cv_decl_size_t_signed" = yes; then
  983. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  984. fi
  985. AX_CHECK_SIGN([enum always],
  986. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  987. [ : ], [
  988. enum always { AAA, BBB, CCC };
  989. ])
  990. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  991. #ifdef HAVE_SYS_SOCKET_H
  992. #include <sys/socket.h>
  993. #endif
  994. ])
  995. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  996. AC_CHECK_SIZEOF(cell_t)
  997. # Now make sure that NULL can be represented as zero bytes.
  998. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  999. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1000. [[#include <stdlib.h>
  1001. #include <string.h>
  1002. #include <stdio.h>
  1003. #ifdef HAVE_STDDEF_H
  1004. #include <stddef.h>
  1005. #endif
  1006. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1007. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1008. [tor_cv_null_is_zero=yes],
  1009. [tor_cv_null_is_zero=no],
  1010. [tor_cv_null_is_zero=cross])])
  1011. if test "$tor_cv_null_is_zero" = cross ; then
  1012. # Cross-compiling; let's hope that the target isn't raving mad.
  1013. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1014. fi
  1015. if test "$tor_cv_null_is_zero" != no; then
  1016. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1017. [Define to 1 iff memset(0) sets pointers to NULL])
  1018. fi
  1019. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1020. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1021. [[#include <stdlib.h>
  1022. #include <string.h>
  1023. #include <stdio.h>
  1024. #ifdef HAVE_STDDEF_H
  1025. #include <stddef.h>
  1026. #endif
  1027. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1028. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1029. [tor_cv_dbl0_is_zero=yes],
  1030. [tor_cv_dbl0_is_zero=no],
  1031. [tor_cv_dbl0_is_zero=cross])])
  1032. if test "$tor_cv_dbl0_is_zero" = cross ; then
  1033. # Cross-compiling; let's hope that the target isn't raving mad.
  1034. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1035. fi
  1036. if test "$tor_cv_dbl0_is_zero" != no; then
  1037. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1038. [Define to 1 iff memset(0) sets doubles to 0.0])
  1039. fi
  1040. # And what happens when we malloc zero?
  1041. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1042. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1043. [[#include <stdlib.h>
  1044. #include <string.h>
  1045. #include <stdio.h>
  1046. #ifdef HAVE_STDDEF_H
  1047. #include <stddef.h>
  1048. #endif
  1049. int main () { return malloc(0)?0:1; }]])],
  1050. [tor_cv_malloc_zero_works=yes],
  1051. [tor_cv_malloc_zero_works=no],
  1052. [tor_cv_malloc_zero_works=cross])])
  1053. if test "$tor_cv_malloc_zero_works" = cross; then
  1054. # Cross-compiling; let's hope that the target isn't raving mad.
  1055. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1056. fi
  1057. if test "$tor_cv_malloc_zero_works" = yes; then
  1058. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1059. [Define to 1 iff malloc(0) returns a pointer])
  1060. fi
  1061. # whether we seem to be in a 2s-complement world.
  1062. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1063. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1064. [[int main () { int problem = ((-99) != (~99)+1);
  1065. return problem ? 1 : 0; }]])],
  1066. [tor_cv_twos_complement=yes],
  1067. [tor_cv_twos_complement=no],
  1068. [tor_cv_twos_complement=cross])])
  1069. if test "$tor_cv_twos_complement" = cross ; then
  1070. # Cross-compiling; let's hope that the target isn't raving mad.
  1071. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1072. fi
  1073. if test "$tor_cv_twos_complement" != no ; then
  1074. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1075. [Define to 1 iff we represent negative integers with two's complement])
  1076. fi
  1077. # What does shifting a negative value do?
  1078. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1079. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1080. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1081. [tor_cv_sign_extend=yes],
  1082. [tor_cv_sign_extend=no],
  1083. [tor_cv_sign_extend=cross])])
  1084. if test "$tor_cv_sign_extend" = cross ; then
  1085. # Cross-compiling; let's hope that the target isn't raving mad.
  1086. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1087. fi
  1088. if test "$tor_cv_sign_extend" != no ; then
  1089. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1090. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1091. fi
  1092. # Whether we should use the dmalloc memory allocation debugging library.
  1093. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1094. AC_ARG_WITH(dmalloc,
  1095. [ --with-dmalloc Use debug memory allocation library. ],
  1096. [if [[ "$withval" = "yes" ]]; then
  1097. dmalloc=1
  1098. AC_MSG_RESULT(yes)
  1099. else
  1100. dmalloc=1
  1101. AC_MSG_RESULT(no)
  1102. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1103. )
  1104. if [[ $dmalloc -eq 1 ]]; then
  1105. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1106. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1107. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1108. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1109. fi
  1110. AC_ARG_WITH(tcmalloc,
  1111. [ --with-tcmalloc Use tcmalloc memory allocation library. ],
  1112. [ tcmalloc=yes ], [ tcmalloc=no ])
  1113. if test x$tcmalloc = xyes ; then
  1114. LDFLAGS="-ltcmalloc $LDFLAGS"
  1115. fi
  1116. using_custom_malloc=no
  1117. if test x$enable_openbsd_malloc = xyes ; then
  1118. using_custom_malloc=yes
  1119. fi
  1120. if test x$tcmalloc = xyes ; then
  1121. using_custom_malloc=yes
  1122. fi
  1123. if test $using_custom_malloc = no ; then
  1124. AC_CHECK_FUNCS(mallinfo)
  1125. fi
  1126. # By default, we're going to assume we don't have mlockall()
  1127. # bionic and other platforms have various broken mlockall subsystems.
  1128. # Some systems don't have a working mlockall, some aren't linkable,
  1129. # and some have it but don't declare it.
  1130. AC_CHECK_FUNCS(mlockall)
  1131. AC_CHECK_DECLS([mlockall], , , [
  1132. #ifdef HAVE_SYS_MMAN_H
  1133. #include <sys/mman.h>
  1134. #endif])
  1135. # Allow user to specify an alternate syslog facility
  1136. AC_ARG_WITH(syslog-facility,
  1137. [ --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
  1138. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1139. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1140. AC_SUBST(LOGFACILITY)
  1141. # Check if we have getresuid and getresgid
  1142. AC_CHECK_FUNCS(getresuid getresgid)
  1143. # Check for gethostbyname_r in all its glorious incompatible versions.
  1144. # (This logic is based on that in Python's configure.in)
  1145. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1146. [Define this if you have any gethostbyname_r()])
  1147. AC_CHECK_FUNC(gethostbyname_r, [
  1148. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1149. OLD_CFLAGS=$CFLAGS
  1150. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1151. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
  1152. #include <netdb.h>
  1153. ], [[
  1154. char *cp1, *cp2;
  1155. struct hostent *h1, *h2;
  1156. int i1, i2;
  1157. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1158. ]])],[
  1159. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1160. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1161. [Define this if gethostbyname_r takes 6 arguments])
  1162. AC_MSG_RESULT(6)
  1163. ], [
  1164. AC_TRY_COMPILE([
  1165. #include <netdb.h>
  1166. ], [
  1167. char *cp1, *cp2;
  1168. struct hostent *h1;
  1169. int i1, i2;
  1170. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1171. ], [
  1172. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1173. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1174. [Define this if gethostbyname_r takes 5 arguments])
  1175. AC_MSG_RESULT(5)
  1176. ], [
  1177. AC_TRY_COMPILE([
  1178. #include <netdb.h>
  1179. ], [
  1180. char *cp1;
  1181. struct hostent *h1;
  1182. struct hostent_data hd;
  1183. (void) gethostbyname_r(cp1,h1,&hd);
  1184. ], [
  1185. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1186. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1187. [Define this if gethostbyname_r takes 3 arguments])
  1188. AC_MSG_RESULT(3)
  1189. ], [
  1190. AC_MSG_RESULT(0)
  1191. ])
  1192. ])
  1193. ])
  1194. CFLAGS=$OLD_CFLAGS
  1195. ])
  1196. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1197. tor_cv_have_func_macro,
  1198. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1199. #include <stdio.h>
  1200. int main(int c, char **v) { puts(__func__); }])],
  1201. tor_cv_have_func_macro=yes,
  1202. tor_cv_have_func_macro=no))
  1203. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1204. tor_cv_have_FUNC_macro,
  1205. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1206. #include <stdio.h>
  1207. int main(int c, char **v) { puts(__FUNC__); }])],
  1208. tor_cv_have_FUNC_macro=yes,
  1209. tor_cv_have_FUNC_macro=no))
  1210. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1211. tor_cv_have_FUNCTION_macro,
  1212. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1213. #include <stdio.h>
  1214. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1215. tor_cv_have_FUNCTION_macro=yes,
  1216. tor_cv_have_FUNCTION_macro=no))
  1217. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1218. tor_cv_have_environ_declared,
  1219. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1220. /* We define _GNU_SOURCE here because it is also defined in compat.c.
  1221. * Without it environ doesn't get declared. */
  1222. #define _GNU_SOURCE
  1223. #ifdef HAVE_UNISTD_H
  1224. #include <unistd.h>
  1225. #endif
  1226. #include <stdlib.h>
  1227. int main(int c, char **v) { char **t = environ; }])],
  1228. tor_cv_have_environ_declared=yes,
  1229. tor_cv_have_environ_declared=no))
  1230. if test "$tor_cv_have_func_macro" = 'yes'; then
  1231. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1232. fi
  1233. if test "$tor_cv_have_FUNC_macro" = 'yes'; then
  1234. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1235. fi
  1236. if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
  1237. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1238. [Defined if the compiler supports __FUNCTION__])
  1239. fi
  1240. if test "$tor_cv_have_environ_declared" = 'yes'; then
  1241. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1242. [Defined if we have extern char **environ already declared])
  1243. fi
  1244. # $prefix stores the value of the --prefix command line option, or
  1245. # NONE if the option wasn't set. In the case that it wasn't set, make
  1246. # it be the default, so that we can use it to expand directories now.
  1247. if test "x$prefix" = "xNONE"; then
  1248. prefix=$ac_default_prefix
  1249. fi
  1250. # and similarly for $exec_prefix
  1251. if test "x$exec_prefix" = "xNONE"; then
  1252. exec_prefix=$prefix
  1253. fi
  1254. if test "x$BUILDDIR" = "x"; then
  1255. BUILDDIR=`pwd`
  1256. fi
  1257. AC_SUBST(BUILDDIR)
  1258. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1259. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1260. if test "x$CONFDIR" = "x"; then
  1261. CONFDIR=`eval echo $sysconfdir/tor`
  1262. fi
  1263. AC_SUBST(CONFDIR)
  1264. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1265. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1266. BINDIR=`eval echo $bindir`
  1267. AC_SUBST(BINDIR)
  1268. LOCALSTATEDIR=`eval echo $localstatedir`
  1269. AC_SUBST(LOCALSTATEDIR)
  1270. if test "$bwin32" = true; then
  1271. # Test if the linker supports the --nxcompat and --dynamicbase options
  1272. # for Windows
  1273. save_LDFLAGS="$LDFLAGS"
  1274. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1275. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1276. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1277. [AC_MSG_RESULT([yes])]
  1278. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1279. [AC_MSG_RESULT([no])]
  1280. )
  1281. LDFLAGS="$save_LDFLAGS"
  1282. fi
  1283. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1284. # than autoconf's macros like.
  1285. if test "$GCC" = yes; then
  1286. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1287. # accident waiting to happen.
  1288. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1289. else
  1290. # Autoconf sets -g -O2 by default. Override optimization level
  1291. # for non-gcc compilers
  1292. CFLAGS="$CFLAGS -O"
  1293. enable_gcc_warnings=no
  1294. enable_gcc_warnings_advisory=no
  1295. fi
  1296. # OS X Lion started deprecating the system openssl. Let's just disable
  1297. # all deprecation warnings on OS X. Also, to potentially make the binary
  1298. # a little smaller, let's enable dead_strip.
  1299. case "$host_os" in
  1300. darwin*)
  1301. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1302. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1303. esac
  1304. # Add some more warnings which we use in development but not in the
  1305. # released versions. (Some relevant gcc versions can't handle these.)
  1306. if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
  1307. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1308. #if !defined(__GNUC__) || (__GNUC__ < 4)
  1309. #error
  1310. #endif])], have_gcc4=yes, have_gcc4=no)
  1311. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1312. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
  1313. #error
  1314. #endif])], have_gcc42=yes, have_gcc42=no)
  1315. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1316. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
  1317. #error
  1318. #endif])], have_gcc43=yes, have_gcc43=no)
  1319. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1320. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
  1321. #error
  1322. #endif])], have_gcc46=yes, have_gcc46=no)
  1323. save_CFLAGS="$CFLAGS"
  1324. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1325. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
  1326. have_shorten64_flag=no)
  1327. CFLAGS="$save_CFLAGS"
  1328. case $host in
  1329. *-*-openbsd* | *-*-bitrig*)
  1330. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1331. # That's fine, except that the headers don't pass -Wredundant-decls.
  1332. # Therefore, let's disable -Wsystem-headers when we're building
  1333. # with maximal warnings on OpenBSD.
  1334. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1335. esac
  1336. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1337. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1338. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1339. CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
  1340. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1341. if test x$enable_gcc_warnings = xyes; then
  1342. CFLAGS="$CFLAGS -Werror"
  1343. fi
  1344. # Disabled, so we can use mallinfo(): -Waggregate-return
  1345. if test x$have_gcc4 = xyes ; then
  1346. # These warnings break gcc 3.3.5 and work on gcc 4.0.2
  1347. CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wold-style-definition"
  1348. fi
  1349. if test x$have_gcc42 = xyes ; then
  1350. # These warnings break gcc 4.0.2 and work on gcc 4.2
  1351. # XXXX020 See if any of these work with earlier versions.
  1352. CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
  1353. # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
  1354. fi
  1355. if test x$have_gcc42 = xyes && test x$have_clang = xno; then
  1356. # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
  1357. CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
  1358. fi
  1359. if test x$have_gcc43 = xyes ; then
  1360. # These warnings break gcc 4.2 and work on gcc 4.3
  1361. # XXXX020 See if any of these work with earlier versions.
  1362. CFLAGS="$CFLAGS -Wextra -Warray-bounds"
  1363. fi
  1364. if test x$have_gcc46 = xyes ; then
  1365. # This warning was added in gcc 4.3, but it appears to generate
  1366. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1367. CFLAGS="$CFLAGS -Wlogical-op"
  1368. fi
  1369. if test x$have_shorten64_flag = xyes ; then
  1370. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1371. fi
  1372. ##This will break the world on some 64-bit architectures
  1373. # CFLAGS="$CFLAGS -Winline"
  1374. fi
  1375. if test "$enable_coverage" = yes && test "$have_clang" = "no"; then
  1376. case "$host_os" in
  1377. darwin*)
  1378. 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.])
  1379. esac
  1380. fi
  1381. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  1382. AC_CONFIG_FILES([
  1383. Doxyfile
  1384. Makefile
  1385. contrib/dist/suse/tor.sh
  1386. contrib/operator-tools/tor.logrotate
  1387. contrib/dist/tor.sh
  1388. contrib/dist/torctl
  1389. contrib/dist/tor.service
  1390. src/config/torrc.sample
  1391. src/config/torrc.minimal
  1392. ])
  1393. if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then
  1394. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  1395. for file in $regular_mans ; do
  1396. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  1397. echo "==================================";
  1398. echo;
  1399. echo "Building Tor has failed since manpages cannot be built.";
  1400. echo;
  1401. echo "You need asciidoc installed to be able to build the manpages.";
  1402. echo "To build without manpages, use the --disable-asciidoc argument";
  1403. echo "when calling configure.";
  1404. echo;
  1405. echo "==================================";
  1406. exit 1;
  1407. fi
  1408. done
  1409. fi
  1410. AC_OUTPUT
  1411. if test -x /usr/bin/perl && test -x ./scripts/maint/updateVersions.pl ; then
  1412. ./scripts/maint/updateVersions.pl
  1413. fi