configure.ac 45 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],[0.2.5.0-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(--disable-buf-freelists, disable freelists for buffer RAM))
  23. AC_ARG_ENABLE(openbsd-malloc,
  24. AS_HELP_STRING(--enable-openbsd-malloc, Use malloc code from openbsd. Linux only))
  25. AC_ARG_ENABLE(instrument-downloads,
  26. AS_HELP_STRING(--enable-instrument-downloads, Instrument downloads of directory resources etc.))
  27. AC_ARG_ENABLE(static-openssl,
  28. AS_HELP_STRING(--enable-static-openssl, Link against a static openssl library. Requires --with-openssl-dir))
  29. AC_ARG_ENABLE(static-libevent,
  30. AS_HELP_STRING(--enable-static-libevent, Link against a static libevent library. Requires --with-libevent-dir))
  31. AC_ARG_ENABLE(static-zlib,
  32. AS_HELP_STRING(--enable-static-zlib, Link against a static zlib library. Requires --with-zlib-dir))
  33. AC_ARG_ENABLE(static-tor,
  34. AS_HELP_STRING(--enable-static-tor, Create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir))
  35. AC_ARG_ENABLE(curve25519,
  36. AS_HELP_STRING(--disable-curve25519, Build Tor with no curve25519 elliptic-curve crypto support))
  37. if test "$enable_static_tor" = "yes"; then
  38. enable_static_libevent="yes";
  39. enable_static_openssl="yes";
  40. enable_static_zlib="yes";
  41. CFLAGS="$CFLAGS -static"
  42. fi
  43. if test x$enable_buf_freelists != xno; then
  44. AC_DEFINE(ENABLE_BUF_FREELISTS, 1,
  45. [Defined if we try to use freelists for buffer RAM chunks])
  46. fi
  47. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test x$enable_openbsd_malloc = xyes)
  48. if test x$enable_instrument_downloads = xyes; then
  49. AC_DEFINE(INSTRUMENT_DOWNLOADS, 1,
  50. [Defined if we want to keep track of how much of each kind of resource we download.])
  51. fi
  52. AC_ARG_ENABLE(transparent,
  53. AS_HELP_STRING(--disable-transparent, disable transparent proxy support),
  54. [case "${enableval}" in
  55. yes) transparent=true ;;
  56. no) transparent=false ;;
  57. *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
  58. esac], [transparent=true])
  59. AC_ARG_ENABLE(asciidoc,
  60. AS_HELP_STRING(--disable-asciidoc, don't use asciidoc (disables building of manpages)),
  61. [case "${enableval}" in
  62. yes) asciidoc=true ;;
  63. no) asciidoc=false ;;
  64. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  65. esac], [asciidoc=true])
  66. # By default, we're not ready to ship a NAT-PMP aware Tor
  67. AC_ARG_ENABLE(nat-pmp,
  68. AS_HELP_STRING(--enable-nat-pmp, enable NAT-PMP support),
  69. [case "${enableval}" in
  70. yes) natpmp=true ;;
  71. no) natpmp=false ;;
  72. * ) AC_MSG_ERROR(bad value for --enable-nat-pmp) ;;
  73. esac], [natpmp=false])
  74. # By default, we're not ready to ship a UPnP aware Tor
  75. AC_ARG_ENABLE(upnp,
  76. AS_HELP_STRING(--enable-upnp, enable UPnP support),
  77. [case "${enableval}" in
  78. yes) upnp=true ;;
  79. no) upnp=false ;;
  80. * ) AC_MSG_ERROR(bad value for --enable-upnp) ;;
  81. esac], [upnp=false])
  82. AC_ARG_ENABLE(threads,
  83. AS_HELP_STRING(--disable-threads, disable multi-threading support))
  84. if test x$enable_threads = x; then
  85. case $host in
  86. *-*-solaris* )
  87. # Don't try multithreading on solaris -- cpuworkers seem to lock.
  88. AC_MSG_NOTICE([You are running Solaris; Sometimes threading makes
  89. cpu workers lock up here, so I will disable threads.])
  90. enable_threads="no";;
  91. *)
  92. enable_threads="yes";;
  93. esac
  94. fi
  95. if test "$enable_threads" = "yes"; then
  96. AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
  97. fi
  98. case $host in
  99. *-*-solaris* )
  100. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  101. ;;
  102. esac
  103. AC_ARG_ENABLE(gcc-warnings,
  104. AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
  105. AC_ARG_ENABLE(gcc-warnings-advisory,
  106. AS_HELP_STRING(--enable-gcc-warnings-advisory, [enable verbose warnings, excluding -Werror]))
  107. dnl Adam shostack suggests the following for Windows:
  108. dnl -D_FORTIFY_SOURCE=2 -fstack-protector-all
  109. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  110. dnl This requires that we use gcc and that we add -O2 to the CFLAGS.
  111. AC_ARG_ENABLE(gcc-hardening,
  112. AS_HELP_STRING(--disable-gcc-hardening, disable compiler security checks))
  113. dnl Linker hardening options
  114. dnl Currently these options are ELF specific - you can't use this with MacOSX
  115. AC_ARG_ENABLE(linker-hardening,
  116. AS_HELP_STRING(--disable-linker-hardening, disable linker security fixups))
  117. AC_ARG_ENABLE(local-appdata,
  118. AS_HELP_STRING(--enable-local-appdata, default to host local application data paths on Windows))
  119. if test "$enable_local_appdata" = "yes"; then
  120. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  121. [Defined if we default to host local appdata paths on Windows])
  122. fi
  123. # Tor2web mode flag
  124. AC_ARG_ENABLE(tor2web-mode,
  125. AS_HELP_STRING(--enable-tor2web-mode, support tor2web non-anonymous mode),
  126. [if test x$enableval = xyes; then
  127. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  128. fi])
  129. AC_ARG_ENABLE(bufferevents,
  130. AS_HELP_STRING(--enable-bufferevents, use Libevent's buffered IO.))
  131. dnl check for the correct "ar" when cross-compiling
  132. AN_MAKEVAR([AR], [AC_PROG_AR])
  133. AN_PROGRAM([ar], [AC_PROG_AR])
  134. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [ar])])
  135. AC_PROG_AR
  136. AC_PROG_CC
  137. AC_PROG_CPP
  138. AC_PROG_MAKE_SET
  139. AC_PROG_RANLIB
  140. dnl autoconf 2.59 appears not to support AC_PROG_SED
  141. AC_CHECK_PROG([SED],[sed],[sed],[/bin/false])
  142. dnl check for asciidoc and a2x
  143. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  144. AC_PATH_PROG([A2X], [a2x], none)
  145. AM_CONDITIONAL(USE_ASCIIDOC, test x$asciidoc = xtrue)
  146. AM_CONDITIONAL(USE_FW_HELPER, test x$natpmp = xtrue || test x$upnp = xtrue)
  147. AM_CONDITIONAL(NAT_PMP, test x$natpmp = xtrue)
  148. AM_CONDITIONAL(MINIUPNPC, test x$upnp = xtrue)
  149. AM_PROG_CC_C_O
  150. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  151. AC_C_FLEXIBLE_ARRAY_MEMBER
  152. ], [
  153. dnl Maybe we've got an old autoconf...
  154. AC_CACHE_CHECK([for flexible array members],
  155. tor_cv_c_flexarray,
  156. [AC_COMPILE_IFELSE(
  157. AC_LANG_PROGRAM([
  158. struct abc { int a; char b[]; };
  159. ], [
  160. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  161. def->b[0] = 33;
  162. ]),
  163. [tor_cv_c_flexarray=yes],
  164. [tor_cv_c_flexarray=no])])
  165. if test $tor_cv_flexarray = yes ; then
  166. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  167. else
  168. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  169. fi
  170. ])
  171. AC_PATH_PROG([SHA1SUM], [sha1sum], none)
  172. AC_PATH_PROG([OPENSSL], [openssl], none)
  173. TORUSER=_tor
  174. AC_ARG_WITH(tor-user,
  175. [ --with-tor-user=NAME Specify username for tor daemon ],
  176. [
  177. TORUSER=$withval
  178. ]
  179. )
  180. AC_SUBST(TORUSER)
  181. TORGROUP=_tor
  182. AC_ARG_WITH(tor-group,
  183. [ --with-tor-group=NAME Specify group name for tor daemon ],
  184. [
  185. TORGROUP=$withval
  186. ]
  187. )
  188. AC_SUBST(TORGROUP)
  189. dnl If _WIN32 is defined and non-zero, we are building for win32
  190. AC_MSG_CHECKING([for win32])
  191. AC_RUN_IFELSE([AC_LANG_SOURCE([
  192. int main(int c, char **v) {
  193. #ifdef _WIN32
  194. #if _WIN32
  195. return 0;
  196. #else
  197. return 1;
  198. #endif
  199. #else
  200. return 2;
  201. #endif
  202. }])],
  203. bwin32=true; AC_MSG_RESULT([yes]),
  204. bwin32=false; AC_MSG_RESULT([no]),
  205. bwin32=cross; AC_MSG_RESULT([cross])
  206. )
  207. if test "$bwin32" = cross; then
  208. AC_MSG_CHECKING([for win32 (cross)])
  209. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  210. #ifdef _WIN32
  211. int main(int c, char **v) {return 0;}
  212. #else
  213. #error
  214. int main(int c, char **v) {return x(y);}
  215. #endif
  216. ])],
  217. bwin32=true; AC_MSG_RESULT([yes]),
  218. bwin32=false; AC_MSG_RESULT([no]))
  219. fi
  220. AM_CONDITIONAL(BUILD_NT_SERVICES, test x$bwin32 = xtrue)
  221. dnl Enable C99 when compiling with MIPSpro
  222. AC_MSG_CHECKING([for MIPSpro compiler])
  223. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  224. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  225. #error
  226. return x(y);
  227. #endif
  228. ])],
  229. bmipspro=false; AC_MSG_RESULT(no),
  230. bmipspro=true; AC_MSG_RESULT(yes))
  231. if test "$bmipspro" = true; then
  232. CFLAGS="$CFLAGS -c99"
  233. fi
  234. AC_C_BIGENDIAN
  235. AC_SEARCH_LIBS(socket, [socket network])
  236. AC_SEARCH_LIBS(gethostbyname, [nsl])
  237. AC_SEARCH_LIBS(dlopen, [dl])
  238. AC_SEARCH_LIBS(inet_aton, [resolv])
  239. saved_LIBS="$LIBS"
  240. AC_SEARCH_LIBS([clock_gettime], [rt])
  241. if test "$LIBS" != "$saved_LIBS"; then
  242. # Looks like we need -lrt for clock_gettime().
  243. have_rt=yes
  244. fi
  245. if test "$enable_threads" = "yes"; then
  246. AC_SEARCH_LIBS(pthread_create, [pthread])
  247. AC_SEARCH_LIBS(pthread_detach, [pthread])
  248. fi
  249. dnl -------------------------------------------------------------------
  250. dnl Check for functions before libevent, since libevent-1.2 apparently
  251. dnl exports strlcpy without defining it in a header.
  252. AC_CHECK_FUNCS(
  253. _NSGetEnviron \
  254. accept4 \
  255. clock_gettime \
  256. flock \
  257. ftime \
  258. getaddrinfo \
  259. getifaddrs \
  260. getrlimit \
  261. gettimeofday \
  262. gmtime_r \
  263. inet_aton \
  264. ioctl \
  265. issetugid \
  266. llround \
  267. localtime_r \
  268. lround \
  269. memmem \
  270. prctl \
  271. rint \
  272. socketpair \
  273. strlcat \
  274. strlcpy \
  275. strptime \
  276. strtok_r \
  277. strtoull \
  278. sysconf \
  279. uname \
  280. vasprintf \
  281. _vscprintf
  282. )
  283. if test "$enable_threads" = "yes"; then
  284. AC_CHECK_HEADERS(pthread.h)
  285. AC_CHECK_FUNCS(pthread_create)
  286. fi
  287. dnl ------------------------------------------------------
  288. dnl Where do you live, libevent? And how do we call you?
  289. if test "$bwin32" = true; then
  290. TOR_LIB_WS32=-lws2_32
  291. TOR_LIB_IPHLPAPI=-liphlpapi
  292. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  293. # think it's actually necessary.
  294. TOR_LIB_GDI=-lgdi32
  295. else
  296. TOR_LIB_WS32=
  297. TOR_LIB_GDI=
  298. fi
  299. AC_SUBST(TOR_LIB_WS32)
  300. AC_SUBST(TOR_LIB_GDI)
  301. AC_SUBST(TOR_LIB_IPHLPAPI)
  302. dnl We need to do this before we try our disgusting hack below.
  303. AC_CHECK_HEADERS([sys/types.h])
  304. dnl This is a disgusting hack so we safely include older libevent headers.
  305. AC_CHECK_TYPE(u_int64_t, unsigned long long)
  306. AC_CHECK_TYPE(u_int32_t, unsigned long)
  307. AC_CHECK_TYPE(u_int16_t, unsigned short)
  308. AC_CHECK_TYPE(u_int8_t, unsigned char)
  309. tor_libevent_pkg_redhat="libevent"
  310. tor_libevent_pkg_debian="libevent-dev"
  311. tor_libevent_devpkg_redhat="libevent-devel"
  312. tor_libevent_devpkg_debian="libevent-dev"
  313. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  314. dnl linking for static builds.
  315. STATIC_LIBEVENT_FLAGS=""
  316. if test "$enable_static_libevent" = "yes"; then
  317. if test "$have_rt" = yes; then
  318. STATIC_LIBEVENT_FLAGS=" -lrt "
  319. fi
  320. fi
  321. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  322. #ifdef _WIN32
  323. #include <winsock2.h>
  324. #endif
  325. #include <stdlib.h>
  326. #include <sys/time.h>
  327. #include <sys/types.h>
  328. #include <event.h>], [
  329. #ifdef _WIN32
  330. #include <winsock2.h>
  331. #endif
  332. void exit(int); void *event_init(void);],
  333. [
  334. #ifdef _WIN32
  335. {WSADATA d; WSAStartup(0x101,&d); }
  336. #endif
  337. event_init(); exit(0);
  338. ], [--with-libevent-dir], [/opt/libevent])
  339. dnl Now check for particular libevent functions.
  340. save_LIBS="$LIBS"
  341. save_LDFLAGS="$LDFLAGS"
  342. save_CPPFLAGS="$CPPFLAGS"
  343. LIBS="-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $LIBS"
  344. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  345. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  346. AC_CHECK_FUNCS(event_get_version event_get_version_number event_get_method event_set_log_callback evdns_set_outgoing_bind_address event_base_loopexit)
  347. AC_CHECK_MEMBERS([struct event.min_heap_idx], , ,
  348. [#include <event.h>
  349. ])
  350. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  351. LIBS="$save_LIBS"
  352. LDFLAGS="$save_LDFLAGS"
  353. CPPFLAGS="$save_CPPFLAGS"
  354. AM_CONDITIONAL(USE_EXTERNAL_EVDNS, test x$ac_cv_header_event2_dns_h = xyes)
  355. if test "$enable_static_libevent" = "yes"; then
  356. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  357. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  358. else
  359. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  360. fi
  361. else
  362. TOR_LIBEVENT_LIBS="-levent"
  363. fi
  364. dnl This isn't the best test for Libevent 2.0.3-alpha. Once it's released,
  365. dnl we can do much better.
  366. if test "$enable_bufferevents" = "yes" ; then
  367. if test "$ac_cv_header_event2_bufferevent_ssl_h" != "yes" ; then
  368. AC_MSG_ERROR([You've asked for bufferevent support, but you're using a version of Libevent without SSL support. This won't work. We need Libevent 2.0.8-rc or later, and you don't seem to even have Libevent 2.0.3-alpha.])
  369. else
  370. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  371. # Check for the right version. First see if version detection works.
  372. AC_MSG_CHECKING([whether we can detect the Libevent version])
  373. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  374. #include <event2/event.h>
  375. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 10
  376. #error
  377. int x = y(zz);
  378. #else
  379. int x = 1;
  380. #endif
  381. ])], [event_version_number_works=yes; AC_MSG_RESULT([yes]) ],
  382. [event_version_number_works=no; AC_MSG_RESULT([no])])
  383. if test "$event_version_number_works" != 'yes'; then
  384. AC_MSG_WARN([Version detection on Libevent seems broken. Your Libevent installation is probably screwed up or very old.])
  385. else
  386. AC_MSG_CHECKING([whether Libevent is new enough for bufferevents])
  387. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  388. #include <event2/event.h>
  389. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000d00
  390. #error
  391. int x = y(zz);
  392. #else
  393. int x = 1;
  394. #endif
  395. ])], [ AC_MSG_RESULT([yes]) ],
  396. [ AC_MSG_RESULT([no])
  397. AC_MSG_ERROR([Libevent does not seem new enough to support bufferevents. We require 2.0.13-stable or later]) ] )
  398. fi
  399. fi
  400. fi
  401. LIBS="$save_LIBS"
  402. LDFLAGS="$save_LDFLAGS"
  403. CPPFLAGS="$save_CPPFLAGS"
  404. AM_CONDITIONAL(USE_BUFFEREVENTS, test "$enable_bufferevents" = "yes")
  405. if test "$enable_bufferevents" = "yes"; then
  406. AC_DEFINE(USE_BUFFEREVENTS, 1, [Defined if we're going to use Libevent's buffered IO API])
  407. if test "$enable_static_libevent" = "yes"; then
  408. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent_openssl.a $TOR_LIBEVENT_LIBS"
  409. else
  410. TOR_LIBEVENT_LIBS="-levent_openssl $TOR_LIBEVENT_LIBS"
  411. fi
  412. fi
  413. AC_SUBST(TOR_LIBEVENT_LIBS)
  414. dnl ------------------------------------------------------
  415. dnl Where do you live, libm?
  416. dnl On some platforms (Haiku/BeOS) the math library is
  417. dnl part of libroot. In which case don't link against lm
  418. TOR_LIB_MATH=""
  419. save_LIBS="$LIBS"
  420. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  421. if test "$ac_cv_search_pow" != "none required"; then
  422. TOR_LIB_MATH="$ac_cv_search_pow"
  423. fi
  424. LIBS="$save_LIBS"
  425. AC_SUBST(TOR_LIB_MATH)
  426. dnl ------------------------------------------------------
  427. dnl Where do you live, openssl? And how do we call you?
  428. tor_openssl_pkg_redhat="openssl"
  429. tor_openssl_pkg_debian="libssl"
  430. tor_openssl_devpkg_redhat="openssl-devel"
  431. tor_openssl_devpkg_debian="libssl-dev"
  432. ALT_openssl_WITHVAL=""
  433. AC_ARG_WITH(ssl-dir,
  434. [ --with-ssl-dir=PATH Obsolete alias for --with-openssl-dir ],
  435. [
  436. if test "x$withval" != xno && test "x$withval" != "x" ; then
  437. ALT_openssl_WITHVAL="$withval"
  438. fi
  439. ])
  440. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
  441. [#include <openssl/rand.h>],
  442. [void RAND_add(const void *buf, int num, double entropy);],
  443. [RAND_add((void*)0,0,0); exit(0);], [],
  444. [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /opt/openssl])
  445. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  446. if test "$enable_static_openssl" = "yes"; then
  447. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  448. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  449. else
  450. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  451. fi
  452. else
  453. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  454. fi
  455. AC_SUBST(TOR_OPENSSL_LIBS)
  456. dnl ------------------------------------------------------
  457. dnl Where do you live, zlib? And how do we call you?
  458. tor_zlib_pkg_redhat="zlib"
  459. tor_zlib_pkg_debian="zlib1g"
  460. tor_zlib_devpkg_redhat="zlib-devel"
  461. tor_zlib_devpkg_debian="zlib1g-dev"
  462. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  463. [#include <zlib.h>],
  464. [const char * zlibVersion(void);],
  465. [zlibVersion(); exit(0);], [--with-zlib-dir],
  466. [/opt/zlib])
  467. if test "$enable_static_zlib" = "yes"; then
  468. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  469. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  470. using --enable-static-zlib")
  471. else
  472. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  473. fi
  474. else
  475. TOR_ZLIB_LIBS="-lz"
  476. fi
  477. AC_SUBST(TOR_ZLIB_LIBS)
  478. dnl ---------------------------------------------------------------------
  479. dnl Now that we know about our major libraries, we can check for compiler
  480. dnl and linker hardening options. We need to do this with the libraries known,
  481. dnl since sometimes the linker will like an option but not be willing to
  482. dnl use it with a build of a library.
  483. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  484. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI"
  485. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  486. #if !defined(__clang__)
  487. #error
  488. #endif])], have_clang=yes, have_clang=no)
  489. if test x$enable_gcc_hardening != xno; then
  490. CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
  491. if test x$have_clang = xyes; then
  492. TOR_CHECK_CFLAGS(-Qunused-arguments)
  493. fi
  494. TOR_CHECK_CFLAGS(-fstack-protector-all)
  495. TOR_CHECK_CFLAGS(-Wstack-protector)
  496. TOR_CHECK_CFLAGS(-fwrapv)
  497. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  498. if test "$bwin32" = "false"; then
  499. TOR_CHECK_CFLAGS(-fPIE)
  500. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  501. fi
  502. fi
  503. if test x$enable_linker_hardening != xno; then
  504. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  505. fi
  506. dnl ------------------------------------------------------
  507. dnl Now see if we have a -fomit-frame-pointer compiler option.
  508. saved_CFLAGS="$CFLAGS"
  509. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  510. if test "$saved_CFLAGS" != "$CFLAGS"; then
  511. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  512. else
  513. F_OMIT_FRAME_POINTER=''
  514. fi
  515. CFLAGS="$saved_CFLAGS"
  516. AC_SUBST(F_OMIT_FRAME_POINTER)
  517. dnl ------------------------------------------------------
  518. dnl Where do you live, libnatpmp? And how do we call you?
  519. dnl There are no packages for Debian or Redhat as of this patch
  520. if test "$natpmp" = "true"; then
  521. AC_DEFINE(NAT_PMP, 1, [Define to 1 if we are building with nat-pmp.])
  522. TOR_SEARCH_LIBRARY(libnatpmp, $trylibnatpmpdir, [-lnatpmp $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  523. [#include <natpmp.h>],
  524. [#ifdef _WIN32
  525. #define STATICLIB
  526. #endif
  527. #include <natpmp.h>],
  528. [ int r;
  529. natpmp_t natpmp;
  530. natpmpresp_t response;
  531. r = initnatpmp(&natpmp, 0, 0);],
  532. [printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
  533. exit(0);],
  534. [--with-libnatpmp-dir],
  535. [/usr/lib/])
  536. fi
  537. dnl ------------------------------------------------------
  538. dnl Where do you live, libminiupnpc? And how do we call you?
  539. dnl There are no packages for Debian or Redhat as of this patch
  540. if test "$upnp" = "true"; then
  541. AC_DEFINE(MINIUPNPC, 1, [Define to 1 if we are building with UPnP.])
  542. dnl Before we call TOR_SEARCH_LIBRARY we'll do a quick compile test
  543. dnl to see if we have miniupnpc-1.5 or -1.6
  544. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <miniupnpc/miniupnpc.h>],
  545. [upnpDiscover(1, 0, 0, 0);exit(0);])],[miniupnpc15="true"],[miniupnpc15="false"])
  546. if test "$miniupnpc15" = "true" ; then
  547. AC_DEFINE([MINIUPNPC15],[1],[libminiupnpc version 1.5 found])
  548. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  549. [#include <miniupnpc/miniwget.h>
  550. #include <miniupnpc/miniupnpc.h>
  551. #include <miniupnpc/upnpcommands.h>],
  552. [void upnpDiscover(int delay, const char * multicastif,
  553. const char * minissdpdsock, int sameport);],
  554. [upnpDiscover(1, 0, 0, 0); exit(0);],
  555. [--with-libminiupnpc-dir],
  556. [/usr/lib/])
  557. else
  558. TOR_SEARCH_LIBRARY(libminiupnpc, $trylibminiupnpcdir, [-lminiupnpc $TOR_LIB_WS32 $TOR_LIB_IPHLPAPI],
  559. [#include <miniupnpc/miniwget.h>
  560. #include <miniupnpc/miniupnpc.h>
  561. #include <miniupnpc/upnpcommands.h>],
  562. [void upnpDiscover(int delay, const char * multicastif,
  563. const char * minissdpdsock, int sameport, int ipv6, int * error);],
  564. [upnpDiscover(1, 0, 0, 0, 0, 0); exit(0);],
  565. [--with-libminiupnpc-dir],
  566. [/usr/lib/])
  567. fi
  568. fi
  569. dnl ============================================================
  570. dnl We need an implementation of curve25519.
  571. dnl set these defaults.
  572. have_a_curve25519=no
  573. build_curve25519_donna=no
  574. build_curve25519_donna_c64=no
  575. use_curve25519_donna=no
  576. use_curve25519_nacl=no
  577. CURVE25519_LIBS=
  578. if test x$enable_curve25519 != xno; then
  579. dnl The best choice is using curve25519-donna-c64, but that requires
  580. dnl that we
  581. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  582. tor_cv_can_use_curve25519_donna_c64,
  583. [AC_RUN_IFELSE(
  584. [AC_LANG_PROGRAM([dnl
  585. #include <stdint.h>
  586. typedef unsigned uint128_t __attribute__((mode(TI)));
  587. int func(uint64_t a, uint64_t b) {
  588. uint128_t c = ((uint128_t)a) * b;
  589. int ok = ((uint64_t)(c>>96)) == 522859 &&
  590. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  591. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  592. (((uint64_t)(c))&0xffffffffL) == 0;
  593. return ok;
  594. }
  595. ], [dnl
  596. int ok = func( ((uint64_t)2000000000) * 1000000000,
  597. ((uint64_t)1234567890) << 24);
  598. return !ok;
  599. ])],
  600. [tor_cv_can_use_curve25519_donna_c64=yes],
  601. [tor_cv_can_use_curve25519_donna_c64=no],
  602. [AC_COMPILE_IFELSE(
  603. [AC_LANG_PROGRAM([dnl
  604. #include <stdint.h>
  605. typedef unsigned uint128_t __attribute__((mode(TI)));
  606. int func(uint64_t a, uint64_t b) {
  607. uint128_t c = ((uint128_t)a) * b;
  608. int ok = ((uint64_t)(c>>96)) == 522859 &&
  609. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  610. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  611. (((uint64_t)(c))&0xffffffffL) == 0;
  612. return ok;
  613. }
  614. ], [dnl
  615. int ok = func( ((uint64_t)2000000000) * 1000000000,
  616. ((uint64_t)1234567890) << 24);
  617. return !ok;
  618. ])],
  619. [tor_cv_can_use_curve25519_donna_c64=cross],
  620. [tor_cv_can_use_curve25519_donna_c64=no])])])
  621. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  622. nacl/crypto_scalarmult_curve25519.h])
  623. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  624. tor_cv_can_use_curve25519_nacl,
  625. [tor_saved_LIBS="$LIBS"
  626. LIBS="$LIBS -lnacl"
  627. AC_LINK_IFELSE(
  628. [AC_LANG_PROGRAM([dnl
  629. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  630. #include <crypto_scalarmult_curve25519.h>
  631. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  632. #include <nacl/crypto_scalarmult_curve25519.h>
  633. #endif
  634. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  635. #error Hey, this is the reference implementation! That's not fast.
  636. #endif
  637. ], [
  638. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  639. ])], [tor_cv_can_use_curve25519_nacl=yes],
  640. [tor_cv_can_use_curve25519_nacl=no])
  641. LIBS="$tor_saved_LIBS" ])
  642. dnl Okay, now we need to figure out which one to actually use. Fall back
  643. dnl to curve25519-donna.c
  644. if test x$tor_cv_can_use_curve25519_donna_c64 != xno; then
  645. build_curve25519_donna_c64=yes
  646. use_curve25519_donna=yes
  647. elif test x$tor_cv_can_use_curve25519_nacl = xyes; then
  648. use_curve25519_nacl=yes
  649. CURVE25519_LIBS=-lnacl
  650. else
  651. build_curve25519_donna=yes
  652. use_curve25519_donna=yes
  653. fi
  654. have_a_curve25519=yes
  655. fi
  656. if test x$have_a_curve25519 = xyes; then
  657. AC_DEFINE(CURVE25519_ENABLED, 1,
  658. [Defined if we have a curve25519 implementation])
  659. fi
  660. if test x$use_curve25519_donna = xyes; then
  661. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  662. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  663. fi
  664. if test x$use_curve25519_nacl = xyes; then
  665. AC_DEFINE(USE_CURVE25519_NACL, 1,
  666. [Defined if we should use a curve25519 from nacl])
  667. fi
  668. AM_CONDITIONAL(BUILD_CURVE25519_DONNA, test x$build_curve25519_donna = xyes)
  669. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64, test x$build_curve25519_donna_c64 = xyes)
  670. AM_CONDITIONAL(CURVE25519_ENABLED, test x$have_a_curve25519 = xyes)
  671. AC_SUBST(CURVE25519_LIBS)
  672. dnl Make sure to enable support for large off_t if available.
  673. AC_SYS_LARGEFILE
  674. AC_CHECK_HEADERS(
  675. assert.h \
  676. errno.h \
  677. fcntl.h \
  678. signal.h \
  679. string.h \
  680. sys/fcntl.h \
  681. sys/stat.h \
  682. sys/time.h \
  683. sys/types.h \
  684. time.h \
  685. unistd.h
  686. , , 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.))
  687. dnl These headers are not essential
  688. AC_CHECK_HEADERS(
  689. arpa/inet.h \
  690. crt_externs.h \
  691. grp.h \
  692. ifaddrs.h \
  693. inttypes.h \
  694. limits.h \
  695. linux/types.h \
  696. machine/limits.h \
  697. malloc.h \
  698. malloc/malloc.h \
  699. malloc_np.h \
  700. netdb.h \
  701. netinet/in.h \
  702. netinet/in6.h \
  703. pwd.h \
  704. stdint.h \
  705. sys/file.h \
  706. sys/ioctl.h \
  707. sys/limits.h \
  708. sys/mman.h \
  709. sys/param.h \
  710. sys/prctl.h \
  711. sys/resource.h \
  712. sys/socket.h \
  713. sys/syslimits.h \
  714. sys/time.h \
  715. sys/types.h \
  716. sys/un.h \
  717. sys/utime.h \
  718. sys/wait.h \
  719. syslog.h \
  720. utime.h
  721. )
  722. AC_CHECK_HEADERS(sys/param.h)
  723. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  724. [#ifdef HAVE_SYS_TYPES_H
  725. #include <sys/types.h>
  726. #endif
  727. #ifdef HAVE_SYS_SOCKET_H
  728. #include <sys/socket.h>
  729. #endif])
  730. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  731. [#ifdef HAVE_SYS_TYPES_H
  732. #include <sys/types.h>
  733. #endif
  734. #ifdef HAVE_SYS_SOCKET_H
  735. #include <sys/socket.h>
  736. #endif
  737. #ifdef HAVE_NET_IF_H
  738. #include <net/if.h>
  739. #endif])
  740. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  741. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  742. [#ifdef HAVE_SYS_TYPES_H
  743. #include <sys/types.h>
  744. #endif
  745. #ifdef HAVE_SYS_SOCKET_H
  746. #include <sys/socket.h>
  747. #endif
  748. #ifdef HAVE_LIMITS_H
  749. #include <limits.h>
  750. #endif
  751. #ifdef HAVE_LINUX_TYPES_H
  752. #include <linux/types.h>
  753. #endif
  754. #ifdef HAVE_NETINET_IN6_H
  755. #include <netinet/in6.h>
  756. #endif
  757. #ifdef HAVE_NETINET_IN_H
  758. #include <netinet/in.h>
  759. #endif])
  760. if test x$transparent = xtrue ; then
  761. transparent_ok=0
  762. if test x$net_if_found = x1 && test x$net_pfvar_found = x1 ; then
  763. transparent_ok=1
  764. fi
  765. if test x$linux_netfilter_ipv4 = x1 ; then
  766. transparent_ok=1
  767. fi
  768. if test x$transparent_ok = x1 ; then
  769. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  770. case $host in
  771. *-*-openbsd* | *-*-bitrig*)
  772. AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
  773. esac
  774. else
  775. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  776. fi
  777. fi
  778. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  779. [#ifdef HAVE_SYS_TYPES_H
  780. #include <sys/types.h>
  781. #endif
  782. #ifdef HAVE_SYS_TIME_H
  783. #include <sys/time.h>
  784. #endif])
  785. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  786. dnl Watch out.
  787. AC_CHECK_SIZEOF(int8_t)
  788. AC_CHECK_SIZEOF(int16_t)
  789. AC_CHECK_SIZEOF(int32_t)
  790. AC_CHECK_SIZEOF(int64_t)
  791. AC_CHECK_SIZEOF(uint8_t)
  792. AC_CHECK_SIZEOF(uint16_t)
  793. AC_CHECK_SIZEOF(uint32_t)
  794. AC_CHECK_SIZEOF(uint64_t)
  795. AC_CHECK_SIZEOF(intptr_t)
  796. AC_CHECK_SIZEOF(uintptr_t)
  797. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  798. AC_CHECK_SIZEOF(char)
  799. AC_CHECK_SIZEOF(short)
  800. AC_CHECK_SIZEOF(int)
  801. AC_CHECK_SIZEOF(long)
  802. AC_CHECK_SIZEOF(long long)
  803. AC_CHECK_SIZEOF(__int64)
  804. AC_CHECK_SIZEOF(void *)
  805. AC_CHECK_SIZEOF(time_t)
  806. AC_CHECK_SIZEOF(size_t)
  807. AC_CHECK_SIZEOF(pid_t)
  808. AC_CHECK_TYPES([uint, u_char, ssize_t])
  809. dnl used to include sockaddr_storage, but everybody has that.
  810. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  811. [#ifdef HAVE_SYS_TYPES_H
  812. #include <sys/types.h>
  813. #endif
  814. #ifdef HAVE_NETINET_IN_H
  815. #include <netinet/in.h>
  816. #endif
  817. #ifdef HAVE_NETINET_IN6_H
  818. #include <netinet/in6.h>
  819. #endif
  820. #ifdef HAVE_SYS_SOCKET_H
  821. #include <sys/socket.h>
  822. #endif
  823. #ifdef _WIN32
  824. #define _WIN32_WINNT 0x0501
  825. #define WIN32_LEAN_AND_MEAN
  826. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  827. #include <winsock.h>
  828. #else
  829. #include <winsock2.h>
  830. #include <ws2tcpip.h>
  831. #endif
  832. #endif
  833. ])
  834. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  835. [#ifdef HAVE_SYS_TYPES_H
  836. #include <sys/types.h>
  837. #endif
  838. #ifdef HAVE_NETINET_IN_H
  839. #include <netinet/in.h>
  840. #endif
  841. #ifdef HAVE_NETINET_IN6_H
  842. #include <netinet/in6.h>
  843. #endif
  844. #ifdef HAVE_SYS_SOCKET_H
  845. #include <sys/socket.h>
  846. #endif
  847. #ifdef _WIN32
  848. #define _WIN32_WINNT 0x0501
  849. #define WIN32_LEAN_AND_MEAN
  850. #if defined(_MSC_VER) && (_MSC_VER < 1300)
  851. #include <winsock.h>
  852. #else
  853. #include <winsock2.h>
  854. #include <ws2tcpip.h>
  855. #endif
  856. #endif
  857. ])
  858. AC_CHECK_TYPES([rlim_t], , ,
  859. [#ifdef HAVE_SYS_TYPES_H
  860. #include <sys/types.h>
  861. #endif
  862. #ifdef HAVE_SYS_TIME_H
  863. #include <sys/time.h>
  864. #endif
  865. #ifdef HAVE_SYS_RESOURCE_H
  866. #include <sys/resource.h>
  867. #endif
  868. ])
  869. AX_CHECK_SIGN([time_t],
  870. [ AC_DEFINE(TIME_T_IS_SIGNED, 1, [Define if time_t is signed]) ],
  871. [ : ], [
  872. #ifdef HAVE_SYS_TYPES_H
  873. #include <sys/types.h>
  874. #endif
  875. #ifdef HAVE_SYS_TIME_H
  876. #include <sys/time.h>
  877. #endif
  878. #ifdef HAVE_TIME_H
  879. #include <time.h>
  880. #endif
  881. ])
  882. if test "$ax_cv_decl_time_t_signed" = no; then
  883. AC_MSG_WARN([You have an unsigned time_t; some things will probably break. Please tell the Tor developers about your interesting platform.])
  884. fi
  885. AX_CHECK_SIGN([size_t],
  886. [ tor_cv_size_t_signed=yes ],
  887. [ tor_cv_size_t_signed=no ], [
  888. #ifdef HAVE_SYS_TYPES_H
  889. #include <sys/types.h>
  890. #endif
  891. ])
  892. if test "$ax_cv_decl_size_t_signed" = yes; then
  893. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  894. fi
  895. AX_CHECK_SIGN([enum always],
  896. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  897. [ : ], [
  898. enum always { AAA, BBB, CCC };
  899. ])
  900. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  901. #ifdef HAVE_SYS_SOCKET_H
  902. #include <sys/socket.h>
  903. #endif
  904. ])
  905. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  906. AC_CHECK_SIZEOF(cell_t)
  907. # Now make sure that NULL can be represented as zero bytes.
  908. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  909. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  910. [[#include <stdlib.h>
  911. #include <string.h>
  912. #include <stdio.h>
  913. #ifdef HAVE_STDDEF_H
  914. #include <stddef.h>
  915. #endif
  916. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  917. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  918. [tor_cv_null_is_zero=yes],
  919. [tor_cv_null_is_zero=no],
  920. [tor_cv_null_is_zero=cross])])
  921. if test "$tor_cv_null_is_zero" = cross ; then
  922. # Cross-compiling; let's hope that the target isn't raving mad.
  923. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  924. fi
  925. if test "$tor_cv_null_is_zero" != no; then
  926. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  927. [Define to 1 iff memset(0) sets pointers to NULL])
  928. fi
  929. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  930. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  931. [[#include <stdlib.h>
  932. #include <string.h>
  933. #include <stdio.h>
  934. #ifdef HAVE_STDDEF_H
  935. #include <stddef.h>
  936. #endif
  937. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  938. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  939. [tor_cv_dbl0_is_zero=yes],
  940. [tor_cv_dbl0_is_zero=no],
  941. [tor_cv_dbl0_is_zero=cross])])
  942. if test "$tor_cv_dbl0_is_zero" = cross ; then
  943. # Cross-compiling; let's hope that the target isn't raving mad.
  944. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  945. fi
  946. if test "$tor_cv_dbl0_is_zero" != no; then
  947. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  948. [Define to 1 iff memset(0) sets doubles to 0.0])
  949. fi
  950. # And what happens when we malloc zero?
  951. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  952. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  953. [[#include <stdlib.h>
  954. #include <string.h>
  955. #include <stdio.h>
  956. #ifdef HAVE_STDDEF_H
  957. #include <stddef.h>
  958. #endif
  959. int main () { return malloc(0)?0:1; }]])],
  960. [tor_cv_malloc_zero_works=yes],
  961. [tor_cv_malloc_zero_works=no],
  962. [tor_cv_malloc_zero_works=cross])])
  963. if test "$tor_cv_malloc_zero_works" = cross; then
  964. # Cross-compiling; let's hope that the target isn't raving mad.
  965. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  966. fi
  967. if test "$tor_cv_malloc_zero_works" = yes; then
  968. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  969. [Define to 1 iff malloc(0) returns a pointer])
  970. fi
  971. # whether we seem to be in a 2s-complement world.
  972. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  973. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  974. [[int main () { int problem = ((-99) != (~99)+1);
  975. return problem ? 1 : 0; }]])],
  976. [tor_cv_twos_complement=yes],
  977. [tor_cv_twos_complement=no],
  978. [tor_cv_twos_complement=cross])])
  979. if test "$tor_cv_twos_complement" = cross ; then
  980. # Cross-compiling; let's hope that the target isn't raving mad.
  981. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  982. fi
  983. if test "$tor_cv_twos_complement" != no ; then
  984. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  985. [Define to 1 iff we represent negative integers with two's complement])
  986. fi
  987. # What does shifting a negative value do?
  988. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  989. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  990. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  991. [tor_cv_sign_extend=yes],
  992. [tor_cv_sign_extend=no],
  993. [tor_cv_sign_extend=cross])])
  994. if test "$tor_cv_sign_extend" = cross ; then
  995. # Cross-compiling; let's hope that the target isn't raving mad.
  996. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  997. fi
  998. if test "$tor_cv_sign_extend" != no ; then
  999. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1000. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1001. fi
  1002. # Whether we should use the dmalloc memory allocation debugging library.
  1003. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1004. AC_ARG_WITH(dmalloc,
  1005. [ --with-dmalloc Use debug memory allocation library. ],
  1006. [if [[ "$withval" = "yes" ]]; then
  1007. dmalloc=1
  1008. AC_MSG_RESULT(yes)
  1009. else
  1010. dmalloc=1
  1011. AC_MSG_RESULT(no)
  1012. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1013. )
  1014. if [[ $dmalloc -eq 1 ]]; then
  1015. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1016. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1017. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1018. AC_DEFINE(DMALLOC_FUNC_CHECK, 1, [Enable dmalloc's malloc function check])
  1019. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1020. fi
  1021. AC_ARG_WITH(tcmalloc,
  1022. [ --with-tcmalloc Use tcmalloc memory allocation library. ],
  1023. [ tcmalloc=yes ], [ tcmalloc=no ])
  1024. if test x$tcmalloc = xyes ; then
  1025. LDFLAGS="-ltcmalloc $LDFLAGS"
  1026. fi
  1027. using_custom_malloc=no
  1028. if test x$enable_openbsd_malloc = xyes ; then
  1029. using_custom_malloc=yes
  1030. fi
  1031. if test x$tcmalloc = xyes ; then
  1032. using_custom_malloc=yes
  1033. fi
  1034. if test $using_custom_malloc = no ; then
  1035. AC_CHECK_FUNCS(mallinfo)
  1036. fi
  1037. # By default, we're going to assume we don't have mlockall()
  1038. # bionic and other platforms have various broken mlockall subsystems.
  1039. # Some systems don't have a working mlockall, some aren't linkable,
  1040. # and some have it but don't declare it.
  1041. AC_CHECK_FUNCS(mlockall)
  1042. AC_CHECK_DECLS([mlockall], , , [
  1043. #ifdef HAVE_SYS_MMAN_H
  1044. #include <sys/mman.h>
  1045. #endif])
  1046. # Allow user to specify an alternate syslog facility
  1047. AC_ARG_WITH(syslog-facility,
  1048. [ --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
  1049. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1050. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1051. AC_SUBST(LOGFACILITY)
  1052. # Check if we have getresuid and getresgid
  1053. AC_CHECK_FUNCS(getresuid getresgid)
  1054. # Check for gethostbyname_r in all its glorious incompatible versions.
  1055. # (This logic is based on that in Python's configure.in)
  1056. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1057. [Define this if you have any gethostbyname_r()])
  1058. AC_CHECK_FUNC(gethostbyname_r, [
  1059. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1060. OLD_CFLAGS=$CFLAGS
  1061. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1062. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
  1063. #include <netdb.h>
  1064. ], [[
  1065. char *cp1, *cp2;
  1066. struct hostent *h1, *h2;
  1067. int i1, i2;
  1068. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1069. ]])],[
  1070. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1071. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1072. [Define this if gethostbyname_r takes 6 arguments])
  1073. AC_MSG_RESULT(6)
  1074. ], [
  1075. AC_TRY_COMPILE([
  1076. #include <netdb.h>
  1077. ], [
  1078. char *cp1, *cp2;
  1079. struct hostent *h1;
  1080. int i1, i2;
  1081. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1082. ], [
  1083. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1084. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1085. [Define this if gethostbyname_r takes 5 arguments])
  1086. AC_MSG_RESULT(5)
  1087. ], [
  1088. AC_TRY_COMPILE([
  1089. #include <netdb.h>
  1090. ], [
  1091. char *cp1;
  1092. struct hostent *h1;
  1093. struct hostent_data hd;
  1094. (void) gethostbyname_r(cp1,h1,&hd);
  1095. ], [
  1096. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1097. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1098. [Define this if gethostbyname_r takes 3 arguments])
  1099. AC_MSG_RESULT(3)
  1100. ], [
  1101. AC_MSG_RESULT(0)
  1102. ])
  1103. ])
  1104. ])
  1105. CFLAGS=$OLD_CFLAGS
  1106. ])
  1107. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1108. tor_cv_have_func_macro,
  1109. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1110. #include <stdio.h>
  1111. int main(int c, char **v) { puts(__func__); }])],
  1112. tor_cv_have_func_macro=yes,
  1113. tor_cv_have_func_macro=no))
  1114. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1115. tor_cv_have_FUNC_macro,
  1116. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1117. #include <stdio.h>
  1118. int main(int c, char **v) { puts(__FUNC__); }])],
  1119. tor_cv_have_FUNC_macro=yes,
  1120. tor_cv_have_FUNC_macro=no))
  1121. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1122. tor_cv_have_FUNCTION_macro,
  1123. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1124. #include <stdio.h>
  1125. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1126. tor_cv_have_FUNCTION_macro=yes,
  1127. tor_cv_have_FUNCTION_macro=no))
  1128. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1129. tor_cv_have_environ_declared,
  1130. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1131. /* We define _GNU_SOURCE here because it is also defined in compat.c.
  1132. * Without it environ doesn't get declared. */
  1133. #define _GNU_SOURCE
  1134. #ifdef HAVE_UNISTD_H
  1135. #include <unistd.h>
  1136. #endif
  1137. #include <stdlib.h>
  1138. int main(int c, char **v) { char **t = environ; }])],
  1139. tor_cv_have_environ_declared=yes,
  1140. tor_cv_have_environ_declared=no))
  1141. if test "$tor_cv_have_func_macro" = 'yes'; then
  1142. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1143. fi
  1144. if test "$tor_cv_have_FUNC_macro" = 'yes'; then
  1145. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1146. fi
  1147. if test "$tor_cv_have_FUNCTION_macro" = 'yes'; then
  1148. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1149. [Defined if the compiler supports __FUNCTION__])
  1150. fi
  1151. if test "$tor_cv_have_environ_declared" = 'yes'; then
  1152. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1153. [Defined if we have extern char **environ already declared])
  1154. fi
  1155. # $prefix stores the value of the --prefix command line option, or
  1156. # NONE if the option wasn't set. In the case that it wasn't set, make
  1157. # it be the default, so that we can use it to expand directories now.
  1158. if test "x$prefix" = "xNONE"; then
  1159. prefix=$ac_default_prefix
  1160. fi
  1161. # and similarly for $exec_prefix
  1162. if test "x$exec_prefix" = "xNONE"; then
  1163. exec_prefix=$prefix
  1164. fi
  1165. if test "x$BUILDDIR" = "x"; then
  1166. BUILDDIR=`pwd`
  1167. fi
  1168. AC_SUBST(BUILDDIR)
  1169. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1170. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1171. if test "x$CONFDIR" = "x"; then
  1172. CONFDIR=`eval echo $sysconfdir/tor`
  1173. fi
  1174. AC_SUBST(CONFDIR)
  1175. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1176. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1177. BINDIR=`eval echo $bindir`
  1178. AC_SUBST(BINDIR)
  1179. LOCALSTATEDIR=`eval echo $localstatedir`
  1180. AC_SUBST(LOCALSTATEDIR)
  1181. if test "$bwin32" = true; then
  1182. # Test if the linker supports the --nxcompat and --dynamicbase options
  1183. # for Windows
  1184. save_LDFLAGS="$LDFLAGS"
  1185. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1186. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1187. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1188. [AC_MSG_RESULT([yes])]
  1189. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1190. [AC_MSG_RESULT([no])]
  1191. )
  1192. LDFLAGS="$save_LDFLAGS"
  1193. fi
  1194. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1195. # than autoconf's macros like.
  1196. if test "$GCC" = yes; then
  1197. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1198. # accident waiting to happen.
  1199. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1200. else
  1201. # Autoconf sets -g -O2 by default. Override optimization level
  1202. # for non-gcc compilers
  1203. CFLAGS="$CFLAGS -O"
  1204. enable_gcc_warnings=no
  1205. enable_gcc_warnings_advisory=no
  1206. fi
  1207. # OS X Lion started deprecating the system openssl. Let's just disable
  1208. # all deprecation warnings on OS X. Also, to potentially make the binary
  1209. # a little smaller, let's enable dead_strip.
  1210. case "$host_os" in
  1211. darwin*)
  1212. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1213. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1214. esac
  1215. # Add some more warnings which we use in development but not in the
  1216. # released versions. (Some relevant gcc versions can't handle these.)
  1217. if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xyes; then
  1218. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1219. #if !defined(__GNUC__) || (__GNUC__ < 4)
  1220. #error
  1221. #endif])], have_gcc4=yes, have_gcc4=no)
  1222. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1223. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
  1224. #error
  1225. #endif])], have_gcc42=yes, have_gcc42=no)
  1226. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  1227. #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
  1228. #error
  1229. #endif])], have_gcc43=yes, have_gcc43=no)
  1230. save_CFLAGS="$CFLAGS"
  1231. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1232. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], have_shorten64_flag=yes,
  1233. have_shorten64_flag=no)
  1234. CFLAGS="$save_CFLAGS"
  1235. case $host in
  1236. *-*-openbsd* | *-*-bitrig*)
  1237. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1238. # That's fine, except that the headers don't pass -Wredundant-decls.
  1239. # Therefore, let's disable -Wsystem-headers when we're building
  1240. # with maximal warnings on OpenBSD.
  1241. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1242. esac
  1243. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  1244. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  1245. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  1246. CFLAGS="$CFLAGS -Wwrite-strings -Wmissing-declarations -Wredundant-decls"
  1247. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  1248. if test x$enable_gcc_warnings = xyes; then
  1249. CFLAGS="$CFLAGS -Werror"
  1250. fi
  1251. # Disabled, so we can use mallinfo(): -Waggregate-return
  1252. if test x$have_gcc4 = xyes ; then
  1253. # These warnings break gcc 3.3.5 and work on gcc 4.0.2
  1254. CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement -Wold-style-definition"
  1255. fi
  1256. if test x$have_gcc42 = xyes ; then
  1257. # These warnings break gcc 4.0.2 and work on gcc 4.2
  1258. # XXXX020 See if any of these work with earlier versions.
  1259. CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1"
  1260. # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3.
  1261. fi
  1262. if test x$have_gcc42 = xyes && test x$have_clang = xno; then
  1263. # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
  1264. CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
  1265. fi
  1266. if test x$have_gcc43 = xyes ; then
  1267. # These warnings break gcc 4.2 and work on gcc 4.3
  1268. # XXXX020 See if any of these work with earlier versions.
  1269. CFLAGS="$CFLAGS -Wextra -Warray-bounds"
  1270. fi
  1271. if test x$have_shorten64_flag = xyes ; then
  1272. CFLAGS="$CFLAGS -Wshorten-64-to-32"
  1273. fi
  1274. ##This will break the world on some 64-bit architectures
  1275. # CFLAGS="$CFLAGS -Winline"
  1276. fi
  1277. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  1278. AC_CONFIG_FILES([
  1279. Doxyfile
  1280. Makefile
  1281. contrib/suse/tor.sh
  1282. contrib/tor.logrotate
  1283. contrib/tor.sh
  1284. contrib/torctl
  1285. contrib/torify
  1286. src/config/torrc.sample
  1287. ])
  1288. AC_OUTPUT
  1289. if test -x /usr/bin/perl && test -x ./contrib/updateVersions.pl ; then
  1290. ./contrib/updateVersions.pl
  1291. fi