configure.in 25 KB

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  1. dnl $Id$
  2. dnl Copyright (c) 2001-2004, Roger Dingledine
  3. dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
  4. dnl See LICENSE for licensing information
  5. AC_INIT
  6. AM_INIT_AUTOMAKE(tor, 0.1.2.4-alpha-dev)
  7. AM_CONFIG_HEADER(orconfig.h)
  8. AC_CANONICAL_HOST
  9. if test -f /etc/redhat-release; then
  10. CFLAGS="$CFLAGS -I/usr/kerberos/include"
  11. fi
  12. AC_ARG_ENABLE(debug,
  13. AC_HELP_STRING(--enable-debug, compile with debugging info),
  14. [if test x$enableval = xyes; then
  15. CFLAGS="$CFLAGS -g"
  16. fi])
  17. AC_ARG_ENABLE(eventdns,
  18. AC_HELP_STRING(--enable-eventdns, enable asynchronous dns module),
  19. [case "${enableval}" in
  20. yes) eventdns=true ;;
  21. no) eventdns=false ;;
  22. *) AC_MSG_ERROR(bad value for --enable-eventdns) ;;
  23. esac], [eventdns=true])
  24. AM_CONDITIONAL(EVENTDNS, test x$eventdns = xtrue)
  25. if test x$eventdns = xtrue; then
  26. AC_DEFINE([USE_EVENTDNS], 1, "Define to 1 if we'll be using eventdns.c")
  27. fi
  28. AC_ARG_ENABLE(transparent,
  29. AC_HELP_STRING(--disable-transparent, disable transparent proxy support),
  30. [case "${enableval}" in
  31. yes) transparent=true ;;
  32. no) transparent=false ;;
  33. *) AC_MSG_ERROR(bad value for --enable-transparent) ;;
  34. esac], [transparent=true])
  35. AC_ARG_ENABLE(threads,
  36. AC_HELP_STRING(--disable-threads, disable multi-threading support))
  37. if test x$enable_threads = x; then
  38. case $host in
  39. *-*-netbsd* | *-*-openbsd* )
  40. # Don't try multithreading on netbsd -- there is no threadsafe DNS
  41. # lookup function there.
  42. if test x$eventdns != xtrue; then
  43. AC_MSG_NOTICE([You are running OpenBSD or NetBSD; I am assuming that
  44. getaddrinfo is not threadsafe here, so I will disable threads.])
  45. enable_threads="no"
  46. fi ;;
  47. *-*-solaris* )
  48. # Don't try multithreading on solaris -- cpuworkers seem to lock.
  49. AC_MSG_NOTICE([You are running Solaris; Sometimes threading makes
  50. cpu workers lock up here, so I will disable threads.])
  51. enable_threads="no";;
  52. *)
  53. enable_threads="yes";;
  54. esac
  55. fi
  56. if test $enable_threads = "yes"; then
  57. AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
  58. fi
  59. case $host in
  60. *-*-solaris* )
  61. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  62. ;;
  63. esac
  64. AC_ARG_ENABLE(gcc-warnings,
  65. AC_HELP_STRING(--enable-gcc-warnings, enable verbose warnings))
  66. AC_PROG_CC
  67. AC_PROG_MAKE_SET
  68. AC_PROG_RANLIB
  69. # The big search for OpenSSL
  70. # copied from openssh's configure.ac
  71. tryssldir=""
  72. AC_ARG_WITH(ssl-dir,
  73. [ --with-ssl-dir=PATH Specify path to OpenSSL installation ],
  74. [
  75. if test "x$withval" != "xno" ; then
  76. tryssldir=$withval
  77. fi
  78. ]
  79. )
  80. trylibeventdir=""
  81. AC_ARG_WITH(libevent-dir,
  82. [ --with-libevent-dir=PATH Specify path to Libevent installation ],
  83. [
  84. if test "x$withval" != "xno" ; then
  85. trylibeventdir=$withval
  86. fi
  87. ]
  88. )
  89. TORUSER=_tor
  90. AC_ARG_WITH(tor-user,
  91. [ --with-tor-user=NAME Specify username for tor daemon ],
  92. [
  93. TORUSER=$withval
  94. ]
  95. )
  96. AC_SUBST(TORUSER)
  97. TORGROUP=_tor
  98. AC_ARG_WITH(tor-group,
  99. [ --with-tor-group=NAME Specify group name for tor daemon ],
  100. [
  101. TORGROUP=$withval
  102. ]
  103. )
  104. AC_SUBST(TORGROUP)
  105. dnl If WIN32 is defined and non-zero, we are building for win32
  106. AC_MSG_CHECKING([for win32])
  107. AC_RUN_IFELSE([
  108. int main(int c, char **v) {
  109. #ifdef WIN32
  110. #if WIN32
  111. return 0;
  112. #else
  113. return 1;
  114. #endif
  115. #else
  116. return 2;
  117. #endif
  118. }],
  119. bwin32=true; AC_MSG_RESULT([yes]),
  120. bwin32=false; AC_MSG_RESULT([no]),
  121. bwin32=cross; AC_MSG_RESULT([cross])
  122. )
  123. if test $bwin32 = cross; then
  124. AC_MSG_CHECKING([for win32 (cross)])
  125. AC_COMPILE_IFELSE([
  126. #ifdef WIN32
  127. int main(int c, char **v) {return 0;}
  128. #else
  129. #error
  130. int main(int c, char **v) {return x(y);}
  131. #endif
  132. ],
  133. bwin32=true; AC_MSG_RESULT([yes]),
  134. bwin32=false; AC_MSG_RESULT([no]))
  135. fi
  136. if test $bwin32 = true; then
  137. AC_DEFINE(MS_WINDOWS, 1, [Define to 1 if we are building for Windows.])
  138. fi
  139. dnl Enable C99 when compiling with MIPSpro
  140. AC_MSG_CHECKING([for MIPSpro compiler])
  141. AC_TRY_COMPILE([], [
  142. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  143. #error
  144. return x(y);
  145. #endif
  146. ],
  147. bmipspro=false; AC_MSG_RESULT([no]),
  148. bmipspro=true; AC_MSG_RESULT([yes]))
  149. if test $bmipspro = true; then
  150. CFLAGS="$CFLAGS -c99"
  151. fi
  152. AC_SEARCH_LIBS(socket, [socket])
  153. AC_SEARCH_LIBS(gethostbyname, [nsl])
  154. AC_SEARCH_LIBS(dlopen, [dl])
  155. AC_SEARCH_LIBS(inet_aton, [resolv])
  156. if test $enable_threads = "yes"; then
  157. AC_SEARCH_LIBS(pthread_create, [pthread])
  158. AC_SEARCH_LIBS(pthread_detach, [pthread])
  159. fi
  160. dnl -------------------------------------------------------------------
  161. dnl Check for functions before libevent, since libevent-1.2 apparently
  162. dnl exports strlcpy without defining it in a header.
  163. AC_CHECK_FUNCS(gettimeofday ftime socketpair uname inet_aton strptime getrlimit strlcat strlcpy strtoull ftello getaddrinfo localtime_r gmtime_r memmem strtok_r)
  164. if test $enable_threads = "yes"; then
  165. AC_CHECK_HEADERS(pthread.h)
  166. AC_CHECK_FUNCS(pthread_create)
  167. fi
  168. dnl ------------------------------------------------------
  169. dnl Where do you live, libevent? And how do we call you?
  170. AC_CACHE_CHECK([for libevent directory], ac_cv_libevent_dir, [
  171. saved_LIBS="$LIBS"
  172. saved_LDFLAGS="$LDFLAGS"
  173. saved_CPPFLAGS="$CPPFLAGS"
  174. le_found=no
  175. for ledir in $trylibeventdir "" $prefix /usr/local /usr/pkg ; do
  176. LDFLAGS="$saved_LDFLAGS"
  177. if test $bwin32 = true; then
  178. LIBS="$saved_LIBS -levent -lws2_32"
  179. else
  180. LIBS="$saved_LIBS -levent"
  181. fi
  182. # Skip the directory if it isn't there.
  183. if test ! -z "$ledir" -a ! -d "$ledir" ; then
  184. continue;
  185. fi
  186. if test ! -z "$ledir" ; then
  187. if test -d "$ledir/lib" ; then
  188. LDFLAGS="-L$ledir/lib $LDFLAGS"
  189. else
  190. LDFLAGS="-L$ledir $LDFLAGS"
  191. fi
  192. if test -d "$ledir/include" ; then
  193. CPPFLAGS="-I$ledir/include $CPPFLAGS"
  194. else
  195. CPPFLAGS="-I$ledir $CPPFLAGS"
  196. fi
  197. fi
  198. # Can I compile and link it?
  199. AC_TRY_LINK([#include <sys/time.h>
  200. #include <sys/types.h>
  201. #include <event.h>], [ event_init(); ],
  202. [ libevent_linked=yes ], [ libevent_linked=no ])
  203. if test $libevent_linked = yes; then
  204. if test ! -z "$ledir" ; then
  205. ac_cv_libevent_dir=$ledir
  206. else
  207. ac_cv_libevent_dir="(system)"
  208. fi
  209. le_found=yes
  210. break
  211. fi
  212. done
  213. LIBS="$saved_LIBS"
  214. LDFLAGS="$saved_LDFLAGS"
  215. CPPFLAGS="$saved_CPPFLAGS"
  216. if test $le_found = no ; then
  217. AC_MSG_ERROR([Could not find a linkable libevent. You can specify an explicit path using --with-libevent-dir])
  218. fi
  219. ])
  220. if test $bwin32 = true; then
  221. LIBS="$LIBS -levent -lws2_32"
  222. else
  223. LIBS="$LIBS -levent"
  224. fi
  225. if test $ac_cv_libevent_dir != "(system)"; then
  226. if test -d "$ac_cv_libevent_dir/lib" ; then
  227. LDFLAGS="-L$ac_cv_libevent_dir/lib $LDFLAGS"
  228. le_libdir="$ac_cv_libevent_dir/lib"
  229. else
  230. LDFLAGS="-L$ac_cv_libevent_dir $LDFLAGS"
  231. le_libdir="$ac_cv_libevent_dir"
  232. fi
  233. if test -d "$ac_cv_libevent_dir/include" ; then
  234. CPPFLAGS="-I$ac_cv_libevent_dir/include $CPPFLAGS"
  235. else
  236. CPPFLAGS="-I$ac_cv_libevent_dir $CPPFLAGS"
  237. fi
  238. fi
  239. if test -z "$CROSS_COMPILE"; then
  240. AC_CACHE_CHECK([whether we need extra options to link libevent],
  241. ac_cv_libevent_linker_option, [
  242. saved_LDFLAGS="$LDFLAGS"
  243. le_runs=no
  244. linked_with=nothing
  245. for le_extra in "" "-Wl,-R$le_libdir" "-R$le_libdir" "-Wl,-rpath,$le_libdir" ; do
  246. LDFLAGS="$le_extra $saved_LDFLAGS"
  247. AC_TRY_RUN([void *event_init(void);
  248. int main(int c, char **v) {
  249. event_init(); return 0;
  250. }],
  251. libevent_runs=yes, libevent_runs=no, libevent_runs=cross)
  252. if test $libevent_runs != no ; then
  253. if test -z "$le_extra" ; then
  254. ac_cv_libevent_linker_option='(none)'
  255. else
  256. ac_cv_libevent_linker_option=$le_extra
  257. fi
  258. le_runs=yes
  259. break
  260. fi
  261. done
  262. if test $le_runs = no ; then
  263. AC_MSG_ERROR([Found linkable libevent in $ac_cv_libevent_dir, but it doesn't run, even with -R. Maybe specify another using --with-libevent-dir?])
  264. fi
  265. LDFLAGS="$saved_LDFLAGS"
  266. ])
  267. if test $ac_cv_libevent_linker_option != '(none)' ; then
  268. LDFLAGS="$ac_cv_libevent_linker_option $LDFLAGS"
  269. fi
  270. fi
  271. dnl Now check for particular libevent functions.
  272. AC_CHECK_FUNCS(event_get_version event_get_method event_set_log_callback)
  273. dnl ------------------------------------------------------
  274. dnl Where do you live, openssl? And how do we call you?
  275. AC_CACHE_CHECK([for OpenSSL directory], ac_cv_openssl_dir, [
  276. saved_LIBS="$LIBS"
  277. saved_LDFLAGS="$LDFLAGS"
  278. saved_CPPFLAGS="$CPPFLAGS"
  279. ssl_found=no
  280. for ssldir in $tryssldir "" $prefix /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /usr/pkg /opt /opt/openssl ; do
  281. LDFLAGS="$saved_LDFLAGS"
  282. if test $bwin32 = true; then
  283. LIBS="$saved_LIBS -lssl -lcrypto -lws2_32 -lgdi32"
  284. else
  285. LIBS="$saved_LIBS -lssl -lcrypto"
  286. fi
  287. # Skip the directory if it isn't there.
  288. if test ! -z "$ssldir" -a ! -d "$ssldir" ; then
  289. continue;
  290. fi
  291. if test ! -z "$ssldir" ; then
  292. if test -d "$ssldir/lib" ; then
  293. LDFLAGS="-L$ssldir/lib $LDFLAGS"
  294. else
  295. LDFLAGS="-L$ssldir $LDFLAGS"
  296. fi
  297. if test -d "$ssldir/include" ; then
  298. CPPFLAGS="-I$ssldir/include $CPPFLAGS"
  299. else
  300. CPPFLAGS="-I$ssldir $CPPFLAGS"
  301. fi
  302. fi
  303. # Can I link it?
  304. AC_TRY_LINK([#include <openssl/rand.h>],
  305. [ RAND_add((void*)0,0,0); ],
  306. [ openssl_linked=yes ], [ openssl_linked=no ])
  307. if test $openssl_linked = yes; then
  308. if test ! -z "$ssldir" ; then
  309. ac_cv_openssl_dir=$ssldir
  310. else
  311. ac_cv_openssl_dir="(system)"
  312. fi
  313. ssl_found=yes
  314. break
  315. fi
  316. done
  317. LIBS="$saved_LIBS"
  318. LDFLAGS="$saved_LDFLAGS"
  319. CPPFLAGS="$saved_CPPFLAGS"
  320. if test $ssl_found = no ; then
  321. AC_MSG_ERROR([Could not find a linkable OpenSSL. You can specify an explicit path using --with-ssl-dir])
  322. fi
  323. ])
  324. if test $bwin32 = true; then
  325. LIBS="$LIBS -lssl -lcrypto -lws2_32 -lgdi32"
  326. else
  327. LIBS="$LIBS -lssl -lcrypto"
  328. fi
  329. if test "$ac_cv_openssl_dir" != "(system)"; then
  330. if test -d "$ac_cv_openssl_dir/lib" ; then
  331. LDFLAGS="-L$ac_cv_openssl_dir/lib $LDFLAGS"
  332. ssl_libdir="$ac_cv_openssl_dir/lib"
  333. else
  334. LDFLAGS="-L$ac_cv_openssl_dir $LDFLAGS"
  335. ssl_libdir="$ac_cv_openssl_dir"
  336. fi
  337. if test -d "$ac_cv_openssl_dir/include" ; then
  338. CPPFLAGS="-I$ac_cv_openssl_dir/include $CPPFLAGS"
  339. else
  340. CPPFLAGS="-I$ac_cv_openssl_dir $CPPFLAGS"
  341. fi
  342. fi
  343. if test -z "$CROSS_COMPILE"
  344. then
  345. AC_CACHE_CHECK([whether we need extra options to link OpenSSL],
  346. ac_cv_openssl_linker_option, [
  347. saved_LDFLAGS="$LDFLAGS"
  348. ssl_runs=no
  349. linked_with=nothing
  350. for ssl_extra in "" "-Wl,-R$ssl_libdir" "-R$ssl_libdir" ; do
  351. LDFLAGS="$ssl_extra $saved_LDFLAGS"
  352. AC_TRY_RUN([
  353. #include <string.h>
  354. #include <openssl/rand.h>
  355. int main(void)
  356. {
  357. char a[2048];
  358. memset(a, 0, sizeof(a));
  359. RAND_add(a, sizeof(a), sizeof(a));
  360. return(RAND_status() <= 0);
  361. }
  362. ],
  363. openssl_runs=yes, openssl_runs=no, openssl_runs=cross)
  364. if test $openssl_runs != no ; then
  365. if test "$linked_with" = nothing; then
  366. linked_with="$ssl_extra"
  367. fi
  368. AC_TRY_RUN([
  369. #include <openssl/opensslv.h>
  370. #include <openssl/crypto.h>
  371. int main(void) {
  372. return (OPENSSL_VERSION_NUMBER == SSLeay()) == 0;
  373. }],
  374. right_version=yes, right_version=no)
  375. if test "$right_version" = yes; then
  376. if test -z "$ssl_extra" ; then
  377. ac_cv_openssl_linker_option='(none)'
  378. else
  379. ac_cv_openssl_linker_option=$ssl_extra
  380. fi
  381. ssl_runs=yes
  382. break
  383. fi
  384. fi
  385. done
  386. if test $ssl_runs = no ; then
  387. if test "$linked_with" = 'nothing' ; then
  388. AC_MSG_ERROR([Found linkable OpenSSL in $ac_cv_openssl_dir, but it doesn't run, even with -R. Maybe specify another using --with-ssl-dir?])
  389. else
  390. if test -z "$linked_with" ; then
  391. ac_cv_openssl_linker_option='(none)'
  392. else
  393. ac_cv_openssl_linker_option=$linked_with
  394. fi
  395. AC_MSG_WARN([I managed to make OpenSSL link and run, but I couldn't make it link against the same version I found header files for.])
  396. fi
  397. fi
  398. LDFLAGS="$saved_LDFLAGS"
  399. ])
  400. if test "$ac_cv_openssl_linker_option" != '(none)' ; then
  401. LDFLAGS="$ac_cv_openssl_linker_option $LDFLAGS"
  402. fi
  403. fi
  404. dnl Make sure to enable support for large off_t if avalable.
  405. AC_SYS_LARGEFILE
  406. dnl The warning message here is no longer strictly accurate.
  407. AC_CHECK_HEADERS(unistd.h string.h signal.h ctype.h sys/stat.h sys/types.h fcntl.h sys/fcntl.h sys/time.h errno.h assert.h time.h, , AC_MSG_WARN(some headers were not found, compilation may fail))
  408. AC_CHECK_HEADERS(netdb.h sys/ioctl.h sys/socket.h arpa/inet.h netinet/in.h pwd.h grp.h)
  409. AC_CHECK_HEADERS(event.h, , AC_MSG_ERROR(Libevent header (event.h) not found. Tor requires libevent to build.),
  410. [#ifdef HAVE_SYS_TYPES_H
  411. #include <sys/types.h>
  412. #endif
  413. #ifdef HAVE_SYS_TIME_H
  414. #include <sys/time.h>
  415. #else
  416. struct timeval {
  417. long tv_sec;
  418. long tv_usec;
  419. };
  420. #endif])
  421. AC_CHECK_HEADERS(zlib.h, , AC_MSG_ERROR(Zlib header (zlib.h) not found. Tor requires zlib to build. You may need to install a zlib development package.))
  422. dnl These headers are not essential
  423. AC_CHECK_HEADERS(stdint.h sys/types.h inttypes.h sys/param.h sys/wait.h limits.h sys/limits.h netinet/in.h arpa/inet.h machine/limits.h syslog.h sys/time.h sys/resource.h inttypes.h utime.h sys/utime.h sys/mman.h)
  424. AC_CHECK_HEADERS(net/if.h, [net_if_found=1], [net_if_found=0],
  425. [#ifdef HAVE_SYS_TYPES_H
  426. #include <sys/types.h>
  427. #endif
  428. #ifdef HAVE_SYS_SOCKET_H
  429. #include <sys/socket.h>
  430. #endif])
  431. AC_CHECK_HEADERS(net/pfvar.h, [net_pfvar_found=1], [net_pfvar_found=0],
  432. [#ifdef HAVE_SYS_TYPES_H
  433. #include <sys/types.h>
  434. #endif
  435. #ifdef HAVE_SYS_SOCKET_H
  436. #include <sys/socket.h>
  437. #endif
  438. #ifdef HAVE_NET_IF_H
  439. #include <net/if.h>
  440. #endif])
  441. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  442. [linux_netfilter_ipv4=1], [linux_netfilter_ipv4=0],
  443. [#ifdef HAVE_SYS_SOCKET_H
  444. #include <sys/socket.h>
  445. #endif])
  446. if test x$transparent = xtrue ; then
  447. transparent_ok=0
  448. if test x$net_if_found = x1 -a x$net_pfvar_found = x1 ; then
  449. transparent_ok=1
  450. fi
  451. if test x$linux_netfilter_ipv4 = x1 ; then
  452. transparent_ok=1
  453. fi
  454. if test x$transparent_ok = x1 ; then
  455. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  456. case $host in
  457. *-*-openbsd*)
  458. AC_DEFINE(OPENBSD, 1, "Define to handle pf on OpenBSD properly") ;;
  459. esac
  460. else
  461. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  462. fi
  463. fi
  464. AC_FUNC_FSEEKO
  465. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  466. [#ifdef HAVE_SYS_TYPES_H
  467. #include <sys/types.h>
  468. #endif
  469. #ifdef HAVE_SYS_TIME_H
  470. #include <sys/time.h>
  471. #endif])
  472. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  473. dnl Watch out.
  474. AC_CHECK_SIZEOF(int8_t)
  475. AC_CHECK_SIZEOF(int16_t)
  476. AC_CHECK_SIZEOF(int32_t)
  477. AC_CHECK_SIZEOF(int64_t)
  478. AC_CHECK_SIZEOF(uint8_t)
  479. AC_CHECK_SIZEOF(uint16_t)
  480. AC_CHECK_SIZEOF(uint32_t)
  481. AC_CHECK_SIZEOF(uint64_t)
  482. AC_CHECK_SIZEOF(intptr_t)
  483. AC_CHECK_SIZEOF(uintptr_t)
  484. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  485. AC_CHECK_SIZEOF(char)
  486. AC_CHECK_SIZEOF(short)
  487. AC_CHECK_SIZEOF(int)
  488. AC_CHECK_SIZEOF(long)
  489. AC_CHECK_SIZEOF(long long)
  490. AC_CHECK_SIZEOF(__int64)
  491. AC_CHECK_SIZEOF(void *)
  492. AC_CHECK_SIZEOF(time_t)
  493. AC_CHECK_SIZEOF(size_t)
  494. AC_CHECK_TYPES([uint, u_char])
  495. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_storage], , ,
  496. [#include <netinet/in.h>
  497. #include <sys/socket.h>])
  498. if test -z "$CROSS_COMPILE"; then
  499. AC_CACHE_CHECK([whether time_t is signed], tor_cv_time_t_signed, [
  500. AC_TRY_RUN([
  501. int main(int c, char**v) { if (((time_t)-1)<0) return 1; else return 0; }],
  502. tor_cv_time_t_signed=no, tor_cv_time_t_signed=yes)
  503. ])
  504. else
  505. # Cross-compiling; let's hope the target platform isn't loony.
  506. AC_MSG_NOTICE([Cross compiling: assuming that time_t is signed.])
  507. tor_cv_time_t_signed=yes
  508. fi
  509. if test $tor_cv_time_t_signed = yes; then
  510. AC_DEFINE([TIME_T_IS_SIGNED], 1,
  511. [Define to 1 iff time_t is signed])
  512. fi
  513. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  514. #ifdef HAVE_SYS_SOCKET_H
  515. #include <sys/socket.h>
  516. #endif
  517. ])
  518. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  519. AC_CHECK_SIZEOF(cell_t)
  520. # Now make sure that NULL can be represented as zero bytes.
  521. if test -z "$CROSS_COMPILE"; then
  522. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  523. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  524. [[#include <stdlib.h>
  525. #include <string.h>
  526. #include <stdio.h>
  527. #ifdef HAVE_STDDEF_H
  528. #include <stddef.h>
  529. #endif
  530. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  531. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  532. [tor_cv_null_is_zero=yes],
  533. [tor_cv_null_is_zero=no],
  534. [tor_cv_null_is_zero=cross])])
  535. else
  536. # Cross-compiling; let's hope that the target isn't raving mad.
  537. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  538. tor_cv_null_is_zero=yes
  539. fi
  540. if test $tor_cv_null_is_zero = yes; then
  541. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  542. [Define to 1 iff memset(0) sets pointers to NULL])
  543. fi
  544. # And what happens when we malloc zero?
  545. if test -z "$CROSS_COMPILE"; then
  546. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  547. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  548. [[#include <stdlib.h>
  549. #include <string.h>
  550. #include <stdio.h>
  551. #ifdef HAVE_STDDEF_H
  552. #include <stddef.h>
  553. #endif
  554. int main () { return malloc(0)?0:1; }]])],
  555. [tor_cv_malloc_zero_works=yes],
  556. [tor_cv_malloc_zero_works=no],
  557. [tor_cv_malloc_zero_works=cross])])
  558. else
  559. # Cross-compiling; let's hope that the target isn't raving mad.
  560. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  561. tor_cv_malloc_zero_works=no
  562. fi
  563. if test $tor_cv_malloc_zero_works = yes; then
  564. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  565. [Define to 1 iff malloc(0) returns a pointer])
  566. fi
  567. # whether we seem to be in a 2s-complement world.
  568. if test -z "$CROSS_COMPILE"; then
  569. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  570. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  571. [[int main () { int problem = ((-99) != (~99)+1);
  572. return problem ? 1 : 0; }]])],
  573. [tor_cv_twos_complement=yes],
  574. [tor_cv_twos_complement=no],
  575. [tor_cv_twos_complement=cross])])
  576. else
  577. # Cross-compiling; let's hope that the target isn't raving mad.
  578. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  579. tor_cv_twos_complement=yes
  580. fi
  581. if test $tor_cv_twos_complement = yes; then
  582. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  583. [Define to 1 iff we represent negative integers with two's complement])
  584. fi
  585. # Whether we should use the dmalloc memory allocation debugging library.
  586. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  587. AC_ARG_WITH(dmalloc,
  588. [ --with-dmalloc Use debug memory allocation library. ],
  589. [if [[ "$withval" = "yes" ]]; then
  590. dmalloc=1
  591. AC_MSG_RESULT(yes)
  592. else
  593. dmalloc=1
  594. AC_MSG_RESULT(no)
  595. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  596. )
  597. if [[ $dmalloc -eq 1 ]]; then
  598. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  599. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  600. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  601. AC_DEFINE(DMALLOC_FUNC_CHECK, 1, [Enable dmalloc's malloc function check])
  602. fi
  603. # Allow user to specify an alternate syslog facility
  604. AC_ARG_WITH(syslog-facility,
  605. [ --with-syslog-facility=LOG syslog facility to use (default=LOG_DAEMON)],
  606. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  607. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  608. AC_SUBST(LOGFACILITY)
  609. # Check for gethostbyname_r in all its glorious incompatible versions.
  610. # (This logic is based on that in Python's configure.in)
  611. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  612. [Define this if you have any gethostbyname_r()])
  613. AC_CHECK_FUNC(gethostbyname_r, [
  614. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  615. OLD_CFLAGS=$CFLAGS
  616. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  617. AC_TRY_COMPILE([
  618. #include <netdb.h>
  619. ], [
  620. char *cp1, *cp2;
  621. struct hostent *h1, *h2;
  622. int i1, i2;
  623. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  624. ], [
  625. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  626. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  627. [Define this if gethostbyname_r takes 6 arguments])
  628. AC_MSG_RESULT(6)
  629. ], [
  630. AC_TRY_COMPILE([
  631. #include <netdb.h>
  632. ], [
  633. char *cp1, *cp2;
  634. struct hostent *h1;
  635. int i1, i2;
  636. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  637. ], [
  638. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  639. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  640. [Define this if gethostbyname_r takes 5 arguments])
  641. AC_MSG_RESULT(5)
  642. ], [
  643. AC_TRY_COMPILE([
  644. #include <netdb.h>
  645. ], [
  646. char *cp1;
  647. struct hostent *h1;
  648. struct hostent_data hd;
  649. (void) gethostbyname_r(cp1,h1,&hd);
  650. ], [
  651. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  652. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  653. [Define this if gethostbyname_r takes 3 arguments])
  654. AC_MSG_RESULT(3)
  655. ], [
  656. AC_MSG_RESULT(0)
  657. ])
  658. ])
  659. ])
  660. CFLAGS=$OLD_CFLAGS
  661. ])
  662. AC_CACHE_CHECK([whether the C compiler supports __func__],
  663. ac_cv_have_func_macro,
  664. AC_COMPILE_IFELSE([
  665. #include <stdio.h>
  666. int main(int c, char **v) { puts(__func__); }],
  667. ac_cv_have_func_macro=yes,
  668. ac_cv_have_func_macro=no))
  669. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  670. ac_cv_have_FUNC_macro,
  671. AC_COMPILE_IFELSE([
  672. #include <stdio.h>
  673. int main(int c, char **v) { puts(__FUNC__); }],
  674. ac_cv_have_FUNC_macro=yes,
  675. ac_cv_have_FUNC_macro=no))
  676. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  677. ac_cv_have_FUNCTION_macro,
  678. AC_COMPILE_IFELSE([
  679. #include <stdio.h>
  680. int main(int c, char **v) { puts(__FUNCTION__); }],
  681. ac_cv_have_FUNCTION_macro=yes,
  682. ac_cv_have_FUNCTION_macro=no))
  683. if test $ac_cv_have_func_macro = 'yes'; then
  684. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  685. fi
  686. if test $ac_cv_have_FUNC_macro = 'yes'; then
  687. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  688. fi
  689. if test $ac_cv_have_FUNCTION_macro = 'yes'; then
  690. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  691. [Defined if the compiler supports __FUNCTION__])
  692. fi
  693. # $prefix stores the value of the --prefix command line option, or
  694. # NONE if the option wasn't set. In the case that it wasn't set, make
  695. # it be the default, so that we can use it to expand directories now.
  696. if test "x$prefix" = "xNONE"; then
  697. prefix=$ac_default_prefix
  698. fi
  699. # and similarly for $exec_prefix
  700. if test "x$exec_prefix" = "xNONE"; then
  701. exec_prefix=$prefix
  702. fi
  703. if test "x$CONFDIR" = "x"; then
  704. CONFDIR=`eval echo $sysconfdir/tor`
  705. fi
  706. AC_SUBST(CONFDIR)
  707. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  708. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  709. BINDIR=`eval echo $bindir`
  710. AC_SUBST(BINDIR)
  711. LOCALSTATEDIR=`eval echo $localstatedir`
  712. AC_SUBST(LOCALSTATEDIR)
  713. AH_TEMPLATE([LOCALSTATEDIR], [Default location to store state files.])
  714. AC_DEFINE_UNQUOTED(LOCALSTATEDIR,"$LOCALSTATEDIR")
  715. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  716. # than autoconf's macros like.
  717. if test $ac_cv_c_compiler_gnu = yes; then
  718. CFLAGS="$CFLAGS -Wall -g -O2"
  719. else
  720. CFLAGS="$CFLAGS -g -O"
  721. enable_gcc_warnings=no
  722. fi
  723. # Add some more warnings which we use in the cvs version but not in the
  724. # released versions. (Some relevant gcc versions can't handle these.)
  725. if test x$enable_gcc_warnings = xyes; then
  726. AC_TRY_COMPILE([], [
  727. #if !defined(__GNUC__) || (__GNUC__ < 4)
  728. #error
  729. #endif], have_gcc4=yes, have_gcc4=no)
  730. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2 -Wwrite-strings -Waggregate-return -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum -Werror"
  731. if test x$have_gcc4 = xyes ; then
  732. # These warnings break gcc 3.3.5 and work on gcc 4.0.2
  733. CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement -Wold-style-definition"
  734. fi
  735. ##This will break the world on some 64-bit architectures
  736. # CFLAGS="$CFLAGS -Winline"
  737. fi
  738. AC_OUTPUT(Makefile tor.spec contrib/tor.sh contrib/torctl contrib/torify contrib/tor.logrotate contrib/Makefile contrib/osx/Makefile contrib/osx/TorBundleDesc.plist contrib/osx/TorBundleInfo.plist contrib/osx/TorDesc.plist contrib/osx/TorInfo.plist contrib/osx/TorStartupDesc.plist src/config/torrc.sample doc/tor.1 src/Makefile doc/Makefile doc/design-paper/Makefile src/config/Makefile src/common/Makefile src/or/Makefile src/win32/Makefile src/tools/Makefile contrib/suse/Makefile contrib/suse/tor.sh)
  739. if test -x /usr/bin/perl && test -x ./contrib/updateVersions.pl ; then
  740. ./contrib/updateVersions.pl
  741. fi