1 dnl Template file for GNU Autoconf
2 dnl Copyright (C) 1995, 1996, 1997, 2001 Free Software Foundation, Inc.
4 dnl This program is free software; you can redistribute it and/or modify
5 dnl it under the terms of the GNU General Public License as published by
6 dnl the Free Software Foundation; either version 2 of the License, or
7 dnl (at your option) any later version.
9 dnl This program is distributed in the hope that it will be useful,
10 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
11 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 dnl GNU General Public License for more details.
14 dnl You should have received a copy of the GNU General Public License
15 dnl along with this program; if not, write to the Free Software
16 dnl Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 dnl In addition, as a special exception, the Free Software Foundation
19 dnl gives permission to link the code of its release of Wget with the
20 dnl OpenSSL project's "OpenSSL" library (or with modified versions of it
21 dnl that use the same license as the "OpenSSL" library), and distribute
22 dnl the linked executables. You must obey the GNU General Public License
23 dnl in all respects for all of the code used other than "OpenSSL". If you
24 dnl modify this file, you may extend this exception to your version of the
25 dnl file, but you are not obligated to do so. If you do not wish to do
26 dnl so, delete this exception statement from your version.
29 dnl Process this file with autoconf to produce a configure script.
32 AC_INIT(src/version.c)
34 AC_CONFIG_HEADER(src/config.h)
37 dnl What version of Wget are we building?
39 VERSION=`sed -e 's/^.*"\(.*\)";$/\1/' ${srcdir}/src/version.c`
40 AC_MSG_NOTICE([configuring for GNU Wget $VERSION])
46 dnl Get cannonical host
49 AC_DEFINE_UNQUOTED(OS_TYPE, "$host_os")
55 [ --with-socks use the socks library],
56 [AC_DEFINE(HAVE_SOCKS)])
59 [[ --with-ssl[=SSL-ROOT] link with SSL support [default=auto]
60 --without-ssl disable SSL autodetection]])
63 [ --disable-opie disable support for opie or s/key FTP login],
64 USE_OPIE=$enableval, USE_OPIE=yes)
65 test x"${USE_OPIE}" = xyes && AC_DEFINE(USE_OPIE)
68 [ --disable-digest disable support for HTTP digest authorization],
69 USE_DIGEST=$enableval, USE_DIGEST=yes)
70 test x"${USE_DIGEST}" = xyes && AC_DEFINE(USE_DIGEST)
73 [ --disable-debug disable support for debugging output],
74 ENABLE_DEBUG=$enableval, ENABLE_DEBUG=yes)
75 test x"${ENABLE_DEBUG}" = xyes && AC_DEFINE(ENABLE_DEBUG)
79 case "${USE_OPIE}${USE_DIGEST}" in
83 if test x"$USE_OPIE" = xyes; then
89 dnl Whether make sets $(MAKE)...
94 dnl Find a good install
102 dnl We want these before the checks, so the checks can modify their values.
103 test -z "$CFLAGS" && CFLAGS= auto_cflags=1
104 test -z "$CC" && cc_specified=yes
109 dnl if the user hasn't specified CFLAGS, then
110 dnl if compiler is gcc, then use -O2 and some warning flags
111 dnl else use os-specific flags or -O
113 if test -n "$auto_cflags"; then
114 if test -n "$GCC"; then
115 CFLAGS="$CFLAGS -O2 -Wall -Wno-implicit"
118 *hpux*) CFLAGS="$CFLAGS +O3" ;;
119 *ultrix* | *osf*) CFLAGS="$CFLAGS -O -Olimit 2000" ;;
120 *) CFLAGS="$CFLAGS -O" ;;
131 dnl Configure our included libtool and make sure it's regenerated when needed
134 AC_SUBST(LIBTOOL_DEPS)
137 dnl In case of {cyg,gnu}win32. Should be a _target_ test.
138 dnl Might also be erelevant for DJGPP.
141 *win32) exeext='.exe';;
147 dnl Check if we can handle prototypes.
152 dnl Checks for typedefs, structures, and compiler characteristics.
161 dnl Check integral type sizes.
163 AC_CHECK_SIZEOF(short)
165 AC_CHECK_SIZEOF(long)
166 AC_CHECK_SIZEOF(long long)
167 AC_CHECK_HEADERS(inttypes.h)
168 AC_CHECK_TYPES(uint32_t)
171 dnl Checks for headers
173 AC_CHECK_HEADERS(string.h stdarg.h unistd.h sys/time.h utime.h sys/utime.h pwd.h)
174 AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h sys/utsname.h)
175 AC_CHECK_HEADERS(signal.h setjmp.h)
179 dnl Return type of signal-handlers
184 dnl Call several of Wget's macros.
190 dnl Checks for library functions.
194 AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
195 AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
196 AC_CHECK_FUNCS(select sigblock sigsetjmp signal symlink access isatty)
197 AC_CHECK_FUNCS(uname gethostname usleep)
200 dnl Check if we need to compile in getopt.c.
202 AC_CHECK_FUNC(getopt_long, [], [
203 GETOPT_OBJ='getopt$o'
208 dnl Checks for libraries.
211 dnl On Solaris, -lnsl is needed to use gethostbyname. On "NCR MP-RAS
212 dnl 3.0", however, gethostbyname is in libc, but -lnsl is still needed
213 dnl to use -lsocket, as well as for functions such as inet_ntoa. We
214 dnl look for such known offenders and if one of them is not found, we
215 dnl check if -lnsl is needed.
217 wget_check_in_nsl=NONE
218 AC_CHECK_FUNCS(gethostbyname, [], [
219 wget_check_in_nsl=gethostbyname
221 AC_CHECK_FUNCS(inet_ntoa, [], [
222 wget_check_in_nsl=inet_ntoa
224 if test $wget_check_in_nsl != NONE; then
225 AC_CHECK_LIB(nsl, $wget_check_in_nsl)
228 AC_CHECK_LIB(socket, socket)
230 dnl nanosleep on Solaris requires -lrt (more recently) or -lposix4
231 dnl (older versions).
233 AC_CHECK_FUNCS(nanosleep, [], [
234 AC_CHECK_LIB(rt, nanosleep, [
235 AC_DEFINE(HAVE_NANOSLEEP)
238 AC_CHECK_LIB(posix4, nanosleep, [
239 AC_DEFINE(HAVE_NANOSLEEP)
240 LIBS="-lposix4 $LIBS"
244 dnl #### This appears to be deficient with later versions of SOCKS.
245 if test "x${with_socks}" = xyes
247 AC_CHECK_LIB(resolv, main)
248 AC_CHECK_LIB(socks, Rconnect)
251 dnl $with_ssl can be one of:
252 dnl - empty string or "auto", meaning autodetect SSL and use it if found.
253 dnl - "yes", meaning link with SSL or bail out.
254 dnl - "no", meaning don't link with SSL.
255 dnl - anything else, meaning use that as the SSL root, and bail out
258 if test x"$with_ssl" = x; then
259 dnl Canonicalize unspecified with-ssl setting to "auto". This
260 dnl implements the "auto-detect by default" feature. If you want to
261 dnl change this to "ignore SSL by default", change "auto" to "no".
265 dnl Detection of OpenSSL is much hairier than the detection of other
266 dnl libraries because OpenSSL can be compiled as a third-party
267 dnl library, which means it will not be found without additional
268 dnl linker magic. It would be really nice to rework this check into
269 dnl an AC_DEFUN so that we can reuse it for other third-party
272 if test x"$with_ssl" != x"no"; then
275 if test x"$with_ssl" = x"yes"; then
279 if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
280 dnl OpenSSL's root was not specified, so we have to guess. First
281 dnl try the system default location, then "/usr/local/ssl" (where
282 dnl OpenSSL installs by default), then "/usr/local" (traditional
283 dnl choice for installation root), then "/opt".
284 ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
286 dnl Root has been specified by the user.
287 ssl_all_roots=$with_ssl
293 wget_save_LDFLAGS=$LDFLAGS
294 wget_save_CPPFLAGS=$CPPFLAGS
296 dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
297 dnl without having to know how the linker handles it.
298 CC="$SHELL ./libtool $CC"
300 dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
301 dnl shared library doesn't record its dependency on libdl, so we
302 dnl need to check for it ourselves so we won't fail to link due to a
303 dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
305 AC_CHECK_LIB(dl,dlopen)
306 AC_CHECK_LIB(dl,shl_load)
310 dnl Now try to find SSL libraries in each of the likely SSL roots.
311 for ssl_root in $ssl_all_roots
313 if test x"$ssl_root" = x"system-default"; then
314 dnl Try the default include and library locations.
317 dnl Try this specific root.
318 SSL_INCLUDES=-I$ssl_root/include
319 dnl It's OK to use -R directly because libtool will
320 dnl interpret it for us.
321 LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
324 AC_MSG_RESULT([Looking for SSL libraries in $ssl_root])
326 dnl Check whether the compiler can find the include files. On
327 dnl some systems Gcc finds libraries in /usr/local/lib, but fails
328 dnl to find the includes in /usr/local/include.
330 ssl_found_includes=no
331 CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
333 AC_MSG_CHECKING([for includes])
335 AC_TRY_CPP([#include <openssl/ssl.h>
336 #include <openssl/rsa.h>
338 AC_MSG_RESULT(found); ssl_found_includes=yes,
339 AC_MSG_RESULT([not found])
342 if test x"$ssl_found_includes" = xno; then
348 dnl Make sure that the checks don't run afoul of the cache. It
349 dnl would be nicer to temporarily turn off the cache, but
350 dnl apparently Autoconf doesn't allow that.
352 unset ac_cv_lib_crypto_RSA_new
353 unset ac_cv_lib_ssl_SSL_new
355 dnl These checks need to be in this order, or you'll get a link
356 dnl failure if you use a static libcrypto.a and libssl.a rather
357 dnl than shared libraries.
359 AC_CHECK_LIB(crypto, RSA_new, , ssl_link_failure=yes)
360 AC_CHECK_LIB(ssl, SSL_new, , ssl_link_failure=yes)
362 if test x"$ssl_link_failure" = xyes; then
363 dnl One or both libs failed to link.
367 dnl The libraries link. But we still need to check if the program
368 dnl linked with those libraries under these settings with run. On
369 dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
370 dnl linking line, but fails to add -R/usr/local/lib, thus creating
371 dnl executables that link, but fail to run.
373 dnl If we are cross-compiling, just assume that working linkage
374 dnl implies working executable.
378 AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
385 AC_MSG_RESULT(no); ssl_run_failure=yes,
389 if test x"$ssl_run_failure" = xno; then
395 if test x"$ssl_success" = xyes; then
396 dnl AC_MSG_RESULT doesn't look right here, but I'm not sure what
398 AC_MSG_RESULT([Compiling in support for SSL in $ssl_root])
400 AC_SUBST(SSL_INCLUDES)
401 SSL_OBJ='gen_sslfunc$o'
404 LDFLAGS=$wget_save_LDFLAGS
407 dnl If linking with SSL was forced rather than auto-detected, then
408 dnl bail out if SSL failed.
409 if test x"$wget_force_ssl" = x"yes"; then
410 AC_MSG_ERROR([failed to find OpenSSL libraries], 2)
414 dnl Restore the compiler setting.
417 dnl Restore the CPPFLAGS. Do this regardless of whether linking
418 dnl with SSL succeeded -- SSL includes will be handled using
420 CPPFLAGS=$wget_save_CPPFLAGS
424 dnl Find an md5 implementation.
427 if test x"$wget_need_md5" = xyes
433 dnl Check for the system MD5 library on Solaris. We don't check for
434 dnl something simple like "MD5Update" because there are a number of
435 dnl MD5 implementations that use that name. md5_calc is, hopefully,
436 dnl specific to the Solaris MD5 library.
437 if test x"$found_md5" = xno; then
438 AC_CHECK_LIB(md5, md5_calc, [
439 dnl There are programs that insert bogus <md5.h> in the include
440 dnl path. That makes the system md5 library is useless to us.
441 AC_CHECK_HEADERS([md5.h], [
442 AC_DEFINE(HAVE_SOLARIS_MD5)
445 AC_MSG_NOTICE([using Solaris MD5 implementation])
450 dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
452 if test x"$found_md5" = xno; then
453 if test x"$ssl_success" = xyes; then
454 AC_DEFINE(HAVE_OPENSSL_MD5)
456 AC_MSG_NOTICE([using OpenSSL MD5 implementation])
460 dnl If none of the above worked, use the one we ship with Wget.
461 if test x"$found_md5" = xno; then
462 AC_DEFINE(HAVE_BUILTIN_MD5)
463 MD5_OBJ="$MD5_OBJ gnu-md5\$o"
465 AC_MSG_NOTICE([using GNU MD5 implementation])
471 dnl **********************************************************************
473 dnl **********************************************************************
476 dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
477 dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
478 dnl don't use IPv6 or getaddrinfo.
484 AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
485 [case "${enable_ipv6}" in
487 AC_MSG_NOTICE([Disabling IPv6 at user request])
494 dnl If unspecified, check for IPv6 and use it where available.
498 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
499 AC_CHECK_FUNCS(getaddrinfo,[
500 GETADDRINFO_AI_ADDRCONFIG(
502 [HAVE_GETADDRINFO_AI_ADDRCONFIG], 1,
503 [Define if the system headers support the AI_ADDRCONFIG flag.]
506 GETADDRINFO_AI_V4MAPPED(
508 [HAVE_GETADDRINFO_AI_V4MAPPED], 1,
509 [Define if the system headers support the AI_V4MAPPED flag.]
514 [HAVE_GETADDRINFO_AI_ALL], 1,
515 [Define if the system headers support the AI_ALL flag.]
519 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support getaddrinfo(3)])
524 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
526 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support the PF_INET6 protocol family])
531 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
532 TYPE_STRUCT_SOCKADDR_IN6([
535 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support 'struct sockaddr_in6'])
538 if test "X$ipv6" = "Xyes"; then
543 if test "X$ipv6" = "Xyes"; then
544 AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
549 dnl Set of available languages.
551 ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
553 dnl Originally this used to be static, looking like this:
554 dnl ALL_LINGUAS="cs de hr it ..."
555 dnl The downside was that configure needed to be rebuilt whenever a
556 dnl new language was added.
558 dnl internationalization macros
562 dnl Find makeinfo. If makeinfo is not found, look for Emacs. If
563 dnl Emacs cannot be found, look for XEmacs.
566 AC_CHECK_PROGS(MAKEINFO, makeinfo emacs xemacs)
568 case "${MAKEINFO}" in
569 *makeinfo) MAKEINFO="${MAKEINFO} \$(srcdir)/wget.texi" ;;
570 *emacs | *xemacs) MAKEINFO="${MAKEINFO} -batch -q -no-site-file -eval '(find-file \"\$(srcdir)/wget.texi\")' -l texinfmt -f texinfo-format-buffer -f save-buffer" ;;
571 *) MAKEINFO="makeinfo \$(srcdir)/wget.texi" ;;
575 dnl Find perl and pod2man
578 AC_PATH_PROGS(PERL, perl5 perl, no)
579 AC_PATH_PROG(POD2MAN, pod2man, no)
581 if test "x${POD2MAN}" = xno; then
582 COMMENT_IF_NO_POD2MAN="# "
584 COMMENT_IF_NO_POD2MAN=
586 AC_SUBST(COMMENT_IF_NO_POD2MAN)
591 AC_OUTPUT([Makefile src/Makefile doc/Makefile util/Makefile po/Makefile.in
594 test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h])