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 echo "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, $wget_check_in_nsl)
228 AC_CHECK_LIB(socket, socket)
230 dnl #### This appears to be deficient with later versions of SOCKS.
231 if test "x${with_socks}" = xyes
233 AC_CHECK_LIB(resolv, main)
234 AC_CHECK_LIB(socks, Rconnect)
237 dnl $with_ssl can be one of:
238 dnl - empty string or "auto", meaning autodetect SSL and use it if found.
239 dnl - "yes", meaning link with SSL or bail out.
240 dnl - "no", meaning don't link with SSL.
241 dnl - anything else, meaning use that as the SSL root, and bail out
244 if test x"$with_ssl" = x; then
245 dnl Canonicalize unspecified with-ssl setting to "auto". This
246 dnl implements the "auto-detect by default" feature. If you want to
247 dnl change this to "ignore SSL by default", change "auto" to "no".
251 dnl Detection of OpenSSL is much hairier than the detection of other
252 dnl libraries because OpenSSL can be compiled as a third-party
253 dnl library, which means it will not be found without additional
254 dnl linker magic. It would be really nice to rework this check into
255 dnl an AC_DEFUN so that we can reuse it for other third-party
258 if test x"$with_ssl" != x"no"; then
261 if test x"$with_ssl" = x"yes"; then
265 if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
266 dnl OpenSSL's root was not specified, so we have to guess. First
267 dnl try the system default location, then "/usr/local/ssl" (where
268 dnl OpenSSL installs by default), then "/usr/local" (traditional
269 dnl choice for installation root), then "/opt".
270 ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
272 dnl Root has been specified by the user.
273 ssl_all_roots=$with_ssl
279 wget_save_LDFLAGS=$LDFLAGS
280 wget_save_CPPFLAGS=$CPPFLAGS
282 dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
283 dnl without having to know how the linker handles it.
284 CC="$SHELL ./libtool $CC"
286 dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
287 dnl shared library doesn't record its dependency on libdl, so we
288 dnl need to check for it ourselves so we won't fail to link due to a
289 dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
291 AC_CHECK_LIB(dl,dlopen)
292 AC_CHECK_LIB(dl,shl_load)
296 dnl Now try to find SSL libraries in each of the likely SSL roots.
297 for ssl_root in $ssl_all_roots
299 if test x"$ssl_root" = x"system-default"; then
300 dnl Try the default include and library locations.
303 dnl Try this specific root.
304 SSL_INCLUDES=-I$ssl_root/include
305 dnl It's OK to use -R directly because libtool will
306 dnl interpret it for us.
307 LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
310 AC_MSG_RESULT([Looking for SSL libraries in $ssl_root])
312 dnl Check whether the compiler can find the include files. On
313 dnl some systems Gcc finds libraries in /usr/local/lib, but fails
314 dnl to find the includes in /usr/local/include.
316 ssl_found_includes=no
317 CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
319 AC_MSG_CHECKING([for includes])
321 AC_TRY_CPP([#include <openssl/ssl.h>
322 #include <openssl/rsa.h>
324 AC_MSG_RESULT(found); ssl_found_includes=yes,
325 AC_MSG_RESULT([not found])
328 if test x"$ssl_found_includes" = xno; then
334 dnl Make sure that the checks don't run afoul of the cache. It
335 dnl would be nicer to temporarily turn off the cache, but
336 dnl apparently Autoconf doesn't allow that.
338 unset ac_cv_lib_crypto_RSA_new
339 unset ac_cv_lib_ssl_SSL_new
341 dnl These checks need to be in this order, or you'll get a link
342 dnl failure if you use a static libcrypto.a and libssl.a rather
343 dnl than shared libraries.
345 AC_CHECK_LIB(crypto, RSA_new, , ssl_link_failure=yes)
346 AC_CHECK_LIB(ssl, SSL_new, , ssl_link_failure=yes)
348 if test x"$ssl_link_failure" = xyes; then
349 dnl One or both libs failed to link.
353 dnl The libraries link. But we still need to check if the program
354 dnl linked with those libraries under these settings with run. On
355 dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
356 dnl linking line, but fails to add -R/usr/local/lib, thus creating
357 dnl executables that link, but fail to run.
359 dnl If we are cross-compiling, just assume that working linkage
360 dnl implies working executable.
364 AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
371 AC_MSG_RESULT(no); ssl_run_failure=yes,
375 if test x"$ssl_run_failure" = xno; then
381 if test x"$ssl_success" = xyes; then
382 dnl AC_MSG_RESULT doesn't look right here, but I'm not sure what
384 AC_MSG_RESULT([Compiling in support for SSL in $ssl_root])
386 AC_SUBST(SSL_INCLUDES)
387 SSL_OBJ='gen_sslfunc$o'
390 LDFLAGS=$wget_save_LDFLAGS
393 dnl If linking with SSL was forced rather than auto-detected, then
394 dnl bail out if SSL failed.
395 if test x"$wget_force_ssl" = x"yes"; then
397 echo "ERROR: Failed to find OpenSSL libraries."
402 dnl Restore the compiler setting.
405 dnl Restore the CPPFLAGS. Do this regardless of whether linking
406 dnl with SSL succeeded -- SSL includes will be handled using
408 CPPFLAGS=$wget_save_CPPFLAGS
412 dnl Find an md5 implementation.
415 if test x"$wget_need_md5" = xyes
421 dnl Check for the system MD5 library on Solaris. We don't check for
422 dnl something simple like "MD5Update" because there are a number of
423 dnl MD5 implementations that use that name. md5_calc is, hopefully,
424 dnl specific to the Solaris MD5 library.
425 if test x"$found_md5" = xno; then
426 AC_CHECK_LIB(md5, md5_calc, [
427 AC_DEFINE(HAVE_SOLARIS_MD5)
433 dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
435 if test x"$found_md5" = xno; then
436 if test x"$ssl_success" = xyes; then
437 AC_DEFINE(HAVE_OPENSSL_MD5)
442 dnl If none of the above worked, use the one we ship with Wget.
443 if test x"$found_md5" = xno; then
444 AC_DEFINE(HAVE_BUILTIN_MD5)
446 MD5_OBJ="$MD5_OBJ gnu-md5\$o"
452 dnl **********************************************************************
454 dnl **********************************************************************
457 dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
458 dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
459 dnl don't use IPv6 or getaddrinfo.
465 AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
466 [case "${enable_ipv6}" in
468 AC_MSG_NOTICE([Disabling IPv6 at user request])
475 dnl If unspecified, check for IPv6 and use it where available.
479 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
480 AC_CHECK_FUNCS(getaddrinfo,[
481 GETADDRINFO_AI_ADDRCONFIG(
483 [HAVE_GETADDRINFO_AI_ADDRCONFIG], 1,
484 [Define if the system headers support the AI_ADDRCONFIG flag.]
487 GETADDRINFO_AI_V4MAPPED(
489 [HAVE_GETADDRINFO_AI_V4MAPPED], 1,
490 [Define if the system headers support the AI_V4MAPPED flag.]
495 [HAVE_GETADDRINFO_AI_ALL], 1,
496 [Define if the system headers support the AI_ALL flag.]
500 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support getaddrinfo(3)])
505 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
507 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support the PF_INET6 protocol family])
512 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
513 TYPE_STRUCT_SOCKADDR_IN6([
516 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support 'struct sockaddr_in6'])
519 if test "X$ipv6" = "Xyes"; then
524 if test "X$ipv6" = "Xyes"; then
525 AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
530 dnl Set of available languages.
532 ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
534 dnl Originally this used to be static, looking like this:
535 dnl ALL_LINGUAS="cs de hr it ..."
536 dnl The downside was that configure needed to be rebuilt whenever a
537 dnl new language was added.
539 dnl internationalization macros
543 dnl Find makeinfo. If makeinfo is not found, look for Emacs. If
544 dnl Emacs cannot be found, look for XEmacs.
547 AC_CHECK_PROGS(MAKEINFO, makeinfo emacs xemacs)
549 case "${MAKEINFO}" in
550 *makeinfo) MAKEINFO="${MAKEINFO} \$(srcdir)/wget.texi" ;;
551 *emacs | *xemacs) MAKEINFO="${MAKEINFO} -batch -q -no-site-file -eval '(find-file \"\$(srcdir)/wget.texi\")' -l texinfmt -f texinfo-format-buffer -f save-buffer" ;;
552 *) MAKEINFO="makeinfo \$(srcdir)/wget.texi" ;;
556 dnl Find perl and pod2man
559 AC_PATH_PROGS(PERL, perl5 perl, no)
560 AC_PATH_PROG(POD2MAN, pod2man, no)
562 if test "x${POD2MAN}" = xno; then
563 COMMENT_IF_NO_POD2MAN="# "
565 COMMENT_IF_NO_POD2MAN=
567 AC_SUBST(COMMENT_IF_NO_POD2MAN)
572 AC_OUTPUT([Makefile src/Makefile doc/Makefile util/Makefile po/Makefile.in
575 test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h])