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="$CFLAGS -O" ;;
131 dnl Configure our included libtool and make sure it's regenerated when needed
134 AC_SUBST(LIBTOOL_DEPS)
137 dnl In case of {cyg,gnu}win32. Should be a _target_ test.
138 dnl Might also be erelevant for DJGPP.
141 *win32) exeext='.exe';;
147 dnl Check if we can handle prototypes.
152 dnl Checks for typedefs, structures, and compiler characteristics.
161 dnl Check integral type sizes.
163 AC_CHECK_SIZEOF(short)
165 AC_CHECK_SIZEOF(long)
166 AC_CHECK_SIZEOF(long long)
167 AC_CHECK_HEADERS(inttypes.h)
168 AC_CHECK_TYPES(uint32_t)
171 dnl Checks for headers
173 AC_CHECK_HEADERS(string.h stdarg.h unistd.h sys/time.h utime.h sys/utime.h pwd.h)
174 AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h sys/utsname.h)
175 AC_CHECK_HEADERS(signal.h setjmp.h)
179 dnl Return type of signal-handlers
184 dnl Call several of Wget's macros.
190 dnl Checks for library functions.
194 AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
195 AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
196 AC_CHECK_FUNCS(select sigblock sigsetjmp signal symlink access isatty)
197 AC_CHECK_FUNCS(uname gethostname usleep)
198 AC_CHECK_FUNCS(nanosleep,,[
199 AC_CHECK_LIB(rt,nanosleep,[AC_DEFINE(HAVE_NANOSLEEP)],[
200 AC_CHECK_LIB(posix4,nanosleep,[AC_DEFINE(HAVE_NANOSLEEP)])])])
203 dnl Check if we need to compile in getopt.c.
205 AC_CHECK_FUNC(getopt_long, [], [
206 GETOPT_OBJ='getopt$o'
211 dnl Checks for libraries.
214 dnl On Solaris, -lnsl is needed to use gethostbyname. On "NCR MP-RAS
215 dnl 3.0", however, gethostbyname is in libc, but -lnsl is still needed
216 dnl to use -lsocket, as well as for functions such as inet_ntoa. We
217 dnl look for such known offenders and if one of them is not found, we
218 dnl check if -lnsl is needed.
220 wget_check_in_nsl=NONE
221 AC_CHECK_FUNCS(gethostbyname, [], [
222 wget_check_in_nsl=gethostbyname
224 AC_CHECK_FUNCS(inet_ntoa, [], [
225 wget_check_in_nsl=inet_ntoa
227 if test $wget_check_in_nsl != NONE; then
228 AC_CHECK_LIB(nsl, $wget_check_in_nsl)
231 AC_CHECK_LIB(socket, socket)
233 dnl #### This appears to be deficient with later versions of SOCKS.
234 if test "x${with_socks}" = xyes
236 AC_CHECK_LIB(resolv, main)
237 AC_CHECK_LIB(socks, Rconnect)
240 dnl $with_ssl can be one of:
241 dnl - empty string or "auto", meaning autodetect SSL and use it if found.
242 dnl - "yes", meaning link with SSL or bail out.
243 dnl - "no", meaning don't link with SSL.
244 dnl - anything else, meaning use that as the SSL root, and bail out
247 if test x"$with_ssl" = x; then
248 dnl Canonicalize unspecified with-ssl setting to "auto". This
249 dnl implements the "auto-detect by default" feature. If you want to
250 dnl change this to "ignore SSL by default", change "auto" to "no".
254 dnl Detection of OpenSSL is much hairier than the detection of other
255 dnl libraries because OpenSSL can be compiled as a third-party
256 dnl library, which means it will not be found without additional
257 dnl linker magic. It would be really nice to rework this check into
258 dnl an AC_DEFUN so that we can reuse it for other third-party
261 if test x"$with_ssl" != x"no"; then
264 if test x"$with_ssl" = x"yes"; then
268 if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
269 dnl OpenSSL's root was not specified, so we have to guess. First
270 dnl try the system default location, then "/usr/local/ssl" (where
271 dnl OpenSSL installs by default), then "/usr/local" (traditional
272 dnl choice for installation root), then "/opt".
273 ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
275 dnl Root has been specified by the user.
276 ssl_all_roots=$with_ssl
282 wget_save_LDFLAGS=$LDFLAGS
283 wget_save_CPPFLAGS=$CPPFLAGS
285 dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
286 dnl without having to know how the linker handles it.
287 CC="$SHELL ./libtool $CC"
289 dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
290 dnl shared library doesn't record its dependency on libdl, so we
291 dnl need to check for it ourselves so we won't fail to link due to a
292 dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
294 AC_CHECK_LIB(dl,dlopen)
295 AC_CHECK_LIB(dl,shl_load)
299 dnl Now try to find SSL libraries in each of the likely SSL roots.
300 for ssl_root in $ssl_all_roots
302 if test x"$ssl_root" = x"system-default"; then
303 dnl Try the default include and library locations.
306 dnl Try this specific root.
307 SSL_INCLUDES=-I$ssl_root/include
308 dnl It's OK to use -R directly because libtool will
309 dnl interpret it for us.
310 LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
313 AC_MSG_RESULT([Looking for SSL libraries in $ssl_root])
315 dnl Check whether the compiler can find the include files. On
316 dnl some systems Gcc finds libraries in /usr/local/lib, but fails
317 dnl to find the includes in /usr/local/include.
319 ssl_found_includes=no
320 CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
322 AC_MSG_CHECKING([for includes])
324 AC_TRY_CPP([#include <openssl/ssl.h>
325 #include <openssl/rsa.h>
327 AC_MSG_RESULT(found); ssl_found_includes=yes,
328 AC_MSG_RESULT([not found])
331 if test x"$ssl_found_includes" = xno; then
337 dnl Make sure that the checks don't run afoul of the cache. It
338 dnl would be nicer to temporarily turn off the cache, but
339 dnl apparently Autoconf doesn't allow that.
341 unset ac_cv_lib_crypto_RSA_new
342 unset ac_cv_lib_ssl_SSL_new
344 dnl These checks need to be in this order, or you'll get a link
345 dnl failure if you use a static libcrypto.a and libssl.a rather
346 dnl than shared libraries.
348 AC_CHECK_LIB(crypto, RSA_new, , ssl_link_failure=yes)
349 AC_CHECK_LIB(ssl, SSL_new, , ssl_link_failure=yes)
351 if test x"$ssl_link_failure" = xyes; then
352 dnl One or both libs failed to link.
356 dnl The libraries link. But we still need to check if the program
357 dnl linked with those libraries under these settings with run. On
358 dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
359 dnl linking line, but fails to add -R/usr/local/lib, thus creating
360 dnl executables that link, but fail to run.
362 dnl If we are cross-compiling, just assume that working linkage
363 dnl implies working executable.
367 AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
374 AC_MSG_RESULT(no); ssl_run_failure=yes,
378 if test x"$ssl_run_failure" = xno; then
384 if test x"$ssl_success" = xyes; then
385 dnl AC_MSG_RESULT doesn't look right here, but I'm not sure what
387 AC_MSG_RESULT([Compiling in support for SSL in $ssl_root])
389 AC_SUBST(SSL_INCLUDES)
390 SSL_OBJ='gen_sslfunc$o'
393 LDFLAGS=$wget_save_LDFLAGS
396 dnl If linking with SSL was forced rather than auto-detected, then
397 dnl bail out if SSL failed.
398 if test x"$wget_force_ssl" = x"yes"; then
400 echo "ERROR: Failed to find OpenSSL libraries."
405 dnl Restore the compiler setting.
408 dnl Restore the CPPFLAGS. Do this regardless of whether linking
409 dnl with SSL succeeded -- SSL includes will be handled using
411 CPPFLAGS=$wget_save_CPPFLAGS
415 dnl Find an md5 implementation.
418 if test x"$wget_need_md5" = xyes
424 dnl Check for the system MD5 library on Solaris. We don't check for
425 dnl something simple like "MD5Update" because there are a number of
426 dnl MD5 implementations that use that name. md5_calc is, hopefully,
427 dnl specific to the Solaris MD5 library.
428 if test x"$found_md5" = xno; then
429 AC_CHECK_LIB(md5, md5_calc, [
430 AC_DEFINE(HAVE_SOLARIS_MD5)
436 dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
438 if test x"$found_md5" = xno; then
439 if test x"$ssl_success" = xyes; then
440 AC_DEFINE(HAVE_OPENSSL_MD5)
445 dnl If none of the above worked, use the one we ship with Wget.
446 if test x"$found_md5" = xno; then
447 AC_DEFINE(HAVE_BUILTIN_MD5)
449 MD5_OBJ="$MD5_OBJ gnu-md5\$o"
455 dnl **********************************************************************
457 dnl **********************************************************************
460 dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
461 dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
462 dnl don't use IPv6 or getaddrinfo.
468 AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
469 [case "${enable_ipv6}" in
471 AC_MSG_NOTICE([Disabling IPv6 at user request])
478 dnl If unspecified, check for IPv6 and use it where available.
482 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
483 AC_CHECK_FUNCS(getaddrinfo,[
484 GETADDRINFO_AI_ADDRCONFIG(
486 [HAVE_GETADDRINFO_AI_ADDRCONFIG], 1,
487 [Define if the system headers support the AI_ADDRCONFIG flag.]
490 GETADDRINFO_AI_V4MAPPED(
492 [HAVE_GETADDRINFO_AI_V4MAPPED], 1,
493 [Define if the system headers support the AI_V4MAPPED flag.]
498 [HAVE_GETADDRINFO_AI_ALL], 1,
499 [Define if the system headers support the AI_ALL flag.]
503 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support getaddrinfo(3)])
508 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
510 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support the PF_INET6 protocol family])
515 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
516 TYPE_STRUCT_SOCKADDR_IN6([
519 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support 'struct sockaddr_in6'])
522 if test "X$ipv6" = "Xyes"; then
527 if test "X$ipv6" = "Xyes"; then
528 AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
533 dnl Set of available languages.
535 ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
537 dnl Originally this used to be static, looking like this:
538 dnl ALL_LINGUAS="cs de hr it ..."
539 dnl The downside was that configure needed to be rebuilt whenever a
540 dnl new language was added.
542 dnl internationalization macros
546 dnl Find makeinfo. If makeinfo is not found, look for Emacs. If
547 dnl Emacs cannot be found, look for XEmacs.
550 AC_CHECK_PROGS(MAKEINFO, makeinfo emacs xemacs)
552 case "${MAKEINFO}" in
553 *makeinfo) MAKEINFO="${MAKEINFO} \$(srcdir)/wget.texi" ;;
554 *emacs | *xemacs) MAKEINFO="${MAKEINFO} -batch -q -no-site-file -eval '(find-file \"\$(srcdir)/wget.texi\")' -l texinfmt -f texinfo-format-buffer -f save-buffer" ;;
555 *) MAKEINFO="makeinfo \$(srcdir)/wget.texi" ;;
559 dnl Find perl and pod2man
562 AC_PATH_PROGS(PERL, perl5 perl, no)
563 AC_PATH_PROG(POD2MAN, pod2man, no)
565 if test "x${POD2MAN}" = xno; then
566 COMMENT_IF_NO_POD2MAN="# "
568 COMMENT_IF_NO_POD2MAN=
570 AC_SUBST(COMMENT_IF_NO_POD2MAN)
575 AC_OUTPUT([Makefile src/Makefile doc/Makefile util/Makefile po/Makefile.in
578 test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h])