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 DEBUG=$enableval, DEBUG=yes)
75 test x"${DEBUG}" = xyes && AC_DEFINE(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="$CFLAGS -O" ;;
131 dnl Configure our included libtool and make sure it's regenerated when needed
134 AC_SUBST(LIBTOOL_DEPS)
137 dnl In case of {cyg,gnu}win32. Should be a _target_ test.
138 dnl Might also be erelevant for DJGPP.
141 *win32) exeext='.exe';;
147 dnl Check if we can handle prototypes.
152 dnl Checks for typedefs, structures, and compiler characteristics.
160 # Check size of long.
161 AC_CHECK_SIZEOF(long)
162 AC_CHECK_SIZEOF(long long)
165 dnl Checks for headers
167 AC_CHECK_HEADERS(string.h stdarg.h unistd.h sys/time.h utime.h sys/utime.h pwd.h)
168 AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h sys/utsname.h)
169 AC_CHECK_HEADERS(signal.h setjmp.h)
173 dnl Return type of signal-handlers
178 dnl Check for struct utimbuf
182 dnl Checks for library functions.
186 AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
187 AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
188 AC_CHECK_FUNCS(select sigblock sigsetjmp signal symlink access isatty)
189 AC_CHECK_FUNCS(uname gethostname usleep)
192 dnl Check if we need to compile in getopt.c.
194 AC_CHECK_FUNC(getopt_long, [], [
195 GETOPT_OBJ='getopt$o'
200 dnl Checks for libraries.
203 dnl On Solaris, -lnsl is needed to use gethostbyname. On "NCR MP-RAS
204 dnl 3.0", however, gethostbyname is in libc, but -lnsl is still needed
205 dnl to use -lsocket, as well as for functions such as inet_ntoa. We
206 dnl look for such known offenders and if one of them is not found, we
207 dnl check if -lnsl is needed.
209 wget_check_in_nsl=NONE
210 AC_CHECK_FUNCS(gethostbyname, [], [
211 wget_check_in_nsl=gethostbyname
213 AC_CHECK_FUNCS(inet_ntoa, [], [
214 wget_check_in_nsl=inet_ntoa
216 if test $wget_check_in_nsl != NONE; then
217 AC_CHECK_LIB(nsl, $wget_check_in_nsl)
220 AC_CHECK_LIB(socket, socket)
222 dnl #### This appears to be deficient with later versions of SOCKS.
223 if test "x${with_socks}" = xyes
225 AC_CHECK_LIB(resolv, main)
226 AC_CHECK_LIB(socks, Rconnect)
229 dnl $with_ssl can be one of:
230 dnl - empty string or "auto", meaning autodetect SSL and use it if found.
231 dnl - "yes", meaning link with SSL or bail out.
232 dnl - "no", meaning don't link with SSL.
233 dnl - anything else, meaning use that as the SSL root, and bail out
236 if test x"$with_ssl" = x; then
237 dnl Canonicalize unspecified with-ssl setting to "auto". This
238 dnl implements the "auto-detect by default" feature. If you want to
239 dnl change this to "ignore SSL by default", change "auto" to "no".
243 dnl Detection of OpenSSL is much hairier than the detection of other
244 dnl libraries because OpenSSL can be compiled as a third-party
245 dnl library, which means it will not be found without additional
246 dnl linker magic. It would be really nice to rework this check into
247 dnl an AC_DEFUN so that we can reuse it for other third-party
250 if test x"$with_ssl" != x"no"; then
253 if test x"$with_ssl" = x"yes"; then
257 if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
258 dnl OpenSSL's root was not specified, so we have to guess. First
259 dnl try the system default location, then "/usr/local/ssl" (where
260 dnl OpenSSL installs by default), then "/usr/local" (traditional
261 dnl choice for installation root), then "/opt".
262 ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
264 dnl Root has been specified by the user.
265 ssl_all_roots=$with_ssl
271 wget_save_LDFLAGS=$LDFLAGS
272 wget_save_CPPFLAGS=$CPPFLAGS
274 dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
275 dnl without having to know how the linker handles it.
276 CC="$SHELL ./libtool $CC"
278 dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
279 dnl shared library doesn't record its dependency on libdl, so we
280 dnl need to check for it ourselves so we won't fail to link due to a
281 dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
283 AC_CHECK_LIB(dl,dlopen)
284 AC_CHECK_LIB(dl,shl_load)
288 dnl Now try to find SSL libraries in each of the likely SSL roots.
289 for ssl_root in $ssl_all_roots
291 if test x"$ssl_root" = x"system-default"; then
292 dnl Try the default include and library locations.
295 dnl Try this specific root.
296 SSL_INCLUDES=-I$ssl_root/include
297 dnl It's OK to use -R directly because libtool will
298 dnl interpret it for us.
299 LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
302 AC_MSG_RESULT([Looking for SSL libraries in $ssl_root])
304 dnl Check whether the compiler can find the include files. On
305 dnl some systems Gcc finds libraries in /usr/local/lib, but fails
306 dnl to find the includes in /usr/local/include.
308 ssl_found_includes=no
309 CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
311 AC_MSG_CHECKING([for includes])
313 AC_TRY_CPP([#include <openssl/ssl.h>
314 #include <openssl/rsa.h>
316 AC_MSG_RESULT(found); ssl_found_includes=yes,
317 AC_MSG_RESULT([not found])
320 if test x"$ssl_found_includes" = xno; then
326 dnl Make sure that the checks don't run afoul of the cache. It
327 dnl would be nicer to temporarily turn off the cache, but
328 dnl apparently Autoconf doesn't allow that.
330 unset ac_cv_lib_crypto_RSA_new
331 unset ac_cv_lib_ssl_SSL_new
333 dnl These checks need to be in this order, or you'll get a link
334 dnl failure if you use a static libcrypto.a and libssl.a rather
335 dnl than shared libraries.
337 AC_CHECK_LIB(crypto, RSA_new, , ssl_link_failure=yes)
338 AC_CHECK_LIB(ssl, SSL_new, , ssl_link_failure=yes)
340 if test x"$ssl_link_failure" = xyes; then
341 dnl One or both libs failed to link.
345 dnl The libraries link. But we still need to check if the program
346 dnl linked with those libraries under these settings with run. On
347 dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
348 dnl linking line, but fails to add -R/usr/local/lib, thus creating
349 dnl executables that link, but fail to run.
351 dnl If we are cross-compiling, just assume that working linkage
352 dnl implies working executable.
356 AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
363 AC_MSG_RESULT(no); ssl_run_failure=yes,
367 if test x"$ssl_run_failure" = xno; then
373 if test x"$ssl_success" = xyes; then
374 dnl AC_MSG_RESULT doesn't look right here, but I'm not sure what
376 AC_MSG_RESULT([Compiling in support for SSL in $ssl_root])
378 AC_SUBST(SSL_INCLUDES)
379 SSL_OBJ='gen_sslfunc$o'
382 LDFLAGS=$wget_save_LDFLAGS
385 dnl If linking with SSL was forced rather than auto-detected, then
386 dnl bail out if SSL failed.
387 if test x"$wget_force_ssl" = x"yes"; then
389 echo "ERROR: Failed to find OpenSSL libraries."
394 dnl Restore the compiler setting.
397 dnl Restore the CPPFLAGS. Do this regardless of whether linking
398 dnl with SSL succeeded -- SSL includes will be handled using
400 CPPFLAGS=$wget_save_CPPFLAGS
404 dnl Find an md5 implementation.
407 if test x"$wget_need_md5" = xyes
413 dnl Check for the system MD5 library on Solaris. We don't check for
414 dnl something simple like "MD5Update" because there are a number of
415 dnl MD5 implementations that use that name. md5_calc is, hopefully,
416 dnl specific to the Solaris MD5 library.
417 if test x"$found_md5" = xno; then
418 AC_CHECK_LIB(md5, md5_calc, [
419 AC_DEFINE(HAVE_SOLARIS_MD5)
425 dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
427 if test x"$found_md5" = xno; then
428 if test x"$ssl_success" = xyes; then
429 AC_DEFINE(HAVE_OPENSSL_MD5)
434 dnl If none of the above worked, use the one we ship with Wget.
435 if test x"$found_md5" = xno; then
436 AC_DEFINE(HAVE_BUILTIN_MD5)
438 MD5_OBJ="$MD5_OBJ gnu-md5\$o"
444 dnl **********************************************************************
446 dnl **********************************************************************
449 dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
450 dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
451 dnl don't use IPv6 or getaddrinfo. If neither are specified, we test
452 dnl whether it's possible to create an AF_INET6 socket and if yes, use
456 AC_MSG_CHECKING([whether to enable ipv6])
458 AC_HELP_STRING([--enable-ipv6],[Enable ipv6 support])
459 AC_HELP_STRING([--disable-ipv6],[Disable ipv6 support]),
460 [ case "$enableval" in
465 *) AC_MSG_RESULT(yes)
470 AC_TRY_RUN([ /* is AF_INET6 available? */
471 #include <sys/types.h>
472 #include <sys/socket.h>
475 if (socket(AF_INET6, SOCK_STREAM, 0) < 0)
489 if test x"$ipv6" = xyes; then
490 WGET_CHECK_WORKING_GETADDRINFO
494 dnl Set of available languages.
496 ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
498 dnl Originally this used to be static, looking like this:
499 dnl ALL_LINGUAS="cs de hr it ..."
500 dnl The downside was that configure needed to be rebuilt whenever a
501 dnl new language was added.
503 dnl internationalization macros
507 dnl Find makeinfo. If makeinfo is not found, look for Emacs. If
508 dnl Emacs cannot be found, look for XEmacs.
511 AC_CHECK_PROGS(MAKEINFO, makeinfo emacs xemacs)
513 case "${MAKEINFO}" in
514 *makeinfo) MAKEINFO="${MAKEINFO} \$(srcdir)/wget.texi" ;;
515 *emacs | *xemacs) MAKEINFO="${MAKEINFO} -batch -q -no-site-file -eval '(find-file \"\$(srcdir)/wget.texi\")' -l texinfmt -f texinfo-format-buffer -f save-buffer" ;;
516 *) MAKEINFO="makeinfo \$(srcdir)/wget.texi" ;;
520 dnl Find perl and pod2man
523 AC_PATH_PROGS(PERL, perl5 perl, no)
524 AC_PATH_PROG(POD2MAN, pod2man, no)
526 if test "x${POD2MAN}" = xno; then
527 COMMENT_IF_NO_POD2MAN="# "
529 COMMENT_IF_NO_POD2MAN=
531 AC_SUBST(COMMENT_IF_NO_POD2MAN)
536 AC_OUTPUT([Makefile src/Makefile doc/Makefile util/Makefile po/Makefile.in
539 test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h])