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="$CFLAGS -O" ;;
131 dnl Configure our included libtool and make sure it's regenerated when needed
134 AC_SUBST(LIBTOOL_DEPS)
137 dnl In case of {cyg,gnu}win32. Should be a _target_ test.
138 dnl Might also be erelevant for DJGPP.
141 *win32) exeext='.exe';;
147 dnl Check if we can handle prototypes.
152 dnl Checks for basic compiler characteristics.
160 dnl Checks for headers
162 AC_CHECK_HEADERS(string.h stdarg.h unistd.h sys/time.h utime.h sys/utime.h)
163 AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h sys/utsname.h)
164 AC_CHECK_HEADERS(inttypes.h signal.h setjmp.h pwd.h)
168 dnl Check integral type sizes.
170 AC_CHECK_SIZEOF(short)
172 AC_CHECK_SIZEOF(long)
173 AC_CHECK_SIZEOF(long long)
176 dnl Checks for non-universal or system-specific types.
180 AC_CHECK_TYPES(uint32_t)
182 AC_CHECK_TYPES(sig_atomic_t, [], [], [
184 #include <sys/types.h>
186 # include <inttypes.h>
194 dnl Checks for library functions.
198 AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
199 AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
200 AC_CHECK_FUNCS(usleep select sigblock sigsetjmp signal symlink access isatty)
203 dnl Call Wget's local macros defined in aclocal.
212 dnl Check if we need to compile in getopt.c.
214 AC_CHECK_FUNC(getopt_long, [], [
215 GETOPT_OBJ='getopt$o'
220 dnl Checks for libraries.
223 dnl #### This appears to be deficient with later versions of SOCKS.
224 if test "x${with_socks}" = xyes
226 AC_CHECK_LIB(resolv, main)
227 AC_CHECK_LIB(socks, Rconnect)
230 dnl $with_ssl can be one of:
231 dnl - empty string or "auto", meaning autodetect SSL and use it if found.
232 dnl - "yes", meaning link with SSL or bail out.
233 dnl - "no", meaning don't link with SSL.
234 dnl - anything else, meaning use that as the SSL root, and bail out
237 if test x"$with_ssl" = x; then
238 dnl Canonicalize unspecified with-ssl setting to "auto". This
239 dnl implements the "auto-detect by default" feature. If you want to
240 dnl change this to "ignore SSL by default", change "auto" to "no".
244 dnl Detection of OpenSSL is much hairier than the detection of other
245 dnl libraries because OpenSSL can be compiled as a third-party
246 dnl library, which means it will not be found without additional
247 dnl linker magic. It would be really nice to rework this check into
248 dnl an AC_DEFUN so that we can reuse it for other third-party
251 if test x"$with_ssl" != x"no"; then
254 if test x"$with_ssl" = x"yes"; then
258 if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
259 dnl OpenSSL's root was not specified, so we have to guess. First
260 dnl try the system default location, then "/usr/local/ssl" (where
261 dnl OpenSSL installs by default), then "/usr/local" (traditional
262 dnl choice for installation root), then "/opt".
263 ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
265 dnl Root has been specified by the user.
266 ssl_all_roots=$with_ssl
272 wget_save_LDFLAGS=$LDFLAGS
273 wget_save_CPPFLAGS=$CPPFLAGS
275 dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
276 dnl without having to know how the linker handles it.
277 CC="$SHELL ./libtool $CC"
279 dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
280 dnl shared library doesn't record its dependency on libdl, so we
281 dnl need to check for it ourselves so we won't fail to link due to a
282 dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
284 AC_CHECK_LIB(dl,dlopen)
285 AC_CHECK_LIB(dl,shl_load)
289 dnl Now try to find SSL libraries in each of the likely SSL roots.
290 for ssl_root in $ssl_all_roots
292 if test x"$ssl_root" = x"system-default"; then
293 dnl Try the default include and library locations.
296 dnl Try this specific root.
297 SSL_INCLUDES=-I$ssl_root/include
298 dnl It's OK to use -R directly because libtool will
299 dnl interpret it for us.
300 LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
303 AC_MSG_NOTICE([looking for SSL libraries in $ssl_root])
305 dnl Check whether the compiler can find the include files. On
306 dnl some systems Gcc finds libraries in /usr/local/lib, but fails
307 dnl to find the includes in /usr/local/include.
309 ssl_found_includes=no
310 CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
312 AC_MSG_CHECKING([for includes])
314 AC_TRY_CPP([#include <openssl/ssl.h>
315 #include <openssl/rsa.h>
317 AC_MSG_RESULT(found); ssl_found_includes=yes,
318 AC_MSG_RESULT([not found])
321 if test x"$ssl_found_includes" = xno; then
327 dnl Make sure that the checks don't run afoul of the cache. It
328 dnl would be nicer to temporarily turn off the cache, but
329 dnl apparently Autoconf doesn't allow that.
331 unset ac_cv_lib_crypto_RSA_new
332 unset ac_cv_lib_ssl_SSL_new
334 dnl These checks need to be in this order, or you'll get a link
335 dnl failure if you use a static libcrypto.a and libssl.a rather
336 dnl than shared libraries.
338 AC_CHECK_LIB(crypto, RSA_new, , ssl_link_failure=yes)
339 AC_CHECK_LIB(ssl, SSL_new, , ssl_link_failure=yes)
341 if test x"$ssl_link_failure" = xyes; then
342 dnl One or both libs failed to link.
346 dnl The libraries link. But we still need to check if the program
347 dnl linked with those libraries under these settings with run. On
348 dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
349 dnl linking line, but fails to add -R/usr/local/lib, thus creating
350 dnl executables that link, but fail to run.
352 dnl If we are cross-compiling, just assume that working linkage
353 dnl implies working executable.
357 AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
364 AC_MSG_RESULT(no); ssl_run_failure=yes,
368 if test x"$ssl_run_failure" = xno; then
374 if test x"$ssl_success" = xyes; then
375 AC_MSG_NOTICE([compiling in support for SSL in $ssl_root])
377 AC_SUBST(SSL_INCLUDES)
378 SSL_OBJ='gen_sslfunc$o'
381 LDFLAGS=$wget_save_LDFLAGS
384 dnl If linking with SSL was forced rather than auto-detected, then
385 dnl bail out if SSL failed.
386 if test x"$wget_force_ssl" = x"yes"; then
387 AC_MSG_ERROR([failed to find OpenSSL libraries], 2)
391 dnl Restore the compiler setting.
394 dnl Restore the CPPFLAGS. Do this regardless of whether linking
395 dnl with SSL succeeded -- SSL includes will be handled using
397 CPPFLAGS=$wget_save_CPPFLAGS
401 dnl Find an md5 implementation.
404 if test x"$wget_need_md5" = xyes
406 dnl This should be moved to an AC_DEFUN, but I'm not sure how to
407 dnl manipulate MD5_OBJ from the defun.
412 dnl Check for the system MD5 library on Solaris. We don't check for
413 dnl something simple like "MD5Update" because there are a number of
414 dnl MD5 implementations that use that name. md5_calc is, hopefully,
415 dnl specific to the Solaris MD5 library.
416 if test x"$found_md5" = xno; then
417 AC_CHECK_LIB(md5, md5_calc, [
418 dnl Some installations have bogus <md5.h> in the compiler's
419 dnl include path, making the system md5 library useless.
420 AC_MSG_CHECKING([whether md5.h can be included])
421 AC_COMPILE_IFELSE([#include <md5.h>
424 AC_DEFINE(HAVE_SOLARIS_MD5)
427 AC_MSG_NOTICE([using the Solaris MD5 implementation])
428 ], [AC_MSG_RESULT(no)])
432 dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
434 if test x"$found_md5" = xno; then
435 if test x"$ssl_success" = xyes; then
436 AC_DEFINE(HAVE_OPENSSL_MD5)
438 AC_MSG_NOTICE([using the OpenSSL MD5 implementation])
442 dnl If none of the above worked, use the one we ship with Wget.
443 if test x"$found_md5" = xno; then
444 AC_DEFINE(HAVE_BUILTIN_MD5)
445 MD5_OBJ="$MD5_OBJ gnu-md5\$o"
447 AC_MSG_NOTICE([using the GNU MD5 implementation])
453 dnl **********************************************************************
455 dnl **********************************************************************
458 dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
459 dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
460 dnl don't use IPv6 or getaddrinfo.
466 AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
467 [case "${enable_ipv6}" in
469 AC_MSG_NOTICE([disabling IPv6 at user request])
476 dnl If unspecified, check for IPv6 and use it where available.
480 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
481 AC_CHECK_FUNCS(getaddrinfo,[
482 GETADDRINFO_AI_ADDRCONFIG(
484 [HAVE_GETADDRINFO_AI_ADDRCONFIG], 1,
485 [Define if the system headers support the AI_ADDRCONFIG flag.]
488 GETADDRINFO_AI_V4MAPPED(
490 [HAVE_GETADDRINFO_AI_V4MAPPED], 1,
491 [Define if the system headers support the AI_V4MAPPED flag.]
496 [HAVE_GETADDRINFO_AI_ALL], 1,
497 [Define if the system headers support the AI_ALL flag.]
501 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support getaddrinfo(3)])
506 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
508 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support the PF_INET6 protocol family])
513 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
514 TYPE_STRUCT_SOCKADDR_IN6([
517 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support 'struct sockaddr_in6'])
520 if test "X$ipv6" = "Xyes"; then
525 if test "X$ipv6" = "Xyes"; then
526 AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
531 dnl Set of available languages.
533 ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
535 dnl Originally this used to be static, looking like this:
536 dnl ALL_LINGUAS="cs de hr it ..."
537 dnl The downside was that configure needed to be rebuilt whenever a
538 dnl new language was added.
540 dnl internationalization macros
544 dnl Find makeinfo. If makeinfo is not found, look for Emacs. If
545 dnl Emacs cannot be found, look for XEmacs.
548 AC_CHECK_PROGS(MAKEINFO, makeinfo emacs xemacs)
550 case "${MAKEINFO}" in
551 *makeinfo) MAKEINFO="${MAKEINFO} \$(srcdir)/wget.texi" ;;
552 *emacs | *xemacs) MAKEINFO="${MAKEINFO} -batch -q -no-site-file -eval '(find-file \"\$(srcdir)/wget.texi\")' -l texinfmt -f texinfo-format-buffer -f save-buffer" ;;
553 *) MAKEINFO="makeinfo \$(srcdir)/wget.texi" ;;
557 dnl Find perl and pod2man
560 AC_PATH_PROGS(PERL, perl5 perl, no)
561 AC_PATH_PROG(POD2MAN, pod2man, no)
563 if test "x${POD2MAN}" = xno; then
564 COMMENT_IF_NO_POD2MAN="# "
566 COMMENT_IF_NO_POD2MAN=
568 AC_SUBST(COMMENT_IF_NO_POD2MAN)
573 AC_OUTPUT([Makefile src/Makefile doc/Makefile util/Makefile po/Makefile.in
576 test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h])