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="$CFLAGS -O" ;;
131 dnl Configure our included libtool and make sure it's regenerated when needed
134 AC_SUBST(LIBTOOL_DEPS)
137 dnl In case of {cyg,gnu}win32. Should be a _target_ test.
138 dnl Might also be erelevant for DJGPP.
141 *win32) exeext='.exe';;
147 dnl Check if we can handle prototypes.
152 dnl Checks for basic compiler characteristics.
160 dnl Checks for headers
162 AC_CHECK_HEADERS(string.h stdarg.h unistd.h sys/time.h utime.h sys/utime.h)
163 AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h sys/utsname.h)
164 AC_CHECK_HEADERS(inttypes.h signal.h setjmp.h pwd.h)
168 dnl Check integral type sizes.
170 AC_CHECK_SIZEOF(short)
172 AC_CHECK_SIZEOF(long)
173 AC_CHECK_SIZEOF(long long)
176 dnl Checks for non-universal or system-specific types.
180 AC_CHECK_TYPES(uint32_t)
182 AC_CHECK_TYPES(sig_atomic_t, [], [], [
185 # include <sys/types.h>
188 # include <inttypes.h>
196 dnl Checks for library functions.
200 AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
201 AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
202 AC_CHECK_FUNCS(usleep select sigblock sigsetjmp signal symlink access isatty)
205 dnl Call Wget's local macros defined in aclocal.
214 dnl Check if we need to compile in getopt.c.
216 AC_CHECK_FUNC(getopt_long, [], [
217 GETOPT_OBJ='getopt$o'
222 dnl Checks for libraries.
225 dnl #### This appears to be deficient with later versions of SOCKS.
226 if test "x${with_socks}" = xyes
228 AC_CHECK_LIB(resolv, main)
229 AC_CHECK_LIB(socks, Rconnect)
232 dnl $with_ssl can be one of:
233 dnl - empty string or "auto", meaning autodetect SSL and use it if found.
234 dnl - "yes", meaning link with SSL or bail out.
235 dnl - "no", meaning don't link with SSL.
236 dnl - anything else, meaning use that as the SSL root, and bail out
239 if test x"$with_ssl" = x; then
240 dnl Canonicalize unspecified with-ssl setting to "auto". This
241 dnl implements the "auto-detect by default" feature. If you want to
242 dnl change this to "ignore SSL by default", change "auto" to "no".
246 dnl Detection of OpenSSL is much hairier than the detection of other
247 dnl libraries because OpenSSL can be compiled as a third-party
248 dnl library, which means it will not be found without additional
249 dnl linker magic. It would be really nice to rework this check into
250 dnl an AC_DEFUN so that we can reuse it for other third-party
253 if test x"$with_ssl" != x"no"; then
256 if test x"$with_ssl" = x"yes"; then
260 if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
261 dnl OpenSSL's root was not specified, so we have to guess. First
262 dnl try the system default location, then "/usr/local/ssl" (where
263 dnl OpenSSL installs by default), then "/usr/local" (traditional
264 dnl choice for installation root), then "/opt".
265 ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
267 dnl Root has been specified by the user.
268 ssl_all_roots=$with_ssl
274 wget_save_LDFLAGS=$LDFLAGS
275 wget_save_CPPFLAGS=$CPPFLAGS
277 dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
278 dnl without having to know how the linker handles it.
279 CC="$SHELL ./libtool $CC"
281 dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
282 dnl shared library doesn't record its dependency on libdl, so we
283 dnl need to check for it ourselves so we won't fail to link due to a
284 dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
286 AC_CHECK_LIB(dl,dlopen)
287 AC_CHECK_LIB(dl,shl_load)
291 dnl Now try to find SSL libraries in each of the likely SSL roots.
292 for ssl_root in $ssl_all_roots
294 if test x"$ssl_root" = x"system-default"; then
295 dnl Try the default include and library locations.
298 dnl Try this specific root.
299 SSL_INCLUDES=-I$ssl_root/include
300 dnl It's OK to use -R directly because libtool will
301 dnl interpret it for us.
302 LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
305 AC_MSG_RESULT([Looking for SSL libraries in $ssl_root])
307 dnl Check whether the compiler can find the include files. On
308 dnl some systems Gcc finds libraries in /usr/local/lib, but fails
309 dnl to find the includes in /usr/local/include.
311 ssl_found_includes=no
312 CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
314 AC_MSG_CHECKING([for includes])
316 AC_TRY_CPP([#include <openssl/ssl.h>
317 #include <openssl/rsa.h>
319 AC_MSG_RESULT(found); ssl_found_includes=yes,
320 AC_MSG_RESULT([not found])
323 if test x"$ssl_found_includes" = xno; then
329 dnl Make sure that the checks don't run afoul of the cache. It
330 dnl would be nicer to temporarily turn off the cache, but
331 dnl apparently Autoconf doesn't allow that.
333 unset ac_cv_lib_crypto_RSA_new
334 unset ac_cv_lib_ssl_SSL_new
336 dnl These checks need to be in this order, or you'll get a link
337 dnl failure if you use a static libcrypto.a and libssl.a rather
338 dnl than shared libraries.
340 AC_CHECK_LIB(crypto, RSA_new, , ssl_link_failure=yes)
341 AC_CHECK_LIB(ssl, SSL_new, , ssl_link_failure=yes)
343 if test x"$ssl_link_failure" = xyes; then
344 dnl One or both libs failed to link.
348 dnl The libraries link. But we still need to check if the program
349 dnl linked with those libraries under these settings with run. On
350 dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
351 dnl linking line, but fails to add -R/usr/local/lib, thus creating
352 dnl executables that link, but fail to run.
354 dnl If we are cross-compiling, just assume that working linkage
355 dnl implies working executable.
359 AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
366 AC_MSG_RESULT(no); ssl_run_failure=yes,
370 if test x"$ssl_run_failure" = xno; then
376 if test x"$ssl_success" = xyes; then
377 dnl AC_MSG_RESULT doesn't look right here, but I'm not sure what
379 AC_MSG_RESULT([Compiling in support for SSL in $ssl_root])
381 AC_SUBST(SSL_INCLUDES)
382 SSL_OBJ='gen_sslfunc$o'
385 LDFLAGS=$wget_save_LDFLAGS
388 dnl If linking with SSL was forced rather than auto-detected, then
389 dnl bail out if SSL failed.
390 if test x"$wget_force_ssl" = x"yes"; then
391 AC_MSG_ERROR([failed to find OpenSSL libraries], 2)
395 dnl Restore the compiler setting.
398 dnl Restore the CPPFLAGS. Do this regardless of whether linking
399 dnl with SSL succeeded -- SSL includes will be handled using
401 CPPFLAGS=$wget_save_CPPFLAGS
405 dnl Find an md5 implementation.
408 if test x"$wget_need_md5" = xyes
410 dnl This should be moved to an AC_DEFUN, but I'm not sure how to
411 dnl manipulate MD5_OBJ from the defun.
416 dnl Check for the system MD5 library on Solaris. We don't check for
417 dnl something simple like "MD5Update" because there are a number of
418 dnl MD5 implementations that use that name. md5_calc is, hopefully,
419 dnl specific to the Solaris MD5 library.
420 if test x"$found_md5" = xno; then
421 AC_CHECK_LIB(md5, md5_calc, [
422 dnl Some installations have bogus <md5.h> in the compiler's
423 dnl include path, making the system md5 library useless.
424 AC_MSG_CHECKING([whether md5.h can be included])
425 AC_COMPILE_IFELSE([#include <md5.h>
428 AC_DEFINE(HAVE_SOLARIS_MD5)
431 AC_MSG_NOTICE([using the Solaris MD5 implementation])
432 ], [AC_MSG_RESULT(no)])
436 dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
438 if test x"$found_md5" = xno; then
439 if test x"$ssl_success" = xyes; then
440 AC_DEFINE(HAVE_OPENSSL_MD5)
442 AC_MSG_NOTICE([using the OpenSSL MD5 implementation])
446 dnl If none of the above worked, use the one we ship with Wget.
447 if test x"$found_md5" = xno; then
448 AC_DEFINE(HAVE_BUILTIN_MD5)
449 MD5_OBJ="$MD5_OBJ gnu-md5\$o"
451 AC_MSG_NOTICE([using the GNU MD5 implementation])
457 dnl **********************************************************************
459 dnl **********************************************************************
462 dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
463 dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
464 dnl don't use IPv6 or getaddrinfo.
470 AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
471 [case "${enable_ipv6}" in
473 AC_MSG_NOTICE([Disabling IPv6 at user request])
480 dnl If unspecified, check for IPv6 and use it where available.
484 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
485 AC_CHECK_FUNCS(getaddrinfo,[
486 GETADDRINFO_AI_ADDRCONFIG(
488 [HAVE_GETADDRINFO_AI_ADDRCONFIG], 1,
489 [Define if the system headers support the AI_ADDRCONFIG flag.]
492 GETADDRINFO_AI_V4MAPPED(
494 [HAVE_GETADDRINFO_AI_V4MAPPED], 1,
495 [Define if the system headers support the AI_V4MAPPED flag.]
500 [HAVE_GETADDRINFO_AI_ALL], 1,
501 [Define if the system headers support the AI_ALL flag.]
505 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support getaddrinfo(3)])
510 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
512 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support the PF_INET6 protocol family])
517 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
518 TYPE_STRUCT_SOCKADDR_IN6([
521 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support 'struct sockaddr_in6'])
524 if test "X$ipv6" = "Xyes"; then
529 if test "X$ipv6" = "Xyes"; then
530 AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
535 dnl Set of available languages.
537 ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
539 dnl Originally this used to be static, looking like this:
540 dnl ALL_LINGUAS="cs de hr it ..."
541 dnl The downside was that configure needed to be rebuilt whenever a
542 dnl new language was added.
544 dnl internationalization macros
548 dnl Find makeinfo. If makeinfo is not found, look for Emacs. If
549 dnl Emacs cannot be found, look for XEmacs.
552 AC_CHECK_PROGS(MAKEINFO, makeinfo emacs xemacs)
554 case "${MAKEINFO}" in
555 *makeinfo) MAKEINFO="${MAKEINFO} \$(srcdir)/wget.texi" ;;
556 *emacs | *xemacs) MAKEINFO="${MAKEINFO} -batch -q -no-site-file -eval '(find-file \"\$(srcdir)/wget.texi\")' -l texinfmt -f texinfo-format-buffer -f save-buffer" ;;
557 *) MAKEINFO="makeinfo \$(srcdir)/wget.texi" ;;
561 dnl Find perl and pod2man
564 AC_PATH_PROGS(PERL, perl5 perl, no)
565 AC_PATH_PROG(POD2MAN, pod2man, no)
567 if test "x${POD2MAN}" = xno; then
568 COMMENT_IF_NO_POD2MAN="# "
570 COMMENT_IF_NO_POD2MAN=
572 AC_SUBST(COMMENT_IF_NO_POD2MAN)
577 AC_OUTPUT([Makefile src/Makefile doc/Makefile util/Makefile po/Makefile.in
580 test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h])