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])
36 dnl What version of Wget are we building?
38 VERSION=`sed -e 's/^.*"\(.*\)";$/\1/' ${srcdir}/src/version.c`
39 AC_MSG_NOTICE([configuring for GNU Wget $VERSION])
45 dnl Get cannonical host
48 AC_DEFINE_UNQUOTED([OS_TYPE], "$host_os",
49 [Define to be the name of the operating system.])
56 [[ --with-ssl[=SSL-ROOT] link with SSL support [default=auto]
57 --without-ssl disable SSL autodetection]])
60 [ --disable-opie disable support for opie or s/key FTP login],
61 USE_OPIE=$enableval, USE_OPIE=yes)
62 test x"${USE_OPIE}" = xyes && AC_DEFINE([USE_OPIE], 1,
63 [Define if you want the Opie support for FTP compiled in.])
66 [ --disable-digest disable support for HTTP digest authorization],
67 USE_DIGEST=$enableval, USE_DIGEST=yes)
68 test x"${USE_DIGEST}" = xyes && AC_DEFINE([USE_DIGEST], 1,
69 [Define if you want the HTTP Digest Authorization compiled in.])
72 [ --disable-debug disable support for debugging output],
73 ENABLE_DEBUG=$enableval, ENABLE_DEBUG=yes)
74 test x"${ENABLE_DEBUG}" = xyes && AC_DEFINE([ENABLE_DEBUG], 1,
75 [Define if you want the debug output support compiled in.])
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 "$CC" && cc_specified=yes
110 dnl Turn on optimization by default. Specifically:
112 dnl if the user hasn't specified CFLAGS, then
113 dnl if compiler is gcc, then
114 dnl use -O2 and some warning flags
116 dnl use os-specific flags or -O
117 if test -n "$auto_cflags"; then
118 if test -n "$GCC"; then
119 CFLAGS="$CFLAGS -O2 -Wall -Wno-implicit"
122 *hpux*) CFLAGS="$CFLAGS +O3" ;;
123 *ultrix* | *osf*) CFLAGS="$CFLAGS -O -Olimit 2000" ;;
124 *) CFLAGS="$CFLAGS -O" ;;
130 dnl Configure our included libtool and make sure it's regenerated when needed
133 AC_SUBST(LIBTOOL_DEPS)
136 dnl In case of {cyg,gnu}win32. Should be a _target_ test.
137 dnl Might also be erelevant for DJGPP.
140 *win32) exeext='.exe';;
146 dnl Checks for basic compiler characteristics.
154 if test x"$am_cv_prog_cc_stdc" != xno; then
157 AC_SUBST(ANSI2KNR, [])
160 AC_SUBST(ANSI2KNR, [./ansi2knr])
164 dnl Checks for header files that might be missing.
167 dnl Check for basic headers, even those we assume the presence of.
168 dnl This is because Autoconf default includes check for STDC_HEADERS,
169 dnl HAVE_SYS_TYPES_H, etc. before including them.
171 AC_CHECK_HEADERS(sys/types.h sys/stat.h)
172 dnl Now check for the others.
173 AC_CHECK_HEADERS(string.h strings.h stdarg.h limits.h unistd.h sys/time.h)
174 AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h utime.h sys/utime.h)
175 AC_CHECK_HEADERS(stdint.h inttypes.h signal.h setjmp.h pwd.h)
179 dnl Check integral type sizes.
181 AC_CHECK_SIZEOF(short)
183 AC_CHECK_SIZEOF(long)
184 AC_CHECK_SIZEOF(long long)
187 dnl Checks for non-universal or system-specific types.
191 AC_CHECK_TYPES(uint32_t)
193 AC_CHECK_TYPES(sig_atomic_t, [], [], [
195 #include <sys/types.h>
197 # include <inttypes.h>
205 dnl Checks for library functions.
209 AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
210 AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
211 AC_CHECK_FUNCS(usleep select sigblock sigsetjmp signal symlink access isatty)
214 dnl Call Wget's local macros defined in aclocal.
223 dnl Check if we need to compile in getopt.c.
225 AC_CHECK_FUNC(getopt_long, [], [
226 GETOPT_OBJ='getopt$o'
231 dnl Checks for libraries.
234 dnl $with_ssl can be one of:
235 dnl - empty string or "auto", meaning autodetect SSL and use it if found.
236 dnl - "yes", meaning link with SSL or bail out.
237 dnl - "no", meaning don't link with SSL.
238 dnl - anything else, meaning use that as the SSL root, and bail out
241 if test x"$with_ssl" = x; then
242 dnl Canonicalize unspecified with-ssl setting to "auto". This
243 dnl implements the "auto-detect by default" feature. If you want to
244 dnl change this to "ignore SSL by default", change "auto" to "no".
248 dnl Detection of OpenSSL is much hairier than the detection of other
249 dnl libraries because OpenSSL can be compiled as a third-party
250 dnl library, which means it will not be found without additional
251 dnl linker magic. It would be really nice to rework this check into
252 dnl an AC_DEFUN so that we can reuse it for other third-party
255 if test x"$with_ssl" != x"no"; then
258 if test x"$with_ssl" = x"yes"; then
262 if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
263 dnl OpenSSL's root was not specified, so we have to guess. First
264 dnl try the system default location, then "/usr/local/ssl" (where
265 dnl OpenSSL installs by default), then "/usr/local" (traditional
266 dnl choice for installation root), then "/opt".
267 ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
269 dnl Root has been specified by the user.
270 ssl_all_roots=$with_ssl
276 wget_save_LDFLAGS=$LDFLAGS
277 wget_save_CPPFLAGS=$CPPFLAGS
279 dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
280 dnl without having to know how the linker handles it.
281 CC="$SHELL ./libtool $CC"
283 dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
284 dnl shared library doesn't record its dependency on libdl, so we
285 dnl need to check for it ourselves so we won't fail to link due to a
286 dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
288 AC_CHECK_LIB(dl,dlopen)
289 AC_CHECK_LIB(dl,shl_load)
293 dnl Now try to find SSL libraries in each of the likely SSL roots.
294 for ssl_root in $ssl_all_roots
296 if test x"$ssl_root" = x"system-default"; then
297 dnl Try the default include and library locations.
300 dnl Try this specific root.
301 SSL_INCLUDES=-I$ssl_root/include
302 dnl It's OK to use -R directly because libtool will
303 dnl interpret it for us.
304 LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
307 AC_MSG_NOTICE([looking for SSL libraries in $ssl_root])
309 dnl Check whether the compiler can find the include files. On
310 dnl some systems Gcc finds libraries in /usr/local/lib, but fails
311 dnl to find the includes in /usr/local/include.
313 ssl_found_includes=no
314 CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
316 AC_MSG_CHECKING([for includes])
318 #include <openssl/ssl.h>
319 #include <openssl/rsa.h>
322 ssl_found_includes=yes
324 AC_MSG_RESULT([not found])
327 if test x"$ssl_found_includes" = xno; then
333 dnl Make sure that the checks don't run afoul of the cache. It
334 dnl would be nicer to temporarily turn off the cache, but
335 dnl apparently Autoconf doesn't allow that.
337 unset ac_cv_lib_crypto_RSA_new
338 unset ac_cv_lib_ssl_SSL_new
340 dnl These checks need to be in this order, or you'll get a link
341 dnl failure if you use a static libcrypto.a and libssl.a rather
342 dnl than shared libraries.
344 AC_CHECK_LIB(crypto, RSA_new, , ssl_link_failure=yes)
345 AC_CHECK_LIB(ssl, SSL_new, , ssl_link_failure=yes)
347 if test x"$ssl_link_failure" = xyes; then
348 dnl One or both libs failed to link.
352 dnl The libraries link. But we still need to check if the program
353 dnl linked with those libraries under these settings with run. On
354 dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
355 dnl linking line, but fails to add -R/usr/local/lib, thus creating
356 dnl executables that link, but fail to run.
358 dnl If we are cross-compiling, just assume that working linkage
359 dnl implies working executable.
363 AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
370 AC_MSG_RESULT(no); ssl_run_failure=yes,
374 if test x"$ssl_run_failure" = xno; then
380 if test x"$ssl_success" = xyes; then
381 AC_MSG_NOTICE([compiling in support for SSL in $ssl_root])
382 AC_DEFINE([HAVE_SSL], 1,
383 [Define if SSL support should be compiled in.])
384 AC_SUBST(SSL_INCLUDES)
385 SSL_OBJ='gen_sslfunc$o'
388 LDFLAGS=$wget_save_LDFLAGS
391 dnl If linking with SSL was forced rather than auto-detected, then
392 dnl bail out if SSL failed.
393 if test x"$wget_force_ssl" = x"yes"; then
394 AC_MSG_ERROR([failed to find OpenSSL libraries], 2)
398 dnl Restore the compiler setting.
401 dnl Restore the CPPFLAGS. Do this regardless of whether linking
402 dnl with SSL succeeded -- SSL includes will be handled using
404 CPPFLAGS=$wget_save_CPPFLAGS
408 dnl Find an md5 implementation.
411 if test x"$wget_need_md5" = xyes
413 dnl This should be moved to an AC_DEFUN, but I'm not sure how to
414 dnl manipulate MD5_OBJ from the defun.
419 dnl Check for the system MD5 library on Solaris. We don't check for
420 dnl something simple like "MD5Update" because there are a number of
421 dnl MD5 implementations that use that name. md5_calc is, hopefully,
422 dnl specific to the Solaris MD5 library.
423 if test x"$found_md5" = xno; then
424 AC_CHECK_LIB(md5, md5_calc, [
425 dnl Some installations have bogus <md5.h> in the compiler's
426 dnl include path, making the system md5 library useless.
427 AC_MSG_CHECKING([whether md5.h can be included])
428 AC_COMPILE_IFELSE([#include <md5.h>
431 AC_DEFINE([HAVE_SOLARIS_MD5], 1, [Define to use Solaris MD5.])
434 AC_MSG_NOTICE([using the Solaris MD5 implementation])
435 ], [AC_MSG_RESULT(no)])
439 dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
441 if test x"$found_md5" = xno; then
442 if test x"$ssl_success" = xyes; then
443 AC_DEFINE([HAVE_OPENSSL_MD5], 1, [Define to use OpenSSL MD5.])
445 AC_MSG_NOTICE([using the OpenSSL MD5 implementation])
449 dnl If none of the above worked, use the one we ship with Wget.
450 if test x"$found_md5" = xno; then
451 AC_DEFINE([HAVE_BUILTIN_MD5], 1, [Define to use built-in MD5.])
452 MD5_OBJ="$MD5_OBJ gnu-md5\$o"
454 AC_MSG_NOTICE([using the GNU MD5 implementation])
457 AC_DEFINE([HAVE_MD5], 1, [Define if we're compiling support for MD5.])
460 dnl **********************************************************************
462 dnl **********************************************************************
465 dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
466 dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
467 dnl don't use IPv6 or getaddrinfo.
473 AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
474 [case "${enable_ipv6}" in
476 AC_MSG_NOTICE([disabling IPv6 at user request])
483 dnl If unspecified, check for IPv6 and use it where available.
487 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
488 AC_CHECK_FUNCS(getaddrinfo,[
489 GETADDRINFO_AI_ADDRCONFIG(
491 [HAVE_GETADDRINFO_AI_ADDRCONFIG], 1,
492 [Define if the system headers support the AI_ADDRCONFIG flag.]
495 GETADDRINFO_AI_V4MAPPED(
497 [HAVE_GETADDRINFO_AI_V4MAPPED], 1,
498 [Define if the system headers support the AI_V4MAPPED flag.]
503 [HAVE_GETADDRINFO_AI_ALL], 1,
504 [Define if the system headers support the AI_ALL flag.]
508 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support getaddrinfo(3)])
513 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
515 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support the PF_INET6 protocol family])
520 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
521 TYPE_STRUCT_SOCKADDR_IN6([
524 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support 'struct sockaddr_in6'])
527 if test "X$ipv6" = "Xyes"; then
532 if test "X$ipv6" = "Xyes"; then
533 AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
538 dnl Set of available languages.
540 ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
542 dnl Originally this used to be static, looking like this:
543 dnl ALL_LINGUAS="cs de hr it ..."
544 dnl The downside was that configure needed to be rebuilt whenever a
545 dnl new language was added.
547 dnl internationalization macros
551 dnl Find makeinfo. We used to provide support for Emacs processing
552 dnl Texinfo using `emacs -batch -eval ...' where makeinfo is
553 dnl unavailable, but that broke with the addition of makeinfo-specific
554 dnl command-line options, such as `-I'. Now we depend on makeinfo to
555 dnl build the Info documentation.
558 AC_CHECK_PROGS(MAKEINFO, makeinfo)
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_CONFIG_FILES([Makefile src/Makefile doc/Makefile util/Makefile
578 po/Makefile.in windows/Makefile])
579 AC_CONFIG_HEADERS([src/config.h])
581 #include "config-post.h"
583 AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h])
584 AC_CONFIG_COMMANDS([default], [WGET_PROCESS_PO])