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 :
156 AC_SUBST(ANSI2KNR, [])
159 AC_SUBST(ANSI2KNR, [./ansi2knr])
163 dnl Checks for header files that might be missing.
166 dnl Check for basic headers, even those we assume the presence of.
167 dnl This is because Autoconf default includes check for STDC_HEADERS,
168 dnl HAVE_SYS_TYPES_H, etc. before including them.
170 AC_CHECK_HEADERS(sys/types.h sys/stat.h)
171 dnl Now check for the others.
172 AC_CHECK_HEADERS(string.h strings.h stdarg.h limits.h unistd.h sys/time.h)
173 AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h utime.h sys/utime.h)
174 AC_CHECK_HEADERS(stdint.h inttypes.h signal.h setjmp.h pwd.h)
178 dnl Check integral type sizes.
180 AC_CHECK_SIZEOF(short)
182 AC_CHECK_SIZEOF(long)
183 AC_CHECK_SIZEOF(long long)
186 dnl Check for large file support. This check needs to come fairly
187 dnl early because it could (in principle) affect whether functions and
188 dnl headers are available, whether they work, etc.
191 AC_CHECK_SIZEOF(off_t)
194 dnl Checks for non-universal or system-specific types.
198 AC_CHECK_TYPES(uint32_t)
200 AC_CHECK_TYPES(sig_atomic_t, [], [], [
202 #include <sys/types.h>
204 # include <inttypes.h>
212 dnl Checks for library functions.
217 AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
218 AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
219 AC_CHECK_FUNCS(usleep select ftello sigblock sigsetjmp signal)
220 AC_CHECK_FUNCS(symlink access isatty)
223 dnl Call Wget's local macros defined in aclocal.
232 dnl Check if we need to compile in getopt.c.
234 AC_CHECK_FUNC(getopt_long, [], [
235 GETOPT_OBJ='getopt$o'
240 dnl Checks for libraries.
243 dnl $with_ssl can be one of:
244 dnl - empty string or "auto", meaning autodetect SSL and use it if found.
245 dnl - "yes", meaning link with SSL or bail out.
246 dnl - "no", meaning don't link with SSL.
247 dnl - anything else, meaning use that as the SSL root, and bail out
250 if test x"$with_ssl" = x; then
251 dnl Canonicalize unspecified with-ssl setting to "auto". This
252 dnl implements the "auto-detect by default" feature. If you want to
253 dnl change this to "ignore SSL by default", change "auto" to "no".
257 dnl Detection of OpenSSL is much hairier than the detection of other
258 dnl libraries because OpenSSL can be compiled as a third-party
259 dnl library, which means it will not be found without additional
260 dnl linker magic. It would be really nice to rework this check into
261 dnl an AC_DEFUN so that we can reuse it for other third-party
264 if test x"$with_ssl" != x"no"; then
267 if test x"$with_ssl" = x"yes"; then
271 if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
272 dnl OpenSSL's root was not specified, so we have to guess. First
273 dnl try the system default location, then "/usr/local/ssl" (where
274 dnl OpenSSL installs by default), then "/usr/local" (traditional
275 dnl choice for installation root), then "/opt".
276 ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
278 dnl Root has been specified by the user.
279 ssl_all_roots=$with_ssl
285 wget_save_LDFLAGS=$LDFLAGS
286 wget_save_CPPFLAGS=$CPPFLAGS
288 dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
289 dnl without having to know how the linker handles it.
290 CC="$SHELL ./libtool $CC"
292 dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
293 dnl shared library doesn't record its dependency on libdl, so we
294 dnl need to check for it ourselves so we won't fail to link due to a
295 dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
297 AC_CHECK_LIB(dl,dlopen)
298 AC_CHECK_LIB(dl,shl_load)
302 dnl Now try to find SSL libraries in each of the likely SSL roots.
303 for ssl_root in $ssl_all_roots
305 if test x"$ssl_root" = x"system-default"; then
306 dnl Try the default include and library locations.
309 dnl Try this specific root.
310 SSL_INCLUDES=-I$ssl_root/include
311 dnl It's OK to use -R directly because libtool will
312 dnl interpret it for us.
313 LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
316 AC_MSG_NOTICE([looking for SSL libraries in $ssl_root])
318 dnl Check whether the compiler can find the include files. On
319 dnl some systems Gcc finds libraries in /usr/local/lib, but fails
320 dnl to find the includes in /usr/local/include.
322 ssl_found_includes=no
323 CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
325 AC_MSG_CHECKING([for includes])
327 #include <openssl/ssl.h>
328 #include <openssl/rsa.h>
331 ssl_found_includes=yes
333 AC_MSG_RESULT([not found])
336 if test x"$ssl_found_includes" = xno; then
342 dnl Make sure that the checks don't run afoul of the cache. It
343 dnl would be nicer to temporarily turn off the cache, but
344 dnl apparently Autoconf doesn't allow that.
346 unset ac_cv_lib_crypto_RSA_new
347 unset ac_cv_lib_ssl_SSL_new
349 dnl These checks need to be in this order, or you'll get a link
350 dnl failure if you use a static libcrypto.a and libssl.a rather
351 dnl than shared libraries.
353 AC_CHECK_LIB(crypto, RSA_new, , ssl_link_failure=yes)
354 AC_CHECK_LIB(ssl, SSL_new, , ssl_link_failure=yes)
356 if test x"$ssl_link_failure" = xyes; then
357 dnl One or both libs failed to link.
361 dnl The libraries link. But we still need to check if the program
362 dnl linked with those libraries under these settings with run. On
363 dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
364 dnl linking line, but fails to add -R/usr/local/lib, thus creating
365 dnl executables that link, but fail to run.
367 dnl If we are cross-compiling, just assume that working linkage
368 dnl implies working executable.
372 AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
379 AC_MSG_RESULT(no); ssl_run_failure=yes,
383 if test x"$ssl_run_failure" = xno; then
389 if test x"$ssl_success" = xyes; then
390 AC_MSG_NOTICE([compiling in support for SSL in $ssl_root])
391 AC_DEFINE([HAVE_SSL], 1,
392 [Define if SSL support should be compiled in.])
393 AC_SUBST(SSL_INCLUDES)
394 SSL_OBJ='gen_sslfunc$o'
397 LDFLAGS=$wget_save_LDFLAGS
400 dnl If linking with SSL was forced rather than auto-detected, then
401 dnl bail out if SSL failed.
402 if test x"$wget_force_ssl" = x"yes"; then
403 AC_MSG_ERROR([failed to find OpenSSL libraries], 2)
407 dnl Restore the compiler setting.
410 dnl Restore the CPPFLAGS. Do this regardless of whether linking
411 dnl with SSL succeeded -- SSL includes will be handled using
413 CPPFLAGS=$wget_save_CPPFLAGS
417 dnl Find an md5 implementation.
420 if test x"$wget_need_md5" = xyes
422 dnl This should be moved to an AC_DEFUN, but I'm not sure how to
423 dnl manipulate MD5_OBJ from the defun.
428 dnl Check for the system MD5 library on Solaris. We don't check for
429 dnl something simple like "MD5Update" because there are a number of
430 dnl MD5 implementations that use that name. md5_calc is, hopefully,
431 dnl specific to the Solaris MD5 library.
432 if test x"$found_md5" = xno; then
433 AC_CHECK_LIB(md5, md5_calc, [
434 dnl Some installations have bogus <md5.h> in the compiler's
435 dnl include path, making the system md5 library useless.
436 AC_MSG_CHECKING([for working md5.h])
437 AC_COMPILE_IFELSE([#include <md5.h>
440 AC_DEFINE([HAVE_SOLARIS_MD5], 1, [Define to use Solaris MD5.])
443 AC_MSG_NOTICE([using the Solaris MD5 implementation])
444 ], [AC_MSG_RESULT(no)])
448 dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
450 if test x"$found_md5" = xno; then
451 if test x"$ssl_success" = xyes; then
452 AC_DEFINE([HAVE_OPENSSL_MD5], 1, [Define to use OpenSSL MD5.])
454 AC_MSG_NOTICE([using the OpenSSL MD5 implementation])
458 dnl If none of the above worked, use the one we ship with Wget.
459 if test x"$found_md5" = xno; then
460 AC_DEFINE([HAVE_BUILTIN_MD5], 1, [Define to use built-in MD5.])
461 MD5_OBJ="$MD5_OBJ gnu-md5\$o"
463 AC_MSG_NOTICE([using the GNU MD5 implementation])
466 AC_DEFINE([HAVE_MD5], 1, [Define if we're compiling support for MD5.])
469 dnl **********************************************************************
471 dnl **********************************************************************
474 dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
475 dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
476 dnl don't use IPv6 or getaddrinfo.
482 AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
483 [case "${enable_ipv6}" in
485 AC_MSG_NOTICE([disabling IPv6 at user request])
492 dnl If unspecified, check for IPv6 and use it where available.
496 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
497 AC_CHECK_FUNCS(getaddrinfo, [], [
498 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support getaddrinfo(3)])
503 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
505 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support the PF_INET6 protocol family])
510 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
511 TYPE_STRUCT_SOCKADDR_IN6([
514 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support 'struct sockaddr_in6'])
517 if test "X$ipv6" = "Xyes"; then
518 WGET_STRUCT_SOCKADDR_STORAGE
523 if test "X$ipv6" = "Xyes"; then
524 AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
529 dnl Set of available languages.
531 ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
533 dnl Originally this used to be static, looking like this:
534 dnl ALL_LINGUAS="cs de hr it ..."
535 dnl The downside was that configure needed to be rebuilt whenever a
536 dnl new language was added.
538 dnl internationalization macros
542 dnl Find makeinfo. We used to provide support for Emacs processing
543 dnl Texinfo using `emacs -batch -eval ...' where makeinfo is
544 dnl unavailable, but that broke with the addition of makeinfo-specific
545 dnl command-line options, such as `-I'. Now we depend on makeinfo to
546 dnl build the Info documentation.
549 AC_CHECK_PROGS(MAKEINFO, makeinfo)
552 dnl Find perl and pod2man
555 AC_PATH_PROGS(PERL, perl5 perl, no)
556 AC_PATH_PROG(POD2MAN, pod2man, no)
558 if test "x${POD2MAN}" = xno; then
559 COMMENT_IF_NO_POD2MAN="# "
561 COMMENT_IF_NO_POD2MAN=
563 AC_SUBST(COMMENT_IF_NO_POD2MAN)
568 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile util/Makefile
569 po/Makefile.in windows/Makefile])
570 AC_CONFIG_HEADERS([src/config.h])
572 #include "config-post.h"
574 AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h])
575 AC_CONFIG_COMMANDS([default], [WGET_PROCESS_PO])