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="$CFLAGS -O" ;;
131 dnl Configure our included libtool and make sure it's regenerated when needed
134 AC_SUBST(LIBTOOL_DEPS)
137 dnl In case of {cyg,gnu}win32. Should be a _target_ test.
138 dnl Might also be erelevant for DJGPP.
141 *win32) exeext='.exe';;
147 dnl Check if we can handle prototypes.
152 dnl Checks for basic compiler characteristics.
160 dnl Checks for headers
162 AC_CHECK_HEADERS(string.h stdarg.h unistd.h sys/time.h utime.h sys/utime.h)
163 AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h sys/utsname.h)
164 AC_CHECK_HEADERS(inttypes.h signal.h setjmp.h pwd.h)
168 dnl Check integral type sizes.
170 AC_CHECK_SIZEOF(short)
172 AC_CHECK_SIZEOF(long)
173 AC_CHECK_SIZEOF(long long)
176 dnl Checks for system-specific types.
180 AC_CHECK_TYPES(uint32_t)
181 AC_CHECK_TYPES(sig_atomic_t, [], [], [
184 # include <sys/types.h>
187 # include <inttypes.h>
195 dnl Return type of signal-handlers
200 dnl Checks for library functions.
204 AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
205 AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
206 AC_CHECK_FUNCS(usleep select sigblock sigsetjmp signal symlink access isatty)
209 dnl Call Wget's local macros defined in aclocal.
218 dnl Check if we need to compile in getopt.c.
220 AC_CHECK_FUNC(getopt_long, [], [
221 GETOPT_OBJ='getopt$o'
226 dnl Checks for libraries.
229 dnl #### This appears to be deficient with later versions of SOCKS.
230 if test "x${with_socks}" = xyes
232 AC_CHECK_LIB(resolv, main)
233 AC_CHECK_LIB(socks, Rconnect)
236 dnl $with_ssl can be one of:
237 dnl - empty string or "auto", meaning autodetect SSL and use it if found.
238 dnl - "yes", meaning link with SSL or bail out.
239 dnl - "no", meaning don't link with SSL.
240 dnl - anything else, meaning use that as the SSL root, and bail out
243 if test x"$with_ssl" = x; then
244 dnl Canonicalize unspecified with-ssl setting to "auto". This
245 dnl implements the "auto-detect by default" feature. If you want to
246 dnl change this to "ignore SSL by default", change "auto" to "no".
250 dnl Detection of OpenSSL is much hairier than the detection of other
251 dnl libraries because OpenSSL can be compiled as a third-party
252 dnl library, which means it will not be found without additional
253 dnl linker magic. It would be really nice to rework this check into
254 dnl an AC_DEFUN so that we can reuse it for other third-party
257 if test x"$with_ssl" != x"no"; then
260 if test x"$with_ssl" = x"yes"; then
264 if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
265 dnl OpenSSL's root was not specified, so we have to guess. First
266 dnl try the system default location, then "/usr/local/ssl" (where
267 dnl OpenSSL installs by default), then "/usr/local" (traditional
268 dnl choice for installation root), then "/opt".
269 ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
271 dnl Root has been specified by the user.
272 ssl_all_roots=$with_ssl
278 wget_save_LDFLAGS=$LDFLAGS
279 wget_save_CPPFLAGS=$CPPFLAGS
281 dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
282 dnl without having to know how the linker handles it.
283 CC="$SHELL ./libtool $CC"
285 dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
286 dnl shared library doesn't record its dependency on libdl, so we
287 dnl need to check for it ourselves so we won't fail to link due to a
288 dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
290 AC_CHECK_LIB(dl,dlopen)
291 AC_CHECK_LIB(dl,shl_load)
295 dnl Now try to find SSL libraries in each of the likely SSL roots.
296 for ssl_root in $ssl_all_roots
298 if test x"$ssl_root" = x"system-default"; then
299 dnl Try the default include and library locations.
302 dnl Try this specific root.
303 SSL_INCLUDES=-I$ssl_root/include
304 dnl It's OK to use -R directly because libtool will
305 dnl interpret it for us.
306 LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
309 AC_MSG_RESULT([Looking for SSL libraries in $ssl_root])
311 dnl Check whether the compiler can find the include files. On
312 dnl some systems Gcc finds libraries in /usr/local/lib, but fails
313 dnl to find the includes in /usr/local/include.
315 ssl_found_includes=no
316 CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
318 AC_MSG_CHECKING([for includes])
320 AC_TRY_CPP([#include <openssl/ssl.h>
321 #include <openssl/rsa.h>
323 AC_MSG_RESULT(found); ssl_found_includes=yes,
324 AC_MSG_RESULT([not found])
327 if test x"$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 dnl AC_MSG_RESULT doesn't look right here, but I'm not sure what
383 AC_MSG_RESULT([Compiling in support for SSL in $ssl_root])
385 AC_SUBST(SSL_INCLUDES)
386 SSL_OBJ='gen_sslfunc$o'
389 LDFLAGS=$wget_save_LDFLAGS
392 dnl If linking with SSL was forced rather than auto-detected, then
393 dnl bail out if SSL failed.
394 if test x"$wget_force_ssl" = x"yes"; then
395 AC_MSG_ERROR([failed to find OpenSSL libraries], 2)
399 dnl Restore the compiler setting.
402 dnl Restore the CPPFLAGS. Do this regardless of whether linking
403 dnl with SSL succeeded -- SSL includes will be handled using
405 CPPFLAGS=$wget_save_CPPFLAGS
409 dnl Find an md5 implementation.
412 if test x"$wget_need_md5" = xyes
414 dnl This should be moved to an AC_DEFUN, but I'm not sure how to
415 dnl manipulate MD5_OBJ from the defun.
420 dnl Check for the system MD5 library on Solaris. We don't check for
421 dnl something simple like "MD5Update" because there are a number of
422 dnl MD5 implementations that use that name. md5_calc is, hopefully,
423 dnl specific to the Solaris MD5 library.
424 if test x"$found_md5" = xno; then
425 AC_CHECK_LIB(md5, md5_calc, [
426 dnl Some installations have bogus <md5.h> in the compiler's
427 dnl include path, making the system md5 library useless.
428 AC_MSG_CHECKING([whether md5.h can be included])
429 AC_COMPILE_IFELSE([#include <md5.h>
432 AC_DEFINE(HAVE_SOLARIS_MD5)
435 AC_MSG_NOTICE([using the Solaris MD5 implementation])
436 ], [AC_MSG_RESULT(no)])
440 dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
442 if test x"$found_md5" = xno; then
443 if test x"$ssl_success" = xyes; then
444 AC_DEFINE(HAVE_OPENSSL_MD5)
446 AC_MSG_NOTICE([using the OpenSSL MD5 implementation])
450 dnl If none of the above worked, use the one we ship with Wget.
451 if test x"$found_md5" = xno; then
452 AC_DEFINE(HAVE_BUILTIN_MD5)
453 MD5_OBJ="$MD5_OBJ gnu-md5\$o"
455 AC_MSG_NOTICE([using the GNU MD5 implementation])
461 dnl **********************************************************************
463 dnl **********************************************************************
466 dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
467 dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
468 dnl don't use IPv6 or getaddrinfo.
474 AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
475 [case "${enable_ipv6}" in
477 AC_MSG_NOTICE([Disabling IPv6 at user request])
484 dnl If unspecified, check for IPv6 and use it where available.
488 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
489 AC_CHECK_FUNCS(getaddrinfo,[
490 GETADDRINFO_AI_ADDRCONFIG(
492 [HAVE_GETADDRINFO_AI_ADDRCONFIG], 1,
493 [Define if the system headers support the AI_ADDRCONFIG flag.]
496 GETADDRINFO_AI_V4MAPPED(
498 [HAVE_GETADDRINFO_AI_V4MAPPED], 1,
499 [Define if the system headers support the AI_V4MAPPED flag.]
504 [HAVE_GETADDRINFO_AI_ALL], 1,
505 [Define if the system headers support the AI_ALL flag.]
509 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support getaddrinfo(3)])
514 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
516 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support the PF_INET6 protocol family])
521 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
522 TYPE_STRUCT_SOCKADDR_IN6([
525 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support 'struct sockaddr_in6'])
528 if test "X$ipv6" = "Xyes"; then
533 if test "X$ipv6" = "Xyes"; then
534 AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
539 dnl Set of available languages.
541 ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
543 dnl Originally this used to be static, looking like this:
544 dnl ALL_LINGUAS="cs de hr it ..."
545 dnl The downside was that configure needed to be rebuilt whenever a
546 dnl new language was added.
548 dnl internationalization macros
552 dnl Find makeinfo. If makeinfo is not found, look for Emacs. If
553 dnl Emacs cannot be found, look for XEmacs.
556 AC_CHECK_PROGS(MAKEINFO, makeinfo emacs xemacs)
558 case "${MAKEINFO}" in
559 *makeinfo) MAKEINFO="${MAKEINFO} \$(srcdir)/wget.texi" ;;
560 *emacs | *xemacs) MAKEINFO="${MAKEINFO} -batch -q -no-site-file -eval '(find-file \"\$(srcdir)/wget.texi\")' -l texinfmt -f texinfo-format-buffer -f save-buffer" ;;
561 *) MAKEINFO="makeinfo \$(srcdir)/wget.texi" ;;
565 dnl Find perl and pod2man
568 AC_PATH_PROGS(PERL, perl5 perl, no)
569 AC_PATH_PROG(POD2MAN, pod2man, no)
571 if test "x${POD2MAN}" = xno; then
572 COMMENT_IF_NO_POD2MAN="# "
574 COMMENT_IF_NO_POD2MAN=
576 AC_SUBST(COMMENT_IF_NO_POD2MAN)
581 AC_OUTPUT([Makefile src/Makefile doc/Makefile util/Makefile po/Makefile.in
584 test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h])