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wget/configure.in

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dnl Template file for GNU Autoconf
dnl Copyright (C) 1995, 1996, 1997, 2001 Free Software Foundation, Inc.
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dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
dnl In addition, as a special exception, the Free Software Foundation
dnl gives permission to link the code of its release of Wget with the
dnl OpenSSL project's "OpenSSL" library (or with modified versions of it
dnl that use the same license as the "OpenSSL" library), and distribute
dnl the linked executables. You must obey the GNU General Public License
dnl in all respects for all of the code used other than "OpenSSL". If you
dnl modify this file, you may extend this exception to your version of the
dnl file, but you are not obligated to do so. If you do not wish to do
dnl so, delete this exception statement from your version.
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dnl
dnl Process this file with autoconf to produce a configure script.
dnl
AC_INIT([src/version.c])
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AC_PREREQ(2.57)
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dnl
dnl What version of Wget are we building?
dnl
VERSION=`sed -e 's/^.*"\(.*\)";$/\1/' ${srcdir}/src/version.c`
AC_MSG_NOTICE([configuring for GNU Wget $VERSION])
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AC_SUBST(VERSION)
PACKAGE=wget
AC_SUBST(PACKAGE)
dnl
dnl Get cannonical host
dnl
AC_CANONICAL_HOST
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AC_DEFINE_UNQUOTED([OS_TYPE], "$host_os",
[Define to be the name of the operating system.])
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dnl
dnl Process features.
dnl
AC_ARG_WITH(ssl,
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[[ --with-ssl[=SSL-ROOT] link with SSL support [default=auto]
--without-ssl disable SSL autodetection]])
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AC_ARG_ENABLE(opie,
[ --disable-opie disable support for opie or s/key FTP login],
USE_OPIE=$enableval, USE_OPIE=yes)
test x"${USE_OPIE}" = xyes && AC_DEFINE([USE_OPIE], 1,
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[Define if you want the Opie support for FTP compiled in.])
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AC_ARG_ENABLE(digest,
[ --disable-digest disable support for HTTP digest authorization],
USE_DIGEST=$enableval, USE_DIGEST=yes)
test x"${USE_DIGEST}" = xyes && AC_DEFINE([USE_DIGEST], 1,
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[Define if you want the HTTP Digest Authorization compiled in.])
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AC_ARG_ENABLE(debug,
[ --disable-debug disable support for debugging output],
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ENABLE_DEBUG=$enableval, ENABLE_DEBUG=yes)
test x"${ENABLE_DEBUG}" = xyes && AC_DEFINE([ENABLE_DEBUG], 1,
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[Define if you want the debug output support compiled in.])
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wget_need_md5=no
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case "${USE_OPIE}${USE_DIGEST}" in
*yes*)
wget_need_md5=yes
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esac
if test x"$USE_OPIE" = xyes; then
OPIE_OBJ='ftp-opie$o'
fi
AC_SUBST(OPIE_OBJ)
dnl
dnl Whether make sets $(MAKE)...
dnl
AC_PROG_MAKE_SET
dnl
dnl Find a good install
dnl
AC_PROG_INSTALL
dnl
dnl Find the compiler
dnl
dnl We want these before the checks, so the checks can modify their values.
test -z "$CFLAGS" && CFLAGS= auto_cflags=1
test -z "$CC" && cc_specified=yes
AC_PROG_CC
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AC_AIX
AM_PROG_CC_STDC
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dnl Turn on optimization by default. Specifically:
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dnl
dnl if the user hasn't specified CFLAGS, then
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dnl if compiler is gcc, then
dnl use -O2 and some warning flags
dnl else
dnl use os-specific flags or -O
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if test -n "$auto_cflags"; then
if test -n "$GCC"; then
CFLAGS="$CFLAGS -O2 -Wall -Wno-implicit"
else
case "$host_os" in
*hpux*) CFLAGS="$CFLAGS +O3" ;;
*ultrix* | *osf*) CFLAGS="$CFLAGS -O -Olimit 2000" ;;
*) CFLAGS="$CFLAGS -O" ;;
esac
fi
fi
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dnl
dnl Configure our included libtool and make sure it's regenerated when needed
dnl
AC_PROG_LIBTOOL
AC_SUBST(LIBTOOL_DEPS)
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dnl
dnl In case of {cyg,gnu}win32. Should be a _target_ test.
dnl Might also be erelevant for DJGPP.
dnl
case "$host_os" in
*win32) exeext='.exe';;
*) exeext='';;
esac
AC_SUBST(exeext)
dnl
dnl Checks for basic compiler characteristics.
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dnl
AC_C_CONST
AC_C_INLINE
AC_C_VOLATILE
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AC_C_BIGENDIAN
AC_C_PROTOTYPES
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if test x"$am_cv_prog_cc_stdc" != xno; then :
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AC_SUBST(U, [])
AC_SUBST(ANSI2KNR, [])
else
AC_SUBST(U, [_])
AC_SUBST(ANSI2KNR, [./ansi2knr])
fi
dnl
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dnl Checks for header files that might be missing.
dnl
dnl Check for basic headers, even those we assume the presence of.
dnl This is because Autoconf default includes check for STDC_HEADERS,
dnl HAVE_SYS_TYPES_H, etc. before including them.
AC_HEADER_STDC
AC_CHECK_HEADERS(sys/types.h sys/stat.h)
dnl Now check for the others.
AC_CHECK_HEADERS(string.h strings.h stdarg.h limits.h unistd.h sys/time.h)
AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h utime.h sys/utime.h)
AC_CHECK_HEADERS(stdint.h inttypes.h signal.h setjmp.h pwd.h)
AC_HEADER_TIME
dnl
dnl Check integral type sizes.
dnl
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long)
dnl
dnl Check for large file support. This check needs to come fairly
dnl early because it could (in principle) affect whether functions and
dnl headers are available, whether they work, etc.
dnl
AC_SYS_LARGEFILE
AC_CHECK_SIZEOF(off_t)
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dnl
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dnl Checks for non-universal or system-specific types.
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dnl
AC_TYPE_SIZE_T
AC_TYPE_PID_T
AC_CHECK_TYPES(uint32_t)
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AC_TYPE_SIGNAL
AC_CHECK_TYPES(sig_atomic_t, [], [], [
#include <stdio.h>
#include <sys/types.h>
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#ifdef HAVE_SIGNAL_H
# include <signal.h>
#endif
])
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dnl
dnl Checks for library functions.
dnl
AC_FUNC_ALLOCA
AC_FUNC_MMAP
AC_FUNC_FSEEKO
AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
AC_CHECK_FUNCS(usleep select ftello sigblock sigsetjmp signal)
AC_CHECK_FUNCS(symlink access isatty)
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dnl
dnl Call Wget's local macros defined in aclocal.
dnl
WGET_STRUCT_UTIMBUF
WGET_SOCKLEN_T
WGET_FNMATCH
WGET_NANOSLEEP
WGET_NSL_SOCKET
dnl
dnl Check if we need to compile in getopt.c.
dnl
AC_CHECK_FUNC(getopt_long, [], [
GETOPT_OBJ='getopt$o'
])
AC_SUBST(GETOPT_OBJ)
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dnl
dnl Checks for libraries.
dnl
dnl $with_ssl can be one of:
dnl - empty string or "auto", meaning autodetect SSL and use it if found.
dnl - "yes", meaning link with SSL or bail out.
dnl - "no", meaning don't link with SSL.
dnl - anything else, meaning use that as the SSL root, and bail out
dnl if it fails.
if test x"$with_ssl" = x; then
dnl Canonicalize unspecified with-ssl setting to "auto". This
dnl implements the "auto-detect by default" feature. If you want to
dnl change this to "ignore SSL by default", change "auto" to "no".
with_ssl=auto
fi
dnl Detection of OpenSSL is much hairier than the detection of other
dnl libraries because OpenSSL can be compiled as a third-party
dnl library, which means it will not be found without additional
dnl linker magic. It would be really nice to rework this check into
dnl an AC_DEFUN so that we can reuse it for other third-party
dnl libraries.
if test x"$with_ssl" != x"no"; then
wget_force_ssl=no
if test x"$with_ssl" = x"yes"; then
wget_force_ssl=yes
fi
if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
dnl OpenSSL's root was not specified, so we have to guess. First
dnl try the system default location, then "/usr/local/ssl" (where
dnl OpenSSL installs by default), then "/usr/local" (traditional
dnl choice for installation root), then "/opt".
ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
else
dnl Root has been specified by the user.
ssl_all_roots=$with_ssl
wget_force_ssl=yes
fi
wget_save_CC=$CC
wget_save_LIBS=$LIBS
wget_save_LDFLAGS=$LDFLAGS
wget_save_CPPFLAGS=$CPPFLAGS
dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
dnl without having to know how the linker handles it.
CC="$SHELL ./libtool $CC"
dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
dnl shared library doesn't record its dependency on libdl, so we
dnl need to check for it ourselves so we won't fail to link due to a
dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
dnl shl_load().
AC_CHECK_LIB(dl,dlopen)
AC_CHECK_LIB(dl,shl_load)
ssl_success=no
dnl Now try to find SSL libraries in each of the likely SSL roots.
for ssl_root in $ssl_all_roots
do
if test x"$ssl_root" = x"system-default"; then
dnl Try the default include and library locations.
SSL_INCLUDES=
else
dnl Try this specific root.
SSL_INCLUDES=-I$ssl_root/include
dnl It's OK to use -R directly because libtool will
dnl interpret it for us.
LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
fi
AC_MSG_NOTICE([looking for SSL libraries in $ssl_root])
dnl Check whether the compiler can find the include files. On
dnl some systems Gcc finds libraries in /usr/local/lib, but fails
dnl to find the includes in /usr/local/include.
ssl_found_includes=no
CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
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AC_MSG_CHECKING([for includes])
AC_COMPILE_IFELSE([
#include <openssl/ssl.h>
#include <openssl/rsa.h>
], [
AC_MSG_RESULT(found)
ssl_found_includes=yes
], [
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AC_MSG_RESULT([not found])
])
if test x"$ssl_found_includes" = xno; then
continue
fi
ssl_link_failure=no
dnl Make sure that the checks don't run afoul of the cache. It
dnl would be nicer to temporarily turn off the cache, but
dnl apparently Autoconf doesn't allow that.
unset ac_cv_lib_crypto_RSA_new
unset ac_cv_lib_ssl_SSL_new
dnl These checks need to be in this order, or you'll get a link
dnl failure if you use a static libcrypto.a and libssl.a rather
dnl than shared libraries.
AC_CHECK_LIB(crypto, RSA_new, , ssl_link_failure=yes)
AC_CHECK_LIB(ssl, SSL_new, , ssl_link_failure=yes)
if test x"$ssl_link_failure" = xyes; then
dnl One or both libs failed to link.
continue
fi
dnl The libraries link. But we still need to check if the program
dnl linked with those libraries under these settings with run. On
dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
dnl linking line, but fails to add -R/usr/local/lib, thus creating
dnl executables that link, but fail to run.
dnl If we are cross-compiling, just assume that working linkage
dnl implies working executable.
ssl_run_failure=no
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AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
AC_TRY_RUN([
int RSA_new();
int SSL_new();
main(){return 0;}
],
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AC_MSG_RESULT(yes),
AC_MSG_RESULT(no); ssl_run_failure=yes,
AC_MSG_RESULT(cross)
)
if test x"$ssl_run_failure" = xno; then
ssl_success=yes
break
fi
done
if test x"$ssl_success" = xyes; then
AC_MSG_NOTICE([compiling in support for SSL in $ssl_root])
AC_DEFINE([HAVE_SSL], 1,
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[Define if SSL support should be compiled in.])
AC_SUBST(SSL_INCLUDES)
SSL_OBJ='gen_sslfunc$o'
AC_SUBST(SSL_OBJ)
else
LDFLAGS=$wget_save_LDFLAGS
LIBS=$wget_save_LIBS
dnl If linking with SSL was forced rather than auto-detected, then
dnl bail out if SSL failed.
if test x"$wget_force_ssl" = x"yes"; then
AC_MSG_ERROR([failed to find OpenSSL libraries], 2)
fi
fi
dnl Restore the compiler setting.
CC=$wget_save_CC
dnl Restore the CPPFLAGS. Do this regardless of whether linking
dnl with SSL succeeded -- SSL includes will be handled using
dnl @SSL_INCLUDES@.
CPPFLAGS=$wget_save_CPPFLAGS
fi
dnl
dnl Find an md5 implementation.
dnl
if test x"$wget_need_md5" = xyes
then
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dnl This should be moved to an AC_DEFUN, but I'm not sure how to
dnl manipulate MD5_OBJ from the defun.
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MD5_OBJ='gen-md5$o'
found_md5=no
dnl Check for the system MD5 library on Solaris. We don't check for
dnl something simple like "MD5Update" because there are a number of
dnl MD5 implementations that use that name. md5_calc is, hopefully,
dnl specific to the Solaris MD5 library.
if test x"$found_md5" = xno; then
AC_CHECK_LIB(md5, md5_calc, [
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dnl Some installations have bogus <md5.h> in the compiler's
dnl include path, making the system md5 library useless.
AC_MSG_CHECKING([for working md5.h])
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AC_COMPILE_IFELSE([#include <md5.h>
], [
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_SOLARIS_MD5], 1, [Define to use Solaris MD5.])
LIBS="-lmd5 $LIBS"
found_md5=yes
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AC_MSG_NOTICE([using the Solaris MD5 implementation])
], [AC_MSG_RESULT(no)])
])
fi
dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
dnl implementation.
if test x"$found_md5" = xno; then
if test x"$ssl_success" = xyes; then
AC_DEFINE([HAVE_OPENSSL_MD5], 1, [Define to use OpenSSL MD5.])
found_md5=yes
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AC_MSG_NOTICE([using the OpenSSL MD5 implementation])
fi
fi
dnl If none of the above worked, use the one we ship with Wget.
if test x"$found_md5" = xno; then
AC_DEFINE([HAVE_BUILTIN_MD5], 1, [Define to use built-in MD5.])
MD5_OBJ="$MD5_OBJ gnu-md5\$o"
found_md5=yes
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AC_MSG_NOTICE([using the GNU MD5 implementation])
fi
fi
AC_DEFINE([HAVE_MD5], 1, [Define if we're compiling support for MD5.])
AC_SUBST(MD5_OBJ)
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dnl **********************************************************************
dnl Checks for IPv6
dnl **********************************************************************
dnl
dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
dnl don't use IPv6 or getaddrinfo.
dnl
ipv6=
check_for_ipv6=no
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AC_ARG_ENABLE(ipv6,
AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
[case "${enable_ipv6}" in
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no)
AC_MSG_NOTICE([disabling IPv6 at user request])
ipv6=no
;;
*)
ipv6=yes
;;
esac],
dnl If unspecified, check for IPv6 and use it where available.
[check_for_ipv6=yes]
)
if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
AC_CHECK_FUNCS(getaddrinfo, [
GETADDRINFO_AI_ADDRCONFIG([
AC_DEFINE(
[HAVE_GETADDRINFO_AI_ADDRCONFIG], 1,
[Define if the system headers support the AI_ADDRCONFIG flag.]
)
])
], [
AC_MSG_NOTICE([Disabling IPv6 support: your system does not support getaddrinfo(3)])
ipv6=no
])
fi
if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
PROTO_INET6([], [
AC_MSG_NOTICE([Disabling IPv6 support: your system does not support the PF_INET6 protocol family])
ipv6=no
])
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fi
if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
TYPE_STRUCT_SOCKADDR_IN6([
ipv6=yes
],[
AC_MSG_NOTICE([Disabling IPv6 support: your system does not support 'struct sockaddr_in6'])
ipv6=no
])
if test "X$ipv6" = "Xyes"; then
WGET_STRUCT_SOCKADDR_STORAGE
MEMBER_SIN6_SCOPE_ID
fi
fi
if test "X$ipv6" = "Xyes"; then
AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
fi
dnl
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dnl Set of available languages.
dnl
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ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
dnl Originally this used to be static, looking like this:
dnl ALL_LINGUAS="cs de hr it ..."
dnl The downside was that configure needed to be rebuilt whenever a
dnl new language was added.
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dnl internationalization macros
WGET_WITH_NLS
dnl
dnl Find makeinfo. We used to provide support for Emacs processing
dnl Texinfo using `emacs -batch -eval ...' where makeinfo is
dnl unavailable, but that broke with the addition of makeinfo-specific
dnl command-line options, such as `-I'. Now we depend on makeinfo to
dnl build the Info documentation.
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dnl
AC_CHECK_PROGS(MAKEINFO, makeinfo)
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dnl
dnl Find perl and pod2man
dnl
AC_PATH_PROGS(PERL, perl5 perl, no)
AC_PATH_PROG(POD2MAN, pod2man, no)
if test "x${POD2MAN}" = xno; then
COMMENT_IF_NO_POD2MAN="# "
else
COMMENT_IF_NO_POD2MAN=
fi
AC_SUBST(COMMENT_IF_NO_POD2MAN)
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dnl
dnl Create output
dnl
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AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile util/Makefile
po/Makefile.in windows/Makefile])
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AC_CONFIG_HEADERS([src/config.h])
AH_BOTTOM([
#include "config-post.h"
])
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AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h])
AC_CONFIG_COMMANDS([default], [WGET_PROCESS_PO])
AC_OUTPUT