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wget/configure.in
2003-10-25 18:41:56 -07:00

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dnl Template file for GNU Autoconf
dnl Copyright (C) 1995, 1996, 1997, 2001 Free Software Foundation, Inc.
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.
dnl
dnl Process this file with autoconf to produce a configure script.
dnl
AC_INIT(src/version.c)
AC_PREREQ(2.50)
AC_CONFIG_HEADER(src/config.h)
dnl
dnl What version of Wget are we building?
dnl
VERSION=`sed -e 's/^.*"\(.*\)";$/\1/' ${srcdir}/src/version.c`
echo "configuring for GNU Wget $VERSION"
AC_SUBST(VERSION)
PACKAGE=wget
AC_SUBST(PACKAGE)
dnl
dnl Get cannonical host
dnl
AC_CANONICAL_HOST
AC_DEFINE_UNQUOTED(OS_TYPE, "$host_os")
dnl
dnl Process features.
dnl
AC_ARG_WITH(socks,
[ --with-socks use the socks library],
[AC_DEFINE(HAVE_SOCKS)])
AC_ARG_WITH(ssl,
[[ --with-ssl[=SSL-ROOT] link with SSL support [default=auto]
--without-ssl disable SSL autodetection]])
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)
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)
AC_ARG_ENABLE(debug,
[ --disable-debug disable support for debugging output],
ENABLE_DEBUG=$enableval, ENABLE_DEBUG=yes)
test x"${ENABLE_DEBUG}" = xyes && AC_DEFINE(ENABLE_DEBUG)
wget_need_md5=no
case "${USE_OPIE}${USE_DIGEST}" in
*yes*)
wget_need_md5=yes
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 "$CC" && cc_specified=yes
AC_PROG_CC
dnl
dnl if the user hasn't specified CFLAGS, then
dnl if compiler is gcc, then use -O2 and some warning flags
dnl else use os-specific flags or -O
dnl
if test -n "$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
dnl
dnl Handle AIX
dnl
AC_AIX
dnl
dnl Configure our included libtool and make sure it's regenerated when needed
dnl
AC_PROG_LIBTOOL
AC_SUBST(LIBTOOL_DEPS)
dnl
dnl In case of {cyg,gnu}win32. Should be a _target_ test.
dnl Might also be erelevant for DJGPP.
dnl
case "$host_os" in
*win32) exeext='.exe';;
*) exeext='';;
esac
AC_SUBST(exeext)
dnl
dnl Check if we can handle prototypes.
dnl
AM_C_PROTOTYPES
dnl
dnl Checks for typedefs, structures, and compiler characteristics.
dnl
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_TYPE_PID_T
AC_C_BIGENDIAN
dnl
dnl Check integral type sizes.
dnl
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long)
AC_CHECK_HEADERS(inttypes.h)
AC_CHECK_TYPES(uint32_t)
dnl
dnl Checks for headers
dnl
AC_CHECK_HEADERS(string.h stdarg.h unistd.h sys/time.h utime.h sys/utime.h pwd.h)
AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h sys/utsname.h)
AC_CHECK_HEADERS(signal.h setjmp.h)
AC_HEADER_TIME
dnl
dnl Return type of signal-handlers
dnl
AC_TYPE_SIGNAL
dnl
dnl Call several of Wget's macros.
dnl
WGET_STRUCT_UTIMBUF
WGET_SOCKLEN_T
dnl
dnl Checks for library functions.
dnl
AC_FUNC_ALLOCA
AC_FUNC_MMAP
AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
AC_CHECK_FUNCS(select sigblock sigsetjmp signal symlink access isatty)
AC_CHECK_FUNCS(uname gethostname usleep)
dnl
dnl Check if we need to compile in getopt.c.
dnl
AC_CHECK_FUNC(getopt_long, [], [
GETOPT_OBJ='getopt$o'
])
AC_SUBST(GETOPT_OBJ)
dnl
dnl Checks for libraries.
dnl
dnl On Solaris, -lnsl is needed to use gethostbyname. On "NCR MP-RAS
dnl 3.0", however, gethostbyname is in libc, but -lnsl is still needed
dnl to use -lsocket, as well as for functions such as inet_ntoa. We
dnl look for such known offenders and if one of them is not found, we
dnl check if -lnsl is needed.
wget_check_in_nsl=NONE
AC_CHECK_FUNCS(gethostbyname, [], [
wget_check_in_nsl=gethostbyname
])
AC_CHECK_FUNCS(inet_ntoa, [], [
wget_check_in_nsl=inet_ntoa
])
if test $wget_check_in_nsl != NONE; then
AC_CHECK_LIB(nsl, $wget_check_in_nsl)
fi
AC_CHECK_LIB(socket, socket)
dnl #### This appears to be deficient with later versions of SOCKS.
if test "x${with_socks}" = xyes
then
AC_CHECK_LIB(resolv, main)
AC_CHECK_LIB(socks, Rconnect)
fi
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_RESULT([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 $wget_save_CPPFLAGS"
AC_MSG_CHECKING([for includes])
AC_TRY_CPP([#include <openssl/ssl.h>
#include <openssl/rsa.h>
],
AC_MSG_RESULT(found); ssl_found_includes=yes,
AC_MSG_RESULT([not found])
)
if test x"$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"$ssl_link_failure" = xyes; then
dnl One or both libs failed to link.
continue
fi
dnl The libraries link. But we still need to check if the program
dnl linked with those libraries under these settings with run. On
dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
dnl linking line, but fails to add -R/usr/local/lib, thus creating
dnl executables that link, but fail to run.
dnl If we are cross-compiling, just assume that working linkage
dnl implies working executable.
ssl_run_failure=no
AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
AC_TRY_RUN([
int RSA_new();
int SSL_new();
main(){return 0;}
],
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no); ssl_run_failure=yes,
AC_MSG_RESULT(cross)
)
if test x"$ssl_run_failure" = xno; then
ssl_success=yes
break
fi
done
if test x"$ssl_success" = xyes; then
dnl AC_MSG_RESULT doesn't look right here, but I'm not sure what
dnl to use instead.
AC_MSG_RESULT([Compiling in support for SSL in $ssl_root])
AC_DEFINE(HAVE_SSL)
AC_SUBST(SSL_INCLUDES)
SSL_OBJ='gen_sslfunc$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"$wget_force_ssl" = x"yes"; then
exec >&2
echo "ERROR: Failed to find OpenSSL libraries."
exit 2
fi
fi
dnl Restore the compiler setting.
CC=$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
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, [
AC_DEFINE(HAVE_SOLARIS_MD5)
LIBS="-lmd5 $LIBS"
found_md5=yes
])
fi
dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
dnl implementation.
if test x"$found_md5" = xno; then
if test x"$ssl_success" = xyes; then
AC_DEFINE(HAVE_OPENSSL_MD5)
found_md5=yes
fi
fi
dnl If none of the above worked, use the one we ship with Wget.
if test x"$found_md5" = xno; then
AC_DEFINE(HAVE_BUILTIN_MD5)
found_md5=yes
MD5_OBJ="$MD5_OBJ gnu-md5\$o"
fi
fi
AC_DEFINE(HAVE_MD5)
AC_SUBST(MD5_OBJ)
dnl **********************************************************************
dnl Checks for IPv6
dnl **********************************************************************
ipv6=
check_for_ipv6=no
AC_ARG_ENABLE(ipv6,
AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
[case "${enable_ipv6}" in
no)
AC_MSG_NOTICE([Disabling IPv6 at user request])
ipv6=no
;;
*)
ipv6=yes
;;
esac],
[check_for_ipv6=no]
)
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.]
)
)
GETADDRINFO_AI_V4MAPPED(
AC_DEFINE(
[HAVE_GETADDRINFO_AI_V4MAPPED], 1,
[Define if the system headers support the AI_V4MAPPED flag.]
)
)
GETADDRINFO_AI_ALL(
AC_DEFINE(
[HAVE_GETADDRINFO_AI_ALL], 1,
[Define if the system headers support the AI_ALL 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
])
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$ipv6" = "Xyes"; then
MEMBER_SIN6_SCOPE_ID
fi
fi
if test "X$ipv6" = "Xyes"; then
AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
fi
dnl
dnl Set of available languages.
dnl
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.
dnl internationalization macros
WGET_WITH_NLS
dnl
dnl Find makeinfo. If makeinfo is not found, look for Emacs. If
dnl Emacs cannot be found, look for XEmacs.
dnl
AC_CHECK_PROGS(MAKEINFO, makeinfo emacs xemacs)
case "${MAKEINFO}" in
*makeinfo) MAKEINFO="${MAKEINFO} \$(srcdir)/wget.texi" ;;
*emacs | *xemacs) MAKEINFO="${MAKEINFO} -batch -q -no-site-file -eval '(find-file \"\$(srcdir)/wget.texi\")' -l texinfmt -f texinfo-format-buffer -f save-buffer" ;;
*) MAKEINFO="makeinfo \$(srcdir)/wget.texi" ;;
esac
dnl
dnl Find perl and pod2man
dnl
AC_PATH_PROGS(PERL, perl5 perl, no)
AC_PATH_PROG(POD2MAN, pod2man, no)
if test "x${POD2MAN}" = xno; then
COMMENT_IF_NO_POD2MAN="# "
else
COMMENT_IF_NO_POD2MAN=
fi
AC_SUBST(COMMENT_IF_NO_POD2MAN)
dnl
dnl Create output
dnl
AC_OUTPUT([Makefile src/Makefile doc/Makefile util/Makefile po/Makefile.in
windows/Makefile],
[WGET_PROCESS_PO
test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h])