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AC_DEFUN([DM_MSG_CONFIGURE_START], [dnl
AC_MSG_RESULT([
This is dbmail's GNU configure script.
])
])
AC_DEFUN([DM_MSG_CONFIGURE_RESULTS], [dnl
AC_MSG_RESULT([
DM_LOGDIR: $DM_LOGDIR
DM_CONFDIR: $DM_CONFDIR
DM_STATEDIR: $DM_STATEDIR
USE_DM_GETOPT: $USE_DM_GETOPT
CFLAGS: $CFLAGS
GLIB: $ac_glib_libs
GMIME: $ac_gmime_libs
SIEVE: $SIEVEINC$SIEVELIB
LDAP: $LDAPINC$LDAPLIB
SHARED: $enable_shared
STATIC: $enable_static
CHECK: $CHECK_LIBS
SOCKETS: $SOCKETLIB
MATH: $MATHLIB
MHASH: $MHASHLIB
LIBEVENT: $EVENTLIB
OPENSSL: $SSLLIB
ZDB: $ZDBLIB
])
])
AC_DEFUN([DM_DEFINES],[dnl
AC_ARG_WITH(logdir,
[ --with-logdir use logdir for logfiles],
logdirname="$withval")
if test "x$logdirname" = "x"; then
DM_LOGDIR="/var/log"
else
DM_LOGDIR="$logdirname"
fi
if test "x$localstatedir" = 'x${prefix}/var'; then
DM_STATEDIR='/var/run'
else
DM_STATEDIR=$localstatedir
fi
if test "x$sysconfdir" = 'x${prefix}/etc'; then
DM_CONFDIR='/etc'
else
DM_CONFDIR=$sysconfdir
fi
if test "x$prefix" = "xNONE"; then
AC_DEFINE_UNQUOTED([PREFIX], "$ac_default_prefix", [Prefix to the installed path])
else
AC_DEFINE_UNQUOTED([PREFIX], "$prefix", [Prefix to the installed path])
fi
])
AC_DEFUN([DM_SET_SHARED_OR_STATIC], [dnl
if test [ "$enable_shared" = "yes" -a "$enable_static" = "yes" ]; then
AC_MSG_ERROR([
You cannot enable both shared and static build.
Please choose only one to enable.
])
fi
if test [ "$enable_shared" = "no" -a "$enable_static" = "no" ]; then
enable_shared="yes"
fi
])
AC_DEFUN([DM_SIEVE_INC],[
AC_COMPILE_IFELSE(
AC_LANG_PROGRAM([[
#define NULL 0
#include <sieve2.h>]]),
[$1],
[$2])
])
AC_DEFUN([DM_SIEVE_LIB],[
AC_LINK_IFELSE(
AC_LANG_PROGRAM([[
#define NULL 0
#include <sieve2.h>]]),
[$1],
[$2])
])
AC_DEFUN([DM_SIEVE_CONF], [dnl
WARN=0
AC_ARG_WITH(sieve,[ --with-sieve=PATH path to libSieve base directory (e.g. /usr/local or /usr)],
[lookforsieve="$withval"],[lookforsieve="no"])
SORTALIB="modules/.libs/libsort_null.a"
SORTLTLIB="modules/libsort_null.la"
if test [ "x$lookforsieve" != "xno" ]; then
if test [ "x$lookforsieve" != "xyes" ]; then
sieveprefixes=$lookforsieve
fi
AC_MSG_CHECKING([for libSieve headers])
STOP_LOOKING_FOR_SIEVE=""
while test [ -z $STOP_LOOKING_FOR_SIEVE ]; do
if test [ "x$lookforsieve" = "xyes" ]; then
DM_SIEVE_INC([SIEVEINC=""], [SIEVEINC="failed"])
if test [ "x$SIEVEINC" != "xfailed" ]; then
break
fi
fi
for TEST_PATH in $sieveprefixes; do
TEST_PATH="$TEST_PATH/include"
SAVE_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS -I$TEST_PATH"
DM_SIEVE_INC([SIEVEINC="-I$TEST_PATH"], [SIEVEINC="failed"])
CFLAGS=$SAVE_CFLAGS
if test [ "x$SIEVEINC" != "xfailed" ]; then
break 2
fi
done
STOP_LOOKING_FOR_SIEVE="done"
done
if test [ "x$SIEVEINC" = "xfailed" ]; then
AC_MSG_ERROR([Could not find libSieve headers.])
else
AC_MSG_RESULT($SIEVEINC)
fi
AC_MSG_CHECKING([for libSieve libraries])
STOP_LOOKING_FOR_SIEVE=""
while test [ -z $STOP_LOOKING_FOR_SIEVE ]; do
if test [ "x$lookforsieve" = "xyes" ]; then
DM_SIEVE_LIB([SIEVELIB="-lsieve"], [SIEVELIB="failed"])
if test [ "x$SIEVELIB" != "xfailed" ]; then
break
fi
fi
for TEST_PATH in $sieveprefixes; do
TEST_PATH="$TEST_PATH/lib"
SAVE_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS -L$TEST_PATH $SIEVEINC"
DM_SIEVE_LIB([SIEVELIB="-L$TEST_PATH -lsieve"], [SIEVELIB="failed"])
CFLAGS=$SAVE_CFLAGS
if test [ "x$SIEVELIB" != "xfailed" ]; then
break 2
fi
done
STOP_LOOKING_FOR_SIEVE="done"
done
if test [ "x$SIEVELIB" = "xfailed" ]; then
AC_MSG_ERROR([Could not find libSieve library.])
else
dnl Found it, set the settings.
AC_MSG_RESULT($SIEVELIB)
AC_DEFINE([SIEVE], 1, [Define if Sieve sorting will be used.])
AC_SUBST(SIEVELIB)
AC_SUBST(SIEVEINC)
SORTALIB="modules/.libs/libsort_sieve.a"
SORTLTLIB="modules/libsort_sieve.la"
fi
fi
])
AC_DEFUN([DM_LDAP_CONF], [dnl
WARN=0
dnl --with-auth-ldap is deprecated as of DBMail 2.2.2
AC_ARG_WITH(auth-ldap,[ --with-auth-ldap=PATH deprecated, use --with-ldap],
[lookforauthldap="$withval"],[lookforauthldap="no"])
AC_ARG_WITH(ldap,[ --with-ldap=PATH path to LDAP base directory (e.g. /usr/local or /usr)],
[lookforldap="$withval"],[lookforldap="no"])
dnl Set the default auth modules to sql, as
dnl the user may not have asked for LDAP at all.
AUTHALIB="modules/.libs/libauth_sql.a"
AUTHLTLIB="modules/libauth_sql.la"
dnl Go looking for the LDAP headers and libraries.
if ( test [ "x$lookforldap" != "xno" ] || test [ "x$lookforauthldap" != "xno" ] ); then
dnl Support the deprecated --with-auth-ldap per comment above.
if ( test [ "x$lookforauthldap" != "xyes" ] && test [ "x$lookforauthldap" != "xno" ] ); then
lookforldap=$lookforauthldap
fi
dnl We were given a specific path. Only look there.
if ( test [ "x$lookforldap" != "xyes" ] && test [ "x$lookforldap" != "xno" ] ); then
ldapprefixes=$lookforldap
fi
STOP_LOOKING_FOR_LDAP=""
while test [ -z $STOP_LOOKING_FOR_LDAP ]; do
dnl See if we already have the paths we need in the environment.
dnl ...but only if --with-ldap was given without a specific path.
if ( test [ "x$lookforldap" = "xyes" ] || test [ "x$lookforauthldap" = "xyes" ] ); then
AC_CHECK_HEADERS([ldap.h],[LDAPINC=""], [LDAPINC="failed"])
if test [ "x$LDAPINC" != "xfailed" ]; then
break
fi
fi
dnl Explicitly test paths from --with-ldap or configure.in
for TEST_PATH in $ldapprefixes; do
TEST_PATH="$TEST_PATH/include"
SAVE_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS -I$TEST_PATH"
AC_CHECK_HEADERS([ldap.h],[LDAPINC="-I$TEST_PATH"], [LDAPINC="failed"])
CFLAGS=$SAVE_CFLAGS
if test [ "x$LDAPINC" != "xfailed" ]; then
break 2
fi
done
STOP_LOOKING_FOR_LDAP="done"
done
if test [ "x$LDAPINC" = "xfailed" ]; then
AC_MSG_ERROR([Could not find LDAP headers.])
fi
STOP_LOOKING_FOR_LDAP=""
while test [ -z $STOP_LOOKING_FOR_LDAP ]; do
dnl See if we already have the paths we need in the environment.
dnl ...but only if --with-ldap was given without a specific path.
if ( test [ "x$lookforldap" = "xyes" ] || test [ "x$lookforauthldap" = "xyes" ] ); then
AC_CHECK_HEADERS([ldap.h],[LDAPLIB="-lldap"], [LDAPLIB="failed"])
if test [ "x$LDAPLIB" != "xfailed" ]; then
break
fi
fi
dnl Explicitly test paths from --with-ldap or configure.in
for TEST_PATH in $ldapprefixes; do
TEST_PATH="$TEST_PATH/lib"
SAVE_CFLAGS=$CFLAGS
dnl The headers might be in a funny place, so we need to use -Ipath
CFLAGS="$CFLAGS -L$TEST_PATH $LDAPINC"
AC_CHECK_HEADERS([ldap.h],[LDAPLIB="-L$TEST_PATH -lldap"], [LDAPLIB="failed"])
CFLAGS=$SAVE_CFLAGS
if test [ "x$LDAPLIB" != "xfailed" ]; then
break 2
fi
done
STOP_LOOKING_FOR_LDAP="done"
done
if test [ "x$LDAPLIB" = "xfailed" ]; then
AC_MSG_ERROR([Could not find LDAP library.])
else
AC_DEFINE([AUTHLDAP], 1, [Define if LDAP will be used.])
AC_SEARCH_LIBS(ldap_initialize, ldap, AC_DEFINE([HAVE_LDAP_INITIALIZE], 1, [ldap_initialize() can be used instead of ldap_init()]))
AC_SUBST(LDAPLIB)
AC_SUBST(LDAPINC)
AUTHALIB="modules/.libs/libauth_ldap.a"
AUTHLTLIB="modules/libauth_ldap.la"
fi
fi
])
AC_DEFUN([DM_CHECK_ZDB], [dnl
AC_ARG_WITH(zdb,[ --with-zdb=PATH path to libzdb base directory (e.g. /usr/local or /usr)],
[lookforzdb="$withval"],[lookforzdb="no"])
if test [ "x$lookforzdb" = "xno" ] ; then
CFLAGS="$CFLAGS -I${prefix}/include/zdb"
else
CFLAGS="$CFLAGS -I${lookforzdb}/include/zdb"
fi
AC_CHECK_HEADERS([URL.h ResultSet.h PreparedStatement.h Connection.h ConnectionPool.h SQLException.h],
[ZDBLIB="-lzdb"],
[ZDBLIB="failed"],
[[
#include <URL.h>
#include <ResultSet.h>
#include <PreparedStatement.h>
#include <Connection.h>
#include <ConnectionPool.h>
#include <SQLException.h>
]])
if test [ "x$ZDBLIB" = "xfailed" ]; then
AC_MSG_ERROR([Could not find ZDB library.])
else
LDFLAGS="$LDFLAGS $ZDBLIB"
fi
])
AC_DEFUN([DM_SET_SQLITECREATE], [dnl
SQLITECREATE=`sed -e 's/\"/\\\"/g' -e 's/^/\"/' -e 's/$/\\\n\" \\\\/' sql/sqlite/create_tables.sqlite`
])
AC_DEFUN([DM_CHECK_MATH], [dnl
AC_CHECK_HEADERS([math.h],[MATHLIB="-lm"], [MATHLIB="failed"])
if test [ "x$MATHLIB" = "xfailed" ]; then
AC_MSG_ERROR([Could not find MATH library.])
else
LDFLAGS="$LDFLAGS $MATHLIB"
fi
])
AC_DEFUN([DM_CHECK_MHASH], [dnl
AC_CHECK_HEADERS([mhash.h],[MHASHLIB="-lmhash"], [MHASHLIB="failed"])
if test [ "x$MHASHLIB" = "xfailed" ]; then
AC_MSG_ERROR([Could not find MHASH library.])
else
LDFLAGS="$LDFLAGS $MHASHLIB"
fi
])
AC_DEFUN([DM_CHECK_EVENT], [
AC_CHECK_HEADERS([event.h], [EVENTLIB="-levent"],[EVENTLIB="failed"], [#include <sys/types.h>])
if test [ "x$EVENTLIB" = "xfailed" ]; then
AC_MSG_ERROR([Could not find EVENT library.])
else
LDFLAGS="$LDFLAGS $EVENTLIB"
fi
])
AC_DEFUN([DM_CHECK_SSL], [
AC_CHECK_HEADERS([openssl/ssl.h], [SSLLIB="-lssl"],[SSLLIB="failed"])
if test [ "x$SSLLIB" = "xfailed" ]; then
AC_MSG_ERROR([Could not find OPENSSL library.])
else
LDFLAGS="$LDFLAGS $SSLLIB"
fi
])
AC_DEFUN([AC_COMPILE_WARNINGS],
[AC_MSG_CHECKING(maximum warning verbosity option)
if test -n "$CXX"; then
if test "$GXX" = "yes"; then
ac_compile_warnings_opt='-Wall'
fi
CXXFLAGS="$CXXFLAGS $ac_compile_warnings_opt"
ac_compile_warnings_msg="$ac_compile_warnings_opt for C++"
fi
if test -n "$CC"; then
if test "$GCC" = "yes"; then
ac_compile_warnings_opt='-W -Wall -Wpointer-arith -Wstrict-prototypes'
fi
CFLAGS="$CFLAGS $ac_compile_warnings_opt"
ac_compile_warnings_msg="$ac_compile_warnings_msg $ac_compile_warnings_opt for C"
fi
AC_MSG_RESULT($ac_compile_warnings_msg)
unset ac_compile_warnings_msg
unset ac_compile_warnings_opt
])
AC_DEFUN([DM_CHECK_GLIB], [dnl
AC_PATH_PROG(glibconfig,pkg-config)
if test [ -z "$glibconfig" ]
then
AC_MSG_ERROR([pkg-config executable not found. Make sure pkg-config is in your path])
else
AC_MSG_CHECKING([GLib headers])
ac_glib_cflags=`${glibconfig} --cflags glib-2.0`
if test -z "$ac_glib_cflags"
then
AC_MSG_RESULT([no])
AC_MSG_ERROR([Unable to locate glib development files])
fi
CFLAGS="$CFLAGS $ac_glib_cflags"
AC_MSG_RESULT([$ac_glib_cflags])
AC_MSG_CHECKING([Glib libraries])
ac_glib_libs=`${glibconfig} --libs glib-2.0`
if test -z "$ac_glib_libs"
then
AC_MSG_RESULT([no])
AC_MSG_ERROR([Unable to locate glib libaries])
fi
ac_glib_minvers="2.16"
AC_MSG_CHECKING([GLib version >= $ac_glib_minvers])
ac_glib_vers=`${glibconfig} --atleast-version=$ac_glib_minvers glib-2.0 && echo yes`
if test -z "$ac_glib_vers"
then
AC_MSG_ERROR([At least GLib version $ac_glib_minvers is required.])
else
AC_MSG_RESULT([$ac_glib_vers])
fi
LDFLAGS="$LDFLAGS $ac_glib_libs"
AC_MSG_RESULT([$ac_glib_libs])
fi
])
AC_DEFUN([DM_CHECK_GMIME], [dnl
AC_PATH_PROG(gmimeconfig,pkg-config)
if test [ -z "$gmimeconfig" ]
then
AC_MSG_ERROR([pkg-config executable not found. Make sure pkg-config is in your path])
else
AC_MSG_CHECKING([GMime headers])
ac_gmime_cflags=`${gmimeconfig} --cflags gmime-2.4`
if test -z "$ac_gmime_cflags"
then
AC_MSG_RESULT([no])
AC_MSG_ERROR([Unable to locate gmime development files])
else
CFLAGS="$CFLAGS $ac_gmime_cflags"
AC_MSG_RESULT([$ac_gmime_cflags])
fi
AC_MSG_CHECKING([GMime libraries])
ac_gmime_libs=`${gmimeconfig} --libs gmime-2.4`
if test -z "$ac_gmime_libs"
then
AC_MSG_RESULT([no])
AC_MSG_ERROR([Unable to locate gmime libaries])
else
LDFLAGS="$LDFLAGS $ac_gmime_libs"
AC_MSG_RESULT([$ac_gmime_libs])
fi
ac_gmime_minvers="2.4.6"
AC_MSG_CHECKING([GMime version >= $ac_gmime_minvers])
ac_gmime_vers=`${gmimeconfig} --atleast-version=$ac_gmime_minvers gmime-2.4 && echo yes`
if test -z "$ac_gmime_vers"
then
AC_MSG_ERROR([At least GMime version $ac_gmime_minvers is required.])
else
AC_MSG_RESULT([$ac_gmime_vers])
fi
fi
])
AC_DEFUN([DM_PATH_CHECK],
[
AC_ARG_WITH(check,
[ --with-check=PATH prefix where check is installed [default=auto]],
[test x"$with_check" = xno && with_check="no"],
[with_check="no"])
if test "x$with_check" != xno; then
min_check_version=ifelse([$1], ,0.8.2,$1)
AC_MSG_CHECKING(for check - version >= $min_check_version)
if test x$with_check = xno; then
AC_MSG_RESULT(disabled)
ifelse([$3], , AC_MSG_ERROR([disabling check is not supported]), [$3])
else
if test "x$with_check" = xyes; then
CHECK_CFLAGS=""
CHECK_LIBS="-lcheck"
else
CHECK_CFLAGS="-I$with_check/include"
CHECK_LIBS="-L$with_check/lib -lcheck"
fi
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $CHECK_CFLAGS"
LIBS="$CHECK_LIBS $LIBS"
rm -f conf.check-test
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <check.h>
int main ()
{
int major, minor, micro;
char *tmp_version;
system ("touch conf.check-test");
/* HP/UX 9 (%@#!) writes to sscanf strings */
tmp_version = strdup("$min_check_version");
if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
printf("%s, bad version string\n", "$min_check_version");
return 1;
}
if ((CHECK_MAJOR_VERSION != check_major_version) ||
(CHECK_MINOR_VERSION != check_minor_version) ||
(CHECK_MICRO_VERSION != check_micro_version))
{
printf("\n*** The check header file (version %d.%d.%d) does not match\n",
CHECK_MAJOR_VERSION, CHECK_MINOR_VERSION, CHECK_MICRO_VERSION);
printf("*** the check library (version %d.%d.%d).\n",
check_major_version, check_minor_version, check_micro_version);
return 1;
}
if ((check_major_version > major) ||
((check_major_version == major) && (check_minor_version > minor)) ||
((check_major_version == major) && (check_minor_version == minor) && (check_micro_version >= micro)))
{
return 0;
}
else
{
printf("\n*** An old version of check (%d.%d.%d) was found.\n",
check_major_version, check_minor_version, check_micro_version);
printf("*** You need a version of check being at least %d.%d.%d.\n", major, minor, micro);
printf("***\n");
printf("*** If you have already installed a sufficiently new version, this error\n");
printf("*** probably means that the wrong copy of the check library and header\n");
printf("*** file is being found. Rerun configure with the --with-check=PATH option\n");
printf("*** to specify the prefix where the correct version was installed.\n");
}
return 1;
}
],, no_check=yes, [echo $ac_n "cross compiling; assumed OK... $ac_c"])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
if test "x$no_check" = x ; then
AC_MSG_RESULT(yes)
ifelse([$2], , :, [$2])
else
AC_MSG_RESULT(no)
if test -f conf.check-test ; then
:
else
echo "*** Could not run check test program, checking why..."
CFLAGS="$CFLAGS $CHECK_CFLAGS"
LIBS="$CHECK_LIBS $LIBS"
AC_TRY_LINK([
#include <stdio.h>
#include <stdlib.h>
#include <check.h>
], , [ echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding check. You'll need to set your"
echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
echo "*** to the installed location Also, make sure you have run ldconfig if that"
echo "*** is required on your system"
echo "***"
echo "*** If you have an old version installed, it is best to remove it, although"
echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
[ echo "*** The test program failed to compile or link. See the file config.log for"
echo "*** the exact error that occured." ])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
CHECK_CFLAGS=""
CHECK_LIBS=""
rm -f conf.check-test
ifelse([$3], , AC_MSG_ERROR([check not found]), [$3])
fi
fi
AC_SUBST(CHECK_CFLAGS)
AC_SUBST(CHECK_LIBS)
rm -f conf.check-test
fi
])
# getopt.m4 serial 12
dnl Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
# The getopt module assume you want GNU getopt, with getopt_long etc,
# rather than vanilla POSIX getopt. This means your your code should
# always include <getopt.h> for the getopt prototypes.
AC_DEFUN([gl_GETOPT_SUBSTITUTE],
[
dnl Modified for DBMail, which does not use the Gnulib getopt.
dnl CFLAGS="$CFLAGS -DUSE_DM_GETOPT"
AC_DEFINE([USE_DM_GETOPT], 1, [Define if our local getopt will be used.])
USE_DM_GETOPT=1
])
AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
[
if test -z "$GETOPT_H"; then
AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
fi
if test -z "$GETOPT_H"; then
AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
fi
dnl BSD getopt_long uses an incompatible method to reset option processing,
dnl and (as of 2004-10-15) mishandles optional option-arguments.
if test -z "$GETOPT_H"; then
AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>])
fi
dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
dnl option string (as of 2005-05-05).
if test -z "$GETOPT_H"; then
AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
[AC_RUN_IFELSE(
[AC_LANG_PROGRAM([#include <getopt.h>],
[[
char *myargv[3];
myargv[0] = "conftest";
myargv[1] = "-+";
myargv[2] = 0;
return getopt (2, myargv, "+a") != '?';
]])],
[gl_cv_func_gnu_getopt=yes],
[gl_cv_func_gnu_getopt=no],
[dnl cross compiling - pessimistically guess based on decls
dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
dnl option string (as of 2005-05-05).
AC_CHECK_DECL([getopt_clip],
[gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
[#include <getopt.h>])])])
if test "$gl_cv_func_gnu_getopt" = "no"; then
GETOPT_H=getopt.h
fi
fi
])
AC_DEFUN([gl_GETOPT_IFELSE],
[
AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
AS_IF([test -n "$GETOPT_H"], [$1], [$2])
])
AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
# Prerequisites of lib/getopt*.
AC_DEFUN([gl_PREREQ_GETOPT],
[
AC_CHECK_DECLS_ONCE([getenv])
])
AC_DEFUN([CMU_SOCKETS], [
save_LIBS="$LIBS"
SOCKETLIB=""
AC_CHECK_FUNC(connect, :,
AC_CHECK_LIB(nsl, gethostbyname,
SOCKETLIB="-lnsl $SOCKETLIB")
AC_CHECK_LIB(socket, connect,
SOCKETLIB="-lsocket $SOCKETLIB")
)
LIBS="$SOCKETLIB $save_LIBS"
AC_CHECK_FUNC(res_search, :,
AC_CHECK_LIB(resolv, res_search,
SOCKETLIB="-lresolv $SOCKETLIB")
)
LIBS="$SOCKETLIB $save_LIBS"
AC_CHECK_FUNCS(dn_expand dns_lookup)
LIBS="$save_LIBS"
AC_SUBST(SOCKETLIB)
])