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gnupg/m4/ldap.m4
2005-03-17 04:05:14 +00:00

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dnl Check for LDAP
dnl Copyright (C) 2005 Free Software Foundation, Inc.
dnl
dnl This file is free software, distributed under the terms of the GNU
dnl General Public License. As a special exception to the GNU General
dnl Public License, this file may be distributed as part of a program
dnl that contains a configuration script generated by Autoconf, under
dnl the same distribution terms as the rest of that program.
dnl
dnl Defines HAVE_LIBUSB to 1 if a working libusb setup is found, and sets
dnl @LIBUSB@ to the necessary libraries. HAVE_USB_GET_BUSSES is set if
dnl usb_get_busses() exists.
AC_DEFUN([GNUPG_CHECK_LDAP],
[
# Try and link a LDAP test program to weed out unusable LDAP
# libraries. -lldap [-llber [-lresolv]] is for older OpenLDAPs.
# OpenLDAP, circa 1999, was terrible with creating weird dependencies.
# This seems to have all been resolved, so I'm simplifying this code
# significantly. If all else fails, the user can play
# guess-the-dependency by using something like ./configure
# LDAPLIBS="-Lfoo -lbar"
AC_ARG_WITH(ldap,
AC_HELP_STRING([--with-ldap=DIR],[look for the LDAP library in DIR]),
[
if test -d "$withval" ; then
CPPFLAGS="${CPPFLAGS} -I$withval/include"
LDFLAGS="${LDFLAGS} -L$withval/lib"
fi
])
for MY_LDAPLIBS in ${LDAPLIBS+"$LDAPLIBS"} "-lldap" "-lldap -llber" "-lldap -llber -lresolv" "-lwldap32"; do
_ldap_save_libs=$LIBS
LIBS="$MY_LDAPLIBS $1 $LIBS"
AC_MSG_CHECKING([whether LDAP via \"$MY_LDAPLIBS\" is present and sane])
AC_TRY_LINK([
#ifdef _WIN32
#include <winsock2.h>
#include <winldap.h>
#else
#include <ldap.h>
#endif
],[ldap_open("foobar",1234);],
[gnupg_cv_func_ldap_init=yes],[gnupg_cv_func_ldap_init=no])
AC_MSG_RESULT([$gnupg_cv_func_ldap_init])
if test $gnupg_cv_func_ldap_init = no; then
AC_MSG_CHECKING([whether I can make LDAP be sane with lber.h])
AC_TRY_LINK([#include <lber.h>
#include <ldap.h>],[ldap_open("foobar",1234);],
[gnupg_cv_func_ldaplber_init=yes],[gnupg_cv_func_ldaplber_init=no])
AC_MSG_RESULT([$gnupg_cv_func_ldaplber_init])
fi
if test "$gnupg_cv_func_ldaplber_init" = yes ; then
AC_DEFINE(NEED_LBER_H,1,[Define if the LDAP library requires including lber.h before ldap.h])
fi
if test "$gnupg_cv_func_ldap_init" = yes || \
test "$gnupg_cv_func_ldaplber_init" = yes ; then
LDAPLIBS=$MY_LDAPLIBS
GPGKEYS_LDAP="gpgkeys_ldap$EXEEXT"
AC_CHECK_FUNCS(ldap_get_option ldap_set_option ldap_start_tls_s)
if test "$ac_cv_func_ldap_get_option" != yes ; then
AC_MSG_CHECKING([whether LDAP supports ld_errno])
AC_TRY_LINK([#include <ldap.h>],[LDAP *ldap; ldap->ld_errno;],
[gnupg_cv_func_ldap_ld_errno=yes],
[gnupg_cv_func_ldap_ld_errno=no])
AC_MSG_RESULT([$gnupg_cv_func_ldap_ld_errno])
if test "$gnupg_cv_func_ldap_ld_errno" = yes ; then
AC_DEFINE(HAVE_LDAP_LD_ERRNO,1,[Define if the LDAP library supports ld_errno])
fi
fi
fi
LIBS=$_ldap_save_libs
if test "$GPGKEYS_LDAP" != "" ; then break; fi
done
AC_SUBST(GPGKEYS_LDAP)
AC_SUBST(LDAPLIBS)
])dnl