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dnl EVO_LDAP_CHECK(default)
dnl Add --with-openldap and --with-static-ldap options. --with-openldap
dnl defaults to the given value if not specified. If LDAP support is
dnl configured, HAVE_LDAP will be defined and the automake conditional
dnl ENABLE_LDAP will be set. LDAP_CFLAGS and LDAP_LIBS will be set
dnl appropriately.
#serial 0.1
AC_DEFUN([EVO_LDAP_CHECK],[
    default="$1"
    AC_ARG_WITH([openldap],
        [AS_HELP_STRING([--with-openldap],
        [Enable LDAP support in evolution])])
    AC_ARG_WITH([static-ldap],
        [AS_HELP_STRING([--with-static-ldap],
        [Link LDAP support statically into evolution])])
    AC_CACHE_CHECK([for OpenLDAP], [ac_cv_with_openldap], [ac_cv_with_openldap="${with_openldap:=$default}"])
    case $ac_cv_with_openldap in
    no|"")
        with_openldap=no
        ;;
    yes)
        with_openldap=/usr
        ;;
    *)
        with_openldap=$ac_cv_with_openldap
        LDAP_CFLAGS="-I$ac_cv_with_openldap/include"
        LDAP_LDFLAGS="-L$ac_cv_with_openldap/lib"
        ;;
    esac

    if test "$with_openldap" != no; then
        AC_DEFINE(HAVE_LDAP,1,[Define if you have LDAP support])

        case $with_static_ldap in
        no|"")
            with_static_ldap=no
            ;;
        *)
            with_static_ldap=yes
            ;;
        esac

        AC_CACHE_CHECK([if OpenLDAP is version 2.x], [ac_cv_openldap_version2], [
            CPPFLAGS_save="$CPPFLAGS"
            CPPFLAGS="$CPPFLAGS $LDAP_CFLAGS"
            AC_EGREP_CPP(yes, [
                #include "ldap.h"
                #if LDAP_VENDOR_VERSION > 20000
                yes
                #endif
            ], [ac_cv_openldap_version2=yes], [ac_cv_openldap_version2=no])
            CPPFLAGS="$CPPFLAGS_save"
        ])
        if test "$ac_cv_openldap_version2" = no; then
            AC_MSG_ERROR([evolution requires OpenLDAP version >= 2])
        fi

        AC_CHECK_LIB(resolv, res_query, [LDAP_LIBS="-lresolv"])
        AC_CHECK_LIB(socket, bind, [LDAP_LIBS="$LDAP_LIBS -lsocket"])
        AC_CHECK_LIB(nsl, gethostbyaddr, [LDAP_LIBS="$LDAP_LIBS -lnsl"])
        AC_CHECK_LIB(lber, ber_get_tag, [
            if test "$with_static_ldap" = "yes"; then
                LDAP_LIBS="$with_openldap/lib/liblber.a $LDAP_LIBS"

                # libldap might depend on OpenSSL... We need to pull
                # in the dependency libs explicitly here since we're
                # not using libtool for the configure test.
                if test -f $with_openldap/lib/libldap.la; then
                    LDAP_LIBS="`. $with_openldap/lib/libldap.la; echo $dependency_libs` $LDAP_LIBS"
                fi
            else
                LDAP_LIBS="-llber $LDAP_LIBS"
            fi
            AC_CHECK_LIB(ldap, ldap_open, [
                    if test $with_static_ldap = "yes"; then
                        LDAP_LIBS="$with_openldap/lib/libldap.a $LDAP_LIBS"
                    else
                        LDAP_LIBS="-lldap $LDAP_LIBS"
                    fi],
                [LDAP_LIBS=""], [$LDAP_LDFLAGS $LDAP_LIBS])
            LDAP_LIBS="$LDAP_LDFLAGS $LDAP_LIBS"
        ], [LDAP_LIBS=""], [$LDAP_LDFLAGS $LDAP_LIBS])

        if test -z "$LDAP_LIBS"; then
            AC_MSG_ERROR([could not find OpenLDAP libraries])
        fi

        AC_SUBST(LDAP_CFLAGS)
        AC_SUBST(LDAP_LIBS)
    fi
    AM_CONDITIONAL(ENABLE_LDAP, test "$with_openldap" != "no")
])