source4/libads/config.m4

   1 ########################################################
   2 # Compile with LDAP support?
   3
   4 LDAP_LIBS=""
   5 with_ldap_support=auto
   6 AC_MSG_CHECKING([for LDAP support])
   7
   8 AC_ARG_WITH(ldap,
   9 [  --with-ldap             LDAP support (default yes)],
  10 [ case "$withval" in
  11     yes|no)
  12         with_ldap_support=$withval
  13         ;;
  14   esac ])
  15
  16 AC_MSG_RESULT($with_ldap_support)
  17
  18 if test x"$with_ldap_support" != x"no"; then
  19
  20   ##################################################################
  21   # first test for ldap.h and lber.h
  22   # (ldap.h is required for this test)
  23   AC_CHECK_HEADERS(ldap.h lber.h)
  24
  25   if test x"$ac_cv_header_ldap_h" != x"yes"; then
  26         if test x"$with_ldap_support" = x"yes"; then
  27          AC_MSG_ERROR(ldap.h is needed for LDAP support)
  28         else
  29          AC_MSG_WARN(ldap.h is needed for LDAP support)
  30         fi
  31
  32         with_ldap_support=no
  33   fi
  34 fi
  35
  36 if test x"$with_ldap_support" != x"no"; then
  37   ac_save_LIBS=$LIBS
  38
  39   ##################################################################
  40   # we might need the lber lib on some systems. To avoid link errors
  41   # this test must be before the libldap test
  42   AC_CHECK_LIB_EXT(lber, LDAP_LIBS, ber_scanf)
  43
  44   ########################################################
  45   # now see if we can find the ldap libs in standard paths
  46   AC_CHECK_LIB_EXT(ldap, LDAP_LIBS, ldap_init)
  47
  48   AC_CHECK_FUNC_EXT(ldap_domain2hostlist,$LDAP_LIBS)
  49
  50   ########################################################
  51   # If we have LDAP, does it's rebind procedure take 2 or 3 arguments?
  52   # Check found in pam_ldap 145.
  53   AC_CHECK_FUNC_EXT(ldap_set_rebind_proc,$LDAP_LIBS)
  54
  55   LIBS="$LIBS $LDAP_LIBS"
  56   AC_CACHE_CHECK(whether ldap_set_rebind_proc takes 3 arguments, smb_ldap_cv_ldap_set_rebind_proc, [
  57     AC_TRY_COMPILE([
  58         #include <lber.h>
  59         #include <ldap.h>],
  60         [ldap_set_rebind_proc(0, 0, 0);],
  61         [smb_ldap_cv_ldap_set_rebind_proc=3],
  62         [smb_ldap_cv_ldap_set_rebind_proc=2]
  63     )
  64   ])
  65
  66   AC_DEFINE_UNQUOTED(LDAP_SET_REBIND_PROC_ARGS, $smb_ldap_cv_ldap_set_rebind_proc, [Number of arguments to ldap_set_rebind_proc])
  67
  68   AC_CHECK_FUNC_EXT(ldap_initialize,$LDAP_LIBS)
  69
  70   if test x"$ac_cv_lib_ext_ldap_ldap_init" = x"yes" -a x"$ac_cv_func_ext_ldap_domain2hostlist" = x"yes"; then
  71     AC_DEFINE(HAVE_LDAP,1,[Whether ldap is available])
  72     with_ldap_support=yes
  73     AC_MSG_CHECKING(whether LDAP support is used)
  74     AC_MSG_RESULT(yes)
  75     SMB_EXT_LIB_ENABLE(LDAP,YES)
  76   else
  77     if test x"$with_ldap_support" = x"yes"; then
  78         AC_MSG_ERROR(libldap is needed for LDAP support)
  79     else
  80         AC_MSG_WARN(libldap is needed for LDAP support)
  81     fi
  82
  83     LDAP_LIBS=""
  84     with_ldap_support=no
  85   fi
  86   LIBS=$ac_save_LIBS
  87 fi
  88
  89 #################################################
  90 # KRB5 support
  91 KRB5_CFLAGS=""
  92 KRB5_CPPFLAGS=""
  93 KRB5_LDFLAGS=""
  94 KRB5_LIBS=""
  95 with_krb5_support=auto
  96 krb5_withval=auto
  97 AC_MSG_CHECKING([for KRB5 support])
  98
  99 # Do no harm to the values of CFLAGS and LIBS while testing for
 100 # Kerberos support.
 101 AC_ARG_WITH(krb5,
 102 [  --with-krb5=base-dir    Locate Kerberos 5 support (default=auto)],
 103         [ case "$withval" in
 104                 no)
 105                         with_krb5_support=no
 106                         AC_MSG_RESULT(no)
 107                         krb5_withval=no
 108                         ;;
 109                 yes)
 110                         with_krb5_support=yes
 111                         AC_MSG_RESULT(yes)
 112                         krb5_withval=yes
 113                         ;;
 114                 auto)
 115                         with_krb5_support=auto
 116                         AC_MSG_RESULT(auto)
 117                         krb5_withval=auto
 118                         ;;
 119                 *)
 120                         with_krb5_support=yes
 121                         AC_MSG_RESULT(yes)
 122                         krb5_withval=$withval
 123                         ;;
 124         esac ],
 125         AC_MSG_RESULT($with_krb5_support)
 126 )
 127
 128 if test x$with_krb5_support != x"no"; then
 129         FOUND_KRB5=no
 130
 131         #################################################
 132         # check for krb5-config from recent MIT and Heimdal kerberos 5
 133         AC_PATH_PROG(KRB5_CONFIG, krb5-config)
 134         AC_MSG_CHECKING(for working krb5-config)
 135         if test -x "$KRB5_CONFIG"; then
 136                 ac_save_CFLAGS=$CFLAGS
 137                 CFLAGS="";export CFLAGS
 138                 ac_save_LDFLAGS=$LDFLAGS
 139                 LDFLAGS="";export LDFLAGS
 140                 KRB5_LIBS="`$KRB5_CONFIG --libs gssapi`"
 141                 KRB5_CFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
 142                 KRB5_CPPFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
 143                 CFLAGS=$ac_save_CFLAGS;export CFLAGS
 144                 LDFLAGS=$ac_save_LDFLAGS;export LDFLAGS
 145                 FOUND_KRB5=yes
 146                 AC_MSG_RESULT(yes)
 147         else
 148                 AC_MSG_RESULT(no. Fallback to previous krb5 detection strategy)
 149         fi
 150
 151         if test x$FOUND_KRB5 != x"yes"; then
 152                 #################################################
 153                 # check for location of Kerberos 5 install
 154                 AC_MSG_CHECKING(for kerberos 5 install path)
 155                 case "$krb5_withval" in
 156                         no)
 157                                 AC_MSG_RESULT(no krb5-path given)
 158                                 ;;
 159                         yes)
 160                                 AC_MSG_RESULT(/usr)
 161                                 FOUND_KRB5=yes
 162                                 ;;
 163                         *)
 164                                 AC_MSG_RESULT($krb5_withval)
 165                                 KRB5_CFLAGS="-I$krb5_withval/include"
 166                                 KRB5_CPPFLAGS="-I$krb5_withval/include"
 167                                 KRB5_LDFLAGS="-L$krb5_withval/lib"
 168                                 FOUND_KRB5=yes
 169                                 ;;
 170                 esac
 171         fi
 172
 173         if test x$FOUND_KRB5 != x"yes"; then
 174                 #################################################
 175                 # see if this box has the SuSE location for the heimdal krb implementation
 176                 AC_MSG_CHECKING(for /usr/include/heimdal)
 177                 if test -d /usr/include/heimdal; then
 178                         if test -f /usr/lib/heimdal/lib/libkrb5.a; then
 179                                 KRB5_CFLAGS="-I/usr/include/heimdal"
 180                                 KRB5_CPPFLAGS="-I/usr/include/heimdal"
 181                                 KRB5_LDFLAGS="-L/usr/lib/heimdal/lib"
 182                                 AC_MSG_RESULT(yes)
 183                         else
 184                                 KRB5_CFLAGS="-I/usr/include/heimdal"
 185                                 KRB5_CPPFLAGS="-I/usr/include/heimdal"
 186                                 AC_MSG_RESULT(yes)
 187                         fi
 188                 else
 189                         AC_MSG_RESULT(no)
 190                 fi
 191         fi
 192
 193         if test x$FOUND_KRB5 != x"yes"; then
 194                 #################################################
 195                 # see if this box has the RedHat location for kerberos
 196                 AC_MSG_CHECKING(for /usr/kerberos)
 197                 if test -d /usr/kerberos -a -f /usr/kerberos/lib/libkrb5.a; then
 198                         KRB5_LDFLAGS="-L/usr/kerberos/lib"
 199                         KRB5_CFLAGS="-I/usr/kerberos/include"
 200                         KRB5_CPPFLAGS="-I/usr/kerberos/include"
 201                         AC_MSG_RESULT(yes)
 202                 else
 203                         AC_MSG_RESULT(no)
 204                 fi
 205         fi
 206
 207         ac_save_CFLAGS=$CFLAGS
 208         ac_save_CPPFLAGS=$CPPFLAGS
 209         ac_save_LDFLAGS=$LDFLAGS
 210
 211         #MIT needs this, to let us see 'internal' parts of the headers we use
 212         KRB5_CFLAGS="${KRB5_CFLAGS} -DKRB5_PRIVATE -DKRB5_DEPRECATED"
 213
 214         CFLAGS="$CFLAGS $KRB5_CFLAGS"
 215         CPPFLAGS="$CPPFLAGS $KRB5_CPPFLAGS"
 216         LDFLAGS="$LDFLAGS $KRB5_LDFLAGS"
 217
 218         KRB5_LIBS="$KRB5_LDFLAGS $KRB5_LIBS"
 219
 220         # now check for krb5.h. Some systems have the libraries without the headers!
 221         # note that this check is done here to allow for different kerberos
 222         # include paths
 223         AC_CHECK_HEADERS(krb5.h)
 224
 225         if test x"$ac_cv_header_krb5_h" = x"no"; then
 226                 # Give a warning if KRB5 support was not explicitly requested,
 227                 # i.e with_krb5_support = auto, otherwise die with an error.
 228                 if test x"$with_krb5_support" = x"yes"; then
 229                         AC_MSG_ERROR([KRB5 cannot be supported without krb5.h])
 230                 else
 231                         AC_MSG_WARN([KRB5 cannot be supported without krb5.h])
 232                 fi
 233                 # Turn off AD support and restore CFLAGS and LIBS variables
 234                 with_krb5_support="no"
 235         fi
 236
 237         CFLAGS=$ac_save_CFLAGS
 238         CPPFLAGS=$ac_save_CPPFLAGS
 239         LDFLAGS=$ac_save_LDFLAGS
 240 fi
 241
 242 # Now we have determined whether we really want KRB5 support
 243
 244 if test x"$with_krb5_support" != x"no"; then
 245         ac_save_CFLAGS=$CFLAGS
 246         ac_save_CPPFLAGS=$CPPFLAGS
 247         ac_save_LDFLAGS=$LDFLAGS
 248         ac_save_LIBS=$LIBS
 249
 250         CFLAGS="$CFLAGS $KRB5_CFLAGS"
 251         CPPFLAGS="$CPPFLAGS $KRB5_CPPFLAGS"
 252         LDFLAGS="$LDFLAGS $KRB5_LDFLAGS"
 253
 254         # now check for gssapi headers.  This is also done here to allow for
 255         # different kerberos include paths
 256         AC_CHECK_HEADERS(gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h com_err.h)
 257
 258         ##################################################################
 259         # we might need the k5crypto and com_err libraries on some systems
 260         AC_CHECK_LIB_EXT(com_err, KRB5_LIBS, _et_list)
 261         AC_CHECK_LIB_EXT(k5crypto, KRB5_LIBS, krb5_encrypt_data)
 262
 263         # Heimdal checks.
 264         AC_CHECK_LIB_EXT(crypto, KRB5_LIBS, des_set_key)
 265         AC_CHECK_LIB_EXT(asn1, KRB5_LIBS, copy_Authenticator)
 266         AC_CHECK_LIB_EXT(roken, KRB5_LIBS, roken_getaddrinfo_hostspec)
 267
 268         # Heimdal checks. On static Heimdal gssapi must be linked before krb5.
 269         AC_CHECK_LIB_EXT(gssapi, KRB5_LIBS, gss_display_status,[],[],
 270                                 AC_DEFINE(HAVE_GSSAPI,1,[Whether GSSAPI is available]))
 271
 272         ########################################################
 273         # now see if we can find the krb5 libs in standard paths
 274         # or as specified above
 275         AC_CHECK_LIB_EXT(krb5, KRB5_LIBS, krb5_mk_req_extended)
 276         AC_CHECK_LIB_EXT(krb5, KRB5_LIBS, krb5_kt_compare)
 277
 278         ########################################################
 279         # now see if we can find the gssapi libs in standard paths
 280         AC_CHECK_LIB_EXT(gssapi_krb5, KRB5_LIBS,gss_display_status,[],[],
 281                 AC_DEFINE(HAVE_GSSAPI,1,[Whether GSSAPI is available]))
 282
 283         AC_CHECK_FUNC_EXT(krb5_set_real_time, $KRB5_LIBS)
 284         AC_CHECK_FUNC_EXT(krb5_set_default_in_tkt_etypes, $KRB5_LIBS)
 285         AC_CHECK_FUNC_EXT(krb5_set_default_tgs_ktypes, $KRB5_LIBS)
 286         AC_CHECK_FUNC_EXT(krb5_principal2salt, $KRB5_LIBS)
 287         AC_CHECK_FUNC_EXT(krb5_use_enctype, $KRB5_LIBS)
 288         AC_CHECK_FUNC_EXT(krb5_string_to_key, $KRB5_LIBS)
 289         AC_CHECK_FUNC_EXT(krb5_get_pw_salt, $KRB5_LIBS)
 290         AC_CHECK_FUNC_EXT(krb5_string_to_key_salt, $KRB5_LIBS)
 291         AC_CHECK_FUNC_EXT(krb5_auth_con_setkey, $KRB5_LIBS)
 292         AC_CHECK_FUNC_EXT(krb5_auth_con_setuseruserkey, $KRB5_LIBS)
 293         AC_CHECK_FUNC_EXT(krb5_locate_kdc, $KRB5_LIBS)
 294         AC_CHECK_FUNC_EXT(krb5_get_permitted_enctypes, $KRB5_LIBS)
 295         AC_CHECK_FUNC_EXT(krb5_get_default_in_tkt_etypes, $KRB5_LIBS)
 296         AC_CHECK_FUNC_EXT(krb5_free_ktypes, $KRB5_LIBS)
 297         AC_CHECK_FUNC_EXT(krb5_free_data_contents, $KRB5_LIBS)
 298         AC_CHECK_FUNC_EXT(krb5_principal_get_comp_string, $KRB5_LIBS)
 299         AC_CHECK_FUNC_EXT(krb5_free_unparsed_name, $KRB5_LIBS)
 300         AC_CHECK_FUNC_EXT(krb5_free_keytab_entry_contents, $KRB5_LIBS)
 301         AC_CHECK_FUNC_EXT(krb5_kt_free_entry, $KRB5_LIBS)
 302         AC_CHECK_FUNC_EXT(krb5_verify_checksum, $KRB5_LIBS)
 303         AC_CHECK_FUNC_EXT(krb5_c_verify_checksum, $KRB5_LIBS)
 304         AC_CHECK_FUNC_EXT(krb5_ticket_get_authorization_data_type, $KRB5_LIBS)
 305         AC_CHECK_FUNC_EXT(krb5_krbhst_get_addrinfo, $KRB5_LIBS)
 306
 307         LIBS="$LIBS $KRB5_LIBS"
 308
 309         AC_CACHE_CHECK([for addrtype in krb5_address],
 310                 samba_cv_HAVE_ADDRTYPE_IN_KRB5_ADDRESS,[
 311                 AC_TRY_COMPILE([#include <krb5.h>],
 312                 [krb5_address kaddr; kaddr.addrtype = ADDRTYPE_INET;],
 313                 samba_cv_HAVE_ADDRTYPE_IN_KRB5_ADDRESS=yes,
 314                 samba_cv_HAVE_ADDRTYPE_IN_KRB5_ADDRESS=no)])
 315         if test x"$samba_cv_HAVE_ADDRTYPE_IN_KRB5_ADDRESS" = x"yes"; then
 316                 AC_DEFINE(HAVE_ADDRTYPE_IN_KRB5_ADDRESS,1,
 317                 [Whether the krb5_address struct has a addrtype property])
 318         fi
 319
 320         AC_CACHE_CHECK([for addr_type in krb5_address],
 321                 samba_cv_HAVE_ADDR_TYPE_IN_KRB5_ADDRESS,[
 322                 AC_TRY_COMPILE([#include <krb5.h>],
 323                 [krb5_address kaddr; kaddr.addr_type = KRB5_ADDRESS_INET;],
 324                 samba_cv_HAVE_ADDR_TYPE_IN_KRB5_ADDRESS=yes,
 325                 samba_cv_HAVE_ADDR_TYPE_IN_KRB5_ADDRESS=no)])
 326         if test x"$samba_cv_HAVE_ADDR_TYPE_IN_KRB5_ADDRESS" = x"yes"; then
 327                 AC_DEFINE(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS,1,
 328                 [Whether the krb5_address struct has a addr_type property])
 329         fi
 330
 331         AC_CACHE_CHECK([for enc_part2 in krb5_ticket],
 332                 samba_cv_HAVE_KRB5_TKT_ENC_PART2,[
 333                 AC_TRY_COMPILE([#include <krb5.h>],
 334                 [krb5_ticket tkt; tkt.enc_part2->authorization_data[0]->contents = NULL;],
 335                 samba_cv_HAVE_KRB5_TKT_ENC_PART2=yes,
 336                 samba_cv_HAVE_KRB5_TKT_ENC_PART2=no)])
 337         if test x"$samba_cv_HAVE_KRB5_TKT_ENC_PART2" = x"yes"; then
 338                 AC_DEFINE(HAVE_KRB5_TKT_ENC_PART2,1,
 339                 [Whether the krb5_ticket struct has a enc_part2 property])
 340         fi
 341
 342         AC_CACHE_CHECK([for keyvalue in krb5_keyblock],
 343                 samba_cv_HAVE_KRB5_KEYBLOCK_KEYVALUE,[
 344                 AC_TRY_COMPILE([#include <krb5.h>],
 345                 [krb5_keyblock key; key.keyvalue.data = NULL;],
 346                 samba_cv_HAVE_KRB5_KEYBLOCK_KEYVALUE=yes,
 347                 samba_cv_HAVE_KRB5_KEYBLOCK_KEYVALUE=no)])
 348         if test x"$samba_cv_HAVE_KRB5_KEYBLOCK_KEYVALUE" = x"yes"; then
 349                 AC_DEFINE(HAVE_KRB5_KEYBLOCK_KEYVALUE,1,
 350                 [Whether the krb5_keyblock struct has a keyvalue property])
 351         fi
 352
 353         AC_CACHE_CHECK([for ENCTYPE_ARCFOUR_HMAC_MD5],
 354                 samba_cv_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5,[
 355                 AC_TRY_COMPILE([#include <krb5.h>],
 356                 [krb5_enctype enctype; enctype = ENCTYPE_ARCFOUR_HMAC_MD5;],
 357                 samba_cv_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5=yes,
 358                 samba_cv_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5=no)])
 359         AC_CACHE_CHECK([for KEYTYPE_ARCFOUR_56],
 360                  samba_cv_HAVE_KEYTYPE_ARCFOUR_56,[
 361                 AC_TRY_COMPILE([#include <krb5.h>],
 362                 [krb5_keytype keytype; keytype = KEYTYPE_ARCFOUR_56;],
 363                 samba_cv_HAVE_KEYTYPE_ARCFOUR_56=yes,
 364                 samba_cv_HAVE_KEYTYPE_ARCFOUR_56=no)])
 365         # Heimdals with KEYTYPE_ARCFOUR but not KEYTYPE_ARCFOUR_56 are broken
 366         # w.r.t. arcfour and windows, so we must not enable it here
 367         if test x"$samba_cv_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5" = x"yes" -a\
 368            x"$samba_cv_HAVE_KEYTYPE_ARCFOUR_56" = x"yes"; then
 369                 AC_DEFINE(HAVE_ENCTYPE_ARCFOUR_HMAC_MD5,1,
 370                 [Whether the ENCTYPE_ARCFOUR_HMAC_MD5 key type is available])
 371         fi
 372
 373         AC_CACHE_CHECK([for AP_OPTS_USE_SUBKEY],
 374                 samba_cv_HAVE_AP_OPTS_USE_SUBKEY,[
 375                 AC_TRY_COMPILE([#include <krb5.h>],
 376                 [krb5_flags ap_options; ap_options = AP_OPTS_USE_SUBKEY;],
 377                 samba_cv_HAVE_AP_OPTS_USE_SUBKEY=yes,
 378                 samba_cv_HAVE_AP_OPTS_USE_SUBKEY=no)])
 379         if test x"$samba_cv_HAVE_AP_OPTS_USE_SUBKEY" = x"yes"; then
 380                 AC_DEFINE(HAVE_AP_OPTS_USE_SUBKEY,1,
 381                 [Whether the AP_OPTS_USE_SUBKEY ap option is available])
 382         fi
 383
 384         AC_CACHE_CHECK([for KV5M_KEYTAB],
 385                 samba_cv_HAVE_KV5M_KEYTAB,[
 386                 AC_TRY_COMPILE([#include <krb5.h>],
 387                 [krb5_keytab_entry entry; entry.magic = KV5M_KEYTAB;],
 388                 samba_cv_HAVE_KV5M_KEYTAB=yes,
 389                 samba_cv_HAVE_KV5M_KEYTAB=no)])
 390         if test x"$samba_cv_HAVE_KV5M_KEYTAB" = x"yes"; then
 391                 AC_DEFINE(HAVE_KV5M_KEYTAB,1,
 392                 [Whether the KV5M_KEYTAB option is available])
 393         fi
 394
 395         AC_CACHE_CHECK([for the krb5_princ_component macro],
 396                 samba_cv_HAVE_KRB5_PRINC_COMPONENT,[
 397                 AC_TRY_LINK([#include <krb5.h>],
 398                 [const krb5_data *pkdata; krb5_context context; krb5_principal principal;
 399                         pkdata = krb5_princ_component(context, principal, 0);],
 400                 samba_cv_HAVE_KRB5_PRINC_COMPONENT=yes,
 401                 samba_cv_HAVE_KRB5_PRINC_COMPONENT=no)])
 402         if test x"$samba_cv_HAVE_KRB5_PRINC_COMPONENT" = x"yes"; then
 403                 AC_DEFINE(HAVE_KRB5_PRINC_COMPONENT,1,
 404                [Whether krb5_princ_component is available])
 405         fi
 406
 407         AC_CACHE_CHECK([for key in krb5_keytab_entry],
 408                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEY,[
 409                 AC_TRY_COMPILE([#include <krb5.h>],
 410                 [krb5_keytab_entry entry; krb5_keyblock e; entry.key = e;],
 411                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEY=yes,
 412                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEY=no)])
 413         if test x"$samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEY" = x"yes"; then
 414                 AC_DEFINE(HAVE_KRB5_KEYTAB_ENTRY_KEY,1,
 415                 [Whether krb5_keytab_entry has key member])
 416         fi
 417
 418         AC_CACHE_CHECK([for keyblock in krb5_keytab_entry],
 419                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK,[
 420                 AC_TRY_COMPILE([#include <krb5.h>],
 421                 [krb5_keytab_entry entry; entry.keyblock.keytype = 0;],
 422                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK=yes,
 423                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK=no)])
 424         if test x"$samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK" = x"yes"; then
 425                 AC_DEFINE(HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK,1,
 426                 [Whether krb5_keytab_entry has keyblock member])
 427         fi
 428
 429         AC_CACHE_CHECK([for WRFILE: keytab support],
 430                 samba_cv_HAVE_WRFILE_KEYTAB,[
 431                 AC_TRY_RUN([
 432                 #include<krb5.h>
 433                 main()
 434                 {
 435                         krb5_context context;
 436                         krb5_keytab keytab;
 437                         krb5_init_context(&context);
 438                         if (krb5_kt_resolve(context, "WRFILE:api", &keytab))
 439                                 exit(0);
 440                         exit(1);
 441                 }],
 442                 samba_cv_HAVE_WRFILE_KEYTAB=no,
 443                 samba_cv_HAVE_WRFILE_KEYTAB=yes)])
 444         if test x"$samba_cv_HAVE_WRFILE_KEYTAB" = x"yes"; then
 445                 AC_DEFINE(HAVE_WRFILE_KEYTAB,1,
 446                 [Whether the WRFILE:-keytab is supported])
 447         fi
 448
 449         AC_CACHE_CHECK([for krb5_princ_realm returns krb5_realm or krb5_data],
 450                samba_cv_KRB5_PRINC_REALM_RETURNS_REALM,[
 451                 AC_TRY_COMPILE([#include <krb5.h>],
 452                 [krb5_context context;krb5_principal principal;krb5_realm realm;
 453                         realm = *krb5_princ_realm(context, principal);],
 454                 samba_cv_KRB5_PRINC_REALM_RETURNS_REALM=yes,
 455                 samba_cv_KRB5_PRINC_REALM_RETURNS_REALM=no)])
 456         if test x"$samba_cv_KRB5_PRINC_REALM_RETURNS_REALM" = x"yes"; then
 457                 AC_DEFINE(KRB5_PRINC_REALM_RETURNS_REALM,1,
 458                 [Whether krb5_princ_realm returns krb5_realm or krb5_data])
 459         fi
 460
 461         if test x"$ac_cv_lib_ext_krb5_krb5_mk_req_extended" = x"yes"; then
 462                 AC_DEFINE(HAVE_KRB5,1,[Whether to have KRB5 support])
 463                 AC_MSG_CHECKING(whether KRB5 support is used)
 464                 SMB_EXT_LIB_ENABLE(KRB5,YES)
 465                 AC_MSG_RESULT(yes)
 466         else
 467                 if test x"$with_krb5_support" = x"yes"; then
 468                         AC_MSG_ERROR(a working krb5 library is needed for KRB5 support)
 469                 else
 470                         AC_MSG_WARN(a working krb5 library is needed for KRB5 support)
 471                 fi
 472                 KRB5_CFLAGS=""
 473                 KRB5_CPPFLAGS=""
 474                 KRB5_LDFLAGS=""
 475                 KRB5_LIBS=""
 476                 with_krb5_support=no
 477         fi
 478
 479         CFLAGS=$ac_save_CFLAGS
 480         CPPFLAGS=$ac_save_CPPFLAGS
 481         LDFLAGS=$ac_save_LDFLAGS
 482         LIBS="$ac_save_LIBS"
 483
 484         # as a nasty hack add the krb5 stuff to the global vars,
 485         # at some point this should not be needed anymore when the build system
 486         # can handle that alone
 487         CFLAGS="$CFLAGS $KRB5_CFLAGS"
 488         CPPFLAGS="$CPPFLAGS $KRB5_CPPFLAGS"
 489         LDFLAGS="$LDFLAGS $KRB5_LDFLAGS"
 490 fi
 491
 492 SMB_EXT_LIB(LDAP,[${LDAP_LIBS}],[${LDAP_CFLAGS}],[${LDAP_CPPFLAGS}],[${LDAP_LDFLAGS}])
 493 SMB_EXT_LIB(KRB5,[${KRB5_LIBS}],[${KRB5_CFLAGS}],[${KRB5_CPPFLAGS}],[${KRB5_LDFLAGS}])