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_withval/krb5-config)
 134         AC_MSG_CHECKING(for working $krb5_withval/krb5-config)
 135         if test -x "$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=$ac_save_LDFLAGS;export LDFLAGS
 145                 FOUND_KRB5=yes
 146                 AC_MSG_RESULT(yes)
 147         else
 148                 AC_MSG_RESULT(no. Fallback to finding krb5-config in path)
 149         fi
 150
 151         if test x$FOUND_KRB5 != x"yes"; then
 152                 #################################################
 153                 # check for krb5-config from recent MIT and Heimdal kerberos 5
 154                 AC_PATH_PROG(KRB5_CONFIG, krb5-config)
 155                 AC_MSG_CHECKING(for working krb5-config)
 156                 if test -x "$KRB5_CONFIG"; then
 157                         ac_save_CFLAGS=$CFLAGS
 158                         CFLAGS="";export CFLAGS
 159                         ac_save_LDFLAGS=$LDFLAGS
 160                         LDFLAGS="";export LDFLAGS
 161                         KRB5_LIBS="`$KRB5_CONFIG --libs gssapi`"
 162                         KRB5_CFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
 163                         KRB5_CPPFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
 164                         CFLAGS=$ac_save_CFLAGS;export CFLAGS
 165                         LDFLAGS=$ac_save_LDFLAGS;export LDFLAGS
 166                         FOUND_KRB5=yes
 167                         AC_MSG_RESULT(yes)
 168                 else
 169                         AC_MSG_RESULT(no. Fallback to previous krb5 detection strategy)
 170                 fi
 171         fi
 172
 173         if test x$FOUND_KRB5 != x"yes"; then
 174                 #################################################
 175                 # check for location of Kerberos 5 install
 176                 AC_MSG_CHECKING(for kerberos 5 install path)
 177                 case "$krb5_withval" in
 178                         no)
 179                                 AC_MSG_RESULT(no krb5-path given)
 180                                 ;;
 181                         yes)
 182                                 AC_MSG_RESULT(/usr)
 183                                 FOUND_KRB5=yes
 184                                 ;;
 185                         *)
 186                                 AC_MSG_RESULT($krb5_withval)
 187                                 KRB5_CFLAGS="-I$krb5_withval/include"
 188                                 KRB5_CPPFLAGS="-I$krb5_withval/include"
 189                                 KRB5_LDFLAGS="-L$krb5_withval/lib"
 190                                 FOUND_KRB5=yes
 191                                 ;;
 192                 esac
 193         fi
 194
 195         if test x$FOUND_KRB5 != x"yes"; then
 196                 #################################################
 197                 # see if this box has the SuSE location for the heimdal krb implementation
 198                 AC_MSG_CHECKING(for /usr/include/heimdal)
 199                 if test -d /usr/include/heimdal; then
 200                         if test -f /usr/lib/heimdal/lib/libkrb5.a; then
 201                                 KRB5_CFLAGS="-I/usr/include/heimdal"
 202                                 KRB5_CPPFLAGS="-I/usr/include/heimdal"
 203                                 KRB5_LDFLAGS="-L/usr/lib/heimdal/lib"
 204                                 AC_MSG_RESULT(yes)
 205                         else
 206                                 KRB5_CFLAGS="-I/usr/include/heimdal"
 207                                 KRB5_CPPFLAGS="-I/usr/include/heimdal"
 208                                 AC_MSG_RESULT(yes)
 209                         fi
 210                 else
 211                         AC_MSG_RESULT(no)
 212                 fi
 213         fi
 214
 215         if test x$FOUND_KRB5 != x"yes"; then
 216                 #################################################
 217                 # see if this box has the RedHat location for kerberos
 218                 AC_MSG_CHECKING(for /usr/kerberos)
 219                 if test -d /usr/kerberos -a -f /usr/kerberos/lib/libkrb5.a; then
 220                         KRB5_LDFLAGS="-L/usr/kerberos/lib"
 221                         KRB5_CFLAGS="-I/usr/kerberos/include"
 222                         KRB5_CPPFLAGS="-I/usr/kerberos/include"
 223                         AC_MSG_RESULT(yes)
 224                 else
 225                         AC_MSG_RESULT(no)
 226                 fi
 227         fi
 228
 229         ac_save_CFLAGS=$CFLAGS
 230         ac_save_CPPFLAGS=$CPPFLAGS
 231         ac_save_LDFLAGS=$LDFLAGS
 232
 233         #MIT needs this, to let us see 'internal' parts of the headers we use
 234         KRB5_CFLAGS="${KRB5_CFLAGS} -DKRB5_PRIVATE -DKRB5_DEPRECATED"
 235
 236         CFLAGS="$CFLAGS $KRB5_CFLAGS"
 237         CPPFLAGS="$CPPFLAGS $KRB5_CPPFLAGS"
 238         LDFLAGS="$LDFLAGS $KRB5_LDFLAGS"
 239
 240         KRB5_LIBS="$KRB5_LDFLAGS $KRB5_LIBS"
 241
 242         # now check for krb5.h. Some systems have the libraries without the headers!
 243         # note that this check is done here to allow for different kerberos
 244         # include paths
 245         AC_CHECK_HEADERS(krb5.h)
 246
 247         if test x"$ac_cv_header_krb5_h" = x"no"; then
 248                 # Give a warning if KRB5 support was not explicitly requested,
 249                 # i.e with_krb5_support = auto, otherwise die with an error.
 250                 if test x"$with_krb5_support" = x"yes"; then
 251                         AC_MSG_ERROR([KRB5 cannot be supported without krb5.h])
 252                 else
 253                         AC_MSG_WARN([KRB5 cannot be supported without krb5.h])
 254                 fi
 255                 # Turn off AD support and restore CFLAGS and LIBS variables
 256                 with_krb5_support="no"
 257         fi
 258
 259         CFLAGS=$ac_save_CFLAGS
 260         CPPFLAGS=$ac_save_CPPFLAGS
 261         LDFLAGS=$ac_save_LDFLAGS
 262 fi
 263
 264 # Now we have determined whether we really want KRB5 support
 265
 266 if test x"$with_krb5_support" != x"no"; then
 267         ac_save_CFLAGS=$CFLAGS
 268         ac_save_CPPFLAGS=$CPPFLAGS
 269         ac_save_LDFLAGS=$LDFLAGS
 270         ac_save_LIBS=$LIBS
 271
 272         CFLAGS="$CFLAGS $KRB5_CFLAGS"
 273         CPPFLAGS="$CPPFLAGS $KRB5_CPPFLAGS"
 274         LDFLAGS="$LDFLAGS $KRB5_LDFLAGS"
 275
 276         # now check for gssapi headers.  This is also done here to allow for
 277         # different kerberos include paths
 278         AC_CHECK_HEADERS(gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h com_err.h)
 279
 280         ##################################################################
 281         # we might need the k5crypto and com_err libraries on some systems
 282         AC_CHECK_LIB_EXT(com_err, KRB5_LIBS, _et_list)
 283         AC_CHECK_LIB_EXT(k5crypto, KRB5_LIBS, krb5_encrypt_data)
 284
 285         # Heimdal checks.
 286         AC_CHECK_LIB_EXT(crypto, KRB5_LIBS, des_set_key)
 287         AC_CHECK_LIB_EXT(asn1, KRB5_LIBS, copy_Authenticator)
 288         AC_CHECK_LIB_EXT(roken, KRB5_LIBS, roken_getaddrinfo_hostspec)
 289
 290         # Heimdal checks. On static Heimdal gssapi must be linked before krb5.
 291         AC_CHECK_LIB_EXT(gssapi, KRB5_LIBS, gss_display_status,[],[],
 292                                 AC_DEFINE(HAVE_GSSAPI,1,[Whether GSSAPI is available]))
 293
 294         ########################################################
 295         # now see if we can find the krb5 libs in standard paths
 296         # or as specified above
 297         AC_CHECK_LIB_EXT(krb5, KRB5_LIBS, krb5_mk_req_extended)
 298         AC_CHECK_LIB_EXT(krb5, KRB5_LIBS, krb5_kt_compare)
 299
 300         ########################################################
 301         # now see if we can find the gssapi libs in standard paths
 302         AC_CHECK_LIB_EXT(gssapi_krb5, KRB5_LIBS,gss_display_status,[],[],
 303                 AC_DEFINE(HAVE_GSSAPI,1,[Whether GSSAPI is available]))
 304
 305         AC_CHECK_FUNC_EXT(krb5_set_real_time, $KRB5_LIBS)
 306         AC_CHECK_FUNC_EXT(krb5_set_default_in_tkt_etypes, $KRB5_LIBS)
 307         AC_CHECK_FUNC_EXT(krb5_set_default_tgs_ktypes, $KRB5_LIBS)
 308         AC_CHECK_FUNC_EXT(krb5_principal2salt, $KRB5_LIBS)
 309         AC_CHECK_FUNC_EXT(krb5_use_enctype, $KRB5_LIBS)
 310         AC_CHECK_FUNC_EXT(krb5_string_to_key, $KRB5_LIBS)
 311         AC_CHECK_FUNC_EXT(krb5_get_pw_salt, $KRB5_LIBS)
 312         AC_CHECK_FUNC_EXT(krb5_string_to_key_salt, $KRB5_LIBS)
 313         AC_CHECK_FUNC_EXT(krb5_auth_con_setkey, $KRB5_LIBS)
 314         AC_CHECK_FUNC_EXT(krb5_auth_con_setuseruserkey, $KRB5_LIBS)
 315         AC_CHECK_FUNC_EXT(krb5_locate_kdc, $KRB5_LIBS)
 316         AC_CHECK_FUNC_EXT(krb5_get_permitted_enctypes, $KRB5_LIBS)
 317         AC_CHECK_FUNC_EXT(krb5_get_default_in_tkt_etypes, $KRB5_LIBS)
 318         AC_CHECK_FUNC_EXT(krb5_free_ktypes, $KRB5_LIBS)
 319         AC_CHECK_FUNC_EXT(krb5_free_data_contents, $KRB5_LIBS)
 320         AC_CHECK_FUNC_EXT(krb5_principal_get_comp_string, $KRB5_LIBS)
 321         AC_CHECK_FUNC_EXT(krb5_free_unparsed_name, $KRB5_LIBS)
 322         AC_CHECK_FUNC_EXT(krb5_free_keytab_entry_contents, $KRB5_LIBS)
 323         AC_CHECK_FUNC_EXT(krb5_kt_free_entry, $KRB5_LIBS)
 324         AC_CHECK_FUNC_EXT(krb5_verify_checksum, $KRB5_LIBS)
 325         AC_CHECK_FUNC_EXT(krb5_c_verify_checksum, $KRB5_LIBS)
 326         AC_CHECK_FUNC_EXT(krb5_ticket_get_authorization_data_type, $KRB5_LIBS)
 327         AC_CHECK_FUNC_EXT(krb5_krbhst_get_addrinfo, $KRB5_LIBS)
 328
 329         LIBS="$LIBS $KRB5_LIBS"
 330
 331         AC_CACHE_CHECK([for addrtype in krb5_address],
 332                 samba_cv_HAVE_ADDRTYPE_IN_KRB5_ADDRESS,[
 333                 AC_TRY_COMPILE([#include <krb5.h>],
 334                 [krb5_address kaddr; kaddr.addrtype = ADDRTYPE_INET;],
 335                 samba_cv_HAVE_ADDRTYPE_IN_KRB5_ADDRESS=yes,
 336                 samba_cv_HAVE_ADDRTYPE_IN_KRB5_ADDRESS=no)])
 337         if test x"$samba_cv_HAVE_ADDRTYPE_IN_KRB5_ADDRESS" = x"yes"; then
 338                 AC_DEFINE(HAVE_ADDRTYPE_IN_KRB5_ADDRESS,1,
 339                 [Whether the krb5_address struct has a addrtype property])
 340         fi
 341
 342         AC_CACHE_CHECK([for addr_type in krb5_address],
 343                 samba_cv_HAVE_ADDR_TYPE_IN_KRB5_ADDRESS,[
 344                 AC_TRY_COMPILE([#include <krb5.h>],
 345                 [krb5_address kaddr; kaddr.addr_type = KRB5_ADDRESS_INET;],
 346                 samba_cv_HAVE_ADDR_TYPE_IN_KRB5_ADDRESS=yes,
 347                 samba_cv_HAVE_ADDR_TYPE_IN_KRB5_ADDRESS=no)])
 348         if test x"$samba_cv_HAVE_ADDR_TYPE_IN_KRB5_ADDRESS" = x"yes"; then
 349                 AC_DEFINE(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS,1,
 350                 [Whether the krb5_address struct has a addr_type property])
 351         fi
 352
 353         AC_CACHE_CHECK([for enc_part2 in krb5_ticket],
 354                 samba_cv_HAVE_KRB5_TKT_ENC_PART2,[
 355                 AC_TRY_COMPILE([#include <krb5.h>],
 356                 [krb5_ticket tkt; tkt.enc_part2->authorization_data[0]->contents = NULL;],
 357                 samba_cv_HAVE_KRB5_TKT_ENC_PART2=yes,
 358                 samba_cv_HAVE_KRB5_TKT_ENC_PART2=no)])
 359         if test x"$samba_cv_HAVE_KRB5_TKT_ENC_PART2" = x"yes"; then
 360                 AC_DEFINE(HAVE_KRB5_TKT_ENC_PART2,1,
 361                 [Whether the krb5_ticket struct has a enc_part2 property])
 362         fi
 363
 364         AC_CACHE_CHECK([for keyvalue in krb5_keyblock],
 365                 samba_cv_HAVE_KRB5_KEYBLOCK_KEYVALUE,[
 366                 AC_TRY_COMPILE([#include <krb5.h>],
 367                 [krb5_keyblock key; key.keyvalue.data = NULL;],
 368                 samba_cv_HAVE_KRB5_KEYBLOCK_KEYVALUE=yes,
 369                 samba_cv_HAVE_KRB5_KEYBLOCK_KEYVALUE=no)])
 370         if test x"$samba_cv_HAVE_KRB5_KEYBLOCK_KEYVALUE" = x"yes"; then
 371                 AC_DEFINE(HAVE_KRB5_KEYBLOCK_KEYVALUE,1,
 372                 [Whether the krb5_keyblock struct has a keyvalue property])
 373         fi
 374
 375         AC_CACHE_CHECK([for ENCTYPE_ARCFOUR_HMAC_MD5],
 376                 samba_cv_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5,[
 377                 AC_TRY_COMPILE([#include <krb5.h>],
 378                 [krb5_enctype enctype; enctype = ENCTYPE_ARCFOUR_HMAC_MD5;],
 379                 samba_cv_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5=yes,
 380                 samba_cv_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5=no)])
 381         AC_CACHE_CHECK([for KEYTYPE_ARCFOUR_56],
 382                  samba_cv_HAVE_KEYTYPE_ARCFOUR_56,[
 383                 AC_TRY_COMPILE([#include <krb5.h>],
 384                 [krb5_keytype keytype; keytype = KEYTYPE_ARCFOUR_56;],
 385                 samba_cv_HAVE_KEYTYPE_ARCFOUR_56=yes,
 386                 samba_cv_HAVE_KEYTYPE_ARCFOUR_56=no)])
 387         # Heimdals with KEYTYPE_ARCFOUR but not KEYTYPE_ARCFOUR_56 are broken
 388         # w.r.t. arcfour and windows, so we must not enable it here
 389         if test x"$samba_cv_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5" = x"yes" -a\
 390            x"$samba_cv_HAVE_KEYTYPE_ARCFOUR_56" = x"yes"; then
 391                 AC_DEFINE(HAVE_ENCTYPE_ARCFOUR_HMAC_MD5,1,
 392                 [Whether the ENCTYPE_ARCFOUR_HMAC_MD5 key type is available])
 393         fi
 394
 395         AC_CACHE_CHECK([for AP_OPTS_USE_SUBKEY],
 396                 samba_cv_HAVE_AP_OPTS_USE_SUBKEY,[
 397                 AC_TRY_COMPILE([#include <krb5.h>],
 398                 [krb5_flags ap_options; ap_options = AP_OPTS_USE_SUBKEY;],
 399                 samba_cv_HAVE_AP_OPTS_USE_SUBKEY=yes,
 400                 samba_cv_HAVE_AP_OPTS_USE_SUBKEY=no)])
 401         if test x"$samba_cv_HAVE_AP_OPTS_USE_SUBKEY" = x"yes"; then
 402                 AC_DEFINE(HAVE_AP_OPTS_USE_SUBKEY,1,
 403                 [Whether the AP_OPTS_USE_SUBKEY ap option is available])
 404         fi
 405
 406         AC_CACHE_CHECK([for KV5M_KEYTAB],
 407                 samba_cv_HAVE_KV5M_KEYTAB,[
 408                 AC_TRY_COMPILE([#include <krb5.h>],
 409                 [krb5_keytab_entry entry; entry.magic = KV5M_KEYTAB;],
 410                 samba_cv_HAVE_KV5M_KEYTAB=yes,
 411                 samba_cv_HAVE_KV5M_KEYTAB=no)])
 412         if test x"$samba_cv_HAVE_KV5M_KEYTAB" = x"yes"; then
 413                 AC_DEFINE(HAVE_KV5M_KEYTAB,1,
 414                 [Whether the KV5M_KEYTAB option is available])
 415         fi
 416
 417         AC_CACHE_CHECK([for the krb5_princ_component macro],
 418                 samba_cv_HAVE_KRB5_PRINC_COMPONENT,[
 419                 AC_TRY_LINK([#include <krb5.h>],
 420                 [const krb5_data *pkdata; krb5_context context; krb5_principal principal;
 421                         pkdata = krb5_princ_component(context, principal, 0);],
 422                 samba_cv_HAVE_KRB5_PRINC_COMPONENT=yes,
 423                 samba_cv_HAVE_KRB5_PRINC_COMPONENT=no)])
 424         if test x"$samba_cv_HAVE_KRB5_PRINC_COMPONENT" = x"yes"; then
 425                 AC_DEFINE(HAVE_KRB5_PRINC_COMPONENT,1,
 426                [Whether krb5_princ_component is available])
 427         fi
 428
 429         AC_CACHE_CHECK([for key in krb5_keytab_entry],
 430                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEY,[
 431                 AC_TRY_COMPILE([#include <krb5.h>],
 432                 [krb5_keytab_entry entry; krb5_keyblock e; entry.key = e;],
 433                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEY=yes,
 434                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEY=no)])
 435         if test x"$samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEY" = x"yes"; then
 436                 AC_DEFINE(HAVE_KRB5_KEYTAB_ENTRY_KEY,1,
 437                 [Whether krb5_keytab_entry has key member])
 438         fi
 439
 440         AC_CACHE_CHECK([for keyblock in krb5_keytab_entry],
 441                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK,[
 442                 AC_TRY_COMPILE([#include <krb5.h>],
 443                 [krb5_keytab_entry entry; entry.keyblock.keytype = 0;],
 444                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK=yes,
 445                 samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK=no)])
 446         if test x"$samba_cv_HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK" = x"yes"; then
 447                 AC_DEFINE(HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK,1,
 448                 [Whether krb5_keytab_entry has keyblock member])
 449         fi
 450
 451         AC_CACHE_CHECK([for WRFILE: keytab support],
 452                 samba_cv_HAVE_WRFILE_KEYTAB,[
 453                 AC_TRY_RUN([
 454                 #include<krb5.h>
 455                 main()
 456                 {
 457                         krb5_context context;
 458                         krb5_keytab keytab;
 459                         krb5_init_context(&context);
 460                         if (krb5_kt_resolve(context, "WRFILE:api", &keytab))
 461                                 exit(0);
 462                         exit(1);
 463                 }],
 464                 samba_cv_HAVE_WRFILE_KEYTAB=no,
 465                 samba_cv_HAVE_WRFILE_KEYTAB=yes)])
 466         if test x"$samba_cv_HAVE_WRFILE_KEYTAB" = x"yes"; then
 467                 AC_DEFINE(HAVE_WRFILE_KEYTAB,1,
 468                 [Whether the WRFILE:-keytab is supported])
 469         fi
 470
 471         AC_CACHE_CHECK([for krb5_princ_realm returns krb5_realm or krb5_data],
 472                samba_cv_KRB5_PRINC_REALM_RETURNS_REALM,[
 473                 AC_TRY_COMPILE([#include <krb5.h>],
 474                 [krb5_context context;krb5_principal principal;krb5_realm realm;
 475                         realm = *krb5_princ_realm(context, principal);],
 476                 samba_cv_KRB5_PRINC_REALM_RETURNS_REALM=yes,
 477                 samba_cv_KRB5_PRINC_REALM_RETURNS_REALM=no)])
 478         if test x"$samba_cv_KRB5_PRINC_REALM_RETURNS_REALM" = x"yes"; then
 479                 AC_DEFINE(KRB5_PRINC_REALM_RETURNS_REALM,1,
 480                 [Whether krb5_princ_realm returns krb5_realm or krb5_data])
 481         fi
 482
 483         if test x"$ac_cv_lib_ext_krb5_krb5_mk_req_extended" = x"yes"; then
 484                 AC_DEFINE(HAVE_KRB5,1,[Whether to have KRB5 support])
 485                 AC_MSG_CHECKING(whether KRB5 support is used)
 486                 SMB_EXT_LIB_ENABLE(KRB5,YES)
 487                 AC_MSG_RESULT(yes)
 488         else
 489                 if test x"$with_krb5_support" = x"yes"; then
 490                         AC_MSG_ERROR(a working krb5 library is needed for KRB5 support)
 491                 else
 492                         AC_MSG_WARN(a working krb5 library is needed for KRB5 support)
 493                 fi
 494                 KRB5_CFLAGS=""
 495                 KRB5_CPPFLAGS=""
 496                 KRB5_LDFLAGS=""
 497                 KRB5_LIBS=""
 498                 with_krb5_support=no
 499         fi
 500
 501         CFLAGS=$ac_save_CFLAGS
 502         CPPFLAGS=$ac_save_CPPFLAGS
 503         LDFLAGS=$ac_save_LDFLAGS
 504         LIBS="$ac_save_LIBS"
 505
 506         # as a nasty hack add the krb5 stuff to the global vars,
 507         # at some point this should not be needed anymore when the build system
 508         # can handle that alone
 509         CFLAGS="$CFLAGS $KRB5_CFLAGS"
 510         CPPFLAGS="$CPPFLAGS $KRB5_CPPFLAGS"
 511         LDFLAGS="$LDFLAGS $KRB5_LDFLAGS"
 512 fi
 513
 514 SMB_EXT_LIB(LDAP,[${LDAP_LIBS}],[${LDAP_CFLAGS}],[${LDAP_CPPFLAGS}],[${LDAP_LDFLAGS}])
 515 SMB_EXT_LIB(KRB5,[${KRB5_LIBS}],[${KRB5_CFLAGS}],[${KRB5_CPPFLAGS}],[${KRB5_LDFLAGS}])