git.sur5r.net Git - openldap/blob - build/openldap.m4

   1 dnl $OpenLDAP$
   2 dnl
   3 dnl Copyright 1998-2002 The OpenLDAP Foundation, Redwood City, California, USA
   4 dnl All rights reserved.
   5 dnl
   6 dnl Redistribution and use in source and binary forms, with or without
   7 dnl modification, are permitted only as authorized by the OpenLDAP
   8 dnl Public License.  A copy of this license is available at
   9 dnl http://www.OpenLDAP.org/license.html or in file LICENSE in the
  10 dnl top-level directory of the distribution.
  11 dnl
  12 dnl OpenLDAP Autoconf Macros
  13 dnl
  14 dnl --------------------------------------------------------------------
  15 dnl Restricted form of AC_ARG_ENABLE that limits user options
  16 dnl
  17 dnl $1 = option name
  18 dnl $2 = help-string
  19 dnl $3 = default value  (auto)
  20 dnl $4 = allowed values (auto yes no)
  21 AC_DEFUN([OL_ARG_ENABLE], [# OpenLDAP --enable-$1
  22         AC_ARG_ENABLE($1,changequote(<,>)<$2 [>ifelse($3,,auto,$3)<]>changequote([,]),[
  23         ol_arg=invalid
  24         for ol_val in ifelse($4,,[auto yes no],[$4]) ; do
  25                 if test "$enableval" = "$ol_val" ; then
  26                         ol_arg="$ol_val"
  27                 fi
  28         done
  29         if test "$ol_arg" = "invalid" ; then
  30                 AC_MSG_ERROR(bad value $enableval for --enable-$1)
  31         fi
  32         ol_enable_$1="$ol_arg"
  33 ],
  34 [       ol_enable_$1=ifelse($3,,"auto","$3")])dnl
  35 dnl AC_VERBOSE(OpenLDAP -enable-$1 $ol_enable_$1)
  36 # end --enable-$1
  37 ])dnl
  38 dnl
  39 dnl --------------------------------------------------------------------
  40 dnl Restricted form of AC_ARG_WITH that limits user options
  41 dnl
  42 dnl $1 = option name
  43 dnl $2 = help-string
  44 dnl $3 = default value (no)
  45 dnl $4 = allowed values (yes or no)
  46 AC_DEFUN([OL_ARG_WITH], [# OpenLDAP --with-$1
  47         AC_ARG_WITH($1,changequote(<,>)<$2 [>ifelse($3,,yes,$3)<]>changequote([,]),[
  48         ol_arg=invalid
  49         for ol_val in ifelse($4,,[yes no],[$4]) ; do
  50                 if test "$withval" = "$ol_val" ; then
  51                         ol_arg="$ol_val"
  52                 fi
  53         done
  54         if test "$ol_arg" = "invalid" ; then
  55                 AC_MSG_ERROR(bad value $withval for --with-$1)
  56         fi
  57         ol_with_$1="$ol_arg"
  58 ],
  59 [       ol_with_$1=ifelse($3,,"no","$3")])dnl
  60 dnl AC_VERBOSE(OpenLDAP --with-$1 $ol_with_$1)
  61 # end --with-$1
  62 ])dnl
  63 dnl
  64 dnl ====================================================================
  65 dnl
  66 AC_DEFUN(AC_COMPILE_CHECK_SIZEOF,
  67 [changequote(<<, >>)dnl
  68 dnl The name to #define.
  69 define(<<AC_TYPE_NAME>>, translit(sizeof_$1, [a-z *], [A-Z_P]))dnl
  70 dnl The cache variable name.
  71 define(<<AC_CV_NAME>>, translit(ac_cv_sizeof_$1, [ *], [_p]))dnl
  72 changequote([, ])dnl
  73 AC_MSG_CHECKING(size of $1)
  74 AC_CACHE_VAL(AC_CV_NAME,
  75 [for ac_size in 4 8 1 2 16 $2 ; do # List sizes in rough order of prevalence.
  76   AC_TRY_COMPILE([#include "confdefs.h"
  77 #include <sys/types.h>
  78 $2
  79 ], [switch (0) case 0: case (sizeof ($1) == $ac_size):;], AC_CV_NAME=$ac_size)
  80   if test x$AC_CV_NAME != x ; then break; fi
  81 done
  82 ])
  83 if test x$AC_CV_NAME = x ; then
  84   AC_MSG_ERROR([cannot determine a size for $1])
  85 fi
  86 AC_MSG_RESULT($AC_CV_NAME)
  87 AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME, [The number of bytes in type $1])
  88 undefine([AC_TYPE_NAME])dnl
  89 undefine([AC_CV_NAME])dnl
  90 ])
  91 dnl ====================================================================
  92 dnl check if hard links are supported.
  93 dnl
  94 AC_DEFUN([OL_PROG_LN_H], [# test for ln hardlink support
  95 AC_MSG_CHECKING(whether ln works)
  96 AC_CACHE_VAL(ol_cv_prog_LN_H,
  97 [rm -f conftest.src conftest.dst
  98 echo "conftest" > conftest.src
  99 if ln conftest.src conftest.dst 2>/dev/null
 100 then
 101   ol_cv_prog_LN_H="ln"
 102 else
 103   ol_cv_prog_LN_H="cp"
 104 fi
 105 rm -f conftest.src conftest.dst
 106 ])dnl
 107 LN_H="$ol_cv_prog_LN_H"
 108 if test "$ol_cv_prog_LN_H" = "ln"; then
 109         AC_MSG_RESULT(yes)
 110 else
 111         AC_MSG_RESULT(no)
 112 fi
 113 AC_SUBST(LN_H)dnl
 114 ])dnl
 115 dnl
 116 dnl ====================================================================
 117 dnl Check for dependency generation flag
 118 AC_DEFUN([OL_MKDEPEND], [# test for make depend flag
 119 OL_MKDEP=
 120 OL_MKDEP_FLAGS=
 121 if test -z "${MKDEP}"; then
 122         OL_MKDEP="${CC-cc}"
 123         if test -z "${MKDEP_FLAGS}"; then
 124                 AC_CACHE_CHECK([for ${OL_MKDEP} depend flag], ol_cv_mkdep, [
 125                         ol_cv_mkdep=no
 126                         for flag in "-M" "-xM"; do
 127                                 cat > conftest.c <<EOF
 128  noCode;
 129 EOF
 130                                 if AC_TRY_COMMAND($OL_MKDEP $flag conftest.c) \
 131                                         | egrep '^conftest\.'"${ac_objext}" >/dev/null 2>&1
 132                                 then
 133                                         if test ! -f conftest."${ac_object}" ; then
 134                                                 ol_cv_mkdep=$flag
 135                                                 OL_MKDEP_FLAGS="$flag"
 136                                                 break
 137                                         fi
 138                                 fi
 139                         done
 140                         rm -f conftest*
 141                 ])
 142         else
 143                 cc_cv_mkdep=yes
 144                 OL_MKDEP_FLAGS="${MKDEP_FLAGS}"
 145         fi
 146 else
 147         cc_cv_mkdep=yes
 148         OL_MKDEP="${MKDEP}"
 149         OL_MKDEP_FLAGS="${MKDEP_FLAGS}"
 150 fi
 151 AC_SUBST(OL_MKDEP)
 152 AC_SUBST(OL_MKDEP_FLAGS)
 153 ])
 154 dnl
 155 dnl ====================================================================
 156 dnl Check if system uses EBCDIC instead of ASCII
 157 AC_DEFUN([OL_CPP_EBCDIC], [# test for EBCDIC
 158 AC_CACHE_CHECK([for EBCDIC],ol_cv_cpp_ebcdic,[
 159         AC_TRY_CPP([
 160 #if !('M' == 0xd4)
 161 #include <__ASCII__/generate_error.h>
 162 #endif
 163 ],
 164         [ol_cv_cpp_ebcdic=yes],
 165         [ol_cv_cpp_ebcdic=no])])
 166 if test $ol_cv_cpp_ebcdic = yes ; then
 167         AC_DEFINE(HAVE_EBCDIC,1, [define if system uses EBCDIC instead of ASCII])
 168 fi
 169 ])
 170 dnl
 171 dnl --------------------------------------------------------------------
 172 dnl OpenLDAP version of STDC header check w/ EBCDIC support
 173 AC_DEFUN(OL_HEADER_STDC,
 174 [AC_REQUIRE_CPP()dnl
 175 AC_REQUIRE([OL_CPP_EBCDIC])dnl
 176 AC_CACHE_CHECK([for ANSI C header files], ol_cv_header_stdc,
 177 [AC_TRY_CPP([#include <stdlib.h>
 178 #include <stdarg.h>
 179 #include <string.h>
 180 #include <float.h>], ol_cv_header_stdc=yes, ol_cv_header_stdc=no)
 181
 182 if test $ol_cv_header_stdc = yes; then
 183   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 184 AC_EGREP_HEADER(memchr, string.h, , ol_cv_header_stdc=no)
 185 fi
 186
 187 if test $ol_cv_header_stdc = yes; then
 188   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 189 AC_EGREP_HEADER(free, stdlib.h, , ol_cv_header_stdc=no)
 190 fi
 191
 192 if test $ol_cv_header_stdc = yes; then
 193   # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
 194 AC_TRY_RUN([#include <ctype.h>
 195 #ifndef HAVE_EBCDIC
 196 #       define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
 197 #       define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
 198 #else
 199 #       define ISLOWER(c) (('a' <= (c) && (c) <= 'i') \
 200                 || ('j' <= (c) && (c) <= 'r') \
 201                 || ('s' <= (c) && (c) <= 'z'))
 202 #       define TOUPPER(c)       (ISLOWER(c) ? ((c) | 0x40) : (c))
 203 #endif
 204 #define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
 205 int main () { int i; for (i = 0; i < 256; i++)
 206 if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 207 exit (0); }
 208 ], , ol_cv_header_stdc=no, :)
 209 fi])
 210 if test $ol_cv_header_stdc = yes; then
 211   AC_DEFINE(STDC_HEADERS)
 212 fi
 213 ac_cv_header_stdc=disable
 214 ])
 215 dnl
 216 dnl ====================================================================
 217 dnl Check if struct passwd has pw_gecos
 218 AC_DEFUN([OL_STRUCT_PASSWD_PW_GECOS], [# test for pw_gecos in struct passwd
 219 AC_CACHE_CHECK([struct passwd for pw_gecos],ol_cv_struct_passwd_pw_gecos,[
 220         AC_TRY_COMPILE([#include <pwd.h>],[
 221         struct passwd pwd;
 222         pwd.pw_gecos = pwd.pw_name;
 223 ],
 224         [ol_cv_struct_passwd_pw_gecos=yes],
 225         [ol_cv_struct_passwd_pw_gecos=no])])
 226 if test $ol_cv_struct_passwd_pw_gecos = yes ; then
 227         AC_DEFINE(HAVE_PW_GECOS,1, [define if struct passwd has pw_gecos])
 228 fi
 229 ])
 230 dnl
 231 dnl --------------------------------------------------------------------
 232 dnl Check if struct passwd has pw_passwd
 233 AC_DEFUN([OL_STRUCT_PASSWD_PW_PASSWD], [# test for pw_passwd in struct passwd
 234 AC_CACHE_CHECK([struct passwd for pw_passwd],ol_cv_struct_passwd_pw_passwd,[
 235         AC_TRY_COMPILE([#include <pwd.h>],[
 236         struct passwd pwd;
 237         pwd.pw_passwd = pwd.pw_name;
 238 ],
 239         [ol_cv_struct_passwd_pw_passwd=yes],
 240         [ol_cv_struct_passwd_pw_passwd=no])])
 241 if test $ol_cv_struct_passwd_pw_passwd = yes ; then
 242         AC_DEFINE(HAVE_PW_PASSWD,1, [define if struct passwd has pw_passwd])
 243 fi
 244 ])
 245 dnl
 246 dnl ====================================================================
 247 dnl Berkeley DB macros
 248 dnl
 249 dnl --------------------------------------------------------------------
 250 dnl Try to link
 251 AC_DEFUN([OL_BERKELEY_DB_TRY],
 252 [if test $ol_cv_lib_db = no ; then
 253         AC_CACHE_CHECK([for Berkeley DB link (]ifelse($2,,default,$2)[)],[$1],
 254 [
 255         ol_DB_LIB=ifelse($2,,,$2)
 256         ol_LIBS=$LIBS
 257         LIBS="$ol_DB_LIB $LIBS"
 258
 259         AC_TRY_LINK([
 260 #ifdef HAVE_DB_185_H
 261 # include <db_185.h>
 262 #else
 263 # include <db.h>
 264 #endif
 265
 266 #ifndef DB_VERSION_MAJOR
 267 # define DB_VERSION_MAJOR 1
 268 #endif
 269
 270 #ifndef NULL
 271 #define NULL ((void*)0)
 272 #endif
 273 ],[
 274 #if DB_VERSION_MAJOR > 1
 275         {
 276                 char *version;
 277                 int major, minor, patch;
 278
 279                 version = db_version( &major, &minor, &patch );
 280
 281                 if( major != DB_VERSION_MAJOR ||
 282                         minor < DB_VERSION_MINOR )
 283                 {
 284                         printf("Berkeley DB version mismatch\n"
 285                                 "\texpected: %s\n\tgot: %s\n",
 286                                 DB_VERSION_STRING, version);
 287                         return 1;
 288                 }
 289         }
 290 #endif
 291
 292 #if DB_VERSION_MAJOR > 2
 293         db_env_create( NULL, 0 );
 294 #elif DB_VERSION_MAJOR > 1
 295         db_appexit( NULL );
 296 #else
 297         (void) dbopen( NULL, 0, 0, 0, NULL);
 298 #endif
 299 ],[$1=yes],[$1=no])
 300
 301         LIBS="$ol_LIBS"
 302 ])
 303
 304         if test $$1 = yes ; then
 305                 ol_cv_lib_db=ifelse($2,,yes,$2)
 306         fi
 307 fi
 308 ])
 309 dnl
 310 dnl --------------------------------------------------------------------
 311 dnl Try to locate appropriate library
 312 AC_DEFUN([OL_BERKELEY_DB_LINK],
 313 [ol_cv_lib_db=no
 314 OL_BERKELEY_DB_TRY(ol_cv_db_none)
 315 OL_BERKELEY_DB_TRY(ol_cv_db_db4,[-ldb4])
 316 OL_BERKELEY_DB_TRY(ol_cv_db_db_4,[-ldb-4])
 317 OL_BERKELEY_DB_TRY(ol_cv_db_db,[-ldb])
 318 OL_BERKELEY_DB_TRY(ol_cv_db_db3,[-ldb3])
 319 OL_BERKELEY_DB_TRY(ol_cv_db_db_3,[-ldb-3])
 320 OL_BERKELEY_DB_TRY(ol_cv_db_db2,[-ldb2])
 321 OL_BERKELEY_DB_TRY(ol_cv_db_db_2,[-ldb-2])
 322 OL_BERKELEY_DB_TRY(ol_cv_db_db1,[-ldb1])
 323 OL_BERKELEY_DB_TRY(ol_cv_db_db_1,[-ldb-1])
 324 ])
 325 dnl
 326 dnl --------------------------------------------------------------------
 327 dnl Check if Berkeley DB supports DB_THREAD
 328 AC_DEFUN([OL_BERKELEY_DB_THREAD],
 329 [AC_CACHE_CHECK([for Berkeley DB thread support], [ol_cv_berkeley_db_thread], [
 330         ol_LIBS="$LIBS"
 331         if test $ol_cv_lib_db != yes ; then
 332                 LIBS="$ol_cv_lib_db"
 333         fi
 334
 335         AC_TRY_RUN([
 336 #ifdef HAVE_DB_185_H
 337         choke me;
 338 #else
 339 #include <db.h>
 340 #endif
 341 #ifndef NULL
 342 #define NULL ((void *)0)
 343 #endif
 344 main()
 345 {
 346         int rc;
 347         u_int32_t flags = DB_CREATE |
 348 #ifdef DB_PRIVATE
 349                 DB_PRIVATE |
 350 #endif
 351                 DB_THREAD;
 352
 353 #if DB_VERSION_MAJOR > 2
 354         DB_ENV *env = NULL;
 355
 356         rc = db_env_create( &env, 0 );
 357
 358         flags |= DB_INIT_MPOOL;
 359 #ifdef DB_MPOOL_PRIVATE
 360         flags |= DB_MPOOL_PRIVATE;
 361 #endif
 362
 363         if( rc ) {
 364                 printf("BerkeleyDB: %s\n", db_strerror(rc) );
 365                 return rc;
 366         }
 367
 368 #if (DB_VERSION_MAJOR > 3) || (DB_VERSION_MINOR >= 1)
 369         rc = env->open( env, NULL, flags, 0 );
 370 #else
 371         rc = env->open( env, NULL, NULL, flags, 0 );
 372 #endif
 373
 374         if ( rc == 0 ) {
 375                 rc = env->close( env, 0 );
 376         }
 377
 378         if( rc ) {
 379                 printf("BerkeleyDB: %s\n", db_strerror(rc) );
 380                 return rc;
 381         }
 382
 383 #else
 384         DB_ENV env;
 385         memset( &env, '\0', sizeof(env) );
 386
 387         rc = db_appinit( NULL, NULL, &env, flags );
 388
 389         if( rc == 0 ) {
 390                 db_appexit( &env );
 391         }
 392
 393         unlink("__db_mpool.share");
 394         unlink("__db_lock.share");
 395 #endif
 396
 397         return rc;
 398 }],
 399         [ol_cv_berkeley_db_thread=yes],
 400         [ol_cv_berkeley_db_thread=no],
 401         [ol_cv_berkeley_db_thread=cross])
 402
 403         LIBS="$ol_LIBS"
 404
 405         if test $ol_cv_berkeley_db_thread != no ; then
 406                 AC_DEFINE(HAVE_BERKELEY_DB_THREAD, 1,
 407                         [define if Berkeley DB has DB_THREAD support])
 408         fi
 409 ])])dnl
 410 dnl
 411 dnl --------------------------------------------------------------------
 412 dnl Find any DB
 413 AC_DEFUN([OL_BERKELEY_DB],
 414 [ol_cv_berkeley_db=no
 415 AC_CHECK_HEADERS(db.h)
 416 if test $ac_cv_header_db_h = yes; then
 417         OL_BERKELEY_DB_LINK
 418         if test "$ol_cv_lib_db" != no ; then
 419                 ol_cv_berkeley_db=yes
 420                 OL_BERKELEY_DB_THREAD
 421         fi
 422 fi
 423 ])
 424 dnl --------------------------------------------------------------------
 425 dnl Check for version compatility with back-bdb
 426 AC_DEFUN([OL_BDB_COMPAT],
 427 [AC_CACHE_CHECK([Berkeley DB version for BDB backend], [ol_cv_bdb_compat],[
 428         AC_EGREP_CPP(__db_version_compat,[
 429 #include <db.h>
 430
 431  /* this check could be improved */
 432 #ifndef DB_VERSION_MAJOR
 433 #       define DB_VERSION_MAJOR 1
 434 #endif
 435
 436 /* require 4.0 or later */
 437 #if DB_VERSION_MAJOR >= 4
 438         __db_version_compat
 439 #endif
 440         ],      [ol_cv_bdb_compat=yes], [ol_cv_bdb_compat=no])])
 441 ])
 442
 443 dnl --------------------------------------------------------------------
 444 dnl Find old Berkeley DB 1.85/1.86
 445 AC_DEFUN([OL_BERKELEY_COMPAT_DB],
 446 [AC_CHECK_HEADERS(db_185.h db.h)
 447 if test $ac_cv_header_db_185_h = yes -o $ac_cv_header_db_h = yes; then
 448         AC_CACHE_CHECK([if Berkeley DB header compatibility], [ol_cv_header_db1],[
 449                 AC_EGREP_CPP(__db_version_1,[
 450 #if HAVE_DB_185_H
 451 #       include <db_185.h>
 452 #else
 453 #       include <db.h>
 454 #endif
 455
 456  /* this check could be improved */
 457 #ifndef DB_VERSION_MAJOR
 458 #       define DB_VERSION_MAJOR 1
 459 #endif
 460
 461 #if DB_VERSION_MAJOR == 1
 462         __db_version_1
 463 #endif
 464 ],      [ol_cv_header_db1=yes], [ol_cv_header_db1=no])])
 465
 466         if test $ol_cv_header_db1 = yes ; then
 467                 OL_BERKELEY_DB_LINK
 468                 if test "$ol_cv_lib_db" != no ; then
 469                         ol_cv_berkeley_db=yes
 470                 fi
 471         fi
 472 fi
 473 ])
 474 dnl
 475 dnl ====================================================================
 476 dnl Check if GDBM library exists
 477 dnl Check for gdbm_open in standard libraries or -lgdbm
 478 dnl
 479 dnl defines ol_cv_lib_gdbm to 'yes' or '-lgdbm' or 'no'
 480 dnl             'yes' implies gdbm_open is in $LIBS
 481 dnl
 482 dnl uses:
 483 dnl             AC_CHECK_FUNC(gdbm_open)
 484 dnl             AC_CHECK_LIB(gdbm,gdbm_open)
 485 dnl
 486 AC_DEFUN([OL_LIB_GDBM],
 487 [AC_CACHE_CHECK(for GDBM library, [ol_cv_lib_gdbm],
 488 [       ol_LIBS="$LIBS"
 489         AC_CHECK_FUNC(gdbm_open,[ol_cv_lib_gdbm=yes], [
 490                 AC_CHECK_LIB(gdbm,gdbm_open,[ol_cv_lib_gdbm=-lgdbm],[ol_cv_lib_gdbm=no])
 491         ])
 492         LIBS="$ol_LIBS"
 493 ])
 494 ])dnl
 495 dnl
 496 dnl --------------------------------------------------------------------
 497 dnl Check if GDBM exists
 498 dnl
 499 dnl defines ol_cv_gdbm to 'yes' or 'no'
 500 dnl
 501 dnl uses:
 502 dnl             OL_LIB_GDBM
 503 dnl             AC_CHECK_HEADERS(gdbm.h)
 504 dnl
 505 AC_DEFUN([OL_GDBM],
 506 [AC_REQUIRE([OL_LIB_GDBM])
 507  AC_CHECK_HEADERS(gdbm.h)
 508  AC_CACHE_CHECK(for db, [ol_cv_gdbm], [
 509         if test $ol_cv_lib_gdbm = no -o $ac_cv_header_gdbm_h = no ; then
 510                 ol_cv_gdbm=no
 511         else
 512                 ol_cv_gdbm=yes
 513         fi
 514 ])
 515  if test $ol_cv_gdbm = yes ; then
 516         AC_DEFINE(HAVE_GDBM,1, [define if GNU DBM is available])
 517  fi
 518 ])dnl
 519 dnl
 520 dnl ====================================================================
 521 dnl Check if MDBM library exists
 522 dnl Check for mdbm_open in standard libraries or -lmdbm
 523 dnl
 524 dnl defines ol_cv_lib_mdbm to 'yes' or '-lmdbm' or 'no'
 525 dnl             'yes' implies mdbm_open is in $LIBS
 526 dnl
 527 dnl uses:
 528 dnl             AC_CHECK_FUNC(mdbm_set_chain)
 529 dnl             AC_CHECK_LIB(mdbm,mdbm_set_chain)
 530 dnl
 531 AC_DEFUN([OL_LIB_MDBM],
 532 [AC_CACHE_CHECK(for MDBM library, [ol_cv_lib_mdbm],
 533 [       ol_LIBS="$LIBS"
 534         AC_CHECK_FUNC(mdbm_set_chain,[ol_cv_lib_mdbm=yes], [
 535                 AC_CHECK_LIB(mdbm,mdbm_set_chain,[ol_cv_lib_mdbm=-lmdbm],[ol_cv_lib_mdbm=no])
 536         ])
 537         LIBS="$ol_LIBS"
 538 ])
 539 ])dnl
 540 dnl
 541 dnl --------------------------------------------------------------------
 542 dnl Check if MDBM exists
 543 dnl
 544 dnl defines ol_cv_mdbm to 'yes' or 'no'
 545 dnl
 546 dnl uses:
 547 dnl             OL_LIB_MDBM
 548 dnl             AC_CHECK_HEADERS(mdbm.h)
 549 dnl
 550 AC_DEFUN([OL_MDBM],
 551 [AC_REQUIRE([OL_LIB_MDBM])
 552  AC_CHECK_HEADERS(mdbm.h)
 553  AC_CACHE_CHECK(for db, [ol_cv_mdbm], [
 554         if test $ol_cv_lib_mdbm = no -o $ac_cv_header_mdbm_h = no ; then
 555                 ol_cv_mdbm=no
 556         else
 557                 ol_cv_mdbm=yes
 558         fi
 559 ])
 560  if test $ol_cv_mdbm = yes ; then
 561         AC_DEFINE(HAVE_MDBM,1, [define if MDBM is available])
 562  fi
 563 ])dnl
 564 dnl
 565 dnl ====================================================================
 566 dnl Check if NDBM library exists
 567 dnl Check for dbm_open in standard libraries or -lndbm or -ldbm
 568 dnl
 569 dnl defines ol_cv_lib_ndbm to 'yes' or '-lndbm' or -ldbm or 'no'
 570 dnl             'yes' implies ndbm_open is in $LIBS
 571 dnl
 572 dnl uses:
 573 dnl             AC_CHECK_FUNC(dbm_open)
 574 dnl             AC_CHECK_LIB(ndbm,dbm_open)
 575 dnl             AC_CHECK_LIB(dbm,dbm_open)
 576 dnl
 577 dnl restrictions:
 578 dnl             should also check SVR4 case: dbm_open() in -lucb but that
 579 dnl             would requiring dealing with -L/usr/ucblib
 580 dnl
 581 AC_DEFUN([OL_LIB_NDBM],
 582 [AC_CACHE_CHECK(for NDBM library, [ol_cv_lib_ndbm],
 583 [       ol_LIBS="$LIBS"
 584         AC_CHECK_FUNC(dbm_open,[ol_cv_lib_ndbm=yes], [
 585                 AC_CHECK_LIB(ndbm,dbm_open,[ol_cv_lib_ndbm=-lndbm], [
 586                         AC_CHECK_LIB(dbm,dbm_open,[ol_cv_lib_ndbm=-ldbm],
 587                                 [ol_cv_lib_ndbm=no])dnl
 588                 ])
 589         ])
 590         LIBS="$ol_LIBS"
 591 ])
 592 ])dnl
 593 dnl
 594 dnl --------------------------------------------------------------------
 595 dnl Check if NDBM exists
 596 dnl
 597 dnl defines ol_cv_ndbm to 'yes' or 'no'
 598 dnl
 599 dnl uses:
 600 dnl             OL_LIB_NDBM
 601 dnl             AC_CHECK_HEADERS(ndbm.h)
 602 dnl
 603 dnl restrictions:
 604 dnl             Doesn't handle SVR4 case (see above)
 605 dnl
 606 AC_DEFUN([OL_NDBM],
 607 [AC_REQUIRE([OL_LIB_NDBM])
 608  AC_CHECK_HEADERS(ndbm.h)
 609  AC_CACHE_CHECK(for db, [ol_cv_ndbm], [
 610         if test $ol_cv_lib_ndbm = no -o $ac_cv_header_ndbm_h = no ; then
 611                 ol_cv_ndbm=no
 612         else
 613                 ol_cv_ndbm=yes
 614         fi
 615 ])
 616  if test $ol_cv_ndbm = yes ; then
 617         AC_DEFINE(HAVE_NDBM,1, [define if NDBM is available])
 618  fi
 619 ])dnl
 620 dnl
 621 dnl ====================================================================
 622 dnl Check POSIX Thread version
 623 dnl
 624 dnl defines ol_cv_posix_version to 'final' or 'draft' or 'unknown'
 625 dnl     'unknown' implies that the version could not be detected
 626 dnl             or that pthreads.h does exist.  Existance of pthreads.h
 627 dnl             should be tested separately.
 628 dnl
 629 AC_DEFUN([OL_POSIX_THREAD_VERSION],
 630 [AC_CACHE_CHECK([POSIX thread version],[ol_cv_pthread_version],[
 631         AC_EGREP_CPP(pthread_version_final,[
 632 #               include <pthread.h>
 633                 /* this check could be improved */
 634 #               ifdef PTHREAD_ONCE_INIT
 635                         pthread_version_final;
 636 #               endif
 637         ], ol_pthread_final=yes, ol_pthread_final=no)
 638
 639         AC_EGREP_CPP(pthread_version_draft4,[
 640 #               include <pthread.h>
 641                 /* this check could be improved */
 642 #               ifdef pthread_once_init
 643                         pthread_version_draft4;
 644 #               endif
 645         ], ol_pthread_draft4=yes, ol_pthread_draft4=no)
 646
 647         if test $ol_pthread_final = yes -a $ol_pthread_draft4 = no; then
 648                 ol_cv_pthread_version=final
 649         elif test $ol_pthread_final = no -a $ol_pthread_draft4 = yes; then
 650                 ol_cv_pthread_version=draft4
 651         else
 652                 ol_cv_pthread_version=unknown
 653         fi
 654 ])
 655 ])dnl
 656 dnl
 657 dnl --------------------------------------------------------------------
 658 AC_DEFUN([OL_PTHREAD_TEST_INCLUDES],
 659 [/* pthread test headers */
 660 #include <pthread.h>
 661 #ifndef NULL
 662 #define NULL (void*)0
 663 #endif
 664
 665 static void *task(p)
 666         void *p;
 667 {
 668         return (void *) (p == NULL);
 669 }
 670 ])
 671 AC_DEFUN([OL_PTHREAD_TEST_FUNCTION],[
 672         /* pthread test function */
 673         pthread_t t;
 674         int status;
 675         int detach = 1;
 676
 677 #ifdef HAVE_PTHREADS_FINAL
 678         /* Final pthreads */
 679         pthread_attr_t attr;
 680
 681         status = pthread_attr_init(&attr);
 682         if( status ) return status;
 683
 684 #if defined( PTHREAD_CREATE_JOINABLE ) || defined( PTHREAD_UNDETACHED )
 685         if( !detach ) {
 686 #if defined( PTHREAD_CREATE_JOINABLE )
 687                 status = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
 688 #else
 689                 status = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_UNDETACHED);
 690 #endif
 691
 692 #ifdef PTHREAD_CREATE_DETACHED
 693         } else {
 694                 status = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 695 #endif
 696         }
 697         if( status ) return status;
 698 #endif
 699
 700         status = pthread_create( &t, &attr, task, NULL );
 701         if( status ) return status;
 702
 703 #if !defined( PTHREAD_CREATE_JOINABLE ) && !defined( PTHREAD_UNDETACHED )
 704         if( detach ) {
 705                 /* give thread a chance to complete */
 706                 /* it should remain joinable and hence detachable */
 707                 sleep( 1 );
 708
 709                 status = pthread_detach( t );
 710                 if( status ) return status;
 711         }
 712 #endif
 713
 714 #else
 715         /* Draft 4 pthreads */
 716         status = pthread_create( &t, pthread_attr_default, task, NULL );
 717         if( status ) return status;
 718
 719         if( detach ) {
 720                 /* give thread a chance to complete */
 721                 /* it should remain joinable and hence detachable */
 722                 sleep( 1 );
 723
 724                 status = pthread_detach( &t );
 725                 if( status ) return status;
 726         }
 727 #endif
 728
 729 #ifdef HAVE_LINUX_THREADS
 730         pthread_kill_other_threads_np();
 731 #endif
 732
 733         return 0;
 734 ])
 735
 736 AC_DEFUN([OL_PTHREAD_TEST_PROGRAM],
 737 [OL_PTHREAD_TEST_INCLUDES
 738
 739 int main(argc, argv)
 740         int argc;
 741         char **argv;
 742 {
 743 OL_PTHREAD_TEST_FUNCTION
 744 }
 745 ])
 746 dnl --------------------------------------------------------------------
 747 AC_DEFUN([OL_PTHREAD_TRY], [# Pthread try link: $1 ($2)
 748 if test "$ol_link_threads" = no ; then
 749         # try $1
 750         AC_CACHE_CHECK([for pthread link with $1], [$2], [
 751                 # save the flags
 752                 ol_LIBS="$LIBS"
 753                 LIBS="$1 $LIBS"
 754
 755                 AC_TRY_RUN(OL_PTHREAD_TEST_PROGRAM,
 756                         [$2=yes], [$2=no],
 757                         [AC_TRY_LINK(OL_PTHREAD_TEST_INCLUDES,OL_PTHREAD_TEST_FUNCTION,
 758                                 [$2=yes], [$2=no])])
 759
 760                 # restore the LIBS
 761                 LIBS="$ol_LIBS"
 762         ])
 763
 764         if test $$2 = yes ; then
 765                 ol_link_pthreads="$1"
 766                 ol_link_threads=posix
 767         fi
 768 fi
 769 ])
 770 dnl
 771 dnl ====================================================================
 772 dnl Check GNU Pth pthread Header
 773 dnl
 774 dnl defines ol_cv_header linux_threads to 'yes' or 'no'
 775 dnl             'no' implies pthreads.h is not LinuxThreads or pthreads.h
 776 dnl             doesn't exists.  Existance of pthread.h should separately
 777 dnl             checked.
 778 dnl
 779 AC_DEFUN([OL_HEADER_GNU_PTH_PTHREAD_H], [
 780         AC_CACHE_CHECK([for GNU Pth pthread.h],
 781                 [ol_cv_header_gnu_pth_pthread_h],
 782                 [AC_EGREP_CPP(__gnu_pth__,
 783                         [#include <pthread.h>
 784 #ifdef _POSIX_THREAD_IS_GNU_PTH
 785         __gnu_pth__;
 786 #endif
 787 ],
 788                         [ol_cv_header_gnu_pth_pthread_h=yes],
 789                         [ol_cv_header_gnu_pth_pthread_h=no])
 790                 ])
 791 ])dnl
 792 dnl ====================================================================
 793 dnl Check for NT Threads
 794 AC_DEFUN([OL_NT_THREADS], [
 795         AC_CHECK_FUNC(_beginthread)
 796
 797         if test $ac_cv_func__beginthread = yes ; then
 798                 AC_DEFINE(HAVE_NT_THREADS,1,[if you have NT Threads])
 799                 ol_cv_nt_threads=yes
 800         fi
 801 ])
 802 dnl ====================================================================
 803 dnl Check LinuxThreads Header
 804 dnl
 805 dnl defines ol_cv_header linux_threads to 'yes' or 'no'
 806 dnl             'no' implies pthreads.h is not LinuxThreads or pthreads.h
 807 dnl             doesn't exists.  Existance of pthread.h should separately
 808 dnl             checked.
 809 dnl
 810 AC_DEFUN([OL_HEADER_LINUX_THREADS], [
 811         AC_CACHE_CHECK([for LinuxThreads pthread.h],
 812                 [ol_cv_header_linux_threads],
 813                 [AC_EGREP_CPP(pthread_kill_other_threads_np,
 814                         [#include <pthread.h>],
 815                         [ol_cv_header_linux_threads=yes],
 816                         [ol_cv_header_linux_threads=no])
 817                 ])
 818         if test $ol_cv_header_linux_threads = yes; then
 819                 AC_DEFINE(HAVE_LINUX_THREADS,1,[if you have LinuxThreads])
 820         fi
 821 ])dnl
 822 dnl --------------------------------------------------------------------
 823 dnl     Check LinuxThreads Implementation
 824 dnl
 825 dnl     defines ol_cv_sys_linux_threads to 'yes' or 'no'
 826 dnl     'no' implies pthreads implementation is not LinuxThreads.
 827 dnl
 828 AC_DEFUN([OL_SYS_LINUX_THREADS], [
 829         AC_CHECK_FUNCS(pthread_kill_other_threads_np)
 830         AC_CACHE_CHECK([for LinuxThreads implementation],
 831                 [ol_cv_sys_linux_threads],
 832                 [ol_cv_sys_linux_threads=$ac_cv_func_pthread_kill_other_threads_np])
 833 ])dnl
 834 dnl
 835 dnl --------------------------------------------------------------------
 836 dnl Check LinuxThreads consistency
 837 AC_DEFUN([OL_LINUX_THREADS], [
 838         AC_REQUIRE([OL_HEADER_LINUX_THREADS])
 839         AC_REQUIRE([OL_SYS_LINUX_THREADS])
 840         AC_CACHE_CHECK([for LinuxThreads consistency], [ol_cv_linux_threads], [
 841                 if test $ol_cv_header_linux_threads = yes -a \
 842                         $ol_cv_sys_linux_threads = yes; then
 843                         ol_cv_linux_threads=yes
 844                 elif test $ol_cv_header_linux_threads = no -a \
 845                         $ol_cv_sys_linux_threads = no; then
 846                         ol_cv_linux_threads=no
 847                 else
 848                         ol_cv_linux_threads=error
 849                 fi
 850         ])
 851 ])dnl
 852 dnl
 853 dnl ====================================================================
 854 dnl Check for POSIX Regex
 855 AC_DEFUN([OL_POSIX_REGEX], [
 856 AC_CACHE_CHECK([for compatible POSIX regex],ol_cv_c_posix_regex,[
 857         AC_TRY_RUN([
 858 #include <sys/types.h>
 859 #include <regex.h>
 860 static char *pattern, *string;
 861 main()
 862 {
 863         int rc;
 864         regex_t re;
 865
 866         pattern = "^A";
 867
 868         if(regcomp(&re, pattern, 0)) {
 869                 return -1;
 870         }
 871
 872         string = "ALL MATCH";
 873
 874         rc = regexec(&re, string, 0, (void*)0, 0);
 875
 876         regfree(&re);
 877
 878         return rc;
 879 }],
 880         [ol_cv_c_posix_regex=yes],
 881         [ol_cv_c_posix_regex=no],
 882         [ol_cv_c_posix_regex=cross])])
 883 ])
 884 dnl
 885 dnl ====================================================================
 886 dnl Check if toupper() requires islower() to be called first
 887 AC_DEFUN([OL_C_UPPER_LOWER],
 888 [AC_CACHE_CHECK([if toupper() requires islower()],ol_cv_c_upper_lower,[
 889         AC_TRY_RUN([
 890 #include <ctype.h>
 891 main()
 892 {
 893         if ('C' == toupper('C'))
 894                 exit(0);
 895         else
 896                 exit(1);
 897 }],
 898         [ol_cv_c_upper_lower=no],
 899         [ol_cv_c_upper_lower=yes],
 900         [ol_cv_c_upper_lower=safe])])
 901 if test $ol_cv_c_upper_lower != no ; then
 902         AC_DEFINE(C_UPPER_LOWER,1, [define if toupper() requires islower()])
 903 fi
 904 ])
 905 dnl
 906 dnl ====================================================================
 907 dnl Check for declaration of sys_errlist in one of stdio.h and errno.h.
 908 dnl Declaration of sys_errlist on BSD4.4 interferes with our declaration.
 909 dnl Reported by Keith Bostic.
 910 AC_DEFUN([OL_SYS_ERRLIST],
 911 [AC_CACHE_CHECK([declaration of sys_errlist],ol_cv_dcl_sys_errlist,[
 912         AC_TRY_COMPILE([
 913 #include <stdio.h>
 914 #include <sys/types.h>
 915 #include <errno.h>
 916 #ifdef WINNT
 917 #include <stdlib.h>
 918 #endif ],
 919         [char *c = (char *) *sys_errlist],
 920         [ol_cv_dcl_sys_errlist=yes
 921         ol_cv_have_sys_errlist=yes],
 922         [ol_cv_dcl_sys_errlist=no])])
 923 #
 924 # It's possible (for near-UNIX clones) that sys_errlist doesn't exist
 925 if test $ol_cv_dcl_sys_errlist = no ; then
 926         AC_DEFINE(DECL_SYS_ERRLIST,1,
 927                 [define if sys_errlist is not declared in stdio.h or errno.h])
 928
 929         AC_CACHE_CHECK([existence of sys_errlist],ol_cv_have_sys_errlist,[
 930                 AC_TRY_LINK([#include <errno.h>],
 931                         [char *c = (char *) *sys_errlist],
 932                         [ol_cv_have_sys_errlist=yes],
 933                         [ol_cv_have_sys_errlist=no])])
 934 fi
 935 if test $ol_cv_have_sys_errlist = yes ; then
 936         AC_DEFINE(HAVE_SYS_ERRLIST,1,
 937                 [define if you actually have sys_errlist in your libs])
 938 fi
 939 ])dnl
 940 dnl
 941 dnl ====================================================================
 942 dnl Early MIPS compilers (used in Ultrix 4.2) don't like
 943 dnl "int x; int *volatile a = &x; *a = 0;"
 944 dnl     -- borrowed from PDKSH
 945 AC_DEFUN(OL_C_VOLATILE,
 946  [AC_CACHE_CHECK(if compiler understands volatile, ol_cv_c_volatile,
 947     [AC_TRY_COMPILE([int x, y, z;],
 948       [volatile int a; int * volatile b = x ? &y : &z;
 949       /* Older MIPS compilers (eg., in Ultrix 4.2) don't like *b = 0 */
 950       *b = 0;], ol_cv_c_volatile=yes, ol_cv_c_volatile=no)])
 951   if test $ol_cv_c_volatile = yes; then
 952     :
 953   else
 954     AC_DEFINE(volatile,,[define as empty if volatile is not supported])
 955   fi
 956  ])dnl
 957 dnl
 958 dnl ====================================================================
 959 dnl Look for fetch(3)
 960 AC_DEFUN([OL_LIB_FETCH],
 961 [ol_LIBS=$LIBS
 962 LIBS="-lfetch -lcom_err $LIBS"
 963 AC_CACHE_CHECK([fetch(3) library],ol_cv_lib_fetch,[
 964         AC_TRY_LINK([
 965 #include <sys/param.h>
 966 #include <stdio.h>
 967 #include <fetch.h>],
 968         [struct url *u = fetchParseURL("file:///"); ],
 969         [ol_cv_lib_fetch=yes],
 970         [ol_cv_lib_fetch=no])])
 971 LIBS=$ol_LIBS
 972 if test $ol_cv_lib_fetch != no ; then
 973         ol_link_fetch="-lfetch -lcom_err"
 974         AC_DEFINE(HAVE_FETCH,1,
 975                 [define if you actually have FreeBSD fetch(3)])
 976 fi
 977 ])dnl
 978 dnl
 979 dnl ====================================================================
 980 dnl Define sig_atomic_t if not defined in signal.h
 981 AC_DEFUN(OL_TYPE_SIG_ATOMIC_T,
 982  [AC_CACHE_CHECK(for sig_atomic_t, ol_cv_type_sig_atomic_t,
 983     [AC_TRY_COMPILE([#include <signal.h>], [sig_atomic_t atomic;],
 984                 ol_cv_type_sig_atomic_t=yes, ol_cv_type_sig_atomic_t=no)])
 985   if test $ol_cv_type_sig_atomic_t = no; then
 986     AC_DEFINE(sig_atomic_t,int,
 987                 [define to atomic type if sig_atomic_t is not available])
 988   fi
 989  ])dnl
 990 dnl
 991 dnl ====================================================================
 992 dnl Define socklen_t if not defined in sys/types.h or sys/socket.h
 993 AC_DEFUN(OL_TYPE_SOCKLEN_T,
 994  [AC_CACHE_CHECK(for socklen_t, ol_cv_type_socklen_t,
 995     [AC_TRY_COMPILE([
 996 #ifdef HAVE_SYS_TYPES_H
 997 #include <sys/types.h>
 998 #endif
 999 #ifdef HAVE_SYS_SOCKET_H
1000 #include <sys/socket.h>
1001 #endif
1002 ], [socklen_t len;],
1003                 ol_cv_type_socklen_t=yes, ol_cv_type_socklen_t=no)])
1004   if test $ol_cv_type_socklen_t = no; then
1005     AC_DEFINE(socklen_t, int,
1006                 [define to int if socklen_t is not available])
1007   fi
1008  ])dnl
1009 dnl
1010 dnl ====================================================================
1011 dnl Define inet_aton is available
1012 AC_DEFUN(OL_FUNC_INET_ATON,
1013  [AC_CACHE_CHECK([for inet_aton()], ol_cv_func_inet_aton,
1014     [AC_TRY_LINK([
1015 #ifdef HAVE_SYS_TYPES_H
1016 #       include <sys/types.h>
1017 #endif
1018 #ifdef HAVE_SYS_SOCKET_H
1019 #       include <sys/socket.h>
1020 #       ifdef HAVE_SYS_SELECT_H
1021 #               include <sys/select.h>
1022 #       endif
1023 #       include <netinet/in.h>
1024 #       ifdef HAVE_ARPA_INET_H
1025 #               include <arpa/inet.h>
1026 #       endif
1027 #endif
1028 ], [struct in_addr in;
1029 int rc = inet_aton( "255.255.255.255", &in );],
1030                 ol_cv_func_inet_aton=yes, ol_cv_func_inet_aton=no)])
1031   if test $ol_cv_func_inet_aton != no; then
1032     AC_DEFINE(HAVE_INET_ATON, 1,
1033                 [define to you inet_aton(3) is available])
1034   fi
1035  ])dnl
1036 dnl
1037 dnl ====================================================================
1038 dnl check no of arguments for ctime_r
1039 AC_DEFUN(OL_FUNC_CTIME_R_NARGS,
1040  [AC_CACHE_CHECK(number of arguments of ctime_r, ol_cv_func_ctime_r_nargs,
1041    [AC_TRY_COMPILE([#include <time.h>],
1042                 [time_t ti; char *buffer; ctime_r(&ti,buffer,32);],
1043                         ol_cv_func_ctime_r_nargs3=yes,
1044                         ol_cv_func_ctime_r_nargs3=no)
1045
1046         AC_TRY_COMPILE([#include <time.h>],
1047                 [time_t ti; char *buffer; ctime_r(&ti,buffer);],
1048                         ol_cv_func_ctime_r_nargs2=yes,
1049                         ol_cv_func_ctime_r_nargs2=no)
1050
1051         if test $ol_cv_func_ctime_r_nargs3 = yes -a \
1052                 $ol_cv_func_ctime_r_nargs2 = no ; then
1053
1054                 ol_cv_func_ctime_r_nargs=3
1055
1056         elif test $ol_cv_func_ctime_r_nargs3 = no -a \
1057                 $ol_cv_func_ctime_r_nargs2 = yes ; then
1058
1059                 ol_cv_func_ctime_r_nargs=2
1060
1061         else
1062                 ol_cv_func_ctime_r_nargs=0
1063         fi
1064   ])
1065
1066   if test $ol_cv_func_ctime_r_nargs -gt 1 ; then
1067         AC_DEFINE_UNQUOTED(CTIME_R_NARGS, $ol_cv_func_ctime_r_nargs,
1068                 [set to the number of arguments ctime_r() expects])
1069   fi
1070 ])dnl
1071 dnl
1072 dnl --------------------------------------------------------------------
1073 dnl check return type of ctime_r()
1074 AC_DEFUN(OL_FUNC_CTIME_R_TYPE,
1075  [AC_CACHE_CHECK(return type of ctime_r, ol_cv_func_ctime_r_type,
1076    [AC_TRY_COMPILE([#include <time.h>],
1077                 [extern int (ctime_r)();],
1078                         ol_cv_func_ctime_r_type="int", ol_cv_func_ctime_r_type="charp")
1079         ])
1080   if test $ol_cv_func_ctime_r_type = "int" ; then
1081         AC_DEFINE(CTIME_R_RETURNS_INT,1, [define if ctime_r() returns int])
1082   fi
1083 ])dnl
1084 dnl ====================================================================
1085 dnl check no of arguments for gethostbyname_r
1086 AC_DEFUN(OL_FUNC_GETHOSTBYNAME_R_NARGS,
1087  [AC_CACHE_CHECK(number of arguments of gethostbyname_r,
1088         ol_cv_func_gethostbyname_r_nargs,
1089         [AC_TRY_COMPILE([#include <sys/types.h>
1090 #include <sys/socket.h>
1091 #include <netinet/in.h>
1092 #include <netdb.h>
1093 #define BUFSIZE (sizeof(struct hostent)+10)],
1094                 [struct hostent hent; char buffer[BUFSIZE];
1095                 int bufsize=BUFSIZE;int h_errno;
1096                 (void)gethostbyname_r("segovia.cs.purdue.edu", &hent,
1097                         buffer, bufsize, &h_errno);],
1098                 ol_cv_func_gethostbyname_r_nargs5=yes,
1099                 ol_cv_func_gethostbyname_r_nargs5=no)
1100
1101         AC_TRY_COMPILE([#include <sys/types.h>
1102 #include <sys/socket.h>
1103 #include <netinet/in.h>
1104 #include <netdb.h>
1105 #define BUFSIZE (sizeof(struct hostent)+10)],
1106                 [struct hostent hent;struct hostent *rhent;
1107                 char buffer[BUFSIZE];
1108                 int bufsize=BUFSIZE;int h_errno;
1109                 (void)gethostbyname_r("localhost", &hent, buffer, bufsize,
1110                         &rhent, &h_errno);],
1111                 ol_cv_func_gethostbyname_r_nargs6=yes,
1112                 ol_cv_func_gethostbyname_r_nargs6=no)
1113
1114         if test $ol_cv_func_gethostbyname_r_nargs5 = yes -a \
1115                 $ol_cv_func_gethostbyname_r_nargs6 = no ; then
1116
1117                 ol_cv_func_gethostbyname_r_nargs=5
1118
1119         elif test $ol_cv_func_gethostbyname_r_nargs5 = no -a \
1120                 $ol_cv_func_gethostbyname_r_nargs6 = yes ; then
1121
1122                 ol_cv_func_gethostbyname_r_nargs=6
1123
1124         else
1125                 ol_cv_func_gethostbyname_r_nargs=0
1126         fi
1127   ])
1128   if test $ol_cv_func_gethostbyname_r_nargs -gt 1 ; then
1129         AC_DEFINE_UNQUOTED(GETHOSTBYNAME_R_NARGS,
1130                 $ol_cv_func_gethostbyname_r_nargs,
1131                 [set to the number of arguments gethostbyname_r() expects])
1132   fi
1133 ])dnl
1134 dnl
1135 dnl check no of arguments for gethostbyaddr_r
1136 AC_DEFUN(OL_FUNC_GETHOSTBYADDR_R_NARGS,
1137  [AC_CACHE_CHECK(number of arguments of gethostbyaddr_r,
1138         [ol_cv_func_gethostbyaddr_r_nargs],
1139         [AC_TRY_COMPILE([#include <sys/types.h>
1140 #include <sys/socket.h>
1141 #include <netinet/in.h>
1142 #include <netdb.h>
1143 #define BUFSIZE (sizeof(struct hostent)+10)],
1144            [struct hostent hent; char buffer[BUFSIZE];
1145             struct in_addr add;
1146             size_t alen=sizeof(struct in_addr);
1147             int bufsize=BUFSIZE;int h_errno;
1148                 (void)gethostbyaddr_r( (void *)&(add.s_addr),
1149                         alen, AF_INET, &hent, buffer, bufsize, &h_errno);],
1150                 ol_cv_func_gethostbyaddr_r_nargs7=yes,
1151                 ol_cv_func_gethostbyaddr_r_nargs7=no)
1152
1153         AC_TRY_COMPILE([#include <sys/types.h>
1154 #include <sys/socket.h>
1155 #include <netinet/in.h>
1156 #include <netdb.h>
1157 #define BUFSIZE (sizeof(struct hostent)+10)],
1158                 [struct hostent hent;
1159                 struct hostent *rhent; char buffer[BUFSIZE];
1160                 struct in_addr add;
1161                 size_t alen=sizeof(struct in_addr);
1162                 int bufsize=BUFSIZE;int h_errno;
1163                 (void)gethostbyaddr_r( (void *)&(add.s_addr),
1164                         alen, AF_INET, &hent, buffer, bufsize,
1165                         &rhent, &h_errno);],
1166                 ol_cv_func_gethostbyaddr_r_nargs8=yes,
1167                 ol_cv_func_gethostbyaddr_r_nargs8=no)
1168
1169         if test $ol_cv_func_gethostbyaddr_r_nargs7 = yes -a \
1170                 $ol_cv_func_gethostbyaddr_r_nargs8 = no ; then
1171
1172                 ol_cv_func_gethostbyaddr_r_nargs=7
1173
1174         elif test $ol_cv_func_gethostbyaddr_r_nargs7 = no -a \
1175                 $ol_cv_func_gethostbyaddr_r_nargs8 = yes ; then
1176
1177                 ol_cv_func_gethostbyaddr_r_nargs=8
1178
1179         else
1180                 ol_cv_func_gethostbyaddr_r_nargs=0
1181         fi
1182   ])
1183   if test $ol_cv_func_gethostbyaddr_r_nargs -gt 1 ; then
1184     AC_DEFINE_UNQUOTED(GETHOSTBYADDR_R_NARGS,
1185                 $ol_cv_func_gethostbyaddr_r_nargs,
1186                 [set to the number of arguments gethostbyaddr_r() expects])
1187   fi
1188 ])dnl
1189 dnl
1190 dnl --------------------------------------------------------------------
1191 dnl Check for Cyrus SASL version compatility, need 2.1.3 or newer
1192 AC_DEFUN([OL_SASL_COMPAT],
1193 [AC_CACHE_CHECK([Cyrus SASL library version], [ol_cv_sasl_compat],[
1194         AC_EGREP_CPP(__sasl_compat,[
1195 #ifdef HAVE_SASL_SASL_H
1196 #include <sasl/sasl.h>
1197 #else
1198 #include <sasl.h>
1199 #endif
1200
1201 /* require 2.1.3 or later */
1202 #if SASL_VERSION_MAJOR == 1  && SASL_VERSION_MINOR >= 5
1203         char *__sasl_compat = "1.5.x okay";
1204 #elif SASL_VERSION_MAJOR == 2  && SASL_VERSION_MINOR > 1
1205         __sasl_compat "2.2+ or better okay (we guess)";
1206 #elif SASL_VERSION_MAJOR == 2  && SASL_VERSION_MINOR == 1 \
1207         && SASL_VERSION_STEP >=3
1208         __sasl_compat = "2.1.3+ or better okay";
1209 #endif
1210         ],      [ol_cv_sasl_compat=yes], [ol_cv_sasl_compat=no])])
1211 ])