src/aclocal.m4

   1 AC_PREREQ(2.52)
   2 AC_COPYRIGHT([Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
   3 Massachusetts Institute of Technology.
   4 ])
   5 dnl
   6 dnl Figure out the top of the source and build trees.  We depend on localdir
   7 dnl being a relative pathname; we could make it general later, but for now
   8 dnl this is good enough.
   9 dnl
  10 dnl esyscmd([test -r aclocal.m4 && echo YES])
  11 define([fileexists],[dnl
  12 pushdef([x],esyscmd([if test -r $1; then echo YES;else echo NO; fi]))dnl
  13 dnl Strip out newline.
  14 ifelse(x,[YES
  15 ],[YES],x,[NO
  16 ],[NO],UNKNOWN)[]popdef([x])])
  17 define([K5_TOPDIR],dnl
  18 ifelse(fileexists(./aclocal.m4),YES,[.],[dnl
  19 ifelse(fileexists(../aclocal.m4),YES,[..],[dnl
  20 ifelse(fileexists(../../aclocal.m4),YES,[../..],[dnl
  21 ifelse(fileexists(../../../aclocal.m4),YES,[../../..],[dnl
  22 ifelse(fileexists(../../../../aclocal.m4),YES,[../../../..],[dnl
  23 errprint(__file__:__line__: Cannot find path to aclocal.m4[
  24 ])m4exit(1)UNKNOWN])])])])]))
  25 dnl
  26 AC_DEFUN(V5_SET_TOPDIR,[dnl
  27 ac_reltopdir="K5_TOPDIR"
  28 if test ! -r "$srcdir/K5_TOPDIR/aclocal.m4"; then
  29   AC_MSG_ERROR([Configure could not determine the relative topdir])
  30 fi
  31 ac_topdir=$srcdir/$ac_reltopdir
  32 ac_config_fragdir=$ac_reltopdir/config
  33 krb5_pre_in=$ac_config_fragdir/pre.in
  34 krb5_post_in=$ac_config_fragdir/post.in
  35 # echo "Looking for $srcdir/$ac_config_fragdir"
  36 if test -d "$srcdir/$ac_config_fragdir"; then
  37   AC_CONFIG_AUX_DIR(K5_TOPDIR/config)
  38 else
  39   AC_MSG_ERROR([can not find config/ directory in $ac_reltopdir])
  40 fi
  41 ])dnl
  42 dnl
  43 dnl drop in standard rules for all configure files -- CONFIG_RULES
  44 dnl
  45 AC_DEFUN(CONFIG_RULES,[dnl
  46 AC_REQUIRE([V5_SET_TOPDIR]) dnl
  47 EXTRA_FILES=""
  48 AC_SUBST(EXTRA_FILES)
  49 WITH_CC dnl
  50 AC_REQUIRE_CPP
  51 if test -z "$LD" ; then LD=$CC; fi
  52 AC_ARG_VAR(LD,[linker command [CC]])
  53 AC_SUBST(LDFLAGS) dnl
  54 WITH_KRB4 dnl
  55 KRB5_AC_CHOOSE_ET dnl
  56 KRB5_AC_CHOOSE_SS dnl
  57 KRB5_AC_CHOOSE_DB dnl
  58 dnl allow stuff in tree to access deprecated/private stuff for now
  59 AC_DEFINE([KRB5_PRIVATE], 1, [Define only if building in-tree])
  60 AC_DEFINE([KRB5_DEPRECATED], 1, [Define only if building in-tree])
  61 AC_C_CONST dnl
  62 WITH_NETLIB dnl
  63 WITH_HESIOD dnl
  64 KRB5_AC_MAINTAINER_MODE dnl
  65 AC_ARG_PROGRAM dnl
  66 dnl
  67 dnl This identifies the top of the source tree relative to the directory
  68 dnl in which the configure file lives.
  69 dnl
  70 CONFIG_RELTOPDIR=$ac_reltopdir
  71 AC_SUBST(CONFIG_RELTOPDIR)
  72 AC_SUBST(subdirs)
  73 lib_frag=$srcdir/$ac_config_fragdir/lib.in
  74 AC_SUBST_FILE(lib_frag)
  75 libobj_frag=$srcdir/$ac_config_fragdir/libobj.in
  76 AC_SUBST_FILE(libobj_frag)
  77 dnl
  78 KRB5_AC_PRAGMA_WEAK_REF
  79 KRB5_LIB_PARAMS
  80 KRB5_AC_INITFINI
  81 KRB5_AC_ENABLE_THREADS
  82 ])dnl
  83
  84 dnl Maintainer mode, akin to what automake provides, 'cept we don't
  85 dnl want to use automake right now.
  86 AC_DEFUN([KRB5_AC_MAINTAINER_MODE],
  87 [AC_ARG_ENABLE([maintainer-mode],
  88 AC_HELP_STRING([--enable-maintainer-mode],[enable rebuilding of source files, Makefiles, etc]),
  89 USE_MAINTAINER_MODE=$enableval,
  90 USE_MAINTAINER_MODE=no)
  91 if test "$USE_MAINTAINER_MODE" = yes; then
  92   MAINTAINER_MODE_TRUE=
  93   MAINTAINER_MODE_FALSE='#'
  94   AC_MSG_NOTICE(enabling maintainer mode)
  95 else
  96   MAINTAINER_MODE_TRUE='#'
  97   MAINTAINER_MODE_FALSE=
  98 fi
  99 MAINT=$MAINTAINER_MODE_TRUE
 100 AC_SUBST(MAINTAINER_MODE_TRUE)
 101 AC_SUBST(MAINTAINER_MODE_FALSE)
 102 AC_SUBST(MAINT)
 103 ])
 104
 105 dnl
 106 AC_DEFUN([KRB5_AC_INITFINI],[
 107 dnl Do we want initialization at load time?
 108 AC_ARG_ENABLE([delayed-initialization],
 109 AC_HELP_STRING([--disable-delayed-initialization],initialize library code when loaded @<:@delay until first use@:>@), , enable_delayed_initialization=yes)
 110 case "$enable_delayed_initialization" in
 111   yes)
 112     AC_DEFINE(DELAY_INITIALIZER,1,[Define if library initialization should be delayed until first use]) ;;
 113   no) ;;
 114   *)  AC_MSG_ERROR(invalid option $enable_delayed_initialization for delayed-initialization) ;;
 115 esac
 116 dnl We always want finalization at unload time.
 117 dnl
 118 dnl Can we do things through gcc?
 119 KRB5_AC_GCC_ATTRS
 120 dnl How about with the linker?
 121 if test -z "$use_linker_init_option" ; then
 122   AC_MSG_ERROR(ran INITFINI before checking shlib.conf?)
 123 fi
 124 if test "$use_linker_init_option" = yes; then
 125   AC_DEFINE(USE_LINKER_INIT_OPTION,1,[Define if link-time options for library initialization will be used])
 126 fi
 127 if test "$use_linker_fini_option" = yes; then
 128   AC_DEFINE(USE_LINKER_FINI_OPTION,1,[Define if link-time options for library finalization will be used])
 129 fi
 130 ])
 131
 132 dnl Hack for now.
 133 AC_DEFUN([KRB5_AC_ENABLE_THREADS],[
 134 AC_ARG_ENABLE([thread-support],
 135 AC_HELP_STRING([--disable-thread-support],don't enable thread support @<:@enabled@:>@), , enable_thread_support=yes)
 136 if test "$enable_thread_support" = yes ; then
 137   AC_MSG_NOTICE(enabling thread support)
 138   AC_DEFINE(ENABLE_THREADS,1,[Define if thread support enabled])
 139 fi
 140 dnl Maybe this should be inside the conditional above?  Doesn't cache....
 141 if test "$enable_thread_support" = yes; then
 142   ACX_PTHREAD(,[AC_MSG_ERROR([cannot determine options for enabling thread support; try --disable-thread-support])])
 143   AC_MSG_NOTICE(PTHREAD_CC = $PTHREAD_CC)
 144   AC_MSG_NOTICE(PTHREAD_CFLAGS = $PTHREAD_CFLAGS)
 145   AC_MSG_NOTICE(PTHREAD_LIBS = $PTHREAD_LIBS)
 146   dnl Not really needed -- if pthread.h isn't found, ACX_PTHREAD will fail.
 147   dnl AC_CHECK_HEADERS(pthread.h)
 148   # AIX and Tru64 don't support weak references, and don't have
 149   # stub versions of the pthread code in libc.
 150   case "${host_os}" in
 151     aix* | osf*)
 152       # On these platforms, we'll always pull in the thread support.
 153       LIBS="$LIBS $PTHREAD_LIBS"
 154       CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
 155       # We don't need to sometimes add the flags we've just folded in...
 156       PTHREAD_LIBS=
 157       PTHREAD_CFLAGS=
 158       ;;
 159     hpux*)
 160       # These are the flags that "gcc -pthread" adds.  But we don't
 161       # want "-pthread" because that has link-time effects, and we
 162       # don't exclude CFLAGS when linking.  *sigh*
 163       PTHREAD_CFLAGS="-D_REENTRANT -D_THREAD_SAFE -D_POSIX_C_SOURCE=199506L"
 164       ;;
 165   esac
 166   THREAD_SUPPORT=1
 167 else
 168   PTHREAD_CC="$CC"
 169   PTHREAD_CFLAGS=""
 170   PTHREAD_LIBS=""
 171   THREAD_SUPPORT=0
 172 fi
 173 AC_SUBST(THREAD_SUPPORT)
 174 dnl We want to know where these routines live, so on systems with weak
 175 dnl reference support we can figure out whether or not the pthread library
 176 dnl has been linked in.
 177 dnl If we don't add any libraries for thread support, don't bother.
 178 AC_CHECK_FUNCS(pthread_once pthread_mutexattr_setrobust_np pthread_rwlock_init)
 179 old_CC="$CC"
 180 test "$PTHREAD_CC" != "" && test "$ac_cv_c_compiler_gnu" = no && CC=$PTHREAD_CC
 181 old_CFLAGS="$CFLAGS"
 182 # On Solaris, -pthreads is added to CFLAGS, no extra explicit libraries.
 183 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
 184 AC_SUBST(PTHREAD_CFLAGS)
 185 old_LIBS="$LIBS"
 186 LIBS="$PTHREAD_LIBS $LIBS"
 187 AC_MSG_NOTICE(rechecking with PTHREAD_... options)
 188 AC_CHECK_LIB(c, pthread_mutexattr_setrobust_np,
 189   [AC_DEFINE(HAVE_PTHREAD_MUTEXATTR_SETROBUST_NP_IN_THREAD_LIB,1,[Define if pthread_mutexattr_setrobust_np is provided in the thread library.])])
 190 AC_CHECK_LIB(c, pthread_rwlock_init,
 191   [AC_DEFINE(HAVE_PTHREAD_RWLOCK_INIT_IN_THREAD_LIB,1,[Define if pthread_rwlock_init is provided in the thread library.])])
 192 LIBS="$old_LIBS"
 193 CC="$old_CC"
 194 CFLAGS="$old_CFLAGS"
 195 ])
 196
 197 dnl This is somewhat gross and should go away when the build system
 198 dnl is revamped. -- tlyu
 199 dnl DECLARE_SYS_ERRLIST - check for sys_errlist in libc
 200 dnl
 201 AC_DEFUN([DECLARE_SYS_ERRLIST],
 202 [AC_CACHE_CHECK([for sys_errlist declaration], krb5_cv_decl_sys_errlist,
 203 [AC_TRY_COMPILE([#include <stdio.h>
 204 #include <errno.h>], [1+sys_nerr;],
 205 krb5_cv_decl_sys_errlist=yes, krb5_cv_decl_sys_errlist=no)])
 206 # assume sys_nerr won't be declared w/o being in libc
 207 if test $krb5_cv_decl_sys_errlist = yes; then
 208   AC_DEFINE(SYS_ERRLIST_DECLARED,1,[Define if sys_errlist is defined in errno.h])
 209   AC_DEFINE(HAVE_SYS_ERRLIST,1,[Define if sys_errlist in libc])
 210 else
 211   # This means that sys_errlist is not declared in errno.h, but may still
 212   # be in libc.
 213   AC_CACHE_CHECK([for sys_errlist in libc], krb5_cv_var_sys_errlist,
 214   [AC_TRY_LINK([extern int sys_nerr;], [if (1+sys_nerr < 0) return 1;],
 215   krb5_cv_var_sys_errlist=yes, krb5_cv_var_sys_errlist=no;)])
 216   if test $krb5_cv_var_sys_errlist = yes; then
 217     AC_DEFINE(HAVE_SYS_ERRLIST,1,[Define if sys_errlist in libc])
 218     # Do this cruft for backwards compatibility for now.
 219     AC_DEFINE(NEED_SYS_ERRLIST,1,[Define if need to declare sys_errlist])
 220   else
 221     AC_MSG_WARN([sys_errlist is neither in errno.h nor in libc])
 222   fi
 223 fi])
 224
 225 dnl
 226 dnl check for sigmask/sigprocmask -- CHECK_SIGPROCMASK
 227 dnl
 228 AC_DEFUN(CHECK_SIGPROCMASK,[
 229 AC_MSG_CHECKING([for use of sigprocmask])
 230 AC_CACHE_VAL(krb5_cv_func_sigprocmask_use,
 231 [AC_TRY_LINK([#include <signal.h>], [sigprocmask(SIG_SETMASK,0,0);],
 232  krb5_cv_func_sigprocmask_use=yes,
 233 AC_TRY_LINK([#include <signal.h>], [sigmask(1);],
 234  krb5_cv_func_sigprocmask_use=no, krb5_cv_func_sigprocmask_use=yes))])
 235 AC_MSG_RESULT($krb5_cv_func_sigprocmask_use)
 236 if test $krb5_cv_func_sigprocmask_use = yes; then
 237  AC_DEFINE(USE_SIGPROCMASK)
 238 fi
 239 ])dnl
 240 dnl
 241 AC_DEFUN(AC_PROG_ARCHIVE, [AC_CHECK_PROG(ARCHIVE, ar, ar cqv, false)])dnl
 242 AC_DEFUN(AC_PROG_ARCHIVE_ADD, [AC_CHECK_PROG(ARADD, ar, ar cruv, false)])dnl
 243 dnl
 244 dnl check for <dirent.h> -- CHECK_DIRENT
 245 dnl (may need to be more complex later)
 246 dnl
 247 AC_DEFUN(CHECK_DIRENT,[
 248 AC_CHECK_HEADER(dirent.h,AC_DEFINE(USE_DIRENT_H,1,[Define if you have dirent.h functionality]))])dnl
 249 dnl
 250 dnl check if union wait is defined, or if WAIT_USES_INT -- CHECK_WAIT_TYPE
 251 dnl
 252 AC_DEFUN(CHECK_WAIT_TYPE,[
 253 AC_MSG_CHECKING([if argument to wait is int *])
 254 AC_CACHE_VAL(krb5_cv_struct_wait,
 255 dnl Test for prototype clash - if there is none - then assume int * works
 256 [AC_TRY_COMPILE([#include <sys/types.h>
 257 #include <sys/wait.h>
 258 extern pid_t wait(int *);],[], krb5_cv_struct_wait=no,dnl
 259 dnl Else fallback on old stuff
 260 [AC_TRY_COMPILE(
 261 [#include <sys/wait.h>], [union wait i;
 262 #ifdef WEXITSTATUS
 263   WEXITSTATUS (i);
 264 #endif
 265 ],
 266         krb5_cv_struct_wait=yes, krb5_cv_struct_wait=no)])])
 267 AC_MSG_RESULT($krb5_cv_struct_wait)
 268 if test $krb5_cv_struct_wait = no; then
 269         AC_DEFINE(WAIT_USES_INT,1,[Define if wait takes int as a argument])
 270 fi
 271 ])dnl
 272 dnl
 273 dnl check for POSIX signal handling -- CHECK_SIGNALS
 274 dnl
 275 AC_DEFUN(CHECK_SIGNALS,[
 276 AC_CHECK_FUNC(sigprocmask,
 277 AC_MSG_CHECKING(for sigset_t and POSIX_SIGNALS)
 278 AC_CACHE_VAL(krb5_cv_type_sigset_t,
 279 [AC_TRY_COMPILE(
 280 [#include <signal.h>],
 281 [sigset_t x],
 282 krb5_cv_type_sigset_t=yes, krb5_cv_type_sigset_t=no)])
 283 AC_MSG_RESULT($krb5_cv_type_sigset_t)
 284 if test $krb5_cv_type_sigset_t = yes; then
 285   AC_DEFINE(POSIX_SIGNALS,1,[Define if POSIX signal handling is used])
 286 fi
 287 )])dnl
 288 dnl
 289 dnl check for signal type
 290 dnl
 291 dnl AC_RETSIGTYPE isn't quite right, but almost.
 292 AC_DEFUN(KRB5_SIGTYPE,[
 293 AC_MSG_CHECKING([POSIX signal handlers])
 294 AC_CACHE_VAL(krb5_cv_has_posix_signals,
 295 [AC_TRY_COMPILE(
 296 [#include <sys/types.h>
 297 #include <signal.h>
 298 #ifdef signal
 299 #undef signal
 300 #endif
 301 extern void (*signal ()) ();], [],
 302 krb5_cv_has_posix_signals=yes, krb5_cv_has_posix_signals=no)])
 303 AC_MSG_RESULT($krb5_cv_has_posix_signals)
 304 if test $krb5_cv_has_posix_signals = yes; then
 305    stype=void
 306    AC_DEFINE(POSIX_SIGTYPE, 1, [Define if POSIX signal handlers are used])
 307 else
 308   if test $ac_cv_type_signal = void; then
 309      stype=void
 310   else
 311      stype=int
 312   fi
 313 fi
 314 AC_DEFINE_UNQUOTED(krb5_sigtype, $stype, [Define krb5_sigtype to type of signal handler])dnl
 315 ])dnl
 316 dnl
 317 dnl check for POSIX setjmp/longjmp -- CHECK_SETJMP
 318 dnl
 319 AC_DEFUN(CHECK_SETJMP,[
 320 AC_CHECK_FUNC(sigsetjmp,
 321 AC_MSG_CHECKING(for sigjmp_buf)
 322 AC_CACHE_VAL(krb5_cv_struct_sigjmp_buf,
 323 [AC_TRY_COMPILE(
 324 [#include <setjmp.h>],[sigjmp_buf x],
 325 krb5_cv_struct_sigjmp_buf=yes,krb5_cv_struct_sigjmp_buf=no)])
 326 AC_MSG_RESULT($krb5_cv_struct_sigjmp_buf)
 327 if test $krb5_cv_struct_sigjmp_buf = yes; then
 328   AC_DEFINE(POSIX_SETJMP)
 329 fi
 330 )])dnl
 331 dnl
 332 dnl Check for IPv6 compile-time support.
 333 dnl
 334 AC_DEFUN(KRB5_AC_INET6,[
 335 AC_CHECK_HEADERS(sys/types.h sys/socket.h netinet/in.h netdb.h)
 336 AC_CHECK_FUNCS(inet_ntop inet_pton getnameinfo)
 337 dnl getaddrinfo test needs netdb.h, for proper compilation on alpha
 338 dnl under OSF/1^H^H^H^H^HDigital^H^H^H^H^H^H^HTru64 UNIX, where it's
 339 dnl a macro
 340 AC_MSG_CHECKING(for getaddrinfo)
 341 AC_CACHE_VAL(ac_cv_func_getaddrinfo,
 342 [AC_TRY_LINK([#ifdef HAVE_NETDB_H
 343 #include <netdb.h>
 344 #endif],[
 345 struct addrinfo *ai;
 346 getaddrinfo("kerberos.mit.edu", "echo", 0, &ai);
 347 ], ac_cv_func_getaddrinfo=yes, ac_cv_func_getaddrinfo=no)])
 348 AC_MSG_RESULT($ac_cv_func_getaddrinfo)
 349 if test $ac_cv_func_getaddrinfo = yes; then
 350   AC_DEFINE(HAVE_GETADDRINFO,1,[Define if you have the getaddrinfo function])
 351 fi
 352 dnl
 353 AC_REQUIRE([KRB5_SOCKADDR_SA_LEN])dnl
 354 AC_ARG_ENABLE([ipv6],
 355 AC_HELP_STRING([--enable-ipv6],[turn on IPv6 support])
 356 AC_HELP_STRING([--disable-ipv6],[turn off IPv6 support @<:@enabled if available@:>@]), ,enableval=try)dnl
 357 case "$enableval" in
 358   yes | try)
 359         KRB5_AC_CHECK_INET6
 360         if test "$enableval/$krb5_cv_inet6" = yes/no ; then
 361           AC_MSG_ERROR(IPv6 support does not appear to be available)
 362         fi ;;
 363   no)   ;;
 364   *)    AC_MSG_ERROR(bad value "$enableval" for enable-ipv6 option) ;;
 365 esac
 366 ])dnl
 367 dnl
 368 AC_DEFUN(KRB5_AC_CHECK_TYPE_WITH_HEADERS,[
 369 AC_MSG_CHECKING(for type $1)
 370 changequote(<<,>>)dnl
 371 varname=`echo $1 | sed 's,[ -],_,g'`
 372 changequote([,])dnl
 373 AC_CACHE_VAL(krb5_cv_$varname,[
 374 AC_TRY_COMPILE([$2],[ $1 foo; ], eval krb5_cv_$varname=yes, eval krb5_cv_$varname=no)])
 375 eval x="\$krb5_cv_$varname"
 376 AC_MSG_RESULT($x)
 377 if eval test "$x" = yes ; then
 378   AC_DEFINE_UNQUOTED(HAVE_`echo $varname | tr [[[a-z]]] [[[A-Z]]]`)
 379 fi])
 380 dnl
 381 dnl
 382 AC_DEFUN(KRB5_AC_CHECK_SOCKADDR_STORAGE,[
 383 KRB5_AC_CHECK_TYPE_WITH_HEADERS(struct sockaddr_storage, [
 384 #ifdef HAVE_SYS_TYPES_H
 385 #include <sys/types.h>
 386 #endif
 387 #include <sys/socket.h>
 388 #include <netinet/in.h>
 389 ])])dnl
 390 dnl
 391 dnl
 392 AC_DEFUN(KRB5_AC_CHECK_INET6,[
 393 AC_REQUIRE([KRB5_AC_CHECK_SOCKADDR_STORAGE])dnl
 394 AC_MSG_CHECKING(for IPv6 compile-time support)
 395 AC_CACHE_VAL(krb5_cv_inet6,[
 396 if test "$ac_cv_func_inet_ntop" != "yes" ; then
 397   krb5_cv_inet6=no
 398 else
 399 AC_TRY_COMPILE([
 400 #ifdef HAVE_SYS_TYPES_H
 401 #include <sys/types.h>
 402 #endif
 403 #include <sys/socket.h>
 404 #include <netinet/in.h>
 405 #include <netdb.h>
 406 ],[
 407   struct sockaddr_in6 in;
 408   AF_INET6;
 409   IN6_IS_ADDR_LINKLOCAL (&in.sin6_addr);
 410 ],krb5_cv_inet6=yes,krb5_cv_inet6=no)])
 411 fi
 412 AC_MSG_RESULT($krb5_cv_inet6)
 413 if test "$krb5_cv_inet6" = no && test "$ac_cv_func_inet_ntop" = yes; then
 414 AC_MSG_CHECKING(for IPv6 compile-time support with -DINET6)
 415 AC_CACHE_VAL(krb5_cv_inet6_with_dinet6,[
 416 old_CC="$CC"
 417 CC="$CC -DINET6"
 418 AC_TRY_COMPILE([
 419 #ifdef HAVE_SYS_TYPES_H
 420 #include <sys/types.h>
 421 #endif
 422 #include <sys/socket.h>
 423 #include <netinet/in.h>
 424 #include <netdb.h>
 425 ],[
 426   struct sockaddr_in6 in;
 427   AF_INET6;
 428   IN6_IS_ADDR_LINKLOCAL (&in.sin6_addr);
 429 ],krb5_cv_inet6_with_dinet6=yes,krb5_cv_inet6_with_dinet6=no)
 430 CC="$old_CC"])
 431 AC_MSG_RESULT($krb5_cv_inet6_with_dinet6)
 432 fi
 433 if test $krb5_cv_inet6 = yes || test "$krb5_cv_inet6_with_dinet6" = yes; then
 434   if test "$krb5_cv_inet6_with_dinet6" = yes; then
 435     AC_DEFINE(INET6,1,[May need to be defined to enable IPv6 support, for example on IRIX])
 436   fi
 437   AC_DEFINE(KRB5_USE_INET6,1,[Define if we should compile in IPv6 support (even if we can't use it at run time)])
 438 fi
 439 ])dnl
 440 dnl
 441 dnl Generic File existence tests
 442 dnl
 443 dnl K5_AC_CHECK_FILE(FILE, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
 444 dnl
 445 AC_DEFUN(K5_AC_CHECK_FILE,
 446 [AC_REQUIRE([AC_PROG_CC])dnl
 447 dnl Do the transliteration at runtime so arg 1 can be a shell variable.
 448 ac_safe=`echo "$1" | sed 'y%./+-%__p_%'`
 449 AC_MSG_CHECKING([for $1])
 450 AC_CACHE_VAL(ac_cv_file_$ac_safe,
 451 [if test "$cross_compiling" = yes; then
 452   errprint(__file__:__line__: warning: Cannot check for file existence when cross compiling
 453 )dnl
 454   AC_MSG_ERROR(Cannot check for file existence when cross compiling)
 455 else
 456   if test -r $1; then
 457     eval "ac_cv_file_$ac_safe=yes"
 458   else
 459     eval "ac_cv_file_$ac_safe=no"
 460   fi
 461 fi])dnl
 462 if eval "test \"`echo '$ac_cv_file_'$ac_safe`\" = yes"; then
 463   AC_MSG_RESULT(yes)
 464   ifelse([$2], , :, [$2])
 465 else
 466   AC_MSG_RESULT(no)
 467 ifelse([$3], , , [$3
 468 np])dnl
 469 fi
 470 ])
 471 dnl
 472 dnl K5_AC_CHECK_FILES(FILE... [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
 473 dnl
 474 AC_DEFUN(K5_AC_CHECK_FILES,
 475 [AC_REQUIRE([AC_PROG_CC])dnl
 476 for ac_file in $1
 477 do
 478 K5_AC_CHECK_FILE($ac_file,
 479 [changequote(, )dnl
 480   ac_tr_file=HAVE`echo $ac_file | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
 481 changequote([, ])dnl
 482   AC_DEFINE_UNQUOTED($ac_tr_file) $2], $3)dnl
 483 done
 484 ])
 485 dnl
 486 dnl set $(KRB4) from --with-krb4=value -- WITH_KRB4
 487 dnl
 488 AC_DEFUN(WITH_KRB4,[
 489 AC_ARG_WITH([krb4],
 490 [  --without-krb4          don't include Kerberos V4 backwards compatibility
 491   --with-krb4             use V4 libraries included with V5 (default)
 492   --with-krb4=KRB4DIR     use preinstalled V4 libraries],
 493 ,
 494 withval=yes
 495 )dnl
 496 if test $withval = no; then
 497         AC_MSG_NOTICE(no krb4 support)
 498         KRB4_LIB=
 499         KRB4_DEPLIB=
 500         KRB4_INCLUDES=
 501         KRB4_LIBPATH=
 502         KRB_ERR_H_DEP=
 503         krb5_cv_build_krb4_libs=no
 504         krb5_cv_krb4_libdir=
 505 else
 506  AC_DEFINE([KRB5_KRB4_COMPAT], 1, [Define this if building with krb4 compat])
 507  if test $withval = yes; then
 508         AC_MSG_NOTICE(enabling built in krb4 support)
 509         KRB4_DEPLIB='$(TOPLIBD)/libkrb4$(DEPLIBEXT)'
 510         KRB4_LIB=-lkrb4
 511         KRB4_INCLUDES='-I$(SRCTOP)/include/kerberosIV -I$(BUILDTOP)/include/kerberosIV'
 512         KRB4_LIBPATH=
 513         KRB_ERR_H_DEP='$(BUILDTOP)/include/kerberosIV/krb_err.h'
 514         krb5_cv_build_krb4_libs=yes
 515         krb5_cv_krb4_libdir=
 516  else
 517         AC_MSG_NOTICE(using preinstalled krb4 in $withval)
 518         KRB4_LIB="-lkrb"
 519 dnl     DEPKRB4_LIB="$withval/lib/libkrb.a"
 520         KRB4_INCLUDES="-I$withval/include"
 521         KRB4_LIBPATH="-L$withval/lib"
 522         KRB_ERR_H_DEP=
 523         krb5_cv_build_krb4_libs=no
 524         krb5_cv_krb4_libdir="$withval/lib"
 525  fi
 526 fi
 527 AC_SUBST(KRB4_INCLUDES)
 528 AC_SUBST(KRB4_LIBPATH)
 529 AC_SUBST(KRB4_LIB)
 530 AC_SUBST(KRB4_DEPLIB)
 531 AC_SUBST(KRB_ERR_H_DEP)
 532 dnl We always compile the des425 library
 533 DES425_DEPLIB='$(TOPLIBD)/libdes425$(DEPLIBEXT)'
 534 DES425_LIB=-ldes425
 535 AC_SUBST(DES425_DEPLIB)
 536 AC_SUBST(DES425_LIB)
 537 ])dnl
 538 dnl
 539 dnl
 540 AC_DEFUN(KRB5_AC_CHECK_FOR_CFLAGS,[
 541 AC_BEFORE([$0],[AC_PROG_CC])
 542 krb5_ac_cflags_set=${CFLAGS+set}
 543 ])
 544 dnl
 545 AC_DEFUN(WITH_CC,[dnl
 546 AC_REQUIRE([KRB5_AC_CHECK_FOR_CFLAGS])dnl
 547 AC_REQUIRE([AC_PROG_CC])dnl
 548 krb5_cv_prog_gcc=$ac_cv_c_compiler_gnu
 549 if test $ac_cv_c_compiler_gnu = yes ; then
 550      HAVE_GCC=yes
 551      else HAVE_GCC=
 552 fi
 553 AC_SUBST(HAVE_GCC)
 554 AC_CACHE_CHECK([for GNU linker], krb5_cv_prog_gnu_ld,
 555 [krb5_cv_prog_gnu_ld=no
 556 if test "$GCC" = yes; then
 557   if AC_TRY_COMMAND([$CC -Wl,-v 2>&1 dnl
 558                         | grep "GNU ld" > /dev/null]); then
 559     krb5_cv_prog_gnu_ld=yes
 560   fi
 561 fi])
 562 # maybe add -Waggregate-return, or can we assume that actually works by now?
 563 # -Wno-comment used to be used for SunOS system header <sys/stream.h>
 564 # -Wno-long-long, if needed, for k5-platform.h without inttypes.h etc.
 565 extra_gcc_warn_opts="-Wall -Wmissing-prototypes -Wcast-qual \
 566  -Wcast-align -Wconversion -Wshadow"
 567 if test "$GCC" = yes ; then
 568   if test "x$krb5_ac_cflags_set" = xset ; then
 569     AC_MSG_NOTICE(not adding extra gcc warning flags because CFLAGS was set)
 570   else
 571     AC_MSG_NOTICE(adding extra warning flags for gcc)
 572     CFLAGS="$CFLAGS $extra_gcc_warn_opts"
 573     if test "`uname -s`" = Darwin ; then
 574       AC_MSG_NOTICE(skipping pedantic warnings on Darwin)
 575     else
 576       CFLAGS="$CFLAGS -pedantic"
 577     fi
 578   fi
 579   if test "`uname -s`" = Darwin ; then
 580     # Someday this should be a feature test.
 581     # One current (Jaguar = OS 10.2) problem:
 582     # Archive library with foo.o undef sym X and bar.o common sym X,
 583     # if foo.o is pulled in at link time, bar.o may not be, causing
 584     # the linker to complain.
 585     # Dynamic library problems too?
 586     case "$CC $CFLAGS" in
 587     *-fcommon*) ;; # why someone would do this, I don't know
 588     *-fno-common*) ;; # okay, they're already doing the right thing
 589     *)
 590       AC_MSG_NOTICE(disabling the use of common storage on Darwin)
 591       CFLAGS="$CFLAGS -fno-common"
 592       ;;
 593     esac
 594     case "$LD $LDFLAGS" in
 595     *-Wl,-search_paths_first*) ;;
 596     *) LDFLAGS="${LDFLAGS} -Wl,-search_paths_first" ;;
 597     esac
 598   fi
 599 else
 600   if test "`uname -s`" = AIX ; then
 601     # Using AIX but not GCC, assume native compiler.
 602     # The native compiler appears not to give a nonzero exit
 603     # status for certain classes of errors, like missing arguments
 604     # in function calls.  Let's try to fix that with -qhalt=e.
 605     case "$CC $CFLAGS" in
 606       *-qhalt=*) ;;
 607       *)
 608         CFLAGS="$CFLAGS -qhalt=e"
 609         AC_MSG_NOTICE(adding -qhalt=e for better error reporting)
 610         ;;
 611     esac
 612     # Also, the optimizer isn't turned on by default, which means
 613     # the static inline functions get left in random object files,
 614     # leading to references to pthread_mutex_lock from anything that
 615     # includes k5-int.h whether it uses threads or not.
 616     case "$CC $CFLAGS" in
 617       *-O*) ;;
 618       *)
 619         CFLAGS="$CFLAGS -O"
 620         AC_MSG_NOTICE(adding -O for inline thread-support function elimination)
 621         ;;
 622     esac
 623   fi
 624 fi
 625 ])dnl
 626 dnl
 627 dnl
 628 dnl check for yylineno -- HAVE_YYLINENO
 629 dnl
 630 AC_DEFUN(HAVE_YYLINENO,[dnl
 631 AC_REQUIRE_CPP()AC_REQUIRE([AC_PROG_LEX])dnl
 632 AC_MSG_CHECKING([for yylineno declaration])
 633 AC_CACHE_VAL(krb5_cv_type_yylineno,
 634 # some systems have yylineno, others don't...
 635   echo '%%
 636 %%' | ${LEX} -t > conftest.out
 637   if egrep yylineno conftest.out >/dev/null 2>&1; then
 638         krb5_cv_type_yylineno=yes
 639   else
 640         krb5_cv_type_yylineno=no
 641   fi
 642   rm -f conftest.out)
 643   AC_MSG_RESULT($krb5_cv_type_yylineno)
 644   if test $krb5_cv_type_yylineno = no; then
 645         AC_DEFINE(NO_YYLINENO, 1, [Define if lex produes code with yylineno])
 646   fi
 647 ])dnl
 648 dnl
 649 dnl K5_GEN_MAKEFILE([dir, [frags]])
 650 dnl
 651 AC_DEFUN(K5_GEN_MAKEFILE,[dnl
 652 ifelse($1, ,[_K5_GEN_MAKEFILE(.,$2)],[_K5_GEN_MAKEFILE($1,$2)])
 653 ])
 654 dnl
 655 dnl _K5_GEN_MAKEFILE(dir, [frags])
 656 dnl  dir must be present in this case
 657 dnl  Note: Be careful in quoting.
 658 dnl        The ac_foreach generates the list of fragments to include
 659 dnl        or "" if $2 is empty
 660 AC_DEFUN(_K5_GEN_MAKEFILE,[dnl
 661 AC_CONFIG_FILES([$1/Makefile:$krb5_pre_in:$1/Makefile.in:$krb5_post_in])
 662 ])
 663 dnl
 664 dnl K5_GEN_FILE( <ac_output arguments> )
 665 dnl
 666 AC_DEFUN(K5_GEN_FILE,[AC_CONFIG_FILES($1)])dnl
 667 dnl
 668 dnl K5_AC_OUTPUT
 669 dnl    Note: Adds the variables to config.status for individual
 670 dnl          Makefile generation from config.statsu
 671 AC_DEFUN(K5_AC_OUTPUT,[dnl
 672 AC_CONFIG_COMMANDS([krb5_config_prefix], [], dnl
 673  [krb5_pre_in=$krb5_pre_in
 674  ac_config_fragdir=$ac_config_fragdir
 675  krb5_post_in=$krb5_post_in])
 676 AC_OUTPUT])dnl
 677 dnl
 678 dnl V5_AC_OUTPUT_MAKEFILE
 679 dnl
 680 AC_DEFUN(V5_AC_OUTPUT_MAKEFILE,
 681 [ifelse($1, , [_V5_AC_OUTPUT_MAKEFILE(.,$2)],[_V5_AC_OUTPUT_MAKEFILE($1,$2)])])
 682 dnl
 683 define(_V5_AC_OUTPUT_MAKEFILE,
 684 [ifelse($2, , ,AC_CONFIG_FILES($2))
 685 AC_FOREACH([DIR], [$1],dnl
 686  [AC_CONFIG_FILES(DIR[/Makefile:$krb5_pre_in:]DIR[/Makefile.in:$krb5_post_in])])
 687 K5_AC_OUTPUT])dnl
 688 dnl
 689 dnl
 690 dnl KRB5_SOCKADDR_SA_LEN: define HAVE_SA_LEN if sockaddr contains the sa_len
 691 dnl component
 692 dnl
 693 AC_DEFUN([KRB5_SOCKADDR_SA_LEN],[ dnl
 694 AC_MSG_CHECKING(whether struct sockaddr contains sa_len)
 695 AC_CACHE_VAL(krb5_cv_sockaddr_sa_len,
 696 [AC_TRY_COMPILE([#include <sys/types.h>
 697 #include <sys/socket.h>
 698 ],
 699 [struct sockaddr sa;
 700 sa.sa_len;],
 701 krb5_cv_sockaddr_sa_len=yes,krb5_cv_sockaddr_sa_len=no)])
 702 AC_MSG_RESULT([$]krb5_cv_sockaddr_sa_len)
 703 if test $krb5_cv_sockaddr_sa_len = yes; then
 704    AC_DEFINE_UNQUOTED(HAVE_SA_LEN,1,[Define if struct sockaddr contains sa_len])
 705    fi
 706 ])
 707 dnl
 708 dnl
 709 dnl CHECK_UTMP: check utmp structure and functions
 710 dnl
 711 AC_DEFUN(CHECK_UTMP,[
 712 AC_MSG_CHECKING([ut_pid in struct utmp])
 713 AC_CACHE_VAL(krb5_cv_struct_ut_pid,
 714 [AC_TRY_COMPILE(
 715 [#include <sys/types.h>
 716 #include <utmp.h>],
 717 [struct utmp ut; ut.ut_pid;],
 718 krb5_cv_struct_ut_pid=yes, krb5_cv_struct_ut_pid=no)])
 719 AC_MSG_RESULT($krb5_cv_struct_ut_pid)
 720 if test $krb5_cv_struct_ut_pid = no; then
 721   AC_DEFINE(NO_UT_PID)
 722 fi
 723 AC_MSG_CHECKING([ut_type in struct utmp])
 724 AC_CACHE_VAL(krb5_cv_struct_ut_type,
 725 [AC_TRY_COMPILE(
 726 [#include <sys/types.h>
 727 #include <utmp.h>],
 728 [struct utmp ut; ut.ut_type;],
 729 krb5_cv_struct_ut_type=yes, krb5_cv_struct_ut_type=no)])
 730 AC_MSG_RESULT($krb5_cv_struct_ut_type)
 731 if test $krb5_cv_struct_ut_type = no; then
 732   AC_DEFINE(NO_UT_TYPE)
 733 fi
 734 AC_MSG_CHECKING([ut_host in struct utmp])
 735 AC_CACHE_VAL(krb5_cv_struct_ut_host,
 736 [AC_TRY_COMPILE(
 737 [#include <sys/types.h>
 738 #include <utmp.h>],
 739 [struct utmp ut; ut.ut_host;],
 740 krb5_cv_struct_ut_host=yes, krb5_cv_struct_ut_host=no)])
 741 AC_MSG_RESULT($krb5_cv_struct_ut_host)
 742 if test $krb5_cv_struct_ut_host = no; then
 743   AC_DEFINE(NO_UT_HOST)
 744 fi
 745 AC_MSG_CHECKING([ut_exit in struct utmp])
 746 AC_CACHE_VAL(krb5_cv_struct_ut_exit,
 747 [AC_TRY_COMPILE(
 748 [#include <sys/types.h>
 749 #include <utmp.h>],
 750 [struct utmp ut; ut.ut_exit;],
 751 krb5_cv_struct_ut_exit=yes, krb5_cv_struct_ut_exit=no)])
 752 AC_MSG_RESULT($krb5_cv_struct_ut_exit)
 753 if test $krb5_cv_struct_ut_exit = no; then
 754   AC_DEFINE(NO_UT_EXIT)
 755 fi
 756 AC_CHECK_FUNC(setutent,AC_DEFINE(HAVE_SETUTENT))
 757 AC_CHECK_FUNC(setutxent,AC_DEFINE(HAVE_SETUTXENT))
 758 AC_CHECK_FUNC(updwtmp,AC_DEFINE(HAVE_UPDWTMP))
 759 AC_CHECK_FUNC(updwtmpx,AC_DEFINE(HAVE_UPDWTMPX))
 760 ])dnl
 761 dnl
 762 dnl WITH_NETLIB
 763 dnl
 764 dnl
 765 AC_DEFUN(WITH_NETLIB,[
 766 AC_ARG_WITH([netlib],
 767 AC_HELP_STRING([--with-netlib=LIBS], use user defined resolver library),
 768 [  if test "$withval" = yes -o "$withval" = no ; then
 769         AC_MSG_RESULT("netlib will link with C library resolver only")
 770   else
 771         LIBS="$LIBS $withval"
 772         AC_MSG_RESULT("netlib will use \'$withval\'")
 773   fi
 774 ],dnl
 775 [AC_LIBRARY_NET]
 776 )])dnl
 777 dnl
 778 dnl
 779 AC_DEFUN(KRB5_AC_NEED_DAEMON, [
 780 KRB5_NEED_PROTO([#ifdef HAVE_UNISTD_H
 781 #include <unistd.h>
 782 #endif],daemon,1)])dnl
 783 dnl
 784 dnl Check if stdarg or varargs is available *and compiles*; prefer stdarg.
 785 dnl (This was sent to djm for incorporation into autoconf 3/12/1996.  KR)
 786 dnl
 787 AC_DEFUN(AC_HEADER_STDARG, [
 788
 789 AC_MSG_CHECKING([for stdarg.h])
 790 AC_CACHE_VAL(ac_cv_header_stdarg_h,
 791 [AC_TRY_COMPILE([#include <stdarg.h>], [
 792   } /* ac_try_compile will have started a function body */
 793   int aoeu (char *format, ...) {
 794     va_list v;
 795     int i;
 796     va_start (v, format);
 797     i = va_arg (v, int);
 798     va_end (v);
 799 ],ac_cv_header_stdarg_h=yes,ac_cv_header_stdarg_h=no)])dnl
 800 AC_MSG_RESULT($ac_cv_header_stdarg_h)
 801 if test $ac_cv_header_stdarg_h = yes; then
 802   AC_DEFINE(HAVE_STDARG_H, 1, [Define if stdarg available and compiles])
 803 else
 804
 805 AC_MSG_CHECKING([for varargs.h])
 806 AC_CACHE_VAL(ac_cv_header_varargs_h,
 807 [AC_TRY_COMPILE([#include <varargs.h>],[
 808   } /* ac_try_compile will have started a function body */
 809   int aoeu (va_alist) va_dcl {
 810     va_list v;
 811     int i;
 812     va_start (v);
 813     i = va_arg (v, int);
 814     va_end (v);
 815 ],ac_cv_header_varargs_h=yes,ac_cv_header_varargs_h=no)])dnl
 816 AC_MSG_RESULT($ac_cv_header_varargs_h)
 817 if test $ac_cv_header_varargs_h = yes; then
 818   AC_DEFINE(HAVE_VARARGS_H, 1, [Define if varargs available and compiles])
 819 else
 820   AC_MSG_ERROR(Neither stdarg nor varargs compile?)
 821 fi
 822
 823 fi dnl stdarg test failure
 824
 825 ])dnl
 826
 827 dnl
 828 dnl KRB5_AC_NEED_LIBGEN --- check if libgen needs to be linked in for
 829 dnl                             compile/step
 830 dnl
 831 dnl
 832 AC_DEFUN(KRB5_AC_NEED_LIBGEN,[
 833 AC_REQUIRE([AC_PROG_CC])dnl
 834 dnl
 835 dnl regcomp is present but non-functional on Solaris 2.4
 836 dnl
 837 AC_MSG_CHECKING(for working regcomp)
 838 AC_CACHE_VAL(ac_cv_func_regcomp,[
 839 AC_TRY_RUN([
 840 #include <sys/types.h>
 841 #include <regex.h>
 842 regex_t x; regmatch_t m;
 843 int main() { return regcomp(&x,"pat.*",0) || regexec(&x,"pattern",1,&m,0); }
 844 ], ac_cv_func_regcomp=yes, ac_cv_func_regcomp=no, AC_MSG_ERROR([Cannot test regcomp when cross compiling]))])
 845 AC_MSG_RESULT($ac_cv_func_regcomp)
 846 test $ac_cv_func_regcomp = yes && AC_DEFINE(HAVE_REGCOMP,1,[Define if regcomp exists and functions])
 847 dnl
 848 dnl Check for the compile and step functions - only if regcomp is not available
 849 dnl
 850 if test $ac_cv_func_regcomp = no; then
 851  save_LIBS="$LIBS"
 852  LIBS=-lgen
 853 dnl this will fail if there's no compile/step in -lgen, or if there's
 854 dnl no -lgen.  This is fine.
 855  AC_CHECK_FUNCS(compile step)
 856  LIBS="$save_LIBS"
 857 dnl
 858 dnl Set GEN_LIB if necessary
 859 dnl
 860  AC_CHECK_LIB(gen, compile, GEN_LIB=-lgen, GEN_LIB=)
 861  AC_SUBST(GEN_LIB)
 862 fi
 863 ])
 864 dnl
 865 dnl KRB5_AC_REGEX_FUNCS --- check for different regular expression
 866 dnl                             support functions
 867 dnl
 868 AC_DEFUN(KRB5_AC_REGEX_FUNCS,[
 869 AC_CHECK_FUNCS(re_comp re_exec regexec)
 870 AC_REQUIRE([KRB5_AC_NEED_LIBGEN])dnl
 871 ])dnl
 872 dnl
 873 dnl AC_KRB5_TCL_FIND_CONFIG (uses tcl_dir)
 874 dnl
 875 AC_DEFUN(AC_KRB5_TCL_FIND_CONFIG,[
 876 AC_REQUIRE([KRB5_LIB_AUX])dnl
 877 AC_MSG_CHECKING(for tclConfig.sh)
 878 if test -r "$tcl_dir/lib/tclConfig.sh" ; then
 879   tcl_conf="$tcl_dir/lib/tclConfig.sh"
 880 elif test -r "$tcl_dir/tclConfig.sh" ; then
 881   tcl_conf="$tcl_dir/tclConfig.sh"
 882 else
 883   tcl_conf=
 884   lib="$tcl_dir/lib"
 885   changequote(<<,>>)dnl
 886   for d in "$lib" "$lib"/tcl7.[0-9] "$lib"/tcl8.[0-9] ; do
 887     if test -r "$d/tclConfig.sh" ; then
 888       tcl_conf="$tcl_conf $d/tclConfig.sh"
 889     fi
 890   done
 891   changequote([,])dnl
 892 fi
 893 if test -n "$tcl_conf" ; then
 894   AC_MSG_RESULT($tcl_conf)
 895 else
 896   AC_MSG_RESULT(not found)
 897 fi
 898 tcl_ok_conf=
 899 tcl_vers_maj=
 900 tcl_vers_min=
 901 old_CPPFLAGS=$CPPFLAGS
 902 old_LIBS=$LIBS
 903 old_LDFLAGS=$LDFLAGS
 904 if test -n "$tcl_conf" ; then
 905   for file in $tcl_conf ; do
 906     TCL_MAJOR_VERSION=x ; TCL_MINOR_VERSION=x
 907     AC_MSG_CHECKING(Tcl info in $file)
 908     . $file
 909     v=$TCL_MAJOR_VERSION.$TCL_MINOR_VERSION
 910     if test -z "$tcl_vers_maj" \
 911         || test "$tcl_vers_maj" -lt "$TCL_MAJOR_VERSION" \
 912         || test "$tcl_vers_maj" = "$TCL_MAJOR_VERSION" -a "$tcl_vers_min" -lt "$TCL_MINOR_VERSION" ; then
 913       for incdir in "$TCL_PREFIX/include/tcl$v" "$TCL_PREFIX/include" ; do
 914         if test -r "$incdir/tcl.h" -o -r "$incdir/tcl/tcl.h" ; then
 915           CPPFLAGS="$old_CPPFLAGS -I$incdir"
 916           break
 917         fi
 918       done
 919       LIBS="$old_LIBS `eval echo x $TCL_LIB_SPEC $TCL_LIBS | sed 's/^x//'`"
 920       LDFLAGS="$old_LDFLAGS $TCL_LD_FLAGS"
 921       AC_TRY_LINK( , [Tcl_CreateInterp ();],
 922         tcl_ok_conf=$file
 923         tcl_vers_maj=$TCL_MAJOR_VERSION
 924         tcl_vers_min=$TCL_MINOR_VERSION
 925         AC_MSG_RESULT($v - working),
 926         AC_MSG_RESULT($v - compilation failed)
 927       )
 928     else
 929       AC_MSG_RESULT(older version $v)
 930     fi
 931   done
 932 fi
 933 CPPFLAGS=$old_CPPFLAGS
 934 LIBS=$old_LIBS
 935 LDFLAGS=$old_LDFLAGS
 936 tcl_header=no
 937 tcl_lib=no
 938 if test -n "$tcl_ok_conf" ; then
 939   . $tcl_ok_conf
 940   TCL_INCLUDES=
 941   for incdir in "$TCL_PREFIX/include/tcl$v" "$TCL_PREFIX/include" ; do
 942     if test -r "$incdir/tcl.h" -o -r "$incdir/tcl/tcl.h" ; then
 943       if test "$incdir" != "/usr/include" ; then
 944         TCL_INCLUDES=-I$incdir
 945       fi
 946       break
 947     fi
 948   done
 949   # Need eval because the first-level expansion could reference
 950   # variables like ${TCL_DBGX}.
 951   eval TCL_LIBS='"'$TCL_LIB_SPEC $TCL_LIBS $TCL_DL_LIBS'"'
 952   TCL_LIBPATH="-L$TCL_EXEC_PREFIX/lib"
 953   TCL_RPATH=":$TCL_EXEC_PREFIX/lib"
 954   if test "$DEPLIBEXT" != "$SHLIBEXT" && test -n "$RPATH_FLAG"; then
 955     TCL_MAYBE_RPATH='$(RPATH_FLAG)'"$TCL_EXEC_PREFIX/lib$RPATH_TAIL"
 956   else
 957     TCL_MAYBE_RPATH=
 958   fi
 959   CPPFLAGS="$old_CPPFLAGS $TCL_INCLUDES"
 960   AC_CHECK_HEADER(tcl.h,AC_DEFINE(HAVE_TCL_H,1,[Define if tcl.h is available]) tcl_header=yes)
 961   if test $tcl_header=no; then
 962      AC_CHECK_HEADER(tcl/tcl.h,AC_DEFINE(HAVE_TCL_TCL_H,1,[Define if tcl/tcl.h is available]) tcl_header=yes)
 963   fi
 964   CPPFLAGS="$old_CPPFLAGS"
 965   tcl_lib=yes
 966 else
 967   # If we read a tclConfig.sh file, it probably set this.
 968   TCL_LIBS=
 969 fi
 970 AC_SUBST(TCL_INCLUDES)
 971 AC_SUBST(TCL_LIBS)
 972 AC_SUBST(TCL_LIBPATH)
 973 AC_SUBST(TCL_RPATH)
 974 AC_SUBST(TCL_MAYBE_RPATH)
 975 ])dnl
 976 dnl
 977 dnl AC_KRB5_TCL_TRYOLD
 978 dnl attempt to use old search algorithm for locating tcl
 979 dnl
 980 AC_DEFUN(AC_KRB5_TCL_TRYOLD, [
 981 AC_MSG_WARN([trying old tcl search code])
 982 if test "$with_tcl" != yes -a "$with_tcl" != no; then
 983         TCL_INCLUDES=-I$with_tcl/include
 984         TCL_LIBPATH=-L$with_tcl/lib
 985         TCL_RPATH=:$with_tcl/lib
 986 fi
 987 if test "$with_tcl" != no ; then
 988         AC_CHECK_LIB(dl, dlopen, DL_LIB=-ldl)
 989         AC_CHECK_LIB(ld, main, DL_LIB=-lld)
 990         krb5_save_CPPFLAGS="$CPPFLAGS"
 991         krb5_save_LDFLAGS="$LDFLAGS"
 992         CPPFLAGS="$CPPFLAGS $TCL_INCLUDES"
 993         LDFLAGS="$LDFLAGS $TCL_LIBPATH"
 994         tcl_header=no
 995         AC_CHECK_HEADER(tcl.h,AC_DEFINE(HAVE_TCL_H) tcl_header=yes)
 996         if test $tcl_header=no; then
 997            AC_CHECK_HEADER(tcl/tcl.h,AC_DEFINE(HAVE_TCL_TCL_H) tcl_header=yes)
 998         fi
 999
1000         if test $tcl_header = yes ; then
1001                 tcl_lib=no
1002
1003                 if test $tcl_lib = no; then
1004                         AC_CHECK_LIB(tcl8.0, Tcl_CreateCommand,
1005                                 TCL_LIBS="$TCL_LIBS -ltcl8.0 -lm $DL_LIB"
1006                                 tcl_lib=yes,,-lm $DL_LIB)
1007                 fi
1008                 if test $tcl_lib = no; then
1009                         AC_CHECK_LIB(tcl7.6, Tcl_CreateCommand,
1010                                 TCL_LIBS="$TCL_LIBS -ltcl7.6 -lm $DL_LIB"
1011                                 tcl_lib=yes,,-lm $DL_LIB)
1012                 fi
1013                 if test $tcl_lib = no; then
1014                         AC_CHECK_LIB(tcl7.5, Tcl_CreateCommand,
1015                                 TCL_LIBS="$TCL_LIBS -ltcl7.5 -lm $DL_LIB"
1016                                 tcl_lib=yes,,-lm $DL_LIB)
1017
1018                 fi
1019                 if test $tcl_lib = no ; then
1020                         AC_CHECK_LIB(tcl, Tcl_CreateCommand,
1021                                 TCL_LIBS="$TCL_LIBS -ltcl -lm $DL_LIB"
1022                                 tcl_lib=yes,,-lm $DL_LIB)
1023
1024                 fi
1025                 if test $tcl_lib = no ; then
1026                         AC_MSG_WARN("tcl.h found but not library")
1027                 fi
1028         else
1029                 AC_MSG_WARN(Could not find Tcl which is needed for the kadm5 tests)
1030                 TCL_LIBS=
1031         fi
1032         CPPFLAGS="$krb5_save_CPPFLAGS"
1033         LDFLAGS="$krb5_save_LDFLAGS"
1034         AC_SUBST(TCL_INCLUDES)
1035         AC_SUBST(TCL_LIBS)
1036         AC_SUBST(TCL_LIBPATH)
1037         AC_SUBST(TCL_RPATH)
1038 else
1039         AC_MSG_RESULT("Not looking for Tcl library")
1040 fi
1041 ])dnl
1042 dnl
1043 dnl AC_KRB5_TCL - determine if the TCL library is present on system
1044 dnl
1045 AC_DEFUN(AC_KRB5_TCL,[
1046 TCL_INCLUDES=
1047 TCL_LIBPATH=
1048 TCL_RPATH=
1049 TCL_LIBS=
1050 TCL_WITH=
1051 tcl_dir=
1052 AC_ARG_WITH(tcl,
1053 [  --with-tcl=path         where Tcl resides], , with_tcl=try)
1054 if test "$with_tcl" = no ; then
1055   true
1056 elif test "$with_tcl" = yes -o "$with_tcl" = try ; then
1057   tcl_dir=/usr
1058   if test ! -r /usr/lib/tclConfig.sh; then
1059     cat >> conftest <<\EOF
1060 puts "tcl_dir=$tcl_library"
1061 EOF
1062     if tclsh conftest >conftest.out 2>/dev/null; then
1063       if grep tcl_dir= conftest.out >/dev/null 2>&1; then
1064         t=`sed s/tcl_dir=// conftest.out`
1065         tcl_dir=$t
1066       fi
1067     fi # tclsh ran script okay
1068   rm -f conftest conftest.out
1069   fi # no /usr/lib/tclConfig.sh
1070 else
1071   tcl_dir=$with_tcl
1072 fi
1073 if test "$with_tcl" != no ; then
1074   AC_KRB5_TCL_FIND_CONFIG
1075   if test $tcl_lib = no ; then
1076     if test "$with_tcl" != try ; then
1077       AC_KRB5_TCL_TRYOLD
1078     else
1079       AC_MSG_WARN(Could not find Tcl which is needed for some tests)
1080     fi
1081   fi
1082 fi
1083 # If "yes" or pathname, error out if not found.
1084 if test "$with_tcl" != no -a "$with_tcl" != try ; then
1085   if test "$tcl_header $tcl_lib" != "yes yes" ; then
1086     AC_MSG_ERROR(Could not find Tcl)
1087   fi
1088 fi
1089 ])dnl
1090
1091 dnl
1092 dnl WITH_HESIOD
1093 dnl
1094 AC_DEFUN(WITH_HESIOD,
1095 [AC_ARG_WITH(hesiod, AC_HELP_STRING(--with-hesiod[=path], compile with hesiod support @<:@omitted@:>@),
1096         hesiod=$with_hesiod, with_hesiod=no)
1097 if test "$with_hesiod" != "no"; then
1098         HESIOD_DEFS=-DHESIOD
1099         AC_CHECK_LIB(resolv, res_send, res_lib=-lresolv)
1100         if test "$hesiod" != "yes"; then
1101                 HESIOD_LIBS="-L${hesiod}/lib -lhesiod $res_lib"
1102         else
1103                 HESIOD_LIBS="-lhesiod $res_lib"
1104         fi
1105 else
1106         HESIOD_DEFS=
1107         HESIOD_LIBS=
1108 fi
1109 AC_SUBST(HESIOD_DEFS)
1110 AC_SUBST(HESIOD_LIBS)])
1111
1112
1113 dnl
1114 dnl KRB5_BUILD_LIBRARY
1115 dnl
1116 dnl Pull in the necessary stuff to create the libraries.
1117
1118 AC_DEFUN(KRB5_BUILD_LIBRARY,
1119 [KRB5_BUILD_LIBRARY_WITH_DEPS
1120 # null out SHLIB_EXPFLAGS because we lack any dependencies
1121 SHLIB_EXPFLAGS=])
1122
1123 dnl
1124 dnl KRB5_BUILD_LIBRARY_STATIC
1125 dnl
1126 dnl Force static library build.
1127
1128 AC_DEFUN(KRB5_AC_FORCE_STATIC,[dnl
1129 AC_BEFORE([$0],[KRB5_LIB_AUX])dnl
1130 krb5_force_static=yes])
1131 AC_DEFUN(KRB5_BUILD_LIBRARY_STATIC,
1132 dnl Use define rather than AC_DEFUN to avoid ordering problems.
1133 [AC_REQUIRE([KRB5_AC_FORCE_STATIC])dnl
1134 KRB5_BUILD_LIBRARY
1135 # If we're only building static libraries, they're for build-time use only,
1136 # so don't install.
1137 LIBINSTLIST=])
1138
1139 dnl
1140 dnl KRB5_BUILD_LIBRARY_WITH_DEPS
1141 dnl
1142 dnl Like KRB5_BUILD_LIBRARY, but adds in explicit dependencies in the
1143 dnl generated shared library.
1144
1145 AC_DEFUN(KRB5_BUILD_LIBRARY_WITH_DEPS,
1146 [AC_REQUIRE([KRB5_LIB_AUX])dnl
1147 AC_REQUIRE([AC_PROG_LN_S])dnl
1148 AC_REQUIRE([AC_PROG_RANLIB])dnl
1149 AC_REQUIRE([AC_PROG_ARCHIVE])dnl
1150 AC_REQUIRE([AC_PROG_ARCHIVE_ADD])dnl
1151 AC_REQUIRE([AC_PROG_INSTALL])dnl
1152 AC_CHECK_PROG(AR, ar, ar, false)
1153 AC_CHECK_PROG(PERL, perl, perl, false)
1154 if test "$ac_cv_prog_PERL" = "false"; then
1155   AC_MSG_ERROR(Perl is now required for Kerberos builds.)
1156 fi
1157 AC_SUBST(LIBLIST)
1158 AC_SUBST(LIBLINKS)
1159 AC_SUBST(MAKE_SHLIB_COMMAND)
1160 AC_SUBST(SHLIB_EXPFLAGS)
1161 AC_SUBST(SHLIB_EXPORT_FILE_DEP)
1162 AC_SUBST(INSTALL_SHLIB)
1163 AC_SUBST(STLIBEXT)
1164 AC_SUBST(SHLIBEXT)
1165 AC_SUBST(SHLIBVEXT)
1166 AC_SUBST(SHLIBSEXT)
1167 AC_SUBST(DEPLIBEXT)
1168 AC_SUBST(PFLIBEXT)
1169 AC_SUBST(LIBINSTLIST)])
1170
1171 dnl
1172 dnl KRB5_BUILD_LIBOBJS
1173 dnl
1174 dnl Pull in the necessary stuff to build library objects.
1175
1176 AC_DEFUN(KRB5_BUILD_LIBOBJS,
1177 [AC_REQUIRE([KRB5_LIB_AUX])dnl
1178 AC_SUBST(OBJLISTS)
1179 AC_SUBST(STOBJEXT)
1180 AC_SUBST(SHOBJEXT)
1181 AC_SUBST(PFOBJEXT)
1182 AC_SUBST(PICFLAGS)
1183 AC_SUBST(PROFFLAGS)])
1184
1185 dnl
1186 dnl KRB5_BUILD_PROGRAM
1187 dnl
1188 dnl Set variables to build a program.
1189
1190 AC_DEFUN(KRB5_BUILD_PROGRAM,
1191 [AC_REQUIRE([KRB5_LIB_AUX])dnl
1192 AC_REQUIRE([KRB5_AC_NEED_LIBGEN])dnl
1193 AC_SUBST(CC_LINK)
1194 AC_SUBST(RPATH_FLAG)
1195 AC_SUBST(DEPLIBEXT)])
1196
1197 dnl
1198 dnl KRB5_RUN_FLAGS
1199 dnl
1200 dnl Set up environment for running dynamic executables out of build tree
1201
1202 AC_DEFUN(KRB5_RUN_FLAGS,
1203 [AC_REQUIRE([KRB5_LIB_AUX])dnl
1204 KRB5_RUN_ENV="$RUN_ENV"
1205 AC_SUBST(KRB5_RUN_ENV)])
1206
1207 dnl
1208 dnl KRB5_LIB_AUX
1209 dnl
1210 dnl Parse configure options related to library building.
1211
1212 AC_DEFUN(KRB5_LIB_AUX,
1213 [AC_REQUIRE([KRB5_LIB_PARAMS])dnl
1214
1215 # Check whether to build static libraries.
1216 AC_ARG_ENABLE([static],
1217 AC_HELP_STRING([--enable-static],[build static libraries @<:@disabled for most platforms@:>@])
1218 AC_HELP_STRING([--disable-static],[don't build static libraries]), ,
1219 [enable_static=$default_static])
1220
1221 if test "$enable_static" = no && test "$krb5_force_static" != yes; then
1222         AC_MSG_NOTICE([disabling static libraries])
1223         LIBLINKS=
1224         LIBLIST=
1225         OBJLISTS=
1226 else
1227         LIBLIST='lib$(LIBBASE)$(STLIBEXT)'
1228         LIBLINKS='$(TOPLIBD)/lib$(LIBBASE)$(STLIBEXT)'
1229         OBJLISTS=OBJS.ST
1230         LIBINSTLIST=install-static
1231         DEPLIBEXT=$STLIBEXT
1232 fi
1233
1234 # Check whether to build shared libraries.
1235 AC_ARG_ENABLE([shared],
1236 AC_HELP_STRING([--enable-shared],[build shared libraries @<:@enabled for most platforms@:>@])
1237 AC_HELP_STRING([--disable-shared],[don't build shared libraries]), ,
1238 [enable_shared=$default_shared])
1239
1240 if test "$enable_shared" = yes; then
1241         case "$SHLIBEXT" in
1242         .so-nobuild)
1243                 AC_MSG_WARN([shared libraries not supported on this architecture])
1244                 RUN_ENV=
1245                 CC_LINK="$CC_LINK_STATIC"
1246                 ;;
1247         *)
1248                 # set this now because some logic below may reset SHLIBEXT
1249                 DEPLIBEXT=$SHLIBEXT
1250                 if test "$krb5_force_static" = "yes"; then
1251                         AC_MSG_RESULT([Forcing static libraries.])
1252                         # avoid duplicate rules generation for AIX and such
1253                         SHLIBEXT=.so-nobuild
1254                         SHLIBVEXT=.so.v-nobuild
1255                         SHLIBSEXT=.so.s-nobuild
1256                 else
1257                         AC_MSG_NOTICE([enabling shared libraries])
1258                         # Clear some stuff in case of AIX, etc.
1259                         if test "$STLIBEXT" = "$SHLIBEXT" ; then
1260                                 STLIBEXT=.a-nobuild
1261                                 LIBLIST=
1262                                 LIBLINKS=
1263                                 OBJLISTS=
1264                                 LIBINSTLIST=
1265                         fi
1266                         LIBLIST="$LIBLIST "'lib$(LIBBASE)$(SHLIBEXT)'
1267                         LIBLINKS="$LIBLINKS "'$(TOPLIBD)/lib$(LIBBASE)$(SHLIBEXT) $(TOPLIBD)/lib$(LIBBASE)$(SHLIBVEXT)'
1268                         case "$SHLIBSEXT" in
1269                         .so.s-nobuild)
1270                                 LIBINSTLIST="$LIBINSTLIST install-shared"
1271                                 ;;
1272                         *)
1273                                 LIBLIST="$LIBLIST "'lib$(LIBBASE)$(SHLIBSEXT)'
1274                                 LIBLINKS="$LIBLINKS "'$(TOPLIBD)/lib$(LIBBASE)$(SHLIBSEXT)'
1275                                 LIBINSTLIST="$LIBINSTLIST install-shlib-soname"
1276                                 ;;
1277                         esac
1278                         OBJLISTS="$OBJLISTS OBJS.SH"
1279                 fi
1280                 CC_LINK="$CC_LINK_SHARED"
1281                 ;;
1282         esac
1283 else
1284         RUN_ENV=
1285         CC_LINK="$CC_LINK_STATIC"
1286         SHLIBEXT=.so-nobuild
1287         SHLIBVEXT=.so.v-nobuild
1288         SHLIBSEXT=.so.s-nobuild
1289 fi
1290
1291 if test -z "$LIBLIST"; then
1292         AC_MSG_ERROR([must enable one of shared or static libraries])
1293 fi
1294
1295 # Check whether to build profiled libraries.
1296 AC_ARG_ENABLE([profiled],
1297 [  --enable-profiled       build profiled libraries @<:@disabled@:>@],
1298 [if test "$enableval" = yes; then
1299         case $PFLIBEXT in
1300         .po-nobuild)
1301                 AC_MSG_WARN([Profiled libraries not supported on this architecture.])
1302                 ;;
1303         *)
1304                 AC_MSG_NOTICE([enabling profiled libraries])
1305                 LIBLIST="$LIBLIST "'lib$(LIBBASE)$(PFLIBEXT)'
1306                 LIBLINKS="$LIBLINKS "'$(TOPLIBD)/lib$(LIBBASE)$(PFLIBEXT)'
1307                 OBJLISTS="$OBJLISTS OBJS.PF"
1308                 LIBINSTLIST="$LIBINSTLIST install-profiled"
1309                 ;;
1310         esac
1311 fi])])
1312
1313 dnl
1314 dnl KRB5_LIB_PARAMS
1315 dnl
1316 dnl Determine parameters related to libraries, e.g. various extensions.
1317
1318 AC_DEFUN(KRB5_LIB_PARAMS,
1319 [AC_REQUIRE([AC_CANONICAL_HOST])dnl
1320 krb5_cv_host=$host
1321 AC_SUBST(krb5_cv_host)
1322 AC_REQUIRE([AC_PROG_CC])dnl
1323 AC_REQUIRE([V5_SET_TOPDIR])dnl
1324 . $ac_topdir/config/shlib.conf])
1325 dnl
1326 dnl The following was written by jhawk@mit.edu
1327 dnl
1328 dnl AC_LIBRARY_NET: Id: net.m4,v 1.4 1997/10/25 20:49:53 jhawk Exp
1329 dnl
1330 dnl This test is for network applications that need socket() and
1331 dnl gethostbyname() -ish functions.  Under Solaris, those applications need to
1332 dnl link with "-lsocket -lnsl".  Under IRIX, they should *not* link with
1333 dnl "-lsocket" because libsocket.a breaks a number of things (for instance:
1334 dnl gethostbyname() under IRIX 5.2, and snoop sockets under most versions of
1335 dnl IRIX).
1336 dnl
1337 dnl Unfortunately, many application developers are not aware of this, and
1338 dnl mistakenly write tests that cause -lsocket to be used under IRIX.  It is
1339 dnl also easy to write tests that cause -lnsl to be used under operating
1340 dnl systems where neither are necessary (or useful), such as SunOS 4.1.4, which
1341 dnl uses -lnsl for TLI.
1342 dnl
1343 dnl This test exists so that every application developer does not test this in
1344 dnl a different, and subtly broken fashion.
1345 dnl
1346 dnl It has been argued that this test should be broken up into two seperate
1347 dnl tests, one for the resolver libraries, and one for the libraries necessary
1348 dnl for using Sockets API. Unfortunately, the two are carefully intertwined and
1349 dnl allowing the autoconf user to use them independantly potentially results in
1350 dnl unfortunate ordering dependancies -- as such, such component macros would
1351 dnl have to carefully use indirection and be aware if the other components were
1352 dnl executed. Since other autoconf macros do not go to this trouble, and almost
1353 dnl no applications use sockets without the resolver, this complexity has not
1354 dnl been implemented.
1355 dnl
1356 dnl The check for libresolv is in case you are attempting to link statically
1357 dnl and happen to have a libresolv.a lying around (and no libnsl.a).
1358 dnl
1359 AC_DEFUN(AC_LIBRARY_NET, [
1360    # Most operating systems have gethostbyname() in the default searched
1361    # libraries (i.e. libc):
1362    AC_CHECK_FUNC(gethostbyname, , [
1363      # Some OSes (eg. Solaris) place it in libnsl:
1364      AC_CHECK_LIB(nsl, gethostbyname, , [
1365        # Some strange OSes (SINIX) have it in libsocket:
1366        AC_CHECK_LIB(socket, gethostbyname, , [
1367           # Unfortunately libsocket sometimes depends on libnsl.
1368           # AC_CHECK_LIB's API is essentially broken so the following
1369           # ugliness is necessary:
1370           AC_CHECK_LIB(socket, gethostbyname,
1371              LIBS="-lsocket -lnsl $LIBS",
1372                [AC_CHECK_LIB(resolv, gethostbyname,
1373                              LIBS="-lresolv $LIBS" )],
1374              -lnsl)
1375        ])
1376      ])
1377    ])
1378   AC_CHECK_FUNC(socket, , AC_CHECK_LIB(socket, socket, ,
1379     AC_CHECK_LIB(socket, socket, LIBS="-lsocket -lnsl $LIBS", , -lnsl)))
1380   KRB5_AC_ENABLE_DNS
1381   if test "$enable_dns" = yes ; then
1382     # We assume that if libresolv exists we can link against it.
1383     # This may get us a gethostby* that doesn't respect nsswitch.
1384     AC_CHECK_LIB(resolv, main)
1385 _KRB5_AC_CHECK_RES_FUNCS(res_nsearch res_search ns_initparse dnl
1386 ns_name_uncompress dn_skipname res_ndestroy)
1387     if test $krb5_cv_func_res_nsearch = no \
1388       && test $krb5_cv_func_res_search = no; then
1389         # Attempt to link with res_search(), in case it's not prototyped.
1390         AC_CHECK_FUNC(res_search,
1391           [AC_DEFINE(HAVE_RES_SEARCH, 1,
1392             [Define to 1 if you have the `res_search' function])],
1393           [AC_ERROR([cannot find res_nsearch or res_search])])
1394     fi
1395   fi
1396 ])
1397 AC_DEFUN([_KRB5_AC_CHECK_RES_FUNCS],
1398 [AC_FOREACH([AC_Func], [$1],
1399   [AH_TEMPLATE(AS_TR_CPP(HAVE_[]AC_Func),
1400                [Define to 1 if you have the `]AC_Func[' function.])])dnl
1401 for krb5_func in $1; do
1402 _KRB5_AC_CHECK_RES_FUNC($krb5_func)
1403 done
1404 ])
1405 AC_DEFUN([_KRB5_AC_CHECK_RES_FUNC], [
1406 # Solaris 9 prototypes ns_name_uncompress() in arpa/nameser.h, but
1407 # doesn't export it from libresolv.so, so we use extreme paranoia here
1408 # and check both for the declaration and that we can link against the
1409 # function.
1410 AC_CACHE_CHECK([for $1], [krb5_cv_func_$1], [AC_TRY_LINK(
1411 [#include <sys/types.h>
1412 #include <netinet/in.h>
1413 #include <arpa/nameser.h>
1414 @%:@include <resolv.h>],
1415 [/*
1416  * Use volatile, or else optimization can cause false positives.
1417  */
1418 void (* volatile p)() = (void (*)())$1;],
1419                              [AS_VAR_SET(krb5_cv_func_$1, yes)],
1420                              [AS_VAR_SET(krb5_cv_func_$1, no)])])
1421 AS_IF([test AS_VAR_GET(krb5_cv_func_$1) = yes],
1422       [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$1]), 1,
1423                           [Define to 1 if you have the `$1' function])])[]dnl
1424 ])
1425 dnl
1426 dnl
1427 dnl KRB5_AC_ENABLE_DNS
1428 dnl
1429 AC_DEFUN(KRB5_AC_ENABLE_DNS, [
1430 enable_dns=yes
1431 enable_dns_for_kdc=yes
1432 AC_DEFINE(KRB5_DNS_LOOKUP_KDC,1,[Define to enable DNS lookups of Kerberos KDCs])
1433
1434   AC_ARG_ENABLE([dns-for-realm],
1435 [  --enable-dns-for-realm  enable DNS lookups of Kerberos realm names], ,
1436 [enable_dns_for_realm=no])
1437   if test "$enable_dns_for_realm" = yes; then
1438     AC_DEFINE(KRB5_DNS_LOOKUP_REALM,1,[Define to enable DNS lookups of Kerberos realm names])
1439   fi
1440
1441 AC_DEFINE(KRB5_DNS_LOOKUP, 1,[Define for DNS support of locating realms and KDCs])
1442
1443 ])
1444 dnl
1445 dnl
1446 dnl Check if we need the prototype for a function - we give it a bogus
1447 dnl prototype and if it complains - then a valid prototype exists on the
1448 dnl system.
1449 dnl
1450 dnl KRB5_NEED_PROTO(includes, function, [bypass])
1451 dnl if $3 set, don't see if library defined.
1452 dnl Useful for case where we will define in libkrb5 the function if need be
1453 dnl but want to know if a prototype exists in either case on system.
1454 dnl
1455 AC_DEFUN([KRB5_NEED_PROTO], [
1456 ifelse([$3], ,[if test "x$ac_cv_func_$2" = xyes; then])
1457 AC_CACHE_CHECK([if $2 needs a prototype provided], krb5_cv_func_$2_noproto,
1458 AC_TRY_COMPILE([$1],
1459 [struct k5foo {int foo; } xx;
1460 extern int $2 (struct k5foo*);
1461 $2(&xx);
1462 ],
1463 krb5_cv_func_$2_noproto=yes,krb5_cv_func_$2_noproto=no))
1464 if test $krb5_cv_func_$2_noproto = yes; then
1465         AC_DEFINE([NEED_]translit($2, [a-z], [A-Z])[_PROTO], 1, dnl
1466 [define if the system header files are missing prototype for $2()])
1467 fi
1468 ifelse([$3], ,[fi])
1469 ])
1470 dnl
1471 dnl =============================================================
1472 dnl Internal function for testing for getpeername prototype
1473 dnl
1474 AC_DEFUN([KRB5_GETPEERNAME_ARGS],[
1475 AC_DEFINE([GETPEERNAME_ARG2_TYPE],GETSOCKNAME_ARG2_TYPE,[Type of getpeername second argument.])
1476 AC_DEFINE([GETPEERNAME_ARG3_TYPE],GETSOCKNAME_ARG3_TYPE,[Type of getpeername second argument.])
1477 ])
1478 dnl
1479 dnl =============================================================
1480 dnl Internal function for testing for getsockname arguments
1481 dnl
1482 AC_DEFUN([TRY_GETSOCK_INT],[
1483 krb5_lib_var=`echo "$1 $2" | sed 'y% ./+-*%___p_p%'`
1484 AC_MSG_CHECKING([if getsockname() takes arguments $1 and $2])
1485 AC_CACHE_VAL(krb5_cv_getsockname_proto_$krb5_lib_var,
1486 [
1487 AC_TRY_COMPILE([#include <sys/types.h>
1488 #include <sys/socket.h>
1489 extern int getsockname(int, $1, $2);
1490 ],,eval "krb5_cv_getsockname_proto_$krb5_lib_var=yes",
1491     eval "krb5_cv_getsockname_proto_$krb5_lib_var=no")])
1492 if eval "test \"`echo '$krb5_cv_getsockname_proto_'$krb5_lib_var`\" = yes"; then
1493         AC_MSG_RESULT(yes)
1494         sock_set=yes; res1="$1"; res2="$2"
1495 else
1496         AC_MSG_RESULT(no)
1497 fi
1498 ])
1499 dnl
1500 dnl Determines the types of the second and third arguments to getsockname().
1501 dnl
1502 AC_DEFUN([KRB5_GETSOCKNAME_ARGS],[
1503 sock_set=no
1504 for sock_arg1 in "struct sockaddr *" "void *"
1505 do
1506   for sock_arg2 in "size_t *" "int *" "socklen_t *"
1507   do
1508         if test $sock_set = no; then
1509           TRY_GETSOCK_INT($sock_arg1, $sock_arg2)
1510         fi
1511   done
1512 done
1513 if test "$sock_set" = no; then
1514   AC_MSG_NOTICE(assuming struct sockaddr and socklen_t for getsockname args)
1515   res1="struct sockaddr *"
1516   res2="socklen_t *"
1517 fi
1518 res1=`echo "$res1" | tr -d '*' | sed -e 's/ *$//'`
1519 res2=`echo "$res2" | tr -d '*' | sed -e 's/ *$//'`
1520 AC_DEFINE_UNQUOTED([GETSOCKNAME_ARG2_TYPE],$res1,[Type of pointer target for argument 2 to getsockname])
1521 AC_DEFINE_UNQUOTED([GETSOCKNAME_ARG3_TYPE],$res2,[Type of pointer target for argument 3 to getsockname])
1522 ])
1523 dnl
1524 dnl
1525 AC_DEFUN([KRB5_AC_CHOOSE_ET],[
1526 AC_ARG_WITH([system-et],
1527 AC_HELP_STRING(--with-system-et,use system compile_et and -lcom_err @<:@default: build and install a local version@:>@))
1528 AC_MSG_CHECKING(which version of com_err to use)
1529 if test "x$with_system_et" = xyes ; then
1530   COM_ERR_VERSION=sys
1531   AC_MSG_RESULT(system)
1532 else
1533   COM_ERR_VERSION=k5
1534   AC_MSG_RESULT(krb5)
1535 fi
1536 if test $COM_ERR_VERSION = sys; then
1537   # check for various functions we need
1538   AC_CHECK_LIB(com_err, add_error_table, :, AC_MSG_ERROR(cannot find add_error_table in com_err library))
1539   AC_CHECK_LIB(com_err, remove_error_table, :, AC_MSG_ERROR(cannot find remove_error_table in com_err library))
1540   # make sure compile_et provides "et_foo" name
1541   cat >> conf$$e.et <<EOF
1542 error_table foo
1543 error_code ERR_FOO, "foo"
1544 end
1545 EOF
1546   AC_CHECK_PROGS(compile_et,compile_et,false)
1547   if test "$compile_et" = false; then
1548     AC_MSG_ERROR(cannot find compile_et)
1549   fi
1550   AC_CACHE_CHECK(whether compile_et is useful,krb5_cv_compile_et_useful,[
1551   if compile_et conf$$e.et >/dev/null 2>&1 ; then true ; else
1552     AC_MSG_ERROR(execution failed)
1553   fi
1554   AC_TRY_COMPILE([#include "conf$$e.h"
1555                  ],[ et_foo_error_table; ],:,
1556                  [AC_MSG_ERROR(cannot use et_foo_error_table)])
1557   # Anything else we need to test for?
1558   rm -f conf$$e.et conf$$e.c conf$$e.h
1559   krb5_cv_compile_et_useful=yes
1560   ])
1561 fi
1562 AC_SUBST(COM_ERR_VERSION)
1563 ])
1564 AC_DEFUN([KRB5_AC_CHOOSE_SS],[
1565 AC_ARG_WITH(system-ss,
1566             AC_HELP_STRING(--with-system-ss,use system -lss and mk_cmds @<:@private version@:>@))
1567 AC_ARG_VAR(SS_LIB,[system libraries for 'ss' package [-lss]])
1568 AC_MSG_CHECKING(which version of subsystem package to use)
1569 if test "x$with_system_ss" = xyes ; then
1570   SS_VERSION=sys
1571   AC_MSG_RESULT(system)
1572   # todo: check for various libraries we might need
1573   # in the meantime...
1574   test "x${SS_LIB+set}" = xset || SS_LIB=-lss
1575   old_LIBS="$LIBS"
1576   LIBS="$LIBS $SS_LIB"
1577   AC_CACHE_CHECK(whether system ss package works, krb5_cv_system_ss_okay,[
1578   AC_TRY_RUN([
1579 #include <ss/ss.h>
1580 int main(int argc, char *argv[]) {
1581   if (argc == 42) {
1582     int i, err;
1583     i = ss_create_invocation("foo","foo","",0,&err);
1584     ss_listen(i);
1585   }
1586   return 0;
1587 }], krb5_cv_system_ss_okay=yes, AC_MSG_ERROR(cannot run test program),
1588   krb5_cv_system_ss_okay="assumed")])
1589   LIBS="$old_LIBS"
1590 else
1591   SS_VERSION=k5
1592   AC_MSG_RESULT(krb5)
1593 fi
1594 AC_SUBST(SS_LIB)
1595 AC_SUBST(SS_VERSION)
1596 ])
1597 dnl
1598 AC_DEFUN([KRB5_AC_CHOOSE_DB],[
1599 AC_ARG_WITH(system-db,
1600             AC_HELP_STRING(--with-system-db,use system Berkeley db @<:@private version@:>@))
1601 AC_ARG_VAR(DB_HEADER,[header file for system Berkeley db package [db.h]])
1602 AC_ARG_VAR(DB_LIB,[library for system Berkeley db package [-ldb]])
1603 if test "x$with_system_db" = xyes ; then
1604   DB_VERSION=sys
1605   # TODO: Do we have specific routines we should check for?
1606   # How about known, easily recognizable bugs?
1607   # We want to use bt_rseq in some cases, but no other version but
1608   # ours has it right now.
1609   #
1610   # Okay, check the variables.
1611   test "x${DB_HEADER+set}" = xset || DB_HEADER=db.h
1612   test "x${DB_LIB+set}" = xset || DB_LIB=-ldb
1613   #
1614   if test "x${DB_HEADER}" = xdb.h ; then
1615     DB_HEADER_VERSION=sys
1616   else
1617     DB_HEADER_VERSION=redirect
1618   fi
1619   KDB5_DB_LIB="$DB_LIB"
1620 else
1621   DB_VERSION=k5
1622   AC_DEFINE(HAVE_BT_RSEQ,1,[Define if bt_rseq is available, for recursive btree traversal.])
1623   DB_HEADER=db.h
1624   DB_HEADER_VERSION=k5
1625   # libdb gets sucked into libkdb
1626   KDB5_DB_LIB=
1627   # needed for a couple of things that need libdb for its own sake
1628   DB_LIB=-ldb
1629 fi
1630 AC_SUBST(DB_VERSION)
1631 AC_SUBST(DB_HEADER)
1632 AC_SUBST(DB_HEADER_VERSION)
1633 AC_SUBST(DB_LIB)
1634 AC_SUBST(KDB5_DB_LIB)
1635 ])
1636 dnl
1637 dnl KRB5_AC_PRIOCNTL_HACK
1638 dnl
1639 dnl
1640 AC_DEFUN([KRB5_AC_PRIOCNTL_HACK],
1641 [AC_REQUIRE([AC_PROG_AWK])dnl
1642 AC_REQUIRE([AC_LANG_COMPILER_REQUIRE])dnl
1643 AC_CACHE_CHECK([whether to use priocntl hack], [krb5_cv_priocntl_hack],
1644 [case $krb5_cv_host in
1645 *-*-solaris2.9*)
1646         if test "$cross_compiling" = yes; then
1647                 krb5_cv_priocntl_hack=yes
1648         else
1649                 # Solaris patch 117171-11 (sparc) or 117172-11 (x86)
1650                 # fixes the Solaris 9 bug where final pty output
1651                 # gets lost on close.
1652                 if showrev -p | $AWK 'BEGIN { e = 1 }
1653 /Patch: 11717[[12]]/ { x = index[]([$]2, "-");
1654 if (substr[]([$]2, x + 1, length([$]2) - x) >= 11)
1655 { e = 0 } else { e = 1 } }
1656 END { exit e; }'; then
1657                         krb5_cv_priocntl_hack=no
1658                 else
1659                         krb5_cv_priocntl_hack=yes
1660                 fi
1661         fi
1662         ;;
1663 *)
1664         krb5_cv_priocntl_hack=no
1665         ;;
1666 esac])
1667 if test "$krb5_cv_priocntl_hack" = yes; then
1668         PRIOCNTL_HACK=1
1669 else
1670         PRIOCNTL_HACK=0
1671 fi
1672 AC_SUBST(PRIOCNTL_HACK)])
1673 dnl
1674 dnl
1675 dnl KRB5_AC_GCC_ATTRS
1676 AC_DEFUN([KRB5_AC_GCC_ATTRS],
1677 [AC_CACHE_CHECK([for constructor/destructor attribute support],krb5_cv_attr_constructor_destructor,
1678 [rm -f conftest.1 conftest.2
1679 if test -r conftest.1 || test -r conftest.2 ; then
1680   AC_MSG_ERROR(write error in local file system?)
1681 fi
1682 true > conftest.1
1683 true > conftest.2
1684 if test -r conftest.1 && test -r conftest.2 ; then true ; else
1685   AC_MSG_ERROR(write error in local file system?)
1686 fi
1687 a=no
1688 b=no
1689 # blindly assume we have 'unlink'...
1690 AC_TRY_RUN([void foo1() __attribute__((constructor));
1691 void foo1() { unlink("conftest.1"); }
1692 void foo2() __attribute__((destructor));
1693 void foo2() { unlink("conftest.2"); }
1694 int main () { return 0; }],
1695 [test -r conftest.1 || a=yes
1696 test -r conftest.2 || b=yes], , AC_MSG_ERROR(Cannot test for constructor/destructor support when cross compiling))
1697 case $krb5_cv_host in
1698 *-*-aix4.*)
1699         # Under AIX 4.3.3, at least, shared library destructor functions
1700         # appear to get executed in reverse link order (right to left),
1701         # so that a library's destructor function may run after that of
1702         # libraries it depends on, and may still have to access in the
1703         # destructor.
1704         #
1705         # That counts as "not working", for me, but it's a much more
1706         # complicated test case to set up.
1707         b=no
1708         ;;
1709 esac
1710 krb5_cv_attr_constructor_destructor="$a,$b"
1711 ])
1712 # Okay, krb5_cv_... should be set now.
1713 case $krb5_cv_attr_constructor_destructor in
1714   yes,*)
1715     AC_DEFINE(CONSTRUCTOR_ATTR_WORKS,1,[Define if __attribute__((constructor)) works]) ;;
1716 esac
1717 case $krb5_cv_attr_constructor_destructor in
1718   *,yes)
1719     AC_DEFINE(DESTRUCTOR_ATTR_WORKS,1,[Define if __attribute__((destructor)) works]) ;;
1720 esac
1721 dnl End of attributes we care about right now.
1722 ])
1723 dnl
1724 dnl
1725 dnl KRB5_AC_PRAGMA_WEAK_REF
1726 AC_DEFUN([KRB5_AC_PRAGMA_WEAK_REF],
1727 [AC_CACHE_CHECK([whether pragma weak references are supported],
1728 krb5_cv_pragma_weak_ref,
1729 [AC_TRY_LINK([#pragma weak flurbl
1730 extern int flurbl(void);],[if (&flurbl != 0) return flurbl();],
1731 krb5_cv_pragma_weak_ref=yes,krb5_cv_pragma_weak_ref=no)])
1732 if test $krb5_cv_pragma_weak_ref = yes ; then
1733   AC_DEFINE(HAVE_PRAGMA_WEAK_REF,1,[Define if #pragma weak references work])
1734 fi])
1735 dnl
1736 dnl
1737 m4_include(config/ac-archive/acx_pthread.m4)
1738 #
1739 # KRB5_AC_LIBUTIL
1740 #
1741 # Check for libutil, for NetBSD, et al.; needed for openpty() and
1742 # logwtmp() on some platforms.
1743 #
1744 AC_DEFUN([KRB5_AC_LIBUTIL],
1745         [AC_CHECK_LIB(util, main,
1746                 [AC_DEFINE(HAVE_LIBUTIL)
1747   UTIL_LIB=-lutil])dnl
1748 AC_SUBST(UTIL_LIB)
1749 ])