readline/aclocal.m4

   1 dnl
   2 dnl Bash specific tests
   3 dnl
   4 dnl Some derived from PDKSH 5.1.3 autoconf tests
   5 dnl
   6
   7 AC_DEFUN(BASH_C_LONG_LONG,
   8 [AC_CACHE_CHECK(for long long, ac_cv_c_long_long,
   9 [if test "$GCC" = yes; then
  10   ac_cv_c_long_long=yes
  11 else
  12 AC_TRY_RUN([
  13 int
  14 main()
  15 {
  16 long long foo = 0;
  17 exit(sizeof(long long) < sizeof(long));
  18 }
  19 ], ac_cv_c_long_long=yes, ac_cv_c_long_long=no)
  20 fi])
  21 if test $ac_cv_c_long_long = yes; then
  22   AC_DEFINE(HAVE_LONG_LONG, 1, [Define if the `long long' type works.])
  23 fi
  24 ])
  25
  26 dnl
  27 dnl This is very similar to AC_C_LONG_DOUBLE, with the fix for IRIX
  28 dnl (< changed to <=) added.
  29 dnl
  30 AC_DEFUN(BASH_C_LONG_DOUBLE,
  31 [AC_CACHE_CHECK(for long double, ac_cv_c_long_double,
  32 [if test "$GCC" = yes; then
  33   ac_cv_c_long_double=yes
  34 else
  35 AC_TRY_RUN([
  36 int
  37 main()
  38 {
  39   /* The Stardent Vistra knows sizeof(long double), but does not
  40      support it. */
  41   long double foo = 0.0;
  42   /* On Ultrix 4.3 cc, long double is 4 and double is 8.  */
  43   /* On IRIX 5.3, the compiler converts long double to double with a warning,
  44      but compiles this successfully. */
  45   exit(sizeof(long double) <= sizeof(double));
  46 }
  47 ], ac_cv_c_long_double=yes, ac_cv_c_long_double=no)
  48 fi])
  49 if test $ac_cv_c_long_double = yes; then
  50   AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if the `long double' type works.])
  51 fi
  52 ])
  53
  54 dnl
  55 dnl Check for <inttypes.h>.  This is separated out so that it can be
  56 dnl AC_REQUIREd.
  57 dnl
  58 dnl BASH_HEADER_INTTYPES
  59 AC_DEFUN(BASH_HEADER_INTTYPES,
  60 [
  61  AC_CHECK_HEADERS(inttypes.h)
  62 ])
  63
  64 dnl
  65 dnl check for typedef'd symbols in header files, but allow the caller to
  66 dnl specify the include files to be checked in addition to the default
  67 dnl
  68 dnl BASH_CHECK_TYPE(TYPE, HEADERS, DEFAULT[, VALUE-IF-FOUND])
  69 AC_DEFUN(BASH_CHECK_TYPE,
  70 [
  71 AC_REQUIRE([AC_HEADER_STDC])dnl
  72 AC_REQUIRE([BASH_HEADER_INTTYPES])
  73 AC_MSG_CHECKING(for $1)
  74 AC_CACHE_VAL(bash_cv_type_$1,
  75 [AC_EGREP_CPP($1, [#include <sys/types.h>
  76 #if STDC_HEADERS
  77 #include <stdlib.h>
  78 #include <stddef.h>
  79 #endif
  80 #if HAVE_INTTYPES_H
  81 #include <inttypes.h>
  82 #endif
  83 $2
  84 ], bash_cv_type_$1=yes, bash_cv_type_$1=no)])
  85 AC_MSG_RESULT($bash_cv_type_$1)
  86 ifelse($#, 4, [if test $bash_cv_type_$1 = yes; then
  87         AC_DEFINE($4)
  88         fi])
  89 if test $bash_cv_type_$1 = no; then
  90   AC_DEFINE_UNQUOTED($1, $3)
  91 fi
  92 ])
  93
  94 dnl
  95 dnl BASH_CHECK_DECL(FUNC)
  96 dnl
  97 dnl Check for a declaration of FUNC in stdlib.h and inttypes.h like
  98 dnl AC_CHECK_DECL
  99 dnl
 100 AC_DEFUN(BASH_CHECK_DECL,
 101 [
 102 AC_REQUIRE([AC_HEADER_STDC])
 103 AC_REQUIRE([BASH_HEADER_INTTYPES])
 104 AC_CACHE_CHECK([for declaration of $1], bash_cv_decl_$1,
 105 [AC_TRY_LINK(
 106 [
 107 #if STDC_HEADERS
 108 #  include <stdlib.h>
 109 #endif
 110 #if HAVE_INTTYPES_H
 111 #  include <inttypes.h>
 112 #endif
 113 ],
 114 [return !$1;],
 115 bash_cv_decl_$1=yes, bash_cv_decl_$1=no)])
 116 bash_tr_func=HAVE_DECL_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 117 if test $bash_cv_decl_$1 = yes; then
 118   AC_DEFINE_UNQUOTED($bash_tr_func, 1)
 119 else
 120   AC_DEFINE_UNQUOTED($bash_tr_func, 0)
 121 fi
 122 ])
 123
 124 AC_DEFUN(BASH_DECL_PRINTF,
 125 [AC_MSG_CHECKING(for declaration of printf in <stdio.h>)
 126 AC_CACHE_VAL(bash_cv_printf_declared,
 127 [AC_TRY_RUN([
 128 #include <stdio.h>
 129 #ifdef __STDC__
 130 typedef int (*_bashfunc)(const char *, ...);
 131 #else
 132 typedef int (*_bashfunc)();
 133 #endif
 134 main()
 135 {
 136 _bashfunc pf;
 137 pf = (_bashfunc) printf;
 138 exit(pf == 0);
 139 }
 140 ], bash_cv_printf_declared=yes, bash_cv_printf_declared=no,
 141    [AC_MSG_WARN(cannot check printf declaration if cross compiling -- defaulting to yes)
 142     bash_cv_printf_declared=yes]
 143 )])
 144 AC_MSG_RESULT($bash_cv_printf_declared)
 145 if test $bash_cv_printf_declared = yes; then
 146 AC_DEFINE(PRINTF_DECLARED)
 147 fi
 148 ])
 149
 150 AC_DEFUN(BASH_DECL_SBRK,
 151 [AC_MSG_CHECKING(for declaration of sbrk in <unistd.h>)
 152 AC_CACHE_VAL(bash_cv_sbrk_declared,
 153 [AC_EGREP_HEADER(sbrk, unistd.h,
 154  bash_cv_sbrk_declared=yes, bash_cv_sbrk_declared=no)])
 155 AC_MSG_RESULT($bash_cv_sbrk_declared)
 156 if test $bash_cv_sbrk_declared = yes; then
 157 AC_DEFINE(SBRK_DECLARED)
 158 fi
 159 ])
 160
 161 dnl
 162 dnl Check for sys_siglist[] or _sys_siglist[]
 163 dnl
 164 AC_DEFUN(BASH_DECL_UNDER_SYS_SIGLIST,
 165 [AC_MSG_CHECKING([for _sys_siglist in signal.h or unistd.h])
 166 AC_CACHE_VAL(bash_cv_decl_under_sys_siglist,
 167 [AC_TRY_COMPILE([
 168 #include <sys/types.h>
 169 #include <signal.h>
 170 #ifdef HAVE_UNISTD_H
 171 #include <unistd.h>
 172 #endif], [ char *msg = _sys_siglist[2]; ],
 173   bash_cv_decl_under_sys_siglist=yes, bash_cv_decl_under_sys_siglist=no,
 174   [AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)])])dnl
 175 AC_MSG_RESULT($bash_cv_decl_under_sys_siglist)
 176 if test $bash_cv_decl_under_sys_siglist = yes; then
 177 AC_DEFINE(UNDER_SYS_SIGLIST_DECLARED)
 178 fi
 179 ])
 180
 181 AC_DEFUN(BASH_UNDER_SYS_SIGLIST,
 182 [AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST])
 183 AC_MSG_CHECKING([for _sys_siglist in system C library])
 184 AC_CACHE_VAL(bash_cv_under_sys_siglist,
 185 [AC_TRY_RUN([
 186 #include <sys/types.h>
 187 #include <signal.h>
 188 #ifdef HAVE_UNISTD_H
 189 #include <unistd.h>
 190 #endif
 191 #ifndef UNDER_SYS_SIGLIST_DECLARED
 192 extern char *_sys_siglist[];
 193 #endif
 194 main()
 195 {
 196 char *msg = (char *)_sys_siglist[2];
 197 exit(msg == 0);
 198 }],
 199         bash_cv_under_sys_siglist=yes, bash_cv_under_sys_siglist=no,
 200         [AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)
 201          bash_cv_under_sys_siglist=no])])
 202 AC_MSG_RESULT($bash_cv_under_sys_siglist)
 203 if test $bash_cv_under_sys_siglist = yes; then
 204 AC_DEFINE(HAVE_UNDER_SYS_SIGLIST)
 205 fi
 206 ])
 207
 208 AC_DEFUN(BASH_SYS_SIGLIST,
 209 [AC_REQUIRE([AC_DECL_SYS_SIGLIST])
 210 AC_MSG_CHECKING([for sys_siglist in system C library])
 211 AC_CACHE_VAL(bash_cv_sys_siglist,
 212 [AC_TRY_RUN([
 213 #include <sys/types.h>
 214 #include <signal.h>
 215 #ifdef HAVE_UNISTD_H
 216 #include <unistd.h>
 217 #endif
 218 #ifndef SYS_SIGLIST_DECLARED
 219 extern char *sys_siglist[];
 220 #endif
 221 main()
 222 {
 223 char *msg = sys_siglist[2];
 224 exit(msg == 0);
 225 }],
 226         bash_cv_sys_siglist=yes, bash_cv_sys_siglist=no,
 227         [AC_MSG_WARN(cannot check for sys_siglist if cross compiling -- defaulting to no)
 228          bash_cv_sys_siglist=no])])
 229 AC_MSG_RESULT($bash_cv_sys_siglist)
 230 if test $bash_cv_sys_siglist = yes; then
 231 AC_DEFINE(HAVE_SYS_SIGLIST)
 232 fi
 233 ])
 234
 235 dnl Check for the various permutations of sys_siglist and make sure we
 236 dnl compile in siglist.o if they're not defined
 237 AC_DEFUN(BASH_CHECK_SYS_SIGLIST, [
 238 AC_REQUIRE([BASH_SYS_SIGLIST])
 239 AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST])
 240 AC_REQUIRE([BASH_FUNC_STRSIGNAL])
 241 if test "$bash_cv_sys_siglist" = no && test "$bash_cv_under_sys_siglist" = no && test "$bash_cv_have_strsignal" = no; then
 242   SIGLIST_O=siglist.o
 243 else
 244   SIGLIST_O=
 245 fi
 246 AC_SUBST([SIGLIST_O])
 247 ])
 248
 249 dnl Check for sys_errlist[] and sys_nerr, check for declaration
 250 AC_DEFUN(BASH_SYS_ERRLIST,
 251 [AC_MSG_CHECKING([for sys_errlist and sys_nerr])
 252 AC_CACHE_VAL(bash_cv_sys_errlist,
 253 [AC_TRY_LINK([#include <errno.h>],
 254 [extern char *sys_errlist[];
 255  extern int sys_nerr;
 256  char *msg = sys_errlist[sys_nerr - 1];],
 257     bash_cv_sys_errlist=yes, bash_cv_sys_errlist=no)])dnl
 258 AC_MSG_RESULT($bash_cv_sys_errlist)
 259 if test $bash_cv_sys_errlist = yes; then
 260 AC_DEFINE(HAVE_SYS_ERRLIST)
 261 fi
 262 ])
 263
 264 dnl
 265 dnl Check if dup2() does not clear the close on exec flag
 266 dnl
 267 AC_DEFUN(BASH_FUNC_DUP2_CLOEXEC_CHECK,
 268 [AC_MSG_CHECKING(if dup2 fails to clear the close-on-exec flag)
 269 AC_CACHE_VAL(bash_cv_dup2_broken,
 270 [AC_TRY_RUN([
 271 #include <sys/types.h>
 272 #include <fcntl.h>
 273 main()
 274 {
 275   int fd1, fd2, fl;
 276   fd1 = open("/dev/null", 2);
 277   if (fcntl(fd1, 2, 1) < 0)
 278     exit(1);
 279   fd2 = dup2(fd1, 1);
 280   if (fd2 < 0)
 281     exit(2);
 282   fl = fcntl(fd2, 1, 0);
 283   /* fl will be 1 if dup2 did not reset the close-on-exec flag. */
 284   exit(fl != 1);
 285 }
 286 ], bash_cv_dup2_broken=yes, bash_cv_dup2_broken=no,
 287     [AC_MSG_WARN(cannot check dup2 if cross compiling -- defaulting to no)
 288      bash_cv_dup2_broken=no])
 289 ])
 290 AC_MSG_RESULT($bash_cv_dup2_broken)
 291 if test $bash_cv_dup2_broken = yes; then
 292 AC_DEFINE(DUP2_BROKEN)
 293 fi
 294 ])
 295
 296 AC_DEFUN(BASH_FUNC_STRSIGNAL,
 297 [AC_MSG_CHECKING([for the existence of strsignal])
 298 AC_CACHE_VAL(bash_cv_have_strsignal,
 299 [AC_TRY_LINK([#include <sys/types.h>
 300 #include <signal.h>],
 301 [char *s = (char *)strsignal(2);],
 302  bash_cv_have_strsignal=yes, bash_cv_have_strsignal=no)])
 303 AC_MSG_RESULT($bash_cv_have_strsignal)
 304 if test $bash_cv_have_strsignal = yes; then
 305 AC_DEFINE(HAVE_STRSIGNAL)
 306 fi
 307 ])
 308
 309 dnl Check to see if opendir will open non-directories (not a nice thing)
 310 AC_DEFUN(BASH_FUNC_OPENDIR_CHECK,
 311 [AC_REQUIRE([AC_HEADER_DIRENT])dnl
 312 AC_MSG_CHECKING(if opendir() opens non-directories)
 313 AC_CACHE_VAL(bash_cv_opendir_not_robust,
 314 [AC_TRY_RUN([
 315 #include <stdio.h>
 316 #include <sys/types.h>
 317 #include <fcntl.h>
 318 #ifdef HAVE_UNISTD_H
 319 # include <unistd.h>
 320 #endif /* HAVE_UNISTD_H */
 321 #if defined(HAVE_DIRENT_H)
 322 # include <dirent.h>
 323 #else
 324 # define dirent direct
 325 # ifdef HAVE_SYS_NDIR_H
 326 #  include <sys/ndir.h>
 327 # endif /* SYSNDIR */
 328 # ifdef HAVE_SYS_DIR_H
 329 #  include <sys/dir.h>
 330 # endif /* SYSDIR */
 331 # ifdef HAVE_NDIR_H
 332 #  include <ndir.h>
 333 # endif
 334 #endif /* HAVE_DIRENT_H */
 335 main()
 336 {
 337 DIR *dir;
 338 int fd, err;
 339 err = mkdir("/tmp/bash-aclocal", 0700);
 340 if (err < 0) {
 341   perror("mkdir");
 342   exit(1);
 343 }
 344 unlink("/tmp/bash-aclocal/not_a_directory");
 345 fd = open("/tmp/bash-aclocal/not_a_directory", O_WRONLY|O_CREAT|O_EXCL, 0666);
 346 write(fd, "\n", 1);
 347 close(fd);
 348 dir = opendir("/tmp/bash-aclocal/not_a_directory");
 349 unlink("/tmp/bash-aclocal/not_a_directory");
 350 rmdir("/tmp/bash-aclocal");
 351 exit (dir == 0);
 352 }], bash_cv_opendir_not_robust=yes,bash_cv_opendir_not_robust=no,
 353     [AC_MSG_WARN(cannot check opendir if cross compiling -- defaulting to no)
 354      bash_cv_opendir_not_robust=no]
 355 )])
 356 AC_MSG_RESULT($bash_cv_opendir_not_robust)
 357 if test $bash_cv_opendir_not_robust = yes; then
 358 AC_DEFINE(OPENDIR_NOT_ROBUST)
 359 fi
 360 ])
 361
 362 dnl
 363 AC_DEFUN(BASH_TYPE_SIGHANDLER,
 364 [AC_MSG_CHECKING([whether signal handlers are of type void])
 365 AC_CACHE_VAL(bash_cv_void_sighandler,
 366 [AC_TRY_COMPILE([#include <sys/types.h>
 367 #include <signal.h>
 368 #ifdef signal
 369 #undef signal
 370 #endif
 371 #ifdef __cplusplus
 372 extern "C"
 373 #endif
 374 void (*signal ()) ();],
 375 [int i;], bash_cv_void_sighandler=yes, bash_cv_void_sighandler=no)])dnl
 376 AC_MSG_RESULT($bash_cv_void_sighandler)
 377 if test $bash_cv_void_sighandler = yes; then
 378 AC_DEFINE(VOID_SIGHANDLER)
 379 fi
 380 ])
 381
 382 dnl
 383 dnl A signed 16-bit integer quantity
 384 dnl
 385 AC_DEFUN(BASH_TYPE_BITS16_T,
 386 [
 387 if test "$ac_cv_sizeof_short" = 2; then
 388   AC_CHECK_TYPE(bits16_t, short)
 389 elif test "$ac_cv_sizeof_char" = 2; then
 390   AC_CHECK_TYPE(bits16_t, char)
 391 else
 392   AC_CHECK_TYPE(bits16_t, short)
 393 fi
 394 ])
 395
 396 dnl
 397 dnl An unsigned 16-bit integer quantity
 398 dnl
 399 AC_DEFUN(BASH_TYPE_U_BITS16_T,
 400 [
 401 if test "$ac_cv_sizeof_short" = 2; then
 402   AC_CHECK_TYPE(u_bits16_t, unsigned short)
 403 elif test "$ac_cv_sizeof_char" = 2; then
 404   AC_CHECK_TYPE(u_bits16_t, unsigned char)
 405 else
 406   AC_CHECK_TYPE(u_bits16_t, unsigned short)
 407 fi
 408 ])
 409
 410 dnl
 411 dnl A signed 32-bit integer quantity
 412 dnl
 413 AC_DEFUN(BASH_TYPE_BITS32_T,
 414 [
 415 if test "$ac_cv_sizeof_int" = 4; then
 416   AC_CHECK_TYPE(bits32_t, int)
 417 elif test "$ac_cv_sizeof_long" = 4; then
 418   AC_CHECK_TYPE(bits32_t, long)
 419 else
 420   AC_CHECK_TYPE(bits32_t, int)
 421 fi
 422 ])
 423
 424 dnl
 425 dnl An unsigned 32-bit integer quantity
 426 dnl
 427 AC_DEFUN(BASH_TYPE_U_BITS32_T,
 428 [
 429 if test "$ac_cv_sizeof_int" = 4; then
 430   AC_CHECK_TYPE(u_bits32_t, unsigned int)
 431 elif test "$ac_cv_sizeof_long" = 4; then
 432   AC_CHECK_TYPE(u_bits32_t, unsigned long)
 433 else
 434   AC_CHECK_TYPE(u_bits32_t, unsigned int)
 435 fi
 436 ])
 437
 438 AC_DEFUN(BASH_TYPE_PTRDIFF_T,
 439 [
 440 if test "$ac_cv_sizeof_int" = "$ac_cv_sizeof_char_p"; then
 441   AC_CHECK_TYPE(ptrdiff_t, int)
 442 elif test "$ac_cv_sizeof_long" = "$ac_cv_sizeof_char_p"; then
 443   AC_CHECK_TYPE(ptrdiff_t, long)
 444 elif test "$ac_cv_type_long_long" = yes && test "$ac_cv_sizeof_long_long" = "$ac_cv_sizeof_char_p"; then
 445   AC_CHECK_TYPE(ptrdiff_t, [long long])
 446 else
 447   AC_CHECK_TYPE(ptrdiff_t, int)
 448 fi
 449 ])
 450
 451 dnl
 452 dnl A signed 64-bit quantity
 453 dnl
 454 AC_DEFUN(BASH_TYPE_BITS64_T,
 455 [
 456 if test "$ac_cv_sizeof_char_p" = 8; then
 457   AC_CHECK_TYPE(bits64_t, char *)
 458 elif test "$ac_cv_sizeof_double" = 8; then
 459   AC_CHECK_TYPE(bits64_t, double)
 460 elif test -n "$ac_cv_type_long_long" && test "$ac_cv_sizeof_long_long" = 8; then
 461   AC_CHECK_TYPE(bits64_t, [long long])
 462 elif test "$ac_cv_sizeof_long" = 8; then
 463   AC_CHECK_TYPE(bits64_t, long)
 464 else
 465   AC_CHECK_TYPE(bits64_t, double)
 466 fi
 467 ])
 468
 469 AC_DEFUN(BASH_TYPE_LONG_LONG,
 470 [
 471 AC_CACHE_CHECK([for long long], bash_cv_type_long_long,
 472 [AC_TRY_LINK([
 473 long long ll = 1; int i = 63;],
 474 [
 475 long long llm = (long long) -1;
 476 return ll << i | ll >> i | llm / ll | llm % ll;
 477 ], bash_cv_type_long_long='long long', bash_cv_type_long_long='long')])
 478 if test "$bash_cv_type_long_long" = 'long long'; then
 479   AC_DEFINE(HAVE_LONG_LONG, 1)
 480 fi
 481 ])
 482
 483 AC_DEFUN(BASH_TYPE_UNSIGNED_LONG_LONG,
 484 [
 485 AC_CACHE_CHECK([for unsigned long long], bash_cv_type_unsigned_long_long,
 486 [AC_TRY_LINK([
 487 unsigned long long ull = 1; int i = 63;],
 488 [
 489 unsigned long long ullmax = (unsigned long long) -1;
 490 return ull << i | ull >> i | ullmax / ull | ullmax % ull;
 491 ], bash_cv_type_unsigned_long_long='unsigned long long',
 492    bash_cv_type_unsigned_long_long='unsigned long')])
 493 if test "$bash_cv_type_unsigned_long_long" = 'unsigned long long'; then
 494   AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1)
 495 fi
 496 ])
 497
 498 dnl
 499 dnl Type of struct rlimit fields: some systems (OSF/1, NetBSD, RISC/os 5.0)
 500 dnl have a rlim_t, others (4.4BSD based systems) use quad_t, others use
 501 dnl long and still others use int (HP-UX 9.01, SunOS 4.1.3).  To simplify
 502 dnl matters, this just checks for rlim_t, quad_t, or long.
 503 dnl
 504 AC_DEFUN(BASH_TYPE_RLIMIT,
 505 [AC_MSG_CHECKING(for size and type of struct rlimit fields)
 506 AC_CACHE_VAL(bash_cv_type_rlimit,
 507 [AC_TRY_COMPILE([#include <sys/types.h>
 508 #include <sys/resource.h>],
 509 [rlim_t xxx;], bash_cv_type_rlimit=rlim_t,[
 510 AC_TRY_RUN([
 511 #include <sys/types.h>
 512 #include <sys/time.h>
 513 #include <sys/resource.h>
 514 main()
 515 {
 516 #ifdef HAVE_QUAD_T
 517   struct rlimit rl;
 518   if (sizeof(rl.rlim_cur) == sizeof(quad_t))
 519     exit(0);
 520 #endif
 521   exit(1);
 522 }], bash_cv_type_rlimit=quad_t, bash_cv_type_rlimit=long,
 523         [AC_MSG_WARN(cannot check quad_t if cross compiling -- defaulting to long)
 524          bash_cv_type_rlimit=long])])
 525 ])
 526 AC_MSG_RESULT($bash_cv_type_rlimit)
 527 if test $bash_cv_type_rlimit = quad_t; then
 528 AC_DEFINE(RLIMTYPE, quad_t)
 529 elif test $bash_cv_type_rlimit = rlim_t; then
 530 AC_DEFINE(RLIMTYPE, rlim_t)
 531 fi
 532 ])
 533
 534 AC_DEFUN(BASH_FUNC_LSTAT,
 535 [dnl Cannot use AC_CHECK_FUNCS(lstat) because Linux defines lstat() as an
 536 dnl inline function in <sys/stat.h>.
 537 AC_CACHE_CHECK([for lstat], bash_cv_func_lstat,
 538 [AC_TRY_LINK([
 539 #include <sys/types.h>
 540 #include <sys/stat.h>
 541 ],[ lstat(".",(struct stat *)0); ],
 542 bash_cv_func_lstat=yes, bash_cv_func_lstat=no)])
 543 if test $bash_cv_func_lstat = yes; then
 544   AC_DEFINE(HAVE_LSTAT)
 545 fi
 546 ])
 547
 548 AC_DEFUN(BASH_FUNC_INET_ATON,
 549 [
 550 AC_CACHE_CHECK([for inet_aton], bash_cv_func_inet_aton,
 551 [AC_TRY_LINK([
 552 #include <sys/types.h>
 553 #include <netinet/in.h>
 554 #include <arpa/inet.h>
 555 struct in_addr ap;], [ inet_aton("127.0.0.1", &ap); ],
 556 bash_cv_func_inet_aton=yes, bash_cv_func_inet_aton=no)])
 557 if test $bash_cv_func_inet_aton = yes; then
 558   AC_DEFINE(HAVE_INET_ATON)
 559 else
 560   AC_LIBOBJ(inet_aton)
 561 fi
 562 ])
 563
 564 AC_DEFUN(BASH_FUNC_GETENV,
 565 [AC_MSG_CHECKING(to see if getenv can be redefined)
 566 AC_CACHE_VAL(bash_cv_getenv_redef,
 567 [AC_TRY_RUN([
 568 #ifdef HAVE_UNISTD_H
 569 #  include <unistd.h>
 570 #endif
 571 #ifndef __STDC__
 572 #  ifndef const
 573 #    define const
 574 #  endif
 575 #endif
 576 char *
 577 getenv (name)
 578 #if defined (__linux__) || defined (__bsdi__) || defined (convex)
 579      const char *name;
 580 #else
 581      char const *name;
 582 #endif /* !__linux__ && !__bsdi__ && !convex */
 583 {
 584 return "42";
 585 }
 586 main()
 587 {
 588 char *s;
 589 /* The next allows this program to run, but does not allow bash to link
 590    when it redefines getenv.  I'm not really interested in figuring out
 591    why not. */
 592 #if defined (NeXT)
 593 exit(1);
 594 #endif
 595 s = getenv("ABCDE");
 596 exit(s == 0);   /* force optimizer to leave getenv in */
 597 }
 598 ], bash_cv_getenv_redef=yes, bash_cv_getenv_redef=no,
 599    [AC_MSG_WARN(cannot check getenv redefinition if cross compiling -- defaulting to yes)
 600     bash_cv_getenv_redef=yes]
 601 )])
 602 AC_MSG_RESULT($bash_cv_getenv_redef)
 603 if test $bash_cv_getenv_redef = yes; then
 604 AC_DEFINE(CAN_REDEFINE_GETENV)
 605 fi
 606 ])
 607
 608 # We should check for putenv before calling this
 609 AC_DEFUN(BASH_FUNC_STD_PUTENV,
 610 [
 611 AC_REQUIRE([AC_HEADER_STDC])
 612 AC_REQUIRE([AC_C_PROTOTYPES])
 613 AC_CACHE_CHECK([for standard-conformant putenv declaration], bash_cv_std_putenv,
 614 [AC_TRY_LINK([
 615 #if STDC_HEADERS
 616 #include <stdlib.h>
 617 #include <stddef.h>
 618 #endif
 619 #ifndef __STDC__
 620 #  ifndef const
 621 #    define const
 622 #  endif
 623 #endif
 624 #ifdef PROTOTYPES
 625 extern int putenv (char *);
 626 #else
 627 extern int putenv ();
 628 #endif
 629 ],
 630 [return (putenv == 0);],
 631 bash_cv_std_putenv=yes, bash_cv_std_putenv=no
 632 )])
 633 if test $bash_cv_std_putenv = yes; then
 634 AC_DEFINE(HAVE_STD_PUTENV)
 635 fi
 636 ])
 637
 638 # We should check for unsetenv before calling this
 639 AC_DEFUN(BASH_FUNC_STD_UNSETENV,
 640 [
 641 AC_REQUIRE([AC_HEADER_STDC])
 642 AC_REQUIRE([AC_C_PROTOTYPES])
 643 AC_CACHE_CHECK([for standard-conformant unsetenv declaration], bash_cv_std_unsetenv,
 644 [AC_TRY_LINK([
 645 #if STDC_HEADERS
 646 #include <stdlib.h>
 647 #include <stddef.h>
 648 #endif
 649 #ifndef __STDC__
 650 #  ifndef const
 651 #    define const
 652 #  endif
 653 #endif
 654 #ifdef PROTOTYPES
 655 extern int unsetenv (const char *);
 656 #else
 657 extern int unsetenv ();
 658 #endif
 659 ],
 660 [return (unsetenv == 0);],
 661 bash_cv_std_unsetenv=yes, bash_cv_std_unsetenv=no
 662 )])
 663 if test $bash_cv_std_unsetenv = yes; then
 664 AC_DEFINE(HAVE_STD_UNSETENV)
 665 fi
 666 ])
 667
 668 AC_DEFUN(BASH_FUNC_ULIMIT_MAXFDS,
 669 [AC_MSG_CHECKING(whether ulimit can substitute for getdtablesize)
 670 AC_CACHE_VAL(bash_cv_ulimit_maxfds,
 671 [AC_TRY_RUN([
 672 main()
 673 {
 674 long maxfds = ulimit(4, 0L);
 675 exit (maxfds == -1L);
 676 }
 677 ], bash_cv_ulimit_maxfds=yes, bash_cv_ulimit_maxfds=no,
 678    [AC_MSG_WARN(cannot check ulimit if cross compiling -- defaulting to no)
 679     bash_cv_ulimit_maxfds=no]
 680 )])
 681 AC_MSG_RESULT($bash_cv_ulimit_maxfds)
 682 if test $bash_cv_ulimit_maxfds = yes; then
 683 AC_DEFINE(ULIMIT_MAXFDS)
 684 fi
 685 ])
 686
 687 AC_DEFUN(BASH_FUNC_GETCWD,
 688 [AC_MSG_CHECKING([if getcwd() calls popen()])
 689 AC_CACHE_VAL(bash_cv_getcwd_calls_popen,
 690 [AC_TRY_RUN([
 691 #include <stdio.h>
 692 #ifdef HAVE_UNISTD_H
 693 #include <unistd.h>
 694 #endif
 695
 696 #ifndef __STDC__
 697 #ifndef const
 698 #define const
 699 #endif
 700 #endif
 701
 702 int popen_called;
 703
 704 FILE *
 705 popen(command, type)
 706      const char *command;
 707      const char *type;
 708 {
 709         popen_called = 1;
 710         return (FILE *)NULL;
 711 }
 712
 713 FILE *_popen(command, type)
 714      const char *command;
 715      const char *type;
 716 {
 717   return (popen (command, type));
 718 }
 719
 720 int
 721 pclose(stream)
 722 FILE *stream;
 723 {
 724         return 0;
 725 }
 726
 727 int
 728 _pclose(stream)
 729 FILE *stream;
 730 {
 731         return 0;
 732 }
 733
 734 main()
 735 {
 736         char    lbuf[32];
 737         popen_called = 0;
 738         getcwd(lbuf, 32);
 739         exit (popen_called);
 740 }
 741 ], bash_cv_getcwd_calls_popen=no, bash_cv_getcwd_calls_popen=yes,
 742    [AC_MSG_WARN(cannot check whether getcwd calls popen if cross compiling -- defaulting to no)
 743     bash_cv_getcwd_calls_popen=no]
 744 )])
 745 AC_MSG_RESULT($bash_cv_getcwd_calls_popen)
 746 if test $bash_cv_getcwd_calls_popen = yes; then
 747 AC_DEFINE(GETCWD_BROKEN)
 748 AC_LIBOBJ(getcwd)
 749 fi
 750 ])
 751
 752 dnl
 753 dnl This needs BASH_CHECK_SOCKLIB, but since that's not called on every
 754 dnl system, we can't use AC_PREREQ
 755 dnl
 756 AC_DEFUN(BASH_FUNC_GETHOSTBYNAME,
 757 [if test "X$bash_cv_have_gethostbyname" = "X"; then
 758 _bash_needmsg=yes
 759 else
 760 AC_MSG_CHECKING(for gethostbyname in socket library)
 761 _bash_needmsg=
 762 fi
 763 AC_CACHE_VAL(bash_cv_have_gethostbyname,
 764 [AC_TRY_LINK([#include <netdb.h>],
 765 [ struct hostent *hp;
 766   hp = gethostbyname("localhost");
 767 ], bash_cv_have_gethostbyname=yes, bash_cv_have_gethostbyname=no)]
 768 )
 769 if test "X$_bash_needmsg" = Xyes; then
 770     AC_MSG_CHECKING(for gethostbyname in socket library)
 771 fi
 772 AC_MSG_RESULT($bash_cv_have_gethostbyname)
 773 if test "$bash_cv_have_gethostbyname" = yes; then
 774 AC_DEFINE(HAVE_GETHOSTBYNAME)
 775 fi
 776 ])
 777
 778 AC_DEFUN(BASH_FUNC_FNMATCH_EXTMATCH,
 779 [AC_MSG_CHECKING(if fnmatch does extended pattern matching with FNM_EXTMATCH)
 780 AC_CACHE_VAL(bash_cv_fnm_extmatch,
 781 [AC_TRY_RUN([
 782 #include <fnmatch.h>
 783
 784 main()
 785 {
 786 #ifdef FNM_EXTMATCH
 787   exit (0);
 788 #else
 789   exit (1);
 790 #endif
 791 }
 792 ], bash_cv_fnm_extmatch=yes, bash_cv_fnm_extmatch=no,
 793     [AC_MSG_WARN(cannot check FNM_EXTMATCH if cross compiling -- defaulting to no)
 794      bash_cv_fnm_extmatch=no])
 795 ])
 796 AC_MSG_RESULT($bash_cv_fnm_extmatch)
 797 if test $bash_cv_fnm_extmatch = yes; then
 798 AC_DEFINE(HAVE_LIBC_FNM_EXTMATCH)
 799 fi
 800 ])
 801
 802 AC_DEFUN(BASH_FUNC_POSIX_SETJMP,
 803 [AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE])
 804 AC_MSG_CHECKING(for presence of POSIX-style sigsetjmp/siglongjmp)
 805 AC_CACHE_VAL(bash_cv_func_sigsetjmp,
 806 [AC_TRY_RUN([
 807 #ifdef HAVE_UNISTD_H
 808 #include <unistd.h>
 809 #endif
 810 #include <sys/types.h>
 811 #include <signal.h>
 812 #include <setjmp.h>
 813
 814 main()
 815 {
 816 #if !defined (_POSIX_VERSION) || !defined (HAVE_POSIX_SIGNALS)
 817 exit (1);
 818 #else
 819
 820 int code;
 821 sigset_t set, oset;
 822 sigjmp_buf xx;
 823
 824 /* get the mask */
 825 sigemptyset(&set);
 826 sigemptyset(&oset);
 827 sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &set);
 828 sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset);
 829
 830 /* save it */
 831 code = sigsetjmp(xx, 1);
 832 if (code)
 833   exit(0);      /* could get sigmask and compare to oset here. */
 834
 835 /* change it */
 836 sigaddset(&set, SIGINT);
 837 sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
 838
 839 /* and siglongjmp */
 840 siglongjmp(xx, 10);
 841 exit(1);
 842 #endif
 843 }], bash_cv_func_sigsetjmp=present, bash_cv_func_sigsetjmp=missing,
 844     [AC_MSG_WARN(cannot check for sigsetjmp/siglongjmp if cross-compiling -- defaulting to missing)
 845      bash_cv_func_sigsetjmp=missing]
 846 )])
 847 AC_MSG_RESULT($bash_cv_func_sigsetjmp)
 848 if test $bash_cv_func_sigsetjmp = present; then
 849 AC_DEFINE(HAVE_POSIX_SIGSETJMP)
 850 fi
 851 ])
 852
 853 AC_DEFUN(BASH_FUNC_STRCOLL,
 854 [
 855 AC_MSG_CHECKING(whether or not strcoll and strcmp differ)
 856 AC_CACHE_VAL(bash_cv_func_strcoll_broken,
 857 [AC_TRY_RUN([
 858 #include <stdio.h>
 859 #if defined (HAVE_LOCALE_H)
 860 #include <locale.h>
 861 #endif
 862
 863 main(c, v)
 864 int     c;
 865 char    *v[];
 866 {
 867         int     r1, r2;
 868         char    *deflocale, *defcoll;
 869
 870 #ifdef HAVE_SETLOCALE
 871         deflocale = setlocale(LC_ALL, "");
 872         defcoll = setlocale(LC_COLLATE, "");
 873 #endif
 874
 875 #ifdef HAVE_STRCOLL
 876         /* These two values are taken from tests/glob-test. */
 877         r1 = strcoll("abd", "aXd");
 878 #else
 879         r1 = 0;
 880 #endif
 881         r2 = strcmp("abd", "aXd");
 882
 883         /* These two should both be greater than 0.  It is permissible for
 884            a system to return different values, as long as the sign is the
 885            same. */
 886
 887         /* Exit with 1 (failure) if these two values are both > 0, since
 888            this tests whether strcoll(3) is broken with respect to strcmp(3)
 889            in the default locale. */
 890         exit (r1 > 0 && r2 > 0);
 891 }
 892 ], bash_cv_func_strcoll_broken=yes, bash_cv_func_strcoll_broken=no,
 893    [AC_MSG_WARN(cannot check strcoll if cross compiling -- defaulting to no)
 894     bash_cv_func_strcoll_broken=no]
 895 )])
 896 AC_MSG_RESULT($bash_cv_func_strcoll_broken)
 897 if test $bash_cv_func_strcoll_broken = yes; then
 898 AC_DEFINE(STRCOLL_BROKEN)
 899 fi
 900 ])
 901
 902 AC_DEFUN(BASH_FUNC_PRINTF_A_FORMAT,
 903 [AC_MSG_CHECKING([for printf floating point output in hex notation])
 904 AC_CACHE_VAL(bash_cv_printf_a_format,
 905 [AC_TRY_RUN([
 906 #include <stdio.h>
 907 #include <string.h>
 908
 909 int
 910 main()
 911 {
 912         double y = 0.0;
 913         char abuf[1024];
 914
 915         sprintf(abuf, "%A", y);
 916         exit(strchr(abuf, 'P') == (char *)0);
 917 }
 918 ], bash_cv_printf_a_format=yes, bash_cv_printf_a_format=no,
 919    [AC_MSG_WARN(cannot check printf if cross compiling -- defaulting to no)
 920     bash_cv_printf_a_format=no]
 921 )])
 922 AC_MSG_RESULT($bash_cv_printf_a_format)
 923 if test $bash_cv_printf_a_format = yes; then
 924 AC_DEFINE(HAVE_PRINTF_A_FORMAT)
 925 fi
 926 ])
 927
 928 AC_DEFUN(BASH_STRUCT_TERMIOS_LDISC,
 929 [
 930 AC_CHECK_MEMBER(struct termios.c_line, AC_DEFINE(TERMIOS_LDISC), ,[
 931 #include <sys/types.h>
 932 #include <termios.h>
 933 ])
 934 ])
 935
 936 AC_DEFUN(BASH_STRUCT_TERMIO_LDISC,
 937 [
 938 AC_CHECK_MEMBER(struct termio.c_line, AC_DEFINE(TERMIO_LDISC), ,[
 939 #include <sys/types.h>
 940 #include <termio.h>
 941 ])
 942 ])
 943
 944 dnl
 945 dnl Like AC_STRUCT_ST_BLOCKS, but doesn't muck with LIBOBJS
 946 dnl
 947 dnl sets bash_cv_struct_stat_st_blocks
 948 dnl
 949 dnl unused for now; we'll see how AC_CHECK_MEMBERS works
 950 dnl
 951 AC_DEFUN(BASH_STRUCT_ST_BLOCKS,
 952 [
 953 AC_MSG_CHECKING([for struct stat.st_blocks])
 954 AC_CACHE_VAL(bash_cv_struct_stat_st_blocks,
 955 [AC_TRY_COMPILE(
 956 [
 957 #include <sys/types.h>
 958 #include <sys/stat.h>
 959 ],
 960 [
 961 main()
 962 {
 963 static struct stat a;
 964 if (a.st_blocks) return 0;
 965 return 0;
 966 }
 967 ], bash_cv_struct_stat_st_blocks=yes, bash_cv_struct_stat_st_blocks=no)
 968 ])
 969 AC_MSG_RESULT($bash_cv_struct_stat_st_blocks)
 970 if test "$bash_cv_struct_stat_st_blocks" = "yes"; then
 971 AC_DEFINE(HAVE_STRUCT_STAT_ST_BLOCKS)
 972 fi
 973 ])
 974
 975 AC_DEFUN(BASH_CHECK_LIB_TERMCAP,
 976 [
 977 if test "X$bash_cv_termcap_lib" = "X"; then
 978 _bash_needmsg=yes
 979 else
 980 AC_MSG_CHECKING(which library has the termcap functions)
 981 _bash_needmsg=
 982 fi
 983 AC_CACHE_VAL(bash_cv_termcap_lib,
 984 [AC_CHECK_LIB(termcap, tgetent, bash_cv_termcap_lib=libtermcap,
 985     [AC_CHECK_LIB(tinfo, tgetent, bash_cv_termcap_lib=libtinfo,
 986         [AC_CHECK_LIB(curses, tgetent, bash_cv_termcap_lib=libcurses,
 987             [AC_CHECK_LIB(ncurses, tgetent, bash_cv_termcap_lib=libncurses,
 988                 bash_cv_termcap_lib=gnutermcap)])])])])
 989 if test "X$_bash_needmsg" = "Xyes"; then
 990 AC_MSG_CHECKING(which library has the termcap functions)
 991 fi
 992 AC_MSG_RESULT(using $bash_cv_termcap_lib)
 993 if test $bash_cv_termcap_lib = gnutermcap && test -z "$prefer_curses"; then
 994 LDFLAGS="$LDFLAGS -L./lib/termcap"
 995 TERMCAP_LIB="./lib/termcap/libtermcap.a"
 996 TERMCAP_DEP="./lib/termcap/libtermcap.a"
 997 elif test $bash_cv_termcap_lib = libtermcap && test -z "$prefer_curses"; then
 998 TERMCAP_LIB=-ltermcap
 999 TERMCAP_DEP=
1000 elif test $bash_cv_termcap_lib = libtinfo; then
1001 TERMCAP_LIB=-ltinfo
1002 TERMCAP_DEP=
1003 elif test $bash_cv_termcap_lib = libncurses; then
1004 TERMCAP_LIB=-lncurses
1005 TERMCAP_DEP=
1006 else
1007 TERMCAP_LIB=-lcurses
1008 TERMCAP_DEP=
1009 fi
1010 ])
1011
1012 dnl
1013 dnl Check for the presence of getpeername in libsocket.
1014 dnl If libsocket is present, check for libnsl and add it to LIBS if
1015 dnl it's there, since most systems with libsocket require linking
1016 dnl with libnsl as well.  This should only be called if getpeername
1017 dnl was not found in libc.
1018 dnl
1019 dnl NOTE: IF WE FIND GETPEERNAME, WE ASSUME THAT WE HAVE BIND/CONNECT
1020 dnl       AS WELL
1021 dnl
1022 AC_DEFUN(BASH_CHECK_LIB_SOCKET,
1023 [
1024 if test "X$bash_cv_have_socklib" = "X"; then
1025 _bash_needmsg=
1026 else
1027 AC_MSG_CHECKING(for socket library)
1028 _bash_needmsg=yes
1029 fi
1030 AC_CACHE_VAL(bash_cv_have_socklib,
1031 [AC_CHECK_LIB(socket, getpeername,
1032         bash_cv_have_socklib=yes, bash_cv_have_socklib=no, -lnsl)])
1033 if test "X$_bash_needmsg" = Xyes; then
1034   AC_MSG_RESULT($bash_cv_have_socklib)
1035   _bash_needmsg=
1036 fi
1037 if test $bash_cv_have_socklib = yes; then
1038   # check for libnsl, add it to LIBS if present
1039   if test "X$bash_cv_have_libnsl" = "X"; then
1040     _bash_needmsg=
1041   else
1042     AC_MSG_CHECKING(for libnsl)
1043     _bash_needmsg=yes
1044   fi
1045   AC_CACHE_VAL(bash_cv_have_libnsl,
1046            [AC_CHECK_LIB(nsl, t_open,
1047                  bash_cv_have_libnsl=yes, bash_cv_have_libnsl=no)])
1048   if test "X$_bash_needmsg" = Xyes; then
1049     AC_MSG_RESULT($bash_cv_have_libnsl)
1050     _bash_needmsg=
1051   fi
1052   if test $bash_cv_have_libnsl = yes; then
1053     LIBS="-lsocket -lnsl $LIBS"
1054   else
1055     LIBS="-lsocket $LIBS"
1056   fi
1057   AC_DEFINE(HAVE_LIBSOCKET)
1058   AC_DEFINE(HAVE_GETPEERNAME)
1059 fi
1060 ])
1061
1062 AC_DEFUN(BASH_STRUCT_DIRENT_D_INO,
1063 [AC_REQUIRE([AC_HEADER_DIRENT])
1064 AC_MSG_CHECKING(if struct dirent has a d_ino member)
1065 AC_CACHE_VAL(bash_cv_dirent_has_dino,
1066 [AC_TRY_COMPILE([
1067 #include <stdio.h>
1068 #include <sys/types.h>
1069 #ifdef HAVE_UNISTD_H
1070 # include <unistd.h>
1071 #endif /* HAVE_UNISTD_H */
1072 #if defined(HAVE_DIRENT_H)
1073 # include <dirent.h>
1074 #else
1075 # define dirent direct
1076 # ifdef HAVE_SYS_NDIR_H
1077 #  include <sys/ndir.h>
1078 # endif /* SYSNDIR */
1079 # ifdef HAVE_SYS_DIR_H
1080 #  include <sys/dir.h>
1081 # endif /* SYSDIR */
1082 # ifdef HAVE_NDIR_H
1083 #  include <ndir.h>
1084 # endif
1085 #endif /* HAVE_DIRENT_H */
1086 ],[
1087 struct dirent d; int z; z = d.d_ino;
1088 ], bash_cv_dirent_has_dino=yes, bash_cv_dirent_has_dino=no)])
1089 AC_MSG_RESULT($bash_cv_dirent_has_dino)
1090 if test $bash_cv_dirent_has_dino = yes; then
1091 AC_DEFINE(STRUCT_DIRENT_HAS_D_INO)
1092 fi
1093 ])
1094
1095 AC_DEFUN(BASH_STRUCT_DIRENT_D_FILENO,
1096 [AC_REQUIRE([AC_HEADER_DIRENT])
1097 AC_MSG_CHECKING(if struct dirent has a d_fileno member)
1098 AC_CACHE_VAL(bash_cv_dirent_has_d_fileno,
1099 [AC_TRY_COMPILE([
1100 #include <stdio.h>
1101 #include <sys/types.h>
1102 #ifdef HAVE_UNISTD_H
1103 # include <unistd.h>
1104 #endif /* HAVE_UNISTD_H */
1105 #if defined(HAVE_DIRENT_H)
1106 # include <dirent.h>
1107 #else
1108 # define dirent direct
1109 # ifdef HAVE_SYS_NDIR_H
1110 #  include <sys/ndir.h>
1111 # endif /* SYSNDIR */
1112 # ifdef HAVE_SYS_DIR_H
1113 #  include <sys/dir.h>
1114 # endif /* SYSDIR */
1115 # ifdef HAVE_NDIR_H
1116 #  include <ndir.h>
1117 # endif
1118 #endif /* HAVE_DIRENT_H */
1119 ],[
1120 struct dirent d; int z; z = d.d_fileno;
1121 ], bash_cv_dirent_has_d_fileno=yes, bash_cv_dirent_has_d_fileno=no)])
1122 AC_MSG_RESULT($bash_cv_dirent_has_d_fileno)
1123 if test $bash_cv_dirent_has_d_fileno = yes; then
1124 AC_DEFINE(STRUCT_DIRENT_HAS_D_FILENO)
1125 fi
1126 ])
1127
1128 AC_DEFUN(BASH_STRUCT_TIMEVAL,
1129 [AC_MSG_CHECKING(for struct timeval in sys/time.h and time.h)
1130 AC_CACHE_VAL(bash_cv_struct_timeval,
1131 [
1132 AC_EGREP_HEADER(struct timeval, sys/time.h,
1133                 bash_cv_struct_timeval=yes,
1134                 AC_EGREP_HEADER(struct timeval, time.h,
1135                         bash_cv_struct_timeval=yes,
1136                         bash_cv_struct_timeval=no))
1137 ])
1138 AC_MSG_RESULT($bash_cv_struct_timeval)
1139 if test $bash_cv_struct_timeval = yes; then
1140   AC_DEFINE(HAVE_TIMEVAL)
1141 fi
1142 ])
1143
1144 AC_DEFUN(BASH_STRUCT_WINSIZE,
1145 [AC_MSG_CHECKING(for struct winsize in sys/ioctl.h and termios.h)
1146 AC_CACHE_VAL(bash_cv_struct_winsize_header,
1147 [AC_TRY_COMPILE([#include <sys/types.h>
1148 #include <sys/ioctl.h>], [struct winsize x;],
1149   bash_cv_struct_winsize_header=ioctl_h,
1150   [AC_TRY_COMPILE([#include <sys/types.h>
1151 #include <termios.h>], [struct winsize x;],
1152   bash_cv_struct_winsize_header=termios_h, bash_cv_struct_winsize_header=other)
1153 ])])
1154 if test $bash_cv_struct_winsize_header = ioctl_h; then
1155   AC_MSG_RESULT(sys/ioctl.h)
1156   AC_DEFINE(STRUCT_WINSIZE_IN_SYS_IOCTL)
1157 elif test $bash_cv_struct_winsize_header = termios_h; then
1158   AC_MSG_RESULT(termios.h)
1159   AC_DEFINE(STRUCT_WINSIZE_IN_TERMIOS)
1160 else
1161   AC_MSG_RESULT(not found)
1162 fi
1163 ])
1164
1165 dnl Check type of signal routines (posix, 4.2bsd, 4.1bsd or v7)
1166 AC_DEFUN(BASH_SYS_SIGNAL_VINTAGE,
1167 [AC_REQUIRE([AC_TYPE_SIGNAL])
1168 AC_MSG_CHECKING(for type of signal functions)
1169 AC_CACHE_VAL(bash_cv_signal_vintage,
1170 [
1171   AC_TRY_LINK([#include <signal.h>],[
1172     sigset_t ss;
1173     struct sigaction sa;
1174     sigemptyset(&ss); sigsuspend(&ss);
1175     sigaction(SIGINT, &sa, (struct sigaction *) 0);
1176     sigprocmask(SIG_BLOCK, &ss, (sigset_t *) 0);
1177   ], bash_cv_signal_vintage=posix,
1178   [
1179     AC_TRY_LINK([#include <signal.h>], [
1180         int mask = sigmask(SIGINT);
1181         sigsetmask(mask); sigblock(mask); sigpause(mask);
1182     ], bash_cv_signal_vintage=4.2bsd,
1183     [
1184       AC_TRY_LINK([
1185         #include <signal.h>
1186         RETSIGTYPE foo() { }], [
1187                 int mask = sigmask(SIGINT);
1188                 sigset(SIGINT, foo); sigrelse(SIGINT);
1189                 sighold(SIGINT); sigpause(SIGINT);
1190         ], bash_cv_signal_vintage=svr3, bash_cv_signal_vintage=v7
1191     )]
1192   )]
1193 )
1194 ])
1195 AC_MSG_RESULT($bash_cv_signal_vintage)
1196 if test "$bash_cv_signal_vintage" = posix; then
1197 AC_DEFINE(HAVE_POSIX_SIGNALS)
1198 elif test "$bash_cv_signal_vintage" = "4.2bsd"; then
1199 AC_DEFINE(HAVE_BSD_SIGNALS)
1200 elif test "$bash_cv_signal_vintage" = svr3; then
1201 AC_DEFINE(HAVE_USG_SIGHOLD)
1202 fi
1203 ])
1204
1205 dnl Check if the pgrp of setpgrp() can't be the pid of a zombie process.
1206 AC_DEFUN(BASH_SYS_PGRP_SYNC,
1207 [AC_REQUIRE([AC_FUNC_GETPGRP])
1208 AC_MSG_CHECKING(whether pgrps need synchronization)
1209 AC_CACHE_VAL(bash_cv_pgrp_pipe,
1210 [AC_TRY_RUN([
1211 #ifdef HAVE_UNISTD_H
1212 #  include <unistd.h>
1213 #endif
1214 main()
1215 {
1216 # ifdef GETPGRP_VOID
1217 #  define getpgID()     getpgrp()
1218 # else
1219 #  define getpgID()     getpgrp(0)
1220 #  define setpgid(x,y)  setpgrp(x,y)
1221 # endif
1222         int pid1, pid2, fds[2];
1223         int status;
1224         char ok;
1225
1226         switch (pid1 = fork()) {
1227           case -1:
1228             exit(1);
1229           case 0:
1230             setpgid(0, getpid());
1231             exit(0);
1232         }
1233         setpgid(pid1, pid1);
1234
1235         sleep(2);       /* let first child die */
1236
1237         if (pipe(fds) < 0)
1238           exit(2);
1239
1240         switch (pid2 = fork()) {
1241           case -1:
1242             exit(3);
1243           case 0:
1244             setpgid(0, pid1);
1245             ok = getpgID() == pid1;
1246             write(fds[1], &ok, 1);
1247             exit(0);
1248         }
1249         setpgid(pid2, pid1);
1250
1251         close(fds[1]);
1252         if (read(fds[0], &ok, 1) != 1)
1253           exit(4);
1254         wait(&status);
1255         wait(&status);
1256         exit(ok ? 0 : 5);
1257 }
1258 ], bash_cv_pgrp_pipe=no,bash_cv_pgrp_pipe=yes,
1259    [AC_MSG_WARN(cannot check pgrp synchronization if cross compiling -- defaulting to no)
1260     bash_cv_pgrp_pipe=no])
1261 ])
1262 AC_MSG_RESULT($bash_cv_pgrp_pipe)
1263 if test $bash_cv_pgrp_pipe = yes; then
1264 AC_DEFINE(PGRP_PIPE)
1265 fi
1266 ])
1267
1268 AC_DEFUN(BASH_SYS_REINSTALL_SIGHANDLERS,
1269 [AC_REQUIRE([AC_TYPE_SIGNAL])
1270 AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE])
1271 AC_MSG_CHECKING([if signal handlers must be reinstalled when invoked])
1272 AC_CACHE_VAL(bash_cv_must_reinstall_sighandlers,
1273 [AC_TRY_RUN([
1274 #include <signal.h>
1275 #ifdef HAVE_UNISTD_H
1276 #include <unistd.h>
1277 #endif
1278
1279 typedef RETSIGTYPE sigfunc();
1280
1281 int nsigint;
1282
1283 #ifdef HAVE_POSIX_SIGNALS
1284 sigfunc *
1285 set_signal_handler(sig, handler)
1286      int sig;
1287      sigfunc *handler;
1288 {
1289   struct sigaction act, oact;
1290   act.sa_handler = handler;
1291   act.sa_flags = 0;
1292   sigemptyset (&act.sa_mask);
1293   sigemptyset (&oact.sa_mask);
1294   sigaction (sig, &act, &oact);
1295   return (oact.sa_handler);
1296 }
1297 #else
1298 #define set_signal_handler(s, h) signal(s, h)
1299 #endif
1300
1301 RETSIGTYPE
1302 sigint(s)
1303 int s;
1304 {
1305   nsigint++;
1306 }
1307
1308 main()
1309 {
1310         nsigint = 0;
1311         set_signal_handler(SIGINT, sigint);
1312         kill((int)getpid(), SIGINT);
1313         kill((int)getpid(), SIGINT);
1314         exit(nsigint != 2);
1315 }
1316 ], bash_cv_must_reinstall_sighandlers=no, bash_cv_must_reinstall_sighandlers=yes,
1317    [AC_MSG_WARN(cannot check signal handling if cross compiling -- defaulting to no)
1318     bash_cv_must_reinstall_sighandlers=no]
1319 )])
1320 AC_MSG_RESULT($bash_cv_must_reinstall_sighandlers)
1321 if test $bash_cv_must_reinstall_sighandlers = yes; then
1322 AC_DEFINE(MUST_REINSTALL_SIGHANDLERS)
1323 fi
1324 ])
1325
1326 dnl check that some necessary job control definitions are present
1327 AC_DEFUN(BASH_SYS_JOB_CONTROL_MISSING,
1328 [AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE])
1329 AC_MSG_CHECKING(for presence of necessary job control definitions)
1330 AC_CACHE_VAL(bash_cv_job_control_missing,
1331 [AC_TRY_RUN([
1332 #include <sys/types.h>
1333 #ifdef HAVE_SYS_WAIT_H
1334 #include <sys/wait.h>
1335 #endif
1336 #ifdef HAVE_UNISTD_H
1337 #include <unistd.h>
1338 #endif
1339 #include <signal.h>
1340
1341 /* Add more tests in here as appropriate. */
1342 main()
1343 {
1344 /* signal type */
1345 #if !defined (HAVE_POSIX_SIGNALS) && !defined (HAVE_BSD_SIGNALS)
1346 exit(1);
1347 #endif
1348
1349 /* signals and tty control. */
1350 #if !defined (SIGTSTP) || !defined (SIGSTOP) || !defined (SIGCONT)
1351 exit (1);
1352 #endif
1353
1354 /* process control */
1355 #if !defined (WNOHANG) || !defined (WUNTRACED)
1356 exit(1);
1357 #endif
1358
1359 /* Posix systems have tcgetpgrp and waitpid. */
1360 #if defined (_POSIX_VERSION) && !defined (HAVE_TCGETPGRP)
1361 exit(1);
1362 #endif
1363
1364 #if defined (_POSIX_VERSION) && !defined (HAVE_WAITPID)
1365 exit(1);
1366 #endif
1367
1368 /* Other systems have TIOCSPGRP/TIOCGPRGP and wait3. */
1369 #if !defined (_POSIX_VERSION) && !defined (HAVE_WAIT3)
1370 exit(1);
1371 #endif
1372
1373 exit(0);
1374 }], bash_cv_job_control_missing=present, bash_cv_job_control_missing=missing,
1375     [AC_MSG_WARN(cannot check job control if cross-compiling -- defaulting to missing)
1376      bash_cv_job_control_missing=missing]
1377 )])
1378 AC_MSG_RESULT($bash_cv_job_control_missing)
1379 if test $bash_cv_job_control_missing = missing; then
1380 AC_DEFINE(JOB_CONTROL_MISSING)
1381 fi
1382 ])
1383
1384 dnl check whether named pipes are present
1385 dnl this requires a previous check for mkfifo, but that is awkward to specify
1386 AC_DEFUN(BASH_SYS_NAMED_PIPES,
1387 [AC_MSG_CHECKING(for presence of named pipes)
1388 AC_CACHE_VAL(bash_cv_sys_named_pipes,
1389 [AC_TRY_RUN([
1390 #include <sys/types.h>
1391 #include <sys/stat.h>
1392 #ifdef HAVE_UNISTD_H
1393 #include <unistd.h>
1394 #endif
1395
1396 /* Add more tests in here as appropriate. */
1397 main()
1398 {
1399 int fd, err;
1400
1401 #if defined (HAVE_MKFIFO)
1402 exit (0);
1403 #endif
1404
1405 #if !defined (S_IFIFO) && (defined (_POSIX_VERSION) && !defined (S_ISFIFO))
1406 exit (1);
1407 #endif
1408
1409 #if defined (NeXT)
1410 exit (1);
1411 #endif
1412 err = mkdir("/tmp/bash-aclocal", 0700);
1413 if (err < 0) {
1414   perror ("mkdir");
1415   exit(1);
1416 }
1417 fd = mknod ("/tmp/bash-aclocal/sh-np-autoconf", 0666 | S_IFIFO, 0);
1418 if (fd == -1) {
1419   rmdir ("/tmp/bash-aclocal");
1420   exit (1);
1421 }
1422 close(fd);
1423 unlink ("/tmp/bash-aclocal/sh-np-autoconf");
1424 rmdir ("/tmp/bash-aclocal");
1425 exit(0);
1426 }], bash_cv_sys_named_pipes=present, bash_cv_sys_named_pipes=missing,
1427     [AC_MSG_WARN(cannot check for named pipes if cross-compiling -- defaulting to missing)
1428      bash_cv_sys_named_pipes=missing]
1429 )])
1430 AC_MSG_RESULT($bash_cv_sys_named_pipes)
1431 if test $bash_cv_sys_named_pipes = missing; then
1432 AC_DEFINE(NAMED_PIPES_MISSING)
1433 fi
1434 ])
1435
1436 AC_DEFUN(BASH_SYS_DEFAULT_MAIL_DIR,
1437 [AC_MSG_CHECKING(for default mail directory)
1438 AC_CACHE_VAL(bash_cv_mail_dir,
1439 [if test -d /var/mail; then
1440    bash_cv_mail_dir=/var/mail
1441  elif test -d /var/spool/mail; then
1442    bash_cv_mail_dir=/var/spool/mail
1443  elif test -d /usr/mail; then
1444    bash_cv_mail_dir=/usr/mail
1445  elif test -d /usr/spool/mail; then
1446    bash_cv_mail_dir=/usr/spool/mail
1447  else
1448    bash_cv_mail_dir=unknown
1449  fi
1450 ])
1451 AC_MSG_RESULT($bash_cv_mail_dir)
1452 AC_DEFINE_UNQUOTED(DEFAULT_MAIL_DIRECTORY, "$bash_cv_mail_dir")
1453 ])
1454
1455 AC_DEFUN(BASH_HAVE_TIOCGWINSZ,
1456 [AC_MSG_CHECKING(for TIOCGWINSZ in sys/ioctl.h)
1457 AC_CACHE_VAL(bash_cv_tiocgwinsz_in_ioctl,
1458 [AC_TRY_COMPILE([#include <sys/types.h>
1459 #include <sys/ioctl.h>], [int x = TIOCGWINSZ;],
1460   bash_cv_tiocgwinsz_in_ioctl=yes,bash_cv_tiocgwinsz_in_ioctl=no)])
1461 AC_MSG_RESULT($bash_cv_tiocgwinsz_in_ioctl)
1462 if test $bash_cv_tiocgwinsz_in_ioctl = yes; then
1463 AC_DEFINE(GWINSZ_IN_SYS_IOCTL)
1464 fi
1465 ])
1466
1467 AC_DEFUN(BASH_HAVE_TIOCSTAT,
1468 [AC_MSG_CHECKING(for TIOCSTAT in sys/ioctl.h)
1469 AC_CACHE_VAL(bash_cv_tiocstat_in_ioctl,
1470 [AC_TRY_COMPILE([#include <sys/types.h>
1471 #include <sys/ioctl.h>], [int x = TIOCSTAT;],
1472   bash_cv_tiocstat_in_ioctl=yes,bash_cv_tiocstat_in_ioctl=no)])
1473 AC_MSG_RESULT($bash_cv_tiocstat_in_ioctl)
1474 if test $bash_cv_tiocstat_in_ioctl = yes; then
1475 AC_DEFINE(TIOCSTAT_IN_SYS_IOCTL)
1476 fi
1477 ])
1478
1479 AC_DEFUN(BASH_HAVE_FIONREAD,
1480 [AC_MSG_CHECKING(for FIONREAD in sys/ioctl.h)
1481 AC_CACHE_VAL(bash_cv_fionread_in_ioctl,
1482 [AC_TRY_COMPILE([#include <sys/types.h>
1483 #include <sys/ioctl.h>], [int x = FIONREAD;],
1484   bash_cv_fionread_in_ioctl=yes,bash_cv_fionread_in_ioctl=no)])
1485 AC_MSG_RESULT($bash_cv_fionread_in_ioctl)
1486 if test $bash_cv_fionread_in_ioctl = yes; then
1487 AC_DEFINE(FIONREAD_IN_SYS_IOCTL)
1488 fi
1489 ])
1490
1491 dnl
1492 dnl See if speed_t is declared in <sys/types.h>.  Some versions of linux
1493 dnl require a definition of speed_t each time <termcap.h> is included,
1494 dnl but you can only get speed_t if you include <termios.h> (on some
1495 dnl versions) or <sys/types.h> (on others).
1496 dnl
1497 AC_DEFUN(BASH_CHECK_SPEED_T,
1498 [AC_MSG_CHECKING(for speed_t in sys/types.h)
1499 AC_CACHE_VAL(bash_cv_speed_t_in_sys_types,
1500 [AC_TRY_COMPILE([#include <sys/types.h>], [speed_t x;],
1501   bash_cv_speed_t_in_sys_types=yes,bash_cv_speed_t_in_sys_types=no)])
1502 AC_MSG_RESULT($bash_cv_speed_t_in_sys_types)
1503 if test $bash_cv_speed_t_in_sys_types = yes; then
1504 AC_DEFINE(SPEED_T_IN_SYS_TYPES)
1505 fi
1506 ])
1507
1508 AC_DEFUN(BASH_CHECK_GETPW_FUNCS,
1509 [AC_MSG_CHECKING(whether getpw functions are declared in pwd.h)
1510 AC_CACHE_VAL(bash_cv_getpw_declared,
1511 [AC_EGREP_CPP(getpwuid,
1512 [
1513 #include <sys/types.h>
1514 #ifdef HAVE_UNISTD_H
1515 #  include <unistd.h>
1516 #endif
1517 #include <pwd.h>
1518 ],
1519 bash_cv_getpw_declared=yes,bash_cv_getpw_declared=no)])
1520 AC_MSG_RESULT($bash_cv_getpw_declared)
1521 if test $bash_cv_getpw_declared = yes; then
1522 AC_DEFINE(HAVE_GETPW_DECLS)
1523 fi
1524 ])
1525
1526 AC_DEFUN(BASH_CHECK_DEV_FD,
1527 [AC_MSG_CHECKING(whether /dev/fd is available)
1528 AC_CACHE_VAL(bash_cv_dev_fd,
1529 [if test -d /dev/fd  && test -r /dev/fd/0; then
1530    bash_cv_dev_fd=standard
1531  elif test -d /proc/self/fd && test -r /proc/self/fd/0; then
1532    bash_cv_dev_fd=whacky
1533  else
1534    bash_cv_dev_fd=absent
1535  fi
1536 ])
1537 AC_MSG_RESULT($bash_cv_dev_fd)
1538 if test $bash_cv_dev_fd = "standard"; then
1539   AC_DEFINE(HAVE_DEV_FD)
1540   AC_DEFINE(DEV_FD_PREFIX, "/dev/fd/")
1541 elif test $bash_cv_dev_fd = "whacky"; then
1542   AC_DEFINE(HAVE_DEV_FD)
1543   AC_DEFINE(DEV_FD_PREFIX, "/proc/self/fd/")
1544 fi
1545 ])
1546
1547 AC_DEFUN(BASH_CHECK_DEV_STDIN,
1548 [AC_MSG_CHECKING(whether /dev/stdin stdout stderr are available)
1549 AC_CACHE_VAL(bash_cv_dev_stdin,
1550 [if test -d /dev/fd && test -r /dev/stdin; then
1551    bash_cv_dev_stdin=present
1552  elif test -d /proc/self/fd && test -r /dev/stdin; then
1553    bash_cv_dev_stdin=present
1554  else
1555    bash_cv_dev_stdin=absent
1556  fi
1557 ])
1558 AC_MSG_RESULT($bash_cv_dev_stdin)
1559 if test $bash_cv_dev_stdin = "present"; then
1560   AC_DEFINE(HAVE_DEV_STDIN)
1561 fi
1562 ])
1563
1564 dnl
1565 dnl Check if HPUX needs _KERNEL defined for RLIMIT_* definitions
1566 dnl
1567 AC_DEFUN(BASH_CHECK_KERNEL_RLIMIT,
1568 [AC_MSG_CHECKING([whether $host_os needs _KERNEL for RLIMIT defines])
1569 AC_CACHE_VAL(bash_cv_kernel_rlimit,
1570 [AC_TRY_COMPILE([
1571 #include <sys/types.h>
1572 #include <sys/resource.h>
1573 ],
1574 [
1575   int f;
1576   f = RLIMIT_DATA;
1577 ], bash_cv_kernel_rlimit=no,
1578 [AC_TRY_COMPILE([
1579 #include <sys/types.h>
1580 #define _KERNEL
1581 #include <sys/resource.h>
1582 #undef _KERNEL
1583 ],
1584 [
1585         int f;
1586         f = RLIMIT_DATA;
1587 ], bash_cv_kernel_rlimit=yes, bash_cv_kernel_rlimit=no)]
1588 )])
1589 AC_MSG_RESULT($bash_cv_kernel_rlimit)
1590 if test $bash_cv_kernel_rlimit = yes; then
1591 AC_DEFINE(RLIMIT_NEEDS_KERNEL)
1592 fi
1593 ])
1594
1595 dnl
1596 dnl Check for 64-bit off_t -- used for malloc alignment
1597 dnl
1598 dnl C does not allow duplicate case labels, so the compile will fail if
1599 dnl sizeof(off_t) is > 4.
1600 dnl
1601 AC_DEFUN(BASH_CHECK_OFF_T_64,
1602 [AC_CACHE_CHECK(for 64-bit off_t, bash_cv_off_t_64,
1603 AC_TRY_COMPILE([
1604 #ifdef HAVE_UNISTD_H
1605 #include <unistd.h>
1606 #endif
1607 #include <sys/types.h>
1608 ],[
1609 switch (0) case 0: case (sizeof (off_t) <= 4):;
1610 ], bash_cv_off_t_64=no, bash_cv_off_t_64=yes))
1611 if test $bash_cv_off_t_64 = yes; then
1612         AC_DEFINE(HAVE_OFF_T_64)
1613 fi])
1614
1615 AC_DEFUN(BASH_CHECK_RTSIGS,
1616 [AC_MSG_CHECKING(for unusable real-time signals due to large values)
1617 AC_CACHE_VAL(bash_cv_unusable_rtsigs,
1618 [AC_TRY_RUN([
1619 #include <sys/types.h>
1620 #include <signal.h>
1621
1622 #ifndef NSIG
1623 #  define NSIG 64
1624 #endif
1625
1626 main ()
1627 {
1628   int n_sigs = 2 * NSIG;
1629 #ifdef SIGRTMIN
1630   int rtmin = SIGRTMIN;
1631 #else
1632   int rtmin = 0;
1633 #endif
1634
1635   exit(rtmin < n_sigs);
1636 }], bash_cv_unusable_rtsigs=yes, bash_cv_unusable_rtsigs=no,
1637     [AC_MSG_WARN(cannot check real-time signals if cross compiling -- defaulting to yes)
1638      bash_cv_unusable_rtsigs=yes]
1639 )])
1640 AC_MSG_RESULT($bash_cv_unusable_rtsigs)
1641 if test $bash_cv_unusable_rtsigs = yes; then
1642 AC_DEFINE(UNUSABLE_RT_SIGNALS)
1643 fi
1644 ])
1645
1646 dnl
1647 dnl check for availability of multibyte characters and functions
1648 dnl
1649 AC_DEFUN(BASH_CHECK_MULTIBYTE,
1650 [
1651 AC_CHECK_HEADERS(wctype.h)
1652 AC_CHECK_HEADERS(wchar.h)
1653 AC_CHECK_HEADERS(langinfo.h)
1654
1655 AC_CHECK_FUNC(mbrtowc, AC_DEFINE(HAVE_MBRTOWC))
1656 AC_CHECK_FUNC(mbsrtowcs, AC_DEFINE(HAVE_MBSRTOWCS))
1657 AC_CHECK_FUNC(wcwidth, AC_DEFINE(HAVE_WCWIDTH))
1658 if test "$ac_cv_func_wcwidth" = no && test "$ac_cv_header_wchar_h" = yes; then
1659   WCWIDTH_OBJ=wcwidth.o
1660 else
1661   WCWIDTH_OBJ=
1662 fi
1663 AC_SUBST(WCWIDTH_OBJ)
1664
1665 AC_CACHE_CHECK([for mbstate_t], bash_cv_have_mbstate_t,
1666 [AC_TRY_LINK(
1667 [#include <wchar.h>],
1668 [int
1669 main ()
1670 {
1671   mbstate_t ps;
1672   return 0;
1673 }], bash_cv_have_mbstate_t=yes,  bash_cv_have_mbstate_t=no)])
1674 if test $bash_cv_have_mbstate_t = yes; then
1675         AC_DEFINE(HAVE_MBSTATE_T)
1676 fi
1677
1678 AC_CACHE_CHECK([for nl_langinfo and CODESET], bash_cv_langinfo_codeset,
1679 [AC_TRY_LINK(
1680 [#include <langinfo.h>],
1681 [char* cs = nl_langinfo(CODESET);],
1682 bash_cv_langinfo_codeset=yes, bash_cv_langinfo_codeset=no)])
1683 if test $bash_cv_langinfo_codeset = yes; then
1684   AC_DEFINE(HAVE_LANGINFO_CODESET)
1685 fi
1686
1687 ])
1688
1689 dnl need: prefix exec_prefix libdir includedir CC TERMCAP_LIB
1690 dnl require:
1691 dnl     AC_PROG_CC
1692 dnl     BASH_CHECK_LIB_TERMCAP
1693
1694 AC_DEFUN(RL_LIB_READLINE_VERSION,
1695 [
1696 AC_REQUIRE([BASH_CHECK_LIB_TERMCAP])
1697
1698 AC_MSG_CHECKING([version of installed readline library])
1699
1700 # What a pain in the ass this is.
1701
1702 # save cpp and ld options
1703 _save_CFLAGS="$CFLAGS"
1704 _save_LDFLAGS="$LDFLAGS"
1705 _save_LIBS="$LIBS"
1706
1707 # Don't set ac_cv_rl_prefix if the caller has already assigned a value.  This
1708 # allows the caller to do something like $_rl_prefix=$withval if the user
1709 # specifies --with-installed-readline=PREFIX as an argument to configure
1710
1711 if test -z "$ac_cv_rl_prefix"; then
1712 test "x$prefix" = xNONE && ac_cv_rl_prefix=$ac_default_prefix || ac_cv_rl_prefix=${prefix}
1713 fi
1714
1715 eval ac_cv_rl_includedir=${ac_cv_rl_prefix}/include
1716 eval ac_cv_rl_libdir=${ac_cv_rl_prefix}/lib
1717
1718 LIBS="$LIBS -lreadline ${TERMCAP_LIB}"
1719 CFLAGS="$CFLAGS -I${ac_cv_rl_includedir}"
1720 LDFLAGS="$LDFLAGS -L${ac_cv_rl_libdir}"
1721
1722 AC_TRY_RUN([
1723 #include <stdio.h>
1724 #include <readline/readline.h>
1725
1726 main()
1727 {
1728         FILE *fp;
1729         fp = fopen("conftest.rlv", "w");
1730         if (fp == 0) exit(1);
1731         fprintf(fp, "%s\n", rl_library_version ? rl_library_version : "0.0");
1732         fclose(fp);
1733         exit(0);
1734 }
1735 ],
1736 ac_cv_rl_version=`cat conftest.rlv`,
1737 ac_cv_rl_version='0.0',
1738 ac_cv_rl_version='4.2')
1739
1740 CFLAGS="$_save_CFLAGS"
1741 LDFLAGS="$_save_LDFLAGS"
1742 LIBS="$_save_LIBS"
1743
1744 RL_MAJOR=0
1745 RL_MINOR=0
1746
1747 # (
1748 case "$ac_cv_rl_version" in
1749 2*|3*|4*|5*|6*|7*|8*|9*)
1750         RL_MAJOR=`echo $ac_cv_rl_version | sed 's:\..*$::'`
1751         RL_MINOR=`echo $ac_cv_rl_version | sed -e 's:^.*\.::' -e 's:[[a-zA-Z]]*$::'`
1752         ;;
1753 esac
1754
1755 # (((
1756 case $RL_MAJOR in
1757 [[0-9][0-9]])   _RL_MAJOR=$RL_MAJOR ;;
1758 [[0-9]])        _RL_MAJOR=0$RL_MAJOR ;;
1759 *)              _RL_MAJOR=00 ;;
1760 esac
1761
1762 # (((
1763 case $RL_MINOR in
1764 [[0-9][0-9]])   _RL_MINOR=$RL_MINOR ;;
1765 [[0-9]])        _RL_MINOR=0$RL_MINOR ;;
1766 *)              _RL_MINOR=00 ;;
1767 esac
1768
1769 RL_VERSION="0x${_RL_MAJOR}${_RL_MINOR}"
1770
1771 # Readline versions greater than 4.2 have these defines in readline.h
1772
1773 if test $ac_cv_rl_version = '0.0' ; then
1774         AC_MSG_WARN([Could not test version of installed readline library.])
1775 elif test $RL_MAJOR -gt 4 || { test $RL_MAJOR = 4 && test $RL_MINOR -gt 2 ; } ; then
1776         # set these for use by the caller
1777         RL_PREFIX=$ac_cv_rl_prefix
1778         RL_LIBDIR=$ac_cv_rl_libdir
1779         RL_INCLUDEDIR=$ac_cv_rl_includedir
1780         AC_MSG_RESULT($ac_cv_rl_version)
1781 else
1782
1783 AC_DEFINE_UNQUOTED(RL_READLINE_VERSION, $RL_VERSION, [encoded version of the installed readline library])
1784 AC_DEFINE_UNQUOTED(RL_VERSION_MAJOR, $RL_MAJOR, [major version of installed readline library])
1785 AC_DEFINE_UNQUOTED(RL_VERSION_MINOR, $RL_MINOR, [minor version of installed readline library])
1786
1787 AC_SUBST(RL_VERSION)
1788 AC_SUBST(RL_MAJOR)
1789 AC_SUBST(RL_MINOR)
1790
1791 # set these for use by the caller
1792 RL_PREFIX=$ac_cv_rl_prefix
1793 RL_LIBDIR=$ac_cv_rl_libdir
1794 RL_INCLUDEDIR=$ac_cv_rl_includedir
1795
1796 AC_MSG_RESULT($ac_cv_rl_version)
1797
1798 fi
1799 ])