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Line No. Rev Author Line
1 106 markom 
dnl
2 
dnl Bash specific tests
3 
dnl
4 
dnl Some derived from PDKSH 5.1.3 autoconf tests
5 
dnl
6 
dnl
7 
dnl Check if dup2() does not clear the close on exec flag
8 
dnl
9 
AC_DEFUN(BASH_DUP2_CLOEXEC_CHECK,
10 
[AC_MSG_CHECKING(if dup2 fails to clear the close-on-exec flag)
11 
AC_CACHE_VAL(bash_cv_dup2_broken,
12 
[AC_TRY_RUN([
13 
#include <sys/types.h>
14 
#include <fcntl.h>
15 
main()
16 
{
17 
  int fd1, fd2, fl;
18 
  fd1 = open("/dev/null", 2);
19 
  if (fcntl(fd1, 2, 1) < 0)
20 
    exit(1);
21 
  fd2 = dup2(fd1, 1);
22 
  if (fd2 < 0)
23 
    exit(2);
24 
  fl = fcntl(fd2, 1, 0);
25 
  /* fl will be 1 if dup2 did not reset the close-on-exec flag. */
26 
  exit(fl != 1);
27 
}
28 
], bash_cv_dup2_broken=yes, bash_cv_dup2_broken=no,
29 
    [AC_MSG_WARN(cannot check dup2 if cross compiling -- defaulting to no)
30 
     bash_cv_dup2_broken=no])
31 
])
32 
AC_MSG_RESULT($bash_cv_dup2_broken)
33 
if test $bash_cv_dup2_broken = yes; then
34 
AC_DEFINE(DUP2_BROKEN)
35 
fi
36 
])
37 
 
38 
dnl Check type of signal routines (posix, 4.2bsd, 4.1bsd or v7)
39 
AC_DEFUN(BASH_SIGNAL_CHECK,
40 
[AC_REQUIRE([AC_TYPE_SIGNAL])
41 
AC_MSG_CHECKING(for type of signal functions)
42 
AC_CACHE_VAL(bash_cv_signal_vintage,
43 
[
44 
  AC_TRY_LINK([#include <signal.h>],[
45 
    sigset_t ss;
46 
    struct sigaction sa;
47 
    sigemptyset(&ss); sigsuspend(&ss);
48 
    sigaction(SIGINT, &sa, (struct sigaction *) 0);
49 
    sigprocmask(SIG_BLOCK, &ss, (sigset_t *) 0);
50 
  ], bash_cv_signal_vintage=posix,
51 
  [
52 
    AC_TRY_LINK([#include <signal.h>], [
53 
        int mask = sigmask(SIGINT);
54 
        sigsetmask(mask); sigblock(mask); sigpause(mask);
55 
    ], bash_cv_signal_vintage=4.2bsd,
56 
    [
57 
      AC_TRY_LINK([
58 
        #include <signal.h>
59 
        RETSIGTYPE foo() { }], [
60 
                int mask = sigmask(SIGINT);
61 
                sigset(SIGINT, foo); sigrelse(SIGINT);
62 
                sighold(SIGINT); sigpause(SIGINT);
63 
        ], bash_cv_signal_vintage=svr3, bash_cv_signal_vintage=v7
64 
    )]
65 
  )]
66 
)
67 
])
68 
AC_MSG_RESULT($bash_cv_signal_vintage)
69 
if test "$bash_cv_signal_vintage" = posix; then
70 
AC_DEFINE(HAVE_POSIX_SIGNALS)
71 
elif test "$bash_cv_signal_vintage" = "4.2bsd"; then
72 
AC_DEFINE(HAVE_BSD_SIGNALS)
73 
elif test "$bash_cv_signal_vintage" = svr3; then
74 
AC_DEFINE(HAVE_USG_SIGHOLD)
75 
fi
76 
])
77 
 
78 
dnl Check if the pgrp of setpgrp() can't be the pid of a zombie process.
79 
AC_DEFUN(BASH_PGRP_SYNC,
80 
[AC_REQUIRE([AC_FUNC_GETPGRP])
81 
AC_MSG_CHECKING(whether pgrps need synchronization)
82 
AC_CACHE_VAL(bash_cv_pgrp_pipe,
83 
[AC_TRY_RUN([
84 
#ifdef HAVE_UNISTD_H
85 
#  include <unistd.h>
86 
#endif
87 
main()
88 
{
89 
# ifdef GETPGRP_VOID
90 
#  define getpgID()     getpgrp()
91 
# else
92 
#  define getpgID()     getpgrp(0)
93 
#  define setpgid(x,y)  setpgrp(x,y)
94 
# endif
95 
        int pid1, pid2, fds[2];
96 
        int status;
97 
        char ok;
98 
 
99 
        switch (pid1 = fork()) {
100 
          case -1:
101 
            exit(1);
102 
          case 0:
103 
            setpgid(0, getpid());
104 
            exit(0);
105 
        }
106 
        setpgid(pid1, pid1);
107 
 
108 
        sleep(2);       /* let first child die */
109 
 
110 
        if (pipe(fds) < 0)
111 
          exit(2);
112 
 
113 
        switch (pid2 = fork()) {
114 
          case -1:
115 
            exit(3);
116 
          case 0:
117 
            setpgid(0, pid1);
118 
            ok = getpgID() == pid1;
119 
            write(fds[1], &ok, 1);
120 
            exit(0);
121 
        }
122 
        setpgid(pid2, pid1);
123 
 
124 
        close(fds[1]);
125 
        if (read(fds[0], &ok, 1) != 1)
126 
          exit(4);
127 
        wait(&status);
128 
        wait(&status);
129 
        exit(ok ? 0 : 5);
130 
}
131 
], bash_cv_pgrp_pipe=no,bash_cv_pgrp_pipe=yes,
132 
   [AC_MSG_WARN(cannot check pgrp synchronization if cross compiling -- defaulting to no)
133 
    bash_cv_pgrp_pipe=no])
134 
])
135 
AC_MSG_RESULT($bash_cv_pgrp_pipe)
136 
if test $bash_cv_pgrp_pipe = yes; then
137 
AC_DEFINE(PGRP_PIPE)
138 
fi
139 
])
140 
 
141 
dnl
142 
dnl check for typedef'd symbols in header files, but allow the caller to
143 
dnl specify the include files to be checked in addition to the default
144 
dnl
145 
dnl BASH_CHECK_TYPE(TYPE, HEADERS, DEFAULT[, VALUE-IF-FOUND])
146 
AC_DEFUN(BASH_CHECK_TYPE,
147 
[AC_REQUIRE([AC_HEADER_STDC])dnl
148 
AC_MSG_CHECKING(for $1)
149 
AC_CACHE_VAL(bash_cv_type_$1,
150 
[AC_EGREP_CPP($1, [#include <sys/types.h>
151 
#if STDC_HEADERS
152 
#include <stdlib.h>
153 
#endif
154 
$2
155 
], bash_cv_type_$1=yes, bash_cv_type_$1=no)])
156 
AC_MSG_RESULT($bash_cv_type_$1)
157 
ifelse($#, 4, [if test $bash_cv_type_$1 = yes; then
158 
        AC_DEFINE($4)
159 
        fi])
160 
if test $bash_cv_type_$1 = no; then
161 
  AC_DEFINE($1, $3)
162 
fi
163 
])
164 
 
165 
dnl
166 
dnl Type of struct rlimit fields: some systems (OSF/1, NetBSD, RISC/os 5.0)
167 
dnl have a rlim_t, others (4.4BSD based systems) use quad_t, others use
168 
dnl long and still others use int (HP-UX 9.01, SunOS 4.1.3).  To simplify
169 
dnl matters, this just checks for rlim_t, quad_t, or long.
170 
dnl
171 
AC_DEFUN(BASH_RLIMIT_TYPE,
172 
[AC_MSG_CHECKING(for size and type of struct rlimit fields)
173 
AC_CACHE_VAL(bash_cv_type_rlimit,
174 
[AC_TRY_COMPILE([#include <sys/types.h>
175 
#include <sys/resource.h>],
176 
[rlim_t xxx;], bash_cv_type_rlimit=rlim_t,[
177 
AC_TRY_RUN([
178 
#include <sys/types.h>
179 
#include <sys/time.h>
180 
#include <sys/resource.h>
181 
main()
182 
{
183 
#ifdef HAVE_QUAD_T
184 
  struct rlimit rl;
185 
  if (sizeof(rl.rlim_cur) == sizeof(quad_t))
186 
    exit(0);
187 
#endif
188 
  exit(1);
189 
}], bash_cv_type_rlimit=quad_t, bash_cv_type_rlimit=long,
190 
        [AC_MSG_WARN(cannot check quad_t if cross compiling -- defaulting to long)
191 
         bash_cv_type_rlimit=long])])
192 
])
193 
AC_MSG_RESULT($bash_cv_type_rlimit)
194 
if test $bash_cv_type_rlimit = quad_t; then
195 
AC_DEFINE(RLIMTYPE, quad_t)
196 
elif test $bash_cv_type_rlimit = rlim_t; then
197 
AC_DEFINE(RLIMTYPE, rlim_t)
198 
fi
199 
])
200 
 
201 
dnl
202 
dnl Check for sys_siglist[] or _sys_siglist[]
203 
dnl
204 
AC_DEFUN(BASH_DECL_UNDER_SYS_SIGLIST,
205 
[AC_MSG_CHECKING([for _sys_siglist in signal.h or unistd.h])
206 
AC_CACHE_VAL(bash_cv_decl_under_sys_siglist,
207 
[AC_TRY_COMPILE([
208 
#include <sys/types.h>
209 
#include <signal.h>
210 
#ifdef HAVE_UNISTD_H
211 
#include <unistd.h>
212 
#endif], [ char *msg = _sys_siglist[2]; ],
213 
  bash_cv_decl_under_sys_siglist=yes, bash_cv_decl_under_sys_siglist=no,
214 
  [AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)])])dnl
215 
AC_MSG_RESULT($bash_cv_decl_under_sys_siglist)
216 
if test $bash_cv_decl_under_sys_siglist = yes; then
217 
AC_DEFINE(UNDER_SYS_SIGLIST_DECLARED)
218 
fi
219 
])
220 
 
221 
AC_DEFUN(BASH_UNDER_SYS_SIGLIST,
222 
[AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST])
223 
AC_MSG_CHECKING([for _sys_siglist in system C library])
224 
AC_CACHE_VAL(bash_cv_under_sys_siglist,
225 
[AC_TRY_RUN([
226 
#include <sys/types.h>
227 
#include <signal.h>
228 
#ifdef HAVE_UNISTD_H
229 
#include <unistd.h>
230 
#endif
231 
#ifndef UNDER_SYS_SIGLIST_DECLARED
232 
extern char *_sys_siglist[];
233 
#endif
234 
main()
235 
{
236 
char *msg = (char *)_sys_siglist[2];
237 
exit(msg == 0);
238 
}],
239 
        bash_cv_under_sys_siglist=yes, bash_cv_under_sys_siglist=no,
240 
        [AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)
241 
         bash_cv_under_sys_siglist=no])])
242 
AC_MSG_RESULT($bash_cv_under_sys_siglist)
243 
if test $bash_cv_under_sys_siglist = yes; then
244 
AC_DEFINE(HAVE_UNDER_SYS_SIGLIST)
245 
fi
246 
])
247 
 
248 
AC_DEFUN(BASH_SYS_SIGLIST,
249 
[AC_REQUIRE([AC_DECL_SYS_SIGLIST])
250 
AC_MSG_CHECKING([for sys_siglist in system C library])
251 
AC_CACHE_VAL(bash_cv_sys_siglist,
252 
[AC_TRY_RUN([
253 
#include <sys/types.h>
254 
#include <signal.h>
255 
#ifdef HAVE_UNISTD_H
256 
#include <unistd.h>
257 
#endif
258 
#ifndef SYS_SIGLIST_DECLARED
259 
extern char *sys_siglist[];
260 
#endif
261 
main()
262 
{
263 
char *msg = sys_siglist[2];
264 
exit(msg == 0);
265 
}],
266 
        bash_cv_sys_siglist=yes, bash_cv_sys_siglist=no,
267 
        [AC_MSG_WARN(cannot check for sys_siglist if cross compiling -- defaulting to no)
268 
         bash_cv_sys_siglist=no])])
269 
AC_MSG_RESULT($bash_cv_sys_siglist)
270 
if test $bash_cv_sys_siglist = yes; then
271 
AC_DEFINE(HAVE_SYS_SIGLIST)
272 
fi
273 
])
274 
 
275 
dnl Check for sys_errlist[] and sys_nerr, check for declaration
276 
AC_DEFUN(BASH_SYS_ERRLIST,
277 
[AC_MSG_CHECKING([for sys_errlist and sys_nerr])
278 
AC_CACHE_VAL(bash_cv_sys_errlist,
279 
[AC_TRY_LINK([#include <errno.h>],
280 
[extern char *sys_errlist[];
281 
 extern int sys_nerr;
282 
 char *msg = sys_errlist[sys_nerr - 1];],
283 
    bash_cv_sys_errlist=yes, bash_cv_sys_errlist=no)])dnl
284 
AC_MSG_RESULT($bash_cv_sys_errlist)
285 
if test $bash_cv_sys_errlist = yes; then
286 
AC_DEFINE(HAVE_SYS_ERRLIST)
287 
fi
288 
])
289 
 
290 
dnl Check to see if opendir will open non-directories (not a nice thing)
291 
AC_DEFUN(BASH_FUNC_OPENDIR_CHECK,
292 
[AC_REQUIRE([AC_HEADER_DIRENT])dnl
293 
AC_MSG_CHECKING(if opendir() opens non-directories)
294 
AC_CACHE_VAL(bash_cv_opendir_not_robust,
295 
[AC_TRY_RUN([
296 
#include <stdio.h>
297 
#include <sys/types.h>
298 
#include <fcntl.h>
299 
#ifdef HAVE_UNISTD_H
300 
# include <unistd.h>
301 
#endif /* HAVE_UNISTD_H */
302 
#if defined(HAVE_DIRENT_H)
303 
# include <dirent.h>
304 
#else
305 
# define dirent direct
306 
# ifdef HAVE_SYS_NDIR_H
307 
#  include <sys/ndir.h>
308 
# endif /* SYSNDIR */
309 
# ifdef HAVE_SYS_DIR_H
310 
#  include <sys/dir.h>
311 
# endif /* SYSDIR */
312 
# ifdef HAVE_NDIR_H
313 
#  include <ndir.h>
314 
# endif
315 
#endif /* HAVE_DIRENT_H */
316 
main()
317 
{
318 
DIR *dir;
319 
int fd;
320 
unlink("/tmp/not_a_directory");
321 
fd = open("/tmp/not_a_directory", O_WRONLY|O_CREAT, 0666);
322 
write(fd, "\n", 1);
323 
close(fd);
324 
dir = opendir("/tmp/not_a_directory");
325 
unlink("/tmp/not_a_directory");
326 
exit (dir == 0);
327 
}], bash_cv_opendir_not_robust=yes,bash_cv_opendir_not_robust=no,
328 
    [AC_MSG_WARN(cannot check opendir if cross compiling -- defaulting to no)
329 
     bash_cv_opendir_not_robust=no]
330 
)])
331 
AC_MSG_RESULT($bash_cv_opendir_not_robust)
332 
if test $bash_cv_opendir_not_robust = yes; then
333 
AC_DEFINE(OPENDIR_NOT_ROBUST)
334 
fi
335 
])
336 
 
337 
dnl
338 
AC_DEFUN(BASH_TYPE_SIGHANDLER,
339 
[AC_MSG_CHECKING([whether signal handlers are of type void])
340 
AC_CACHE_VAL(bash_cv_void_sighandler,
341 
[AC_TRY_COMPILE([#include <sys/types.h>
342 
#include <signal.h>
343 
#ifdef signal
344 
#undef signal
345 
#endif
346 
#ifdef __cplusplus
347 
extern "C"
348 
#endif
349 
void (*signal ()) ();],
350 
[int i;], bash_cv_void_sighandler=yes, bash_cv_void_sighandler=no)])dnl
351 
AC_MSG_RESULT($bash_cv_void_sighandler)
352 
if test $bash_cv_void_sighandler = yes; then
353 
AC_DEFINE(VOID_SIGHANDLER)
354 
fi
355 
])
356 
 
357 
AC_DEFUN(BASH_TYPE_INT32_T,
358 
[
359 
if test "$ac_cv_sizeof_int" = 4; then
360 
  AC_CHECK_TYPE(int32_t, int)
361 
elif test "$ac_cv_sizeof_long" = 4; then
362 
  AC_CHECK_TYPE(int32_t, long)
363 
else
364 
  AC_CHECK_TYPE(int32_t, int)
365 
fi
366 
])
367 
 
368 
AC_DEFUN(BASH_TYPE_U_INT32_T,
369 
[
370 
if test "$ac_cv_sizeof_int" = 4; then
371 
  AC_CHECK_TYPE(u_int32_t, unsigned int)
372 
elif test "$ac_cv_sizeof_long" = 4; then
373 
  AC_CHECK_TYPE(u_int32_t, unsigned long)
374 
else
375 
  AC_CHECK_TYPE(u_int32_t, unsigned int)
376 
fi
377 
])
378 
 
379 
AC_DEFUN(BASH_TYPE_PTRDIFF_T,
380 
[
381 
if test "$ac_cv_sizeof_int" = "$ac_cv_sizeof_char_p"; then
382 
  AC_CHECK_TYPE(ptrdiff_t, int)
383 
elif test "$ac_cv_sizeof_long" = "$ac_cv_sizeof_char_p"; then
384 
  AC_CHECK_TYPE(ptrdiff_t, long)
385 
else
386 
  AC_CHECK_TYPE(ptrdiff_t, int)
387 
fi
388 
])
389 
 
390 
AC_DEFUN(BASH_TYPE_BITS64_T,
391 
[
392 
if test "$ac_sv_sizeof_char_p" = 8; then
393 
  AC_CHECK_TYPE(bits64_t, char *)
394 
elif test "$ac_cv_sizeof_double" = 8; then
395 
  AC_CHECK_TYPE(bits64_t, double)
396 
elif test "$ac_cv_sizeof_long" = 8; then
397 
  AC_CHECK_TYPE(bits64_t, long)
398 
else
399 
  AC_CHECK_TYPE(bits64_t, double)
400 
fi
401 
])
402 
 
403 
AC_DEFUN(BASH_FUNC_STRSIGNAL,
404 
[AC_MSG_CHECKING([for the existence of strsignal])
405 
AC_CACHE_VAL(bash_cv_have_strsignal,
406 
[AC_TRY_LINK([#include <sys/types.h>
407 
#include <signal.h>],
408 
[char *s = (char *)strsignal(2);],
409 
 bash_cv_have_strsignal=yes, bash_cv_have_strsignal=no)])
410 
AC_MSG_RESULT($bash_cv_have_strsignal)
411 
if test $bash_cv_have_strsignal = yes; then
412 
AC_DEFINE(HAVE_STRSIGNAL)
413 
fi
414 
])
415 
 
416 
AC_DEFUN(BASH_FUNC_LSTAT,
417 
[dnl Cannot use AC_CHECK_FUNCS(lstat) because Linux defines lstat() as an
418 
dnl inline function in <sys/stat.h>.
419 
AC_CACHE_CHECK([for lstat], bash_cv_func_lstat,
420 
[AC_TRY_LINK([
421 
#include <sys/types.h>
422 
#include <sys/stat.h>
423 
],[ lstat(".",(struct stat *)0); ],
424 
bash_cv_func_lstat=yes, bash_cv_func_lstat=no)])
425 
if test $bash_cv_func_lstat = yes; then
426 
  AC_DEFINE(HAVE_LSTAT)
427 
fi
428 
])
429 
 
430 
AC_DEFUN(BASH_STRUCT_TERMIOS_LDISC,
431 
[AC_MSG_CHECKING([for a c_line member of struct termios])
432 
AC_CACHE_VAL(bash_cv_termios_ldisc,
433 
[AC_TRY_COMPILE([#include <sys/types.h>
434 
#include <termios.h>],[struct termios t; int i; i = t.c_line;],
435 
  bash_cv_termios_ldisc=yes, bash_cv_termios_ldisc=no)])dnl
436 
AC_MSG_RESULT($bash_cv_termios_ldisc)
437 
if test $bash_cv_termios_ldisc = yes; then
438 
AC_DEFINE(TERMIOS_LDISC)
439 
fi
440 
])
441 
 
442 
AC_DEFUN(BASH_STRUCT_TERMIO_LDISC,
443 
[AC_MSG_CHECKING([for a c_line member of struct termio])
444 
AC_CACHE_VAL(bash_cv_termio_ldisc,
445 
[AC_TRY_COMPILE([#include <sys/types.h>
446 
#include <termio.h>],[struct termio t; int i; i = t.c_line;],
447 
  bash_cv_termio_ldisc=yes, bash_cv_termio_ldisc=no)])dnl
448 
AC_MSG_RESULT($bash_cv_termio_ldisc)
449 
if test $bash_cv_termio_ldisc = yes; then
450 
AC_DEFINE(TERMIO_LDISC)
451 
fi
452 
])
453 
 
454 
AC_DEFUN(BASH_FUNC_GETENV,
455 
[AC_MSG_CHECKING(to see if getenv can be redefined)
456 
AC_CACHE_VAL(bash_cv_getenv_redef,
457 
[AC_TRY_RUN([
458 
#ifdef HAVE_UNISTD_H
459 
#  include <unistd.h>
460 
#endif
461 
#ifndef __STDC__
462 
#  ifndef const
463 
#    define const
464 
#  endif
465 
#endif
466 
char *
467 
getenv (name)
468 
#if defined (__linux__) || defined (__bsdi__) || defined (convex)
469 
     const char *name;
470 
#else
471 
     char const *name;
472 
#endif /* !__linux__ && !__bsdi__ && !convex */
473 
{
474 
return "42";
475 
}
476 
main()
477 
{
478 
char *s;
479 
/* The next allows this program to run, but does not allow bash to link
480 
   when it redefines getenv.  I'm not really interested in figuring out
481 
   why not. */
482 
#if defined (NeXT)
483 
exit(1);
484 
#endif
485 
s = getenv("ABCDE");
486 
exit(s == 0);   /* force optimizer to leave getenv in */
487 
}
488 
], bash_cv_getenv_redef=yes, bash_cv_getenv_redef=no,
489 
   [AC_MSG_WARN(cannot check getenv redefinition if cross compiling -- defaulting to yes)
490 
    bash_cv_getenv_redef=yes]
491 
)])
492 
AC_MSG_RESULT($bash_cv_getenv_redef)
493 
if test $bash_cv_getenv_redef = yes; then
494 
AC_DEFINE(CAN_REDEFINE_GETENV)
495 
fi
496 
])
497 
 
498 
AC_DEFUN(BASH_FUNC_PRINTF,
499 
[AC_MSG_CHECKING(for declaration of printf in <stdio.h>)
500 
AC_CACHE_VAL(bash_cv_printf_declared,
501 
[AC_TRY_RUN([
502 
#include <stdio.h>
503 
#ifdef __STDC__
504 
typedef int (*_bashfunc)(const char *, ...);
505 
#else
506 
typedef int (*_bashfunc)();
507 
#endif
508 
main()
509 
{
510 
_bashfunc pf;
511 
pf = (_bashfunc) printf;
512 
exit(pf == 0);
513 
}
514 
], bash_cv_printf_declared=yes, bash_cv_printf_declared=no,
515 
   [AC_MSG_WARN(cannot check printf declaration if cross compiling -- defaulting to yes)
516 
    bash_cv_printf_declared=yes]
517 
)])
518 
AC_MSG_RESULT($bash_cv_printf_declared)
519 
if test $bash_cv_printf_declared = yes; then
520 
AC_DEFINE(PRINTF_DECLARED)
521 
fi
522 
])
523 
 
524 
AC_DEFUN(BASH_FUNC_ULIMIT_MAXFDS,
525 
[AC_MSG_CHECKING(whether ulimit can substitute for getdtablesize)
526 
AC_CACHE_VAL(bash_cv_ulimit_maxfds,
527 
[AC_TRY_RUN([
528 
main()
529 
{
530 
long maxfds = ulimit(4, 0L);
531 
exit (maxfds == -1L);
532 
}
533 
], bash_cv_ulimit_maxfds=yes, bash_cv_ulimit_maxfds=no,
534 
   [AC_MSG_WARN(cannot check ulimit if cross compiling -- defaulting to no)
535 
    bash_cv_ulimit_maxfds=no]
536 
)])
537 
AC_MSG_RESULT($bash_cv_ulimit_maxfds)
538 
if test $bash_cv_ulimit_maxfds = yes; then
539 
AC_DEFINE(ULIMIT_MAXFDS)
540 
fi
541 
])
542 
 
543 
AC_DEFUN(BASH_CHECK_LIB_TERMCAP,
544 
[
545 
if test "X$bash_cv_termcap_lib" = "X"; then
546 
_bash_needmsg=yes
547 
else
548 
AC_MSG_CHECKING(which library has the termcap functions)
549 
_bash_needmsg=
550 
fi
551 
AC_CACHE_VAL(bash_cv_termcap_lib,
552 
[AC_CHECK_LIB(termcap, tgetent, bash_cv_termcap_lib=libtermcap,
553 
    [AC_CHECK_LIB(curses, tgetent, bash_cv_termcap_lib=libcurses,
554 
        [AC_CHECK_LIB(ncurses, tgetent, bash_cv_termcap_lib=libncurses,
555 
            bash_cv_termcap_lib=gnutermcap)])])])
556 
if test "X$_bash_needmsg" = "Xyes"; then
557 
AC_MSG_CHECKING(which library has the termcap functions)
558 
fi
559 
AC_MSG_RESULT(using $bash_cv_termcap_lib)
560 
if test $bash_cv_termcap_lib = gnutermcap && test -z "$prefer_curses"; then
561 
LDFLAGS="$LDFLAGS -L./lib/termcap"
562 
TERMCAP_LIB="./lib/termcap/libtermcap.a"
563 
TERMCAP_DEP="./lib/termcap/libtermcap.a"
564 
elif test $bash_cv_termcap_lib = libtermcap && test -z "$prefer_curses"; then
565 
TERMCAP_LIB=-ltermcap
566 
TERMCAP_DEP=
567 
elif test $bash_cv_termcap_lib = libncurses; then
568 
TERMCAP_LIB=-lncurses
569 
TERMCAP_DEP=
570 
else
571 
TERMCAP_LIB=-lcurses
572 
TERMCAP_DEP=
573 
fi
574 
])
575 
 
576 
AC_DEFUN(BASH_FUNC_GETCWD,
577 
[AC_MSG_CHECKING([if getcwd() calls popen()])
578 
AC_CACHE_VAL(bash_cv_getcwd_calls_popen,
579 
[AC_TRY_RUN([
580 
#include <stdio.h>
581 
#ifdef HAVE_UNISTD_H
582 
#include <unistd.h>
583 
#endif
584 
 
585 
#ifndef __STDC__
586 
#ifndef const
587 
#define const
588 
#endif
589 
#endif
590 
 
591 
int popen_called;
592 
 
593 
FILE *
594 
popen(command, type)
595 
     const char *command;
596 
     const char *type;
597 
{
598 
        popen_called = 1;
599 
        return (FILE *)NULL;
600 
}
601 
 
602 
FILE *_popen(command, type)
603 
     const char *command;
604 
     const char *type;
605 
{
606 
  return (popen (command, type));
607 
}
608 
 
609 
int
610 
pclose(stream)
611 
FILE *stream;
612 
{
613 
        return 0;
614 
}
615 
 
616 
int
617 
_pclose(stream)
618 
FILE *stream;
619 
{
620 
        return 0;
621 
}
622 
 
623 
main()
624 
{
625 
        char    lbuf[32];
626 
        popen_called = 0;
627 
        getcwd(lbuf, 32);
628 
        exit (popen_called);
629 
}
630 
], bash_cv_getcwd_calls_popen=no, bash_cv_getcwd_calls_popen=yes,
631 
   [AC_MSG_WARN(cannot check whether getcwd calls popen if cross compiling -- defaulting to no)
632 
    bash_cv_getcwd_calls_popen=no]
633 
)])
634 
AC_MSG_RESULT($bash_cv_getcwd_calls_popen)
635 
if test $bash_cv_getcwd_calls_popen = yes; then
636 
AC_DEFINE(GETCWD_BROKEN)
637 
fi
638 
])
639 
 
640 
AC_DEFUN(BASH_STRUCT_DIRENT_D_INO,
641 
[AC_REQUIRE([AC_HEADER_DIRENT])
642 
AC_MSG_CHECKING(if struct dirent has a d_ino member)
643 
AC_CACHE_VAL(bash_cv_dirent_has_dino,
644 
[AC_TRY_COMPILE([
645 
#include <stdio.h>
646 
#include <sys/types.h>
647 
#ifdef HAVE_UNISTD_H
648 
# include <unistd.h>
649 
#endif /* HAVE_UNISTD_H */
650 
#if defined(HAVE_DIRENT_H)
651 
# include <dirent.h>
652 
#else
653 
# define dirent direct
654 
# ifdef HAVE_SYS_NDIR_H
655 
#  include <sys/ndir.h>
656 
# endif /* SYSNDIR */
657 
# ifdef HAVE_SYS_DIR_H
658 
#  include <sys/dir.h>
659 
# endif /* SYSDIR */
660 
# ifdef HAVE_NDIR_H
661 
#  include <ndir.h>
662 
# endif
663 
#endif /* HAVE_DIRENT_H */
664 
],[
665 
struct dirent d; int z; z = d.d_ino;
666 
], bash_cv_dirent_has_dino=yes, bash_cv_dirent_has_dino=no)])
667 
AC_MSG_RESULT($bash_cv_dirent_has_dino)
668 
if test $bash_cv_dirent_has_dino = yes; then
669 
AC_DEFINE(STRUCT_DIRENT_HAS_D_INO)
670 
fi
671 
])
672 
 
673 
AC_DEFUN(BASH_STRUCT_DIRENT_D_FILENO,
674 
[AC_REQUIRE([AC_HEADER_DIRENT])
675 
AC_MSG_CHECKING(if struct dirent has a d_fileno member)
676 
AC_CACHE_VAL(bash_cv_dirent_has_d_fileno,
677 
[AC_TRY_COMPILE([
678 
#include <stdio.h>
679 
#include <sys/types.h>
680 
#ifdef HAVE_UNISTD_H
681 
# include <unistd.h>
682 
#endif /* HAVE_UNISTD_H */
683 
#if defined(HAVE_DIRENT_H)
684 
# include <dirent.h>
685 
#else
686 
# define dirent direct
687 
# ifdef HAVE_SYS_NDIR_H
688 
#  include <sys/ndir.h>
689 
# endif /* SYSNDIR */
690 
# ifdef HAVE_SYS_DIR_H
691 
#  include <sys/dir.h>
692 
# endif /* SYSDIR */
693 
# ifdef HAVE_NDIR_H
694 
#  include <ndir.h>
695 
# endif
696 
#endif /* HAVE_DIRENT_H */
697 
],[
698 
struct dirent d; int z; z = d.d_fileno;
699 
], bash_cv_dirent_has_d_fileno=yes, bash_cv_dirent_has_d_fileno=no)])
700 
AC_MSG_RESULT($bash_cv_dirent_has_d_fileno)
701 
if test $bash_cv_dirent_has_d_fileno = yes; then
702 
AC_DEFINE(STRUCT_DIRENT_HAS_D_FILENO)
703 
fi
704 
])
705 
 
706 
AC_DEFUN(BASH_REINSTALL_SIGHANDLERS,
707 
[AC_REQUIRE([AC_TYPE_SIGNAL])
708 
AC_REQUIRE([BASH_SIGNAL_CHECK])
709 
AC_MSG_CHECKING([if signal handlers must be reinstalled when invoked])
710 
AC_CACHE_VAL(bash_cv_must_reinstall_sighandlers,
711 
[AC_TRY_RUN([
712 
#include <signal.h>
713 
#ifdef HAVE_UNISTD_H
714 
#include <unistd.h>
715 
#endif
716 
 
717 
typedef RETSIGTYPE sigfunc();
718 
 
719 
int nsigint;
720 
 
721 
#ifdef HAVE_POSIX_SIGNALS
722 
sigfunc *
723 
set_signal_handler(sig, handler)
724 
     int sig;
725 
     sigfunc *handler;
726 
{
727 
  struct sigaction act, oact;
728 
  act.sa_handler = handler;
729 
  act.sa_flags = 0;
730 
  sigemptyset (&act.sa_mask);
731 
  sigemptyset (&oact.sa_mask);
732 
  sigaction (sig, &act, &oact);
733 
  return (oact.sa_handler);
734 
}
735 
#else
736 
#define set_signal_handler(s, h) signal(s, h)
737 
#endif
738 
 
739 
RETSIGTYPE
740 
sigint(s)
741 
int s;
742 
{
743 
  nsigint++;
744 
}
745 
 
746 
main()
747 
{
748 
        nsigint = 0;
749 
        set_signal_handler(SIGINT, sigint);
750 
        kill((int)getpid(), SIGINT);
751 
        kill((int)getpid(), SIGINT);
752 
        exit(nsigint != 2);
753 
}
754 
], bash_cv_must_reinstall_sighandlers=no, bash_cv_must_reinstall_sighandlers=yes,
755 
   [AC_MSG_WARN(cannot check signal handling if cross compiling -- defaulting to no)
756 
    bash_cv_must_reinstall_sighandlers=no]
757 
)])
758 
AC_MSG_RESULT($bash_cv_must_reinstall_sighandlers)
759 
if test $bash_cv_must_reinstall_sighandlers = yes; then
760 
AC_DEFINE(MUST_REINSTALL_SIGHANDLERS)
761 
fi
762 
])
763 
 
764 
AC_DEFUN(BASH_FUNC_SBRK_DECLARED,
765 
[AC_MSG_CHECKING(for declaration of sbrk in <unistd.h>)
766 
AC_CACHE_VAL(bash_cv_sbrk_declared,
767 
[AC_EGREP_HEADER(sbrk, unistd.h,
768 
 bash_cv_sbrk_declared=yes, bash_cv_sbrk_declared=no)])
769 
AC_MSG_RESULT($bash_cv_sbrk_declared)
770 
if test $bash_cv_sbrk_declared = yes; then
771 
AC_DEFINE(SBRK_DECLARED)
772 
fi
773 
])
774 
 
775 
dnl check that some necessary job control definitions are present
776 
AC_DEFUN(BASH_JOB_CONTROL_MISSING,
777 
[AC_REQUIRE([BASH_SIGNAL_CHECK])
778 
AC_MSG_CHECKING(for presence of necessary job control definitions)
779 
AC_CACHE_VAL(bash_cv_job_control_missing,
780 
[AC_TRY_RUN([
781 
#include <sys/types.h>
782 
#ifdef HAVE_SYS_WAIT_H
783 
#include <sys/wait.h>
784 
#endif
785 
#ifdef HAVE_UNISTD_H
786 
#include <unistd.h>
787 
#endif
788 
#include <signal.h>
789 
 
790 
/* Add more tests in here as appropriate. */
791 
main()
792 
{
793 
/* signal type */
794 
#if !defined (HAVE_POSIX_SIGNALS) && !defined (HAVE_BSD_SIGNALS)
795 
exit(1);
796 
#endif
797 
 
798 
/* signals and tty control. */
799 
#if !defined (SIGTSTP) || !defined (SIGSTOP) || !defined (SIGCONT)
800 
exit (1);
801 
#endif
802 
 
803 
/* process control */
804 
#if !defined (WNOHANG) || !defined (WUNTRACED)
805 
exit(1);
806 
#endif
807 
 
808 
/* Posix systems have tcgetpgrp and waitpid. */
809 
#if defined (_POSIX_VERSION) && !defined (HAVE_TCGETPGRP)
810 
exit(1);
811 
#endif
812 
 
813 
#if defined (_POSIX_VERSION) && !defined (HAVE_WAITPID)
814 
exit(1);
815 
#endif
816 
 
817 
/* Other systems have TIOCSPGRP/TIOCGPRGP and wait3. */
818 
#if !defined (_POSIX_VERSION) && !defined (HAVE_WAIT3)
819 
exit(1);
820 
#endif
821 
 
822 
exit(0);
823 
}], bash_cv_job_control_missing=present, bash_cv_job_control_missing=missing,
824 
    [AC_MSG_WARN(cannot check job control if cross-compiling -- defaulting to missing)
825 
     bash_cv_job_control_missing=missing]
826 
)])
827 
AC_MSG_RESULT($bash_cv_job_control_missing)
828 
if test $bash_cv_job_control_missing = missing; then
829 
AC_DEFINE(JOB_CONTROL_MISSING)
830 
fi
831 
])
832 
 
833 
dnl check whether named pipes are present
834 
dnl this requires a previous check for mkfifo, but that is awkward to specify
835 
AC_DEFUN(BASH_SYS_NAMED_PIPES,
836 
[AC_MSG_CHECKING(for presence of named pipes)
837 
AC_CACHE_VAL(bash_cv_sys_named_pipes,
838 
[AC_TRY_RUN([
839 
#include <sys/types.h>
840 
#include <sys/stat.h>
841 
#ifdef HAVE_UNISTD_H
842 
#include <unistd.h>
843 
#endif
844 
 
845 
/* Add more tests in here as appropriate. */
846 
main()
847 
{
848 
int fd;
849 
 
850 
#if defined (HAVE_MKFIFO)
851 
exit (0);
852 
#endif
853 
 
854 
#if !defined (S_IFIFO) && (defined (_POSIX_VERSION) && !defined (S_ISFIFO))
855 
exit (1);
856 
#endif
857 
 
858 
#if defined (NeXT)
859 
exit (1);
860 
#endif
861 
 
862 
fd = mknod ("/tmp/sh-np-autoconf", 0666 | S_IFIFO, 0);
863 
if (fd == -1)
864 
  exit (1);
865 
close(fd);
866 
unlink ("/tmp/sh-np-autoconf");
867 
exit(0);
868 
}], bash_cv_sys_named_pipes=present, bash_cv_sys_named_pipes=missing,
869 
    [AC_MSG_WARN(cannot check for named pipes if cross-compiling -- defaulting to missing)
870 
     bash_cv_sys_named_pipes=missing]
871 
)])
872 
AC_MSG_RESULT($bash_cv_sys_named_pipes)
873 
if test $bash_cv_sys_named_pipes = missing; then
874 
AC_DEFINE(NAMED_PIPES_MISSING)
875 
fi
876 
])
877 
 
878 
AC_DEFUN(BASH_FUNC_POSIX_SETJMP,
879 
[AC_REQUIRE([BASH_SIGNAL_CHECK])
880 
AC_MSG_CHECKING(for presence of POSIX-style sigsetjmp/siglongjmp)
881 
AC_CACHE_VAL(bash_cv_func_sigsetjmp,
882 
[AC_TRY_RUN([
883 
#ifdef HAVE_UNISTD_H
884 
#include <unistd.h>
885 
#endif
886 
#include <sys/types.h>
887 
#include <signal.h>
888 
#include <setjmp.h>
889 
 
890 
main()
891 
{
892 
#if !defined (_POSIX_VERSION) || !defined (HAVE_POSIX_SIGNALS)
893 
exit (1);
894 
#else
895 
 
896 
int code;
897 
sigset_t set, oset;
898 
sigjmp_buf xx;
899 
 
900 
/* get the mask */
901 
sigemptyset(&set);
902 
sigemptyset(&oset);
903 
sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &set);
904 
sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset);
905 
 
906 
/* save it */
907 
code = sigsetjmp(xx, 1);
908 
if (code)
909 
  exit(0);      /* could get sigmask and compare to oset here. */
910 
 
911 
/* change it */
912 
sigaddset(&set, SIGINT);
913 
sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
914 
 
915 
/* and siglongjmp */
916 
siglongjmp(xx, 10);
917 
exit(1);
918 
#endif
919 
}], bash_cv_func_sigsetjmp=present, bash_cv_func_sigsetjmp=missing,
920 
    [AC_MSG_WARN(cannot check for sigsetjmp/siglongjmp if cross-compiling -- defaulting to missing)
921 
     bash_cv_func_sigsetjmp=missing]
922 
)])
923 
AC_MSG_RESULT($bash_cv_func_sigsetjmp)
924 
if test $bash_cv_func_sigsetjmp = present; then
925 
AC_DEFINE(HAVE_POSIX_SIGSETJMP)
926 
fi
927 
])
928 
 
929 
AC_DEFUN(BASH_HAVE_TIOCGWINSZ,
930 
[AC_MSG_CHECKING(for TIOCGWINSZ in sys/ioctl.h)
931 
AC_CACHE_VAL(bash_cv_tiocgwinsz_in_ioctl,
932 
[AC_TRY_COMPILE([#include <sys/types.h>
933 
#include <sys/ioctl.h>], [int x = TIOCGWINSZ;],
934 
  bash_cv_tiocgwinsz_in_ioctl=yes,bash_cv_tiocgwinsz_in_ioctl=no)])
935 
AC_MSG_RESULT($bash_cv_tiocgwinsz_in_ioctl)
936 
if test $bash_cv_tiocgwinsz_in_ioctl = yes; then
937 
AC_DEFINE(GWINSZ_IN_SYS_IOCTL)
938 
fi
939 
])
940 
 
941 
AC_DEFUN(BASH_STRUCT_WINSIZE,
942 
[AC_MSG_CHECKING(for struct winsize in sys/ioctl.h and termios.h)
943 
AC_CACHE_VAL(bash_cv_struct_winsize_header,
944 
[AC_TRY_COMPILE([#include <sys/types.h>
945 
#include <sys/ioctl.h>], [struct winsize x;],
946 
  bash_cv_struct_winsize_header=ioctl_h,
947 
  [AC_TRY_COMPILE([#include <sys/types.h>
948 
#include <termios.h>], [struct winsize x;],
949 
  bash_cv_struct_winsize_header=termios_h, bash_cv_struct_winsize_header=other)
950 
])])
951 
if test $bash_cv_struct_winsize_header = ioctl_h; then
952 
  AC_MSG_RESULT(sys/ioctl.h)
953 
  AC_DEFINE(STRUCT_WINSIZE_IN_SYS_IOCTL)
954 
elif test $bash_cv_struct_winsize_header = termios_h; then
955 
  AC_MSG_RESULT(termios.h)
956 
  AC_DEFINE(STRUCT_WINSIZE_IN_TERMIOS)
957 
else
958 
  AC_MSG_RESULT(not found)
959 
fi
960 
])
961 
 
962 
AC_DEFUN(BASH_HAVE_TIOCSTAT,
963 
[AC_MSG_CHECKING(for TIOCSTAT in sys/ioctl.h)
964 
AC_CACHE_VAL(bash_cv_tiocstat_in_ioctl,
965 
[AC_TRY_COMPILE([#include <sys/types.h>
966 
#include <sys/ioctl.h>], [int x = TIOCSTAT;],
967 
  bash_cv_tiocstat_in_ioctl=yes,bash_cv_tiocstat_in_ioctl=no)])
968 
AC_MSG_RESULT($bash_cv_tiocstat_in_ioctl)
969 
if test $bash_cv_tiocstat_in_ioctl = yes; then
970 
AC_DEFINE(TIOCSTAT_IN_SYS_IOCTL)
971 
fi
972 
])
973 
 
974 
AC_DEFUN(BASH_HAVE_FIONREAD,
975 
[AC_MSG_CHECKING(for FIONREAD in sys/ioctl.h)
976 
AC_CACHE_VAL(bash_cv_fionread_in_ioctl,
977 
[AC_TRY_COMPILE([#include <sys/types.h>
978 
#include <sys/ioctl.h>], [int x = FIONREAD;],
979 
  bash_cv_fionread_in_ioctl=yes,bash_cv_fionread_in_ioctl=no)])
980 
AC_MSG_RESULT($bash_cv_fionread_in_ioctl)
981 
if test $bash_cv_fionread_in_ioctl = yes; then
982 
AC_DEFINE(FIONREAD_IN_SYS_IOCTL)
983 
fi
984 
])
985 
 
986 
dnl
987 
dnl See if speed_t is declared in <sys/types.h>.  Some versions of linux
988 
dnl require a definition of speed_t each time <termcap.h> is included,
989 
dnl but you can only get speed_t if you include <termios.h> (on some
990 
dnl versions) or <sys/types.h> (on others).
991 
dnl
992 
AC_DEFUN(BASH_MISC_SPEED_T,
993 
[AC_MSG_CHECKING(for speed_t in sys/types.h)
994 
AC_CACHE_VAL(bash_cv_speed_t_in_sys_types,
995 
[AC_TRY_COMPILE([#include <sys/types.h>], [speed_t x;],
996 
  bash_cv_speed_t_in_sys_types=yes,bash_cv_speed_t_in_sys_types=no)])
997 
AC_MSG_RESULT($bash_cv_speed_t_in_sys_types)
998 
if test $bash_cv_speed_t_in_sys_types = yes; then
999 
AC_DEFINE(SPEED_T_IN_SYS_TYPES)
1000 
fi
1001 
])
1002 
 
1003 
AC_DEFUN(BASH_CHECK_GETPW_FUNCS,
1004 
[AC_MSG_CHECKING(whether programs are able to redeclare getpw functions)
1005 
AC_CACHE_VAL(bash_cv_can_redecl_getpw,
1006 
[AC_TRY_COMPILE([#include <sys/types.h>
1007 
#include <pwd.h>
1008 
extern struct passwd *getpwent();
1009 
extern struct passwd *getpwuid();
1010 
extern struct passwd *getpwnam();],
1011 
[struct passwd *z; z = getpwent(); z = getpwuid(0); z = getpwnam("root");],
1012 
  bash_cv_can_redecl_getpw=yes,bash_cv_can_redecl_getpw=no)])
1013 
AC_MSG_RESULT($bash_cv_can_redecl_getpw)
1014 
if test $bash_cv_can_redecl_getpw = no; then
1015 
AC_DEFINE(HAVE_GETPW_DECLS)
1016 
fi
1017 
])
1018 
 
1019 
AC_DEFUN(BASH_CHECK_DEV_FD,
1020 
[AC_MSG_CHECKING(whether /dev/fd is available)
1021 
AC_CACHE_VAL(bash_cv_dev_fd,
1022 
[if test -d /dev/fd  && test -r /dev/fd/0; then
1023 
   bash_cv_dev_fd=standard
1024 
 elif test -d /proc/self/fd && test -r /proc/self/fd/0; then
1025 
   bash_cv_dev_fd=whacky
1026 
 else
1027 
   bash_cv_dev_fd=absent
1028 
 fi
1029 
])
1030 
AC_MSG_RESULT($bash_cv_dev_fd)
1031 
if test $bash_cv_dev_fd = "standard"; then
1032 
  AC_DEFINE(HAVE_DEV_FD)
1033 
  AC_DEFINE(DEV_FD_PREFIX, "/dev/fd/")
1034 
elif test $bash_cv_dev_fd = "whacky"; then
1035 
  AC_DEFINE(HAVE_DEV_FD)
1036 
  AC_DEFINE(DEV_FD_PREFIX, "/proc/self/fd/")
1037 
fi
1038 
])
1039 
 
1040 
dnl
1041 
dnl Check for the presence of getpeername (the only networking function
1042 
dnl bash currently requires) in libsocket.  If libsocket is present,
1043 
dnl check for libnsl and add it to LIBS if it's there, since most
1044 
dnl systems with libsocket require linking with libnsl as well.
1045 
dnl This should only be called if getpeername was not found in libc.
1046 
dnl
1047 
AC_DEFUN(BASH_CHECK_SOCKLIB,
1048 
[
1049 
if test "X$bash_cv_have_socklib" = "X"; then
1050 
_bash_needmsg=
1051 
else
1052 
AC_MSG_CHECKING(for socket library)
1053 
_bash_needmsg=yes
1054 
fi
1055 
AC_CACHE_VAL(bash_cv_have_socklib,
1056 
[AC_CHECK_LIB(socket, getpeername,
1057 
        bash_cv_have_socklib=yes, bash_cv_have_socklib=no, -lnsl)])
1058 
if test "X$_bash_needmsg" = Xyes; then
1059 
  AC_MSG_RESULT($bash_cv_have_socklib)
1060 
  _bash_needmsg=
1061 
fi
1062 
if test $bash_cv_have_socklib = yes; then
1063 
  # check for libnsl, add it to LIBS if present
1064 
  if test "X$bash_cv_have_libnsl" = "X"; then
1065 
    _bash_needmsg=
1066 
  else
1067 
    AC_MSG_CHECKING(for libnsl)
1068 
    _bash_needmsg=yes
1069 
  fi
1070 
  AC_CACHE_VAL(bash_cv_have_libnsl,
1071 
           [AC_CHECK_LIB(nsl, t_open,
1072 
                 bash_cv_have_libnsl=yes, bash_cv_have_libnsl=no)])
1073 
  if test "X$_bash_needmsg" = Xyes; then
1074 
    AC_MSG_RESULT($bash_cv_have_libnsl)
1075 
    _bash_needmsg=
1076 
  fi
1077 
  if test $bash_cv_have_libnsl = yes; then
1078 
    LIBS="-lsocket -lnsl $LIBS"
1079 
  else
1080 
    LIBS="-lsocket $LIBS"
1081 
  fi
1082 
  AC_DEFINE(HAVE_LIBSOCKET)
1083 
  AC_DEFINE(HAVE_GETPEERNAME)
1084 
fi
1085 
])
1086 
 
1087 
AC_DEFUN(BASH_DEFAULT_MAIL_DIR,
1088 
[AC_MSG_CHECKING(for default mail directory)
1089 
AC_CACHE_VAL(bash_cv_mail_dir,
1090 
[if test -d /var/mail; then
1091 
   bash_cv_mail_dir=/var/mail
1092 
 elif test -d /usr/mail; then
1093 
   bash_cv_mail_dir=/usr/mail
1094 
 elif test -d /var/spool/mail; then
1095 
   bash_cv_mail_dir=/var/spool/mail
1096 
 elif test -d /usr/spool/mail; then
1097 
   bash_cv_mail_dir=/usr/spool/mail
1098 
 else
1099 
   bash_cv_mail_dir=unknown
1100 
 fi
1101 
])
1102 
AC_MSG_RESULT($bash_cv_mail_dir)
1103 
if test $bash_cv_mail_dir = "/var/mail"; then
1104 
   AC_DEFINE(DEFAULT_MAIL_DIRECTORY, "/var/mail")
1105 
elif test $bash_cv_mail_dir = "/usr/mail"; then
1106 
   AC_DEFINE(DEFAULT_MAIL_DIRECTORY, "/usr/mail")
1107 
elif test $bash_cv_mail_dir = "/var/spool/mail"; then
1108 
   AC_DEFINE(DEFAULT_MAIL_DIRECTORY, "/var/spool/mail")
1109 
elif test $bash_cv_mail_dir = "/usr/spool/mail"; then
1110 
   AC_DEFINE(DEFAULT_MAIL_DIRECTORY, "/usr/spool/mail")
1111 
else
1112 
   AC_DEFINE(DEFAULT_MAIL_DIRECTORY, "unknown")
1113 
fi
1114 
])
1115 
 
1116 
dnl
1117 
dnl Check if HPUX needs _KERNEL defined for RLIMIT_* definitions
1118 
dnl
1119 
AC_DEFUN(BASH_KERNEL_RLIMIT_CHECK,
1120 
[AC_MSG_CHECKING([whether $host_os needs _KERNEL for RLIMIT defines])
1121 
AC_CACHE_VAL(bash_cv_kernel_rlimit,
1122 
[AC_TRY_COMPILE([
1123 
#include <sys/types.h>
1124 
#include <sys/resource.h>
1125 
],
1126 
[
1127 
  int f;
1128 
  f = RLIMIT_DATA;
1129 
], bash_cv_kernel_rlimit=no,
1130 
[AC_TRY_COMPILE([
1131 
#include <sys/types.h>
1132 
#define _KERNEL
1133 
#include <sys/resource.h>
1134 
#undef _KERNEL
1135 
],
1136 
[
1137 
        int f;
1138 
        f = RLIMIT_DATA;
1139 
], bash_cv_kernel_rlimit=yes, bash_cv_kernel_rlimit=no)]
1140 
)])
1141 
AC_MSG_RESULT($bash_cv_kernel_rlimit)
1142 
if test $bash_cv_kernel_rlimit = yes; then
1143 
AC_DEFINE(RLIMIT_NEEDS_KERNEL)
1144 
fi
1145 
])
1146 
 
1147 
AC_DEFUN(BASH_FUNC_STRCOLL,
1148 
[
1149 
AC_MSG_CHECKING(whether or not strcoll and strcmp differ)
1150 
AC_CACHE_VAL(bash_cv_func_strcoll_broken,
1151 
[AC_TRY_RUN([
1152 
#include <stdio.h>
1153 
#if defined (HAVE_LOCALE_H)
1154 
#include <locale.h>
1155 
#endif
1156 
 
1157 
main(c, v)
1158 
int     c;
1159 
char    *v[];
1160 
{
1161 
        int     r1, r2;
1162 
        char    *deflocale, *defcoll;
1163 
 
1164 
#ifdef HAVE_SETLOCALE
1165 
        deflocale = setlocale(LC_ALL, "");
1166 
        defcoll = setlocale(LC_COLLATE, "");
1167 
#endif
1168 
 
1169 
#ifdef HAVE_STRCOLL
1170 
        /* These two values are taken from tests/glob-test. */
1171 
        r1 = strcoll("abd", "aXd");
1172 
#else
1173 
        r1 = 0;
1174 
#endif
1175 
        r2 = strcmp("abd", "aXd");
1176 
 
1177 
        /* These two should both be greater than 0.  It is permissible for
1178 
           a system to return different values, as long as the sign is the
1179 
           same. */
1180 
 
1181 
        /* Exit with 1 (failure) if these two values are both > 0, since
1182 
           this tests whether strcoll(3) is broken with respect to strcmp(3)
1183 
           in the default locale. */
1184 
        exit (r1 > 0 && r2 > 0);
1185 
}
1186 
], bash_cv_func_strcoll_broken=yes, bash_cv_func_strcoll_broken=no,
1187 
   [AC_MSG_WARN(cannot check strcoll if cross compiling -- defaulting to no)
1188 
    bash_cv_func_strcoll_broken=no]
1189 
)])
1190 
AC_MSG_RESULT($bash_cv_func_strcoll_broken)
1191 
if test $bash_cv_func_strcoll_broken = yes; then
1192 
AC_DEFINE(STRCOLL_BROKEN)
1193 
fi
1194 
])
1195 
 
1196 
dnl
1197 
dnl If available, use support for large files unless the user specified
1198 
dnl one of the CPPFLAGS, LDFLAGS, or LIBS variables (<eggert@twinsun.com>
1199 
dnl via GNU patch 2.5)
1200 
dnl
1201 
AC_DEFUN(BASH_LARGE_FILE_SUPPORT,
1202 
[AC_MSG_CHECKING(whether large file support needs explicit enabling)
1203 
ac_getconfs=''
1204 
ac_result=yes
1205 
ac_set=''
1206 
ac_shellvars='CPPFLAGS LDFLAGS LIBS'
1207 
for ac_shellvar in $ac_shellvars; do
1208 
  case $ac_shellvar in
1209 
  CPPFLAGS) ac_lfsvar=LFS_CFLAGS ac_lfs64var=LFS64_CFLAGS ;;
1210 
  *) ac_lfsvar=LFS_$ac_shellvar ac_lfs64var=LFS64_$ac_shellvar ;;
1211 
  esac
1212 
  eval test '"${'$ac_shellvar'+set}"' = set && ac_set=$ac_shellvar
1213 
  (getconf $ac_lfsvar) >/dev/null 2>&1 || { ac_result=no; break; }
1214 
  ac_getconf=`getconf $ac_lfsvar`
1215 
  ac_getconf64=`getconf $ac_lfs64var`
1216 
  ac_getconfs=$ac_getconfs$ac_getconf\ $ac_getconf64
1217 
  eval ac_test_$ac_shellvar="\$ac_getconf\ \$ac_getconf64"
1218 
done
1219 
case "$ac_result$ac_getconfs" in
1220 
yes) ac_result=no ;;
1221 
esac
1222 
case "$ac_result$ac_set" in
1223 
yes?*) ac_result="yes, but $ac_set is already set, so use its settings"
1224 
esac
1225 
AC_MSG_RESULT($ac_result)
1226 
case $ac_result in
1227 
yes)
1228 
  for ac_shellvar in $ac_shellvars; do
1229 
    eval $ac_shellvar=\$ac_test_$ac_shellvar
1230 
  done ;;
1231 
esac
1232 
])
1233 
 
1234 
dnl
1235 
dnl AC_SYS_RESTARTABLE_SYSCALLS tests only for restarted system calls
1236 
dnl after a signal handler has been installed with signal().  Since
1237 
dnl Bash uses sigaction() if it is available, we need to check whether
1238 
dnl or not a signal handler installed with sigaction and SA_RESTART
1239 
dnl causes system calls to be restarted after the signal is caught
1240 
dnl
1241 
AC_DEFUN(BASH_SYS_RESTARTABLE_SYSCALLS,
1242 
[AC_REQUIRE([BASH_SIGNAL_CHECK])
1243 
AC_CACHE_CHECK(for restartable system calls with posix sigaction,
1244 
bash_cv_sys_restartable_syscalls,
1245 
[AC_TRY_RUN(
1246 
[/* Exit 0 (true) if wait returns something other than -1,
1247 
   i.e. the pid of the child, which means that wait was restarted
1248 
   after getting the signal.  */
1249 
#include <sys/types.h>
1250 
#include <signal.h>
1251 
static int caught = 0;
1252 
void ucatch (isig) int isig; { caught = 1; }
1253 
main ()
1254 
{
1255 
#if !defined (_POSIX_VERSION) || !defined (HAVE_POSIX_SIGNALS)
1256 
  exit (1);
1257 
#else
1258 
  struct sigaction act, oact;
1259 
  int i, status;
1260 
 
1261 
  act.sa_handler = ucatch;
1262 
  /* Might want to add SA_RESTART here, but bash's set_signal_handler
1263 
     does not. */
1264 
  act.sa_flags = 0;
1265 
  sigemptyset(&act.sa_mask);
1266 
  sigemptyset(&oact.sa_mask);
1267 
  i = fork ();
1268 
  /* A possible race condition here, but in practice it never happens. */
1269 
  if (i == 0) { sleep (3); kill (getppid (), SIGINT); sleep (3); exit (0); }
1270 
  sigaction(SIGINT, &act, &oact);
1271 
  status = wait(&i);
1272 
  if (status == -1) wait(&i);
1273 
  exit (status == -1);
1274 
#endif
1275 
}
1276 
], bash_cv_sys_restartable_syscalls=yes, bash_cv_sys_restartable_syscalls=no,
1277 
   AC_MSG_WARN(cannot check restartable syscalls if cross compiling))
1278 
])
1279 
if test $bash_cv_sys_restartable_syscalls = yes; then
1280 
  AC_DEFINE(HAVE_RESTARTABLE_SYSCALLS)
1281 
fi
1282 
])
1283 
dnl
1284 
dnl Check for 64-bit off_t -- used for malloc alignment
1285 
dnl
1286 
dnl C does not allow duplicate case labels, so the compile will fail if
1287 
dnl sizeof(off_t) is > 4.
1288 
dnl
1289 
AC_DEFUN(BASH_CHECK_OFF_T_64,
1290 
[AC_CACHE_CHECK(for 64-bit off_t, bash_cv_off_t_64,
1291 
AC_TRY_COMPILE([
1292 
#ifdef HAVE_UNISTD_H
1293 
#include <unistd.h>
1294 
#endif
1295 
#include <sys/types.h>
1296 
],[
1297 
switch (0) case 0: case (sizeof (off_t) <= 4):;
1298 
], bash_cv_off_t_64=no, bash_cv_off_t_64=yes))
1299 
if test $bash_cv_off_t_64 = yes; then
1300 
        AC_DEFINE(HAVE_OFF_T_64)
1301 
fi])

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