AC_DEFUN(BASH_DUP2_CLOEXEC_CHECK,
[AC_MSG_CHECKING(if dup2 fails to clear the close-on-exec flag)
AC_CACHE_VAL(bash_cv_dup2_broken,
[AC_TRY_RUN([
main()
{
int fd1, fd2, fl;
fd1 = open("/dev/null", 2);
if (fcntl(fd1, 2, 1) < 0)
exit(1);
fd2 = dup2(fd1, 1);
if (fd2 < 0)
exit(2);
fl = fcntl(fd2, 1, 0);
/* fl will be 1 if dup2 did not reset the close-on-exec flag. */
exit(fl != 1);
}
], bash_cv_dup2_broken=yes, bash_cv_dup2_broken=no,
[AC_MSG_WARN(cannot check dup2 if cross compiling -- defaulting to no)
bash_cv_dup2_broken=no])
])
AC_MSG_RESULT($bash_cv_dup2_broken)
if test $bash_cv_dup2_broken = yes; then
AC_DEFINE(DUP2_BROKEN)
fi
])
AC_DEFUN(BASH_SIGNAL_CHECK,
[AC_REQUIRE([AC_TYPE_SIGNAL])
AC_MSG_CHECKING(for type of signal functions)
AC_CACHE_VAL(bash_cv_signal_vintage,
[
AC_TRY_LINK([ sigset_t ss;
struct sigaction sa;
sigemptyset(&ss); sigsuspend(&ss);
sigaction(SIGINT, &sa, (struct sigaction *) 0);
sigprocmask(SIG_BLOCK, &ss, (sigset_t *) 0);
], bash_cv_signal_vintage=posix,
[
AC_TRY_LINK([ int mask = sigmask(SIGINT);
sigsetmask(mask); sigblock(mask); sigpause(mask);
], bash_cv_signal_vintage=4.2bsd,
[
AC_TRY_LINK([
RETSIGTYPE foo() { }], [
int mask = sigmask(SIGINT);
sigset(SIGINT, foo); sigrelse(SIGINT);
sighold(SIGINT); sigpause(SIGINT);
], bash_cv_signal_vintage=svr3, bash_cv_signal_vintage=v7
)]
)]
)
])
AC_MSG_RESULT($bash_cv_signal_vintage)
if test "$bash_cv_signal_vintage" = posix; then
AC_DEFINE(HAVE_POSIX_SIGNALS)
elif test "$bash_cv_signal_vintage" = "4.2bsd"; then
AC_DEFINE(HAVE_BSD_SIGNALS)
elif test "$bash_cv_signal_vintage" = svr3; then
AC_DEFINE(HAVE_USG_SIGHOLD)
fi
])
AC_DEFUN(BASH_PGRP_SYNC,
[AC_REQUIRE([AC_FUNC_GETPGRP])
AC_MSG_CHECKING(whether pgrps need synchronization)
AC_CACHE_VAL(bash_cv_pgrp_pipe,
[AC_TRY_RUN([
main()
{
int pid1, pid2, fds[2];
int status;
char ok;
switch (pid1 = fork()) {
case -1:
exit(1);
case 0:
setpgid(0, getpid());
exit(0);
}
setpgid(pid1, pid1);
sleep(2); /* let first child die */
if (pipe(fds) < 0)
exit(2);
switch (pid2 = fork()) {
case -1:
exit(3);
case 0:
setpgid(0, pid1);
ok = getpgID() == pid1;
write(fds[1], &ok, 1);
exit(0);
}
setpgid(pid2, pid1);
close(fds[1]);
if (read(fds[0], &ok, 1) != 1)
exit(4);
wait(&status);
wait(&status);
exit(ok ? 0 : 5);
}
], bash_cv_pgrp_pipe=no,bash_cv_pgrp_pipe=yes,
[AC_MSG_WARN(cannot check pgrp synchronization if cross compiling -- defaulting to no)
bash_cv_pgrp_pipe=no])
])
AC_MSG_RESULT($bash_cv_pgrp_pipe)
if test $bash_cv_pgrp_pipe = yes; then
AC_DEFINE(PGRP_PIPE)
fi
])
AC_DEFUN(BASH_CHECK_TYPE,
[AC_REQUIRE([AC_HEADER_STDC])AC_MSG_CHECKING(for $1)
AC_CACHE_VAL(bash_cv_type_$1,
[AC_EGREP_CPP($1, [$2
], bash_cv_type_$1=yes, bash_cv_type_$1=no)])
AC_MSG_RESULT($bash_cv_type_$1)
ifelse($ AC_DEFINE($4)
fi])
if test $bash_cv_type_$1 = no; then
AC_DEFINE($1, $3)
fi
])
AC_DEFUN(BASH_RLIMIT_TYPE,
[AC_MSG_CHECKING(for size and type of struct rlimit fields)
AC_CACHE_VAL(bash_cv_type_rlimit,
[AC_TRY_COMPILE([[rlim_t xxx;], bash_cv_type_rlimit=rlim_t,[
AC_TRY_RUN([
main()
{
struct rlimit rl;
if (sizeof(rl.rlim_cur) == sizeof(quad_t))
exit(0);
exit(1);
}], bash_cv_type_rlimit=quad_t, bash_cv_type_rlimit=long,
[AC_MSG_WARN(cannot check quad_t if cross compiling -- defaulting to long)
bash_cv_type_rlimit=long])])
])
AC_MSG_RESULT($bash_cv_type_rlimit)
if test $bash_cv_type_rlimit = quad_t; then
AC_DEFINE(RLIMTYPE, quad_t)
elif test $bash_cv_type_rlimit = rlim_t; then
AC_DEFINE(RLIMTYPE, rlim_t)
fi
])
AC_DEFUN(BASH_DECL_UNDER_SYS_SIGLIST,
[AC_MSG_CHECKING([for _sys_siglist in signal.h or unistd.h])
AC_CACHE_VAL(bash_cv_decl_under_sys_siglist,
[AC_TRY_COMPILE([
bash_cv_decl_under_sys_siglist=yes, bash_cv_decl_under_sys_siglist=no,
[AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)])])AC_MSG_RESULT($bash_cv_decl_under_sys_siglist)
if test $bash_cv_decl_under_sys_siglist = yes; then
AC_DEFINE(UNDER_SYS_SIGLIST_DECLARED)
fi
])
AC_DEFUN(BASH_UNDER_SYS_SIGLIST,
[AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST])
AC_MSG_CHECKING([for _sys_siglist in system C library])
AC_CACHE_VAL(bash_cv_under_sys_siglist,
[AC_TRY_RUN([
extern char *_sys_siglist[];
main()
{
char *msg = (char *)_sys_siglist[2];
exit(msg == 0);
}],
bash_cv_under_sys_siglist=yes, bash_cv_under_sys_siglist=no,
[AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)
bash_cv_under_sys_siglist=no])])
AC_MSG_RESULT($bash_cv_under_sys_siglist)
if test $bash_cv_under_sys_siglist = yes; then
AC_DEFINE(HAVE_UNDER_SYS_SIGLIST)
fi
])
AC_DEFUN(BASH_SYS_SIGLIST,
[AC_REQUIRE([AC_DECL_SYS_SIGLIST])
AC_MSG_CHECKING([for sys_siglist in system C library])
AC_CACHE_VAL(bash_cv_sys_siglist,
[AC_TRY_RUN([
extern char *sys_siglist[];
main()
{
char *msg = sys_siglist[2];
exit(msg == 0);
}],
bash_cv_sys_siglist=yes, bash_cv_sys_siglist=no,
[AC_MSG_WARN(cannot check for sys_siglist if cross compiling -- defaulting to no)
bash_cv_sys_siglist=no])])
AC_MSG_RESULT($bash_cv_sys_siglist)
if test $bash_cv_sys_siglist = yes; then
AC_DEFINE(HAVE_SYS_SIGLIST)
fi
])
AC_DEFUN(BASH_SYS_ERRLIST,
[AC_MSG_CHECKING([for sys_errlist and sys_nerr])
AC_CACHE_VAL(bash_cv_sys_errlist,
[AC_TRY_LINK([[extern char *sys_errlist[];
extern int sys_nerr;
char *msg = sys_errlist[sys_nerr - 1];],
bash_cv_sys_errlist=yes, bash_cv_sys_errlist=no)])AC_MSG_RESULT($bash_cv_sys_errlist)
if test $bash_cv_sys_errlist = yes; then
AC_DEFINE(HAVE_SYS_ERRLIST)
fi
])
AC_DEFUN(BASH_FUNC_OPENDIR_CHECK,
[AC_REQUIRE([AC_HEADER_DIRENT])AC_MSG_CHECKING(if opendir() opens non-directories)
AC_CACHE_VAL(bash_cv_opendir_not_robust,
[AC_TRY_RUN([
main()
{
DIR *dir;
int fd, err;
err = mkdir("/tmp/bash-aclocal", 0700);
if (err < 0) {
perror("mkdir");
exit(1);
}
unlink("/tmp/bash-aclocal/not_a_directory");
fd = open("/tmp/bash-aclocal/not_a_directory", O_WRONLY|O_CREAT|O_EXCL, 0666);
write(fd, "\n", 1);
close(fd);
dir = opendir("/tmp/bash-aclocal/not_a_directory");
unlink("/tmp/bash-aclocal/not_a_directory");
rmdir("/tmp/bash-aclocal");
exit (dir == 0);
}], bash_cv_opendir_not_robust=yes,bash_cv_opendir_not_robust=no,
[AC_MSG_WARN(cannot check opendir if cross compiling -- defaulting to no)
bash_cv_opendir_not_robust=no]
)])
AC_MSG_RESULT($bash_cv_opendir_not_robust)
if test $bash_cv_opendir_not_robust = yes; then
AC_DEFINE(OPENDIR_NOT_ROBUST)
fi
])
AC_DEFUN(BASH_TYPE_SIGHANDLER,
[AC_MSG_CHECKING([whether signal handlers are of type void])
AC_CACHE_VAL(bash_cv_void_sighandler,
[AC_TRY_COMPILE([extern "C"
void (*signal ()) ();],
[int i;], bash_cv_void_sighandler=yes, bash_cv_void_sighandler=no)])AC_MSG_RESULT($bash_cv_void_sighandler)
if test $bash_cv_void_sighandler = yes; then
AC_DEFINE(VOID_SIGHANDLER)
fi
])
AC_DEFUN(BASH_TYPE_BITS16_T,
[
if test "$ac_cv_sizeof_short" = 2; then
AC_CHECK_TYPE(bits16_t, short)
elif test "$ac_cv_sizeof_char" = 2; then
AC_CHECK_TYPE(bits16_t, char)
else
AC_CHECK_TYPE(bits16_t, short)
fi
])
AC_DEFUN(BASH_TYPE_U_BITS16_T,
[
if test "$ac_cv_sizeof_short" = 2; then
AC_CHECK_TYPE(u_bits16_t, unsigned short)
elif test "$ac_cv_sizeof_char" = 2; then
AC_CHECK_TYPE(u_bits16_t, unsigned char)
else
AC_CHECK_TYPE(u_bits16_t, unsigned short)
fi
])
AC_DEFUN(BASH_TYPE_BITS32_T,
[
if test "$ac_cv_sizeof_int" = 4; then
AC_CHECK_TYPE(bits32_t, int)
elif test "$ac_cv_sizeof_long" = 4; then
AC_CHECK_TYPE(bits32_t, long)
else
AC_CHECK_TYPE(bits32_t, int)
fi
])
AC_DEFUN(BASH_TYPE_U_BITS32_T,
[
if test "$ac_cv_sizeof_int" = 4; then
AC_CHECK_TYPE(u_bits32_t, unsigned int)
elif test "$ac_cv_sizeof_long" = 4; then
AC_CHECK_TYPE(u_bits32_t, unsigned long)
else
AC_CHECK_TYPE(u_bits32_t, unsigned int)
fi
])
AC_DEFUN(BASH_TYPE_PTRDIFF_T,
[
if test "$ac_cv_sizeof_int" = "$ac_cv_sizeof_char_p"; then
AC_CHECK_TYPE(ptrdiff_t, int)
elif test "$ac_cv_sizeof_long" = "$ac_cv_sizeof_char_p"; then
AC_CHECK_TYPE(ptrdiff_t, long)
else
AC_CHECK_TYPE(ptrdiff_t, int)
fi
])
AC_DEFUN(BASH_TYPE_BITS64_T,
[
if test "$ac_sv_sizeof_char_p" = 8; then
AC_CHECK_TYPE(bits64_t, char *)
elif test "$ac_cv_sizeof_double" = 8; then
AC_CHECK_TYPE(bits64_t, double)
elif test "$ac_cv_sizeof_long" = 8; then
AC_CHECK_TYPE(bits64_t, long)
else
AC_CHECK_TYPE(bits64_t, double)
fi
])
AC_DEFUN(BASH_FUNC_STRSIGNAL,
[AC_MSG_CHECKING([for the existence of strsignal])
AC_CACHE_VAL(bash_cv_have_strsignal,
[AC_TRY_LINK([[char *s = (char *)strsignal(2);],
bash_cv_have_strsignal=yes, bash_cv_have_strsignal=no)])
AC_MSG_RESULT($bash_cv_have_strsignal)
if test $bash_cv_have_strsignal = yes; then
AC_DEFINE(HAVE_STRSIGNAL)
fi
])
AC_DEFUN(BASH_FUNC_LSTAT,
[AC_CACHE_CHECK([for lstat], bash_cv_func_lstat,
[AC_TRY_LINK([
],[ lstat(".",(struct stat *)0); ],
bash_cv_func_lstat=yes, bash_cv_func_lstat=no)])
if test $bash_cv_func_lstat = yes; then
AC_DEFINE(HAVE_LSTAT)
fi
])
AC_DEFUN(BASH_FUNC_INET_ATON,
[
AC_CACHE_CHECK([for inet_aton], bash_cv_func_inet_aton,
[AC_TRY_LINK([
struct in_addr ap;], [ inet_aton("127.0.0.1", &ap); ],
bash_cv_func_inet_aton=yes, bash_cv_func_inet_aton=no)])
if test $bash_cv_func_inet_aton = yes; then
AC_DEFINE(HAVE_INET_ATON)
fi
])
AC_DEFUN(BASH_STRUCT_TERMIOS_LDISC,
[AC_MSG_CHECKING([for a c_line member of struct termios])
AC_CACHE_VAL(bash_cv_termios_ldisc,
[AC_TRY_COMPILE([ bash_cv_termios_ldisc=yes, bash_cv_termios_ldisc=no)])AC_MSG_RESULT($bash_cv_termios_ldisc)
if test $bash_cv_termios_ldisc = yes; then
AC_DEFINE(TERMIOS_LDISC)
fi
])
AC_DEFUN(BASH_STRUCT_TERMIO_LDISC,
[AC_MSG_CHECKING([for a c_line member of struct termio])
AC_CACHE_VAL(bash_cv_termio_ldisc,
[AC_TRY_COMPILE([ bash_cv_termio_ldisc=yes, bash_cv_termio_ldisc=no)])AC_MSG_RESULT($bash_cv_termio_ldisc)
if test $bash_cv_termio_ldisc = yes; then
AC_DEFINE(TERMIO_LDISC)
fi
])
AC_DEFUN(BASH_FUNC_GETENV,
[AC_MSG_CHECKING(to see if getenv can be redefined)
AC_CACHE_VAL(bash_cv_getenv_redef,
[AC_TRY_RUN([
char *
getenv (name)
const char *name;
char const *name;
{
return "42";
}
main()
{
char *s;
/* The next allows this program to run, but does not allow bash to link
when it redefines getenv. I'm not really interested in figuring out
why not. */
exit(1);
s = getenv("ABCDE");
exit(s == 0); /* force optimizer to leave getenv in */
}
], bash_cv_getenv_redef=yes, bash_cv_getenv_redef=no,
[AC_MSG_WARN(cannot check getenv redefinition if cross compiling -- defaulting to yes)
bash_cv_getenv_redef=yes]
)])
AC_MSG_RESULT($bash_cv_getenv_redef)
if test $bash_cv_getenv_redef = yes; then
AC_DEFINE(CAN_REDEFINE_GETENV)
fi
])
AC_DEFUN(BASH_FUNC_PRINTF,
[AC_MSG_CHECKING(for declaration of printf in <stdio.h>)
AC_CACHE_VAL(bash_cv_printf_declared,
[AC_TRY_RUN([
typedef int (*_bashfunc)(const char *, ...);
typedef int (*_bashfunc)();
main()
{
_bashfunc pf;
pf = (_bashfunc) printf;
exit(pf == 0);
}
], bash_cv_printf_declared=yes, bash_cv_printf_declared=no,
[AC_MSG_WARN(cannot check printf declaration if cross compiling -- defaulting to yes)
bash_cv_printf_declared=yes]
)])
AC_MSG_RESULT($bash_cv_printf_declared)
if test $bash_cv_printf_declared = yes; then
AC_DEFINE(PRINTF_DECLARED)
fi
])
AC_DEFUN(BASH_FUNC_ULIMIT_MAXFDS,
[AC_MSG_CHECKING(whether ulimit can substitute for getdtablesize)
AC_CACHE_VAL(bash_cv_ulimit_maxfds,
[AC_TRY_RUN([
main()
{
long maxfds = ulimit(4, 0L);
exit (maxfds == -1L);
}
], bash_cv_ulimit_maxfds=yes, bash_cv_ulimit_maxfds=no,
[AC_MSG_WARN(cannot check ulimit if cross compiling -- defaulting to no)
bash_cv_ulimit_maxfds=no]
)])
AC_MSG_RESULT($bash_cv_ulimit_maxfds)
if test $bash_cv_ulimit_maxfds = yes; then
AC_DEFINE(ULIMIT_MAXFDS)
fi
])
AC_DEFUN(BASH_CHECK_LIB_TERMCAP,
[
if test "X$bash_cv_termcap_lib" = "X"; then
_bash_needmsg=yes
else
AC_MSG_CHECKING(which library has the termcap functions)
_bash_needmsg=
fi
AC_CACHE_VAL(bash_cv_termcap_lib,
[AC_CHECK_LIB(termcap, tgetent, bash_cv_termcap_lib=libtermcap,
[AC_CHECK_LIB(curses, tgetent, bash_cv_termcap_lib=libcurses,
[AC_CHECK_LIB(ncurses, tgetent, bash_cv_termcap_lib=libncurses,
bash_cv_termcap_lib=gnutermcap)])])])
if test "X$_bash_needmsg" = "Xyes"; then
AC_MSG_CHECKING(which library has the termcap functions)
fi
AC_MSG_RESULT(using $bash_cv_termcap_lib)
if test $bash_cv_termcap_lib = gnutermcap && test -z "$prefer_curses"; then
LDFLAGS="$LDFLAGS -L./lib/termcap"
TERMCAP_LIB="./lib/termcap/libtermcap.a"
TERMCAP_DEP="./lib/termcap/libtermcap.a"
elif test $bash_cv_termcap_lib = libtermcap && test -z "$prefer_curses"; then
TERMCAP_LIB=-ltermcap
TERMCAP_DEP=
elif test $bash_cv_termcap_lib = libncurses; then
TERMCAP_LIB=-lncurses
TERMCAP_DEP=
else
TERMCAP_LIB=-lcurses
TERMCAP_DEP=
fi
])
AC_DEFUN(BASH_FUNC_GETCWD,
[AC_MSG_CHECKING([if getcwd() calls popen()])
AC_CACHE_VAL(bash_cv_getcwd_calls_popen,
[AC_TRY_RUN([
int popen_called;
FILE *
popen(command, type)
const char *command;
const char *type;
{
popen_called = 1;
return (FILE *)NULL;
}
FILE *_popen(command, type)
const char *command;
const char *type;
{
return (popen (command, type));
}
int
pclose(stream)
FILE *stream;
{
return 0;
}
int
_pclose(stream)
FILE *stream;
{
return 0;
}
main()
{
char lbuf[32];
popen_called = 0;
getcwd(lbuf, 32);
exit (popen_called);
}
], bash_cv_getcwd_calls_popen=no, bash_cv_getcwd_calls_popen=yes,
[AC_MSG_WARN(cannot check whether getcwd calls popen if cross compiling -- defaulting to no)
bash_cv_getcwd_calls_popen=no]
)])
AC_MSG_RESULT($bash_cv_getcwd_calls_popen)
if test $bash_cv_getcwd_calls_popen = yes; then
AC_DEFINE(GETCWD_BROKEN)
fi
])
AC_DEFUN(BASH_STRUCT_DIRENT_D_INO,
[AC_REQUIRE([AC_HEADER_DIRENT])
AC_MSG_CHECKING(if struct dirent has a d_ino member)
AC_CACHE_VAL(bash_cv_dirent_has_dino,
[AC_TRY_COMPILE([
],[
struct dirent d; int z; z = d.d_ino;
], bash_cv_dirent_has_dino=yes, bash_cv_dirent_has_dino=no)])
AC_MSG_RESULT($bash_cv_dirent_has_dino)
if test $bash_cv_dirent_has_dino = yes; then
AC_DEFINE(STRUCT_DIRENT_HAS_D_INO)
fi
])
AC_DEFUN(BASH_STRUCT_DIRENT_D_FILENO,
[AC_REQUIRE([AC_HEADER_DIRENT])
AC_MSG_CHECKING(if struct dirent has a d_fileno member)
AC_CACHE_VAL(bash_cv_dirent_has_d_fileno,
[AC_TRY_COMPILE([
],[
struct dirent d; int z; z = d.d_fileno;
], bash_cv_dirent_has_d_fileno=yes, bash_cv_dirent_has_d_fileno=no)])
AC_MSG_RESULT($bash_cv_dirent_has_d_fileno)
if test $bash_cv_dirent_has_d_fileno = yes; then
AC_DEFINE(STRUCT_DIRENT_HAS_D_FILENO)
fi
])
AC_DEFUN(BASH_REINSTALL_SIGHANDLERS,
[AC_REQUIRE([AC_TYPE_SIGNAL])
AC_REQUIRE([BASH_SIGNAL_CHECK])
AC_MSG_CHECKING([if signal handlers must be reinstalled when invoked])
AC_CACHE_VAL(bash_cv_must_reinstall_sighandlers,
[AC_TRY_RUN([
typedef RETSIGTYPE sigfunc();
int nsigint;
sigfunc *
set_signal_handler(sig, handler)
int sig;
sigfunc *handler;
{
struct sigaction act, oact;
act.sa_handler = handler;
act.sa_flags = 0;
sigemptyset (&act.sa_mask);
sigemptyset (&oact.sa_mask);
sigaction (sig, &act, &oact);
return (oact.sa_handler);
}
RETSIGTYPE
sigint(s)
int s;
{
nsigint++;
}
main()
{
nsigint = 0;
set_signal_handler(SIGINT, sigint);
kill((int)getpid(), SIGINT);
kill((int)getpid(), SIGINT);
exit(nsigint != 2);
}
], bash_cv_must_reinstall_sighandlers=no, bash_cv_must_reinstall_sighandlers=yes,
[AC_MSG_WARN(cannot check signal handling if cross compiling -- defaulting to no)
bash_cv_must_reinstall_sighandlers=no]
)])
AC_MSG_RESULT($bash_cv_must_reinstall_sighandlers)
if test $bash_cv_must_reinstall_sighandlers = yes; then
AC_DEFINE(MUST_REINSTALL_SIGHANDLERS)
fi
])
AC_DEFUN(BASH_FUNC_SBRK_DECLARED,
[AC_MSG_CHECKING(for declaration of sbrk in <unistd.h>)
AC_CACHE_VAL(bash_cv_sbrk_declared,
[AC_EGREP_HEADER(sbrk, unistd.h,
bash_cv_sbrk_declared=yes, bash_cv_sbrk_declared=no)])
AC_MSG_RESULT($bash_cv_sbrk_declared)
if test $bash_cv_sbrk_declared = yes; then
AC_DEFINE(SBRK_DECLARED)
fi
])
dnl check that some necessary job control definitions are present
AC_DEFUN(BASH_JOB_CONTROL_MISSING,
[AC_REQUIRE([BASH_SIGNAL_CHECK])
AC_MSG_CHECKING(for presence of necessary job control definitions)
AC_CACHE_VAL(bash_cv_job_control_missing,
[AC_TRY_RUN([
#include <sys/types.h>
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <signal.h>
/* Add more tests in here as appropriate. */
main()
{
/* signal type */
#if !defined (HAVE_POSIX_SIGNALS) && !defined (HAVE_BSD_SIGNALS)
exit(1);
#endif
/* signals and tty control. */
#if !defined (SIGTSTP) || !defined (SIGSTOP) || !defined (SIGCONT)
exit (1);
#endif
/* process control */
#if !defined (WNOHANG) || !defined (WUNTRACED)
exit(1);
#endif
/* Posix systems have tcgetpgrp and waitpid. */
#if defined (_POSIX_VERSION) && !defined (HAVE_TCGETPGRP)
exit(1);
#endif
#if defined (_POSIX_VERSION) && !defined (HAVE_WAITPID)
exit(1);
#endif
/* Other systems have TIOCSPGRP/TIOCGPRGP and wait3. */
#if !defined (_POSIX_VERSION) && !defined (HAVE_WAIT3)
exit(1);
#endif
exit(0);
}], bash_cv_job_control_missing=present, bash_cv_job_control_missing=missing,
[AC_MSG_WARN(cannot check job control if cross-compiling -- defaulting to missing)
bash_cv_job_control_missing=missing]
)])
AC_MSG_RESULT($bash_cv_job_control_missing)
if test $bash_cv_job_control_missing = missing; then
AC_DEFINE(JOB_CONTROL_MISSING)
fi
])
dnl check whether named pipes are present
dnl this requires a previous check for mkfifo, but that is awkward to specify
AC_DEFUN(BASH_SYS_NAMED_PIPES,
[AC_MSG_CHECKING(for presence of named pipes)
AC_CACHE_VAL(bash_cv_sys_named_pipes,
[AC_TRY_RUN([
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
/* Add more tests in here as appropriate. */
main()
{
int fd, err;
#if defined (HAVE_MKFIFO)
exit (0);
#endif
#if !defined (S_IFIFO) && (defined (_POSIX_VERSION) && !defined (S_ISFIFO))
exit (1);
#endif
#if defined (NeXT)
exit (1);
#endif
err = mkdir("/tmp/bash-aclocal", 0700);
if (err < 0) {
perror ("mkdir");
exit(1);
}
fd = mknod ("/tmp/bash-aclocal/sh-np-autoconf", 0666 | S_IFIFO, 0);
if (fd == -1) {
rmdir ("/tmp/bash-aclocal");
exit (1);
}
close(fd);
unlink ("/tmp/bash-aclocal/sh-np-autoconf");
rmdir ("/tmp/bash-aclocal");
exit(0);
}], bash_cv_sys_named_pipes=present, bash_cv_sys_named_pipes=missing,
[AC_MSG_WARN(cannot check for named pipes if cross-compiling -- defaulting to missing)
bash_cv_sys_named_pipes=missing]
)])
AC_MSG_RESULT($bash_cv_sys_named_pipes)
if test $bash_cv_sys_named_pipes = missing; then
AC_DEFINE(NAMED_PIPES_MISSING)
fi
])
AC_DEFUN(BASH_FUNC_POSIX_SETJMP,
[AC_REQUIRE([BASH_SIGNAL_CHECK])
AC_MSG_CHECKING(for presence of POSIX-style sigsetjmp/siglongjmp)
AC_CACHE_VAL(bash_cv_func_sigsetjmp,
[AC_TRY_RUN([
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#include <signal.h>
#include <setjmp.h>
main()
{
#if !defined (_POSIX_VERSION) || !defined (HAVE_POSIX_SIGNALS)
exit (1);
#else
int code;
sigset_t set, oset;
sigjmp_buf xx;
/* get the mask */
sigemptyset(&set);
sigemptyset(&oset);
sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &set);
sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset);
/* save it */
code = sigsetjmp(xx, 1);
if (code)
exit(0); /* could get sigmask and compare to oset here. */
/* change it */
sigaddset(&set, SIGINT);
sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
/* and siglongjmp */
siglongjmp(xx, 10);
exit(1);
#endif
}], bash_cv_func_sigsetjmp=present, bash_cv_func_sigsetjmp=missing,
[AC_MSG_WARN(cannot check for sigsetjmp/siglongjmp if cross-compiling -- defaulting to missing)
bash_cv_func_sigsetjmp=missing]
)])
AC_MSG_RESULT($bash_cv_func_sigsetjmp)
if test $bash_cv_func_sigsetjmp = present; then
AC_DEFINE(HAVE_POSIX_SIGSETJMP)
fi
])
AC_DEFUN(BASH_HAVE_TIOCGWINSZ,
[AC_MSG_CHECKING(for TIOCGWINSZ in sys/ioctl.h)
AC_CACHE_VAL(bash_cv_tiocgwinsz_in_ioctl,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/ioctl.h>], [int x = TIOCGWINSZ;],
bash_cv_tiocgwinsz_in_ioctl=yes,bash_cv_tiocgwinsz_in_ioctl=no)])
AC_MSG_RESULT($bash_cv_tiocgwinsz_in_ioctl)
if test $bash_cv_tiocgwinsz_in_ioctl = yes; then
AC_DEFINE(GWINSZ_IN_SYS_IOCTL)
fi
])
AC_DEFUN(BASH_STRUCT_WINSIZE,
[AC_MSG_CHECKING(for struct winsize in sys/ioctl.h and termios.h)
AC_CACHE_VAL(bash_cv_struct_winsize_header,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/ioctl.h>], [struct winsize x;],
bash_cv_struct_winsize_header=ioctl_h,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <termios.h>], [struct winsize x;],
bash_cv_struct_winsize_header=termios_h, bash_cv_struct_winsize_header=other)
])])
if test $bash_cv_struct_winsize_header = ioctl_h; then
AC_MSG_RESULT(sys/ioctl.h)
AC_DEFINE(STRUCT_WINSIZE_IN_SYS_IOCTL)
elif test $bash_cv_struct_winsize_header = termios_h; then
AC_MSG_RESULT(termios.h)
AC_DEFINE(STRUCT_WINSIZE_IN_TERMIOS)
else
AC_MSG_RESULT(not found)
fi
])
AC_DEFUN(BASH_HAVE_TIOCSTAT,
[AC_MSG_CHECKING(for TIOCSTAT in sys/ioctl.h)
AC_CACHE_VAL(bash_cv_tiocstat_in_ioctl,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/ioctl.h>], [int x = TIOCSTAT;],
bash_cv_tiocstat_in_ioctl=yes,bash_cv_tiocstat_in_ioctl=no)])
AC_MSG_RESULT($bash_cv_tiocstat_in_ioctl)
if test $bash_cv_tiocstat_in_ioctl = yes; then
AC_DEFINE(TIOCSTAT_IN_SYS_IOCTL)
fi
])
AC_DEFUN(BASH_HAVE_FIONREAD,
[AC_MSG_CHECKING(for FIONREAD in sys/ioctl.h)
AC_CACHE_VAL(bash_cv_fionread_in_ioctl,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/ioctl.h>], [int x = FIONREAD;],
bash_cv_fionread_in_ioctl=yes,bash_cv_fionread_in_ioctl=no)])
AC_MSG_RESULT($bash_cv_fionread_in_ioctl)
if test $bash_cv_fionread_in_ioctl = yes; then
AC_DEFINE(FIONREAD_IN_SYS_IOCTL)
fi
])
dnl
dnl See if speed_t is declared in <sys/types.h>. Some versions of linux
dnl require a definition of speed_t each time <termcap.h> is included,
dnl but you can only get speed_t if you include <termios.h> (on some
dnl versions) or <sys/types.h> (on others).
dnl
AC_DEFUN(BASH_MISC_SPEED_T,
[AC_MSG_CHECKING(for speed_t in sys/types.h)
AC_CACHE_VAL(bash_cv_speed_t_in_sys_types,
[AC_TRY_COMPILE([#include <sys/types.h>], [speed_t x;],
bash_cv_speed_t_in_sys_types=yes,bash_cv_speed_t_in_sys_types=no)])
AC_MSG_RESULT($bash_cv_speed_t_in_sys_types)
if test $bash_cv_speed_t_in_sys_types = yes; then
AC_DEFINE(SPEED_T_IN_SYS_TYPES)
fi
])
AC_DEFUN(BASH_CHECK_GETPW_FUNCS,
[AC_MSG_CHECKING(whether programs are able to redeclare getpw functions)
AC_CACHE_VAL(bash_cv_can_redecl_getpw,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <pwd.h>
extern struct passwd *getpwent();
extern struct passwd *getpwuid();
extern struct passwd *getpwnam();],
[struct passwd *z; z = getpwent(); z = getpwuid(0); z = getpwnam("root");],
bash_cv_can_redecl_getpw=yes,bash_cv_can_redecl_getpw=no)])
AC_MSG_RESULT($bash_cv_can_redecl_getpw)
if test $bash_cv_can_redecl_getpw = no; then
AC_DEFINE(HAVE_GETPW_DECLS)
fi
])
AC_DEFUN(BASH_CHECK_DEV_FD,
[AC_MSG_CHECKING(whether /dev/fd is available)
AC_CACHE_VAL(bash_cv_dev_fd,
[if test -d /dev/fd && test -r /dev/fd/0; then
bash_cv_dev_fd=standard
elif test -d /proc/self/fd && test -r /proc/self/fd/0; then
bash_cv_dev_fd=whacky
else
bash_cv_dev_fd=absent
fi
])
AC_MSG_RESULT($bash_cv_dev_fd)
if test $bash_cv_dev_fd = "standard"; then
AC_DEFINE(HAVE_DEV_FD)
AC_DEFINE(DEV_FD_PREFIX, "/dev/fd/")
elif test $bash_cv_dev_fd = "whacky"; then
AC_DEFINE(HAVE_DEV_FD)
AC_DEFINE(DEV_FD_PREFIX, "/proc/self/fd/")
fi
])
AC_DEFUN(BASH_CHECK_DEV_STDIN,
[AC_MSG_CHECKING(whether /dev/stdin stdout stderr are available)
AC_CACHE_VAL(bash_cv_dev_stdin,
[if test -d /dev/fd && test -r /dev/stdin; then
bash_cv_dev_stdin=present
elif test -d /proc/self/fd && test -r /dev/stdin; then
bash_cv_dev_stdin=present
else
bash_cv_dev_stdin=absent
fi
])
AC_MSG_RESULT($bash_cv_dev_stdin)
if test $bash_cv_dev_stdin = "present"; then
AC_DEFINE(HAVE_DEV_STDIN)
fi
])
dnl
dnl Check for the presence of getpeername in libsocket.
dnl If libsocket is present, check for libnsl and add it to LIBS if
dnl it's there, since most systems with libsocket require linking
AC_DEFUN(BASH_CHECK_SOCKLIB,
[
if test "X$bash_cv_have_socklib" = "X"; then
_bash_needmsg=
else
AC_MSG_CHECKING(for socket library)
_bash_needmsg=yes
fi
AC_CACHE_VAL(bash_cv_have_socklib,
[AC_CHECK_LIB(socket, getpeername,
bash_cv_have_socklib=yes, bash_cv_have_socklib=no, -lnsl)])
if test "X$_bash_needmsg" = Xyes; then
AC_MSG_RESULT($bash_cv_have_socklib)
_bash_needmsg=
fi
if test $bash_cv_have_socklib = yes; then
if test "X$bash_cv_have_libnsl" = "X"; then
_bash_needmsg=
else
AC_MSG_CHECKING(for libnsl)
_bash_needmsg=yes
fi
AC_CACHE_VAL(bash_cv_have_libnsl,
[AC_CHECK_LIB(nsl, t_open,
bash_cv_have_libnsl=yes, bash_cv_have_libnsl=no)])
if test "X$_bash_needmsg" = Xyes; then
AC_MSG_RESULT($bash_cv_have_libnsl)
_bash_needmsg=
fi
if test $bash_cv_have_libnsl = yes; then
LIBS="-lsocket -lnsl $LIBS"
else
LIBS="-lsocket $LIBS"
fi
AC_DEFINE(HAVE_LIBSOCKET)
AC_DEFINE(HAVE_GETPEERNAME)
fi
])
AC_DEFUN(BASH_FUNC_GETHOSTBYNAME,
[if test "X$bash_cv_have_gethostbyname" = "X"; then
_bash_needmsg=yes
else
AC_MSG_CHECKING(for gethostbyname in socket library)
_bash_needmsg=
fi
AC_CACHE_VAL(bash_cv_have_gethostbyname,
[AC_TRY_LINK([[ struct hostent *hp;
hp = gethostbyname("localhost");
], bash_cv_have_gethostbyname=yes, bash_cv_have_gethostbyname=no)]
)
if test "X$_bash_needmsg" = Xyes; then
AC_MSG_CHECKING(for gethostbyname in socket library)
fi
AC_MSG_RESULT($bash_cv_have_gethostbyname)
if test "$bash_cv_have_gethostbyname" = yes; then
AC_DEFINE(HAVE_GETHOSTBYNAME)
fi
])
AC_DEFUN(BASH_DEFAULT_MAIL_DIR,
[AC_MSG_CHECKING(for default mail directory)
AC_CACHE_VAL(bash_cv_mail_dir,
[if test -d /var/mail; then
bash_cv_mail_dir=/var/mail
elif test -d /usr/mail; then
bash_cv_mail_dir=/usr/mail
elif test -d /var/spool/mail; then
bash_cv_mail_dir=/var/spool/mail
elif test -d /usr/spool/mail; then
bash_cv_mail_dir=/usr/spool/mail
else
bash_cv_mail_dir=unknown
fi
])
AC_MSG_RESULT($bash_cv_mail_dir)
if test $bash_cv_mail_dir = "/var/mail"; then
AC_DEFINE(DEFAULT_MAIL_DIRECTORY, "/var/mail")
elif test $bash_cv_mail_dir = "/usr/mail"; then
AC_DEFINE(DEFAULT_MAIL_DIRECTORY, "/usr/mail")
elif test $bash_cv_mail_dir = "/var/spool/mail"; then
AC_DEFINE(DEFAULT_MAIL_DIRECTORY, "/var/spool/mail")
elif test $bash_cv_mail_dir = "/usr/spool/mail"; then
AC_DEFINE(DEFAULT_MAIL_DIRECTORY, "/usr/spool/mail")
else
AC_DEFINE(DEFAULT_MAIL_DIRECTORY, "unknown")
fi
])
AC_DEFUN(BASH_KERNEL_RLIMIT_CHECK,
[AC_MSG_CHECKING([whether $host_os needs _KERNEL for RLIMIT defines])
AC_CACHE_VAL(bash_cv_kernel_rlimit,
[AC_TRY_COMPILE([
],
[
int f;
f = RLIMIT_DATA;
], bash_cv_kernel_rlimit=no,
[AC_TRY_COMPILE([
],
[
int f;
f = RLIMIT_DATA;
], bash_cv_kernel_rlimit=yes, bash_cv_kernel_rlimit=no)]
)])
AC_MSG_RESULT($bash_cv_kernel_rlimit)
if test $bash_cv_kernel_rlimit = yes; then
AC_DEFINE(RLIMIT_NEEDS_KERNEL)
fi
])
AC_DEFUN(BASH_FUNC_STRCOLL,
[
AC_MSG_CHECKING(whether or not strcoll and strcmp differ)
AC_CACHE_VAL(bash_cv_func_strcoll_broken,
[AC_TRY_RUN([
main(c, v)
int c;
char *v[];
{
int r1, r2;
char *deflocale, *defcoll;
deflocale = setlocale(LC_ALL, "");
defcoll = setlocale(LC_COLLATE, "");
/* These two values are taken from tests/glob-test. */
r1 = strcoll("abd", "aXd");
r1 = 0;
r2 = strcmp("abd", "aXd");
/* These two should both be greater than 0. It is permissible for
a system to return different values, as long as the sign is the
same. */
/* Exit with 1 (failure) if these two values are both > 0, since
this tests whether strcoll(3) is broken with respect to strcmp(3)
in the default locale. */
exit (r1 > 0 && r2 > 0);
}
], bash_cv_func_strcoll_broken=yes, bash_cv_func_strcoll_broken=no,
[AC_MSG_WARN(cannot check strcoll if cross compiling -- defaulting to no)
bash_cv_func_strcoll_broken=no]
)])
AC_MSG_RESULT($bash_cv_func_strcoll_broken)
if test $bash_cv_func_strcoll_broken = yes; then
AC_DEFINE(STRCOLL_BROKEN)
fi
])
AC_DEFUN(BASH_LARGE_FILE_SUPPORT,
[AC_MSG_CHECKING(whether large file support needs explicit enabling)
ac_getconfs=''
ac_result=yes
ac_set=''
ac_shellvars='CPPFLAGS LDFLAGS LIBS'
for ac_shellvar in $ac_shellvars; do
case $ac_shellvar in
CPPFLAGS) ac_lfsvar=LFS_CFLAGS ac_lfs64var=LFS64_CFLAGS ;;
*) ac_lfsvar=LFS_$ac_shellvar ac_lfs64var=LFS64_$ac_shellvar ;;
esac
eval test '"${'$ac_shellvar'+set}"' = set && ac_set=$ac_shellvar
(getconf $ac_lfsvar) >/dev/null 2>&1 || { ac_result=no; break; }
ac_getconf=`getconf $ac_lfsvar`
ac_getconf64=`getconf $ac_lfs64var`
ac_getconfs=$ac_getconfs$ac_getconf\ $ac_getconf64
eval ac_test_$ac_shellvar="\$ac_getconf\ \$ac_getconf64"
done
case "$ac_result$ac_getconfs" in
yes) ac_result=no ;;
esac
case "$ac_result$ac_set" in
yes?*) ac_result="yes, but $ac_set is already set, so use its settings"
esac
AC_MSG_RESULT($ac_result)
case $ac_result in
yes)
for ac_shellvar in $ac_shellvars; do
eval $ac_shellvar=\$ac_test_$ac_shellvar
done ;;
esac
])
AC_DEFUN(BASH_SYS_RESTARTABLE_SYSCALLS,
[AC_REQUIRE([BASH_SIGNAL_CHECK])
AC_CACHE_CHECK(for restartable system calls with posix sigaction,
bash_cv_sys_restartable_syscalls,
[AC_TRY_RUN(
[/* Exit 0 (true) if wait returns something other than -1,
i.e. the pid of the child, which means that wait was restarted
after getting the signal. */
static int caught = 0;
void ucatch (isig) int isig; { caught = 1; }
main ()
{
exit (1);
struct sigaction act, oact;
int i, status;
act.sa_handler = ucatch;
/* Might want to add SA_RESTART here, but bash's set_signal_handler
does not. */
act.sa_flags = 0;
sigemptyset(&act.sa_mask);
sigemptyset(&oact.sa_mask);
i = fork ();
/* A possible race condition here, but in practice it never happens. */
if (i == 0) { sleep (3); kill (getppid (), SIGINT); sleep (3); exit (0); }
sigaction(SIGINT, &act, &oact);
status = wait(&i);
if (status == -1) wait(&i);
exit (status == -1);
}
], bash_cv_sys_restartable_syscalls=yes, bash_cv_sys_restartable_syscalls=no,
AC_MSG_WARN(cannot check restartable syscalls if cross compiling))
])
if test $bash_cv_sys_restartable_syscalls = yes; then
AC_DEFINE(HAVE_RESTARTABLE_SYSCALLS)
fi
])
AC_DEFUN(BASH_CHECK_OFF_T_64,
[AC_CACHE_CHECK(for 64-bit off_t, bash_cv_off_t_64,
AC_TRY_COMPILE([
],[
switch (0) case 0: case (sizeof (off_t) <= 4):;
], bash_cv_off_t_64=no, bash_cv_off_t_64=yes))
if test $bash_cv_off_t_64 = yes; then
AC_DEFINE(HAVE_OFF_T_64)
fi])
AC_DEFUN(BASH_STRUCT_TIMEVAL,
[AC_MSG_CHECKING(for struct timeval in sys/time.h and time.h)
AC_CACHE_VAL(bash_cv_struct_timeval,
[
AC_EGREP_HEADER(struct timeval, sys/time.h,
bash_cv_struct_timeval=yes,
AC_EGREP_HEADER(struct timeval, time.h,
bash_cv_struct_timeval=yes,
bash_cv_struct_timeval=no))
])
AC_MSG_RESULT($bash_cv_struct_timeval)
if test $bash_cv_struct_timeval = yes; then
AC_DEFINE(HAVE_TIMEVAL)
fi
])