old-cross-binutils/readline/aclocal.m4
Joel Brobecker 832a94844f * aclocal.m4: Add check for mbrtowc.
* config.h.in: Regenerate.
        * configure: Regenerate.
        * rlmbutil.h: Disable multi-byte if mbrtowc is not defined.
2003-03-03 18:52:27 +00:00

1799 lines
44 KiB
Text

dnl
dnl Bash specific tests
dnl
dnl Some derived from PDKSH 5.1.3 autoconf tests
dnl
AC_DEFUN(BASH_C_LONG_LONG,
[AC_CACHE_CHECK(for long long, ac_cv_c_long_long,
[if test "$GCC" = yes; then
ac_cv_c_long_long=yes
else
AC_TRY_RUN([
int
main()
{
long long foo = 0;
exit(sizeof(long long) < sizeof(long));
}
], ac_cv_c_long_long=yes, ac_cv_c_long_long=no)
fi])
if test $ac_cv_c_long_long = yes; then
AC_DEFINE(HAVE_LONG_LONG, 1, [Define if the `long long' type works.])
fi
])
dnl
dnl This is very similar to AC_C_LONG_DOUBLE, with the fix for IRIX
dnl (< changed to <=) added.
dnl
AC_DEFUN(BASH_C_LONG_DOUBLE,
[AC_CACHE_CHECK(for long double, ac_cv_c_long_double,
[if test "$GCC" = yes; then
ac_cv_c_long_double=yes
else
AC_TRY_RUN([
int
main()
{
/* The Stardent Vistra knows sizeof(long double), but does not
support it. */
long double foo = 0.0;
/* On Ultrix 4.3 cc, long double is 4 and double is 8. */
/* On IRIX 5.3, the compiler converts long double to double with a warning,
but compiles this successfully. */
exit(sizeof(long double) <= sizeof(double));
}
], ac_cv_c_long_double=yes, ac_cv_c_long_double=no)
fi])
if test $ac_cv_c_long_double = yes; then
AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if the `long double' type works.])
fi
])
dnl
dnl Check for <inttypes.h>. This is separated out so that it can be
dnl AC_REQUIREd.
dnl
dnl BASH_HEADER_INTTYPES
AC_DEFUN(BASH_HEADER_INTTYPES,
[
AC_CHECK_HEADERS(inttypes.h)
])
dnl
dnl check for typedef'd symbols in header files, but allow the caller to
dnl specify the include files to be checked in addition to the default
dnl
dnl BASH_CHECK_TYPE(TYPE, HEADERS, DEFAULT[, VALUE-IF-FOUND])
AC_DEFUN(BASH_CHECK_TYPE,
[
AC_REQUIRE([AC_HEADER_STDC])dnl
AC_REQUIRE([BASH_HEADER_INTTYPES])
AC_MSG_CHECKING(for $1)
AC_CACHE_VAL(bash_cv_type_$1,
[AC_EGREP_CPP($1, [#include <sys/types.h>
#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif
#if HAVE_INTTYPES_H
#include <inttypes.h>
#endif
$2
], bash_cv_type_$1=yes, bash_cv_type_$1=no)])
AC_MSG_RESULT($bash_cv_type_$1)
ifelse($#, 4, [if test $bash_cv_type_$1 = yes; then
AC_DEFINE($4)
fi])
if test $bash_cv_type_$1 = no; then
AC_DEFINE_UNQUOTED($1, $3)
fi
])
dnl
dnl BASH_CHECK_DECL(FUNC)
dnl
dnl Check for a declaration of FUNC in stdlib.h and inttypes.h like
dnl AC_CHECK_DECL
dnl
AC_DEFUN(BASH_CHECK_DECL,
[
AC_REQUIRE([AC_HEADER_STDC])
AC_REQUIRE([BASH_HEADER_INTTYPES])
AC_CACHE_CHECK([for declaration of $1], bash_cv_decl_$1,
[AC_TRY_LINK(
[
#if STDC_HEADERS
# include <stdlib.h>
#endif
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
],
[return !$1;],
bash_cv_decl_$1=yes, bash_cv_decl_$1=no)])
bash_tr_func=HAVE_DECL_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
if test $bash_cv_decl_$1 = yes; then
AC_DEFINE_UNQUOTED($bash_tr_func, 1)
else
AC_DEFINE_UNQUOTED($bash_tr_func, 0)
fi
])
AC_DEFUN(BASH_DECL_PRINTF,
[AC_MSG_CHECKING(for declaration of printf in <stdio.h>)
AC_CACHE_VAL(bash_cv_printf_declared,
[AC_TRY_RUN([
#include <stdio.h>
#ifdef __STDC__
typedef int (*_bashfunc)(const char *, ...);
#else
typedef int (*_bashfunc)();
#endif
main()
{
_bashfunc pf;
pf = (_bashfunc) printf;
exit(pf == 0);
}
], bash_cv_printf_declared=yes, bash_cv_printf_declared=no,
[AC_MSG_WARN(cannot check printf declaration if cross compiling -- defaulting to yes)
bash_cv_printf_declared=yes]
)])
AC_MSG_RESULT($bash_cv_printf_declared)
if test $bash_cv_printf_declared = yes; then
AC_DEFINE(PRINTF_DECLARED)
fi
])
AC_DEFUN(BASH_DECL_SBRK,
[AC_MSG_CHECKING(for declaration of sbrk in <unistd.h>)
AC_CACHE_VAL(bash_cv_sbrk_declared,
[AC_EGREP_HEADER(sbrk, unistd.h,
bash_cv_sbrk_declared=yes, bash_cv_sbrk_declared=no)])
AC_MSG_RESULT($bash_cv_sbrk_declared)
if test $bash_cv_sbrk_declared = yes; then
AC_DEFINE(SBRK_DECLARED)
fi
])
dnl
dnl Check for sys_siglist[] or _sys_siglist[]
dnl
AC_DEFUN(BASH_DECL_UNDER_SYS_SIGLIST,
[AC_MSG_CHECKING([for _sys_siglist in signal.h or unistd.h])
AC_CACHE_VAL(bash_cv_decl_under_sys_siglist,
[AC_TRY_COMPILE([
#include <sys/types.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif], [ char *msg = _sys_siglist[2]; ],
bash_cv_decl_under_sys_siglist=yes, bash_cv_decl_under_sys_siglist=no,
[AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)])])dnl
AC_MSG_RESULT($bash_cv_decl_under_sys_siglist)
if test $bash_cv_decl_under_sys_siglist = yes; then
AC_DEFINE(UNDER_SYS_SIGLIST_DECLARED)
fi
])
AC_DEFUN(BASH_UNDER_SYS_SIGLIST,
[AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST])
AC_MSG_CHECKING([for _sys_siglist in system C library])
AC_CACHE_VAL(bash_cv_under_sys_siglist,
[AC_TRY_RUN([
#include <sys/types.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef UNDER_SYS_SIGLIST_DECLARED
extern char *_sys_siglist[];
#endif
main()
{
char *msg = (char *)_sys_siglist[2];
exit(msg == 0);
}],
bash_cv_under_sys_siglist=yes, bash_cv_under_sys_siglist=no,
[AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)
bash_cv_under_sys_siglist=no])])
AC_MSG_RESULT($bash_cv_under_sys_siglist)
if test $bash_cv_under_sys_siglist = yes; then
AC_DEFINE(HAVE_UNDER_SYS_SIGLIST)
fi
])
AC_DEFUN(BASH_SYS_SIGLIST,
[AC_REQUIRE([AC_DECL_SYS_SIGLIST])
AC_MSG_CHECKING([for sys_siglist in system C library])
AC_CACHE_VAL(bash_cv_sys_siglist,
[AC_TRY_RUN([
#include <sys/types.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef SYS_SIGLIST_DECLARED
extern char *sys_siglist[];
#endif
main()
{
char *msg = sys_siglist[2];
exit(msg == 0);
}],
bash_cv_sys_siglist=yes, bash_cv_sys_siglist=no,
[AC_MSG_WARN(cannot check for sys_siglist if cross compiling -- defaulting to no)
bash_cv_sys_siglist=no])])
AC_MSG_RESULT($bash_cv_sys_siglist)
if test $bash_cv_sys_siglist = yes; then
AC_DEFINE(HAVE_SYS_SIGLIST)
fi
])
dnl Check for the various permutations of sys_siglist and make sure we
dnl compile in siglist.o if they're not defined
AC_DEFUN(BASH_CHECK_SYS_SIGLIST, [
AC_REQUIRE([BASH_SYS_SIGLIST])
AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST])
AC_REQUIRE([BASH_FUNC_STRSIGNAL])
if test "$bash_cv_sys_siglist" = no && test "$bash_cv_under_sys_siglist" = no && test "$bash_cv_have_strsignal" = no; then
SIGLIST_O=siglist.o
else
SIGLIST_O=
fi
AC_SUBST([SIGLIST_O])
])
dnl Check for sys_errlist[] and sys_nerr, check for declaration
AC_DEFUN(BASH_SYS_ERRLIST,
[AC_MSG_CHECKING([for sys_errlist and sys_nerr])
AC_CACHE_VAL(bash_cv_sys_errlist,
[AC_TRY_LINK([#include <errno.h>],
[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)])dnl
AC_MSG_RESULT($bash_cv_sys_errlist)
if test $bash_cv_sys_errlist = yes; then
AC_DEFINE(HAVE_SYS_ERRLIST)
fi
])
dnl
dnl Check if dup2() does not clear the close on exec flag
dnl
AC_DEFUN(BASH_FUNC_DUP2_CLOEXEC_CHECK,
[AC_MSG_CHECKING(if dup2 fails to clear the close-on-exec flag)
AC_CACHE_VAL(bash_cv_dup2_broken,
[AC_TRY_RUN([
#include <sys/types.h>
#include <fcntl.h>
main()
{
int fd1, fd2, fl;
fd1 = open("/dev/null", 2);
if (fcntl(fd1, 2, 1) < 0)
exit(1);
fd2 = dup2(fd1, 1);
if (fd2 < 0)
exit(2);
fl = fcntl(fd2, 1, 0);
/* fl will be 1 if dup2 did not reset the close-on-exec flag. */
exit(fl != 1);
}
], bash_cv_dup2_broken=yes, bash_cv_dup2_broken=no,
[AC_MSG_WARN(cannot check dup2 if cross compiling -- defaulting to no)
bash_cv_dup2_broken=no])
])
AC_MSG_RESULT($bash_cv_dup2_broken)
if test $bash_cv_dup2_broken = yes; then
AC_DEFINE(DUP2_BROKEN)
fi
])
AC_DEFUN(BASH_FUNC_STRSIGNAL,
[AC_MSG_CHECKING([for the existence of strsignal])
AC_CACHE_VAL(bash_cv_have_strsignal,
[AC_TRY_LINK([#include <sys/types.h>
#include <signal.h>],
[char *s = (char *)strsignal(2);],
bash_cv_have_strsignal=yes, bash_cv_have_strsignal=no)])
AC_MSG_RESULT($bash_cv_have_strsignal)
if test $bash_cv_have_strsignal = yes; then
AC_DEFINE(HAVE_STRSIGNAL)
fi
])
dnl Check to see if opendir will open non-directories (not a nice thing)
AC_DEFUN(BASH_FUNC_OPENDIR_CHECK,
[AC_REQUIRE([AC_HEADER_DIRENT])dnl
AC_MSG_CHECKING(if opendir() opens non-directories)
AC_CACHE_VAL(bash_cv_opendir_not_robust,
[AC_TRY_RUN([
#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#if defined(HAVE_DIRENT_H)
# include <dirent.h>
#else
# define dirent direct
# ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif /* SYSNDIR */
# ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif /* SYSDIR */
# ifdef HAVE_NDIR_H
# include <ndir.h>
# endif
#endif /* HAVE_DIRENT_H */
main()
{
DIR *dir;
int fd, err;
err = mkdir("/tmp/bash-aclocal", 0700);
if (err < 0) {
perror("mkdir");
exit(1);
}
unlink("/tmp/bash-aclocal/not_a_directory");
fd = open("/tmp/bash-aclocal/not_a_directory", O_WRONLY|O_CREAT|O_EXCL, 0666);
write(fd, "\n", 1);
close(fd);
dir = opendir("/tmp/bash-aclocal/not_a_directory");
unlink("/tmp/bash-aclocal/not_a_directory");
rmdir("/tmp/bash-aclocal");
exit (dir == 0);
}], bash_cv_opendir_not_robust=yes,bash_cv_opendir_not_robust=no,
[AC_MSG_WARN(cannot check opendir if cross compiling -- defaulting to no)
bash_cv_opendir_not_robust=no]
)])
AC_MSG_RESULT($bash_cv_opendir_not_robust)
if test $bash_cv_opendir_not_robust = yes; then
AC_DEFINE(OPENDIR_NOT_ROBUST)
fi
])
dnl
AC_DEFUN(BASH_TYPE_SIGHANDLER,
[AC_MSG_CHECKING([whether signal handlers are of type void])
AC_CACHE_VAL(bash_cv_void_sighandler,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <signal.h>
#ifdef signal
#undef signal
#endif
#ifdef __cplusplus
extern "C"
#endif
void (*signal ()) ();],
[int i;], bash_cv_void_sighandler=yes, bash_cv_void_sighandler=no)])dnl
AC_MSG_RESULT($bash_cv_void_sighandler)
if test $bash_cv_void_sighandler = yes; then
AC_DEFINE(VOID_SIGHANDLER)
fi
])
dnl
dnl A signed 16-bit integer quantity
dnl
AC_DEFUN(BASH_TYPE_BITS16_T,
[
if test "$ac_cv_sizeof_short" = 2; then
AC_CHECK_TYPE(bits16_t, short)
elif test "$ac_cv_sizeof_char" = 2; then
AC_CHECK_TYPE(bits16_t, char)
else
AC_CHECK_TYPE(bits16_t, short)
fi
])
dnl
dnl An unsigned 16-bit integer quantity
dnl
AC_DEFUN(BASH_TYPE_U_BITS16_T,
[
if test "$ac_cv_sizeof_short" = 2; then
AC_CHECK_TYPE(u_bits16_t, unsigned short)
elif test "$ac_cv_sizeof_char" = 2; then
AC_CHECK_TYPE(u_bits16_t, unsigned char)
else
AC_CHECK_TYPE(u_bits16_t, unsigned short)
fi
])
dnl
dnl A signed 32-bit integer quantity
dnl
AC_DEFUN(BASH_TYPE_BITS32_T,
[
if test "$ac_cv_sizeof_int" = 4; then
AC_CHECK_TYPE(bits32_t, int)
elif test "$ac_cv_sizeof_long" = 4; then
AC_CHECK_TYPE(bits32_t, long)
else
AC_CHECK_TYPE(bits32_t, int)
fi
])
dnl
dnl An unsigned 32-bit integer quantity
dnl
AC_DEFUN(BASH_TYPE_U_BITS32_T,
[
if test "$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" = "$ac_cv_sizeof_char_p"; then
AC_CHECK_TYPE(ptrdiff_t, long)
elif test "$ac_cv_type_long_long" = yes && test "$ac_cv_sizeof_long_long" = "$ac_cv_sizeof_char_p"; then
AC_CHECK_TYPE(ptrdiff_t, [long long])
else
AC_CHECK_TYPE(ptrdiff_t, int)
fi
])
dnl
dnl A signed 64-bit quantity
dnl
AC_DEFUN(BASH_TYPE_BITS64_T,
[
if test "$ac_cv_sizeof_char_p" = 8; then
AC_CHECK_TYPE(bits64_t, char *)
elif test "$ac_cv_sizeof_double" = 8; then
AC_CHECK_TYPE(bits64_t, double)
elif test -n "$ac_cv_type_long_long" && test "$ac_cv_sizeof_long_long" = 8; then
AC_CHECK_TYPE(bits64_t, [long long])
elif test "$ac_cv_sizeof_long" = 8; then
AC_CHECK_TYPE(bits64_t, long)
else
AC_CHECK_TYPE(bits64_t, double)
fi
])
AC_DEFUN(BASH_TYPE_LONG_LONG,
[
AC_CACHE_CHECK([for long long], bash_cv_type_long_long,
[AC_TRY_LINK([
long long ll = 1; int i = 63;],
[
long long llm = (long long) -1;
return ll << i | ll >> i | llm / ll | llm % ll;
], bash_cv_type_long_long='long long', bash_cv_type_long_long='long')])
if test "$bash_cv_type_long_long" = 'long long'; then
AC_DEFINE(HAVE_LONG_LONG, 1)
fi
])
AC_DEFUN(BASH_TYPE_UNSIGNED_LONG_LONG,
[
AC_CACHE_CHECK([for unsigned long long], bash_cv_type_unsigned_long_long,
[AC_TRY_LINK([
unsigned long long ull = 1; int i = 63;],
[
unsigned long long ullmax = (unsigned long long) -1;
return ull << i | ull >> i | ullmax / ull | ullmax % ull;
], bash_cv_type_unsigned_long_long='unsigned long long',
bash_cv_type_unsigned_long_long='unsigned long')])
if test "$bash_cv_type_unsigned_long_long" = 'unsigned long long'; then
AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1)
fi
])
dnl
dnl Type of struct rlimit fields: some systems (OSF/1, NetBSD, RISC/os 5.0)
dnl have a rlim_t, others (4.4BSD based systems) use quad_t, others use
dnl long and still others use int (HP-UX 9.01, SunOS 4.1.3). To simplify
dnl matters, this just checks for rlim_t, quad_t, or long.
dnl
AC_DEFUN(BASH_TYPE_RLIMIT,
[AC_MSG_CHECKING(for size and type of struct rlimit fields)
AC_CACHE_VAL(bash_cv_type_rlimit,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/resource.h>],
[rlim_t xxx;], bash_cv_type_rlimit=rlim_t,[
AC_TRY_RUN([
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
main()
{
#ifdef HAVE_QUAD_T
struct rlimit rl;
if (sizeof(rl.rlim_cur) == sizeof(quad_t))
exit(0);
#endif
exit(1);
}], bash_cv_type_rlimit=quad_t, bash_cv_type_rlimit=long,
[AC_MSG_WARN(cannot check quad_t if cross compiling -- defaulting to long)
bash_cv_type_rlimit=long])])
])
AC_MSG_RESULT($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_FUNC_LSTAT,
[dnl Cannot use AC_CHECK_FUNCS(lstat) because Linux defines lstat() as an
dnl inline function in <sys/stat.h>.
AC_CACHE_CHECK([for lstat], bash_cv_func_lstat,
[AC_TRY_LINK([
#include <sys/types.h>
#include <sys/stat.h>
],[ 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([
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
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 $bash_cv_func_inet_aton = yes; then
AC_DEFINE(HAVE_INET_ATON)
else
AC_LIBOBJ(inet_aton)
fi
])
AC_DEFUN(BASH_FUNC_GETENV,
[AC_MSG_CHECKING(to see if getenv can be redefined)
AC_CACHE_VAL(bash_cv_getenv_redef,
[AC_TRY_RUN([
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifndef __STDC__
# ifndef const
# define const
# endif
#endif
char *
getenv (name)
#if defined (__linux__) || defined (__bsdi__) || defined (convex)
const char *name;
#else
char const *name;
#endif /* !__linux__ && !__bsdi__ && !convex */
{
return "42";
}
main()
{
char *s;
/* The next allows this program to run, but does not allow bash to link
when it redefines getenv. I'm not really interested in figuring out
why not. */
#if defined (NeXT)
exit(1);
#endif
s = getenv("ABCDE");
exit(s == 0); /* force optimizer to leave getenv in */
}
], bash_cv_getenv_redef=yes, bash_cv_getenv_redef=no,
[AC_MSG_WARN(cannot check getenv redefinition if cross compiling -- defaulting to yes)
bash_cv_getenv_redef=yes]
)])
AC_MSG_RESULT($bash_cv_getenv_redef)
if test $bash_cv_getenv_redef = yes; then
AC_DEFINE(CAN_REDEFINE_GETENV)
fi
])
# We should check for putenv before calling this
AC_DEFUN(BASH_FUNC_STD_PUTENV,
[
AC_REQUIRE([AC_HEADER_STDC])
AC_REQUIRE([AC_C_PROTOTYPES])
AC_CACHE_CHECK([for standard-conformant putenv declaration], bash_cv_std_putenv,
[AC_TRY_LINK([
#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif
#ifndef __STDC__
# ifndef const
# define const
# endif
#endif
#ifdef PROTOTYPES
extern int putenv (char *);
#else
extern int putenv ();
#endif
],
[return (putenv == 0);],
bash_cv_std_putenv=yes, bash_cv_std_putenv=no
)])
if test $bash_cv_std_putenv = yes; then
AC_DEFINE(HAVE_STD_PUTENV)
fi
])
# We should check for unsetenv before calling this
AC_DEFUN(BASH_FUNC_STD_UNSETENV,
[
AC_REQUIRE([AC_HEADER_STDC])
AC_REQUIRE([AC_C_PROTOTYPES])
AC_CACHE_CHECK([for standard-conformant unsetenv declaration], bash_cv_std_unsetenv,
[AC_TRY_LINK([
#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif
#ifndef __STDC__
# ifndef const
# define const
# endif
#endif
#ifdef PROTOTYPES
extern int unsetenv (const char *);
#else
extern int unsetenv ();
#endif
],
[return (unsetenv == 0);],
bash_cv_std_unsetenv=yes, bash_cv_std_unsetenv=no
)])
if test $bash_cv_std_unsetenv = yes; then
AC_DEFINE(HAVE_STD_UNSETENV)
fi
])
AC_DEFUN(BASH_FUNC_ULIMIT_MAXFDS,
[AC_MSG_CHECKING(whether ulimit can substitute for getdtablesize)
AC_CACHE_VAL(bash_cv_ulimit_maxfds,
[AC_TRY_RUN([
main()
{
long maxfds = ulimit(4, 0L);
exit (maxfds == -1L);
}
], bash_cv_ulimit_maxfds=yes, bash_cv_ulimit_maxfds=no,
[AC_MSG_WARN(cannot check ulimit if cross compiling -- defaulting to no)
bash_cv_ulimit_maxfds=no]
)])
AC_MSG_RESULT($bash_cv_ulimit_maxfds)
if test $bash_cv_ulimit_maxfds = yes; then
AC_DEFINE(ULIMIT_MAXFDS)
fi
])
AC_DEFUN(BASH_FUNC_GETCWD,
[AC_MSG_CHECKING([if getcwd() calls popen()])
AC_CACHE_VAL(bash_cv_getcwd_calls_popen,
[AC_TRY_RUN([
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef __STDC__
#ifndef const
#define const
#endif
#endif
int popen_called;
FILE *
popen(command, type)
const char *command;
const char *type;
{
popen_called = 1;
return (FILE *)NULL;
}
FILE *_popen(command, type)
const char *command;
const char *type;
{
return (popen (command, type));
}
int
pclose(stream)
FILE *stream;
{
return 0;
}
int
_pclose(stream)
FILE *stream;
{
return 0;
}
main()
{
char lbuf[32];
popen_called = 0;
getcwd(lbuf, 32);
exit (popen_called);
}
], bash_cv_getcwd_calls_popen=no, bash_cv_getcwd_calls_popen=yes,
[AC_MSG_WARN(cannot check whether getcwd calls popen if cross compiling -- defaulting to no)
bash_cv_getcwd_calls_popen=no]
)])
AC_MSG_RESULT($bash_cv_getcwd_calls_popen)
if test $bash_cv_getcwd_calls_popen = yes; then
AC_DEFINE(GETCWD_BROKEN)
AC_LIBOBJ(getcwd)
fi
])
dnl
dnl This needs BASH_CHECK_SOCKLIB, but since that's not called on every
dnl system, we can't use AC_PREREQ
dnl
AC_DEFUN(BASH_FUNC_GETHOSTBYNAME,
[if test "X$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([#include <netdb.h>],
[ 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 "$bash_cv_have_gethostbyname" = yes; then
AC_DEFINE(HAVE_GETHOSTBYNAME)
fi
])
AC_DEFUN(BASH_FUNC_FNMATCH_EXTMATCH,
[AC_MSG_CHECKING(if fnmatch does extended pattern matching with FNM_EXTMATCH)
AC_CACHE_VAL(bash_cv_fnm_extmatch,
[AC_TRY_RUN([
#include <fnmatch.h>
main()
{
#ifdef FNM_EXTMATCH
exit (0);
#else
exit (1);
#endif
}
], bash_cv_fnm_extmatch=yes, bash_cv_fnm_extmatch=no,
[AC_MSG_WARN(cannot check FNM_EXTMATCH if cross compiling -- defaulting to no)
bash_cv_fnm_extmatch=no])
])
AC_MSG_RESULT($bash_cv_fnm_extmatch)
if test $bash_cv_fnm_extmatch = yes; then
AC_DEFINE(HAVE_LIBC_FNM_EXTMATCH)
fi
])
AC_DEFUN(BASH_FUNC_POSIX_SETJMP,
[AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE])
AC_MSG_CHECKING(for presence of POSIX-style sigsetjmp/siglongjmp)
AC_CACHE_VAL(bash_cv_func_sigsetjmp,
[AC_TRY_RUN([
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#include <signal.h>
#include <setjmp.h>
main()
{
#if !defined (_POSIX_VERSION) || !defined (HAVE_POSIX_SIGNALS)
exit (1);
#else
int code;
sigset_t set, oset;
sigjmp_buf xx;
/* get the mask */
sigemptyset(&set);
sigemptyset(&oset);
sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &set);
sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset);
/* save it */
code = sigsetjmp(xx, 1);
if (code)
exit(0); /* could get sigmask and compare to oset here. */
/* change it */
sigaddset(&set, SIGINT);
sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
/* and siglongjmp */
siglongjmp(xx, 10);
exit(1);
#endif
}], bash_cv_func_sigsetjmp=present, bash_cv_func_sigsetjmp=missing,
[AC_MSG_WARN(cannot check for sigsetjmp/siglongjmp if cross-compiling -- defaulting to missing)
bash_cv_func_sigsetjmp=missing]
)])
AC_MSG_RESULT($bash_cv_func_sigsetjmp)
if test $bash_cv_func_sigsetjmp = present; then
AC_DEFINE(HAVE_POSIX_SIGSETJMP)
fi
])
AC_DEFUN(BASH_FUNC_STRCOLL,
[
AC_MSG_CHECKING(whether or not strcoll and strcmp differ)
AC_CACHE_VAL(bash_cv_func_strcoll_broken,
[AC_TRY_RUN([
#include <stdio.h>
#if defined (HAVE_LOCALE_H)
#include <locale.h>
#endif
main(c, v)
int c;
char *v[];
{
int r1, r2;
char *deflocale, *defcoll;
#ifdef HAVE_SETLOCALE
deflocale = setlocale(LC_ALL, "");
defcoll = setlocale(LC_COLLATE, "");
#endif
#ifdef HAVE_STRCOLL
/* These two values are taken from tests/glob-test. */
r1 = strcoll("abd", "aXd");
#else
r1 = 0;
#endif
r2 = strcmp("abd", "aXd");
/* These two should both be greater than 0. It is permissible for
a system to return different values, as long as the sign is the
same. */
/* Exit with 1 (failure) if these two values are both > 0, since
this tests whether strcoll(3) is broken with respect to strcmp(3)
in the default locale. */
exit (r1 > 0 && r2 > 0);
}
], bash_cv_func_strcoll_broken=yes, bash_cv_func_strcoll_broken=no,
[AC_MSG_WARN(cannot check strcoll if cross compiling -- defaulting to no)
bash_cv_func_strcoll_broken=no]
)])
AC_MSG_RESULT($bash_cv_func_strcoll_broken)
if test $bash_cv_func_strcoll_broken = yes; then
AC_DEFINE(STRCOLL_BROKEN)
fi
])
AC_DEFUN(BASH_FUNC_PRINTF_A_FORMAT,
[AC_MSG_CHECKING([for printf floating point output in hex notation])
AC_CACHE_VAL(bash_cv_printf_a_format,
[AC_TRY_RUN([
#include <stdio.h>
#include <string.h>
int
main()
{
double y = 0.0;
char abuf[1024];
sprintf(abuf, "%A", y);
exit(strchr(abuf, 'P') == (char *)0);
}
], bash_cv_printf_a_format=yes, bash_cv_printf_a_format=no,
[AC_MSG_WARN(cannot check printf if cross compiling -- defaulting to no)
bash_cv_printf_a_format=no]
)])
AC_MSG_RESULT($bash_cv_printf_a_format)
if test $bash_cv_printf_a_format = yes; then
AC_DEFINE(HAVE_PRINTF_A_FORMAT)
fi
])
AC_DEFUN(BASH_STRUCT_TERMIOS_LDISC,
[
AC_CHECK_MEMBER(struct termios.c_line, AC_DEFINE(TERMIOS_LDISC), ,[
#include <sys/types.h>
#include <termios.h>
])
])
AC_DEFUN(BASH_STRUCT_TERMIO_LDISC,
[
AC_CHECK_MEMBER(struct termio.c_line, AC_DEFINE(TERMIO_LDISC), ,[
#include <sys/types.h>
#include <termio.h>
])
])
dnl
dnl Like AC_STRUCT_ST_BLOCKS, but doesn't muck with LIBOBJS
dnl
dnl sets bash_cv_struct_stat_st_blocks
dnl
dnl unused for now; we'll see how AC_CHECK_MEMBERS works
dnl
AC_DEFUN(BASH_STRUCT_ST_BLOCKS,
[
AC_MSG_CHECKING([for struct stat.st_blocks])
AC_CACHE_VAL(bash_cv_struct_stat_st_blocks,
[AC_TRY_COMPILE(
[
#include <sys/types.h>
#include <sys/stat.h>
],
[
main()
{
static struct stat a;
if (a.st_blocks) return 0;
return 0;
}
], bash_cv_struct_stat_st_blocks=yes, bash_cv_struct_stat_st_blocks=no)
])
AC_MSG_RESULT($bash_cv_struct_stat_st_blocks)
if test "$bash_cv_struct_stat_st_blocks" = "yes"; then
AC_DEFINE(HAVE_STRUCT_STAT_ST_BLOCKS)
fi
])
AC_DEFUN(BASH_CHECK_LIB_TERMCAP,
[
if test "X$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(tinfo, tgetent, bash_cv_termcap_lib=libtinfo,
[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 = libtinfo; then
TERMCAP_LIB=-ltinfo
TERMCAP_DEP=
elif test $bash_cv_termcap_lib = libncurses; then
TERMCAP_LIB=-lncurses
TERMCAP_DEP=
else
TERMCAP_LIB=-lcurses
TERMCAP_DEP=
fi
])
dnl
dnl Check for the presence of getpeername in libsocket.
dnl If libsocket is present, check for libnsl and add it to LIBS if
dnl it's there, since most systems with libsocket require linking
dnl with libnsl as well. This should only be called if getpeername
dnl was not found in libc.
dnl
dnl NOTE: IF WE FIND GETPEERNAME, WE ASSUME THAT WE HAVE BIND/CONNECT
dnl AS WELL
dnl
AC_DEFUN(BASH_CHECK_LIB_SOCKET,
[
if test "X$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 $bash_cv_have_socklib = yes; then
# check for libnsl, add it to LIBS if present
if test "X$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 $LIBS"
fi
AC_DEFINE(HAVE_LIBSOCKET)
AC_DEFINE(HAVE_GETPEERNAME)
fi
])
AC_DEFUN(BASH_STRUCT_DIRENT_D_INO,
[AC_REQUIRE([AC_HEADER_DIRENT])
AC_MSG_CHECKING(if struct dirent has a d_ino member)
AC_CACHE_VAL(bash_cv_dirent_has_dino,
[AC_TRY_COMPILE([
#include <stdio.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#if defined(HAVE_DIRENT_H)
# include <dirent.h>
#else
# define dirent direct
# ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif /* SYSNDIR */
# ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif /* SYSDIR */
# ifdef HAVE_NDIR_H
# include <ndir.h>
# endif
#endif /* HAVE_DIRENT_H */
],[
struct dirent d; int z; z = d.d_ino;
], bash_cv_dirent_has_dino=yes, bash_cv_dirent_has_dino=no)])
AC_MSG_RESULT($bash_cv_dirent_has_dino)
if test $bash_cv_dirent_has_dino = yes; then
AC_DEFINE(STRUCT_DIRENT_HAS_D_INO)
fi
])
AC_DEFUN(BASH_STRUCT_DIRENT_D_FILENO,
[AC_REQUIRE([AC_HEADER_DIRENT])
AC_MSG_CHECKING(if struct dirent has a d_fileno member)
AC_CACHE_VAL(bash_cv_dirent_has_d_fileno,
[AC_TRY_COMPILE([
#include <stdio.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#if defined(HAVE_DIRENT_H)
# include <dirent.h>
#else
# define dirent direct
# ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif /* SYSNDIR */
# ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif /* SYSDIR */
# ifdef HAVE_NDIR_H
# include <ndir.h>
# endif
#endif /* HAVE_DIRENT_H */
],[
struct dirent d; int z; z = d.d_fileno;
], bash_cv_dirent_has_d_fileno=yes, bash_cv_dirent_has_d_fileno=no)])
AC_MSG_RESULT($bash_cv_dirent_has_d_fileno)
if test $bash_cv_dirent_has_d_fileno = yes; then
AC_DEFINE(STRUCT_DIRENT_HAS_D_FILENO)
fi
])
AC_DEFUN(BASH_STRUCT_TIMEVAL,
[AC_MSG_CHECKING(for struct timeval in sys/time.h and time.h)
AC_CACHE_VAL(bash_cv_struct_timeval,
[
AC_EGREP_HEADER(struct timeval, sys/time.h,
bash_cv_struct_timeval=yes,
AC_EGREP_HEADER(struct timeval, time.h,
bash_cv_struct_timeval=yes,
bash_cv_struct_timeval=no))
])
AC_MSG_RESULT($bash_cv_struct_timeval)
if test $bash_cv_struct_timeval = yes; then
AC_DEFINE(HAVE_TIMEVAL)
fi
])
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 $bash_cv_struct_winsize_header = termios_h; then
AC_MSG_RESULT(termios.h)
AC_DEFINE(STRUCT_WINSIZE_IN_TERMIOS)
else
AC_MSG_RESULT(not found)
fi
])
dnl Check type of signal routines (posix, 4.2bsd, 4.1bsd or v7)
AC_DEFUN(BASH_SYS_SIGNAL_VINTAGE,
[AC_REQUIRE([AC_TYPE_SIGNAL])
AC_MSG_CHECKING(for type of signal functions)
AC_CACHE_VAL(bash_cv_signal_vintage,
[
AC_TRY_LINK([#include <signal.h>],[
sigset_t ss;
struct sigaction sa;
sigemptyset(&ss); sigsuspend(&ss);
sigaction(SIGINT, &sa, (struct sigaction *) 0);
sigprocmask(SIG_BLOCK, &ss, (sigset_t *) 0);
], bash_cv_signal_vintage=posix,
[
AC_TRY_LINK([#include <signal.h>], [
int mask = sigmask(SIGINT);
sigsetmask(mask); sigblock(mask); sigpause(mask);
], bash_cv_signal_vintage=4.2bsd,
[
AC_TRY_LINK([
#include <signal.h>
RETSIGTYPE foo() { }], [
int mask = sigmask(SIGINT);
sigset(SIGINT, foo); sigrelse(SIGINT);
sighold(SIGINT); sigpause(SIGINT);
], bash_cv_signal_vintage=svr3, bash_cv_signal_vintage=v7
)]
)]
)
])
AC_MSG_RESULT($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 "$bash_cv_signal_vintage" = svr3; then
AC_DEFINE(HAVE_USG_SIGHOLD)
fi
])
dnl Check if the pgrp of setpgrp() can't be the pid of a zombie process.
AC_DEFUN(BASH_SYS_PGRP_SYNC,
[AC_REQUIRE([AC_FUNC_GETPGRP])
AC_MSG_CHECKING(whether pgrps need synchronization)
AC_CACHE_VAL(bash_cv_pgrp_pipe,
[AC_TRY_RUN([
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
main()
{
# ifdef GETPGRP_VOID
# define getpgID() getpgrp()
# else
# define getpgID() getpgrp(0)
# define setpgid(x,y) setpgrp(x,y)
# endif
int pid1, pid2, fds[2];
int status;
char ok;
switch (pid1 = fork()) {
case -1:
exit(1);
case 0:
setpgid(0, getpid());
exit(0);
}
setpgid(pid1, pid1);
sleep(2); /* let first child die */
if (pipe(fds) < 0)
exit(2);
switch (pid2 = fork()) {
case -1:
exit(3);
case 0:
setpgid(0, pid1);
ok = getpgID() == pid1;
write(fds[1], &ok, 1);
exit(0);
}
setpgid(pid2, pid1);
close(fds[1]);
if (read(fds[0], &ok, 1) != 1)
exit(4);
wait(&status);
wait(&status);
exit(ok ? 0 : 5);
}
], bash_cv_pgrp_pipe=no,bash_cv_pgrp_pipe=yes,
[AC_MSG_WARN(cannot check pgrp synchronization if cross compiling -- defaulting to no)
bash_cv_pgrp_pipe=no])
])
AC_MSG_RESULT($bash_cv_pgrp_pipe)
if test $bash_cv_pgrp_pipe = yes; then
AC_DEFINE(PGRP_PIPE)
fi
])
AC_DEFUN(BASH_SYS_REINSTALL_SIGHANDLERS,
[AC_REQUIRE([AC_TYPE_SIGNAL])
AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE])
AC_MSG_CHECKING([if signal handlers must be reinstalled when invoked])
AC_CACHE_VAL(bash_cv_must_reinstall_sighandlers,
[AC_TRY_RUN([
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
typedef RETSIGTYPE sigfunc();
int nsigint;
#ifdef HAVE_POSIX_SIGNALS
sigfunc *
set_signal_handler(sig, handler)
int sig;
sigfunc *handler;
{
struct sigaction act, oact;
act.sa_handler = handler;
act.sa_flags = 0;
sigemptyset (&act.sa_mask);
sigemptyset (&oact.sa_mask);
sigaction (sig, &act, &oact);
return (oact.sa_handler);
}
#else
#define set_signal_handler(s, h) signal(s, h)
#endif
RETSIGTYPE
sigint(s)
int s;
{
nsigint++;
}
main()
{
nsigint = 0;
set_signal_handler(SIGINT, sigint);
kill((int)getpid(), SIGINT);
kill((int)getpid(), SIGINT);
exit(nsigint != 2);
}
], bash_cv_must_reinstall_sighandlers=no, bash_cv_must_reinstall_sighandlers=yes,
[AC_MSG_WARN(cannot check signal handling if cross compiling -- defaulting to no)
bash_cv_must_reinstall_sighandlers=no]
)])
AC_MSG_RESULT($bash_cv_must_reinstall_sighandlers)
if test $bash_cv_must_reinstall_sighandlers = yes; then
AC_DEFINE(MUST_REINSTALL_SIGHANDLERS)
fi
])
dnl check that some necessary job control definitions are present
AC_DEFUN(BASH_SYS_JOB_CONTROL_MISSING,
[AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE])
AC_MSG_CHECKING(for presence of necessary job control definitions)
AC_CACHE_VAL(bash_cv_job_control_missing,
[AC_TRY_RUN([
#include <sys/types.h>
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <signal.h>
/* Add more tests in here as appropriate. */
main()
{
/* signal type */
#if !defined (HAVE_POSIX_SIGNALS) && !defined (HAVE_BSD_SIGNALS)
exit(1);
#endif
/* signals and tty control. */
#if !defined (SIGTSTP) || !defined (SIGSTOP) || !defined (SIGCONT)
exit (1);
#endif
/* process control */
#if !defined (WNOHANG) || !defined (WUNTRACED)
exit(1);
#endif
/* Posix systems have tcgetpgrp and waitpid. */
#if defined (_POSIX_VERSION) && !defined (HAVE_TCGETPGRP)
exit(1);
#endif
#if defined (_POSIX_VERSION) && !defined (HAVE_WAITPID)
exit(1);
#endif
/* Other systems have TIOCSPGRP/TIOCGPRGP and wait3. */
#if !defined (_POSIX_VERSION) && !defined (HAVE_WAIT3)
exit(1);
#endif
exit(0);
}], bash_cv_job_control_missing=present, bash_cv_job_control_missing=missing,
[AC_MSG_WARN(cannot check job control if cross-compiling -- defaulting to missing)
bash_cv_job_control_missing=missing]
)])
AC_MSG_RESULT($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 $bash_cv_sys_named_pipes = missing; then
AC_DEFINE(NAMED_PIPES_MISSING)
fi
])
AC_DEFUN(BASH_SYS_DEFAULT_MAIL_DIR,
[AC_MSG_CHECKING(for default mail directory)
AC_CACHE_VAL(bash_cv_mail_dir,
[if test -d /var/mail; then
bash_cv_mail_dir=/var/mail
elif test -d /var/spool/mail; then
bash_cv_mail_dir=/var/spool/mail
elif test -d /usr/mail; then
bash_cv_mail_dir=/usr/mail
elif test -d /usr/spool/mail; then
bash_cv_mail_dir=/usr/spool/mail
else
bash_cv_mail_dir=unknown
fi
])
AC_MSG_RESULT($bash_cv_mail_dir)
AC_DEFINE_UNQUOTED(DEFAULT_MAIL_DIRECTORY, "$bash_cv_mail_dir")
])
AC_DEFUN(BASH_HAVE_TIOCGWINSZ,
[AC_MSG_CHECKING(for TIOCGWINSZ in sys/ioctl.h)
AC_CACHE_VAL(bash_cv_tiocgwinsz_in_ioctl,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/ioctl.h>], [int x = TIOCGWINSZ;],
bash_cv_tiocgwinsz_in_ioctl=yes,bash_cv_tiocgwinsz_in_ioctl=no)])
AC_MSG_RESULT($bash_cv_tiocgwinsz_in_ioctl)
if test $bash_cv_tiocgwinsz_in_ioctl = yes; then
AC_DEFINE(GWINSZ_IN_SYS_IOCTL)
fi
])
AC_DEFUN(BASH_HAVE_TIOCSTAT,
[AC_MSG_CHECKING(for TIOCSTAT in sys/ioctl.h)
AC_CACHE_VAL(bash_cv_tiocstat_in_ioctl,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/ioctl.h>], [int x = TIOCSTAT;],
bash_cv_tiocstat_in_ioctl=yes,bash_cv_tiocstat_in_ioctl=no)])
AC_MSG_RESULT($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 $bash_cv_fionread_in_ioctl = yes; then
AC_DEFINE(FIONREAD_IN_SYS_IOCTL)
fi
])
dnl
dnl See if speed_t is declared in <sys/types.h>. Some versions of linux
dnl require a definition of speed_t each time <termcap.h> is included,
dnl but you can only get speed_t if you include <termios.h> (on some
dnl versions) or <sys/types.h> (on others).
dnl
AC_DEFUN(BASH_CHECK_SPEED_T,
[AC_MSG_CHECKING(for speed_t in sys/types.h)
AC_CACHE_VAL(bash_cv_speed_t_in_sys_types,
[AC_TRY_COMPILE([#include <sys/types.h>], [speed_t x;],
bash_cv_speed_t_in_sys_types=yes,bash_cv_speed_t_in_sys_types=no)])
AC_MSG_RESULT($bash_cv_speed_t_in_sys_types)
if test $bash_cv_speed_t_in_sys_types = yes; then
AC_DEFINE(SPEED_T_IN_SYS_TYPES)
fi
])
AC_DEFUN(BASH_CHECK_GETPW_FUNCS,
[AC_MSG_CHECKING(whether getpw functions are declared in pwd.h)
AC_CACHE_VAL(bash_cv_getpw_declared,
[AC_EGREP_CPP(getpwuid,
[
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <pwd.h>
],
bash_cv_getpw_declared=yes,bash_cv_getpw_declared=no)])
AC_MSG_RESULT($bash_cv_getpw_declared)
if test $bash_cv_getpw_declared = yes; then
AC_DEFINE(HAVE_GETPW_DECLS)
fi
])
AC_DEFUN(BASH_CHECK_DEV_FD,
[AC_MSG_CHECKING(whether /dev/fd is available)
AC_CACHE_VAL(bash_cv_dev_fd,
[if test -d /dev/fd && test -r /dev/fd/0; then
bash_cv_dev_fd=standard
elif test -d /proc/self/fd && test -r /proc/self/fd/0; then
bash_cv_dev_fd=whacky
else
bash_cv_dev_fd=absent
fi
])
AC_MSG_RESULT($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 if HPUX needs _KERNEL defined for RLIMIT_* definitions
dnl
AC_DEFUN(BASH_CHECK_KERNEL_RLIMIT,
[AC_MSG_CHECKING([whether $host_os needs _KERNEL for RLIMIT defines])
AC_CACHE_VAL(bash_cv_kernel_rlimit,
[AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/resource.h>
],
[
int f;
f = RLIMIT_DATA;
], bash_cv_kernel_rlimit=no,
[AC_TRY_COMPILE([
#include <sys/types.h>
#define _KERNEL
#include <sys/resource.h>
#undef _KERNEL
],
[
int f;
f = RLIMIT_DATA;
], bash_cv_kernel_rlimit=yes, bash_cv_kernel_rlimit=no)]
)])
AC_MSG_RESULT($bash_cv_kernel_rlimit)
if test $bash_cv_kernel_rlimit = yes; then
AC_DEFINE(RLIMIT_NEEDS_KERNEL)
fi
])
dnl
dnl Check for 64-bit off_t -- used for malloc alignment
dnl
dnl C does not allow duplicate case labels, so the compile will fail if
dnl sizeof(off_t) is > 4.
dnl
AC_DEFUN(BASH_CHECK_OFF_T_64,
[AC_CACHE_CHECK(for 64-bit off_t, bash_cv_off_t_64,
AC_TRY_COMPILE([
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
],[
switch (0) case 0: case (sizeof (off_t) <= 4):;
], bash_cv_off_t_64=no, bash_cv_off_t_64=yes))
if test $bash_cv_off_t_64 = yes; then
AC_DEFINE(HAVE_OFF_T_64)
fi])
AC_DEFUN(BASH_CHECK_RTSIGS,
[AC_MSG_CHECKING(for unusable real-time signals due to large values)
AC_CACHE_VAL(bash_cv_unusable_rtsigs,
[AC_TRY_RUN([
#include <sys/types.h>
#include <signal.h>
#ifndef NSIG
# define NSIG 64
#endif
main ()
{
int n_sigs = 2 * NSIG;
#ifdef SIGRTMIN
int rtmin = SIGRTMIN;
#else
int rtmin = 0;
#endif
exit(rtmin < n_sigs);
}], bash_cv_unusable_rtsigs=yes, bash_cv_unusable_rtsigs=no,
[AC_MSG_WARN(cannot check real-time signals if cross compiling -- defaulting to yes)
bash_cv_unusable_rtsigs=yes]
)])
AC_MSG_RESULT($bash_cv_unusable_rtsigs)
if test $bash_cv_unusable_rtsigs = yes; then
AC_DEFINE(UNUSABLE_RT_SIGNALS)
fi
])
dnl
dnl check for availability of multibyte characters and functions
dnl
AC_DEFUN(BASH_CHECK_MULTIBYTE,
[
AC_CHECK_HEADERS(wctype.h)
AC_CHECK_HEADERS(wchar.h)
AC_CHECK_HEADERS(langinfo.h)
AC_CHECK_FUNC(mbrtowc, AC_DEFINE(HAVE_MBRTOWC))
AC_CHECK_FUNC(mbsrtowcs, AC_DEFINE(HAVE_MBSRTOWCS))
AC_CHECK_FUNC(wcwidth, have_wcwidth=yes)
if test "$have_wcwidth" = yes; then
AC_DEFINE(HAVE_WCWIDTH)
AC_SUBST(WCWIDTH_OBJ,)
else
AC_SUBST(WCWIDTH_OBJ,wcwidth.o)
fi
AC_CACHE_CHECK([for mbstate_t], bash_cv_have_mbstate_t,
[AC_TRY_RUN([
#include <wchar.h>
int
main ()
{
mbstate_t ps;
return 0;
}], bash_cv_have_mbstate_t=yes, bash_cv_have_mbstate_t=no)])
if test $bash_cv_have_mbstate_t = yes; then
AC_DEFINE(HAVE_MBSTATE_T)
fi
AC_CACHE_CHECK([for nl_langinfo and CODESET], bash_cv_langinfo_codeset,
[AC_TRY_LINK(
[#include <langinfo.h>],
[char* cs = nl_langinfo(CODESET);],
bash_cv_langinfo_codeset=yes, bash_cv_langinfo_codeset=no)])
if test $bash_cv_langinfo_codeset = yes; then
AC_DEFINE(HAVE_LANGINFO_CODESET)
fi
])
dnl need: prefix exec_prefix libdir includedir CC TERMCAP_LIB
dnl require:
dnl AC_PROG_CC
dnl BASH_CHECK_LIB_TERMCAP
AC_DEFUN(RL_LIB_READLINE_VERSION,
[
AC_REQUIRE([BASH_CHECK_LIB_TERMCAP])
AC_MSG_CHECKING([version of installed readline library])
# What a pain in the ass this is.
# save cpp and ld options
_save_CFLAGS="$CFLAGS"
_save_LDFLAGS="$LDFLAGS"
_save_LIBS="$LIBS"
# Don't set ac_cv_rl_prefix if the caller has already assigned a value. This
# allows the caller to do something like $_rl_prefix=$withval if the user
# specifies --with-installed-readline=PREFIX as an argument to configure
if test -z "$ac_cv_rl_prefix"; then
test "x$prefix" = xNONE && ac_cv_rl_prefix=$ac_default_prefix || ac_cv_rl_prefix=${prefix}
fi
eval ac_cv_rl_includedir=${ac_cv_rl_prefix}/include
eval ac_cv_rl_libdir=${ac_cv_rl_prefix}/lib
LIBS="$LIBS -lreadline ${TERMCAP_LIB}"
CFLAGS="$CFLAGS -I${ac_cv_rl_includedir}"
LDFLAGS="$LDFLAGS -L${ac_cv_rl_libdir}"
AC_TRY_RUN([
#include <stdio.h>
#include <readline/readline.h>
main()
{
FILE *fp;
fp = fopen("conftest.rlv", "w");
if (fp == 0) exit(1);
fprintf(fp, "%s\n", rl_library_version ? rl_library_version : "0.0");
fclose(fp);
exit(0);
}
],
ac_cv_rl_version=`cat conftest.rlv`,
ac_cv_rl_version='0.0',
ac_cv_rl_version='4.2')
CFLAGS="$_save_CFLAGS"
LDFLAGS="$_save_LDFLAGS"
LIBS="$_save_LIBS"
RL_MAJOR=0
RL_MINOR=0
# (
case "$ac_cv_rl_version" in
2*|3*|4*|5*|6*|7*|8*|9*)
RL_MAJOR=`echo $ac_cv_rl_version | sed 's:\..*$::'`
RL_MINOR=`echo $ac_cv_rl_version | sed -e 's:^.*\.::' -e 's:[[a-zA-Z]]*$::'`
;;
esac
# (((
case $RL_MAJOR in
[[0-9][0-9]]) _RL_MAJOR=$RL_MAJOR ;;
[[0-9]]) _RL_MAJOR=0$RL_MAJOR ;;
*) _RL_MAJOR=00 ;;
esac
# (((
case $RL_MINOR in
[[0-9][0-9]]) _RL_MINOR=$RL_MINOR ;;
[[0-9]]) _RL_MINOR=0$RL_MINOR ;;
*) _RL_MINOR=00 ;;
esac
RL_VERSION="0x${_RL_MAJOR}${_RL_MINOR}"
# Readline versions greater than 4.2 have these defines in readline.h
if test $ac_cv_rl_version = '0.0' ; then
AC_MSG_WARN([Could not test version of installed readline library.])
elif test $RL_MAJOR -gt 4 || { test $RL_MAJOR = 4 && test $RL_MINOR -gt 2 ; } ; then
# set these for use by the caller
RL_PREFIX=$ac_cv_rl_prefix
RL_LIBDIR=$ac_cv_rl_libdir
RL_INCLUDEDIR=$ac_cv_rl_includedir
AC_MSG_RESULT($ac_cv_rl_version)
else
AC_DEFINE_UNQUOTED(RL_READLINE_VERSION, $RL_VERSION, [encoded version of the installed readline library])
AC_DEFINE_UNQUOTED(RL_VERSION_MAJOR, $RL_MAJOR, [major version of installed readline library])
AC_DEFINE_UNQUOTED(RL_VERSION_MINOR, $RL_MINOR, [minor version of installed readline library])
AC_SUBST(RL_VERSION)
AC_SUBST(RL_MAJOR)
AC_SUBST(RL_MINOR)
# set these for use by the caller
RL_PREFIX=$ac_cv_rl_prefix
RL_LIBDIR=$ac_cv_rl_libdir
RL_INCLUDEDIR=$ac_cv_rl_includedir
AC_MSG_RESULT($ac_cv_rl_version)
fi
])