aclocal.m4

LFS.This is a kind of file system.

dnl aclocal.m4 generated automatically by aclocal 1.4-p4

dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
dnl PARTICULAR PURPOSE.

dnl $Id: acinclude.m4,v 1.3 2001/04/16 04:07:48 dm Exp $
dnl
dnl Find full path to program
dnl
AC_DEFUN(SFS_PATH_PROG,
[AC_PATH_PROG(PATH_[]translit($1, [a-z], [A-Z]), $1,,
$2[]ifelse($2,,,:)/usr/bin:/bin:/sbin:/usr/sbin:/usr/etc:/usr/libexec:/usr/ucb:/usr/bsd:/usr/5bin:$PATH:/usr/local/bin:/usr/local/sbin:/usr/X11R6/bin)
if test "$PATH_[]translit($1, [a-z], [A-Z])"; then
    AC_DEFINE_UNQUOTED(PATH_[]translit($1, [a-z], [A-Z]),
		       "$PATH_[]translit($1, [a-z], [A-Z])",
			Full path of $1 command)
fi])
dnl
dnl File path to cpp
dnl
AC_DEFUN(SFS_PATH_CPP,
[AC_PATH_PROG(_PATH_CPP, cpp,,
/usr/ccs/bin:/usr/bin:/bin:/sbin:/usr/sbin:/usr/etc:/usr/libexec:/lib:/usr/lib:/usr/ucb:/usr/bsd:/usr/5bin:$PATH:/usr/local/bin:/usr/local/sbin:/usr/X11R6/bin)
if test -z "$_PATH_CPP"; then
    if test "$GCC" = yes; then
	_PATH_CPP=`$CC -print-prog-name=cpp`
    else
	_PATH_CPP=`gcc -print-prog-name=cpp 2> /dev/null`
    fi
fi
test -x "$_PATH_CPP" || unset _PATH_CPP
if test -z "$_PATH_CPP"; then
    AC_MSG_ERROR(Cannot find path for cpp)
fi
AC_DEFINE_UNQUOTED(PATH_CPP, "$_PATH_CPP",
			Path for the C preprocessor command)
])
dnl
dnl Check for declarations
dnl
AC_DEFUN(SFS_CHECK_DECL,
[AC_CACHE_CHECK(for a declaration of $1, sfs_cv_$1_decl,
    for hdr in [patsubst(builtin(shift, $@), [,], [ ])]; do
	if test -z "${sfs_cv_$1_decl}"; then
	    AC_HEADER_EGREP($1, $hdr, sfs_cv_$1_decl=yes)
	fi
    done
    test -z "${sfs_cv_$1_decl+set}" && sfs_cv_$1_decl=no)
if test "$sfs_cv_$1_decl" = no; then
	AC_DEFINE_UNQUOTED(NEED_[]translit($1, [a-z], [A-Z])_DECL, 1,
		Define if system headers do not declare $1.)
fi])
dnl
dnl Check if lsof keeps a device cache
dnl
AC_DEFUN(SFS_LSOF_DEVCACHE,
[if test "$PATH_LSOF"; then
    AC_CACHE_CHECK(if lsof supports a device cache, sfs_cv_lsof_devcache,
    if $PATH_LSOF -h 2>&1 | fgrep -e -D > /dev/null; then
	sfs_cv_lsof_devcache=yes
    else
	sfs_cv_lsof_devcache=no
    fi)
    if test "$sfs_cv_lsof_devcache" = yes; then
	AC_DEFINE(LSOF_DEVCACHE, 1,
		Define is lsof supports the -D option)
    fi
fi])
dnl
dnl Posix time subroutine
dnl
AC_DEFUN(SFS_TIME_CHECK,
[AC_CACHE_CHECK($3, sfs_cv_time_check_$1,
AC_TRY_COMPILE([
#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#elif defined (HAVE_SYS_TIME_H)
# include <sys/time.h>
#else /* !TIME_WITH_SYS_TIME && !HAVE_SYS_TIME_H */
# include <time.h>
#endif /* !TIME_WITH_SYS_TIME && !HAVE_SYS_TIME_H */
], $2, sfs_cv_time_check_$1=yes, sfs_cv_time_check_$1=no))
if test "$sfs_cv_time_check_$1" = yes; then
	AC_DEFINE($1, 1, $4)
fi])
dnl
dnl Posix time stuff
dnl
AC_DEFUN(SFS_TIMESPEC,
[AC_CHECK_HEADERS(sys/time.h)
AC_HEADER_TIME
AC_CHECK_FUNCS(clock_gettime)
SFS_TIME_CHECK(HAVE_CLOCK_GETTIME_DECL,
		int (*x) () = &clock_gettime;,
		for a declaration of clock_gettime,
		Define if system headers declare clock_gettime.)
SFS_TIME_CHECK(HAVE_TIMESPEC,
		int x = sizeof (struct timespec),
		for struct timespec,
		Define if sys/time.h defines a struct timespec.)
dnl AC_EGREP_HEADER(clock_gettime, sys/time.h,
dnl 	AC_DEFINE(HAVE_CLOCK_GETTIME_DECL, 1,
dnl 	Define if system header files declare clock_gettime.))
dnl AC_EGREP_HEADER(timespec, sys/time.h,
dnl 	AC_DEFINE(HAVE_TIMESPEC, 1,
dnl 		  Define if sys/time.h defines a struct timespec.))
])
dnl
dnl Find the crypt function
dnl
AC_DEFUN(SFS_FIND_CRYPT,
[AC_SUBST(LIBCRYPT)
AC_CHECK_FUNC(crypt)
if test $ac_cv_func_crypt = no; then
	AC_CHECK_LIB(crypt, crypt, LIBCRYPT="-lcrypt")
fi
])
dnl
dnl Find pty functions
dnl
AC_DEFUN(SFS_PTYLIB,
[AC_SUBST(PTYLIB)
AC_CHECK_FUNCS(_getpty)
AC_CHECK_FUNCS(openpty)
if test $ac_cv_func_openpty = no; then
	AC_CHECK_LIB(util, openpty, PTYLIB="-lutil"
		AC_DEFINE(HAVE_OPENPTY, 1,
			Define if you have the openpty function.)
		AC_CHECK_HEADERS(util.h libutil.h))
fi

AC_MSG_CHECKING(for pseudo ttys)
if test -c /dev/ptmx && test -c /dev/pts/0
then
  AC_DEFINE(HAVE_DEV_PTMX, 1,
	    Define if you have SYSV-style /dev/ptmx and /dev/pts/.)
  AC_MSG_RESULT(streams ptys)
else
if test -c /dev/pts && test -c /dev/ptc
then
  AC_DEFINE(HAVE_DEV_PTS_AND_PTC, 1,
	    Define if you have /dev/pts and /dev/ptc devices (as in AIX).)
  AC_MSG_RESULT(/dev/pts and /dev/ptc)
else
  AC_MSG_RESULT(bsd-style ptys)
fi
fi])
dnl
dnl Use -lresolv only if we need it
dnl
AC_DEFUN(SFS_FIND_RESOLV,
[AC_CHECK_FUNC(res_mkquery)
if test "$ac_cv_func_res_mkquery" != yes; then
	AC_CHECK_LIB(resolv, res_mkquery)
fi
dnl See if the resolv functions are actually declared
SFS_CHECK_DECL(res_init, resolv.h)
SFS_CHECK_DECL(res_mkquery, resolv.h)
SFS_CHECK_DECL(dn_skipname, resolv.h)
SFS_CHECK_DECL(dn_expand, resolv.h)
])
dnl
dnl Check if first element in grouplist is egid
dnl
AC_DEFUN(SFS_CHECK_EGID_IN_GROUPLIST,
[AC_TYPE_GETGROUPS
AC_CACHE_CHECK(if egid is first element of grouplist, sfs_cv_egid_in_grouplist,
AC_TRY_RUN([changequote changequote([[,]])
#include <sys/types.h>
#include <unistd.h>
#include <netinet/in.h>
#include <rpc/rpc.h>

#include "confdefs.h"

static int
getint (void *_p)
{
  unsigned char *p = _p;
  return p[0]<<24 | p[1]<<16 | p[2]<<8 | p[3];
}

int
main (int argc, char **argv)
{
  AUTH *a;
  GETGROUPS_T gids[24];
  int n, xn;
  char buf[408];
  char *p;
  XDR x;

  /* Must hard-code OSes with egid in grouplist *and* broken RPC lib */
#if __FreeBSD__
  return 0;
#endif 

  n = getgroups (24, gids);
  if (n <= 0)
    return 1;

  a = authunix_create_default ();
  xdrmem_create (&x, buf, sizeof (buf), XDR_ENCODE);
  if (!auth_marshall (a, &x))
    return 1;

  if (getint (buf) != AUTH_UNIX)
    return 1;
  p = buf + 12;			/* Skip auth flavor, length, timestamp */
  p += getint (p) + 7 & ~3;	/* Skip machine name */
  p += 8;			/* Skip uid & gid */

  xn = getint (p);		/* Length of grouplist in auth_unix */

  return n != xn + 1;
}
changequote([,])],
	sfs_cv_egid_in_grouplist=yes, sfs_cv_egid_in_grouplist=no))
if test $sfs_cv_egid_in_grouplist = yes; then
	AC_DEFINE(HAVE_EGID_IN_GROUPLIST, 1,
	  Define if the first element of a grouplist is the effective gid)
fi])
dnl
dnl Check for wide select
dnl
AC_DEFUN(SFS_CHECK_WIDE_SELECT,
[AC_CACHE_CHECK(for wide select, sfs_cv_wideselect,
fdlim_h=${srcdir}/fdlim.h
test -f ${srcdir}/async/fdlim.h && fdlim_h=${srcdir}/async/fdlim.h
test -f ${srcdir}/libasync/fdlim.h && fdlim_h=${srcdir}/libasync/fdlim.h
AC_TRY_RUN([changequote changequote([[,]])
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include "${fdlim_h}"

struct timeval ztv;

int
main ()
{
  int pfd[2];
  int rfd, wfd;
  int maxfd;
  int i;
  fd_set *rfdsp, *wfdsp;

  maxfd = fdlim_get (1);
  fdlim_set (maxfd);
  maxfd = fdlim_get (0);
  if (maxfd <= FD_SETSIZE) {
    printf ("[small fd limit anyway] ");
    exit (1);
  }
  if (pipe (pfd) < 0)
    exit (1);

#ifdef F_DUPFD
  if ((rfd = fcntl (pfd[0], F_DUPFD, maxfd - 2)) < 0)
    exit (1);
  if ((wfd = fcntl (pfd[1], F_DUPFD, maxfd - 1)) < 0)
    exit (1);
#else /* !F_DUPFD */
  if ((rfd = dup2 (pfd[0], maxfd - 2)) < 0)
    exit (1);
  if ((wfd = dup2 (pfd[1], maxfd - 1)) < 0)
    exit (1);
#endif /* !F_DUPFD */

  rfdsp = malloc (1 + (maxfd/8));
  for (i = 0; i < 1 + (maxfd/8); i++)
    ((char *) rfdsp)[i] = '\0';
  wfdsp = malloc (1 + (maxfd/8));
  for (i = 0; i < 1 + (maxfd/8); i++)
    ((char *) wfdsp)[i] = '\0';

  FD_SET (rfd, rfdsp);
  FD_SET (wfd, wfdsp);
  if (select (maxfd, rfdsp, wfdsp, NULL, &ztv) < 0)
    exit (1);

  if (FD_ISSET (wfd, wfdsp) && !FD_ISSET (rfd, rfdsp))
    exit (0);
  else
    exit (1);
}
changequote([,])],
sfs_cv_wideselect=yes, sfs_cv_wideselect=no, sfs_cv_wideselect=no))
if test $sfs_cv_wideselect = yes; then
	AC_DEFINE(HAVE_WIDE_SELECT, 1,
		  Define if select can take file descriptors >= FD_SETSIZE)
fi])
dnl
dnl Check for 64-bit off_t
dnl
AC_DEFUN(SFS_CHECK_OFF_T_64,
[AC_CACHE_CHECK(for 64-bit off_t, sfs_cv_off_t_64,
AC_TRY_COMPILE([
#include <unistd.h>
#include <sys/types.h>
],[
switch (0) case 0: case (sizeof (off_t) <= 4):;
], sfs_cv_off_t_64=no, sfs_cv_off_t_64=yes))
if test $sfs_cv_off_t_64 = yes; then
	AC_DEFINE(HAVE_OFF_T_64, 1, Define if off_t is 64 bits wide.)
fi])
dnl
dnl Check for type
dnl
AC_DEFUN(SFS_CHECK_TYPE,
[AC_CACHE_CHECK(for $1, sfs_cv_type_$1,
AC_TRY_COMPILE([
#include <stddef.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#ifdef HAVE_RPC_RPC_H
#include <rpc/rpc.h>
#endif
],[
sizeof($1);
], sfs_cv_type_$1=yes, sfs_cv_type_$1=no))
if test $sfs_cv_type_$1 = yes; then
        AC_DEFINE(HAVE_[]translit($1, [a-z], [A-Z]), 1,
		  Define if system headers declare a $1 type.)
fi])
dnl
dnl Check for struct cmsghdr (for passing file descriptors)
dnl
AC_DEFUN(SFS_CHECK_FDPASS,
[
AC_CACHE_CHECK(for fd passing with msg_accrights in msghdr,
		sfs_cv_accrights,
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
struct msghdr mh;
mh.msg_accrights = 0;
], sfs_cv_accrights=yes, sfs_cv_accrights=no))

AC_CACHE_CHECK(for fd passing with struct cmsghdr, sfs_cv_cmsghdr,
if test "$sfs_cv_accrights" != "yes"; then
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
struct msghdr mh;
struct cmsghdr cmh;
mh.msg_control = (void *) &cmh;
], sfs_cv_cmsghdr=yes, sfs_cv_cmsghdr=no)
else
	sfs_cv_cmsghdr=no
fi)

if test $sfs_cv_accrights = yes; then
	AC_DEFINE(HAVE_ACCRIGHTS, 1,
	Define if msghdr has msg_accrights field for passing file descriptors.)
fi
if test $sfs_cv_cmsghdr = yes; then
	AC_DEFINE(HAVE_CMSGHDR, 1,
	Define if system has cmsghdr structure for passing file descriptors.)
fi])
dnl
dnl Check for sa_len in struct sockaddrs
dnl
AC_DEFUN(SFS_CHECK_SA_LEN,
[AC_CACHE_CHECK(for sa_len in struct sockaddr, sfs_cv_sa_len,
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
struct sockaddr sa;
sa.sa_len = 0;
], sfs_cv_sa_len=yes, sfs_cv_sa_len=no))
if test $sfs_cv_sa_len = yes; then
	AC_DEFINE(HAVE_SA_LEN, 1,
	Define if struct sockaddr has sa_len field.)
fi])
dnl
dnl Check something about the nfs_args field
dnl
AC_DEFUN(SFS_TRY_NFSARG_FIELD,
[AC_TRY_COMPILE([
#include "${srcdir}/nfsconf.h"
],[
struct nfs_args na;
$1;
], $2, $3)])
dnl
dnl Check a particular field in nfs_args
dnl
AC_DEFUN(SFS_CHECK_NFSMNT_FIELD,
[AC_CACHE_CHECK(for $1 in nfs_args structure, sfs_cv_nfsmnt_$1,
SFS_TRY_NFSARG_FIELD(na.$1, sfs_cv_nfsmnt_$1=yes, sfs_cv_nfsmnt_$1=no))
if test $sfs_cv_nfsmnt_$1 = yes; then
  AC_DEFINE(HAVE_NFSMNT_[]translit($1, [a-z], [A-Z]), 1,
	    Define if the nfs_args structure has a $1 field.)
fi])
dnl
dnl Check if nfs_args hostname field is an array
dnl
AC_DEFUN(SFS_CHECK_NFSARG_HOSTNAME_ARRAY,
[AC_CACHE_CHECK(if nfs_args hostname field is an array, sfs_cv_nfs_hostarray,
	SFS_TRY_NFSARG_FIELD(na.hostname = 0,
		sfs_cv_nfs_hostarray=no, sfs_cv_nfs_hostarray=yes))
if test $sfs_cv_nfs_hostarray = yes; then
  AC_DEFINE(HAVE_NFSARG_HOSTNAME_ARRAY)
fi])
dnl
dnl Check if addr field is a pointer or not
dnl
AC_DEFUN(SFS_CHECK_NFSARG_ADDR_PTR,
[AC_CHECK_HEADERS(tiuser.h)
AC_CACHE_CHECK(if nfs_args addr field is a pointer, sfs_cv_nfsmnt_addr_ptr,
	SFS_TRY_NFSARG_FIELD(na.addr = (void *) 0, sfs_cv_nfsmnt_addr_ptr=yes,
				sfs_cv_nfsmnt_addr_ptr=no))
if test $sfs_cv_nfsmnt_addr_ptr = yes; then
  AC_DEFINE(HAVE_NFSARG_ADDR_PTR)
  AC_CACHE_CHECK(if nfs_args addr is a netbuf *, sfs_cv_nfsmnt_addr_netbuf,
	SFS_TRY_NFSARG_FIELD(struct netbuf nb; *na.addr = nb,
	  sfs_cv_nfsmnt_addr_netbuf=yes, sfs_cv_nfsmnt_addr_netbuf=no))
  if test $sfs_cv_nfsmnt_addr_netbuf = yes; then
    AC_DEFINE(HAVE_NFSARG_ADDR_NETBUF)
  fi