aclocal.m4

A part of LFS.This is a server software.

dnl aclocal.m4 generated automatically by aclocal 1.4-p6

dnl Copyright (C) 1994, 1995-8, 1999, 2001 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 1.2 2004/02/20 14:26:09 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 How to get BSD-like df output
dnl
AC_DEFUN(SFS_PATH_DF,
[SFS_PATH_PROG(df, /usr/ucb:/usr/bsd:/usr/local/bin)
AC_CACHE_CHECK(if [$PATH_DF] needs -k for BSD-formatted output,
	sfs_cv_df_dash_k,
sfs_cv_df_dash_k=no
[test "`$PATH_DF . | sed -e '2,$d;/Mounted on/d'`" \
	&& test "`$PATH_DF -k . | sed -ne '2,$d;/Mounted on/p'`" \
	&& sfs_cv_df_dash_k=yes])
if test $sfs_cv_df_dash_k = yes; then
	AC_DEFINE(DF_NEEDS_DASH_K, 1,
	  Define if you must run \"df -k\" to get BSD-formatted output)
fi])
dnl
dnl Check for declarations
dnl SFS_CHECK_DECL(symbol, headers-to-try, headers-to-include)
dnl
AC_DEFUN(SFS_CHECK_DECL,
[AC_CACHE_CHECK(for a declaration of $1, sfs_cv_$1_decl,
dnl    for hdr in [patsubst(builtin(shift, $@), [,], [ ])]; do
    for hdr in $2; do
	if test -z "${sfs_cv_$1_decl}"; then
dnl	    AC_HEADER_EGREP($1, $hdr, sfs_cv_$1_decl=yes)
	    AC_TRY_COMPILE(
patsubst($3, [\([^ ]+\) *], [#include <\1>
])[#include <$hdr>], &$1;, 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 $ac_cv_func_openpty = no; then
	AC_CHECK_LIB(util, openpty, PTYLIB="-lutil"
		AC_DEFINE(HAVE_OPENPTY, 1,
			Define if you have the openpty function.))
fi
if test "$ac_cv_func_openpty" = yes -o "$ac_cv_lib_util_openpty" = yes; then
	AC_CHECK_HEADERS(util.h libutil.h)
fi
AC_CHECK_HEADERS(pty.h)

AC_CACHE_CHECK(for BSD-style utmp slots, ac_cv_have_ttyent,
	AC_EGREP_HEADER(getttyent, ttyent.h,
		ac_cv_have_ttyent=yes, ac_cv_have_ttyent=no))
if test "$ac_cv_have_ttyent" = yes; then
	AC_DEFINE(USE_TTYENT, 1,
	    Define if utmp must be managed with BSD-style ttyent functions)
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 "$ac_cv_func_res_mkquery" != yes; then
	AC_CHECK_LIB(resolv, res_mkquery)
	if test "$ac_cv_lib_resolv_res_mkquery" = no; then
		AC_CHECK_LIB(resolv, __res_mkquery)
	fi
fi
dnl See if the resolv functions are actually declared
SFS_CHECK_DECL(res_init, resolv.h,
	sys/types.h sys/socket.h netinet/in.h arpa/nameser.h)
SFS_CHECK_DECL(res_mkquery, resolv.h,
	sys/types.h sys/socket.h netinet/in.h arpa/nameser.h)
SFS_CHECK_DECL(dn_skipname, resolv.h,
	sys/types.h sys/socket.h netinet/in.h arpa/nameser.h)
SFS_CHECK_DECL(dn_expand, resolv.h,
	sys/types.h sys/socket.h netinet/in.h arpa/nameser.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 struct passwd fields
dnl
AC_DEFUN(SFS_PASSWD_FIELD,
[AC_CACHE_CHECK(for $1 in struct passwd, sfs_cv_passwd_$1,
AC_TRY_COMPILE([
#include <sys/types.h>
#include <pwd.h>
], [
   struct passwd *pw;
   pw->$1;
], sfs_cv_passwd_$1=yes, sfs_cv_passwd_$1=no))
if test "$sfs_cv_passwd_$1" = yes; then
        AC_DEFINE(HAVE_PASSWD_[]translit($1, [a-z ], [A-Z_]), 1,
		Define if struct passwd has $1 field)
fi])
dnl
dnl Check if putenv copies arguments
dnl
AC_DEFUN(SFS_PUTENV_COPY,
[AC_CACHE_CHECK(if putenv() copies its argument, sfs_cv_putenv_copy,
AC_TRY_RUN([
changequote`'changequote([[,]])
#include <stdlib.h>

char var[] = "V=0";

int
main (int argc, char **argv)
{
  char *v;

  putenv (var);
  var[2] = '1';
  v = getenv (var);
  return *v != '0';
}
changequote([,])],
	sfs_cv_putenv_copy=yes, sfs_cv_putenv_copy=no,
	sfs_cv_putenv_copy=no)
)
if test $sfs_cv_putenv_copy = yes; then
	AC_DEFINE(PUTENV_COPIES_ARGUMENT, 1,
		  Define if putenv makes a copy of its argument)
fi])
dnl
dnl Check for wide select
dnl
AC_DEFUN(SFS_CHECK_WIDE_SELECT,
[AC_CACHE_CHECK(for wide select, sfs_cv_wideselect,
fdlim_h=${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, 1);
  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

dnl [AC_CACHE_CHECK(for $1, sfs_cv_type_$1,
dnl ], sfs_cv_type_$1=yes, sfs_cv_type_$1=no))
dnl ], sfs_cv_type_[]translit($1, [ ], [_])=yes, sfs_cv_type_[]translit($1, [ ], [_])=no))

AC_DEFUN(SFS_CHECK_TYPE,
[AC_CACHE_CHECK(for $1, sfs_cv_type_[]translit($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