dnl aclocal.m4 generated automatically by aclocal 1.4

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 acinclude.m4 -- Extra macros needed for GNU make.
dnl
dnl Automake will incorporate this into its generated aclocal.m4.

dnl ---------------------------------------------------------------------------
dnl Got this from the lynx 2.8 distribution.
dnl by T.E.Dickey <dickey@clark.net>
dnl and Jim Spath <jspath@mail.bcpl.lib.md.us>
dnl and Philippe De Muyter <phdm@macqel.be>
dnl
dnl Created: 1997/1/28
dnl Updated: 1997/12/23
dnl ---------------------------------------------------------------------------
dnl After checking for functions in the default $LIBS, make a further check
dnl for the functions that are netlib-related (these aren't always in the
dnl libc, etc., and have to be handled specially because there are conflicting
dnl and broken implementations.
dnl Common library requirements (in order):
dnl	-lresolv -lsocket -lnsl
dnl	-lnsl -lsocket
dnl	-lsocket
dnl	-lbsd
AC_DEFUN([CF_NETLIBS],[
cf_test_netlibs=no
AC_MSG_CHECKING(for network libraries)
AC_CACHE_VAL(cf_cv_netlibs,[
AC_MSG_RESULT(working...)
cf_cv_netlibs=""
cf_test_netlibs=yes
AC_CHECK_FUNCS(gethostname,,[
	CF_RECHECK_FUNC(gethostname,nsl,cf_cv_netlibs,[
		CF_RECHECK_FUNC(gethostname,socket,cf_cv_netlibs)])])
#
# FIXME:  sequent needs this library (i.e., -lsocket -linet -lnsl), but
# I don't know the entrypoints - 97/7/22 TD
AC_CHECK_LIB(inet,main,cf_cv_netlibs="-linet $cf_cv_netlibs")
#
if test "$ac_cv_func_lsocket" != no ; then
AC_CHECK_FUNCS(socket,,[
	CF_RECHECK_FUNC(socket,socket,cf_cv_netlibs,[
		CF_RECHECK_FUNC(socket,bsd,cf_cv_netlibs)])])
fi
#
AC_CHECK_FUNCS(gethostbyname,,[
	CF_RECHECK_FUNC(gethostbyname,nsl,cf_cv_netlibs)])
#
AC_CHECK_FUNCS(strcasecmp,,[
	CF_RECHECK_FUNC(strcasecmp,resolv,cf_cv_netlibs)])
])
LIBS="$LIBS $cf_cv_netlibs"
test $cf_test_netlibs = no && echo "$cf_cv_netlibs" >&AC_FD_MSG
])dnl
dnl ---------------------------------------------------------------------------
dnl Re-check on a function to see if we can pick it up by adding a library.
dnl	$1 = function to check
dnl	$2 = library to check in
dnl	$3 = environment to update (e.g., $LIBS)
dnl	$4 = what to do if this fails
dnl
dnl This uses 'unset' if the shell happens to support it, but leaves the
dnl configuration variable set to 'unknown' if not.  This is a little better
dnl than the normal autoconf test, which gives misleading results if a test
dnl for the function is made (e.g., with AC_CHECK_FUNC) after this macro is
dnl used (autoconf does not distinguish between a null token and one that is
dnl set to 'no').
AC_DEFUN([CF_RECHECK_FUNC],[
AC_CHECK_LIB($2,$1,[
	CF_UPPER(cf_tr_func,$1)
	AC_DEFINE_UNQUOTED(HAVE_$cf_tr_func)
	ac_cv_func_$1=yes
	$3="-l$2 [$]$3"],[
	ac_cv_func_$1=unknown
	unset ac_cv_func_$1 2>/dev/null
	$4],
	[[$]$3])
])dnl
dnl ---------------------------------------------------------------------------
dnl Make an uppercase version of a variable
dnl $1=uppercase($2)
AC_DEFUN([CF_UPPER],
[
changequote(,)dnl
$1=`echo $2 | tr '[a-z]' '[A-Z]'`
changequote([,])dnl
])dnl

dnl ---------------------------------------------------------------------------
dnl Got this from the GNU tar 1.13.11 distribution
dnl by Paul Eggert <eggert@twinsun.com>
dnl ---------------------------------------------------------------------------

dnl By default, many hosts won't let programs access large files;
dnl one must use special compiler options to get large-file access to work.
dnl For more details about this brain damage please see:
dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html

dnl Written by Paul Eggert <eggert@twinsun.com>.

dnl Internal subroutine of AC_SYS_LARGEFILE.
dnl AC_SYS_LARGEFILE_FLAGS(FLAGSNAME)
AC_DEFUN(AC_SYS_LARGEFILE_FLAGS,
  [AC_CACHE_CHECK([for $1 value to request large file support],
     ac_cv_sys_largefile_$1,
     [ac_cv_sys_largefile_$1=`($GETCONF LFS_$1) 2>/dev/null` || {
	ac_cv_sys_largefile_$1=no
	ifelse($1, CFLAGS,
	  [case "$host_os" in
	   # HP-UX 10.20 requires -D__STDC_EXT__ with gcc 2.95.1.
changequote(, )dnl
	   hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
changequote([, ])dnl
	     if test "$GCC" = yes; then
	       ac_cv_sys_largefile_CFLAGS=-D__STDC_EXT__
	     fi
	     ;;
	   # IRIX 6.2 and later require cc -n32.
changequote(, )dnl
	   irix6.[2-9]* | irix6.1[0-9]* | irix[7-9].* | irix[1-9][0-9]*)
changequote([, ])dnl
	     if test "$GCC" != yes; then
	       ac_cv_sys_largefile_CFLAGS=-n32
	     fi
	   esac
	   if test "$ac_cv_sys_largefile_CFLAGS" != no; then
	     ac_save_CC="$CC"
	     CC="$CC $ac_cv_sys_largefile_CFLAGS"
	     AC_TRY_LINK(, , , ac_cv_sys_largefile_CFLAGS=no)
	     CC="$ac_save_CC"
	   fi])
      }])])

dnl Internal subroutine of AC_SYS_LARGEFILE.
dnl AC_SYS_LARGEFILE_SPACE_APPEND(VAR, VAL)
AC_DEFUN(AC_SYS_LARGEFILE_SPACE_APPEND,
  [case $2 in
   no) ;;
   ?*)
     case "[$]$1" in
     '') $1=$2 ;;
     *) $1=[$]$1' '$2 ;;
     esac ;;
   esac])

dnl Internal subroutine of AC_SYS_LARGEFILE.
dnl AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, CACHE-VAR, COMMENT, CODE-TO-SET-DEFAULT)
AC_DEFUN(AC_SYS_LARGEFILE_MACRO_VALUE,
  [AC_CACHE_CHECK([for $1], $2,
     [$2=no
changequote(, )dnl
      $4
      for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do
	case "$ac_flag" in
	-D$1)
	  $2=1 ;;
	-D$1=*)
	  $2=`expr " $ac_flag" : '[^=]*=\(.*\)'` ;;
	esac
      done
changequote([, ])dnl
      ])
   if test "[$]$2" != no; then
     AC_DEFINE_UNQUOTED([$1], [$]$2, [$3])
   fi])

AC_DEFUN(AC_SYS_LARGEFILE,
  [AC_REQUIRE([AC_CANONICAL_HOST])
   AC_ARG_ENABLE(largefile,
     [  --disable-largefile     omit support for large files])
   if test "$enable_largefile" != no; then
     AC_CHECK_TOOL(GETCONF, getconf)
     AC_SYS_LARGEFILE_FLAGS(CFLAGS)
     AC_SYS_LARGEFILE_FLAGS(LDFLAGS)
     AC_SYS_LARGEFILE_FLAGS(LIBS)

     for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do
       case "$ac_flag" in
       no) ;;
       -D_FILE_OFFSET_BITS=*) ;;
       -D_LARGEFILE_SOURCE | -D_LARGEFILE_SOURCE=*) ;;
       -D_LARGE_FILES | -D_LARGE_FILES=*) ;;
       -D?* | -I?*)
	 AC_SYS_LARGEFILE_SPACE_APPEND(CPPFLAGS, "$ac_flag") ;;
       *)
	 AC_SYS_LARGEFILE_SPACE_APPEND(CFLAGS, "$ac_flag") ;;
       esac
     done
     AC_SYS_LARGEFILE_SPACE_APPEND(LDFLAGS, "$ac_cv_sys_largefile_LDFLAGS")
     AC_SYS_LARGEFILE_SPACE_APPEND(LIBS, "$ac_cv_sys_largefile_LIBS")
     AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS,
       ac_cv_sys_file_offset_bits,
       [Number of bits in a file offset, on hosts where this is settable.],
       [case "$host_os" in
	# HP-UX 10.20 and later
	hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
	  ac_cv_sys_file_offset_bits=64 ;;
	esac])
     AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE,
       ac_cv_sys_largefile_source,
       [Define to make fseeko etc. visible, on some hosts.],
       [case "$host_os" in
	# HP-UX 10.20 and later
	hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
	  ac_cv_sys_largefile_source=1 ;;
	esac])
     AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES,
       ac_cv_sys_large_files,
       [Define for large files, on AIX-style hosts.],
       [case "$host_os" in
	# AIX 4.2 and later
	aix4.[2-9]* | aix4.1[0-9]* | aix[5-9].* | aix[1-9][0-9]*)
	  ac_cv_sys_large_files=1 ;;
	esac])
   fi
  ])


dnl ---------------------------------------------------------------------------
dnl From Paul Eggert <eggert@twinsun.com>

dnl Define HAVE_INTTYPES_H if <inttypes.h> exists,
dnl doesn't clash with <sys/types.h>, and declares uintmax_t.

AC_DEFUN(jm_AC_HEADER_INTTYPES_H,
[
  if test x = y; then
    dnl This code is deliberately never run via ./configure.
    dnl FIXME: this is a gross hack to make autoheader put an entry
    dnl for `HAVE_INTTYPES_H' in config.h.in.
    AC_CHECK_FUNCS(INTTYPES_H)
  fi
  AC_CACHE_CHECK([for inttypes.h], jm_ac_cv_header_inttypes_h,
  [AC_TRY_COMPILE(
    [#include <sys/types.h>
#include <inttypes.h>],
    [uintmax_t i = (uintmax_t) -1;],
    jm_ac_cv_header_inttypes_h=yes,
    jm_ac_cv_header_inttypes_h=no)])
  if test $jm_ac_cv_header_inttypes_h = yes; then
    ac_kludge=HAVE_INTTYPES_H
    AC_DEFINE_UNQUOTED($ac_kludge)
  fi
])


dnl ---------------------------------------------------------------------------
dnl From Paul Eggert <eggert@twinsun.com>

AC_DEFUN(AC_STRUCT_ST_MTIM_NSEC,
 [AC_CACHE_CHECK([for nanoseconds member of struct stat.st_mtim],
   ac_cv_struct_st_mtim_nsec,
   [ac_save_CPPFLAGS="$CPPFLAGS"
    ac_cv_struct_st_mtim_nsec=no
    # tv_nsec -- the usual case
    # _tv_nsec -- Solaris 2.6, if
    #	(defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1
    #	 && !defined __EXTENSIONS__)
    # st__tim.tv_nsec -- UnixWare 2.1.2
    for ac_val in tv_nsec _tv_nsec st__tim.tv_nsec; do
      CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val"
      AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/stat.h>], [struct stat s; s.st_mtim.ST_MTIM_NSEC;],
        [ac_cv_struct_st_mtim_nsec=$ac_val; break])
    done
    CPPFLAGS="$ac_save_CPPFLAGS"])

  if test $ac_cv_struct_st_mtim_nsec != no; then
    AC_DEFINE_UNQUOTED(ST_MTIM_NSEC, $ac_cv_struct_st_mtim_nsec)
  fi
 ]
)

dnl ---------------------------------------------------------------------------
dnl From Paul Eggert <eggert@twinsun.com>

dnl Define uintmax_t to `unsigned long' or `unsigned long long'
dnl if <inttypes.h> does not exist.

AC_DEFUN(jm_AC_TYPE_UINTMAX_T,
[
  AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
  if test $jm_ac_cv_header_inttypes_h = no; then
    AC_CACHE_CHECK([for unsigned long long], ac_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;],
      ac_cv_type_unsigned_long_long=yes,
      ac_cv_type_unsigned_long_long=no)])
    if test $ac_cv_type_unsigned_long_long = yes; then
      AC_DEFINE(uintmax_t, unsigned long long)
    else
      AC_DEFINE(uintmax_t, unsigned long)
    fi
  fi
])


dnl ---------------------------------------------------------------------------
dnl From Steve Robbins <steve@nyongwa.montreal.qc.ca>

dnl From a proposed change made on the autoconf list on 2 Feb 1999
dnl http://sourceware.cygnus.com/ml/autoconf/1999-02/msg00001.html
dnl Patch for AIX 3.2 by Lars Hecking <lhecking@nmrc.ucc.ie> on 17 May 1999

AC_DEFUN(AC_FUNC_SELECT,
[AC_CHECK_FUNCS(select)
if test "$ac_cv_func_select" = yes; then
  AC_CHECK_HEADERS(unistd.h sys/types.h sys/time.h sys/select.h sys/socket.h)
  AC_MSG_CHECKING([argument types of select()])
  AC_CACHE_VAL(ac_cv_type_fd_set_size_t,dnl
    [AC_CACHE_VAL(ac_cv_type_fd_set,dnl
      [for ac_cv_type_fd_set in 'fd_set' 'int' 'void'; do
        for ac_cv_type_fd_set_size_t in 'int' 'size_t' 'unsigned long' 'unsigned'; do
          for ac_type_timeval in 'struct timeval' 'const struct timeval'; do
            AC_TRY_COMPILE(dnl
[#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif],
[#ifdef __STDC__
extern select ($ac_cv_type_fd_set_size_t,
 $ac_cv_type_fd_set *,  $ac_cv_type_fd_set *, $ac_cv_type_fd_set *,
 $ac_type_timeval *);
#else
extern select ();
  $ac_cv_type_fd_set_size_t s;
  $ac_cv_type_fd_set *p;
  $ac_type_timeval *t;
#endif],
[ac_found=yes ; break 3],ac_found=no)
          done
        done
      done
    ])dnl AC_CACHE_VAL
  ])dnl AC_CACHE_VAL
  if test "$ac_found" = no; then
    AC_MSG_ERROR([can't determine argument types])
  fi

  AC_MSG_RESULT([select($ac_cv_type_fd_set_size_t,$ac_cv_type_fd_set *,...)])
  AC_DEFINE_UNQUOTED(fd_set_size_t, $ac_cv_type_fd_set_size_t)
  ac_cast=
  if test "$ac_cv_type_fd_set" != fd_set; then
    # Arguments 2-4 are not fd_set.  Some weirdo systems use fd_set type for
    # FD_SET macros, but insist that you cast the argument to select.  I don't
    # understand why that might be, but it means we cannot define fd_set.
    AC_EGREP_CPP(dnl
changequote(<<,>>)dnl
<<(^|[^a-zA-Z_0-9])fd_set[^a-zA-Z_0-9]>>dnl
changequote([,]),dnl
[#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif],dnl
    # We found fd_set type in a header, need special cast
    ac_cast="($ac_cv_type_fd_set *)",dnl
    # No fd_set type; it is safe to define it
    AC_DEFINE_UNQUOTED(fd_set,$ac_cv_type_fd_set))
  fi
  AC_DEFINE_UNQUOTED(SELECT_FD_SET_CAST,$ac_cast)
fi
])


# The following is taken from automake 1.4,
# except that it prefers the compiler option -Ae to "-Aa -D_HPUX_SOURCE"
# because only the former supports 64-bit integral types on HP-UX 10.20.


# serial 2

# @defmac AC_PROG_CC_STDC
# @maindex PROG_CC_STDC
# @ovindex CC
# If the C compiler in not in ANSI C mode by default, try to add an option
# to output variable @code{CC} to make it so.  This macro tries various
# options that select ANSI C on some system or another.  It considers the
# compiler to be in ANSI C mode if it handles function prototypes correctly.
#
# If you use this macro, you should check after calling it whether the C
# compiler has been set to accept ANSI C; if not, the shell variable
# @code{am_cv_prog_cc_stdc} is set to @samp{no}.  If you wrote your source
# code in ANSI C, you can make an un-ANSIfied copy of it by using the
# program @code{ansi2knr}, which comes with Ghostscript.
# @end defmac

AC_DEFUN(AM_PROG_CC_STDC,
[AC_REQUIRE([AC_PROG_CC])
AC_BEFORE([$0], [AC_C_INLINE])
AC_BEFORE([$0], [AC_C_CONST])
dnl Force this before AC_PROG_CPP.  Some cpp's, eg on HPUX, require
dnl a magic option to avoid problems with ANSI preprocessor commands
dnl like #elif.
dnl FIXME: can't do this because then AC_AIX won't work due to a
dnl circular dependency.
dnl AC_BEFORE([$0], [AC_PROG_CPP])
AC_MSG_CHECKING(for ${CC-cc} option to accept ANSI C)
AC_CACHE_VAL(am_cv_prog_cc_stdc,
[am_cv_prog_cc_stdc=no
ac_save_CC="$CC"
# Don't try gcc -ansi; that turns off useful extensions and
# breaks some systems' header files.
# AIX			-qlanglvl=ansi
# Ultrix and OSF/1	-std1
# HP-UX			-Aa -D_HPUX_SOURCE
# SVR4			-Xc -D__EXTENSIONS__
for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
do
  CC="$ac_save_CC $ac_arg"
  AC_TRY_COMPILE(
[#include <stdarg.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
struct buf { int x; };
FILE * (*rcsopen) (struct buf *, struct stat *, int);
static char *e (p, i)
     char **p;
     int i;
{
  return p[i];
}
static char *f (char * (*g) (char **, int), char **p, ...)
{
  char *s;
  va_list v;
  va_start (v,p);
  s = g (p, va_arg (v,int));
  va_end (v);
  return s;
}
int test (int i, double x);
struct s1 {int (*f) (int a);};
struct s2 {int (*f) (double a);};
int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
int argc;
char **argv;
], [
return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
],
[am_cv_prog_cc_stdc="$ac_arg"; break])
done
CC="$ac_save_CC"
])
if test -z "$am_cv_prog_cc_stdc"; then
  AC_MSG_RESULT([none needed])
else
  AC_MSG_RESULT($am_cv_prog_cc_stdc)
fi
case "x$am_cv_prog_cc_stdc" in
  x|xno) ;;
  *) CC="$CC $am_cv_prog_cc_stdc" ;;
esac
])

# Do all the work for Automake.  This macro actually does too much --
# some checks are only needed if your package does certain things.
# But this isn't really a big deal.

# serial 1

dnl Usage:
dnl AM_INIT_AUTOMAKE(package,version, [no-define])

AC_DEFUN(AM_INIT_AUTOMAKE,
[AC_REQUIRE([AC_PROG_INSTALL])
PACKAGE=[$1]
AC_SUBST(PACKAGE)
VERSION=[$2]
AC_SUBST(VERSION)
dnl test to see if srcdir already configured
if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
  AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
fi
ifelse([$3],,
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
AC_REQUIRE([AM_SANITY_CHECK])
AC_REQUIRE([AC_ARG_PROGRAM])
dnl FIXME This is truly gross.
missing_dir=`cd $ac_aux_dir && pwd`
AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
AC_REQUIRE([AC_PROG_MAKE_SET])])

#
# Check to make sure that the build environment is sane.
#

AC_DEFUN(AM_SANITY_CHECK,
[AC_MSG_CHECKING([whether build environment is sane])
# Just in case
sleep 1
echo timestamp > conftestfile
# Do `set' in a subshell so we don't clobber the current shell's
# arguments.  Must try -L first in case configure is actually a
# symlink; some systems play weird games with the mod time of symlinks
# (eg FreeBSD returns the mod time of the symlink's containing
# directory).
if (
   set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
   if test "[$]*" = "X"; then
      # -L didn't work.
      set X `ls -t $srcdir/configure conftestfile`
   fi
   if test "[$]*" != "X $srcdir/configure conftestfile" \
      && test "[$]*" != "X conftestfile $srcdir/configure"; then

      # If neither matched, then we have a broken ls.  This can happen
      # if, for instance, CONFIG_SHELL is bash and it inherits a
      # broken ls alias from the environment.  This has actually
      # happened.  Such a system could not be considered "sane".
      AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
alias in your environment])
   fi

   test "[$]2" = conftestfile
   )
then
   # Ok.
   :
else
   AC_MSG_ERROR([newly created file is older than distributed files!
Check your system clock])
fi
rm -f conftest*
AC_MSG_RESULT(yes)])

dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
dnl The program must properly implement --version.
AC_DEFUN(AM_MISSING_PROG,
[AC_MSG_CHECKING(for working $2)
# Run test in a subshell; some versions of sh will print an error if
# an executable is not found, even if stderr is redirected.
# Redirect stdin to placate older versions of autoconf.  Sigh.
if ($2 --version) < /dev/null > /dev/null 2>&1; then
   $1=$2
   AC_MSG_RESULT(found)
else
   $1="$3/missing $2"
   AC_MSG_RESULT(missing)
fi
AC_SUBST($1)])

# Like AC_CONFIG_HEADER, but automatically create stamp file.

AC_DEFUN(AM_CONFIG_HEADER,
[AC_PREREQ([2.12])
AC_CONFIG_HEADER([$1])
dnl When config.status generates a header, we must update the stamp-h file.
dnl This file resides in the same directory as the config header
dnl that is generated.  We must strip everything past the first ":",
dnl and everything past the last "/".
AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
<<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
<<am_indx=1
for am_file in <<$1>>; do
  case " <<$>>CONFIG_HEADERS " in
  *" <<$>>am_file "*<<)>>
    echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
    ;;
  esac
  am_indx=`expr "<<$>>am_indx" + 1`
done<<>>dnl>>)
changequote([,]))])

