configure

  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_cxx_have_ext_hash_set=std
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_cv_cxx_have_ext_hash_set=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <ext/hash_set>
#ifdef HAVE_NAMESPACES
using namespace __gnu_cxx;
#endif
int
main ()
{
hash_set<int> t; return 0;
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_cxx_have_ext_hash_set=gnu
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_cv_cxx_have_ext_hash_set=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
  ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu


fi
echo "$as_me:$LINENO: result: $ac_cv_cxx_have_ext_hash_set" >&5
echo "${ECHO_T}$ac_cv_cxx_have_ext_hash_set" >&6
if test "$ac_cv_cxx_have_ext_hash_set" = std; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_STD_EXT_HASH_SET
_ACEOF

fi
if test "$ac_cv_cxx_have_ext_hash_set" = gnu; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_GNU_EXT_HASH_SET
_ACEOF

fi

echo "$as_me:$LINENO: checking whether the compiler has ext/slist" >&5
echo $ECHO_N "checking whether the compiler has ext/slist... $ECHO_C" >&6
if test "${ac_cv_cxx_have_ext_slist+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else



  ac_ext=cc
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_cxx_compiler_gnu

  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <ext/slist>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif
int
main ()
{
slist<int> s; return 0;
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_cxx_have_ext_slist=std
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_cv_cxx_have_ext_slist=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <ext/slist>
#ifdef HAVE_NAMESPACES
using namespace __gnu_cxx;
#endif
int
main ()
{
slist<int> s; return 0;
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_cxx_have_ext_slist=gnu
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_cv_cxx_have_ext_slist=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext

  ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu


fi
echo "$as_me:$LINENO: result: $ac_cv_cxx_have_ext_slist" >&5
echo "${ECHO_T}$ac_cv_cxx_have_ext_slist" >&6
if test "$ac_cv_cxx_have_ext_slist" = std; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_EXT_SLIST std
_ACEOF

fi
if test "$ac_cv_cxx_have_ext_slist" = gnu; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_EXT_SLIST gnu
_ACEOF

fi

echo "$as_me:$LINENO: checking whether the compiler has the standard iterator" >&5
echo $ECHO_N "checking whether the compiler has the standard iterator... $ECHO_C" >&6
if test "${ac_cv_cxx_have_std_iterator+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else



  ac_ext=cc
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_cxx_compiler_gnu

  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <iterator>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif
int
main ()
{
iterator<int,int,int> t; return 0;
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_cxx_have_std_iterator=yes
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_cv_cxx_have_std_iterator=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
  ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu


fi
echo "$as_me:$LINENO: result: $ac_cv_cxx_have_std_iterator" >&5
echo "${ECHO_T}$ac_cv_cxx_have_std_iterator" >&6
if test "$ac_cv_cxx_have_std_iterator" = yes; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_STD_ITERATOR
_ACEOF

fi

echo "$as_me:$LINENO: checking whether the compiler has the bidirectional iterator" >&5
echo $ECHO_N "checking whether the compiler has the bidirectional iterator... $ECHO_C" >&6
if test "${ac_cv_cxx_have_bi_iterator+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else



  ac_ext=cc
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_cxx_compiler_gnu

  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <iterator>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif
int
main ()
{
bidirectional_iterator<int,int> t; return 0;
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_cxx_have_bi_iterator=yes
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_cv_cxx_have_bi_iterator=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
  ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu


fi
echo "$as_me:$LINENO: result: $ac_cv_cxx_have_bi_iterator" >&5
echo "${ECHO_T}$ac_cv_cxx_have_bi_iterator" >&6
if test "$ac_cv_cxx_have_bi_iterator" = yes; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_BI_ITERATOR
_ACEOF

fi

echo "$as_me:$LINENO: checking whether the compiler has forward iterators" >&5
echo $ECHO_N "checking whether the compiler has forward iterators... $ECHO_C" >&6
if test "${ac_cv_cxx_have_fwd_iterator+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else



  ac_ext=cc
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_cxx_compiler_gnu

  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <iterator>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif
int
main ()
{
forward_iterator<int,int> t; return 0;
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_cxx_have_fwd_iterator=yes
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_cv_cxx_have_fwd_iterator=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
  ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu


fi
echo "$as_me:$LINENO: result: $ac_cv_cxx_have_fwd_iterator" >&5
echo "${ECHO_T}$ac_cv_cxx_have_fwd_iterator" >&6
if test "$ac_cv_cxx_have_fwd_iterator" = yes; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_FWD_ITERATOR
_ACEOF

fi


# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
# for constant arguments.  Useless!
echo "$as_me:$LINENO: checking for working alloca.h" >&5
echo $ECHO_N "checking for working alloca.h... $ECHO_C" >&6
if test "${ac_cv_working_alloca_h+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <alloca.h>
int
main ()
{
char *p = (char *) alloca (2 * sizeof (int));
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
  (eval $ac_link) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest$ac_exeext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_working_alloca_h=yes
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_cv_working_alloca_h=no
fi
rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: $ac_cv_working_alloca_h" >&5
echo "${ECHO_T}$ac_cv_working_alloca_h" >&6
if test $ac_cv_working_alloca_h = yes; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_ALLOCA_H 1
_ACEOF

fi

echo "$as_me:$LINENO: checking for alloca" >&5
echo $ECHO_N "checking for alloca... $ECHO_C" >&6
if test "${ac_cv_func_alloca_works+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#ifdef __GNUC__
# define alloca __builtin_alloca
#else
# ifdef _MSC_VER
#  include <malloc.h>
#  define alloca _alloca
# else
#  if HAVE_ALLOCA_H
#   include <alloca.h>
#  else
#   ifdef _AIX
 #pragma alloca
#   else
#    ifndef alloca /* predefined by HP cc +Olibcalls */
char *alloca ();
#    endif
#   endif
#  endif
# endif
#endif

int
main ()
{
char *p = (char *) alloca (1);
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
  (eval $ac_link) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest$ac_exeext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_func_alloca_works=yes
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_cv_func_alloca_works=no
fi
rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: $ac_cv_func_alloca_works" >&5
echo "${ECHO_T}$ac_cv_func_alloca_works" >&6

if test $ac_cv_func_alloca_works = yes; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_ALLOCA 1
_ACEOF

else
  # The SVR3 libPW and SVR4 libucb both contain incompatible functions
# that cause trouble.  Some versions do not even contain alloca or
# contain a buggy version.  If you still want to use their alloca,
# use ar to extract alloca.o from them instead of compiling alloca.c.

ALLOCA=alloca.$ac_objext

cat >>confdefs.h <<\_ACEOF
#define C_ALLOCA 1
_ACEOF


echo "$as_me:$LINENO: checking whether \`alloca.c' needs Cray hooks" >&5
echo $ECHO_N "checking whether \`alloca.c' needs Cray hooks... $ECHO_C" >&6
if test "${ac_cv_os_cray+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#if defined(CRAY) && ! defined(CRAY2)
webecray
#else
wenotbecray
#endif

_ACEOF
if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
  $EGREP "webecray" >/dev/null 2>&1; then
  ac_cv_os_cray=yes
else
  ac_cv_os_cray=no
fi
rm -f conftest*

fi
echo "$as_me:$LINENO: result: $ac_cv_os_cray" >&5
echo "${ECHO_T}$ac_cv_os_cray" >&6
if test $ac_cv_os_cray = yes; then
  for ac_func in _getb67 GETB67 getb67; do
    as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
echo "$as_me:$LINENO: checking for $ac_func" >&5
echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
if eval "test \"\${$as_ac_var+set}\" = set"; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
/* System header to define __stub macros and hopefully few prototypes,
    which can conflict with char $ac_func (); below.
    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
    <limits.h> exists even on freestanding compilers.  */
#ifdef __STDC__
# include <limits.h>
#else
# include <assert.h>
#endif
/* Override any gcc2 internal prototype to avoid an error.  */
#ifdef __cplusplus
extern "C"
{
#endif
/* We use char because int might match the return type of a gcc2
   builtin and then its argument prototype would still apply.  */
char $ac_func ();
/* The GNU C library defines this for functions which it implements
    to always fail with ENOSYS.  Some functions are actually named
    something starting with __ and the normal name is an alias.  */
#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
choke me
#else
char (*f) () = $ac_func;
#endif
#ifdef __cplusplus
}
#endif

int
main ()
{
return f != $ac_func;
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
  (eval $ac_link) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest$ac_exeext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  eval "$as_ac_var=yes"
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

eval "$as_ac_var=no"
fi
rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
if test `eval echo '${'$as_ac_var'}'` = yes; then

cat >>confdefs.h <<_ACEOF
#define CRAY_STACKSEG_END $ac_func
_ACEOF

    break
fi

  done
fi

echo "$as_me:$LINENO: checking stack direction for C alloca" >&5
echo $ECHO_N "checking stack direction for C alloca... $ECHO_C" >&6
if test "${ac_cv_c_stack_direction+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  if test "$cross_compiling" = yes; then
  ac_cv_c_stack_direction=0
else
  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
int
find_stack_direction ()
{
  static char *addr = 0;
  auto char dummy;
  if (addr == 0)
    {
      addr = &dummy;
      return find_stack_direction ();
    }
  else
    return (&dummy > addr) ? 1 : -1;
}

int
main ()
{
  exit (find_stack_direction () < 0);
}
_ACEOF
rm -f conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
  (eval $ac_link) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_c_stack_direction=1
else
  echo "$as_me: program exited with status $ac_status" >&5
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

( exit $ac_status )
ac_cv_c_stack_direction=-1
fi
rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
fi
fi
echo "$as_me:$LINENO: result: $ac_cv_c_stack_direction" >&5
echo "${ECHO_T}$ac_cv_c_stack_direction" >&6

cat >>confdefs.h <<_ACEOF
#define STACK_DIRECTION $ac_cv_c_stack_direction
_ACEOF


fi

if test $ac_cv_c_compiler_gnu = yes; then
    echo "$as_me:$LINENO: checking whether $CC needs -traditional" >&5
echo $ECHO_N "checking whether $CC needs -traditional... $ECHO_C" >&6
if test "${ac_cv_prog_gcc_traditional+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
    ac_pattern="Autoconf.*'x'"
  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <sgtty.h>
Autoconf TIOCGETP
_ACEOF
if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
  $EGREP "$ac_pattern" >/dev/null 2>&1; then
  ac_cv_prog_gcc_traditional=yes
else
  ac_cv_prog_gcc_traditional=no
fi
rm -f conftest*


  if test $ac_cv_prog_gcc_traditional = no; then
    cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <termio.h>
Autoconf TCGETA
_ACEOF
if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
  $EGREP "$ac_pattern" >/dev/null 2>&1; then
  ac_cv_prog_gcc_traditional=yes
fi
rm -f conftest*

  fi
fi
echo "$as_me:$LINENO: result: $ac_cv_prog_gcc_traditional" >&5
echo "${ECHO_T}$ac_cv_prog_gcc_traditional" >&6
  if test $ac_cv_prog_gcc_traditional = yes; then
    CC="$CC -traditional"
  fi
fi

echo "$as_me:$LINENO: checking for working memcmp" >&5
echo $ECHO_N "checking for working memcmp... $ECHO_C" >&6
if test "${ac_cv_func_memcmp_working+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  if test "$cross_compiling" = yes; then
  ac_cv_func_memcmp_working=no
else
  cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */

int
main ()
{

  /* Some versions of memcmp are not 8-bit clean.  */
  char c0 = 0x40, c1 = 0x80, c2 = 0x81;
  if (memcmp(&c0, &c2, 1) >= 0 || memcmp(&c1, &c2, 1) >= 0)
    exit (1);

  /* The Next x86 OpenStep bug shows up only when comparing 16 bytes
     or more and with at least one buffer not starting on a 4-byte boundary.
     William Lewis provided this test program.   */
  {
    char foo[21];
    char bar[21];
    int i;
    for (i = 0; i < 4; i++)
      {
        char *a = foo + i;
        char *b = bar + i;
        strcpy (a, "--------01111111");
        strcpy (b, "--------10000000");
        if (memcmp (a, b, 16) >= 0)
          exit (1);
      }
    exit (0);
  }

  ;
  return 0;
}
_ACEOF
rm -f conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
  (eval $ac_link) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_func_memcmp_working=yes
else
  echo "$as_me: program exited with status $ac_status" >&5
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

( exit $ac_status )
ac_cv_func_memcmp_working=no
fi
rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
fi
fi
echo "$as_me:$LINENO: result: $ac_cv_func_memcmp_working" >&5
echo "${ECHO_T}$ac_cv_func_memcmp_working" >&6
test $ac_cv_func_memcmp_working = no && LIBOBJS="$LIBOBJS memcmp.$ac_objext"



for ac_header in stdlib.h unistd.h
do
as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
if eval "test \"\${$as_ac_Header+set}\" = set"; then
  echo "$as_me:$LINENO: checking for $ac_header" >&5
echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
if eval "test \"\${$as_ac_Header+set}\" = set"; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
fi
echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
else
  # Is the header compilable?
echo "$as_me:$LINENO: checking $ac_header usability" >&5
echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
$ac_includes_default
#include <$ac_header>
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_header_compiler=yes
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

ac_header_compiler=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
echo "${ECHO_T}$ac_header_compiler" >&6

# Is the header present?
echo "$as_me:$LINENO: checking $ac_header presence" >&5
echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <$ac_header>
_ACEOF
if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null; then
  if test -s conftest.err; then
    ac_cpp_err=$ac_c_preproc_warn_flag
  else
    ac_cpp_err=
  fi
else
  ac_cpp_err=yes
fi
if test -z "$ac_cpp_err"; then
  ac_header_preproc=yes
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  ac_header_preproc=no
fi
rm -f conftest.err conftest.$ac_ext
echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
echo "${ECHO_T}$ac_header_preproc" >&6

# So?  What about this header?
case $ac_header_compiler:$ac_header_preproc in
  yes:no )
    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
    (
      cat <<\_ASBOX
## ------------------------------------ ##
## Report this to bug-autoconf@gnu.org. ##
## ------------------------------------ ##
_ASBOX
    ) |
      sed "s/^/$as_me: WARNING:     /" >&2
    ;;
  no:yes )
    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
    { echo "$as_me:$LINENO: WARNING: $ac_header: check for missing prerequisite headers?" >&5
echo "$as_me: WARNING: $ac_header: check for missing prerequisite headers?" >&2;}
    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
    (
      cat <<\_ASBOX
## ------------------------------------ ##
## Report this to bug-autoconf@gnu.org. ##
## ------------------------------------ ##
_ASBOX
    ) |
      sed "s/^/$as_me: WARNING:     /" >&2
    ;;
esac
echo "$as_me:$LINENO: checking for $ac_header" >&5
echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
if eval "test \"\${$as_ac_Header+set}\" = set"; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  eval "$as_ac_Header=$ac_header_preproc"
fi
echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6

fi
if test `eval echo '${'$as_ac_Header'}'` = yes; then
  cat >>confdefs.h <<_ACEOF
#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
_ACEOF

fi