glibc/sysdeps/unix/sysv/linux/mips/configure

# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
 # Local configure fragment for sysdeps/unix/sysv/linux/mips.


cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

    #if (_MIPS_SIM != _ABIO32)
    #error Not O32 ABI
    #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_abi=o32
else
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

      #if (_MIPS_SIM != _ABIN32)
      #error Not N32 ABI
      #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_abi=n32
else
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

        #if (_MIPS_SIM != _ABI64)
        #error Not 64 ABI
        #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_abi=n64
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext

if test -z "$libc_mips_abi"; then
  as_fn_error $? "could not determine what ABI the compiler is using" "$LINENO" 5
fi

cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

    #if !defined(__mips_soft_float)
    #error Not soft ABI
    #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_float=soft
else
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

      #if !defined(__mips_hard_float)
      #error Not hard ABI
      #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_float=hard
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext

if test -z "$libc_mips_float"; then
  as_fn_error $? "could not determine if compiler is using hard or soft floating point ABI" "$LINENO" 5
fi

libc_mips_o32_fp=
libc_cv_mips_fp64=
libc_cv_mips_modd_spreg=

if test x"$libc_mips_abi" = xo32 -a x"$libc_mips_float" = xhard; then
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

      #if !defined(__mips_fpr)
      #error Missing FPR sizes
      #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

        #if (__mips_fpr != 32)
        #error Not FP32
        #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_o32_fp=32
else
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

          #if (__mips_fpr != 0) || !defined(_MIPS_SPFPSET) || (_MIPS_SPFPSET != 16)
          #error Not FPXX (without odd single-precision registers)
          #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_o32_fp=xx
else
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

            #if (__mips_fpr != 0)
            #error Not FPXX (with odd single precision registers)
            #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_o32_fp=xxo
else
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

              #if (__mips_fpr != 64) || !defined(_MIPS_SPFPSET) || (_MIPS_SPFPSET != 16)
              #error Not FP64A
              #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_o32_fp=64a
else
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

                #if (__mips_fpr != 64)
                #error Not FP64
                #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_o32_fp=64
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext

  if { ac_try='${CC-cc} -mfp64 -xc /dev/null -S -o /dev/null'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; }; then :
  libc_cv_mips_fp64=yes
else
  libc_cv_mips_fp64=no
fi
  if { ac_try='${CC-cc} -Werror -modd-spreg -xc /dev/null -S -o /dev/null'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; }; then :
  libc_cv_mips_modd_spreg=yes
else
  libc_cv_mips_modd_spreg=no
fi
fi
config_vars="$config_vars
o32-fpabi = ${libc_mips_o32_fp}"
config_vars="$config_vars
has-mpf64 = ${libc_cv_mips_fp64}"
config_vars="$config_vars
has-modd-spreg = ${libc_cv_mips_modd_spreg}"

cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

    #include <linux/prctl.h>
    #if !defined(PR_GET_FP_MODE) || !defined(PR_SET_FP_MODE)
    #error New prctl support for setting FP modes not found
    #endif
int
main ()
{

  ;
  return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
  libc_mips_mode_switch=yes
else
  libc_mips_mode_switch=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
config_vars="$config_vars
mips-mode-switch = ${libc_mips_mode_switch}"


{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
if ${ac_cv_path_GREP+:} false; then :
  $as_echo_n "(cached) " >&6
else
  if test -z "$GREP"; then
  ac_path_GREP_found=false
  # Loop through the user's path and test for each of PROGNAME-LIST
  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_prog in grep ggrep; do
    for ac_exec_ext in '' $ac_executable_extensions; do
      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
      as_fn_executable_p "$ac_path_GREP" || continue
# Check for GNU ac_path_GREP and select it if it is found.
  # Check for GNU $ac_path_GREP
case `"$ac_path_GREP" --version 2>&1` in
*GNU*)
  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
*)
  ac_count=0
  $as_echo_n 0123456789 >"conftest.in"
  while :
  do
    cat "conftest.in" "conftest.in" >"conftest.tmp"
    mv "conftest.tmp" "conftest.in"
    cp "conftest.in" "conftest.nl"
    $as_echo 'GREP' >> "conftest.nl"
    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
    as_fn_arith $ac_count + 1 && ac_count=$as_val
    if test $ac_count -gt ${ac_path_GREP_max-0}; then
      # Best one so far, save it but keep looking for a better one
      ac_cv_path_GREP="$ac_path_GREP"
      ac_path_GREP_max=$ac_count
    fi
    # 10*(2^10) chars as input seems more than enough
    test $ac_count -gt 10 && break
  done
  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
esac

      $ac_path_GREP_found && break 3
    done
  done
  done
IFS=$as_save_IFS
  if test -z "$ac_cv_path_GREP"; then
    as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
  fi
else
  ac_cv_path_GREP=$GREP
fi

fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
$as_echo "$ac_cv_path_GREP" >&6; }
 GREP="$ac_cv_path_GREP"


{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
$as_echo_n "checking for egrep... " >&6; }
if ${ac_cv_path_EGREP+:} false; then :
  $as_echo_n "(cached) " >&6
else
  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
   then ac_cv_path_EGREP="$GREP -E"
   else
     if test -z "$EGREP"; then
  ac_path_EGREP_found=false
  # Loop through the user's path and test for each of PROGNAME-LIST
  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_prog in egrep; do
    for ac_exec_ext in '' $ac_executable_extensions; do
      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
      as_fn_executable_p "$ac_path_EGREP" || continue
# Check for GNU ac_path_EGREP and select it if it is found.
  # Check for GNU $ac_path_EGREP
case `"$ac_path_EGREP" --version 2>&1` in
*GNU*)
  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
*)
  ac_count=0
  $as_echo_n 0123456789 >"conftest.in"
  while :
  do
    cat "conftest.in" "conftest.in" >"conftest.tmp"
    mv "conftest.tmp" "conftest.in"
    cp "conftest.in" "conftest.nl"
    $as_echo 'EGREP' >> "conftest.nl"
    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
    as_fn_arith $ac_count + 1 && ac_count=$as_val
    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
      # Best one so far, save it but keep looking for a better one
      ac_cv_path_EGREP="$ac_path_EGREP"
      ac_path_EGREP_max=$ac_count
    fi
    # 10*(2^10) chars as input seems more than enough
    test $ac_count -gt 10 && break
  done
  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
esac

      $ac_path_EGREP_found && break 3
    done
  done
  done
IFS=$as_save_IFS
  if test -z "$ac_cv_path_EGREP"; then
    as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
  fi
else
  ac_cv_path_EGREP=$EGREP
fi

   fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
$as_echo "$ac_cv_path_EGREP" >&6; }
 EGREP="$ac_cv_path_EGREP"


{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler is using the 2008 NaN encoding" >&5
$as_echo_n "checking whether the compiler is using the 2008 NaN encoding... " >&6; }
if ${libc_cv_mips_nan2008+:} false; then :
  $as_echo_n "(cached) " >&6
else
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */
dnl
#ifdef __mips_nan2008
yes
#endif
_ACEOF
if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
  $EGREP "yes" >/dev/null 2>&1; then :
  libc_cv_mips_nan2008=yes
else
  libc_cv_mips_nan2008=no
fi
rm -f conftest*

fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_mips_nan2008" >&5
$as_echo "$libc_cv_mips_nan2008" >&6; }

libc_mips_nan=
if test x"$libc_cv_mips_nan2008" = xyes; then
  libc_mips_nan=_2008
fi

config_vars="$config_vars
default-abi = ${libc_mips_abi}_${libc_mips_float}${libc_mips_nan}"

case $machine in
mips/mips64/n64/*)
  test -n "$libc_cv_slibdir" ||
case "$prefix" in
/usr | /usr/)
  libc_cv_slibdir='/lib64'
  libc_cv_rtlddir='/lib64'
  if test "$libdir" = '${exec_prefix}/lib'; then
    libdir='${exec_prefix}/lib64';
    # Locale data can be shared between 32-bit and 64-bit libraries.
    libc_cv_complocaledir='${exec_prefix}/lib/locale'
  fi
  ;;
esac
  ;;
mips/mips64/n32/*)
  test -n "$libc_cv_slibdir" ||
case "$prefix" in
/usr | /usr/)
  libc_cv_slibdir='/lib32'
  libc_cv_rtlddir='/lib32'
  if test "$libdir" = '${exec_prefix}/lib'; then
    libdir='${exec_prefix}/lib32';
    # Locale data can be shared between 32-bit and 64-bit libraries.
    libc_cv_complocaledir='${exec_prefix}/lib/locale'
  fi
  ;;
esac
  ;;
esac

libc_cv_gcc_unwind_find_fde=yes

if test -z "$arch_minimum_kernel"; then
  if test x$libc_cv_mips_nan2008 = xyes; then
    arch_minimum_kernel=4.5.0
  fi
fi

# Check if we are supposed to run on kernels older than 4.8.0. If so,
# force executable stack to avoid potential runtime problems with fpu
# emulation.
# NOTE: The check below assumes that in absence of user-provided minumum_kernel
# we will default to arch_minimum_kernel which is currently less than 4.8.0 for
# all known configurations. If this changes, the check must be updated.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler must use executable stack" >&5
$as_echo_n "checking whether the compiler must use executable stack... " >&6; }
if ${libc_cv_mips_force_execstack+:} false; then :
  $as_echo_n "(cached) " >&6
else
  libc_cv_mips_force_execstack=no
  if test $libc_mips_float = hard; then
    if test -n "$minimum_kernel"; then

       min_version=$((`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 65536 + \2 \* 256 + \3/'`))

       if test $min_version -lt 264192; then
         libc_cv_mips_force_execstack=yes
       fi
    else
      libc_cv_mips_force_execstack=yes
    fi
  fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_mips_force_execstack" >&5
$as_echo "$libc_cv_mips_force_execstack" >&6; }

libc_mips_has_gnustack=$libc_cv_as_noexecstack

if test $libc_cv_mips_force_execstack = yes; then
  libc_mips_has_gnustack=no
  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: forcing executable stack for pre-4.8.0 Linux kernels" >&5
$as_echo "$as_me: WARNING: forcing executable stack for pre-4.8.0 Linux kernels" >&2;}
fi

config_vars="$config_vars
mips-force-execstack = ${libc_cv_mips_force_execstack}"
config_vars="$config_vars
mips-has-gnustack = ${libc_mips_has_gnustack}"