path: root/sysdeps/x86/configure

# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
 # Local configure fragment for sysdeps/x86.

# Check if linker supports x86 ISA level.
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for linker x86 ISA level support" >&5
printf %s "checking for linker x86 ISA level support... " >&6; }
if test ${libc_cv_include_x86_isa_level+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e) cat > conftest1.S <<EOF
#ifdef __LP64__
# define P2ALIGN 3
#else
# define P2ALIGN 2
#endif
	.section ".note.gnu.property", "a"
	.p2align P2ALIGN
	.long 1f - 0f		/* name length.  */
	.long 4f - 1f		/* data length.  */
	/* NT_GNU_PROPERTY_TYPE_0 */
	.long 5			/* note type.  */
0:
	.asciz "GNU"		/* vendor name.  */
1:
	.p2align P2ALIGN
	/* GNU_PROPERTY_X86_ISA_1_NEEDED */
	.long 0xc0008002	/* pr_type.  */
	.long 3f - 2f		/* pr_datasz.  */
2:
	.long 0x1
3:
	.p2align P2ALIGN
4:
EOF
cat > conftest2.S <<EOF
#ifdef __LP64__
# define P2ALIGN 3
#else
# define P2ALIGN 2
#endif
	.section ".note.gnu.property", "a"
	.p2align P2ALIGN
	.long 1f - 0f		/* name length.  */
	.long 4f - 1f		/* data length.  */
	/* NT_GNU_PROPERTY_TYPE_0 */
	.long 5			/* note type.  */
0:
	.asciz "GNU"		/* vendor name.  */
1:
	.p2align P2ALIGN
	/* GNU_PROPERTY_X86_ISA_1_NEEDED */
	.long 0xc0008002	/* pr_type.  */
	.long 3f - 2f		/* pr_datasz.  */
2:
	.long 0x2
3:
	.p2align P2ALIGN
4:
EOF
libc_cv_include_x86_isa_level=no
if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -nostartfiles -nostdlib -r -o conftest conftest1.S conftest2.S'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; }; then
  count=`LC_ALL=C $READELF -n conftest | grep NT_GNU_PROPERTY_TYPE_0 | wc -l`
  if test "$count" -eq 1; then
    libc_cv_include_x86_isa_level=yes
  fi
fi
rm -f conftest* ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_include_x86_isa_level" >&5
printf "%s\n" "$libc_cv_include_x86_isa_level" >&6; }
if test $libc_cv_include_x86_isa_level = yes; then
  printf "%s\n" "#define INCLUDE_X86_ISA_LEVEL 1" >>confdefs.h

  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for LAHF/SAHF instruction support" >&5
printf %s "checking for LAHF/SAHF instruction support... " >&6; }
if test ${libc_cv_have_x86_lahf_sahf+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e)     libc_cv_have_x86_lahf_sahf=no
    if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; } | grep -qE '(-msahf\b|-march=x86-64-v)'; then
      libc_cv_have_x86_lahf_sahf=yes
    fi ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_lahf_sahf" >&5
printf "%s\n" "$libc_cv_have_x86_lahf_sahf" >&6; }
  if test $libc_cv_have_x86_lahf_sahf = yes; then
    printf "%s\n" "#define HAVE_X86_LAHF_SAHF 1" >>confdefs.h

    ISAFLAG="-DHAVE_X86_LAHF_SAHF"
  fi
  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for MOVBE instruction support" >&5
printf %s "checking for MOVBE instruction support... " >&6; }
if test ${libc_cv_have_x86_movbe+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e)     libc_cv_have_x86_movbe=no
    if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; } | grep -qE '(-mmovbe\b|-march=x86-64-v([3-9]|[1-9][0-9]))'; then
      libc_cv_have_x86_movbe=yes
    fi ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_movbe" >&5
printf "%s\n" "$libc_cv_have_x86_movbe" >&6; }
  if test $libc_cv_have_x86_movbe = yes; then
    printf "%s\n" "#define HAVE_X86_MOVBE 1" >>confdefs.h

    ISAFLAG="$ISAFLAG -DHAVE_X86_MOVBE"
  fi

  # Check for ISA level support.
  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ISA level support" >&5
printf %s "checking for ISA level support... " >&6; }
if test ${libc_cv_have_x86_isa_level+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e) cat > conftest.c <<EOF
#include <sysdeps/x86/isa-level.h>
#if MINIMUM_X86_ISA_LEVEL >= 4
libc_cv_have_x86_isa_level=4
#elif MINIMUM_X86_ISA_LEVEL == 3
libc_cv_have_x86_isa_level=3
#elif MINIMUM_X86_ISA_LEVEL == 2
libc_cv_have_x86_isa_level=2
#elif defined __x86_64__
libc_cv_have_x86_isa_level=baseline
#elif MINIMUM_X86_ISA_LEVEL == 1
libc_cv_have_x86_isa_level=1
#else
libc_cv_have_x86_isa_level=0
#endif
EOF
		 eval `${CC-cc} $CFLAGS $CPPFLAGS $ISAFLAG -I$srcdir -E conftest.c | grep libc_cv_have_x86_isa_level`
		 rm -rf conftest* ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_isa_level" >&5
printf "%s\n" "$libc_cv_have_x86_isa_level" >&6; }
elif test $base_machine = x86_64; then
  libc_cv_have_x86_isa_level=baseline
else
  libc_cv_have_x86_isa_level=0
fi
if test $libc_cv_have_x86_isa_level = baseline; then
  printf "%s\n" "#define MINIMUM_X86_ISA_LEVEL 1" >>confdefs.h

else
  printf "%s\n" "#define MINIMUM_X86_ISA_LEVEL $libc_cv_have_x86_isa_level" >>confdefs.h

fi
config_vars="$config_vars
have-x86-isa-level = $libc_cv_have_x86_isa_level"
config_vars="$config_vars
x86-isa-level-2-or-above = 2 3 4"
config_vars="$config_vars
x86-isa-level-3-or-above = 3 4"
config_vars="$config_vars
x86-isa-level-4-or-above = 4"
config_vars="$config_vars
enable-x86-isa-level = $libc_cv_include_x86_isa_level"



saved_CC="$CC"
CC="$TEST_CC"
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if -mfpmath=387 works in testing" >&5
printf %s "checking if -mfpmath=387 works in testing... " >&6; }
if test ${libc_cv_have_test_cc_cflags_mfpmath_387+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e) if { ac_try='${CC-cc} -Werror -mfpmath=387 -xc /dev/null -S -o /dev/null'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; }
then :
  libc_cv_have_test_cc_cflags_mfpmath_387=yes
else case e in #(
  e) libc_cv_have_test_cc_cflags_mfpmath_387=no
 ;;
esac
fi ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_test_cc_cflags_mfpmath_387" >&5
printf "%s\n" "$libc_cv_have_test_cc_cflags_mfpmath_387" >&6; }

CC="$saved_CC"


config_vars="$config_vars
have-test-cc-cflags-mfpmath-387 = $libc_cv_have_test_cc_cflags_mfpmath_387"

conftest_code="
extern int foo;
int *
foo_p (void)
{
  return &foo;
}
"

cat > conftest.c <<EOF
$conftest_code
EOF
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if no direct extern access is enabled by default" >&5
printf %s "checking if no direct extern access is enabled by default... " >&6; }
if test ${libc_cv_cc_no_direct_extern_access+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e)   if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -S -O2 -fno-pic conftest.c -o conftest 1>&5'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; }
  then

libc_cv_cc_cflags_no_direct_extern_access=no
if test "$base_machine" = x86_64; then
  if grep -E -q "mov[lq][ 	]+foo@GOTPCREL\(%rip\)," conftest; then
    libc_cv_cc_no_direct_extern_access=yes
  fi
elif test "$base_machine" = i386; then
  if grep -E -q "movl[ 	]+foo@GOT," conftest; then
    libc_cv_cc_no_direct_extern_access=yes
  fi
else
  echo unsupported machine: $base_machine
  rm -f conftest*
  exit 1
fi

  else

echo failed to check no direct external data access
rm -f conftest*
exit 1

  fi ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_no_direct_extern_access" >&5
printf "%s\n" "$libc_cv_cc_no_direct_extern_access" >&6; }
rm -f conftest*



saved_CC="$CC"
CC="$TEST_CC"
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if -mno-direct-extern-access works in testing" >&5
printf %s "checking if -mno-direct-extern-access works in testing... " >&6; }
if test ${libc_cv_test_cc_cflags_mno_direct_extern_access+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e) if { ac_try='${CC-cc} -Werror -mno-direct-extern-access -xc /dev/null -S -o /dev/null'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; }
then :
  libc_cv_test_cc_cflags_mno_direct_extern_access=yes
else case e in #(
  e) libc_cv_test_cc_cflags_mno_direct_extern_access=no
 ;;
esac
fi ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_test_cc_cflags_mno_direct_extern_access" >&5
printf "%s\n" "$libc_cv_test_cc_cflags_mno_direct_extern_access" >&6; }

CC="$saved_CC"





saved_CC="$CC"
CC="$TEST_CC"
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if -fno-direct-access-external-data works in testing" >&5
printf %s "checking if -fno-direct-access-external-data works in testing... " >&6; }
if test ${libc_cv_test_cc_cflags_fno_direct_access_external_data+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e) if { ac_try='${CC-cc} -Werror -fno-direct-access-external-data -xc /dev/null -S -o /dev/null'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; }
then :
  libc_cv_test_cc_cflags_fno_direct_access_external_data=yes
else case e in #(
  e) libc_cv_test_cc_cflags_fno_direct_access_external_data=no
 ;;
esac
fi ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_test_cc_cflags_fno_direct_access_external_data" >&5
printf "%s\n" "$libc_cv_test_cc_cflags_fno_direct_access_external_data" >&6; }

CC="$saved_CC"



if test $libc_cv_test_cc_cflags_mno_direct_extern_access = yes; then
  libc_cv_test_cc_cflags_no_direct_extern_access="-mno-direct-extern-access"
elif test $libc_cv_test_cc_cflags_fno_direct_access_external_data = yes; then
  libc_cv_test_cc_cflags_no_direct_extern_access="-fno-direct-access-external-data"
fi

config_vars="$config_vars
test-cc-cflags-no-direct-extern-access = $libc_cv_test_cc_cflags_no_direct_extern_access"

conftest_code="
extern float truncf (float __x) __attribute__ ((__nothrow__,__const__));

float
tf (float x)
{
  return truncf (x);
}
"

cat > conftest.c <<EOF
$conftest_code
EOF
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if -Os inlines trunc" >&5
printf %s "checking if -Os inlines trunc... " >&6; }
if test ${libc_cv_cc_x86_inline_trunc+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e)   if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -S -Os -msse4.1 conftest.c -o conftest 1>&5'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; }
  then

libc_cv_cc_x86_inline_trunc=no
if grep -E -q "roundss" conftest; then
  libc_cv_cc_x86_inline_trunc=yes
fi

  else

echo "failed to check if -Os inlines trunc."
rm -f conftest*
exit 1

  fi ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_x86_inline_trunc" >&5
printf "%s\n" "$libc_cv_cc_x86_inline_trunc" >&6; }
rm -f conftest*
if test "$libc_cv_cc_x86_inline_trunc" = yes; then
  printf "%s\n" "#define HAVE_X86_INLINE_TRUNC 1" >>confdefs.h

else
  printf "%s\n" "#define HAVE_X86_INLINE_TRUNC 0" >>confdefs.h

fi

if test "${libc_cv_cc_no_direct_extern_access}${libc_cv_test_cc_cflags_no_direct_extern_access}" = yes; then
  libc_cv_protected_data=no
fi

printf "%s\n" "#define SUPPORT_STATIC_PIE 1" >>confdefs.h