glibc/sysdeps/loongarch/configure

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

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


{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if ${CC-cc} is sufficient to build static PIE on LoongArch" >&5
printf %s "checking if ${CC-cc} is sufficient to build static PIE on LoongArch... " >&6; }
if test ${libc_cv_static_pie_on_loongarch+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e)
  cat > conftest.S <<\EOF
.global _start
.type _start, @function
_start:
  li.w $a7, 93
  li.w $a0, 0
  syscall 0

.data
x:
  .word 0
  /* This should produce an R_LARCH_RELATIVE in the static PIE.  */
  .dword _start
EOF

  libc_cv_static_pie_on_loongarch=no
  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static-pie -nostdlib -fPIE -o conftest conftest.S'
  { { eval echo "\"\$as_me\":${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; }; } \
     && { ac_try='LC_ALL=C $READELF -Wr conftest | grep -q R_LARCH_RELATIVE'
  { { eval echo "\"\$as_me\":${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; }; } \
     && ! { ac_try='LC_ALL=C $READELF -Wl conftest | grep -q INTERP'
  { { eval echo "\"\$as_me\":${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 $ac_status = 0; }; }
  then
    libc_cv_static_pie_on_loongarch=yes
  fi
  rm -rf conftest*  ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_static_pie_on_loongarch" >&5
printf "%s\n" "$libc_cv_static_pie_on_loongarch" >&6; }

if test "$libc_cv_static_pie_on_loongarch" = yes; then
  printf "%s\n" "#define SUPPORT_STATIC_PIE 1" >>confdefs.h

fi

  # Check if gcc supports option -mcmodel=medium.
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC supports option -mcmodel=medium" >&5
printf %s "checking whether $CC supports option -mcmodel=medium... " >&6; }
if test ${libc_cv_loongarch_cmodel_medium+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e)
  if { ac_try='${CC-cc} -c $CFLAGS -mcmodel=medium /dev/null 1>&5'
  { { eval echo "\"\$as_me\":${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 $ac_status = 0; }; }; then
    libc_cv_loongarch_cmodel_medium=yes
  else
    libc_cv_loongarch_cmodel_medium=no
  fi ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_loongarch_cmodel_medium" >&5
printf "%s\n" "$libc_cv_loongarch_cmodel_medium" >&6; }
config_vars="$config_vars
have-cmodel-medium = $libc_cv_loongarch_cmodel_medium"

# Check if asm support vector instructions.
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for vector support in assembler" >&5
printf %s "checking for vector support in assembler... " >&6; }
if test ${libc_cv_loongarch_vec_asm+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e) cat > conftest.s <<\EOF
        vld  $vr0, $sp, 0
EOF
if { ac_try='${CC-cc} -c $CFLAGS conftest.s -o conftest 1>&5'
  { { eval echo "\"\$as_me\":${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 $ac_status = 0; }; }; then
  libc_cv_loongarch_vec_asm=yes
else
  libc_cv_loongarch_vec_asm=no
fi
rm -f conftest* ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_loongarch_vec_asm" >&5
printf "%s\n" "$libc_cv_loongarch_vec_asm" >&6; }
if test $libc_cv_loongarch_vec_asm = no; then
  as_fn_error $? "binutils version is too old, use 2.41 or newer version" "$LINENO" 5
fi


{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for vector support in compiler" >&5
printf %s "checking for vector support in compiler... " >&6; }
if test ${libc_cv_loongarch_vec_com+y}
then :
  printf %s "(cached) " >&6
else case e in #(
  e)
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

void foo (void)
{
  asm volatile ("vldi \$vr0, 1" ::: "\$vr0");
  asm volatile ("xvldi \$xr0, 1" ::: "\$xr0");
}

_ACEOF
if ac_fn_c_try_compile "$LINENO"
then :
  libc_cv_loongarch_vec_com=yes
else case e in #(
  e) libc_cv_loongarch_vec_com=no ;;
esac
fi
rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;;
esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_loongarch_vec_com" >&5
printf "%s\n" "$libc_cv_loongarch_vec_com" >&6; }
if test "$libc_cv_loongarch_vec_com" = yes ;
then
  printf "%s\n" "#define HAVE_LOONGARCH_VEC_COM 1" >>confdefs.h

fi
config_vars="$config_vars
loongarch-vec-com = $libc_cv_loongarch_vec_com"