glibc/sysdeps/loongarch/configure

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

$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h


{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the toolchain is sufficient to build static PIE on LoongArch" >&5
$as_echo_n "checking if the toolchain is sufficient to build static PIE on LoongArch... " >&6; }
if ${libc_cv_static_pie_on_loongarch+:} false; then :
  $as_echo_n "(cached) " >&6
else

  cat > conftest1.S << EOF
.global _start
.type _start, @function
_start:
  li.w \$a7, 93
  /* This ensures the assembler supports explicit reloc.  */
  pcalau12i \$a0, %pc_hi20(x)
  ld.w \$a0, \$a0, %pc_lo12(x)
  syscall 0

.data
x:
  .word 0
  /* This should produce an R_LARCH_RELATIVE in the static PIE.  */
  .dword _start
EOF
  cat > conftest2.S << EOF
.global f
.type f, @function
f:
  /* The linker should be able to handle this and produce a PLT entry.  */
  la.pcrel \$t0, \$t0, external_func
  jirl \$zero, \$t0, 0
EOF

  libc_cv_static_pie_on_loongarch=no
  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static-pie -nostdlib -fPIE -o conftest1 conftest1.S'
  { { eval echo "\"\$as_me\":${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; }; } \
     && { ac_try='LC_ALL=C $READELF -Wr conftest1 | grep -q R_LARCH_RELATIVE'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; } \
     && { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -shared -fPIC -o conftest2.so conftest2.S'
  { { eval echo "\"\$as_me\":${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; }; } \
     && { ac_try='LC_ALL=C $READELF -Wr conftest2.so | grep -q 'R_LARCH_JUMP_SLOT.*external_func''
  { { eval echo "\"\$as_me\":${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_static_pie_on_loongarch=yes
  fi
  rm -rf conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_static_pie_on_loongarch" >&5
$as_echo "$libc_cv_static_pie_on_loongarch" >&6; }

if test "$libc_cv_static_pie_on_loongarch" = yes; then
  $as_echo "#define SUPPORT_STATIC_PIE 1" >>confdefs.h

fi

  # Check if gcc supports option -mcmodel=medium.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports option -mcmodel=medium" >&5
$as_echo_n "checking whether $CC supports option -mcmodel=medium... " >&6; }
if ${libc_cv_loongarch_cmodel_medium+:} false; then :
  $as_echo_n "(cached) " >&6
else

  if { ac_try='${CC-cc} -c $CFLAGS -mcmodel=medium /dev/null 1>&5'
  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  $as_echo "$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
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_loongarch_cmodel_medium" >&5
$as_echo "$libc_cv_loongarch_cmodel_medium" >&6; }
config_vars="$config_vars
have-cmodel-medium = $libc_cv_loongarch_cmodel_medium"