glibc/sysdeps/riscv/configure

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

# Check if static linker supports R_RISCV_ALIGN
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for R_RISCV_ALIGN linker relaxation support" >&5
printf %s "checking for R_RISCV_ALIGN linker relaxation support... " >&6; }
if test ${libc_cv_riscv_r_align+y}
then :
  printf %s "(cached) " >&6
else $as_nop
    cat > conftest.S <<EOF
.align 3
foo:
  li a0,42
  ret
EOF
  libc_cv_riscv_r_align=no
  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles $no_ssp -shared -fPIC -o contests.o conftest.S'
  { { eval echo "\"\$as_me\":${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 $ac_status = 0; }; }
  then
    libc_cv_riscv_r_align=yes
  fi
  rm -rf conftest.*
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_riscv_r_align" >&5
printf "%s\n" "$libc_cv_riscv_r_align" >&6; }
config_vars="$config_vars
riscv-r-align = $libc_cv_riscv_r_align"

{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if the toolchain is sufficient to build static PIE on RISC-V" >&5
printf %s "checking if the toolchain is sufficient to build static PIE on RISC-V... " >&6; }
if test ${libc_cv_static_pie_on_riscv+y}
then :
  printf %s "(cached) " >&6
else $as_nop

  cat > conftest1.S <<\EOF
    .globl _start
    .type   _start, @function
_start:
    nop

    .data
    /* This should produce an R_RISCV_RELATIVE in the static PIE.  */
    .dword      _start
EOF

  libc_cv_static_pie_on_riscv=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 $ac_try) 2>&5
  ac_status=$?
  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; } \
     && { ac_try='LC_ALL=C $READELF -Wr conftest1 | grep -q R_RISCV_RELATIVE'
  { { eval echo "\"\$as_me\":${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 $READELF -Wl conftest1 | grep -q INTERP'
  { { eval echo "\"\$as_me\":${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 $ac_status = 0; }; }
  then
    libc_cv_static_pie_on_riscv=yes
  fi
  rm -rf conftest*
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_static_pie_on_riscv" >&5
printf "%s\n" "$libc_cv_static_pie_on_riscv" >&6; }

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

fi