arch/ia64/scripts/toolchain-flags

   1 #!/bin/sh
   2 #
   3 # Check whether linker can handle cross-segment @segrel():
   4 #
   5 CC=$1
   6 LD=$2
   7 OBJDUMP=$3
   8 dir=$(dirname $0)
   9 tmp=${TMPDIR:-/tmp}
  10 out=$tmp/out$$
  11 $CC -c $dir/check-segrel.S -o $out.o
  12 $LD -static -T$dir/check-segrel.lds $out.o -o $out
  13 res=$($OBJDUMP --full --section .rodata $out | fgrep 000 | cut -f3 -d' ')
  14 rm -f $out $out.o
  15 if [ $res != 00000a00 ]; then
  16     echo " -DHAVE_BUGGY_SEGREL"
  17     cat >&2 <<EOF
  18 warning: your linker cannot handle cross-segment segment-relative relocations.
  19          please upgrade to a newer version (it is safe to use this linker, but
  20          the kernel will be bigger than strictly necessary).
  21 EOF
  22 fi