3 # Check whether linker can handle cross-segment @segrel():
13 # Check whether cross-segment segment-relative relocs work fine. We need
14 # that for building the gate DSO:
16 $CC -nostdlib -static -Wl,-T$dir/check-segrel.lds $dir/check-segrel.S -o $out
17 res=$($OBJDUMP --full --section .rodata $out | fgrep 000 | cut -f3 -d' ')
19 if [ $res != 00000a00 ]; then
20 CPPFLAGS="$CPPFLAGS -DHAVE_BUGGY_SEGREL"
22 warning: your linker cannot handle cross-segment segment-relative relocations.
23 please upgrade to a newer version (it is safe to use this linker, but
24 the kernel will be bigger than strictly necessary).
28 # Check whether .align inside a function works as expected.
30 $CC -c $dir/check-text-align.S -o $out
31 $READELF -u $out | fgrep -q 'prologue(rlen=12)'
34 if [ $res -eq 0 ]; then
35 CPPFLAGS="$CPPFLAGS -DHAVE_WORKING_TEXT_ALIGN"
38 if ! $CC -c $dir/check-model.c -o $out 2>&1 | grep __model__ | grep -q attrib
40 CPPFLAGS="$CPPFLAGS -DHAVE_MODEL_SMALL_ATTRIBUTE"
44 # Check whether assembler supports .serialize.{data,instruction} directive.
46 $CC -c $dir/check-serialize.S -o $out 2>/dev/null
49 if [ $res -eq 0 ]; then
50 CPPFLAGS="$CPPFLAGS -DHAVE_SERIALIZE_DIRECTIVE"