1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
1.4 KiB
Executable File
#!/bin/sh
Check whether linker can handle cross-segment @segrel():
CPPFLAGS="" CC=$1 OBJDUMP=$2 READELF=$3 dir=$(dirname $0) tmp=${TMPDIR:-/tmp} out=$tmp/out$$
Check whether cross-segment segment-relative relocs work fine. We need
that for building the gate DSO:
$CC -nostdlib -static -Wl,-T$dir/check-segrel.lds $dir/check-segrel.S -o $out res=$($OBJDUMP --full --section .rodata $out | fgrep 000 | cut -f3 -d' ') rm -f $out if [ $res != 00000a00 ]; then CPPFLAGS="$CPPFLAGS -DHAVE_BUGGY_SEGREL" cat >&2 <<EOF warning: your linker cannot handle cross-segment segment-relative relocations. please upgrade to a newer version (it is safe to use this linker, but the kernel will be bigger than strictly necessary). EOF fi
Check whether .align inside a function works as expected.
$CC -c $dir/check-text-align.S -o $out $READELF -u $out | fgrep -q 'prologue(rlen=12)' res=$? rm -f $out if [ $res -eq 0 ]; then CPPFLAGS="$CPPFLAGS -DHAVE_WORKING_TEXT_ALIGN" fi
if ! $CC -c $dir/check-model.c -o $out 2>&1 | grep model | grep -q attrib then CPPFLAGS="$CPPFLAGS -DHAVE_MODEL_SMALL_ATTRIBUTE" fi rm -f $out
Check whether assembler supports .serialize.{data,instruction} directive.
$CC -c $dir/check-serialize.S -o $out 2>/dev/null res=$? rm -f $out if [ $res -eq 0 ]; then CPPFLAGS="$CPPFLAGS -DHAVE_SERIALIZE_DIRECTIVE" fi
echo $CPPFLAGS