15cf896fbSPeter Collingbourne#!/bin/sh -eu 25cf896fbSPeter Collingbourne# SPDX-License-Identifier: GPL-2.0 35cf896fbSPeter Collingbourne 45cf896fbSPeter Collingbournetmp_file=$(mktemp) 55cf896fbSPeter Collingbournetrap "rm -f $tmp_file.o $tmp_file $tmp_file.bin" EXIT 65cf896fbSPeter Collingbourne 765e1f38dSIlie Halipcat << "END" | $CC -c -x c - -o $tmp_file.o >/dev/null 2>&1 85cf896fbSPeter Collingbournevoid *p = &p; 95cf896fbSPeter CollingbourneEND 10*ccb2d173SFangrui Song 11*ccb2d173SFangrui Song# ld.lld before 15 did not support -z pack-relative-relocs. 12*ccb2d173SFangrui Songif ! $LD $tmp_file.o -shared -Bsymbolic --pack-dyn-relocs=relr -o $tmp_file 2>/dev/null; then 13*ccb2d173SFangrui Song $LD $tmp_file.o -shared -Bsymbolic -z pack-relative-relocs -o $tmp_file 2>&1 | 14*ccb2d173SFangrui Song grep -q pack-relative-relocs && exit 1 15*ccb2d173SFangrui Songfi 165cf896fbSPeter Collingbourne 175cf896fbSPeter Collingbourne# Despite printing an error message, GNU nm still exits with exit code 0 if it 185cf896fbSPeter Collingbourne# sees a relr section. So we need to check that nothing is printed to stderr. 1965e1f38dSIlie Haliptest -z "$($NM $tmp_file 2>&1 >/dev/null)" 205cf896fbSPeter Collingbourne 2165e1f38dSIlie Halip$OBJCOPY -O binary $tmp_file $tmp_file.bin 22