| Peter Collingbourne | 5cf896f | 2019-07-31 18:18:42 -0700 | [diff] [blame] | 1 | #!/bin/sh -eu |
| 2 | # SPDX-License-Identifier: GPL-2.0 |
| 3 | |
| 4 | tmp_file=$(mktemp) |
| 5 | trap "rm -f $tmp_file.o $tmp_file $tmp_file.bin" EXIT |
| 6 | |
| 7 | cat << "END" | "$CC" -c -x c - -o $tmp_file.o >/dev/null 2>&1 |
| 8 | void *p = &p; |
| 9 | END |
| 10 | "$LD" $tmp_file.o -shared -Bsymbolic --pack-dyn-relocs=relr -o $tmp_file |
| 11 | |
| 12 | # Despite printing an error message, GNU nm still exits with exit code 0 if it |
| 13 | # sees a relr section. So we need to check that nothing is printed to stderr. |
| 14 | test -z "$("$NM" $tmp_file 2>&1 >/dev/null)" |
| 15 | |
| 16 | "$OBJCOPY" -O binary $tmp_file $tmp_file.bin |