Commit | Line | Data |
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5cf896fb PC |
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 | ||
65e1f38d | 7 | cat << "END" | $CC -c -x c - -o $tmp_file.o >/dev/null 2>&1 |
5cf896fb PC |
8 | void *p = &p; |
9 | END | |
ccb2d173 FS |
10 | |
11 | # ld.lld before 15 did not support -z pack-relative-relocs. | |
12 | if ! $LD $tmp_file.o -shared -Bsymbolic --pack-dyn-relocs=relr -o $tmp_file 2>/dev/null; then | |
13 | $LD $tmp_file.o -shared -Bsymbolic -z pack-relative-relocs -o $tmp_file 2>&1 | | |
14 | grep -q pack-relative-relocs && exit 1 | |
15 | fi | |
5cf896fb PC |
16 | |
17 | # Despite printing an error message, GNU nm still exits with exit code 0 if it | |
18 | # sees a relr section. So we need to check that nothing is printed to stderr. | |
65e1f38d | 19 | test -z "$($NM $tmp_file 2>&1 >/dev/null)" |
5cf896fb | 20 | |
65e1f38d | 21 | $OBJCOPY -O binary $tmp_file $tmp_file.bin |