Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3#
4# Certain function names are disallowed due to section name ambiguities
5# introduced by -ffunction-sections.
6#
7# See the comment above TEXT_MAIN in include/asm-generic/vmlinux.lds.h.
8
9objfile="$1"
10
11if [ ! -f "$objfile" ]; then
12 echo "usage: $0 <file.o>" >&2
13 exit 1
14fi
15
16bad_symbols=$(nm "$objfile" | awk '$2 ~ /^[TtWw]$/ {print $3}' | grep -E '^(startup|exit|split|unlikely|hot|unknown)(\.|$)')
17
18if [ -n "$bad_symbols" ]; then
19 echo "$bad_symbols" | while read -r sym; do
20 echo "$objfile: error: $sym() function name creates ambiguity with -ffunction-sections" >&2
21 done
22 exit 1
23fi
24
25exit 0