mirror of
https://github.com/torvalds/linux.git
synced 2026-01-24 23:16:46 +00:00
946d462346
The check-function-names.sh scripts invokes 'nm' directly and this can
be problematic during cross-compilation when the toolchain is different
from the system's default (e.g. LLVM=1).
scripts/check-function-names.sh: nm: not found
Let's prefer the ${NM} variable which is already set by kbuild. However,
still fallback to plain 'nm' to ensure the script is still usable when
called directly.
Fixes: 93863f3f85 ("kbuild: Check for functions with ambiguous -ffunction-sections section names")
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20251218175824.3122690-1-cmllamas@google.com
Signed-off-by: Nicolas Schier <nsc@kernel.org>
26 lines
645 B
Bash
Executable File
26 lines
645 B
Bash
Executable File
#!/bin/sh
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Certain function names are disallowed due to section name ambiguities
|
|
# introduced by -ffunction-sections.
|
|
#
|
|
# See the comment above TEXT_MAIN in include/asm-generic/vmlinux.lds.h.
|
|
|
|
objfile="$1"
|
|
|
|
if [ ! -f "$objfile" ]; then
|
|
echo "usage: $0 <file.o>" >&2
|
|
exit 1
|
|
fi
|
|
|
|
bad_symbols=$(${NM:-nm} "$objfile" | awk '$2 ~ /^[TtWw]$/ {print $3}' | grep -E '^(startup|exit|split|unlikely|hot|unknown)(\.|$)')
|
|
|
|
if [ -n "$bad_symbols" ]; then
|
|
echo "$bad_symbols" | while read -r sym; do
|
|
echo "$objfile: error: $sym() function name creates ambiguity with -ffunction-sections" >&2
|
|
done
|
|
exit 1
|
|
fi
|
|
|
|
exit 0
|