mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 06:12:08 +00:00
e24b3ffcf4
The kernel build uses various tools, many of which are provided by the same software suite, for example, LLVM and Binutils. When you raise the minimum version of Clang/LLVM, you need to update clang_min_version in scripts/cc-version.sh and also lld_min_version in scripts/ld-version.sh. Kbuild can handle CC=clang and LD=ld.lld independently, but it does not make much sense to maintain their versions separately. Let's create a central place of minimum tool versions so you do not need to touch multiple files. scripts/min-tool-version.sh prints the minimum version of the given tool. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Acked-by: Miguel Ojeda <ojeda@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
77 lines
1.7 KiB
Bash
Executable File
77 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Print the linker name and its version in a 5 or 6-digit form.
|
|
# Also, perform the minimum version check.
|
|
|
|
set -e
|
|
|
|
# Convert the version string x.y.z to a canonical 5 or 6-digit form.
|
|
get_canonical_version()
|
|
{
|
|
IFS=.
|
|
set -- $1
|
|
|
|
# If the 2nd or 3rd field is missing, fill it with a zero.
|
|
#
|
|
# The 4th field, if present, is ignored.
|
|
# This occurs in development snapshots as in 2.35.1.20201116
|
|
echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
|
|
}
|
|
|
|
orig_args="$@"
|
|
|
|
# Get the first line of the --version output.
|
|
IFS='
|
|
'
|
|
set -- $(LC_ALL=C "$@" --version)
|
|
|
|
# Split the line on spaces.
|
|
IFS=' '
|
|
set -- $1
|
|
|
|
min_tool_version=$(dirname $0)/min-tool-version.sh
|
|
|
|
if [ "$1" = GNU -a "$2" = ld ]; then
|
|
shift $(($# - 1))
|
|
version=$1
|
|
min_version=$($min_tool_version binutils)
|
|
name=BFD
|
|
disp_name="GNU ld"
|
|
elif [ "$1" = GNU -a "$2" = gold ]; then
|
|
echo "gold linker is not supported as it is not capable of linking the kernel proper." >&2
|
|
exit 1
|
|
else
|
|
while [ $# -gt 1 -a "$1" != "LLD" ]; do
|
|
shift
|
|
done
|
|
|
|
if [ "$1" = LLD ]; then
|
|
version=$2
|
|
min_version=$($min_tool_version llvm)
|
|
name=LLD
|
|
disp_name=LLD
|
|
else
|
|
echo "$orig_args: unknown linker" >&2
|
|
exit 1
|
|
fi
|
|
fi
|
|
|
|
# Some distributions append a package release number, as in 2.34-4.fc32
|
|
# Trim the hyphen and any characters that follow.
|
|
version=${version%-*}
|
|
|
|
cversion=$(get_canonical_version $version)
|
|
min_cversion=$(get_canonical_version $min_version)
|
|
|
|
if [ "$cversion" -lt "$min_cversion" ]; then
|
|
echo >&2 "***"
|
|
echo >&2 "*** Linker is too old."
|
|
echo >&2 "*** Your $disp_name version: $version"
|
|
echo >&2 "*** Minimum $disp_name version: $min_version"
|
|
echo >&2 "***"
|
|
exit 1
|
|
fi
|
|
|
|
echo $name $cversion
|