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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879#!/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 1else 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 fifi
# There may be something after the version, such as a distribution's package# release number (like Fedora's "2.34-4.fc32") or punctuation (like LLD briefly# added before the "compatible with GNU linkers" string), so remove everything# after just numbers and periods.version=${version%%[!0-9.]*}
cversion=$(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 1fi
echo $name $cversion