2 # SPDX-License-Identifier: GPL-2.0
4 # Print the linker name and its version in a 5 or 6-digit form.
5 # Also, perform the minimum version check.
9 # Convert the version string x.y.z to a canonical 5 or 6-digit form.
10 get_canonical_version()
15 # If the 2nd or 3rd field is missing, fill it with a zero.
17 # The 4th field, if present, is ignored.
18 # This occurs in development snapshots as in 2.35.1.20201116
19 echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
24 # Get the first line of the --version output.
27 set -- $(LC_ALL=C "$@" --version)
29 # Split the line on spaces.
33 min_tool_version=$(dirname $0)/min-tool-version.sh
35 if [ "$1" = GNU -a "$2" = ld ]; then
38 min_version=$($min_tool_version binutils)
41 elif [ "$1" = GNU -a "$2" = gold ]; then
42 echo "gold linker is not supported as it is not capable of linking the kernel proper." >&2
45 while [ $# -gt 1 -a "$1" != "LLD" ]; do
49 if [ "$1" = LLD ]; then
51 min_version=$($min_tool_version llvm)
55 echo "$orig_args: unknown linker" >&2
60 # Some distributions append a package release number, as in 2.34-4.fc32
61 # Trim the hyphen and any characters that follow.
64 cversion=$(get_canonical_version $version)
65 min_cversion=$(get_canonical_version $min_version)
67 if [ "$cversion" -lt "$min_cversion" ]; then
69 echo >&2 "*** Linker is too old."
70 echo >&2 "*** Your $disp_name version: $version"
71 echo >&2 "*** Minimum $disp_name version: $min_version"