1 #!/bin/sh 1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # 3 #
4 # Print the linker name and its version in a 5 4 # Print the linker name and its version in a 5 or 6-digit form.
5 # Also, perform the minimum version check. 5 # Also, perform the minimum version check.
6 6
7 set -e 7 set -e
8 8
9 # Convert the version string x.y.z to a canoni 9 # Convert the version string x.y.z to a canonical 5 or 6-digit form.
10 get_canonical_version() 10 get_canonical_version()
11 { 11 {
12 IFS=. 12 IFS=.
13 set -- $1 13 set -- $1
14 14
15 # If the 2nd or 3rd field is missing, 15 # If the 2nd or 3rd field is missing, fill it with a zero.
16 # 16 #
17 # The 4th field, if present, is ignore 17 # The 4th field, if present, is ignored.
18 # This occurs in development snapshots 18 # This occurs in development snapshots as in 2.35.1.20201116
19 echo $((10000 * $1 + 100 * ${2:-0} + $ 19 echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
20 } 20 }
21 21
22 orig_args="$@" 22 orig_args="$@"
23 23
24 # Get the first line of the --version output. 24 # Get the first line of the --version output.
25 IFS=' 25 IFS='
26 ' 26 '
27 set -- $(LC_ALL=C "$@" --version) 27 set -- $(LC_ALL=C "$@" --version)
28 28
29 # Split the line on spaces. 29 # Split the line on spaces.
30 IFS=' ' 30 IFS=' '
31 set -- $1 31 set -- $1
32 32
33 min_tool_version=$(dirname $0)/min-tool-versio 33 min_tool_version=$(dirname $0)/min-tool-version.sh
34 34
35 if [ "$1" = GNU -a "$2" = ld ]; then 35 if [ "$1" = GNU -a "$2" = ld ]; then
36 shift $(($# - 1)) 36 shift $(($# - 1))
37 version=$1 37 version=$1
38 min_version=$($min_tool_version binuti 38 min_version=$($min_tool_version binutils)
39 name=BFD 39 name=BFD
40 disp_name="GNU ld" 40 disp_name="GNU ld"
41 elif [ "$1" = GNU -a "$2" = gold ]; then 41 elif [ "$1" = GNU -a "$2" = gold ]; then
42 echo "gold linker is not supported as 42 echo "gold linker is not supported as it is not capable of linking the kernel proper." >&2
43 exit 1 43 exit 1
44 else 44 else
45 while [ $# -gt 1 -a "$1" != "LLD" ]; d 45 while [ $# -gt 1 -a "$1" != "LLD" ]; do
46 shift 46 shift
47 done 47 done
48 48
49 if [ "$1" = LLD ]; then 49 if [ "$1" = LLD ]; then
50 version=$2 50 version=$2
51 min_version=$($min_tool_versio 51 min_version=$($min_tool_version llvm)
52 name=LLD 52 name=LLD
53 disp_name=LLD 53 disp_name=LLD
54 else 54 else
55 echo "$orig_args: unknown link 55 echo "$orig_args: unknown linker" >&2
56 exit 1 56 exit 1
57 fi 57 fi
58 fi 58 fi
59 59
60 # There may be something after the version, su 60 # There may be something after the version, such as a distribution's package
61 # release number (like Fedora's "2.34-4.fc32") 61 # release number (like Fedora's "2.34-4.fc32") or punctuation (like LLD briefly
62 # added before the "compatible with GNU linker 62 # added before the "compatible with GNU linkers" string), so remove everything
63 # after just numbers and periods. 63 # after just numbers and periods.
64 version=${version%%[!0-9.]*} 64 version=${version%%[!0-9.]*}
65 65
66 cversion=$(get_canonical_version $version) 66 cversion=$(get_canonical_version $version)
67 min_cversion=$(get_canonical_version $min_vers 67 min_cversion=$(get_canonical_version $min_version)
68 68
69 if [ "$cversion" -lt "$min_cversion" ]; then 69 if [ "$cversion" -lt "$min_cversion" ]; then
70 echo >&2 "***" 70 echo >&2 "***"
71 echo >&2 "*** Linker is too old." 71 echo >&2 "*** Linker is too old."
72 echo >&2 "*** Your $disp_name versio 72 echo >&2 "*** Your $disp_name version: $version"
73 echo >&2 "*** Minimum $disp_name ver 73 echo >&2 "*** Minimum $disp_name version: $min_version"
74 echo >&2 "***" 74 echo >&2 "***"
75 exit 1 75 exit 1
76 fi 76 fi
77 77
78 echo $name $cversion 78 echo $name $cversion
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