linux - scripts/as-version.sh

82 lines · 2.0 KiB

1	#!/bin/sh
2	# SPDX-License-Identifier: GPL-2.0-only
3	#
4	# Print the assembler name and its version in a 5 or 6-digit form.
5	# Also, perform the minimum version check.
6	# (If it is the integrated assembler, return 0 as the version, and
7	# skip the version check.)
8
9	set -e
10
11	# Convert the version string x.y.z to a canonical 5 or 6-digit form.
12	get_canonical_version()
13	{
14	IFS=.
15	set -- $1
16
17	# If the 2nd or 3rd field is missing, fill it with a zero.
18	#
19	# The 4th field, if present, is ignored.
20	# This occurs in development snapshots as in 2.35.1.20201116
21	echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
22	}
23
24	# Clang fails to handle -Wa,--version unless -fno-integrated-as is given.
25	# We check -fintegrated-as, expecting it is explicitly passed in for the
26	# integrated assembler case.
27	check_integrated_as()
28	{
29	while [ $# -gt 0 ]; do
30	if [ "$1" = -fintegrated-as ]; then
31	# For the integrated assembler, we do not check the
32	# version here. It is the same as the clang version, and
33	# it has been already checked by scripts/cc-version.sh.
34	echo LLVM 0
35	exit 0
36	fi
37	shift
38	done
39	}
40
41	check_integrated_as "$@"
42
43	orig_args="$@"
44
45	# Get the first line of the --version output.
46	IFS='
47	'
48	set -- $(LC_ALL=C "$@" -Wa,--version -c -x assembler-with-cpp /dev/null -o /dev/null 2>/dev/null)
49
50	# Split the line on spaces.
51	IFS=' '
52	set -- $1
53
54	min_tool_version=$(dirname $0)/min-tool-version.sh
55
56	if [ "$1" = GNU -a "$2" = assembler ]; then
57	shift $(($# - 1))
58	version=$1
59	min_version=$($min_tool_version binutils)
60	name=GNU
61	else
62	echo "$orig_args: unknown assembler invoked" >&2
63	exit 1
64	fi
65
66	# Some distributions append a package release number, as in 2.34-4.fc32
67	# Trim the hyphen and any characters that follow.
68	version=${version%-*}
69
70	cversion=$(get_canonical_version $version)
71	min_cversion=$(get_canonical_version $min_version)
72
73	if [ "$cversion" -lt "$min_cversion" ]; then
74	echo >&2 "***"
75	echo >&2 "*** Assembler is too old."
76	echo >&2 "*** Your $name assembler version: $version"
77	echo >&2 "*** Minimum $name assembler version: $min_version"
78	echo >&2 "***"
79	exit 1
80	fi
81
82	echo $name $cversion