LXR linux/scripts/as-version.sh

   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
   9set -e
  10
  11# Convert the version string x.y.z to a canonical 5 or 6-digit form.
  12get_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.
  27check_integrated_as()
  28{
  29        while [ $# -gt 0 ]; do
  30                if [ "$1" = -fintegrated-as ]; then
  31                        # For the integrated assembler, we do not check the
  32                        # version here. It is the same as the clang version, and
  33                        # it has been already checked by scripts/cc-version.sh.
  34                        echo LLVM 0
  35                        exit 0
  36                fi
  37                shift
  38        done
  39}
  40
  41check_integrated_as "$@"
  42
  43orig_args="$@"
  44
  45# Get the first line of the --version output.
  46IFS='
  47'
  48set -- $(LC_ALL=C "$@" -Wa,--version -c -x assembler /dev/null -o /dev/null 2>/dev/null)
  49
  50# Split the line on spaces.
  51IFS=' '
  52set -- $1
  53
  54min_tool_version=$(dirname $0)/min-tool-version.sh
  55
  56if [ "$1" = GNU -a "$2" = assembler ]; then
  57        shift $(($# - 1))
  58        version=$1
  59        min_version=$($min_tool_version binutils)
  60        name=GNU
  61else
  62        echo "$orig_args: unknown assembler invoked" >&2
  63        exit 1
  64fi
  65
  66# Some distributions append a package release number, as in 2.34-4.fc32
  67# Trim the hyphen and any characters that follow.
  68version=${version%-*}
  69
  70cversion=$(get_canonical_version $version)
  71min_cversion=$(get_canonical_version $min_version)
  72
  73if [ "$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
  80fi
  81
  82echo $name $cversion
  83