forked from Minki/linux
e24b3ffcf4
The kernel build uses various tools, many of which are provided by the same software suite, for example, LLVM and Binutils. When you raise the minimum version of Clang/LLVM, you need to update clang_min_version in scripts/cc-version.sh and also lld_min_version in scripts/ld-version.sh. Kbuild can handle CC=clang and LD=ld.lld independently, but it does not make much sense to maintain their versions separately. Let's create a central place of minimum tool versions so you do not need to touch multiple files. scripts/min-tool-version.sh prints the minimum version of the given tool. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Acked-by: Miguel Ojeda <ojeda@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
77 lines
1.7 KiB
Bash
Executable File
77 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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#
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# Print the linker name and its version in a 5 or 6-digit form.
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# Also, perform the minimum version check.
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set -e
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# Convert the version string x.y.z to a canonical 5 or 6-digit form.
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get_canonical_version()
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{
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IFS=.
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set -- $1
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# If the 2nd or 3rd field is missing, fill it with a zero.
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#
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# The 4th field, if present, is ignored.
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# This occurs in development snapshots as in 2.35.1.20201116
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echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
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}
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orig_args="$@"
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# Get the first line of the --version output.
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IFS='
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'
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set -- $(LC_ALL=C "$@" --version)
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# Split the line on spaces.
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IFS=' '
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set -- $1
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min_tool_version=$(dirname $0)/min-tool-version.sh
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if [ "$1" = GNU -a "$2" = ld ]; then
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shift $(($# - 1))
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version=$1
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min_version=$($min_tool_version binutils)
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name=BFD
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disp_name="GNU ld"
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elif [ "$1" = GNU -a "$2" = gold ]; then
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echo "gold linker is not supported as it is not capable of linking the kernel proper." >&2
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exit 1
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else
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while [ $# -gt 1 -a "$1" != "LLD" ]; do
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shift
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done
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if [ "$1" = LLD ]; then
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version=$2
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min_version=$($min_tool_version llvm)
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name=LLD
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disp_name=LLD
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else
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echo "$orig_args: unknown linker" >&2
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exit 1
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fi
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fi
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# Some distributions append a package release number, as in 2.34-4.fc32
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# Trim the hyphen and any characters that follow.
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version=${version%-*}
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cversion=$(get_canonical_version $version)
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min_cversion=$(get_canonical_version $min_version)
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if [ "$cversion" -lt "$min_cversion" ]; then
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echo >&2 "***"
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echo >&2 "*** Linker is too old."
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echo >&2 "*** Your $disp_name version: $version"
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echo >&2 "*** Minimum $disp_name version: $min_version"
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echo >&2 "***"
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exit 1
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fi
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echo $name $cversion
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