df58fb431a
This patch is for linux-5.10.y only.
When scripts/lld-version.sh was initially written, it did not account
for the LLD_VENDOR cmake flag, which changes the output of ld.lld's
--version flag slightly.
Without LLD_VENDOR:
$ ld.lld --version
LLD 14.0.0 (compatible with GNU linkers)
With LLD_VENDOR:
$ ld.lld --version
Debian LLD 14.0.0 (compatible with GNU linkers)
As a result, CONFIG_LLD_VERSION is messed up and configuration values
that are dependent on it cannot be selected:
scripts/lld-version.sh: 20: printf: LLD: expected numeric value
scripts/lld-version.sh: 20: printf: LLD: expected numeric value
scripts/lld-version.sh: 20: printf: LLD: expected numeric value
init/Kconfig:52:warning: 'LLD_VERSION': number is invalid
.config:11:warning: symbol value '00000' invalid for LLD_VERSION
.config:8800:warning: override: CPU_BIG_ENDIAN changes choice state
This was fixed upstream by commit 1f09af062556 ("kbuild: Fix
ld-version.sh script if LLD was built with LLD_VENDOR") in 5.12 but that
was done to ld-version.sh after it was massively rewritten in
commit 02aff8592204 ("kbuild: check the minimum linker version in
Kconfig").
To avoid bringing in that change plus its prerequisites and fixes, just
modify lld-version.sh to make it similar to the upstream ld-version.sh,
which handles ld.lld with or without LLD_VENDOR and ld.bfd without any
errors.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
38 lines
697 B
Bash
Executable File
38 lines
697 B
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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#
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# Usage: $ ./scripts/lld-version.sh ld.lld
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#
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# Print the linker version of `ld.lld' in a 5 or 6-digit form
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# such as `100001' for ld.lld 10.0.1 etc.
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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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echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
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}
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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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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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echo $(get_canonical_version ${2%-*})
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else
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echo 0
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fi
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