ANDROID: Add CONFIG_LLD_VERSION
CONFIG_LLD_VERSION was originally added in commit d5750cd3c548 ("kbuild: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1"), which is not applicable to 4.19. Additionally, lld-version.sh was eliminated and combined into ld-version.sh in commit 02aff8592204 ("kbuild: check the minimum linker version in Kconfig") and there was a follow up fix in commit 1f09af062556 ("kbuild: Fix ld-version.sh script if LLD was built with LLD_VENDOR"), which is a little large to take into android-4.19-stable for the sake of fixing an LTO issue. Add scripts/lld-version.sh but based on the upstream version of ld-version.sh so that we benefit from the fixes but do not have to backport a ton of patches just to get access to CONFIG_LLD_VERSION. Change-Id: I686ce6cc5f503540d8336b914f0fe978951c469b Signed-off-by: Nathan Chancellor <nathan@kernel.org>
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@ -26,6 +26,10 @@ config CLANG_VERSION
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int
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default $(shell,$(srctree)/scripts/clang-version.sh $(CC))
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config LLD_VERSION
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int
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default $(shell,$(srctree)/scripts/lld-version.sh $(LD))
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config CC_HAS_ASM_GOTO
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def_bool $(success,$(srctree)/scripts/gcc-goto.sh $(CC))
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36
scripts/lld-version.sh
Executable file
36
scripts/lld-version.sh
Executable file
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@ -0,0 +1,36 @@
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#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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#
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# Print ld.lld's version in a 5 or 6-digit form.
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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} + ${3:-0}))
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}
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orig_args="$@"
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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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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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