mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
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>
72 lines
1.5 KiB
Bash
Executable file
72 lines
1.5 KiB
Bash
Executable file
#!/bin/sh
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Print the compiler name and its version in a 5 or 6-digit form.
|
|
# Also, perform the minimum version check.
|
|
|
|
set -e
|
|
|
|
# Print the compiler name and some version components.
|
|
get_compiler_info()
|
|
{
|
|
cat <<- EOF | "$@" -E -P -x c - 2>/dev/null
|
|
#if defined(__clang__)
|
|
Clang __clang_major__ __clang_minor__ __clang_patchlevel__
|
|
#elif defined(__INTEL_COMPILER)
|
|
ICC __INTEL_COMPILER __INTEL_COMPILER_UPDATE
|
|
#elif defined(__GNUC__)
|
|
GCC __GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__
|
|
#else
|
|
unknown
|
|
#endif
|
|
EOF
|
|
}
|
|
|
|
# Convert the version string x.y.z to a canonical 5 or 6-digit form.
|
|
get_canonical_version()
|
|
{
|
|
IFS=.
|
|
set -- $1
|
|
echo $((10000 * $1 + 100 * $2 + $3))
|
|
}
|
|
|
|
# $@ instead of $1 because multiple words might be given, e.g. CC="ccache gcc".
|
|
orig_args="$@"
|
|
set -- $(get_compiler_info "$@")
|
|
|
|
name=$1
|
|
|
|
min_tool_version=$(dirname $0)/min-tool-version.sh
|
|
|
|
case "$name" in
|
|
GCC)
|
|
version=$2.$3.$4
|
|
min_version=$($min_tool_version gcc)
|
|
;;
|
|
Clang)
|
|
version=$2.$3.$4
|
|
min_version=$($min_tool_version llvm)
|
|
;;
|
|
ICC)
|
|
version=$(($2 / 100)).$(($2 % 100)).$3
|
|
min_version=$($min_tool_version icc)
|
|
;;
|
|
*)
|
|
echo "$orig_args: unknown compiler" >&2
|
|
exit 1
|
|
;;
|
|
esac
|
|
|
|
cversion=$(get_canonical_version $version)
|
|
min_cversion=$(get_canonical_version $min_version)
|
|
|
|
if [ "$cversion" -lt "$min_cversion" ]; then
|
|
echo >&2 "***"
|
|
echo >&2 "*** Compiler is too old."
|
|
echo >&2 "*** Your $name version: $version"
|
|
echo >&2 "*** Minimum $name version: $min_version"
|
|
echo >&2 "***"
|
|
exit 1
|
|
fi
|
|
|
|
echo $name $cversion
|