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>
73 lines
1.5 KiB
Bash
Executable File
73 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
|