mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 12:11:40 +00:00
95207db816
include/linux/compiler-intel.h had no update in the past 3 years.
We often forget about the third C compiler to build the kernel.
For example, commit a0a12c3ed0 ("asm goto: eradicate CC_HAS_ASM_GOTO")
only mentioned GCC and Clang.
init/Kconfig defines CC_IS_GCC and CC_IS_CLANG but not CC_IS_ICC,
and nobody has reported any issue.
I guess the Intel Compiler support is broken, and nobody is caring
about it.
Harald Arnesen pointed out ICC (classic Intel C/C++ compiler) is
deprecated:
$ icc -v
icc: remark #10441: The Intel(R) C++ Compiler Classic (ICC) is
deprecated and will be removed from product release in the second half
of 2023. The Intel(R) oneAPI DPC++/C++ Compiler (ICX) is the recommended
compiler moving forward. Please transition to use this compiler. Use
'-diag-disable=10441' to disable this message.
icc version 2021.7.0 (gcc version 12.1.0 compatibility)
Arnd Bergmann provided a link to the article, "Intel C/C++ compilers
complete adoption of LLVM".
lib/zstd/common/compiler.h and lib/zstd/compress/zstd_fast.c were kept
untouched for better sync with https://github.com/facebook/zstd
Link: https://www.intel.com/content/www/us/en/developer/articles/technical/adoption-of-llvm-complete-icx.html
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
71 lines
1.4 KiB
Bash
Executable File
71 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Print the C compiler name and its version in a 5 or 6-digit form.
|
|
# Also, perform the minimum version check.
|
|
|
|
set -e
|
|
|
|
# Print the C compiler name and some version components.
|
|
get_c_compiler_info()
|
|
{
|
|
cat <<- EOF | "$@" -E -P -x c - 2>/dev/null
|
|
#if defined(__clang__)
|
|
Clang __clang_major__ __clang_minor__ __clang_patchlevel__
|
|
#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 -- $(get_c_compiler_info "$@")
|
|
|
|
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 C 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 "*** C 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
|