projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| aec6c60a MY |
1 | #!/bin/sh |
| 2 | # SPDX-License-Identifier: GPL-2.0 | |
| 3 | # | |
| 4 | # Print the compiler name and its version in a 5 or 6-digit form. | |
| 5 | # Also, perform the minimum version check. | |
| 6 | ||
| 7 | set -e | |
| 8 | ||
| 9 | # When you raise the minimum compiler version, please update | |
| 10 | # Documentation/process/changes.rst as well. | |
| 11 | gcc_min_version=4.9.0 | |
| 12 | clang_min_version=10.0.1 | |
| 13 | icc_min_version=16.0.3 # temporary | |
| 14 | ||
| 15 | # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63293 | |
| 16 | # https://lore.kernel.org/r/[email protected] | |
| 17 | if [ "$SRCARCH" = arm64 ]; then | |
| 18 | gcc_min_version=5.1.0 | |
| 19 | fi | |
| 20 | ||
| 21 | # Print the compiler name and some version components. | |
| 22 | get_compiler_info() | |
| 23 | { | |
| 24 | cat <<- EOF | "$@" -E -P -x c - 2>/dev/null | |
| 25 | #if defined(__clang__) | |
| 26 | Clang __clang_major__ __clang_minor__ __clang_patchlevel__ | |
| 27 | #elif defined(__INTEL_COMPILER) | |
| 28 | ICC __INTEL_COMPILER __INTEL_COMPILER_UPDATE | |
| 29 | #elif defined(__GNUC__) | |
| 30 | GCC __GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__ | |
| 31 | #else | |
| 32 | unknown | |
| 33 | #endif | |
| 34 | EOF | |
| 35 | } | |
| 36 | ||
| 37 | # Convert the version string x.y.z to a canonical 5 or 6-digit form. | |
| 38 | get_canonical_version() | |
| 39 | { | |
| 40 | IFS=. | |
| 41 | set -- $1 | |
| 42 | echo $((10000 * $1 + 100 * $2 + $3)) | |
| 43 | } | |
| 44 | ||
| 45 | # $@ instead of $1 because multiple words might be given, e.g. CC="ccache gcc". | |
| 46 | orig_args="$@" | |
| 47 | set -- $(get_compiler_info "$@") | |
| 48 | ||
| 49 | name=$1 | |
| 50 | ||
| 51 | case "$name" in | |
| 52 | GCC) | |
| 53 | version=$2.$3.$4 | |
| 54 | min_version=$gcc_min_version | |
| 55 | ;; | |
| 56 | Clang) | |
| 57 | version=$2.$3.$4 | |
| 58 | min_version=$clang_min_version | |
| 59 | ;; | |
| 60 | ICC) | |
| 61 | version=$(($2 / 100)).$(($2 % 100)).$3 | |
| 62 | min_version=$icc_min_version | |
| 63 | ;; | |
| 64 | *) | |
| 65 | echo "$orig_args: unknown compiler" >&2 | |
| 66 | exit 1 | |
| 67 | ;; | |
| 68 | esac | |
| 69 | ||
| 70 | cversion=$(get_canonical_version $version) | |
| 71 | min_cversion=$(get_canonical_version $min_version) | |
| 72 | ||
| 73 | if [ "$cversion" -lt "$min_cversion" ]; then | |
| 74 | echo >&2 "***" | |
| 75 | echo >&2 "*** Compiler is too old." | |
| 76 | echo >&2 "*** Your $name version: $version" | |
| 77 | echo >&2 "*** Minimum $name version: $min_version" | |
| 78 | echo >&2 "***" | |
| 79 | exit 1 | |
| 80 | fi | |
| 81 | ||
| 82 | echo $name $cversion |