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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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Shell
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667#!/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" inGCC) version=$2.$3.$4 min_version=$($min_tool_version gcc) ;;Clang) version=$2.$3.$4 min_version=$($min_tool_version llvm) ;;*) echo "$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 1fi
echo $name $cversion