2 # SPDX-License-Identifier: GPL-2.0
4 # Print the C compiler name and its version in a 5 or 6-digit form.
5 # Also, perform the minimum version check.
9 # Print the C compiler name and some version components.
12 cat <<- EOF | "$@" -E -P -x c - 2>/dev/null
13 #if defined(__clang__)
14 Clang __clang_major__ __clang_minor__ __clang_patchlevel__
15 #elif defined(__GNUC__)
16 GCC __GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__
23 # Convert the version string x.y.z to a canonical 5 or 6-digit form.
24 get_canonical_version()
28 echo $((10000 * $1 + 100 * $2 + $3))
31 # $@ instead of $1 because multiple words might be given, e.g. CC="ccache gcc".
33 set -- $(get_c_compiler_info "$@")
37 min_tool_version=$(dirname $0)/min-tool-version.sh
42 min_version=$($min_tool_version gcc)
46 min_version=$($min_tool_version llvm)
49 echo "$orig_args: unknown C compiler" >&2
54 cversion=$(get_canonical_version $version)
55 min_cversion=$(get_canonical_version $min_version)
57 if [ "$cversion" -lt "$min_cversion" ]; then
59 echo >&2 "*** C compiler is too old."
60 echo >&2 "*** Your $name version: $version"
61 echo >&2 "*** Minimum $name version: $min_version"