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Masahiro Yamadaaec6c602021-01-16 08:35:42 +09001#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3#
Miguel Ojeda2f7ab122021-07-03 16:42:57 +02004# Print the C compiler name and its version in a 5 or 6-digit form.
Masahiro Yamadaaec6c602021-01-16 08:35:42 +09005# Also, perform the minimum version check.
6
7set -e
8
Miguel Ojeda2f7ab122021-07-03 16:42:57 +02009# Print the C compiler name and some version components.
10get_c_compiler_info()
Masahiro Yamadaaec6c602021-01-16 08:35:42 +090011{
12 cat <<- EOF | "$@" -E -P -x c - 2>/dev/null
13 #if defined(__clang__)
14 Clang __clang_major__ __clang_minor__ __clang_patchlevel__
Masahiro Yamadaaec6c602021-01-16 08:35:42 +090015 #elif defined(__GNUC__)
16 GCC __GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__
17 #else
18 unknown
19 #endif
20 EOF
21}
22
23# Convert the version string x.y.z to a canonical 5 or 6-digit form.
24get_canonical_version()
25{
26 IFS=.
27 set -- $1
28 echo $((10000 * $1 + 100 * $2 + $3))
29}
30
31# $@ instead of $1 because multiple words might be given, e.g. CC="ccache gcc".
32orig_args="$@"
Miguel Ojeda2f7ab122021-07-03 16:42:57 +020033set -- $(get_c_compiler_info "$@")
Masahiro Yamadaaec6c602021-01-16 08:35:42 +090034
35name=$1
36
Masahiro Yamadae24b3ff2021-03-16 01:12:55 +090037min_tool_version=$(dirname $0)/min-tool-version.sh
38
Masahiro Yamadaaec6c602021-01-16 08:35:42 +090039case "$name" in
40GCC)
41 version=$2.$3.$4
Masahiro Yamadae24b3ff2021-03-16 01:12:55 +090042 min_version=$($min_tool_version gcc)
Masahiro Yamadaaec6c602021-01-16 08:35:42 +090043 ;;
44Clang)
45 version=$2.$3.$4
Masahiro Yamadae24b3ff2021-03-16 01:12:55 +090046 min_version=$($min_tool_version llvm)
Masahiro Yamadaaec6c602021-01-16 08:35:42 +090047 ;;
48ICC)
49 version=$(($2 / 100)).$(($2 % 100)).$3
Masahiro Yamadae24b3ff2021-03-16 01:12:55 +090050 min_version=$($min_tool_version icc)
Masahiro Yamadaaec6c602021-01-16 08:35:42 +090051 ;;
52*)
Miguel Ojeda2f7ab122021-07-03 16:42:57 +020053 echo "$orig_args: unknown C compiler" >&2
Masahiro Yamadaaec6c602021-01-16 08:35:42 +090054 exit 1
55 ;;
56esac
57
58cversion=$(get_canonical_version $version)
59min_cversion=$(get_canonical_version $min_version)
60
61if [ "$cversion" -lt "$min_cversion" ]; then
62 echo >&2 "***"
Miguel Ojeda2f7ab122021-07-03 16:42:57 +020063 echo >&2 "*** C compiler is too old."
Masahiro Yamadaaec6c602021-01-16 08:35:42 +090064 echo >&2 "*** Your $name version: $version"
65 echo >&2 "*** Minimum $name version: $min_version"
66 echo >&2 "***"
67 exit 1
68fi
69
70echo $name $cversion