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apache--brpc/tools/print_gcc_version.sh
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2026-07-13 13:29:29 +08:00

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#!/usr/bin/env bash
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
while read -r line; do
val=$(echo "$line" | awk '{print $3}')
if [[ $line =~ __clang__ ]]; then
CLANG=${val}
elif [[ $line =~ __GNUC__ ]]; then
GNUC=${val}
elif [[ $line =~ __GNUC_MINOR__ ]]; then
GNUC_MINOR=${val}
elif [[ $line =~ __GNUC_PATCHLEVEL__ ]]; then
GNUC_PATCHLEVEL=${val}
fi
done < <("${CXX:-c++}" -dM -E - < /dev/null | grep "__clang__\|__GNUC__\|__GNUC_MINOR__\|__GNUC_PATCHLEVEL__")
if [ -n "$GNUC" ] && [ -n "$GNUC_MINOR" ] && [ -n "$GNUC_PATCHLEVEL" ]; then
# Calculate GCC/Clang version
GCC_VERSION=$((GNUC * 10000 + GNUC_MINOR * 100 + GNUC_PATCHLEVEL))
if [ -n "$CLANG" ] && [ "40000" -lt $GCC_VERSION ] && [ $GCC_VERSION -lt "40800" ]; then
# Make version of clang >= 4.8 so that it's not rejected by config_brpc.sh
GCC_VERSION=40800
fi
echo $GCC_VERSION
else
echo 0
fi