考虑在Centos 7虚拟机或容器中构建和发布C++项目时的情况.默认gcc为Centos 7是4.8.为了允许开发人员使用现代C++,最新版本gcc(例如6.3)安装在作为CI服务器运行的Centos 7中.这提供了-std=c++14支持.
[builder@f7279ae9f33f build (master %)]$ /usr/bin/c++ -v 2>&1 | grep version
gcc version 4.8.5 20150623 (Red Hat 4.8.5-28) (GCC)
[builder@f7279ae9f33f build (master %)]$ /opt/rh/devtoolset-6/root/usr/bin/c++ -v 2>&1 | grep version
gcc version 6.3.1 20170216 (Red Hat 6.3.1-3) (GCC)
export CXX=/opt/rh/devtoolset-6/root/usr/bin/c++
make all -j4
...
这是编译和链接命令的简短示例:
[ 78%] Building CXX object CMakeFiles/ucsdos.dir/src/merge_operator_string.cpp.o
/opt/rh/devtoolset-6/root/usr/bin/c++ -Ducsdos_EXPORTS -I/home/builder/src/dos/libucsdos/./src -I/home/builder/src/dos/libucsdos/./include -I/home/builder/src/dos/libucsdos/build/schema/cpp -I/home/builder/src/dos/libucsdos/build/schema -isystem /usr/local/include -O2 -g -DNDEBUG -fPIC -frtti …