CMake Error in ccsrc/mqbackend/Cmakelist.txt

[notailing-mouse]

When I installed the source code in linux, the following error appeared，

CMake Error in ccsrc/mqbackend/CMakeLists.txt:
Target "mqbackend" requires the language dialect "CXX17" . But the current
compiler "GNU" does not support this, or CMake does not know the flags to
enable it.

I have made sure that my cmake version is 3.24.2, and the compiler is GCC 8.4.0. They do support C++17

[donghufeng]

I guess your computer may have multiple versions of the g++ compiler, you can check the g++ version number used by cmake from the first few lines of the compilation result.