What version of gcc is used

[shenw000]

Hi,

I attempted to use the following command to install CTCWordBeamSearch. pip install . But there are a lot of compiler errors. What version of the gcc shall I use to compile the CTCWordBeamSearch? I am using gcc 5.4 running on Ubuntu 16.04

Thanks, shen000

[githubharald]

Hi, I think C++11 should be enough, not sure now if some C++14 feature was used. Can you post the errors (at least the first few errors, the rest are usually just some aftereffect of the first one).

One thing you could try is to explicitly tell the compiler you want C++11 support in the setup.py file: https://github.com/githubharald/CTCWordBeamSearch/blob/master/setup.py#L8

Add this argument extra_compile_args=['-std=c++11'] to the Extension.

[shenw000]

Thank you, githubherald! Yes, I changed to gcc version from gcc 5.4 to gcc 7.5, and it now compiles without any problem. What's surprising to me is gcc 5.4 also supports both C++14 and C++11, at least according to the documentations. Thank you!

[githubharald]

maybe gcc 5.4 really needs to activate C++11/14 using some setting like -std=c++11. But good to hear it finally worked.

[MorganFujimaka]

export CFLAGS='-std=c++11' worked for me.