Qiita Conference 2025

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CentOS7でC++11が使えない原因

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CentOSではSoftware Collectionからdevtoolset-10をインストールすればg++10がインストールできる。
しかしながら実際はC++11の機能はほとんど使えない。これは--with-default-libstdcxx-abi=gcc4-compatibleでコンパイルされており、古いlibstdc++を使うようになっているため。
_GLIBCXX_USE_CXX11_ABIをコンパイル時に定義しても無駄。

参考:
https://stackoverflow.com/questions/47951367/d-glibcxx-use-cxx11-abi-1-ineffective-for-devtoolset-7-on-centos-7/50459937#50459937
https://bugzilla.redhat.com/show_bug.cgi?id=1546704

使いたければ自分でgccをビルドするしか無い。

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Qiita Conference 2025 will be held!: 4/23(wed) - 4/25(Fri)

Qiita Conference is the largest tech conference in Qiita!

Keynote Speaker

ymrl、Masanobu Naruse, Takeshi Kano, Junichi Ito, uhyo, Hiroshi Tokumaru, MinoDriven, Minorun, Hiroyuki Sakuraba, tenntenn, drken, konifar

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