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I have a C++ program that uses various C++14 features, and have been asked to compile it for a CentOS 6 system. GCC doesn't support C++14 features on CentOS 6 as far as I can tell (and based on compiler errors).

Is it possible to compile for C++14 on CentOS 6?

Assuming someone has created a whole compatibility layer for compiling C++14 on CentOS6, could I even distribute that executable? Or would the target machine ALSO have to install a compatibility layer?

I recall reading (years ago) about how to use different development toolchains at once, including I think those later than what was supported by the repos for the OS. Just can't recall details.

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  • What version of gcc do you have installed? Looks like you need at least 5. gcc.gnu.org/projects/cxx-status.html#cxx14 Commented Jan 3, 2022 at 20:56
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    CentOS 6 has seen its last maintenance update in November 2020, i.e. over a year ago. I would have to hear a very convincing argument from the person doing the asking why I should bother compiling a binary for a dead OS version. Not just for the reasons stated in this question, but for safety and sanity reasons. Commented Jan 3, 2022 at 21:25
  • @DevSolar I deal with this at work. Containers have been a blessing and curse in this regard. Also, that'd be my answer, if CentOS 6 could support containers. I don't think it can even do that. Commented Jan 3, 2022 at 21:59
  • @RetiredNinja I'm running gcc 4.4.7 (last available from CentOS repo). Commented Jan 3, 2022 at 22:13
  • @DevSolar - My customer is pretty tech savvy so I assume they have carefully thought through their decision to use CentOS 6. (Not all customers appreciate that type of feedback) Commented Jan 3, 2022 at 22:14

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No, it is not possible to compile C++14 on CentOS 6. Only some C++11 features are available on CentOS 6.

CentOS runs GCC 4.4.7 where-in C++14 features start to become available with GCC 4.9 and higher.

The Boost libraries may be used to replicate some modern C++ features if on an outdated GCC version.

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It is completely possible to compile gcc 5 on CentOS 6 and get the needed support. I believe there is even a dev repo where you can just yum install a newer gcc. However, the real issue is a dead OS being used in a production environment.
What does compilation have to do with production? There is no "real issue" here.

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