[webkit-dev] update GCC version?

[Alex Christensen]

We are looking into using more C++14 features in WebKit, which would require increasing the minimum supported compiler versions.  For example, Yusuke’s patch in https://bugs.webkit.org/show_bug.cgi?id=165093 <https://bugs.webkit.org/show_bug.cgi?id=165093> compiles successfully in clang and I verified it compiles successfully in VS2017RC, but it does not compile successfully in the minimum supported GCC version on linux because of lack of support for C++14 extended constexpr (see https://isocpp.org/wiki/faq/cpp14-language#extended-constexpr <https://isocpp.org/wiki/faq/cpp14-language#extended-constexpr> )

We are not ready to require VS2017 just yet.  It hasn’t even been fully released.  But there are many C++14 features that are not supported in VS2015 (see https://msdn.microsoft.com/en-us/library/hh567368.aspx <https://msdn.microsoft.com/en-us/library/hh567368.aspx> and https://www.visualstudio.com/en-us/news/releasenotes/vs2017-relnotes <https://www.visualstudio.com/en-us/news/releasenotes/vs2017-relnotes> ) and we would like to use these features in WebKit.

Would the linux community be able to increase the minimum supported GCC version?
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