Comment 7 for bug 1597594

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tmodes (tmodes) wrote :

Hi Terry,

CMake searches for the optional header from https://github.com/akrzemi1/Optional
(mentioned in the NEWS file).
In future the checks needs to be extended to take also C++17 <optional> header into account (like configure does it already).
AFAIK the current used compilers don't support this header (or is the header already in gcc 6.x from Fedora 24?)