problem compiling with clang

[geochrist]

I'm getting the following error message when trying to include this header file when compiling with clang

/Users/gjchen/projects/tau/tau2020/github/dctk/../Parser-SPEF/parser-spef/parser-spef.hpp:62:8: error:
no template named 'optional' in namespace 'std'
std::optional<std::pair<float, float>> coordinate;

gjchen% clang++ -v
Apple clang version 11.0.0 (clang-1100.0.33.8)
Target: x86_64-apple-darwin18.7.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

Any idea what is going on?

[tsung-wei-huang]

Right now we only take G++ 8.2 version at least :) Apple clang is not supported.

[geochrist]

Ok. I’ll try to fix my GCC install so I can use it. George

…

On Oct 27, 2019, at 12:17 PM, Tsung-Wei Huang ***@***.***> wrote: Right now we only take G++ 8.2 version at least :) Apple clang is not supported. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe.

[geochrist]

I'm unable to fix my gcc, due to a conflict between Apple and MacPort infrastructure.

I went back to clang and got it running further by moving to c++1z standard, but my clang compiler doesn't support experimental::filesystem::path until a later version. Would it be possible to re-write the code so that it replaces experimental::filesystem::path with char*? I've got some code that seems to compile and run OK at this point. I can give you the changes when they are fully tested.