[oneDPL] Add requirements to header files and specification version macro

[akukanov]

No description provided.

[timmiesmith]

I have one small suggested changed in wording, otherwise this looks good to me.

[danhoeflinger]

LGTM.
Obviously, we need to resolve the discussion of ONEAPI_SPEC_VERSION vs ONEDPL_SPEC_VERSION, once that is resolved I think this is good to go.

[akukanov]

Obviously, we need to resolve the discussion of ONEAPI_SPEC_VERSION vs ONEDPL_SPEC_VERSION, once that is resolved I think this is good to go.

@danhoeflinger I think the macro name is not the point of the discussion. That question was covered at #561 (comment) and resolved to use library-specific prefixes. The oneMKL team went even further and decided to use domain-specific prefixes - see the code in #561.

So the discussion above is not about naming the macro but about the wording around it.

[danhoeflinger]

@danhoeflinger I think the macro name is not the point of the discussion. That question was covered at #561 (comment) and resolved to use library-specific prefixes. The oneMKL team went even further and decided to use domain-specific prefixes - see the code in #561.

So the discussion above is not about naming the macro but about the wording around it.

Aha, yes. Understood. Thanks for the pointer to that conversation.

[timmiesmith]

Looks good to me. Thank you.