On Thursday November 09 2017 17:41:39 Joseph Myers wrote: >Your __APPLE__ conditional would appear to condition something on whether >the *host* is an Apple system. If you wish to change the default for
Evidently. As I said, there are a number of settings that will (probably) need to be determined at the configure stage. I must admit I hadn't thought about cross-compiling (or cross-building) at all. My first concern has been to get the feature working so I can test it. (I, and potentially other Mac users; my patch is currently set up to integrate with the MacPorts package for gcc7; a bit of wide-spread testing in the wild cannot be a bad thing before incorporating this, right? :)) I wouldn't particularly mind in fact if making libc++ the default runtime library were made through an explicit configure option. That might even be better for users of libc++-based systems who have integrated g++ and its incompatible runtime into their workflows. I expect the powers that be on here will have a better educated opinion on this. >All options should be accessible by names starting with "--", meaning the >new options should have such aliases added as well. Ok, I'll have a look how that would work, I was expecting that the check for "this option with an extra dash" would be done in code. I hope I'm not violating any rules in processing the same options in 2 locations (once to know where to look for C++ headers, once to know which runtime lib to link)? R.
