Re: Once more, C++11 and older 'base' compilers

[Jason Bacon <bacon4000%gmail.com@localhost>]

On 08/09/17 12:57, coypu%sdf.org@localhost wrote:
> Hi,
>
> I'm proposing this option:
> per OS/arch combos _TARGET_HAS_PKGSRC_GCC.
>
>
> if _TARGET_HAS_PKGSRC_GCC.
> USE_LANGUAGE=c++   =>   GCC_REQD+=4.8
>
> We will bump this if packages with more than 500-1000 dependencies
> requires more. No going back to pre-4.8 for C++.
>
>
> else
> USE_LANGUAGE=c++11 =>  GCC_REQD+=4.8
> (??? C++14, C++17, C++2a)
>
> if CC_VERSION < GCC_REQD
> => PKG_FAIL_REASON="Not in _TARGET_HAS_PKGSRC_GCC, yadda yadda to
>     override, possibly build from a system compiler"
>
>
>
> Also for both, possibly provide a bootstrap warning about GCC<4.8.
>
> currently I can say for netbsd/x86 we can safely add
> _TARGET_HAS_PKGSRC_GCC, presumably sunos and linux too.

Can you clarify how _TARGET_HAS_PKGSRC_GCC gets set?  Is this built into 
the bootstrap scripts and set globally for selected OSs and ARCHs?  Can 
users add it to mk.conf for other platforms?

How do gcc48 and dependencies get exempted so they can build with the 
system compiler?

Thanks,

    JB

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