Have configure.ac tolerate unregistered builds or new platforms

[Gabor Greif]

I am all-for a new switch (say "--with-unregisterised").

Gaby, should I build in one on my fork?

Cheers,

    Gabor

On 1/18/12, Ian Lynagh <igloo at earth.li> wrote:
> On Mon, Jan 16, 2012 at 12:42:19PM -0600, Gabriel Dos Reis wrote:
>>
>>   -- have both checkArch and checkOS not abort configuration
>>      they should normalize arch and os known to be troublesome
>>      and report ArchUnknown and OsUknown for arches and OSes
>>      not known to GHC.
>
> The rationale for the current behaviour is that it will catch typos and
> incorrect arch names (e.g. using x86 rather than i386). The assumption
> is that people will make typos more frequently than there will be ports
> to new arches (as there are a limited number of arches to which one
> could port), and that it's more useful to catch the typos (I'm not sure
> OTTOMH what happens if you typo otherwise; you might end up with a
> complete unregisteriesd build. By contrast, when porting to a new
> platform, configure stops immediately and tells you what's wrong).
>
>
> Thanks
> Ian
>
>
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