[oe] 'LIBC' variable clashes with perl variable

[Koen Kooi]

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On 11-07-10 19:01, Phil Blundell wrote:
> On Sun, 2010-07-11 at 15:45 +0200, Koen Kooi wrote:
>> Perl (among others) uses the 'LIBC' variable to point its linker to
>> libc.so.6, which fails due to OE redefing LIBC.
>>
>> Any objections to renaming LIBC to TARGET_LIBC in OE?
> 
> How is perl getting to see that variable?  I don't think it ought to be
> exported.
> 
> I don't have any problem with renaming it, though I do wonder whether it
> would be better to just abolish it altogether in favour of inspecting
> ${HOST_OS}.

LIBC is currently used to set it for bitbake, e.g.:

MACHINE=beagleboard LIBC=eglibc bitbake foo
MACHINE=beagleboard LIBC=uclibc bitbake foo

Which also means we can't use any '_', so it would be TARGETLIBC or HOSTOS.
I'm not sure what the impact would be when we would unexport it, though.

regards,

Koen
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