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Re: [PATCH/RFC] Fix LD test FAIL: weak symbols on Cygwin
2009/3/20 Dave Korn <dave.korn.cygwin@googlemail.com>:
> Kai Tietz wrote:
>
>>
>> Yes, it's true what Vincent found. But there is a documention about
>> this in pecoff_v8.doc. See section "29 Auxiliary Format 3: Weak
>> Externals". I think this is the best point to start from.
>
>
> ?Yes, that's my starting point of course, but it's not enough on its own. ?It
> doesn't really explain the IMAGE_WEAK_EXTERN_SEARCH* semantics very clearly.
>
> ? ?cheers,
> ? ? ?DaveK
>
Ok, as far as I could find out is
IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY has nearly the same meaning as weak
symbols are described in SVR4 ABI (page 4-27). An undefined weak
symbol is not considered to be a reference when pulling files out of
an archive.
IMAGE_WEAK_EXTERN_SEARCH_LIBRARY means something like this. An
undefined weak symbol is considered to be a reference when pulling
files out of an archive. (or as pecoff spec says: "indicates that a
library search for sym1 should be performed."
Maybe I am wrong by that.
Cheers,
Kai
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