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Subject:	Re: Strange errors running gcc tests on Cygwin
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From:	Daniel Santos <daniel DOT santos AT pobox DOT com>
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Date:	Mon, 13 Mar 2017 11:39:31 -0500
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On 03/10/2017 12:56 PM, Achim Gratz wrote:
> Brian Inglis writes:
>> Ensure that all Cygwin dlls including anything you build are included
>> in every rebase, and do an incremental rebase after every build.
> Don't do this, it's not what incremental rebase is for.  I've
> specifically implemented the "ephemeral" option to rebase to temporarily
> deal with DLL in staging directories without polluting the global rebase
> map.  The rebase map is still used if you specify that in order to work
> around the address space used by the installation, but the newl rebased
> libraries don't get recorded there.  Since that rebase is throw-away you
> have to specify all the ephemeral DLL that can potentially collide in
> each invocation of rebase.  That's still easier than doing a full rebase
> once you're done building.

Well this is interesting.  What happens if there is a collision? Will a 
detailed error message exist anywhere (syslogs, NT's event log, etc.)?

So when I run gcc's bootstrap, I'm building dlls that sit (temporarily) 
in the build directory.  If I do not explicitly rebase these, can I end 
up with collisions if I try to use them?

Thanks,
Daniel

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