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From: Stefan Monnier <monnier@iro.umontreal.ca>
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Subject: Re: [platform-testers] Emacs 26.2 RC1 is out!
Date: Fri, 22 Mar 2019 08:20:14 -0400
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Xref: news.gmane.org gmane.emacs.devel:234546
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>> Hmm... would there be a way to make it so configure accepts options like
>> 
>>     ./configure ... --with-xpm=ifavailable  --with-jpeg=ifavailable ...
>> 
>> so you can use a single script on all systems and it will use xpm
>> where available?
>
> AFAIR, that is how this worked before, and we changed that because it
> would cause builds without image libraries without noticing.

I know but what I'm proposing is to make it possible for the user to
explicitly say "yes, please do just that, even though it has proved
undesirable as a default behavior".


        Stefan