.warning directives in Makefile

[Sergey Matveychuk]

Mikhail Teterin wrote:
> 
>> But I'd like remind .warning directive pollutes stderr
> Warnings are NOT pollution...
>> and discouraged portupgrade which was designed to catch messages from 
>> stderr and rises errors.
> I'd say, the portupgrade needs fixing, if it does, indeed, choke on 

Well, only imagemagic and ghostscript* use .warning. It is NOT a common 
way to print warnings.
Why do you think portupgrade needs fixing?

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