[FFmpeg-trac] #7191(build system:new): Allow to set number of cpu cores for --enable-lto

[FFmpeg]

#7191: Allow to set number of cpu cores for --enable-lto
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             Reporter:  birdie       |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:  build
              Version:  git-master   |  system
             Keywords:  lto          |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by birdie):

 Nope, never.

 From what I've read and understood -flto is a safe [optimization] option
 even though it might give you zero gains in regard to performance which is
 why I prefer to enable it by default. Also I've indeed tested other pieces
 of software and usually -flto nets a small performance boost.


 Of course, if you're a developer you'd want to disable it because it makes
 building significantly slower (and million times slower if you e.g. alter
 just one source file).

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Ticket URL: <https://trac.ffmpeg.org/ticket/7191#comment:9>
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