[FFmpeg-devel] [PATCH 2/3] configure: speedup x2-x8

[avih]

For overview see:
http://ffmpeg.org/pipermail/ffmpeg-devel/2018-August/233665.html

Attached is patch 2/3 which was at "main.patch" of that message.

print_enabled_components() was invoking sed about 350 times on one
file. This is never instant but takes many seconds where fork is
slow (Windows). Invoke sed only once instead = x4-x10 speedup.
 

    On Saturday, August 25, 2018 7:55 PM, Timo Rothenpieler <timo at rothenpieler.org> wrote:
 

 Please use git send-email to send your patches, or at least send each 
patch, created by git format-patch, as individual attachment. Your files 
seem to contain multiple patches one after another, which makes them 
very hard to follow.

But nice work! Let's hope this does not cause any regressions.
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