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

Michael Niedermayer michael at niedermayer.cc
Mon Aug 27 22:56:37 EEST 2018


On Mon, Aug 27, 2018 at 11:41:26AM -0300, James Almer wrote:
> On 8/25/2018 6:15 PM, Michael Niedermayer wrote:
> > On Sat, Aug 25, 2018 at 06:11:10PM +0000, avih wrote:
> >> For overview see:
> >> http://ffmpeg.org/pipermail/ffmpeg-devel/2018-August/233665.html
> >>
> >> Attached is patch 3/3 which was at "main.patch" of that message.
> >>
> >> After the previous speedups, configure spent 20-60% of its runtime
> >> at check_deps(). It's particularly slow with bash. After some local
> >> optimizations - mainly avoid pushvar/popvar and abort early in one
> >> notable case (empty deps), it's now x4-x25 faster.
> >>
> > 
> > patches 1-3 work here fine on linux x86-64 / 32, arm, mips, wine+mingw32/64
> 

> Just pushed them.

thanks!

[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

If you fake or manipulate statistics in a paper in physics you will never
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