[geokon]

I think this was maybe true a decade ago...

Having to contact them to get a license is a pain, and in benchmarks there are on-par or better libraries available. The tuning steps are baroque and if you really care about performance that much.. You'd probably look at GPU solutions

Are you expecting to do the tuning step during the build?

Last I checked their arm support was terrible.. But maybe that's changed

[PaulDavisThe1st]

What I'm expecting: we have our own ad-hoc "build system" which is a shell script that configures, builds and installs all our dependencies (about 80 libs). That includes tuning the configure step of several different libraries.

Any build system that won't allow us to do this is unusable.

[PaulDavisThe1st]

Also, why do you "have to contact them to get a license" ? It's intentionally an open source library, release under the GPL. If you want to use it in a closed source context, sure, you'd probably look elsewhere.