I needed a support for CR3 Canon 90D on Linux OpenSuse

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How to use cr3 from canon 90D?

Darktable 3.7.0
exiv2 0.27.4

Serge

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Linux, Windows or OS X?

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Linux OpenSuse tumbleweed

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Just build it as usual? You can follow the instructions on GitHub - darktable-org/darktable: darktable is an open source photography workflow application and raw developer

Or perhaps Install package graphics:darktable:master / darktable

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our exiv2 package has BMFF support enabled
and we have master package which should have you covered. (if master has all the changes to support that camera)

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One needs the rawspeed patches to support cr3 from here: GitHub - cytrinox/rawspeed at canon_cr3

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well we dont package those and i would wait for @LebedevRI to merge them.