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I develop an Ubuntu Core app on a x86 system for an arm target with snapcraft.

The snapcraft.yaml contains architectures: [armhf] and snapcraft generated a .armhf.snap file. That seems to be OK.

But if a part contains an Ubuntu dependency using stage-packages, the resulting snap contains only x86_64 libs.

How can it fix this?

6

Unfortunately Snapcraft doesn't yet support cross-building. In order to build a snap for x86 it needs to be run on an x86 host; for arm, an arm host.

Indeed, as mentioned by didrocks, you can run Snapcraft directly on the Snappy device by using the Classic Dimension on Ubuntu Core 16.04.

0

Note also that Snappy Ubuntu Core 16.04 (still in development) have a classic dimension which enables you to directly build on the device, so you won't have cross-arch issues anymore with this.

0

You can also install docker app, and import from ubuntu image from docker hub, then you will have the environement for native compile.

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