Which architectures should I include for native libraries with Unity building for iOS?

Unity Engine
,
1

I have a large native c++ library that I include into my Unity project. I’m building a fat binary containing various architectures, but I’m not really sure which I should be including.

Note my application requires iOS 7.1 or greater.

In my library I’m currently including:

arm7
arm7s
arm64

Note, this is currently for a Mono build (not IL2CPP).

Is this correct? Do I need both arm7 and arm7s? Should I be including any others? Will the arm64 even be used with a Mono build?

We will be switching over to IL2CPP once it is more stable, so I’d also be interested in what architectures I should include then also.

Your thoughts?

2

Bump - anyone?

3

Any info is greatly appreciated.

4

You need armv7 and arm64.
armv7s is not supported.

5

Thanks Mantas,

Will the arm64 slice be used even for a mono build? Since I assume that’s all 32 bit anyway - or will it still use a 64bit native library on supported hardware?

Or should I only include armv7 for mono builds and include both armv7 and arm64 for IL2CPP builds?

Thanks again for you help!

6

On Mono builds arm64 slice will be ignored. It will be used only for IL2CPP Universal or ARM64-only builds.

7

Excellent, thanks Mantas!

8

Hey Mantas,

Just checking if this is still the case today?

Regards.