[v3] Support Mac Catalyst

[robertying]

Proposal

It seems starting from v3, we are using pre-compiled frameworks for iOS and macOS builds.

However, the library is only shipped with the following:

• macos-arm64_x86_64 (native macOS)
• ios-arm64_x86_64-simulator
• ios-arm64

To build for Mac Catalyst which is a special iOS target, we would need a framework built for ios-arm64_x86_64-maccatalyst.

v2 had support for Mac Catalyst out of the box, probably due to it being built from source. Could we add Mac Catalyst support to v3 as well? Thanks!

Alternatives

No response

Implementation Details

Same as the native macOS macos-arm64_x86_64 build, the framework probably needs to be symlinked, like

async-storage/scripts/build-native-lib.sh

Lines 57 to 66 in 079c767

	# symlinks
	rm "$MAC_OS_FRAMEWORK/Headers" "$MAC_OS_FRAMEWORK/Modules" "$MAC_OS_FRAMEWORK/Resources" "$MAC_OS_FRAMEWORK/SharedAsyncStorage"
	cp -rL "$MAC_OS_FRAMEWORK/Versions/A/Headers" "$MAC_OS_FRAMEWORK/"
	cp -rL "$MAC_OS_FRAMEWORK/Versions/A/Modules" "$MAC_OS_FRAMEWORK/"
	cp -rL "$MAC_OS_FRAMEWORK/Versions/A/Resources" "$MAC_OS_FRAMEWORK/"
	cp -L "$MAC_OS_FRAMEWORK/Versions/A/SharedAsyncStorage" "$MAC_OS_FRAMEWORK/"
	# clear versions, not needed
	rm -r "$MAC_OS_FRAMEWORK/Versions"

.

Additional Context

No response

[krizzu]

Hey @robertying ,

The mac catalyst seems is not yet supported by kmp, which is why the binary is not there, so supporting it in scoped storages is not an option, similar to vision os.

However, what I could do, is to omit compilation of framework for catalyst (similar to what I did with vision os), so that v3 is still usable, but it's backed by previous implementation (so no scoped storages)

[robertying]

Thanks @krizzu for your response.

I actually tried to omit the precompiled frameworks and instead build from source, but I didn't know how to handle the SharedAsyncStorage import that is from the prebuilt.

If you could support legacy implementation for Mac Catalyst on v3, I think it's still a win as there will be less fragmentation of dependencies for devs to manage.