make iOS creates a macOS library

[JakubMazur]

I'm trying to compile for iOS with make ios, but when I'm trying to use it with Xcode I'm getting error:

1. cloning repo
2. from a build running make ios
3. getting a libmusicxml2.a file from build/lib
4. copy exports.h and libmusicxml.h to Xcode and linking it with bridging header
5. I've also tried to make from iosdir but doesn't seems to make any difference

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Building for 'iOS', but linking in object file (.../libmusicxml/libmusicxml2.a[2](factory.cpp.o)) built for 'macOS'

I also tried to build for Xcode with cmake -G Xcode but then (probably rightfully) scheme ALL_BUILD has also only macOS target.

I've tried to integrate then this library build for macOS with separate target in Xcode for macOS and it's working without issues. There is a way to compile this for iOS?

[JakubMazur]

This is (kind of) working:
https://stackoverflow.com/a/61317610/1317394

When I compile with

cmake -G Xcode -B ios \
    -DCMAKE_SYSTEM_NAME=iOS \
    -DCMAKE_Swift_COMPILER_FORCED=true \
    -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0

I can build on either simulator or device (can't create universal lib with that).

[arshiacont]

To use this for both iOS and iOS-simulator you'd need to do either:

• compile a separate .a for iOS and iOS simulator and in your host Xcode project link separately to the two libs for given platforms (Xcode provides the option)
• More modern approach: write a script that compiles both as framework and then make a XCFramework out of it and just add that your project.

I have a script for the second that I can share next week when I get back to my build system.