Developers using the Apple Store might have recently noticed a message indiciating that “This app has been built for iOS 11.x. Starting March 2019, all apps will be required to target iOS 12.1 available in Xcode 10.1”
DISCLAIMER: We haven’t yet had the opportunity to submit to the store to see if it accepts it, but the builds now work targetting the higher version.
Normally this is fine, just upgrade Xcode and rebuild. Not so obvious for VSTS (ADOPS?) and Cordova.
Surely Microsoft would just have the latest installed right?
Hmm, well kind of. If you look at the Mac build agent details, there’s versions of ALL major Xcode builds, it’s just that 8.x is set as default.
Hmm, well maybe there’s a build step to set the default version of Xcode for this session?
Not that I could find.
We need to set the version for Cordova, but Cordova doesn’t provide an obvious way of setting the desired Xcode version, and there’s a caveat in the way they do provide. Turns out (after a bunch of googling) that you can set the path where Xcode is found.
And on the command line:
echo Current Xcode version:
echo Selecting Xcode version 10.1
sudo xcode-select -switch /Applications/Xcode_10.1.app/Contents/Developer
echo New Xcode version:
Below shows the area in the VSTS Cordova build step to add. Remember that the VSTS Mac build agent has all lots of versions, and changing the version number seems to correctly target the version specified.
Yay, that was easy!
Build Failed with some cryptic error
Turns out that Xcode has updated their build structure, since version 8 and thus there’s a build flag to use the older system, as shown below.
Builds should succeed!
Again, we’re yet to test these builds actually get to the stores, but at least there’s learnings here :)