IOS required SDK

[Paul Dupuis]

No need to partition drives with VMs. You *do* need a good chunk of free 
disk space, for example for Catalina, you probably want a minimum of a 
50GB "drive" (a VM file on disk) and for Big Sur, I went to 100GB, but I 
have a 1TB hard disk.

We also have a MacMini here with a bunch of external USB disk drives and 
a ton of partitions each with a different macOS from 10.9 up to 10.15, 
but rebooting to a different macOS version for testing is a pain in the 
butt compared to VMs.

All you really need is (1) VirtualBox for macOS and (2) installation 
file(s) for the macOS's you want to install. For current and most recent 
OS, these can usually be downloaded from the Apple Developer site. For 
anything older, you have to do some hunting as Apple does not have an 
archive of older version of macOS for developers (that I can find!) It 
is easiest if the installer for macOS is an .iso disk image. Then you 
run VirtualBox, create a new VM, set it for macOS, create a disk of the 
suitable size. Mount the .iso image file as a "virtual" disc drive and 
start it up and follow the macOS install instructions. (there is devils 
in the details, but that really is the jist)


On 4/23/2021 5:43 PM, J. Landman Gay via use-livecode wrote:
> Thanks Paul, I was wondering about a VM. I've scanned Oracle's docs 
> for all of 10 minutes but it looks a bit complicated. Did you need to 
> partition your hard drive? It also says to put the OS intaller on a 
> DVD but of course we don't have DVD drives any more. Does the mounted 
> OS install image work?
>
> On 4/23/21 4:13 PM, Paul Dupuis via use-livecode wrote:
>> On 4/23/2021 5:02 PM, J. Landman Gay via use-livecode wrote:
>>> Apple will require SDK 14 for new or updated iOS apps. Due to 
>>> incompatible 32-bit software, I'm still on Mojave. Does this mean I 
>>> need to update to Big Sur or Catalina before I can build for iOS?
>>>
>>> I don't suppose there's any way to do it on Mojave? I've been 
>>> dreading this...
>>>
>>
>> I run Mojave on a Macbook Pro and use VirtualBox to have a Catalina 
>> and Big Sur VMs as I too have 32 bit software I want to be able to 
>> continue to run. I do macOS development under Mojave and only use the 
>> Catalina and/or Big Sur VMs for testing or builds (if for some reason 
>> I need to check a build under one of those OSes. Both Catalina and 
>> Big Sur work with VirtualBox. VMs are of course slower, but he 
>> ability to back them up, clone them, restore to a specific save point 
>> and such I think outweigh  the speed as a developer tool.
>>
>>
>>
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>