10.15 Xcode version: Buildbot, vs. GitHub CI

[Jason Liu]

A very similar situation occurs on macOS 10.11: It's fairly common to
install Xcode 8.2.1 on macOS 10.11, and Xcode 8.2.1 comes with the macOS
10.12 SDK. So, in my upcoming fixes that allows godot to compile on older
macOSes, I have the following check:

if {${os.platform} eq "darwin" && ${os.major} <= 15} {
    <code for some other stuff>
    set sdks_dir ${developer_dir}/Platforms/MacOSX.platform/Developer/SDKs
    set add_appkit_wrapper yes
    if {![catch {file lstat $sdks_dir/MacOSX10.12.sdk finfo}]} {
        set add_appkit_wrapper no
    }
}

Thus, if the Portfile detects the situation of the macOS 10.12 SDK being
installed on macOS 10.11, then it won't add my AppKit compatibility wrapper
file.

I suspect a similar technique might need to be put in place to account for
Xcode 11 vs 12 being installed on macOS 10.15.

-- 
Jason  Liu


On Wed, Dec 1, 2021 at 10:32 AM Chris Jones <jonesc at hep.phy.cam.ac.uk>
wrote:

> Hi,
>
> On 01/12/2021 3:18 pm, Christopher Nielsen wrote:
> > Just encountered an interesting situation, where a Swift-based port
> builds successfully via 10.15 CI, but fails on our buildbot.
> >
> > This appears to be related to Xcode versions: Presently our 10.15
> buildbot has Xcode 11.7, whereas 10.15 CI has Xcode 12.4.
> >
> > This brings up two questions:
> > * Would it be feasible to update our 10.15 buildbot to a newer Xcode
> release? Or are there certain ports/situations that necessitate remaining
> with 11.7?
> > * Do we have control over the Xcode version used for GitHub CI, or is
> 12.4 the only option?
> >
> > Ideally both should utilize the same Xcode 12 release, specifically one
> that still ships with the 10.15 SDK. So the choices would be 12.0, 12.0.1,
> and 12.1.
> >
> > Thoughts?
> >
>
> MacPorts cannot mandate what Xcode a user has installed. Both Xcode 11
> and 12 are valid options to have on macOS10.15 (and, I might be wrong
> here, but from memory Ryan specifically keeps the builder on Xcode 11 to
> avoid issues with Xcode 12 also shipping the macOS11 SDK).
>
> So basically the port needs to handle both, in whatever way is
> appropriate. I guess this is the new mint port
>
>
>
> https://github.com/macports/macports-ports/commit/cfc6d01aa685a5a9cc30264bc2a7e9d1badf587e
>
> I see there is a check in there on the Darwin version. It sounds this
> this should be changed to a test specifically on the Xcode(CLT) versions
> installed, if the requirement is really Xcode 12 and above, and not
> really the Darwin version.
>
> Chris
>
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