User information about macOS Mojave

[Ian Wadham]

> On 20 Sep 2018, at 6:04 pm, Chris Jones <jonesc at hep.phy.cam.ac.uk> wrote:
> On 20/09/18 06:35, Ian Wadham wrote:
>>> On 20 Sep 2018, at 3:54 am, Ryan Schmidt <ryandesign at macports.org> wrote:
>>> 
>>> On Sep 19, 2018, at 11:54, Richard L. Hamilton wrote:
>>> 
>>>> So I think that the 10.13 SDK on Mojave, assuming one can still build against it there, may well be a short-term answer.
>>> 
>>> Mojave requires Xcode 10 which contains only the 10.14 SDK.
>>> 
>>> MacPorts doesn't have any particular support at this time for accessing alternative SDKs that the user might have placed in other locations.
>> I am on High Sierra 10.13.6, but the App Store app told me to upgrade to Xcode 10 and command line tools 10 (on 19 Sept 2018), so I did.
>> Now I am getting weird messages from ld when compiling and building some of my own C++ code which is based on KDE libraries obtained from Macports. Here is one example:
>> ld: warning: text-based stub file /System/Library/Frameworks//ApplicationServices.framework/Versions/A/ApplicationServices.tbd and library file /System/Library/Frameworks//ApplicationServices.framework/Versions/A/ApplicationServices are out of sync. Falling back to library file for linking.
>> There are other similar ones relating to CoreGraphics.framework, CoreText.framework, ImageIO.framework, CoreServices.framework and CFNetwork.framework.
>> Also I am getting loads of compiler warning messages about mismatched ‘struct’ and ‘class’ keyword usages and loads of undefined ld symbols re the classes and methods affected. So the whole build fails.
>> I had not edited, compiled or built that code since a few months ago.
>> Have I gone an Xcode version or a compiler version too far? If so, what should I do?
> 
> I've updated and not had any such problems.
> 
> Have you installed / updated the command line tools for Xcode 10 ? They should have come as an update on their own. Does clang give the ame versions as below for you ?

Thanks very much  for your reply, Chris.

I have Xcode and command line tools, both at v 10.0, updated on Wed 19 Sept 2018.

> > clang --version
> Apple LLVM version 10.0.0 (clang-1000.11.45.2)
> Target: x86_64-apple-darwin17.7.0
> Thread model: posix
> InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

I get exactly the same output here for ‘clang —version’, also for ‘/usr/bin/clang’, which is what the CMake command in my build-script is using.

I shall dig further when I have some time.

Thanks again, Ian W.

>>> I worked on a port to standardize a way to provide other SDK versions, but I have not published it yet. MacPorts base changes would also be required to make it easy for ports to request SDKs that didn't come from the primary Xcode installation.
>>> 
>>> 
>>>> But IMO, this is still a good excuse to at least get STARTED on pushing everything toward x86_64, even if workarounds are still mostly possible; because in the next OS version, i386 will likely be gone or severely crippled.
>>> 
>>> Apple has announced that macOS 10.15 will remove all 32-bit support.
>>> 
>>>