Bump macOS Xcode baseline to 11?

[Stephan Bergmann]

On 17/02/2020 11:59, Stephan Bergmann wrote:
> Our baseline on macOS is currently Xcode 9.3 (see 
> <https://gerrit.libreoffice.org/plugins/gitiles/core/+/b4f666f2e677b05cab8395fe7972b45b15f60c3f%5E!/> 
> "Bump Xcode baseline to 9.3").
> 
> However, I assume that most, if not all Mac that are used at least by 
> TDF to do LO master builds are using current Xcode 11:
> 
> For one, I assume that 
> <https://gerrit.libreoffice.org/plugins/gitiles/core/+/f67e5ef9a5c71f3b35b1c67eb72794e44cc15410%5E!/> 
> "Drop broken filter-out of -bind_at_load for Executable_soffice_bin on 
> macOS" would have failed with ld in Xcode < 11 not supporting 
> -platform_version.  Yet, the corresponding Gerrit Jenkins build 
> <https://ci.libreoffice.org/job/gerrit_mac/54097/> succeeded, and I got 
> no reports about failed macOS builds at 
> <https://tinderbox.libreoffice.org/MASTER/status.html> after the above 
> commit and before 
> <https://gerrit.libreoffice.org/plugins/gitiles/core/+/b7fd89100d8653dc73955780358fe31d38b68ebf%5E!/> 
> "tdf#122218: Baseline Xcode 9.3 ld presumably doesn't support 
> -platform_version".
> 
> For another, my question
> 
>> Feb 14 10:28:41 <sberg> cloph_away, all: do we have any macOS build 
>> machines that actually run the build baseline, Xcode 9.3 (and ideally 
>> macOS 10.13.2, but that's only a bonus)?
> 
> on #libreoffice-dev got no answer.
> 
> Now, as seen with 
> <https://gerrit.libreoffice.org/plugins/gitiles/core/+/b7fd89100d8653dc73955780358fe31d38b68ebf%5E!/> 
> "tdf#122218: Baseline Xcode 9.3 ld presumably doesn't support 
> -platform_version" mentioned above, it would be useful if we could bump 
> the macOS baseline to Xcode 11.
> 
> The current Xcode version appears to be 11.3.1.  I have no idea whether 
> we would need/want to explicitly require Xcode 11.3 or be happy with 
> just Xcode 11, but if we bump anyway it would probably make sense to 
> bump to Xcode 11.3, just to be on the safe side.  (See the "whether 
> Xcode is new enough" check in configure.ac.)
> 
> According to the Mac App Store, the minimum system requirement for the 
> current Xcode 11.3.1 is "macOS 10.14.4 or later".  Unless prior versions 
> of Xcode 11 would serve our needs too and had less demanding 
> requirements, that would probably mean that we would need to bump our 
> build baseline too, from 10.13.2 to 10.4.4.
> 
> (For iOS, our baseline is documented as Xcode 9.3, too.  I have no 
> opinion whether or not we would want to bump that as well.  At least for 
> the commit mentioned above it is not relevant, as that is macOS-only.)
> 
> Any opinions on bumping the macOS build baseline to Xcode 11.3 and macOS 
> 10.4.4?

"10.14.4" of course (here and above)