Update minimum macOS supported to 11.0

[Neil]

Xcode wants to increase the minimum supported version of macOS to 11.0 which was released in November 2020. This directly modifies the project files to mark the built packages to require 11.0 and does not stop the source code from working on earlier versions of macOS. Support for older operating systems rots as there are fewer compatibility checks. This affects both Scintilla and Lexilla.

If 11.0 is too new, then the minimum version could be bumped to 10.15 which was the last 10.x. The last minimum version bump was in 2023 to 10.13.

Neil

[Mitchell]

Hi,

> On Apr 28, 2026, at 8:49 PM, Neil <scintil...@gmail.com> wrote:
>
> Xcode wants to increase the minimum supported version of macOS to 11.0 which was released in November 2020. This directly modifies the project files to mark the built packages to require 11.0 and does not stop the source code from working on earlier versions of macOS. Support for older operating systems rots as there are fewer compatibility checks. This affects both Scintilla and Lexilla.
>
> If 11.0 is too new, then the minimum version could be bumped to 10.15 which was the last 10.x. The last minimum version bump was in 2023 to 10.13.

11.0 is reasonable. As you said, it’s been 3 years since the last bump and 11.0 hasn’t been receiving security updates for what? 2 or 3 years?

Mitchell

[Neil Hodgson]

This will likely be updated June or July after Apple Worldwide
Developers Conference when the next major release of Xcode comes out
so that it's a clean build then.

Neil

[chinh...@gmail.com]

Xcode 27 beta has a minimum deployment target requirement of 12.0. Intel support has also been dropped.

[Neil]

Chinh:

Xcode 27 beta has a minimum deployment target requirement of 12.0. Intel support has also been dropped.

Apple's obsolescence cadence is more aggressive than I'd like.

Unless there are significant problems with others using Xcode 27 beta, I'll delay a little until Xcode 27 is fully released then update to target macOS 12.0.

Neil