On Monday, November 23, 2020 at 11:28:47 AM UTC+1 Ian MacArthur wrote:
Manolo, is there some "best practice" for building an application to run correctly under both OS11 and OSX?
In general, FLTK built under macOS is very widely upward and downward compatible.
For example, I've just built FLTK 1.4 on my macOS 11-running computer using the 10.10 SDK,
and the resulting executable runs on "Big Sur", that is, macOS 11.0
Thus, you can use the latest SDK version that is convenient for you.
The problems happen when a new macOS version appears. They tend to contain "innovations"
that break FLTK until the source code is modified to account for those innovations.
Thus, the source code before the public beta macOS version appears may fail on a new macOS.
Hopefully, it's rapidly patched and becomes upward and downward compatible with macOS.
But it's impossible to support a future macOS before having seen it.