[cmake] Add ninja support for Windows

[bellenot]

[dpiparo]

PoW item number 6 of the "Builds and Binaries" category

[github-actions[bot]]

Test Results

    13 files      13 suites   2d 23h 39m 11s :stopwatch:  2 651 tests  2 651 :white_check_mark: 0 :zzz: 0 :x: 32 645 runs  32 645 :white_check_mark: 0 :zzz: 0 :x:

Results for commit 5815afb1.

:recycle: This comment has been updated with latest results.

[bellenot]

One missing comment.

Nope, the code (the condition) onto which you commented has been removed (I fixed rootcling which was failing on eve7)

[pcanal]

Nope, the code (the condition) onto which you commented has been removed (I fixed rootcling which was failing on eve7)

Sorry, github misled me :). (and I equally missed the fix :) )

[bellenot]

Sorry, github misled me :). (and I equally missed the fix :) )

No problem! 🙂

[bellenot]

Superseded by https://github.com/root-project/root/pull/16690