Cutting extra shape

hi guys , is there any easy way to cut the extra window pieces fast without doing it one by one?

i tried doing it with solid tools subtract but it doesnt work

(1) The windows need to be components.
(2) AND then each one that will be cut needs to be made unique.
(3) the roof needs to be a component.

There may be a plugin that can automate the task of subtraction.

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