set 0045 0046 new

[guihao-liang]

code review purpose for #3065;

basically, it checks whether the dependencies exist or not. Otherwise, CMake will complain about the target "" is not found.

[guihao-liang]

This will be merged once we sign off #3065

[TobyRoseman]

@guihao-liang - I'm really not understanding the purpose of this change from your description. Also it looks like a lot of the changes here are just formatting changes. If you're making a large number of formatting changes, it would be helpful to reviewers to do those as a separate commit.

[guihao-liang]

@guihao-liang - I'm really not understanding the purpose of this change from your description. Also it looks like a lot of the changes here are just formatting changes. If you're making a large number of formatting changes, it would be helpful to reviewers to do those as a separate commit.

Yeah, I marked those places that need to be reviewed. Well, the title explains, I set cmake policy 0045 0046 from OLD to NEW, which means it will error out when a target doesn't exist.

[guihao-liang]

Passed internal pipeline. Let's merge.

[hoytak]

Just rework the formatting mess-ups and looks fine.