try_compile: Propagate CMP0126 to the generated test project

Set policy CMP0126 to the value used in the calling project. It may affect toolchain file behavior.

Issue: #22038 (closed)
Backport: release

changed milestone to %3.21.1

added workflow:in-review label

requested review from @marc.chevrier

assigned to @brad.king

changed the description

Do: stage

added workflow:nightly-testing label and removed workflow:in-review label

approved this merge request

added 1 commit

• 144be54d - try_compile: Propagate CMP0126 to the generated test project

Compare with previous version

Do: stage

Warnings:

• Eligible for the 3.21.x branch.

The warnings do not need to be fixed, but it is recommended to do so.

Do: merge

merged

mentioned in commit 992467c3

mentioned in commit 797aa4c4

removed workflow:nightly-testing label