CMP0061

CTest does not by default tell make to ignore errors (-i).

The ctest_build() and build_command() commands no longer generate build commands for Makefile Generators with the -i option. Previously this was done to help build as much of tested projects as possible. However, this behavior is not consistent with other generators and also causes the return code of the make tool to be meaningless.

Of course users may still add this option manually by setting CTEST_BUILD_COMMAND or the MAKECOMMAND cache entry. See the CTest Build Step MakeCommand setting documentation for their effects.

The OLD behavior for this policy is to add -i to make calls in CTest. The NEW behavior for this policy is to not add -i.

This policy was introduced in CMake version 3.3. Unlike most policies, CMake version 3.17.5 does not warn when this policy is not set and simply uses OLD behavior.