CMP0130

New in version 3.24.

while() diagnoses condition evaluation errors.

CMake 3.23 and below accidentally tolerated errors encountered while evaluating the condition passed to the while() command (but not the if() command). For example, the code

set(paren "(")
while(${paren})
endwhile()

creates an unbalanced parenthesis during condition evaluation.

CMake 3.24 and above prefer to diagnose such errors. This policy provides compatibility for projects that have not been updated to fix their condition errors.

The OLD behavior for this policy is to ignore errors in while() conditions. The NEW behavior for this policy is to diagnose errors in while() conditions.

This policy was introduced in CMake version 3.24. CMake version 3.26.6 warns when the policy is not set and uses OLD behavior. Use the cmake_policy() command to set it to OLD or NEW explicitly.

Note

The OLD behavior of a policy is deprecated by definition and may be removed in a future version of CMake.