list command no longer ignores empty elements.
This policy determines whether the list command will ignore empty elements in the list. CMake 2.4 and below list commands ignored all empty elements in the list. For example,
a;b;;c would have length 3 and not 4. The
OLD behavior for this policy is to ignore empty list elements. The
NEW behavior for this policy is to correctly count empty elements in a list.
This policy was introduced in CMake version 2.6.0. CMake version 3.15.2 warns when the policy is not set and uses
OLD behavior. Use the
cmake_policy() command to set it to
OLD behavior of a policy is
deprecated by definition and may be removed in a future version of CMake.
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