subdir_depends() command should not be called.
The implementation of this command has been empty since December 2001 but was kept in CMake for compatibility for a long time.
CMake >= 3.0 prefer that this command never be called. The
OLD behavior for this policy is to allow the command to be called. The
NEW behavior for this policy is to issue a
FATAL_ERROR when the command is called.
This policy was introduced in CMake version 3.0. CMake version 3.19.0-rc3 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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Licensed under the BSD 3-clause License.