CMP0009ΒΆ
FILE GLOB_RECURSE calls should not follow symlinks by default.
In CMake 2.6.1 and below, file(GLOB_RECURSE)
calls would follow
through symlinks, sometimes coming up with unexpectedly large result sets
because of symlinks to top level directories that contain hundreds of
thousands of files.
This policy determines whether or not to follow symlinks encountered
during a file(GLOB_RECURSE)
call. The OLD
behavior for this
policy is to follow the symlinks. The NEW
behavior for this policy is not
to follow the symlinks by default, but only if FOLLOW_SYMLINKS
is given
as an additional argument to the FILE
command.
This policy was introduced in CMake version 2.6.2. CMake version
3.27.9 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.