link_directories()treats paths relative to the source dir.
In CMake 2.8.0 and lower the
link_directories() command passed relative paths unchanged to the linker. In CMake 2.8.1 and above the
link_directories() command prefers to interpret relative paths with respect to
CMAKE_CURRENT_SOURCE_DIR, which is consistent with
include_directories() and other commands. The
OLD behavior for this policy is to use relative paths verbatim in the linker command. The
NEW behavior for this policy is to convert relative paths to absolute paths by appending the relative path to
This policy was introduced in CMake version 2.8.1. 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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