Semicolon-separated list of directories to be ignored by the
find_path() commands. This is useful in cross-compiling environments where some system directories contain incompatible but possibly linkable libraries. For example, on cross-compiled cluster environments, this allows a user to ignore directories containing libraries meant for the front-end machine.
By default this is empty; it is intended to be set by the project. Note that
CMAKE_IGNORE_PATH takes a list of directory names, not a list of prefixes. To ignore paths under prefixes (
lib, etc.), specify them explicitly.
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