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CMAKE_FIND_FRAMEWORK
This variable affects how find_* commands choose between macOS Frameworks and unix-style package components.
On Darwin or systems supporting macOS Frameworks, the CMAKE_FIND_FRAMEWORK variable can be set to empty or one of the following:
FIRST-
Try to find frameworks before standard libraries or headers. This is the default on Darwin.
LAST-
Try to find frameworks after standard libraries or headers.
ONLY-
Only try to find frameworks.
NEVER-
Never try to find frameworks.
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https://cmake.org/cmake/help/v3.15/variable/CMAKE_FIND_FRAMEWORK.html