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