How get absolute path of includes?

How get abs path of includes?
Example:

//SomeClass.h
include in code : '#include "Engine.h"'
Abs path "C:\Program Files\Epic Games\UE_4.15\Engine\Source\Runtime\Engine\Classes\Engine\Engine.h"
//Engine.h
include in code: '#include "CoreMinimal.h"'
Abs path "C:\Program Files\Epic Games\UE_4.15\Engine\Source\Runtime\Core\Public\CoreMinimal.h"

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