Earlier you saw several environment variables that could be set to achieve different results. There are a number of environment variables you can set. Here’s an interesting subset, and check out the dyld manpage for the complete list. When a list of things is mentioned, it is a colon-separated list of those objects.
The first set of environment variables control where the dynamic linker finds libraries and frameworks when a process is first loaded.
A list of directories that contain frameworks. The dynamic linker searches these directories first.
A list of directories that contain frameworks. This is used as the default location for frameworks. ...