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# PR_SetLibraryPath
Registers a default library pathname with a runtime.
## Syntax
```{code}
#include <prlink.h>
PRStatus PR_SetLibraryPath(const char *path);
```
### Parameters
The function has this parameter:
`path`
: A pointer to a character array that contains the directory path that
the application should use as a default. The syntax of the pathname
is not defined, nor whether that pathname should be absolute or
relative.
### Returns
The function returns one of the following values:
- If successful, `PR_SUCCESS`.
- If unsuccessful, `PR_FAILURE`. This may indicate that the function
cannot allocate sufficient storage to make a copy of the path string
## Description
This function registers a default library pathname with the runtime.
This allows an environment to express policy decisions globally and
lazily, rather than hardcoding and distributing the decisions throughout
the code.