Environment Variables

The following environment variables are used by the runtime linker:

• LD_LIBRARY_PATH specifies a colon-separated list of directories that are to be searched ahead of the default directories defined previously. The colon-separated list is used to enhance the search path that the runtime linker uses to locate dynamic and shared libraries.

• LD_PRELOAD provides a dynamic object name that is linked after the program is loaded but before any other dynamic objects that the program references.

• LD_DEBUG is a column-separated list of tokens for debugging the runtime linking of an application. Each token is associated with a set of traces that are displayed during runtime linking. The supported tokens are: file-ops, reloc, symbol-resolution, malloc, segment-alloc, dependency, misc, linking, dynamic-map-op, group, and error. Wildcard substitutions can also be used, for example, s* matches both symbol-resolution and segment-alloc. Using just the wildcard (*) matches all traces.