| =========== | |
| Usage Modes | |
| =========== | |
| The libc can used in two different modes: | |
| #. The **overlay** mode: In this mode, the link order semantics are exploited | |
| to overlay implementations from LLVM's libc over the system libc. See | |
| :ref:`overlay_mode` for more information about this mode. | |
| #. The **fullbuild** mode: In this mode, LLVM's libc is used as the only libc | |
| for the binary. See :ref:`fullbuild_mode` for information about this mode. |