User-provided Libraries
To simplify the development of kernel extensions, you can choose to split a kernel extension into separately loadable modules. These modules can be used when linking kernel extensions in the same way that they are used when developing user-level applications and shared objects.
In particular, a kernel module can be created as a shared object by linking with the -bM:SRE flag. The shared object can then be used as an input file when linking a kernel extension. In addition, shared objects can be put into an archive file, and the archive file can be listed on the command line when linking a kernel extension. In both cases, the shared object will be loaded as a dependent module when the kernel extension is loaded.