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Top Forums UNIX for Advanced & Expert Users Kernel module compilation problem Post 302281717 by otheus on Thursday 29th of January 2009 10:21:28 AM
Old 01-29-2009
The thing is, every .c file normally is compiled separately into a separate object file. Unlike normal programs, there is no linker to combine the object files. If you want the kernel to load all these files, you have to make *each* of them a kernel module.

What you can instead do is something like this: split your code into two separate files, mod.c and lib.c, and then inside mod.c you have:
Code:
#include "lib.c"

You can put it at the top or at the end. Keep in mind, globals or static data defined in one .c file will be seen in the other.
 
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MODULE_DEPEND(9)					   BSD Kernel Developer's Manual					  MODULE_DEPEND(9)

NAME
MODULE_DEPEND -- set kernel module dependencies SYNOPSIS
#include <sys/param.h> #include <sys/module.h> MODULE_DEPEND(name, moddepend, int minversion, int prefversion, int maxversion); DESCRIPTION
The MODULE_DEPEND() macro sets a dependency on another kernel module with name moddepend, which has registered its version with MODULE_VERSION(). The MODULE_DEPEND() macro provides hints to the kernel loader(8) and to the kernel linker to ensure that the named dependency is loaded prior to the existing module. It does not change or dictate the order in which modules are initialized at runtime. Three versions must be specified for moddepend: minversion The minimum version on which the current module can depend. maxversion The maximum version on which the current module can depend. prefversion The preferred version on which the current module can depend. EXAMPLES
MODULE_DEPEND(foo, bar, 1, 3, 4); SEE ALSO
DECLARE_MODULE(9), module(9), MODULE_VERSION(9) AUTHORS
This manual page was written by Alexander Langer <alex@FreeBSD.org>. BSD
January 11, 2005 BSD

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