How to compile kernel modules separately and manuelly?

X

xiaoj

I used MODULES_OVERRIDE to decide which modules be compiled with kernel compilation. But maybe sometimes I need some mudule compiled and installed by hand.

Is there some method to compile and install kernel modules separately and manuelly? not rebuild the kernel and modules already installed in /boot/kernel, but compile and install the only one specified module.
 
They all have a directory in /usr/src/sys/modules/. You can try doing a make from one of them.
 
FreeBSD supports two types of kernel modules:

- Permanent modules

- Loadable modules

Loadable modules are not statically linked into the kernel. Instead they are loaded at run-time.
See kldload(8) and kld(4)
If you want to write your own kernel module then module(9) might help.
 
Thanks anemos, the module what i mean is just the loadable modules, I have not enough c skill to be able to write my own module, what i need recently is some command to compile and install one loadable module separately and manuelly.

Thanks a lot.
 
Then, as SirDice pointed out, go to /usr/src/sys/modules/module_name, run
Code: 
$ make
$ kldload module_name.ko

You can see the loaded module with
Code: 
$ kldstat
 
Time passes but the problems are somehow similar...
"Where" to build modules which are not in /usr/src/sys/modules but are (also) modules obviously and how to build them? For ex. stuff under /usr/src/sys/dev/usb/wlan.
Even more specific: How to rebuild if_urtwn.ko only?
 
Wasp said:
Time passes but the problems are somehow similar...
"Where" to build modules which are not in `/usr/src/sys/modules` but are (also) modules obviously and how to build them? For ex. stuff under `/usr/src/sys/dev/usb/wlan`.
Click to expand...
They have corresponding directories in /usr/src/sys/modules/usb/.
 
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