building the linux kernel module

slcklnx · 03-04-2024, 12:34 PM

there is a

Code:

kernel_module.c

file

there is a directory

Code:

/usr/local/bin/MMD

with copied kernel headers

does someone have the knowledge to tell which gcc commands to run to build a kernel module without scripts and make utilities?

smallpond · 03-04-2024, 01:00 PM

It is unlikely that you will find this knowledge since no-one builds kernel modules this way. It may be possible, but typing 100-character command lines manually seems pointless.

If you want to do it, the simplest way is to run the standard Makefile command to build a module and then copy what it does:

Code:

make -C <path_to_kernel_src> M=$PWD

slcklnx · 03-04-2024, 01:26 PM

only with gcc without make. you can tell exactly where the scripts for building the module are located. perhaps I would have seen the necessary commands in them.

smallpond · 03-04-2024, 04:24 PM

The module build process is described here: https://elixir.bootlin.com/linux/lat...ld/modules.rst

sundialsvcs · 03-04-2024, 07:47 PM

The very best way to approach this is to simply view the "kernel source and header directories" as a source of information. Not that you will then attempt to use them to "build a kernel for yourself." Because the distributors of "your favorite distro" know far more about this process than you do.

slcklnx · 03-06-2024, 12:27 AM

where can I see the module build scripts? I didn't say that I know Linux. I've always said I'm new to this. please tell me specifically where is the script with the gcc command set for building the kernel module?

_blackhole_ · 03-06-2024, 07:04 AM

You seem to be providing the least information possible, while fishing for a quick solution to whatever it is you're trying to do...

You also appear to have a history of this.

Have a look here and work it out for yourself (example): https://tldp.org/LDP/lkmpg/2.4/html/lkmpg.html#AEN208

If you choose not to use a makefile, that's your decision to pursue something more advanced, therefore you are expected to do the reseatch.

smallpond · 03-06-2024, 07:38 AM

The file Makefile in the root directory of the kernel source is what builds the kernel and module. There is no script with a gcc command in it.

dugan · 03-06-2024, 05:59 PM

Obviously, you solve this by installing make. Or by copying /usr/bin/MMD to a computer that has it. Don't tell me you can't do either one, because that response would be silly. And don't say that that's not what you asked, because that would be even more silly.

Quote:

Originally Posted by slcklnx

where can I see the module build scripts? I didn't say that I know Linux. I've always said I'm new to this. please tell me specifically where is the script with the gcc command set for building the kernel module?

That's... actually what the Makefiles are.