Messages in this thread |  | | Date | Fri, 10 Nov 2000 13:25:58 -0500 (EST) | From | "Georg Nikodym" <> | Subject | Re: compiling 2.4.0-test10 kernel |
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>>>>> "KO" == Keith Owens <kaos@ocs.com.au> writes:
KO> On Fri, 10 Nov 2000 11:23:29 -0500 (EST), "Georg Nikodym" KO> <georgn@somanetworks.com> wrote: C> i've manged to successfully compile 2.4.0-test10 kernel. however, C> upon startup there are some failed/error messages: C> 1. finding module dependencies: depmod *** Unresolved symbols in C> /lib/modules/2.4.0-test10/kernel/arch/i386/kernel/apm.o >> >> There are two things you can do about this: >> >> 1. Disable module versioning. >> 2. Copy the System.map file that's made during the kernel build to >> /boot/System.map-2.4.0-test10.
KO> System.map has nothing, repeat nothing to do with depmod at KO> startup. Yes, you can run depmod reading from a System.map but KO> that only makes sense before you boot the new kernel. Once you KO> have booted your new kernel, depmod -a reads from kernel memory, KO> not System.map.
OK. Makes sense. My first kicks at building and running a kernel had these problems (with module loading) until I added the copying of System.map to my installation procedure. I was led to this by messages in /var/log/messages... Thanks for the additional pointers.
KO> Q. Why do I get unresolved symbols like foo__ver_foo in modules?
KO> A. If /proc/ksyms or the output from depmod -ae contains symbols KO> like KO> "foo__ver_foo" then you have been bitten by the broken Makefile KO> code for symbol versioning. The only safe way to recover is save KO> your config, delete everything, restore the config and recompile.
KO> mv .config .. make mrproper mv ../.config . make oldconfig make KO> dep clean bzImage modules install, boot
OK, but I guess my question wasn't very clear. I have a kernel tree, I add a printk to maestro.c and make modules. I cannot load the module until I rebuild and reinstall everything. Is there a way to avoid this headache, or, stated differently: What's the prescribed way to be able to load, unload, build, test modules? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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