-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wednesday 26 March 2003 04:14 pm, Robert P. J. Day wrote: > in a fit of poor judgment, i tried to test the new 2.5.66 kernel > on my RH 8.0 box, and not only did it explode in glorious ways, > it made a mess of my nvidia setup. > > in recovering to an older, working kernel, i now find i can't > rebuild the NVIDIA kernel src rpms (loads of parse errors from > /usr/include files). > > i'm not sure why i'm getting compile-time errors when i've > never had them before, but i accidentally removed the kernel > source directory for the current good kernel, which means that > the sym link "/lib/modules/???/build" is now pointing at a > non-existent kernel source directory under /usr/src (yes, i > was eventually going to get around to that). > > so, before i spend a lot of time on this, what is the function > of that symlink, and could having it point at a non-existent > kernel source directory be causing the rebuild of my NVIDIA > kernel src rpm to blow up with dozens of parse errors from > include files?
(most?) Modules that require the headers for the running kernel point to /lib/modules/`uname -r`/build. I don't have Nvidia's drivers installed but I've seen others that do something like: LINUX=/lib/modules/`uname -r`/build CFLAGS=-DMODULE -D__KERNEL__ -DDBG=0 -Wall -Wstrict-prototypes -O6 - -I$(LINUX)/include > (not having the kernel source directory for the current running > kernel doesn't affect anything else -- system runs fine otherwise.) But building kernel modules will fail, as modules require the headers from the kernel tree, not the headers installed in /usr/include/linux/, (which are the headers glibc was compiled with, and are provided by the glibc-kernheaders package). Any kernel module that tries to include system headers should generate warning messages similar to: #warning Using kernel header in userland! #warning Using kernel headers in userspace. In the case above, if /lib/modules/`uname -r`/build is a broken link, the build will fail with the above warnings followed by many parse errors. So, the short version is reinstall the kernel-source package if you want to build kernel modules. - -- - -Michael pgp key: http://www.tuxfan.homeip.net:8080/gpgkey.txt Red Hat Linux 7.{2,3}|8.0 in 8M of RAM: http://www.rule-project.org/ - -- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE+gnk3n/07WoAb/SsRAp41AKCffc2aCIPVcoPXXxKP9fopH9kkowCbB24i Kx+3z/zFMDeHistk52jAUJY= =klSC -----END PGP SIGNATURE----- -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
