Correct steps to recompile kernel
Hi all folks, FreeBSD 5.2 === I am trying to learn recompiling kernel. I visited following link; http://www.freebsd.org/doc/en_US.IS...g-building.html But I am still not very clear of the correct steps to be taken. I suppose taking following steps # cd /usr/src/sys/i386/conf # cp GENERIC GENERIC.bak # cp GENERIC MYKERNEL # ee MYKERNEL (modifying the kernel) # config MYKERNEL # cd /usr/src/sys/i386/compile/MYKERNEL (Are the above directories correct???) # make depend # make # make install check /etc/rc.conf to have the line: linux_enable=YES reboot PC Any further steps needed to be taken thereafter? If I am wrong please correct me. TIA B.R. Stephen Liu ___ Do You Yahoo!? Get your free @yahoo.com.hk address at http://mail.english.yahoo.com.hk ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Correct steps to recompile kernel
Stephen Liu wrote: Hi all folks, FreeBSD 5.2 === I am trying to learn recompiling kernel. I visited following link; http://www.freebsd.org/doc/en_US.IS...g-building.html But I am still not very clear of the correct steps to be taken. I suppose taking following steps # cd /usr/src/sys/i386/conf # cp GENERIC GENERIC.bak # cp GENERIC MYKERNEL # ee MYKERNEL (modifying the kernel) This is good ... although making a backup of GENERIC is somewhat redundant. # config MYKERNEL # cd /usr/src/sys/i386/compile/MYKERNEL (Are the above directories correct???) # make depend # make # make install This is the _old_ way. I believe it still works, but I don't know if it's supported any longer, and besides, it's just more work than needed. The docs describe the newer method, which is cd /usr/src make buildkernel KERNCONF=MYKERNEL reboot to single-user mode make installkernel KERNCONF=MYKERNEL reboot check /etc/rc.conf to have the line: linux_enable=YES reboot PC This is a completely different thing than compiling a kernel. If you want the linuxulator installed, definately do this, but it's not really related to building a kernel. You don't mention if you've updated your source code or not. Just a warning, if you _did_ update your source code, you need to remake world as well as the kernel or you'll have trouble. If you didn't update your source, the steps outlined above should cover everything. -- Bill Moran Potential Technologies http://www.potentialtech.com ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Correct steps to recompile kernel
Hi Bill, Tks for your advice. - snip - # cd /usr/src/sys/i386/conf # cp GENERIC GENERIC.bak # cp GENERIC MYKERNEL # ee MYKERNEL (modifying the kernel) This is good ... although making a backup of GENERIC is somewhat redundant. Noted with thanks. But in case of trouble where can I get the old kernel back. # config MYKERNEL # cd /usr/src/sys/i386/compile/MYKERNEL (Are the above directories correct???) # make depend # make # make install This is the _old_ way. I believe it still works, but I don't know if it's supported any longer, and besides, it's just more work than needed. The docs describe the newer method, which is cd /usr/src make buildkernel KERNCONF=MYKERNEL reboot to single-user mode make installkernel KERNCONF=MYKERNEL reboot Noted with thanks. check /etc/rc.conf to have the line: linux_enable=YES reboot PC This is a completely different thing than compiling a kernel. If you want the linuxulator installed, definately do this, but it's not really related to building a kernel. Noted. You don't mention if you've updated your source code or not. Just a warning, if you _did_ update your source code, you need to remake world as well as the kernel or you'll have trouble. If you didn't update your source, the steps outlined above should cover everything. No, I am not going to upgrade the kernel, only to activate SCSI support. Sorry for not mentioning it on my first posting. Tks B.R. Stephen ___ Do You Yahoo!? Get your free @yahoo.com.hk address at http://mail.english.yahoo.com.hk ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Correct steps to recompile kernel
Stephen Liu wrote: Hi Bill, Tks for your advice. - snip - # cd /usr/src/sys/i386/conf # cp GENERIC GENERIC.bak # cp GENERIC MYKERNEL # ee MYKERNEL (modifying the kernel) This is good ... although making a backup of GENERIC is somewhat redundant. Noted with thanks. But in case of trouble where can I get the old kernel back. GENERIC _is_ the old kernel. That's why it's recommended never to edit GENERIC, but to always copy it to a new config file. Again, it won't hurt anything to back it up ... you can never have too many backups. snip You don't mention if you've updated your source code or not. Just a warning, if you _did_ update your source code, you need to remake world as well as the kernel or you'll have trouble. If you didn't update your source, the steps outlined above should cover everything. No, I am not going to upgrade the kernel, only to activate SCSI support. Sorry for not mentioning it on my first posting. NP. I just wanted to bring it up in case. It's a fairly common mistake to update ones sources, build a new kernel without rebuilding world, and then wonder where all the problems are coming from ;) -- Bill Moran Potential Technologies http://www.potentialtech.com ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Correct steps to recompile kernel
On Thursday 20 May 2004 18:39, Stephen Liu wrote: Hi Bill, Tks for your advice. - snip - # cd /usr/src/sys/i386/conf # cp GENERIC GENERIC.bak # cp GENERIC MYKERNEL # ee MYKERNEL (modifying the kernel) This is good ... although making a backup of GENERIC is somewhat redundant. Noted with thanks. But in case of trouble where can I get the old kernel back. When you install a new kernel the old one is backed up under /boot/kernel.old/ If you can't boot your new kernel, just press '6' in the boot loader menu to escape to the loader prompt, and then type unload load /boot/kernel.old/kernel boot regards ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
