On Wed, Sep 05, 2012 at 02:38:06PM -0700, Robert Cox wrote: > going thru the prerequisites again and decided to build a custom kernel for > my distro. > If you've been here before, you should have remembered that (like most linux lists), we don't like top-posting. Please don't do that here. > linux gets confusing because of the independent thinking both good and bad... > 1. distro call for debian is export cpu flags and so on... and the straight > build is j4.... or +1 or all the virtual cpu's depends on what tutorial you > read. etc...
If you are building while running a recent kernel, the number of jobs to run in parallel depends on your hardware. Yes, I can remember old recommendations to use high numbers of jobs. On my old single processor amd64, building a kernel with -j2 takes a lot longer than with -j1. On my current desktops (phonon, 4 real cores, and i3, two real cores but with hyperthreading linux treats them as 4 cores) using -j4 to build the kernel is a lot faster. OTOH, if I'm running other jobs (e.g. backups or image manipulation), -j2 will leave some CPU for those other jobs. > 2.one of the great things is the script since 2.6 kernel localmoduleconf or > whatever I forget... that builds the loaded modules... just thinking about > all the choices in menuconfig even after coping my distro's config files > over.... headache. localmodconfig or localyesconfig - as a starting point. Things like network controllers can happily be modules. If you are going to use this new kernel as the basis of something to run LFS, make sure that the drivers for your disk controller(s) and for your filesystem(s) are built in, not modules. I don't know for certain, but that might avoid you having to build an initrd for debian. Enabling the gzipped kernel config in /proc/config.gz is also handy if you build your own kernels. > 3. what is the abi in the boot??? modules ??? or linking to modules??? > I don't understand the question. Anything inside the kernel gets updated at the same time. The only problem is with non-free drivers for which the source isn't available. ĸen -- das eine Mal als Tragödie, das andere Mal als Farce -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
