Linux kernel source cross referenceHacking the Linux 2.6 kernel, Part 1: Getting readyHacking the Linux 2.6 kernel, Part 2: Making your first hackLinux Kernel in a NutshellYou can use DistCC or ccache (or both) to speed up compilation.
The main trick is to only make ONE target on the command line. i.e. don't try and do this make -j6 CC=distcc all modules_install or else the build will get screwed up and the whole thing will get remade each time.
Instead do this:
make -j6 CC=distcc all make modules_install INSTALL_MOD_PATH=~/tmp
To update the .config file with questions for new options do a make oldconfig
To output build files to another directory (so you don't mix source and object code) do make O=outputdir all
To make files in just one source code directory do make dir. To make the modules in a directory and link them do make M=dir. Remember to put a trailing slash after the directory name.
NB The above two may require you to have built your config etc first.
To enable extra error checks when compiling do make EXTRA_CFLAGS=-W.
A script to copy a new LinuxKernel to remote machines:
#! /bin/bash # syntax m machine_num directory version H=/home/ian SRC=$H/linuxsrc/$2 VER=$3 rm $H/tmp/lib/modules/$VER/build rm $H/tmp/lib/modules/$VER/source rsync $SRC/System.map root@jandi$1:/boot/System.map-$VER rsync $SRC/arch/i386/boot/bzImage root@jandi$1:/boot/vmlinuz-$VER rsync $SRC/vmlinux root@jandi$1:/boot/vmlinux-$VER rsync -av $H/tmp/lib/modules/$VER root@jandi$1:/lib/modules
It has also been suggested to use kgdb with qemu and/or kgdboe to help with debugging.
