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how_to_compile_the_linux_kernel

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how_to_compile_the_linux_kernel [2010/12/03 23:33] (current)
tkbletsc created
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 +====== Compiling the Linux Kernel ======
  
 +Get a kernel:
 +  $ wget http://​kernel.org/​pub/​linux/​kernel/​v2.6/​linux-2.6.30.tar.bz2
 +
 +Extract:
 +  $ tar xjf linux-2.6.30.tar.bz2
 +  $ cd linux-2.6.30
 +
 +Make a ''​.config''​ file.  99% of the time the default will be fine, so we'll just run the plain menu config and exit to save the defaults. (You might be tempted to do "''​make defconfig''",​ which claims to do the same thing, but it doesn'​t.)
 +  $ make menuconfig
 +  <menu appears, choose Exit>
 +  <Do you want to save the config? ​ Yes>
 +
 +If you're going to be modifying the kernel, you should append something to the kernel version to differentiate it from "​pure"​ kernels. ​ To do this, in the ''​menuconfig'',​ select "​General setup",​ then "Local version - append to kernel release",​ then type something to append, such as "​-tyler1"​. ​ That way, your kernel image and drivers will will be installed with the version string ''​2.6.30-//​tyler1//''​.
 +
 +Compile the kernel and modules. ​ If your system has more than one core, use the -j option to run multiple jobs in parallel -- use twice the number of cores. ​ So for our 8-core machine:
 +  $ make -j 16
 +  <A ton of output>
 +
 +Copy the kernel modules to their rightful place (''/​lib/​modules/<​kernel_version>''​):​
 +  $ sudo make modules_install
 +
 +You can install the kernel and related stuff to /boot and update the grub menu automatically on most distributions:​
 +  $ sudo make install
 +
 +You should now be able to reboot and choose the new kernel.
how_to_compile_the_linux_kernel.txt ยท Last modified: 2010/12/03 23:33 by tkbletsc