diff options
Diffstat (limited to 'chapter06/kernel-exp.xml')
| -rw-r--r-- | chapter06/kernel-exp.xml | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/chapter06/kernel-exp.xml b/chapter06/kernel-exp.xml new file mode 100644 index 000000000..c01f32364 --- /dev/null +++ b/chapter06/kernel-exp.xml @@ -0,0 +1,36 @@ +<sect2> +<title>Command explanations</title> + +<para><userinput>ln -s /static/bin/pwd /bin/pwd</userinput>: The kernel +source hard-wires the path to <filename>pwd</filename> to be +<filename>/bin/pwd</filename> so we create a temporary symlink to deal with +it.</para> + +<para><userinput>make mrproper:</userinput> This will ensure that the kernel +tree is absolutely clean. We do this because the kernel team recommend +that this is done prior to <emphasis>each</emphasis> kernel compilation, +and that we shouldn't rely on the source tree being automatically clean +after untarring.</para> + +<para><userinput>make include/linux/version.h</userinput> and +<userinput>make symlinks</userinput>: This creates the +<filename>include/linux/version.h</filename>, as well as the <filename +class="symlink">include/asm</filename> symlink.</para> + +<para><userinput>mkdir $LFS/usr/include/asm</userinput> +and <userinput>cp include/asm/* $LFS/usr/include/asm</userinput>: +This copies the platform-specific assembler kernel header files to +<filename>$LFS/usr/include/asm</filename></para> + +<para><userinput>cp -R include/linux $LFS/usr/include</userinput>: +This command copies the cross-platform kernel header files to +<filename>$LFS/usr/include</filename></para> + +<para><userinput>touch $LFS/usr/include/linux/autoconf.h</userinput>: Some +kernel header files include this <filename>autoconf.h</filename> file, but +outside the Linux source tree, that file has no meaning so we just create +an empty one so we don't get compile errors whenever it happens to be a +dependency of another kernel header file.</para> + +</sect2> + |