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Diffstat (limited to 'chapter05/kernel-exp-headers.xml')
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diff --git a/chapter05/kernel-exp-headers.xml b/chapter05/kernel-exp-headers.xml deleted file mode 100644 index de1256f3c..000000000 --- a/chapter05/kernel-exp-headers.xml +++ /dev/null @@ -1,35 +0,0 @@ -<sect2> -<title>Why we copy the kernel headers and don't symlink them</title> - -<para>In the past, it was common practice for people to symlink the -/usr/include/linux and asm directories to /usr/src/linux/include/linux -and asm respectively. This is a <emphasis>bad</emphasis> idea as -this extract from a post by Linus Torvalds to the Linux Kernel -Mailing List points out:</para> - -<screen>I would suggest that people who compile new kernels should: - - - not have a single symbolic link in sight (except the one that the - kernel build itself sets up, namely the "linux/include/asm" symlink - that is only used for the internal kernel compile itself) - -And yes, this is what I do. My /usr/src/linux still has the old 2.2.13 -header files, even though I haven't run a 2.2.13 kernel in a _loong_ -time. But those headers were what glibc was compiled against, so those -headers are what matches the library object files. - -And this is actually what has been the suggested environment for at -least the last five years. I don't know why the symlink business keeps -on living on, like a bad zombie. Pretty much every distribution still -has that broken symlink, and people still remember that the linux -sources should go into "/usr/src/linux" even though that hasn't been -true in a _loong_ time.</screen> - -<para>The relevant part here is where he states that the headers should -be the ones which <emphasis>glibc was compiled against</emphasis>. These are -the headers which should remain accessible and so by copying them, we ensure -that we follow these guidelines. Also note that as long as you don't have -those symlinks, it is perfectly fine to have the kernel sources -in <filename>/usr/src/linux</filename>.</para> - -</sect2> |