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| author | Alex Gronenwoud <alex@linuxfromscratch.org> | 2004-02-05 22:17:48 +0000 |
|---|---|---|
| committer | Alex Gronenwoud <alex@linuxfromscratch.org> | 2004-02-05 22:17:48 +0000 |
| commit | 2081905c43960871fd6db2bb032a59aec80a4417 (patch) | |
| tree | 7bbf46c156d97fafc6fbaa98c4274cb19e0d2d87 /chapter06/kernel-exp-headers.xml | |
| parent | 2309b72d4497b5c39a2c3ea749bf7323bee647ff (diff) | |
Simplifying the second copying of the kernel headers.
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3229 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
Diffstat (limited to 'chapter06/kernel-exp-headers.xml')
| -rw-r--r-- | chapter06/kernel-exp-headers.xml | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/chapter06/kernel-exp-headers.xml b/chapter06/kernel-exp-headers.xml deleted file mode 100644 index 9829fe2c9..000000000 --- a/chapter06/kernel-exp-headers.xml +++ /dev/null @@ -1,42 +0,0 @@ -<sect2><title> </title><para> </para></sect2> - -<sect2> -<title>Why we copy the kernel headers and don't symlink them</title> - -<para>In the past it was common practice to symlink the -<filename class="directory">/usr/include/{linux,asm}</filename> directories -to <filename class="directory">/usr/src/linux/include/{linux,asm}</filename>. -This was a <emphasis>bad</emphasis> practice, as the following 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 essential part is where Linus states that the header files should be -<emphasis>the ones which Glibc was compiled against</emphasis>. These are -the headers that should be used when you later compile other packages, as they -are the ones that match the object-code library files. By copying the headers, -we ensure that they remain available if later you upgrade your kernel.</para> - -<para>Note, by the way, that it is perfectly all right to have the kernel sources -in <filename class="directory">/usr/src/linux</filename>, as long as you don't -have the <filename class="directory">/usr/include/{linux,asm}</filename> -symlinks.</para> - -</sect2> - |