On Dec 16, 2012, at 8:46 AM, Michael E. Maher wrote:
‘--enable-kernel=version’
This option is currently only useful on GNU/Linux systems. The
version parameter should have the form X.Y.Z and describes the
smallest
version of the Linux kernel the generated library is expected to
support. The higher the version number is, the less compatibility code
is added, and the faster the code gets.
And reduces the size of the built glibc. You want to set the version
to the the oldest kernel version you may ever use, even when using a
livecd or distro to chroot to it.
The version set in the book covers most of the latest distros. Just be
careful setting it too the current kernel version unless you know for
sure your host or any livecd or distro you use for recovery or
administrative tasks via chroot will run the resulting glibc of the
LFS build.
Many people, when building LFS, will use the latest kernel version
headers and enable the kernel version to the current version as they
know what they are doing. If unsure, can't go wrong using what the
book uses for that parameter.
Sincerely,
William Harrington
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