sys-kernel/README: Document use of slot operators in coreos-kernel

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Benjamin Gilbert 2017-01-25 15:16:15 -08:00
parent 413c889b59
commit 4bf33f4bcf

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@ -20,7 +20,11 @@ for using the same rules - for example:
- commonconfig - commonconfig
coreos-kernel uses the installed sources and coreos-modules to build the coreos-kernel uses the installed sources and coreos-modules to build the
kernel image and initramfs. kernel image and initramfs. Many of its build dependencies are copied into
the initramfs by dracut, and several of these are significant enough that we
want to rebuild coreos-kernel whenever they change. Such packages set their
sub-slot to their ${PVR}, and then coreos-kernel DEPENDs on them using a
slot operator (":=") to force a rebuild whenever their sub-slot changes.
Currently our dracut based initramfs (bootengine) gets built directly into Currently our dracut based initramfs (bootengine) gets built directly into
the kernel image. The reason for this screwy scheme never came to pass and the kernel image. The reason for this screwy scheme never came to pass and