Bug 12753

Kernel source package shipped by RH always produces all the
components (smp kernels, boot kernels, pcmcia package, ibcs
package and so on) on build stage.  Building of one component
is a long operation.  But most users who builds kernel himself
needs only particular configuration (e.g. only up-kernel for
i686 without pcmcia and ibcs -- most common config I guess).
Here is a patch for .spec file (against 2.2.16-1) to allow
such separation.  It introduces some variables (%defined at
top) named as mk_XXX that are default to 1 (%define mk_smp 1).
When changing those variables to 0, corresponding components
are skipped from build process.

One more thing I want here is to allow also easy building
of kernel-headers and kernel-source "for i686 arch", i.e.
so that only one target and one build will require to produce
kernel-xxx-i686.rpm and kernel-source-xxx-i386.rpm.
But this is not so easy with current rpm...

And also, I tried to make easily configurable custom config
and have a patch for this (to .spec also), but this is a bit
ugly for moment.  The idea is to allow definition of some
variable (e.g. --define 'kerncustom someval') and in this case
kernel-xxx-somevel.xxx.rpm will built using kernel-xxx-somevel.config
files, not the original redhat kernel-xxx.config configs.

Please apply (or review and apply) this patch -- it not breaks
anything, it is clean and it is simple.
This all will greatly simplify life for all people who needs
custom kernel builds.

Thank you.