Re: [OS-BUILD PATCHv2] Allow building of kernel-tools standalone

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On Wed, Oct 28, 2020 at 09:46:37AM -0400, Brian Masney wrote:
> On Wed, Oct 28, 2020 at 12:44:14PM -0000, GitLab Bridge on behalf of dzickusrh wrote:
> > From: Don Zickus <dzickus@xxxxxxxxxx>
> > 
> > For CKI and its cross-compile environment, it can not cross
> > compile userspace tools.  Instead we will native compiles them.
> > 
> > To allow this split, the kernel.spec needs to support only
> > building userspace stuff and not the kernel itself.
> > 
> > However the userspace tools need some vars defined. This
> > patch creates a new function and sets up those vars.
> > 
> > Also very useful for debugging userspace tools and skipping
> > the hour long kernel build times (like LTO).
> > 
> > To use this effectively, one would use
> > --without_up
> > --without_debug
> > --without_zfcpdump
> 
> These should be --without= instead of --without_.
> 
> I remember now why I never submitted this patch to ARK. I couldn't get
> the userspace RPMs for ELN to build and it's likely something wrong with
> the way that I'm building the kernel. Here's how I am building an ELN
> kernel:
> 
> 	DIST='.eln' make dist-srpm IS_FEDORA=0
> 	rpmbuild --define 'dist .eln' --rebuild --with=bpftool \
> 		--with=tools --with=perf --with=selftests --without=up \
> 		--without=kabidw_base --without=debug \
> 		--without=ipaclones --without=debuginfo \
> 		--without=cross_headers --without=pae \
> 		redhat/rpm/SRPMS/*.src.rpm
> 
> That won't actually build any RPMs. We are using similar flags for
> the RHEL 8 kernel.
> 
> If I try to build it with just the three --without flags that you have
> above like so, then it gives a different error:
> 
> 	$ DIST='.eln' make dist-srpm IS_FEDORA=0
> 	$ rpmbuild --define 'dist .eln' --rebuild  --without=up \
> 		--without=debug --without=zfcpdump \
> 		redhat/rpm/SRPMS/*.src.rpm
> 	RPM build errors:
> 	Empty %files file /home/masneyb/rpmbuild/BUILD/kernel-5.10.0-0.rc1.57.test/debugfiles.list

Hmm, I disabled those 3 inside the spec file and was using that approach to
debug lto issues.  Built eln in under 5 minutes repeatedly.

I will have to try your command(s).

Cheers,
Don

> 
> Brian
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