Re: [PATCH v5 0/2] kbuild: distributed build support for Clang ThinLTO

[Nicolas Schier <nsc@kernel.org>]

On Thu, Mar 12, 2026 at 01:25:02AM -0700, Nathan Chancellor wrote:
> Hi Nicolas,
> 
> On Tue, Oct 28, 2025 at 06:28:20PM +0000, xur@google.com wrote:
> > From: Rong Xu <xur@google.com>
> > 
> > ChangeLog:
> > 
> > V5: Handle single quote escaping in echo _c_flags to fix
> >     Piotr Gorski's reported error.
> > 
> > V4: This is based on the reimplementation provided by Masahiro Yamada
> > on May 26. The difference is that this version now saves the compiler
> > flags (_c_flags) from the Front-End (FE) compilation and re-uses them
> > for the subsequent Back-End (BE) compilation.
> >  
> > Rong Xu (2):
> >   kbuild: move vmlinux.a build rule to scripts/Makefile.vmlinux_a
> >   kbuild: distributed build support for Clang ThinLTO
> > 
> >  .gitignore                 |  2 +
> >  Makefile                   | 25 +++++-------
> >  arch/Kconfig               | 19 +++++++++
> >  scripts/Makefile.lib       |  7 ++++
> >  scripts/Makefile.thinlto   | 40 ++++++++++++++++++
> >  scripts/Makefile.vmlinux_a | 83 ++++++++++++++++++++++++++++++++++++++
> >  scripts/mod/modpost.c      | 15 +++++--
> >  7 files changed, 174 insertions(+), 17 deletions(-)
> >  create mode 100644 scripts/Makefile.thinlto
> >  create mode 100644 scripts/Makefile.vmlinux_a
> 
> I have been running this for a few months locally and I have not noticed
> any problems with it (at least for the two distribution configurations I
> regularly test). I think this looks good overall and seems fairly well
> contained thanks to Masahiro's work on the earlier revisions. Could this
> be picked up in kbuild-next-unstable so it can bake in -next for a
> little bit? It should still be applicable.
> 
> Reviewed-by: Nathan Chancellor <nathan@kernel.org>
> Tested-by: Nathan Chancellor <nathan@kernel.org>

Thanks!  Sure, I will pick the series up.

Kind regards,
Nicolas