Re: [PATCH] kbuild: Show Kconfig fragments in "help"

Kees Cook
2023-08-25T18:21:35Z

On Thu, Aug 24, 2023 at 05:04:02PM -0700, Randy Dunlap wrote:
> Hi Kees,
>
> On 8/24/23 15:36, Kees Cook wrote:
> > Doing a "make help" would show only hard-coded Kconfig targets and
> > depended on the archhelp target to include ".config" targets. There was
> > nothing showing global kernel/configs/ targets. Solve this by walking
> > the wildcard list and include them in the output, using the first comment
> > line as the help text.
> >
> > Update all Kconfig fragments to include help text and adjust archhelp
> > targets to avoid redundancy.
> >
> > Adds the following section to "help" target output:
> >
> > Configuration fragment targets (for enabling various Kconfig items):
> > debug.config - Debugging for CI systems and finding regressions
> > kvm_guest.config - Bootable as a KVM guest
> > nopm.config - Disable Power Management
> > rust.config - Enable Rust
> > tiny-base.config - Minimal options for tiny systems
> > tiny.config - Smallest possible kernel image
> > x86_debug.config - Debugging options for tip tree testing
> > xen.config - Bootable as a Xen guest
> > tiny.config - x86-specific options for a small kernel image
> > xen.config - x86-specific options for a Xen virtualization guest
>
> ISTM that you are missing the "why" part of this change in the commit
> description.

I want to see what fragments are available without needing to know the
source tree layout for their locations. :)

> "make tinyconfig" is the real target here. The other (tiny.) files are just
> implementation details.
> We can't put all implementation details into help messages and it's not
> difficult to find that the (tiny.) config files are merged to make the
> final .config file.

Yeah, this seems true for much of the ppc stuff to, as pointed out by
mpe. I'll go answer there...

--
Kees Cook