Re: selftests: hid: trouble building with clang due to missing header

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On Tue, Aug 22, 2023 at 11:06 PM Benjamin Tissoires
<benjamin.tissoires@xxxxxxxxxx> wrote:
>
> On Tue, Aug 22, 2023 at 10:57 PM Justin Stitt <justinstitt@xxxxxxxxxx> wrote:
> >
> [...]
> > > > > Here's the invocation I am running to build kselftest:
> > > > > `$ make LLVM=1 ARCH=x86_64 mrproper headers && make LLVM=1 ARCH=x86_64
> > > > > -j128 V=1 -C tools/testing/selftests`
> > >
> > > I think I fixed the same issue in the script I am running to launch
> > > those tests in a VM. This was in commit
> > > f9abdcc617dad5f14bbc2ebe96ee99f3e6de0c4e (in the v6.5-rc+ series).
> > >
> > > And in the commit log, I wrote:
> > > ```
> > > According to commit 01d6c48a828b ("Documentation: kselftest:
> > > "make headers" is a prerequisite"), running the kselftests requires
> > > to run "make headers" first.
> > > ```
> > >
> > > So my assumption is that you also need to run "make headers" with the
> > > proper flags before compiling the selftests themselves (I might be
> > > wrong but that's how I read the commit).
> >
> > In my original email I pasted the invocation I used which includes the
> > headers target. What are the "proper flags" in this case?
> >
>
> "make LLVM=1 ARCH=x86_64 headers" no?
>
> But now I'm starting to wonder if that was not the intent of your
> combined "make mrproper headers". I honestly never tried to combine
> the 2. It's worth a try to split them I would say.

Apologies, I just tested it, and it works (combining the 2).

Which kernel are you trying to test?
I tested your 2 commands on v6.5-rc7 and it just works.

FTR:
$> git checkout v6.5-rc7
$> make LLVM=1 ARCH=x86_64 mrproper headers
$> make LLVM=1 ARCH=x86_64 -j8 -C tools/testing/selftests TARGETS=hid

->   BINARY   hid_bpf

Cheers,
Benjamin





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