Re: [PATCH bpf] samples/bpf: kbuild: add CONFIG_SAMPLE_BPF Kconfig

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On Wed, Oct 02, 2019 at 09:41:15AM +0200, Björn Töpel wrote:
On Wed, 2 Oct 2019 at 03:49, Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:

[...]
> Yes, the BPF samples require clang/LLVM with BPF support to build. Any
> suggestion on a good way to address this (missing tools), better than
> the warning above? After the commit 394053f4a4b3 ("kbuild: make single
> targets work more correctly"), it's no longer possible to build
> samples/bpf without support in the samples/Makefile.


You can with

"make M=samples/bpf"


Oh, I didn't know that. Does M= support "output" builds (O=)?

I usually just build samples/bpf/ with:

 $ make V=1 O=/home/foo/build/bleh samples/bpf/


Björn

Shouldn't README be updated?

--
Regards,
Ivan Khoronzhuk



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