Re: clang --target=bpf missing on f23 was: Re: [PATCH 1/2] perf test: Add libbpf relocation checker

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Em Fri, Jan 22, 2016 at 06:56:02PM +0100, Daniel Borkmann escreveu:
> On 01/22/2016 06:35 PM, Adam Jackson wrote:
> >On Fri, 2016-01-22 at 14:22 -0300, Arnaldo Carvalho de Melo wrote:
> >
> >>	the 'bpf' target for clang is being used together with perf to
> >>build scriptlets into object code that then gets uploaded to the kernel
> >>via sys_bpf(), was the decision not to include 'bpf' just an accident?
> >
> >I wouldn't call it a "decision", that would imply intent. The main
> >reason I explicitly list targets for llvm is to limit the CPU backends
> >to arches Fedora actually runs on (which itself is because I really
> >only care about llvmpipe, and am only touching llvm because it's in my
> >way). Had no idea there was a bpf backend, so never thought to enable
> >it.
> >
> >llvm-3.7.0-4.fc2{3,4} are building now with the bpf backend enabled,
> >I'll create an update for F23 when it's built.
> 
> Awesome, thanks!

Seconded, thanks for the fast response and for adding the bpf target!

Now that is a good, intentional decision 8-)

- Arnaldo