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

From: Adam Jackson
Date: Fri Jan 22 2016 - 12:35:51 EST

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

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.

- ajax