From: Andrii Nakryiko <andrii.nakryiko@gmail.com>
To: Namhyung Kim <namhyung@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>, Andrii Nakryiko <andriin@fb.com>,
bpf <bpf@vger.kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Jiri Olsa <jolsa@redhat.com>, LKML <linux-kernel@vger.kernel.org>,
Shuah Khan <shuah@kernel.org>,
"open list:KERNEL SELFTEST FRAMEWORK"
<linux-kselftest@vger.kernel.org>,
Networking <netdev@vger.kernel.org>,
linux-perf-users@vger.kernel.org
Subject: Re: [PATCH bpf] libbpf: Fix build on read-only filesystems
Date: Sun, 22 Dec 2019 21:54:47 -0800 [thread overview]
Message-ID: <CAEf4BzbyBgDN5svEcfpyjoViixhn2iGBs1j+jyvNhfjPp_1E=w@mail.gmail.com> (raw)
In-Reply-To: <CAEf4BzaGfsF352kWu1zZe+yXSRm4c9LQ0U57VnRq2EdtjeQutw@mail.gmail.com>
On Sun, Dec 22, 2019 at 9:45 PM Andrii Nakryiko
<andrii.nakryiko@gmail.com> wrote:
>
> On Sun, Dec 22, 2019 at 7:05 PM Namhyung Kim <namhyung@kernel.org> wrote:
> >
> > I got the following error when I tried to build perf on a read-only
> > filesystem with O=dir option.
> >
> > $ cd /some/where/ro/linux/tools/perf
> > $ make O=$HOME/build/perf
> > ...
> > CC /home/namhyung/build/perf/lib.o
> > /bin/sh: bpf_helper_defs.h: Read-only file system
> > make[3]: *** [Makefile:184: bpf_helper_defs.h] Error 1
> > make[2]: *** [Makefile.perf:778: /home/namhyung/build/perf/libbpf.a] Error 2
> > make[2]: *** Waiting for unfinished jobs....
> > LD /home/namhyung/build/perf/libperf-in.o
> > AR /home/namhyung/build/perf/libperf.a
> > PERF_VERSION = 5.4.0
> > make[1]: *** [Makefile.perf:225: sub-make] Error 2
> > make: *** [Makefile:70: all] Error 2
> >
> > It was becaused bpf_helper_defs.h was generated in current directory.
> > Move it to OUTPUT directory.
> >
> > Signed-off-by: Namhyung Kim <namhyung@kernel.org>
> > ---
>
> Looks good, thanks!
just one minor thing: bpf_helper_defs.h has to be added to .gitignore
under selftests/bpf now
>
> Tested-by: Andrii Nakryiko <andriin@fb.com>
> Acked-by: Andrii Nakryiko <andriin@fb.com>
>
> > tools/lib/bpf/Makefile | 15 ++++++++-------
> > tools/testing/selftests/bpf/Makefile | 6 +++---
> > 2 files changed, 11 insertions(+), 10 deletions(-)
> >
>
> [...]
next prev parent reply other threads:[~2019-12-23 5:55 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-20 3:25 [PATCH] libbpf: Fix build on read-only filesystems Namhyung Kim
2019-12-20 20:29 ` Andrii Nakryiko
2019-12-20 20:47 ` Arnaldo Carvalho de Melo
2019-12-20 21:45 ` Andrii Nakryiko
2019-12-20 21:53 ` Arnaldo Carvalho de Melo
2019-12-20 22:00 ` Andrii Nakryiko
2019-12-20 22:05 ` Arnaldo Carvalho de Melo
2019-12-21 8:25 ` Namhyung Kim
2019-12-21 16:22 ` Alexei Starovoitov
2019-12-23 3:05 ` [PATCH bpf] " Namhyung Kim
2019-12-23 5:45 ` Andrii Nakryiko
2019-12-23 5:45 ` Andrii Nakryiko
2019-12-23 5:54 ` Andrii Nakryiko [this message]
2019-12-23 5:54 ` Andrii Nakryiko
2019-12-23 6:09 ` Namhyung Kim
2019-12-23 6:09 ` Namhyung Kim
2019-12-23 6:13 ` [PATCH bpf v3] " Namhyung Kim
2019-12-23 6:29 ` Andrii Nakryiko
2019-12-23 6:29 ` Andrii Nakryiko
2019-12-23 14:39 ` Daniel Borkmann
2019-12-23 14:39 ` Daniel Borkmann
2019-12-20 22:01 ` [PATCH] " Andrii Nakryiko
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