lkml.org 
[lkml]   [2019]   [Dec]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH bpf] libbpf: Fix build on read-only filesystems
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!

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(-)
>

[...]

\
 
 \ /
  Last update: 2019-12-23 06:47    [W:0.043 / U:14.820 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site