Messages in this thread | | | From | Andrii Nakryiko <> | Date | Sun, 22 Dec 2019 21:45:30 -0800 | Subject | Re: [PATCH bpf] libbpf: Fix build on read-only filesystems |
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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(-) >
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