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| author |   Namhyung Kim <namhyung@kernel.org> | 2019-12-23 15:13:26 +0900 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2019-12-23 15:34:06 +0100 |
| commit | fa633a0f89192379828103957874682d389eae83 (patch) | |
| tree | 2a7f70307542ac7805d419c4f73f23b6771f56b7 /tools/testing/selftests/bpf/trace_helpers.c | |
| parent | bpf: Fix precision tracking for unbounded scalars (diff) | |
| download | linux-dev-fa633a0f89192379828103957874682d389eae83.tar.xz linux-dev-fa633a0f89192379828103957874682d389eae83.zip | |
libbpf: Fix build on read-only filesystems
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>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20191223061326.843366-1-namhyung@kernel.org
Diffstat (limited to 'tools/testing/selftests/bpf/trace_helpers.c')
0 files changed, 0 insertions, 0 deletions