AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/tools/lib
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Namhyung Kim fa633a0f89 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
2019-12-23 15:34:06 +01:00
..
api tools lib api: Renaming pr_warning to pr_warn 2019-10-18 15:02:57 +02:00
bpf libbpf: Fix build on read-only filesystems 2019-12-23 15:34:06 +01:00
lockdep locking/lockdep: Remove unused @nested argument from lock_release() 2019-10-09 12:46:10 +02:00
subcmd libsubcmd: Use -O0 with DEBUG=1 2019-11-06 15:49:39 -03:00
symbol tools perf: Move from sane_ctype.h obtained from git to the Linux's original 2019-06-25 21:02:47 -03:00
traceevent libtraceevent: Allow custom libdir path 2019-12-16 13:40:26 -03:00
argv_split.c tools lib: Move argv_{split,free} from tools/perf/util/ 2019-07-01 22:50:40 -03:00
bitmap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
ctype.c tools perf: Move from sane_ctype.h obtained from git to the Linux's original 2019-06-25 21:02:47 -03:00
find_bit.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hweight.c
rbtree.c rbtree: avoid generating code twice for the cached versions (tools copy) 2019-09-25 17:51:39 -07:00
str_error_r.c
string.c tools lib: Adopt strreplace() from the kernel 2019-07-01 22:50:40 -03:00
vsprintf.c perf script: Pad DSO name for --call-trace 2019-05-28 18:37:44 -03:00
zalloc.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00