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 <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Tested-by: Andrii Nakryiko <[email protected]>
Acked-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]

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

objtool, perf: Fix GCC 8 -Wrestrict error

2018-03-19 13:51:54 -03:00

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