perf build: Do not fail on missing Build file

Allow nesting into directories without Build file. Currently we force
include of the Build file, which fails the build when the Build file is
missing.

We already support empty *-in.o' objects if there's nothing in the
directory to be compiled, so we can just use it for missing Build file
cases.

Also adding this case under tests.

Reported-by: Rabin Vincent <rabin.vincent@axis.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Rabin Vincent <rabin.vincent@axis.com>
Link: http://lkml.kernel.org/r/1432914178-24086-1-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-05-29 17:42:58 +02:00 committed by Arnaldo Carvalho de Melo
parent 9a4388c711
commit d7a3d85e08
3 changed files with 4 additions and 1 deletions

View File

@ -37,7 +37,7 @@ subdir-obj-y :=
# Build definitions
build-file := $(dir)/Build
include $(build-file)
-include $(build-file)
quiet_cmd_flex = FLEX $@
quiet_cmd_bison = BISON $@

View File

@ -2,6 +2,7 @@ ex-y += ex.o
ex-y += a.o
ex-y += b.o
ex-y += empty/
ex-y += empty2/
libex-y += c.o
libex-y += d.o

View File

@ -0,0 +1,2 @@
This directory is left intentionally without Build file
to test proper nesting into Build-less directories.