[PATCH] perf tools: Pick up libdw without explicit LIBDW_DIR

[Ramkumar Ramachandra <artagnon@gmail.com>]

The Makefile logic sets FEATURE_CHECKS_CFLAGS-libdw-dwarf-unwind and
FEATURE_CHECKS_LDFLAGS-libdw-dwarf-unwind only if LIBDW_DIR is
defined. This means that under a normal setup,

  $ make NO_LIBUNWIND=1

won't automatically pick up libdw. Fix this.

Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
---
 tools/perf/config/Makefile | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index c234182..0c043b0 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -65,10 +65,9 @@ ifndef NO_LIBELF
   ifdef LIBDW_DIR
     LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
     LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
-
-    FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
-    FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) -ldw
   endif
+  FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
+  FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) -ldw
 endif
 
 # include ARCH specific config
-- 
1.9.0.431.g014438b