[PATCH 1/2] tools/perf/build: Fix detection of non-core features

[David Ahern <dsahern@gmail.com>]

feature_check needs to be invoked through call, and LDFLAGS may not be set
so quotes are needed.

Thanks to Jiri for spotting the quotes around LDFLAGS; that one was driving
me nuts with the upcoming timerfd feature detection.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
---
 tools/perf/config/Makefile | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 543aa953bab1..c82772207e6e 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -96,7 +96,7 @@ endif
 
 feature_check = $(eval $(feature_check_code))
 define feature_check_code
-  feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) LDFLAGS=$(LDFLAGS) -C config/feature-checks test-$1 >/dev/null 2>/dev/null && echo 1 || echo 0)
+  feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) LDFLAGS="$(LDFLAGS)" -C config/feature-checks test-$1 >/dev/null 2>/dev/null && echo 1 || echo 0)
 endef
 
 feature_set = $(eval $(feature_set_code))
@@ -233,7 +233,7 @@ CFLAGS += -I$(LIB_INCLUDE)
 CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
 
 ifndef NO_BIONIC
-  $(feature_check,bionic)
+  $(call feature_check,bionic)
   ifeq ($(feature-bionic), 1)
     BIONIC := 1
     EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
@@ -470,15 +470,15 @@ else
     CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
   else
     ifneq ($(feature-libbfd), 1)
-      $(feature_check,liberty)
+      $(call feature_check,liberty)
       ifeq ($(feature-liberty), 1)
         EXTLIBS += -lbfd -liberty
       else
-        $(feature_check,liberty-z)
+        $(call feature_check,liberty-z)
         ifeq ($(feature-liberty-z), 1)
           EXTLIBS += -lbfd -liberty -lz
         else
-          $(feature_check,cplus-demangle)
+          $(call feature_check,cplus-demangle)
           ifeq ($(feature-cplus-demangle), 1)
             EXTLIBS += -liberty
             CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
-- 
1.7.12.4 (Apple Git-37)