From 3b7646e45d110f53d4c0fa0a63158c3d2a763e60 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@kernel.org>
Date: Mon, 30 Sep 2013 15:53:31 +0200
Subject: [PATCH] tools/perf/build: Split out feature check: 'libbfd'

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-cdxdfv7Corpfvjg9Skezhvjn@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 tools/perf/config/Makefile                     | 4 ++--
 tools/perf/config/feature-checks/Makefile      | 4 ++++
 tools/perf/config/feature-checks/test-libbfd.c | 7 +++++++
 3 files changed, 13 insertions(+), 2 deletions(-)
 create mode 100644 tools/perf/config/feature-checks/test-libbfd.c

diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 63ba069..7e13969 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -121,6 +121,7 @@ FEATURE_TESTS =				\
 	libperl				\
 	libpython			\
 	libpython-version		\
+	libbfd				\
 	libnuma
 
 $(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
@@ -404,8 +405,7 @@ else
     CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
   else
     FLAGS_BFD=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) -DPACKAGE='perf' -lbfd
-    has_bfd := $(call try-cc,$(SOURCE_BFD),$(FLAGS_BFD),libbfd)
-    ifeq ($(has_bfd),y)
+    ifeq ($(feature-libbfd), 1)
       EXTLIBS += -lbfd
     else
       FLAGS_BFD_IBERTY=$(FLAGS_BFD) -liberty
diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index d15074d..af65aaa 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -19,6 +19,7 @@ FILES=					\
 	test-libperl			\
 	test-libpython			\
 	test-libpython-version		\
+	test-libbfd			\
 	test-libnuma
 
 CC := $(CC) -MD
@@ -112,6 +113,9 @@ test-libpython:
 test-libpython-version:
 	$(BUILD) $(FLAGS_PYTHON_EMBED)
 
+test-libbfd:
+	$(BUILD) -DPACKAGE='perf' -DPACKAGE=perf -lbfd -ldl
+
 -include *.d */*.d
 
 ###############################
diff --git a/tools/perf/config/feature-checks/test-libbfd.c b/tools/perf/config/feature-checks/test-libbfd.c
new file mode 100644
index 0000000..d03339c
--- /dev/null
+++ b/tools/perf/config/feature-checks/test-libbfd.c
@@ -0,0 +1,7 @@
+#include <bfd.h>
+
+int main(void)
+{
+	bfd_demangle(0, 0, 0);
+	return 0;
+}
-- 
2.7.4