linux-kernel - [PATCH 2/2] perf build: Use FEATURE-INCLUDE in bpf subproject

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Date:	Fri, 27 Nov 2015 10:06:51 +0100
From:	Jiri Olsa <jolsa@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Wang Nan <wangnan0@...wei.com>,
	lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH 2/2] perf build: Use FEATURE-INCLUDE in bpf subproject

Using FEATURE-INCLUDE in bpf subproject in case bpf is built
via perf. Keep the current features detection for other cases.

Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/n/tip-utuczk899ckz6qtggqvhm7yu@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/lib/bpf/Makefile   | 4 ++++
 tools/perf/Makefile.perf | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index 6916cbe962a5..6b9af77418b3 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -80,7 +80,11 @@ endif
 endif
 
 ifeq ($(check_feat),1)
+ifeq ($(FEATURES_INCLUDE),)
 include $(srctree)/tools/build/Makefile.feature
+else
+include $(FEATURES_INCLUDE)
+endif
 endif
 
 export prefix libdir src obj
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index b74f924185b7..7338a7e62fcd 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -431,7 +431,7 @@ $(LIBAPI)-clean:
 	$(Q)$(MAKE) -C $(LIB_DIR) O=$(OUTPUT) clean >/dev/null
 
 $(LIBBPF): fixdep FORCE
-	$(Q)$(MAKE) -C $(BPF_DIR) O=$(OUTPUT) $(OUTPUT)libbpf.a
+	$(Q)$(MAKE) -C $(BPF_DIR) O=$(OUTPUT) $(OUTPUT)libbpf.a FEATURES_INCLUDE=$(realpath $(OUTPUT)FEATURE-INCLUDE)
 
 $(LIBBPF)-clean:
 	$(call QUIET_CLEAN, libbpf)
-- 
2.4.3

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