linux-kernel - [PATCH 3/8] perf tools: Make sure fixdep is built before libbpf

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Date:	Thu, 29 Oct 2015 20:05:32 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...hat.com>,
	Wang Nan <wangnan0@...wei.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 3/8] perf tools: Make sure fixdep is built before libbpf

From: Jiri Olsa <jolsa@...hat.com>

While doing 'make -C tools/perf build-test':

   LD       fixdep-in.o
   LINK     fixdep
 /bin/sh: /home/acme/git/linux/tools/build/fixdep: Permission denied
 make[6]: *** [bpf.o] Error 1
 make[5]: *** [libbpf-in.o] Error 2
 make[4]: *** [/home/acme/git/linux/tools/lib/bpf/libbpf.a] Error 2
 make[4]: *** Waiting for unfinished jobs....

The fixdep tool needs to be built as the first binary.  Libraries are
built in paralel, so each of them needs to depend on fixdep target.

Reported-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Jiri Olsa <jolsa@...hat.com>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/20151028204450.GA25553@krava.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/Makefile.perf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 1e2e2d1d26b7..0d19d5447d6c 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -430,7 +430,7 @@ $(LIBAPI)-clean:
 	$(call QUIET_CLEAN, libapi)
 	$(Q)$(MAKE) -C $(LIB_DIR) O=$(OUTPUT) clean >/dev/null
 
-$(LIBBPF): FORCE
+$(LIBBPF): fixdep FORCE
 	$(Q)$(MAKE) -C $(BPF_DIR) O=$(OUTPUT) $(OUTPUT)libbpf.a
 
 $(LIBBPF)-clean:
-- 
2.1.0

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