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[PATCH 2/3] perf build: Fix Intel PT instruction decoder dependency problem

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  [PATCH 2/3] perf build: Fix Intel PT instruction decoder dependency problem Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-09-01 18:20 +0200

#1216946 — [PATCH 2/3] perf build: Fix Intel PT instruction decoder dependency problem

From: Wang Nan <wangnan0@huawei.com>

I hit following building error randomly:

    ...
  /bin/sh: /path/to/kernel/buildperf/util/intel-pt-decoder/inat-tables.c: No such file or directory
    ...
    LINK     /path/to/kernel/buildperf/plugin_mac80211.so
    LINK     /path/to/kernel/buildperf/plugin_kmem.so
    LINK     /path/to/kernel/buildperf/plugin_xen.so
    LINK     /path/to/kernel/buildperf/plugin_hrtimer.so
  In file included from util/intel-pt-decoder/intel-pt-insn-decoder.c:25:0:
  util/intel-pt-decoder/inat.c:24:25: fatal error: inat-tables.c: No such file or directory
   #include "inat-tables.c"
                           ^
  compilation terminated.
  make[4]: *** [/path/to/kernel/buildperf/util/intel-pt-decoder/intel-pt-insn-decoder.o] Error 1
  make[4]: *** Waiting for unfinished jobs....
    LINK     /path/to/kernel/buildperf/plugin_function.so

This is caused by tools/perf/util/intel-pt-decoder/Build that, it tries
to generate $(OUTPUT)util/intel-pt-decoder/inat-tables.c atomatically
but forget to ensure the existance of $(OUTPUT)util/intel-pt-decoder
directory.

This patch fixes it by adding $(call rule_mkdir) like other similar rules.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1441087005-107540-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/intel-pt-decoder/Build | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/intel-pt-decoder/Build b/tools/perf/util/intel-pt-decoder/Build
index 240730d682c1..2386322ece4f 100644
--- a/tools/perf/util/intel-pt-decoder/Build
+++ b/tools/perf/util/intel-pt-decoder/Build
@@ -4,6 +4,7 @@ inat_tables_script = util/intel-pt-decoder/gen-insn-attr-x86.awk
 inat_tables_maps = util/intel-pt-decoder/x86-opcode-map.txt
 
 $(OUTPUT)util/intel-pt-decoder/inat-tables.c: $(inat_tables_script) $(inat_tables_maps)
+	$(call rule_mkdir)
 	@$(call echo-cmd,gen)$(AWK) -f $(inat_tables_script) $(inat_tables_maps) > $@ || rm -f $@
 
 $(OUTPUT)util/intel-pt-decoder/intel-pt-insn-decoder.o: util/intel-pt-decoder/inat.c $(OUTPUT)util/intel-pt-decoder/inat-tables.c
-- 
2.1.0

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