[PATCH 03/30] perf build: Add subdir framework support

[Jiri Olsa]

Add support to make directory any time we build objects
out of the tree (O=/tmp/krava) and the output directory
does not exist.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Alexis Berlemont <alexis.berlemont@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
---
 tools/perf/Makefile.build | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/perf/Makefile.build b/tools/perf/Makefile.build
index 68556874ea86..cbd4d416a237 100644
--- a/tools/perf/Makefile.build
+++ b/tools/perf/Makefile.build
@@ -30,6 +30,10 @@ subdir-obj-y :=
 build-file := $(dir)/Build
 include $(build-file)
 
+# Create directory unless it exists
+quiet_cmd_mkdir = MKDIR    $(dir $@)
+      cmd_mkdir = $(if $(wildcard $(dir $@)),,@$(call echo-cmd,mkdir) mkdir -p $(dir $@))
+
 # Compile command
 quiet_cmd_cc_o_c = CC       $@
       cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
@@ -40,9 +44,11 @@ quiet_cmd_ld_multi = LD       $@
 
 # Build rules
 $(OUTPUT)%.o: %.c FORCE
+	$(call cmd_mkdir)
 	$(call if_changed_dep,cc_o_c)
 
 $(OUTPUT)%.o: %.S FORCE
+	$(call cmd_mkdir)
 	$(call if_changed_dep,cc_o_c)
 
 # Gather build data:
-- 
1.9.3

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