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 <jo...@kernel.org>
Cc: Alexis Berlemont <alexis.berlem...@gmail.com>
Cc: Arnaldo Carvalho de Melo <a...@redhat.com>
Cc: Borislav Petkov <b...@alien8.de>
Cc: Corey Ashford <cjash...@linux.vnet.ibm.com>
Cc: David Ahern <dsah...@gmail.com>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Ingo Molnar <mi...@kernel.org>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Stephane Eranian <eran...@google.com>
---
 tools/build/Makefile.build | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
index 1706b93b0ef2..459a3441de78 100644
--- a/tools/build/Makefile.build
+++ b/tools/build/Makefile.build
@@ -32,6 +32,11 @@ subdir-obj-y :=
 build-file := $(dir)/Build
 include $(build-file)
 
+# Create directory unless it exists
+quiet_cmd_mkdir = MKDIR    $(dir $@)
+      cmd_mkdir = mkdir -p $(dir $@)
+     rule_mkdir = $(if $(wildcard $(dir $@)),,@$(call echo-cmd,mkdir) 
$(cmd_mkdir))
+
 # Compile command
 quiet_cmd_cc_o_c = CC       $@
       cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
@@ -42,9 +47,11 @@ quiet_cmd_ld_multi = LD       $@
 
 # Build rules
 $(OUTPUT)%.o: %.c FORCE
+       $(call rule_mkdir)
        $(call if_changed_dep,cc_o_c)
 
 $(OUTPUT)%.o: %.S FORCE
+       $(call rule_mkdir)
        $(call if_changed_dep,cc_o_c)
 
 # Gather build data:
-- 
1.9.3

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