perf build: Display make commands on V=1

Get more verbose output wrt displaying executed commands from make.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Cc: Alexis Berlemont <alexis.berlemont@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-68v67h59zoz7ilb1ggcuff3j@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
index b5ded207f49b..10df57237a66 100644
--- a/tools/build/Makefile.build
+++ b/tools/build/Makefile.build
@@ -13,8 +13,10 @@ __build:
 
 ifeq ($(V),1)
   quiet =
+  Q =
 else
   quiet=quiet_
+  Q=@
 endif
 
 build-dir := $(srctree)/tools/build
@@ -102,7 +104,7 @@ in-target := $(prefix)$(obj)-in.o
 PHONY += $(subdir-y)
 
 $(subdir-y):
-        @$(MAKE) -f $(build-dir)/Makefile.build dir=$(dir)/$@ obj=$(obj)
+        $(Q)$(MAKE) -f $(build-dir)/Makefile.build dir=$(dir)/$@ obj=$(obj)
 
 $(sort $(subdir-obj-y)): $(subdir-y) ;