We don't use any built-in rules and variables so we can
disable make's checks for that and build faster.
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/perf/Makefile.perf | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 1f71a32aea78..dd49b40e203b 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -84,6 +84,10 @@ ifneq ($(OUTPUT),)
#$(info Determined 'OUTPUT' to be $(OUTPUT))
endif
+# Do not use make's built-in rules and variables
+# (this increases performance and avoids hard-to-debug behaviour);
+MAKEFLAGS += -rR
+
$(OUTPUT)PERF-VERSION-FILE: ../../.git/HEAD
@$(SHELL_PATH) util/PERF-VERSION-GEN $(OUTPUT)
@touch $(OUTPUT)PERF-VERSION-FILE
--
1.9.3
--
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