From 6f329a55305c3b14da3c7b35f19379bae745e728 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Tue, 15 Jan 2013 14:47:33 +0200 Subject: Makefile: clean timestamp generation rule create timestamp by rule without sideeffects. Signed-off-by: Michael S. Tsirkin --- trace/Makefile.objs | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/trace/Makefile.objs b/trace/Makefile.objs index 27fe26b5c2..dde9d5784e 100644 --- a/trace/Makefile.objs +++ b/trace/Makefile.objs @@ -4,24 +4,24 @@ # Auto-generated header for tracing routines $(obj)/generated-tracers.h: $(obj)/generated-tracers.h-timestamp + @cmp -s $< $@ || cp $< $@ $(obj)/generated-tracers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(call quiet-command,$(TRACETOOL) \ --format=h \ --backend=$(TRACE_BACKEND) \ < $< > $@," GEN $(patsubst %-timestamp,%,$@)") - @cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@) ###################################################################### # Auto-generated tracing routines (non-DTrace) ifneq ($(TRACE_BACKEND),dtrace) $(obj)/generated-tracers.c: $(obj)/generated-tracers.c-timestamp + @cmp -s $< $@ || cp $< $@ $(obj)/generated-tracers.c-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(call quiet-command,$(TRACETOOL) \ --format=c \ --backend=$(TRACE_BACKEND) \ < $< > $@," GEN $(patsubst %-timestamp,%,$@)") - @cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@) $(obj)/generated-tracers.o: $(obj)/generated-tracers.c $(obj)/generated-tracers.h endif -- cgit v1.2.3