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| author | Michael S. Tsirkin <mst@redhat.com> | 2013-01-15 14:47:33 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2013-01-30 01:31:08 +0200 |
| commit | 6f329a55305c3b14da3c7b35f19379bae745e728 (patch) | |
| tree | 4c19fedbf7b471088f72acf5968ad6796e139982 /trace/Makefile.objs | |
| parent | 4b25966ab976f3a7fd9008193b2defcc82f8f04d (diff) | |
Makefile: clean timestamp generation rule
create timestamp by rule without sideeffects.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'trace/Makefile.objs')
| -rw-r--r-- | trace/Makefile.objs | 4 |
1 files 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 |