[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 2/4] Makefile: clean timestamp generation rule
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PATCH 2/4] Makefile: clean timestamp generation rule |
Date: |
Tue, 15 Jan 2013 18:36:56 +0200 |
create timestamp by rule without sideeffects.
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
trace/Makefile.objs | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/trace/Makefile.objs b/trace/Makefile.objs
index 27fe26b..dde9d57 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
--
MST
[Qemu-devel] [PATCH 2/4] Makefile: clean timestamp generation rule,
Michael S. Tsirkin <=