6f329a5530
create timestamp by rule without sideeffects. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
59 lines
2.1 KiB
Makefile
59 lines
2.1 KiB
Makefile
# -*- mode: makefile -*-
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######################################################################
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# Auto-generated header for tracing routines
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$(obj)/generated-tracers.h: $(obj)/generated-tracers.h-timestamp
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@cmp -s $< $@ || cp $< $@
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$(obj)/generated-tracers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
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$(call quiet-command,$(TRACETOOL) \
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--format=h \
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--backend=$(TRACE_BACKEND) \
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< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
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######################################################################
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# Auto-generated tracing routines (non-DTrace)
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ifneq ($(TRACE_BACKEND),dtrace)
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$(obj)/generated-tracers.c: $(obj)/generated-tracers.c-timestamp
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@cmp -s $< $@ || cp $< $@
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$(obj)/generated-tracers.c-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
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$(call quiet-command,$(TRACETOOL) \
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--format=c \
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--backend=$(TRACE_BACKEND) \
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< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
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$(obj)/generated-tracers.o: $(obj)/generated-tracers.c $(obj)/generated-tracers.h
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endif
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######################################################################
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# Auto-generated DTrace code
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# Normal practice is to name DTrace probe file with a '.d' extension
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# but that gets picked up by QEMU's Makefile as an external dependency
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# rule file. So we use '.dtrace' instead
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ifeq ($(TRACE_BACKEND),dtrace)
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$(obj)/generated-tracers.dtrace: $(obj)/generated-tracers.dtrace-timestamp
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$(obj)/generated-tracers.dtrace-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
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$(call quiet-command,$(TRACETOOL) \
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--format=d \
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--backend=$(TRACE_BACKEND) \
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< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
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@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
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$(obj)/generated-tracers-dtrace.h: $(obj)/generated-tracers.dtrace
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$(call quiet-command,dtrace -o $@ -h -s $<, " GEN $@")
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$(obj)/generated-tracers.o: $(obj)/generated-tracers.dtrace
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endif
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######################################################################
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# Backend code
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util-obj-$(CONFIG_TRACE_DEFAULT) += default.o
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util-obj-$(CONFIG_TRACE_SIMPLE) += simple.o
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util-obj-$(CONFIG_TRACE_STDERR) += stderr.o
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util-obj-y += control.o
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util-obj-y += generated-tracers.o
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