# -*- mode: makefile -*-

######################################################################
# Auto-generated tracing routines

ifeq ($(TRACE_BACKEND),dtrace)
TRACE_H_EXTRA_DEPS=$(obj)/generated-tracers-dtrace.h
endif
$(obj)/generated-tracers.h: $(obj)/generated-tracers.h-timestamp $(TRACE_H_EXTRA_DEPS)
$(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 $@ $(patsubst %-timestamp,%,$@)

$(obj)/generated-tracers.c: $(obj)/generated-tracers.c-timestamp
$(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

ifneq ($(TRACE_BACKEND),dtrace)
trace-obj-y += generated-tracers.o
endif


######################################################################
# Auto-generated DTrace code

# Normal practice is to name DTrace probe file with a '.d' extension
# but that gets picked up by QEMU's Makefile as an external dependency
# rule file. So we use '.dtrace' instead
$(obj)/generated-tracers-dtrace.dtrace: $(obj)/generated-tracers-dtrace.dtrace-timestamp
$(obj)/generated-tracers-dtrace.dtrace-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
	$(call quiet-command,$(TRACETOOL) \
		--format=d \
		--backend=$(TRACE_BACKEND) \
		< $< > $@,"  GEN   $(patsubst %-timestamp,%,$@)")
	@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)

$(obj)/generated-tracers-dtrace.h: trace/generated-tracers-dtrace.dtrace
	$(call quiet-command,dtrace -o $@ -h -s $<, "  GEN   $@")

$(obj)/generated-tracers-dtrace.o: trace/generated-tracers-dtrace.dtrace
	$(call quiet-command,dtrace -o $@ -G -s $<, "  GEN   $@")

trace-obj-$(CONFIG_TRACE_DTRACE) += generated-tracers-dtrace.o


ifeq ($(LIBTOOL),)
$(obj)/generated-tracers-dtrace.lo: $(obj)/generated-tracers-dtrace.dtrace
	@echo "missing libtool. please install and rerun configure."; exit 1
else
$(obj)/generated-tracers-dtrace.lo: $(obj)/generated-tracers-dtrace.dtrace
	$(call quiet-command,$(LIBTOOL) --mode=compile --tag=CC dtrace -o $@ -G -s $<, "  lt GEN $@")
endif


######################################################################
# Backend code

trace-obj-$(CONFIG_TRACE_DEFAULT) += default.o
trace-obj-$(CONFIG_TRACE_SIMPLE) += simple.o
trace-obj-$(CONFIG_TRACE_STDERR) += stderr.o
trace-obj-y += control.o