From 1412cf58be821fa4339053d95d6c035c82461c2c Mon Sep 17 00:00:00 2001
From: "Daniel P. Berrange" <berrange@redhat.com>
Date: Thu, 16 Jun 2016 09:39:47 +0100
Subject: trace: add build framework for merging trace-events files

Switch make rules over to use trace-events-all as the
master trace events input file. Add rule that will
construct trace-events-all from $(trace-events-y).

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 1466066426-16657-2-git-send-email-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 trace/Makefile.objs | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

(limited to 'trace')

diff --git a/trace/Makefile.objs b/trace/Makefile.objs
index 5145b34d1a..cbe188e484 100644
--- a/trace/Makefile.objs
+++ b/trace/Makefile.objs
@@ -8,13 +8,16 @@
 tracetool-y = $(SRC_PATH)/scripts/tracetool.py
 tracetool-y += $(shell find $(SRC_PATH)/scripts/tracetool -name "*.py")
 
+$(BUILD_DIR)/trace-events-all: $(trace-events-y:%=$(SRC_PATH)/%)
+	$(call quiet-command,cat $^ > $@)
+
 ######################################################################
 # Auto-generated event descriptions for LTTng ust code
 
 ifeq ($(findstring ust,$(TRACE_BACKENDS)),ust)
 $(obj)/generated-ust-provider.h: $(obj)/generated-ust-provider.h-timestamp
 	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-$(obj)/generated-ust-provider.h-timestamp: $(SRC_PATH)/trace-events $(tracetool-y)
+$(obj)/generated-ust-provider.h-timestamp: $(BUILD_DIR)/trace-events-all $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=ust-events-h \
 		--backends=$(TRACE_BACKENDS) \
@@ -22,7 +25,7 @@ $(obj)/generated-ust-provider.h-timestamp: $(SRC_PATH)/trace-events $(tracetool-
 
 $(obj)/generated-ust.c: $(obj)/generated-ust.c-timestamp $(BUILD_DIR)/config-host.mak
 	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-$(obj)/generated-ust.c-timestamp: $(SRC_PATH)/trace-events $(tracetool-y)
+$(obj)/generated-ust.c-timestamp: $(BUILD_DIR)/trace-events-all $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=ust-events-c \
 		--backends=$(TRACE_BACKENDS) \
@@ -37,7 +40,7 @@ endif
 
 $(obj)/generated-events.h: $(obj)/generated-events.h-timestamp
 	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-$(obj)/generated-events.h-timestamp: $(SRC_PATH)/trace-events $(tracetool-y)
+$(obj)/generated-events.h-timestamp: $(BUILD_DIR)/trace-events-all $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=events-h \
 		--backends=$(TRACE_BACKENDS) \
@@ -45,7 +48,7 @@ $(obj)/generated-events.h-timestamp: $(SRC_PATH)/trace-events $(tracetool-y)
 
 $(obj)/generated-events.c: $(obj)/generated-events.c-timestamp $(BUILD_DIR)/config-host.mak
 	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-$(obj)/generated-events.c-timestamp: $(SRC_PATH)/trace-events $(tracetool-y)
+$(obj)/generated-events.c-timestamp: $(BUILD_DIR)/trace-events-all $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=events-c \
 		--backends=$(TRACE_BACKENDS) \
@@ -62,7 +65,7 @@ util-obj-y += generated-events.o
 
 $(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 $(tracetool-y)
+$(obj)/generated-tracers.h-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=h \
 		--backends=$(TRACE_BACKENDS) \
@@ -73,7 +76,7 @@ $(obj)/generated-tracers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/conf
 
 $(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 $(tracetool-y)
+$(obj)/generated-tracers.c-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=c \
 		--backends=$(TRACE_BACKENDS) \
@@ -90,7 +93,7 @@ $(obj)/generated-tracers.o: $(obj)/generated-tracers.c $(obj)/generated-tracers.
 ifeq ($(findstring dtrace,$(TRACE_BACKENDS)),dtrace)
 $(obj)/generated-tracers-dtrace.dtrace: $(obj)/generated-tracers-dtrace.dtrace-timestamp
 	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-$(obj)/generated-tracers-dtrace.dtrace-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(tracetool-y)
+$(obj)/generated-tracers-dtrace.dtrace-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=d \
 		--backends=$(TRACE_BACKENDS) \
@@ -109,7 +112,7 @@ endif
 
 $(obj)/generated-helpers-wrappers.h: $(obj)/generated-helpers-wrappers.h-timestamp
 	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-$(obj)/generated-helpers-wrappers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(tracetool-y)
+$(obj)/generated-helpers-wrappers.h-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=tcg-helper-wrapper-h \
 		--backend=$(TRACE_BACKENDS) \
@@ -117,7 +120,7 @@ $(obj)/generated-helpers-wrappers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_
 
 $(obj)/generated-helpers.h: $(obj)/generated-helpers.h-timestamp
 	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-$(obj)/generated-helpers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(tracetool-y)
+$(obj)/generated-helpers.h-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=tcg-helper-h \
 		--backend=$(TRACE_BACKENDS) \
@@ -125,7 +128,7 @@ $(obj)/generated-helpers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/conf
 
 $(obj)/generated-helpers.c: $(obj)/generated-helpers.c-timestamp
 	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-$(obj)/generated-helpers.c-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(tracetool-y)
+$(obj)/generated-helpers.c-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=tcg-helper-c \
 		--backend=$(TRACE_BACKENDS) \
@@ -138,7 +141,7 @@ target-obj-y += generated-helpers.o
 
 $(obj)/generated-tcg-tracers.h: $(obj)/generated-tcg-tracers.h-timestamp
 	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-$(obj)/generated-tcg-tracers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(tracetool-y)
+$(obj)/generated-tcg-tracers.h-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
 	$(call quiet-command,$(TRACETOOL) \
 		--format=tcg-h \
 		--backend=$(TRACE_BACKENDS) \
-- 
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