Move check-api to definition.mk

1) Move check-api to definition.mk, so it can be used in other places.
2) Add additional dependency to the api-stub module to consolidate the
apicheck dependency. Previously you have to run 2 "make"s in a row and
only in the 2nd run apicheck is run, due to a gnu-make optimization.

Bug: 7540265
Change-Id: Ib24ed87d9330027a9f95ed7b16dd4002cc0e3198

2 files changed, 48 insertions, 35 deletions

diff --git a/core/definitions.mk b/core/definitions.mk
index 06db960..4f4e583 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2064,6 +2064,29 @@ $(if $(_erm_new_modules),$(eval $(1) += $(_erm_new_modules))\
 endef
 
 ###########################################################
+## API Check
+###########################################################
+
+# eval this to define a rule that runs apicheck.
+#
+# Args:
+#    $(1)  target
+#    $(2)  stable api file
+#    $(3)  api file to be tested
+#    $(4)  arguments for apicheck
+#    $(5)  command to run if apicheck failed
+#    $(6)  target dependent on this api check
+#    $(7)  additional dependencies
+define check-api
+$(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/$(strip $(1))-timestamp: $(2) $(3) $(APICHECK) $(7)
+	@echo "Checking API:" $(1)
+	$(hide) ( $(APICHECK_COMMAND) $(4) $(2) $(3) || ( $(5) ; exit 38 ) )
+	$(hide) mkdir -p $$(dir $$@)
+	$(hide) touch $$@
+$(6): $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/$(strip $(1))-timestamp
+endef
+
+###########################################################
 ## Other includes
 ###########################################################
 
diff --git a/core/tasks/apicheck.mk b/core/tasks/apicheck.mk
index 8d9928e..2c1300b 100644
--- a/core/tasks/apicheck.mk
+++ b/core/tasks/apicheck.mk
@@ -22,58 +22,48 @@ ifeq (,$(filter true, $(BUILD_TINY_ANDROID) $(TARGET_BUILD_PDK)))
 
 .PHONY: checkapi
 
-# eval this to define a rule that runs apicheck.
-#
-# Args:
-#    $(1)  target
-#    $(2)  stable api file
-#    $(3)  api file to be tested
-#    $(4)  arguments for apicheck
-#    $(5)  command to run if apicheck failed
-define check-api
-$(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/$(strip $(1))-timestamp: $(2) $(3) $(APICHECK)
-	@echo "Checking API:" $(1)
-	$(hide) ( $(APICHECK_COMMAND) $(4) $(2) $(3) || ( $(5) ; exit 38 ) )
-	$(hide) mkdir -p $$(dir $$@)
-	$(hide) touch $$@
-checkapi: $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/$(strip $(1))-timestamp
-endef
-
 # Run the checkapi rules by default.
 droidcore: checkapi
 
 last_released_sdk_version := $(lastword $(call numerically_sort, \
-            $(filter-out $(SRC_API_DIR)/current, \
+            $(filter-out current, \
                 $(patsubst $(SRC_API_DIR)/%.txt,%, $(wildcard $(SRC_API_DIR)/*.txt)) \
              )\
         ))
 
 # INTERNAL_PLATFORM_API_FILE is the one build by droiddoc.
+# Note that since INTERNAL_PLATFORM_API_FILE is the byproduct of api-stubs module,
+# (See frameworks/base/Android.mk)
+# we need to add api-stubs as additional dependency of the api check.
 
 # Check that the API we're building hasn't broken the last-released
 # SDK version.
 $(eval $(call check-api, \
-	checkapi-last, \
-	$(SRC_API_DIR)/$(last_released_sdk_version).txt, \
-	$(INTERNAL_PLATFORM_API_FILE), \
-	-hide 2 -hide 3 -hide 4 -hide 5 -hide 6 -hide 24 -hide 25 \
-	-error 7 -error 8 -error 9 -error 10 -error 11 -error 12 -error 13 -error 14 -error 15 \
-	-error 16 -error 17 -error 18 , \
-	cat $(BUILD_SYSTEM)/apicheck_msg_last.txt \
-	))
+    checkapi-last, \
+    $(SRC_API_DIR)/$(last_released_sdk_version).txt, \
+    $(INTERNAL_PLATFORM_API_FILE), \
+    -hide 2 -hide 3 -hide 4 -hide 5 -hide 6 -hide 24 -hide 25 \
+    -error 7 -error 8 -error 9 -error 10 -error 11 -error 12 -error 13 -error 14 -error 15 \
+    -error 16 -error 17 -error 18 , \
+    cat $(BUILD_SYSTEM)/apicheck_msg_last.txt, \
+    checkapi, \
+    $(call doc-timestamp-for,api-stubs) \
+    ))
 
 # Check that the API we're building hasn't changed from the not-yet-released
 # SDK version.
 $(eval $(call check-api, \
-	checkapi-current, \
-	$(SRC_API_DIR)/current.txt, \
-	$(INTERNAL_PLATFORM_API_FILE), \
-	-error 2 -error 3 -error 4 -error 5 -error 6 \
-	-error 7 -error 8 -error 9 -error 10 -error 11 -error 12 -error 13 -error 14 -error 15 \
-	-error 16 -error 17 -error 18 -error 19 -error 20 -error 21 -error 23 -error 24 \
-	-error 25 , \
-	cat $(BUILD_SYSTEM)/apicheck_msg_current.txt \
-	))
+    checkapi-current, \
+    $(SRC_API_DIR)/current.txt, \
+    $(INTERNAL_PLATFORM_API_FILE), \
+    -error 2 -error 3 -error 4 -error 5 -error 6 \
+    -error 7 -error 8 -error 9 -error 10 -error 11 -error 12 -error 13 -error 14 -error 15 \
+    -error 16 -error 17 -error 18 -error 19 -error 20 -error 21 -error 23 -error 24 \
+    -error 25 , \
+    cat $(BUILD_SYSTEM)/apicheck_msg_current.txt, \
+    checkapi, \
+    $(call doc-timestamp-for,api-stubs) \
+    ))
 
 .PHONY: update-api
 update-api: $(INTERNAL_PLATFORM_API_FILE) | $(ACP)