Introduce TARGET_BUILD_PDK for selecting build tweaks for the PDK

BUILD_PDK and some of the other infrastructure will go away once
we're done with the new new PDK work, but for now don't disturb
that stuff.

Change-Id: Ia39bf759ec03f203858ddcc4880af72bd132cb5a

core/Makefile

@@ -631,7 +631,7 @@ endef
 # Recovery image
 
 # If neither TARGET_NO_KERNEL nor TARGET_NO_RECOVERY are true
-ifeq (,$(filter true, $(TARGET_NO_KERNEL) $(TARGET_NO_RECOVERY) $(BUILD_TINY_ANDROID) $(BUILD_PDK)))
+ifeq (,$(filter true, $(TARGET_NO_KERNEL) $(TARGET_NO_RECOVERY) $(BUILD_TINY_ANDROID) $(TARGET_BUILD_PDK)))
 
 INSTALLED_RECOVERYIMAGE_TARGET := $(PRODUCT_OUT)/recovery.img
 

core/main.mk

@@ -218,7 +218,8 @@ ifeq (2,$(words $(PDK_BUILD_TYPE)))
 endif
 ifneq ($(PDK_BUILD_TYPE),)
   $(info PDK build type $(PDK_BUILD_TYPE))
-  BUILD_PDK:= true
+  BUILD_PDK:=true
+  TARGET_BUILD_PDK:=true
   include pdk/build/pdk.mk
   # force droid target
   MAKECMDGOALS:= $(subst $(PDK_BUILD_TYPE),droid,$(MAKECMDGOALS))
@@ -729,7 +730,7 @@ bootimage: $(INSTALLED_BOOTIMAGE_TARGET)
 ifeq ($(BUILD_TINY_ANDROID), true)
 INSTALLED_RECOVERYIMAGE_TARGET :=
 endif
-ifneq ($(BUILD_PDK),)
+ifneq ($(TARGET_BUILD_PDK),)
 INSTALLED_RECOVERYIMAGE_TARGET :=
 endif
 

core/tasks/apicheck.mk

@@ -18,7 +18,7 @@
 #
 
 # skip api check for TINY_ANDROID and PDK buid
-ifeq (,$(filter true, $(BUILD_TINY_ANDROID) $(BUILD_PDK)))
+ifeq (,$(filter true, $(BUILD_TINY_ANDROID) $(TARGET_BUILD_PDK)))
 
 .PHONY: checkapi