Various fixes to PRODUCT_BUILD_<IMAGE> variables.

- Introduces PRODUCT_BUILD_VENDOR_BOOT_IMAGE.
  - Controls vendor_boot.img, replacing TARGET_NO_VENDOR_BOOT.
  - Matches the naming convention of other similar vars.
- Guards boot-debug.img behind BUILDING_BOOT_IMAGE
- Restructures BUILDING_BOOT_IMAGE to give priority to
  PRODUCT_BUILD_BOOT_IMAGE, as do other partitions.
- ^ for BUILDING_RECOVERY_IMAGE.

Test: PRODUCT_BUILD_{BOOT,RECOVERY,VENDOR_BOOT}_IMAGE := false
      m dist
      Observe no boot, boot-debug, recovery, or vendor_boot images.
Bug: 169968221
Bug: 170423509
Change-Id: I629bf08ba08e5db14c1bf92bb338fb3ce59d5b73

core/Makefile

@@ -2094,6 +2094,7 @@ endif # BUILDING_RAMDISK_IMAGE
 #
 # Note: it's intentional to skip signing for boot-debug.img, because it
 # can only be used if the device is unlocked with verification error.
+ifdef BUILDING_BOOT_IMAGE
 ifneq ($(strip $(TARGET_NO_KERNEL)),true)
 ifneq ($(strip $(BOARD_KERNEL_BINARIES)),)
   INSTALLED_DEBUG_BOOTIMAGE_TARGET := $(foreach k,$(subst kernel,boot-debug,$(BOARD_KERNEL_BINARIES)), \
@@ -2148,6 +2149,7 @@ bootimage_debug-nodeps: $(MKBOOTIMG)
 	$(foreach b,$(INSTALLED_DEBUG_BOOTIMAGE_TARGET),$(call build-debug-bootimage-target,$b))
 
 endif # TARGET_NO_KERNEL
+endif # BUILDING_BOOT_IMAGE
 
 ifeq ($(BUILDING_VENDOR_BOOT_IMAGE),true)
 ifeq ($(BUILDING_RAMDISK_IMAGE),true)

core/board_config.mk

@@ -342,23 +342,29 @@ endif
 
 # Are we building a boot image
 BUILDING_BOOT_IMAGE :=
+ifeq ($(PRODUCT_BUILD_BOOT_IMAGE),)
   ifeq ($(BOARD_USES_RECOVERY_AS_BOOT),true)
     BUILDING_BOOT_IMAGE :=
-else ifeq ($(PRODUCT_BUILD_BOOT_IMAGE),)
-  ifdef BOARD_BOOTIMAGE_PARTITION_SIZE
+  else ifdef BOARD_BOOTIMAGE_PARTITION_SIZE
     BUILDING_BOOT_IMAGE := true
   endif
 else ifeq ($(PRODUCT_BUILD_BOOT_IMAGE),true)
+  ifeq ($(BOARD_USES_RECOVERY_AS_BOOT),true)
+    $(warning *** PRODUCT_BUILD_BOOT_IMAGE is true, but so is BOARD_USES_RECOVERY_AS_BOOT.)
+    $(warning *** Skipping building boot image.)
+    BUILDING_BOOT_IMAGE :=
+  else
     BUILDING_BOOT_IMAGE := true
   endif
+endif
 .KATI_READONLY := BUILDING_BOOT_IMAGE
 
 # Are we building a recovery image
 BUILDING_RECOVERY_IMAGE :=
+ifeq ($(PRODUCT_BUILD_RECOVERY_IMAGE),)
   ifeq ($(BOARD_USES_RECOVERY_AS_BOOT),true)
     BUILDING_RECOVERY_IMAGE := true
-else ifeq ($(PRODUCT_BUILD_RECOVERY_IMAGE),)
-  ifdef BOARD_RECOVERYIMAGE_PARTITION_SIZE
+  else ifdef BOARD_RECOVERYIMAGE_PARTITION_SIZE
     ifeq (,$(filter true, $(TARGET_NO_KERNEL) $(TARGET_NO_RECOVERY)))
       BUILDING_RECOVERY_IMAGE := true
     endif
@@ -372,9 +378,16 @@ endif
 BUILDING_VENDOR_BOOT_IMAGE :=
 ifdef BOARD_BOOT_HEADER_VERSION
   ifneq ($(call math_gt_or_eq,$(BOARD_BOOT_HEADER_VERSION),3),)
+    ifneq ($(TARGET_NO_VENDOR_BOOT),)
+      $(warning TARGET_NO_VENDOR_BOOT has been deprecated. Please use PRODUCT_BUILD_VENDOR_BOOT_IMAGE.)
       ifneq ($(TARGET_NO_VENDOR_BOOT),true)
         BUILDING_VENDOR_BOOT_IMAGE := true
       endif
+    else ifeq ($(PRODUCT_BUILD_VENDOR_BOOT_IMAGE),)
+      BUILDING_VENDOR_BOOT_IMAGE := true
+    else ifeq ($(PRODUCT_BUILD_VENDOR_BOOT_IMAGE),true)
+      BUILDING_VENDOR_BOOT_IMAGE := true
+    endif
   endif
 endif
 .KATI_READONLY := BUILDING_VENDOR_BOOT_IMAGE

core/product.mk

@@ -380,6 +380,7 @@ _product_single_value_vars += PRODUCT_BUILD_RAMDISK_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_USERDATA_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_RECOVERY_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_BOOT_IMAGE
+_product_single_value_vars += PRODUCT_BUILD_VENDOR_BOOT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_VBMETA_IMAGE
 
 # List of boot jars delivered via apex