Check conformity of VNDK version

Allow BOARD_VNDK_VERSION=<version> only if the prebuilt VNDK for
the <version> is provided.

If PRODUCT_EXTRA_VNDK_VERSIONS is set, all the versions in the list
will be checked as well.

Bug: 38304393
Bug: 65377115
Bug: 68123344
Test: Set BOARD_VNDK_VERSION := current and check build
Test: Set PRODUCT_EXTRA_VNDK_VERSIONS := 27 and check if it returns
      error when prebuilts/vndk/v27/Android.mk is not provided

Change-Id: I2e43d71f1ea3717ab8c45de84c926ecc43193307

core/envsetup.mk

@@ -285,9 +285,14 @@ ifeq ($(AB_OTA_UPDATER),true)
 endif
 
 # Check BOARD_VNDK_VERSION
+define check_vndk_version
+  $(eval vndk_path := prebuilts/vndk/v$(1)) \
+  $(if $(wildcard $(vndk_path)/Android.bp),,$(error VNDK version $(1) not found))
+endef
+
 ifdef BOARD_VNDK_VERSION
   ifneq ($(BOARD_VNDK_VERSION),current)
-    $(error BOARD_VNDK_VERSION: Only "current" is implemented)
+    $(call check_vndk_version,$(BOARD_VNDK_VERSION))
   endif
 
   TARGET_VENDOR_TEST_SUFFIX := /vendor
@@ -295,6 +300,10 @@ else
   TARGET_VENDOR_TEST_SUFFIX :=
 endif
 
+ifdef PRODUCT_EXTRA_VNDK_VERSIONS
+  $(foreach v,$(PRODUCT_EXTRA_VNDK_VERSIONS),$(call check_vndk_version,$(v)))
+endif
+
 # ---------------------------------------------------------------
 # Set up configuration for target machine.
 # The following must be set:

core/soong_config.mk

@@ -112,6 +112,7 @@ $(call add_json_list, DeviceKernelHeaders,               $(TARGET_PROJECT_SYSTEM
 $(call add_json_bool, DevicePrefer32BitExecutables,      $(filter true,$(TARGET_PREFER_32_BIT_EXECUTABLES)))
 $(call add_json_val,  DeviceUsesClang,                   $(if $(USE_CLANG_PLATFORM_BUILD),$(USE_CLANG_PLATFORM_BUILD),false))
 $(call add_json_str,  DeviceVndkVersion,                 $(BOARD_VNDK_VERSION))
+$(call add_json_list, ExtraVndkVersions,                 $(PRODUCT_EXTRA_VNDK_VERSIONS))
 $(call add_json_bool, Malloc_not_svelte,                 $(call invert_bool,$(filter true,$(MALLOC_SVELTE))))
 $(call add_json_str,  Override_rs_driver,                $(OVERRIDE_RS_DRIVER))
 $(call add_json_bool, Treble,                            $(filter true,$(PRODUCT_FULL_TREBLE)))

target/product/vndk/Android.mk

@@ -96,7 +96,7 @@ endif
 	@chmod a+x $@
 
 include $(CLEAR_VARS)
-LOCAL_MODULE := vndk_package
+LOCAL_MODULE := vndk_current
 LOCAL_REQUIRED_MODULES := \
     $(addsuffix .vendor,$(VNDK_CORE_LIBRARIES)) \
     $(addsuffix .vendor,$(VNDK_SAMEPROCESS_LIBRARIES)) \
@@ -105,4 +105,17 @@ LOCAL_REQUIRED_MODULES := \
     vndksp.libraries.txt
 
 include $(BUILD_PHONY_PACKAGE)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := vndk_package
+ifeq (current,$(BOARD_VNDK_VERSION))
+LOCAL_REQUIRED_MODULES := \
+    vndk_current
+else
+LOCAL_REQUIRED_MODULES := \
+    vndk_v$(BOARD_VNDK_VERSION)
+endif
+LOCAL_REQUIRED_MODULES += \
+    $(foreach vndk_ver,$(PRODUCT_EXTRA_VNDK_VERSIONS),vndk_v$(vndk_ver))
+include $(BUILD_PHONY_PACKAGE)
 endif # BOARD_VNDK_VERSION is set