Build both AIDL and HIDL targets.

Merged from http://go/wvgerrit/147689

The default is to build for AIDL Widevine service.
Use "-t hidl" in build_and_run_all_unit_tests.sh or
build_all_unit_tests.sh to build for HIDL service.

Test: ./build_all_unit_tests -t hidl
Test: ./build_and_run_all_unit_tests -t hidl
Test: ./build_all_unit_tests
Test: ./build_and_run_all_unit_tests

Bug: 217247987
Change-Id: Ie7c51033f4aba341c829ccc8f846a6cfeab76df3

libwvdrmengine/oemcrypto/test/common.mk

@@ -1,5 +1,16 @@
 LOCAL_PATH:= $(call my-dir)
 
+BUILD_TARGET?=
+ifeq ($(BUILD_TARGET), hidl)
+$(info Building 'oemcrypt_test' for HIDL service.)
+HIDL_EXTENSION := _hidl
+LIB_BINDER := libhidlbase
+else
+$(info Building 'oemcrypt_test' for AIDL service.)
+HIDL_EXTENSION :=
+LIB_BINDER := libbinder
+endif
+
 ifeq ($(filter mips mips64, $(TARGET_ARCH)),)
 # Tests need to be compatible with devices that do not support gnu hash-style
 LOCAL_LDFLAGS+=-Wl,--hash-style=both
@@ -38,7 +49,7 @@ LOCAL_STATIC_LIBRARIES := \
   libgtest_main \
   libwvlevel3 \
   libcdm_protos \
-  libcdm_utils_hidl \
+  libcdm_utils$(HIDL_EXTENSION) \
   libwv_kdo \
   libwv_odk \
 
@@ -46,7 +57,7 @@ LOCAL_SHARED_LIBRARIES := \
   libbase \
   libcrypto \
   libdl \
-  libhidlbase \
+  $(LIB_BINDER) \
   liblog \
   libmedia_omx \
   libprotobuf-cpp-lite \