Add library test makefile solutions.

Change-Id: Ibc8df9b0e2342683158936bf011425780df8f02a
diff --git a/core/target_test_internal.mk b/core/target_test_internal.mk
new file mode 100644
index 0000000..e531356
--- /dev/null
+++ b/core/target_test_internal.mk
@@ -0,0 +1,19 @@
+#######################################################
+## Shared definitions for all target test compilations.
+#######################################################
+
+LOCAL_CFLAGS += -DGTEST_OS_LINUX_ANDROID -DGTEST_HAS_STD_STRING
+
+LOCAL_C_INCLUDES += external/gtest/include
+LOCAL_STATIC_LIBRARIES += libgtest libgtest_main
+
+ifndef LOCAL_SDK_VERSION
+LOCAL_C_INCLUDES += bionic \
+                    bionic/libstdc++/include \
+                    external/stlport/stlport
+LOCAL_SHARED_LIBRARIES += libstlport
+endif
+
+ifndef LOCAL_MODULE_PATH
+LOCAL_MODULE_PATH := $(TARGET_OUT_DATA_NATIVE_TESTS)/$(LOCAL_MODULE)
+endif