WIP first smoke test

tests/smoke/hello_cube/CMakeLists.txt

@@ -0,0 +1,17 @@
+cmake_minimum_required (VERSION 3.14)
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+if (WIN32)
+  add_executable(kraken_cube WIN32 main.cpp)
+  add_compile_definitions(UNICODE)
+else(WIN32)
+  add_executable(kraken_cube main.cpp)
+  set(CMAKE_CXX_COMPILER "clang++")
+endif(WIN32)
+
+target_include_directories(kraken_cube PRIVATE ${CMAKE_SOURCE_DIR}/hydra/include ${CMAKE_SOURCE_DIR}/kraken/public) 
+
+TARGET_LINK_LIBRARIES( kraken_cube kraken ${EXTRA_LIBS} )
+