update CI scripts

CMakeLists.txt

@@ -3,18 +3,29 @@ cmake_minimum_required(VERSION 3.8 FATAL_ERROR)
 
 if(NOT DEFINED PROJECT_NAME)
     set(BUILD_AS_STANDALONE ON)
+else()
+    set(BUILD_AS_STANDALONE OFF)
 endif()
 
 project(invoke.hpp)
 
 add_library(${PROJECT_NAME} INTERFACE)
+add_library(${PROJECT_NAME}::${PROJECT_NAME} ALIAS ${PROJECT_NAME})
+
 target_compile_features(${PROJECT_NAME} INTERFACE cxx_std_11)
 target_include_directories(${PROJECT_NAME} INTERFACE headers)
 
-if(BUILD_AS_STANDALONE)
-    option(BUILD_WITH_UNTESTS "Build with unit tests" ON)
-    if(BUILD_WITH_UNTESTS)
-        enable_testing()
-        add_subdirectory(untests)
-    endif()
+#
+# BUILD_AS_STANDALONE
+#
+
+if(NOT ${BUILD_AS_STANDALONE})
+    return()
 endif()
+
+enable_testing()
+set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+set_property(GLOBAL PROPERTY PREDEFINED_TARGETS_FOLDER "CMake")
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+
+add_subdirectory(untests)