Added necessary library and fix actions logic

CMakeLists.txt

@@ -2,6 +2,16 @@ cmake_minimum_required(VERSION 3.5)
 
 project(wxMinesweeper LANGUAGES CXX)
 
-add_subdirectory(libs/wxWidgets-3.2.4)
-add_executable(wxMinesweeper field.cpp field.h minesweeper.cpp minesweeper.h)
-target_link_libraries(wxMinesweeper wx::net wx::core wx::base)
+include(ExternalProject)
+ExternalProject_Add(wxwidgets
+  GIT_REPOSITORY https://github.com/wxwidge
+  GIT_TAG        origin/release/v3.2.4
+  STEP_TARGETS   build
+)
+aux_source_directory(. SRC_LIST)
+find_package(wxWidgets REQUIRED COMPONENTS net core base)
+if(wxWidgets_USE_FILE) # not defined in CONFIG mode
+    include(${wxWidgets_USE_FILE})
+endif()
+add_executable(${PROJECT_NAME} ${SRC_LIST})
+target_link_libraries(${PROJECT_NAME} ${wxWidgets_LIBRARIES})