update CMakeLists.txt

CMakeLists.txt

@@ -11,9 +11,20 @@ add_definitions("-std=c++2a -g")
 include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
 conan_basic_setup()
 
-add_executable(${PROJECT_NAME} src/main.cpp)
+add_library(commons_lib include/commons.cpp)
+target_include_directories (commons_lib
+  PUBLIC
+  ${CONAN_INCLUDE_DIRS}
+  include
+  )
 
-target_link_libraries(${PROJECT_NAME} ${CONAN_LIBS})
+target_link_libraries(commons_lib
+  PUBLIC
+  ${CONAN_LIBS}
+  )
 
 #enable_testing()
 #add_subdirectory(tests)
+set_target_properties(commons_lib PROPERTIES LINKER_LANGUAGE CXX)
+
+