diff --git a/CMakeLists.txt b/CMakeLists.txt
index e69de29..d99a2cf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -0,0 +1,10 @@
+
+cmake_minimum_required(VERSION 3.21)
+
+project(accordion LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+add_subdirectory(client)
+add_subdirectory(server)
diff --git a/client/CMakeLists.txt b/client/CMakeLists.txt
index e69de29..7290c3c 100644
--- a/client/CMakeLists.txt
+++ b/client/CMakeLists.txt
@@ -0,0 +1,13 @@
+
+cmake_minimum_required(VERSION 3.21)
+
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+    project(accordion-client LANGUAGES CXX)
+
+    set(CMAKE_CXX_STANDARD 20)
+    set(CMAKE_CXX_STANDARD_REQUIRED ON)
+endif()
+
+add_executable(accordion-client
+    src/main.cpp
+)
diff --git a/server/CMakeLists.txt b/server/CMakeLists.txt
index e69de29..9584ff4 100644
--- a/server/CMakeLists.txt
+++ b/server/CMakeLists.txt
@@ -0,0 +1,13 @@
+
+cmake_minimum_required(VERSION 3.21)
+
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+    project(accordion-server LANGUAGES CXX)
+
+    set(CMAKE_CXX_STANDARD 20)
+    set(CMAKE_CXX_STANDARD_REQUIRED ON)
+endif()
+
+add_executable(accordion-server
+    src/main.cpp
+)