diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 00000000..4ab4e6be
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,12 @@
+idf_component_register(
+    SRCS
+        "src/RTC_DS1307.cpp"
+        "src/RTC_DS3231.cpp"
+        "src/RTC_Micros.cpp"
+        "src/RTC_Millis.cpp"
+        "src/RTC_PCF8523.cpp"
+        "src/RTC_PCF8563.cpp"
+        "src/RTClib.cpp"
+    INCLUDE_DIRS "src"
+    REQUIRES arduino-esp32 Adafruit_BusIO
+)