diff --git a/.gitignore b/.gitignore
index d5fe5726..39a340c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,8 @@
 tags
 **/generated/
 **/results/
+
+# Ignore cmake generated directories and files.
+**/CMakeFiles/
+**/cmake_install.cmake
+**/CMakeCache.txt
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 00000000..7865b7ed
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,12 @@
+# I don't know what minim is actually required.
+# Setting this to the version I'm using while
+# writing these files. We can figure out which
+# versions we want to support later. -- epan
+cmake_minimum_required(VERSION 3.18.2)
+
+project(kaleidoscope NONE)
+
+set(KALEIDOSCOPE_ROOT "${CMAKE_CURRENT_SOURCE_DIR}")
+set(VIRTUAL_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/../../../virtual")
+
+add_subdirectory( src )
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
new file mode 100644
index 00000000..72845c84
--- /dev/null
+++ b/src/CMakeLists.txt
@@ -0,0 +1,9 @@
+# I don't know what minim is actually required.
+# Setting this to the version I'm using while
+# writing these files. We can figure out which
+# versions we want to support later. -- epan
+cmake_minimum_required(VERSION 3.18.2)
+
+set(KALEIDOSCOPE_SRC ${CMAKE_CURRENT_SOURCE_DIR})
+
+add_subdirectory( kaleidoscope )
diff --git a/src/kaleidoscope/CMakeLists.txt b/src/kaleidoscope/CMakeLists.txt
new file mode 100644
index 00000000..9d2cf485
--- /dev/null
+++ b/src/kaleidoscope/CMakeLists.txt
@@ -0,0 +1,38 @@
+# I don't know what minim is actually required.
+# Setting this to the version I'm using while
+# writing these files. We can figure out which
+# versions we want to support later. -- epan
+cmake_minimum_required(VERSION 3.18.2)
+
+add_library(bitfields bitfields.cpp)
+target_include_directories(bitfields
+  PRIVATE
+  ${KALEIDOSCOPE_SRC}
+  "${VIRTUAL_ROOT}/cores/arduino" )
+
+add_library(hooks hooks.cpp)
+target_include_directories(hooks
+  PRIVATE
+  ${KALEIDOSCOPE_SRC}
+  "${VIRTUAL_ROOT}/cores/arduino" )
+
+#add_subdirectory(
+#  "${KALEIDOSCOPE_SRC}/kaleidoscope_internal"
+#  "${kaleidoscope_BINARY_DIR}/src/kaleidoscope_internal" )
+
+add_library(key_events key_events.cpp)
+target_include_directories(key_events
+  PRIVATE
+  "${CMAKE_CURRENT_SOURCE_DIR}"
+  "${CMAKE_CURRENT_SOURCE_DIR}/device"
+  "${KALEIDOSCOPE_SRC}/kaleidocope_internal"
+  "${VIRTUAL_ROOT}/cores/arduino" )
+
+#add_subdirectory( device )
+#add_subdirectory( driver )
+#add_subdirectory( plugin )
+#add_subdirectory( sim )
+#add_subdirectory( simulator )
+#add_subdirectory( testing )
+#add_subdirectory( testing )
+#add_subdirectory( util )
diff --git a/src/kaleidoscope_internal/CMakeLists.txt b/src/kaleidoscope_internal/CMakeLists.txt
new file mode 100644
index 00000000..b0ac76d8
--- /dev/null
+++ b/src/kaleidoscope_internal/CMakeLists.txt
@@ -0,0 +1,6 @@
+# I don't know what minim is actually required.
+# Setting this to the version I'm using while
+# writing these files. We can figure out which
+# versions we want to support later. -- epan
+cmake_minimum_required(VERSION 3.18.2)
+