diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7de0ff40f..45794c931 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,8 +1,8 @@
 name: Build
 on: [pull_request]
 jobs:
-  build-mac:
-    name: Mac UI on ${{ matrix.os }}
+  build-mac-xcodebuild:
+    name: Mac UI / xcodebuild / ${{ matrix.os }}
     strategy:
       matrix:
         os: [macos-11, macos-12, macos-13, macos-14]
@@ -13,8 +13,44 @@ jobs:
     - name: Make
       working-directory: OSBindings/Mac
       run: xcodebuild CODE_SIGN_IDENTITY=-
-  build-sdl:
-    name: SDL UI on ${{ matrix.os }}
+  build-sdl-cmake:
+    name: SDL UI / cmake / ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macos-latest, ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Install dependencies
+      shell: bash
+      run: |
+        case $RUNNER_OS in
+          Linux)
+            sudo apt-get --allow-releaseinfo-change update
+            sudo apt-get --fix-missing install cmake gcc-10 libsdl2-dev
+            ;;
+          macOS)
+            brew install cmake sdl2
+            ;;
+        esac
+    - name: Make
+      shell: bash
+      run: |
+        case $RUNNER_OS in
+          Linux)
+            jobs=$(nproc --all)
+            ;;
+          macOS)
+            jobs=$(sysctl -n hw.activecpu)
+            ;;
+          *)
+            jobs=1
+        esac
+        cmake -S. -Bbuild -DCLK_UI=SDL -DCMAKE_BUILD_TYPE=Release
+        cmake --build build -v -j"$jobs"
+  build-sdl-scons:
+    name: SDL UI / scons / ${{ matrix.os }}
     strategy:
       matrix:
         os: [macos-11, macos-12, macos-13, macos-14, ubuntu-latest]
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 000000000..975729ae5
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,70 @@
+cmake_minimum_required(VERSION 3.19 FATAL_ERROR)
+
+project(CLK
+	LANGUAGES CXX
+	VERSION 24.01.22
+)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+set(CLK_UIS "SDL")
+#list(PREPEND CLK_UIS "QT")
+#if(APPLE)
+#	list(PREPEND CLK_UIS "MAC")
+#	set(CLK_DEFAULT_UI "MAC")
+#else()
+	set(CLK_DEFAULT_UI "SDL")
+#endif()
+
+set(CLK_UI ${CLK_DEFAULT_UI} CACHE STRING "User interface")
+set_property(CACHE CLK_UI PROPERTY STRINGS ${CLK_UIS})
+
+if(NOT CLK_UI IN_LIST CLK_UIS)
+	list(JOIN CLK_UIS ", " CLK_UIS_PRETTY)
+	message(FATAL_ERROR "Invalid value for 'CLK_UI'; must be one of ${CLK_UIS_PRETTY}")
+endif()
+
+message(STATUS "Configuring for ${CLK_UI} UI")
+
+list(PREPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+include("CLK_SOURCES")
+
+add_executable(clksignal ${CLK_SOURCES})
+
+if(MSVC)
+	target_compile_options(clksignal PRIVATE /W4)
+else()
+	# TODO: Add -Wpedandic.
+	target_compile_options(clksignal PRIVATE -Wall -Wextra)
+endif()
+
+find_package(ZLIB REQUIRED)
+target_link_libraries(clksignal PRIVATE ZLIB::ZLIB)
+
+if(CLK_UI STREQUAL "MAC")
+	enable_language(OBJC OBJCXX SWIFT)
+	# TODO: Build the Mac version.
+else()
+	find_package(OpenGL REQUIRED)
+	target_link_libraries(clksignal PRIVATE OpenGL::GL)
+	if(APPLE)
+		target_compile_definitions(clksignal PRIVATE "GL_SILENCE_DEPRECATION" "IGNORE_APPLE")
+	endif()
+endif()
+
+if(CLK_UI STREQUAL "QT")
+	# TODO: Build the Qt version.
+elseif(APPLE)
+	set(BLA_VENDOR Apple)
+	find_package(BLAS REQUIRED)
+	target_link_libraries(clksignal PRIVATE BLAS::BLAS)
+endif()
+
+if(CLK_UI STREQUAL "SDL")
+	find_package(SDL2 REQUIRED CONFIG REQUIRED COMPONENTS SDL2)
+	target_link_libraries(clksignal PRIVATE SDL2::SDL2)
+endif()
+
+# TODO: Investigate building on Windows.
diff --git a/cmake/CLK_SOURCES.cmake b/cmake/CLK_SOURCES.cmake
new file mode 100644
index 000000000..903728b12
--- /dev/null
+++ b/cmake/CLK_SOURCES.cmake
@@ -0,0 +1,256 @@
+# Generated by generate_CLK_SOURCES.
+
+set(CLK_SOURCES
+	Analyser/Dynamic/ConfidenceCounter.cpp
+	Analyser/Dynamic/ConfidenceSummary.cpp
+	Analyser/Dynamic/MultiMachine/Implementation/MultiConfigurable.cpp
+	Analyser/Dynamic/MultiMachine/Implementation/MultiJoystickMachine.cpp
+	Analyser/Dynamic/MultiMachine/Implementation/MultiKeyboardMachine.cpp
+	Analyser/Dynamic/MultiMachine/Implementation/MultiMediaTarget.cpp
+	Analyser/Dynamic/MultiMachine/Implementation/MultiProducer.cpp
+	Analyser/Dynamic/MultiMachine/Implementation/MultiSpeaker.cpp
+	Analyser/Dynamic/MultiMachine/MultiMachine.cpp
+	Analyser/Static/Acorn/Disk.cpp
+	Analyser/Static/Acorn/StaticAnalyser.cpp
+	Analyser/Static/Acorn/Tape.cpp
+	Analyser/Static/Amiga/StaticAnalyser.cpp
+	Analyser/Static/AmstradCPC/StaticAnalyser.cpp
+	Analyser/Static/AppleII/StaticAnalyser.cpp
+	Analyser/Static/AppleIIgs/StaticAnalyser.cpp
+	Analyser/Static/Atari2600/StaticAnalyser.cpp
+	Analyser/Static/AtariST/StaticAnalyser.cpp
+	Analyser/Static/Coleco/StaticAnalyser.cpp
+	Analyser/Static/Commodore/Disk.cpp
+	Analyser/Static/Commodore/File.cpp
+	Analyser/Static/Commodore/StaticAnalyser.cpp
+	Analyser/Static/Commodore/Tape.cpp
+	Analyser/Static/Disassembler/6502.cpp
+	Analyser/Static/Disassembler/Z80.cpp
+	Analyser/Static/DiskII/StaticAnalyser.cpp
+	Analyser/Static/Enterprise/StaticAnalyser.cpp
+	Analyser/Static/FAT12/StaticAnalyser.cpp
+	Analyser/Static/MSX/StaticAnalyser.cpp
+	Analyser/Static/MSX/Tape.cpp
+	Analyser/Static/Macintosh/StaticAnalyser.cpp
+	Analyser/Static/Oric/StaticAnalyser.cpp
+	Analyser/Static/Oric/Tape.cpp
+	Analyser/Static/PCCompatible/StaticAnalyser.cpp
+	Analyser/Static/Sega/StaticAnalyser.cpp
+	Analyser/Static/StaticAnalyser.cpp
+	Analyser/Static/ZX8081/StaticAnalyser.cpp
+	Analyser/Static/ZXSpectrum/StaticAnalyser.cpp
+
+	Components/1770/1770.cpp
+	Components/5380/ncr5380.cpp
+	Components/6522/Implementation/IRQDelegatePortHandler.cpp
+	Components/6560/6560.cpp
+	Components/6850/6850.cpp
+	Components/68901/MFP68901.cpp
+	Components/8272/i8272.cpp
+	Components/8530/z8530.cpp
+	Components/9918/Implementation/9918.cpp
+	Components/AY38910/AY38910.cpp
+	Components/AudioToggle/AudioToggle.cpp
+	Components/DiskII/DiskII.cpp
+	Components/DiskII/DiskIIDrive.cpp
+	Components/DiskII/IWM.cpp
+	Components/DiskII/MacintoshDoubleDensityDrive.cpp
+	Components/KonamiSCC/KonamiSCC.cpp
+	Components/OPx/OPLL.cpp
+	Components/RP5C01/RP5C01.cpp
+	Components/SN76489/SN76489.cpp
+	Components/Serial/Line.cpp
+
+	Inputs/Keyboard.cpp
+
+	InstructionSets/M50740/Decoder.cpp
+	InstructionSets/M50740/Executor.cpp
+	InstructionSets/M68k/Decoder.cpp
+	InstructionSets/M68k/Instruction.cpp
+	InstructionSets/PowerPC/Decoder.cpp
+	InstructionSets/x86/Decoder.cpp
+	InstructionSets/x86/Instruction.cpp
+
+	Machines/Amiga/Amiga.cpp
+	Machines/Amiga/Audio.cpp
+	Machines/Amiga/Bitplanes.cpp
+	Machines/Amiga/Blitter.cpp
+	Machines/Amiga/Chipset.cpp
+	Machines/Amiga/Copper.cpp
+	Machines/Amiga/Disk.cpp
+	Machines/Amiga/Keyboard.cpp
+	Machines/Amiga/MouseJoystick.cpp
+	Machines/Amiga/Sprites.cpp
+	Machines/AmstradCPC/AmstradCPC.cpp
+	Machines/AmstradCPC/Keyboard.cpp
+	Machines/Apple/ADB/Bus.cpp
+	Machines/Apple/ADB/Keyboard.cpp
+	Machines/Apple/ADB/Mouse.cpp
+	Machines/Apple/ADB/ReactiveDevice.cpp
+	Machines/Apple/AppleII/AppleII.cpp
+	Machines/Apple/AppleII/DiskIICard.cpp
+	Machines/Apple/AppleII/Joystick.cpp
+	Machines/Apple/AppleII/SCSICard.cpp
+	Machines/Apple/AppleII/Video.cpp
+	Machines/Apple/AppleIIgs/ADB.cpp
+	Machines/Apple/AppleIIgs/AppleIIgs.cpp
+	Machines/Apple/AppleIIgs/MemoryMap.cpp
+	Machines/Apple/AppleIIgs/Sound.cpp
+	Machines/Apple/AppleIIgs/Video.cpp
+	Machines/Apple/Macintosh/Audio.cpp
+	Machines/Apple/Macintosh/DriveSpeedAccumulator.cpp
+	Machines/Apple/Macintosh/Keyboard.cpp
+	Machines/Apple/Macintosh/Macintosh.cpp
+	Machines/Apple/Macintosh/Video.cpp
+	Machines/Atari/2600/Atari2600.cpp
+	Machines/Atari/2600/TIA.cpp
+	Machines/Atari/2600/TIASound.cpp
+	Machines/Atari/ST/AtariST.cpp
+	Machines/Atari/ST/DMAController.cpp
+	Machines/Atari/ST/IntelligentKeyboard.cpp
+	Machines/Atari/ST/Video.cpp
+	Machines/ColecoVision/ColecoVision.cpp
+	Machines/Commodore/1540/Implementation/C1540.cpp
+	Machines/Commodore/SerialBus.cpp
+	Machines/Commodore/Vic-20/Keyboard.cpp
+	Machines/Commodore/Vic-20/Vic20.cpp
+	Machines/Electron/Electron.cpp
+	Machines/Electron/Keyboard.cpp
+	Machines/Electron/Plus3.cpp
+	Machines/Electron/SoundGenerator.cpp
+	Machines/Electron/Tape.cpp
+	Machines/Electron/Video.cpp
+	Machines/Enterprise/Dave.cpp
+	Machines/Enterprise/EXDos.cpp
+	Machines/Enterprise/Enterprise.cpp
+	Machines/Enterprise/Keyboard.cpp
+	Machines/Enterprise/Nick.cpp
+	Machines/KeyboardMachine.cpp
+	Machines/MSX/DiskROM.cpp
+	Machines/MSX/Keyboard.cpp
+	Machines/MSX/MSX.cpp
+	Machines/MSX/MemorySlotHandler.cpp
+	Machines/MasterSystem/MasterSystem.cpp
+	Machines/Oric/BD500.cpp
+	Machines/Oric/Jasmin.cpp
+	Machines/Oric/Keyboard.cpp
+	Machines/Oric/Microdisc.cpp
+	Machines/Oric/Oric.cpp
+	Machines/Oric/Video.cpp
+	Machines/PCCompatible/PCCompatible.cpp
+	Machines/Sinclair/Keyboard/Keyboard.cpp
+	Machines/Sinclair/ZX8081/Video.cpp
+	Machines/Sinclair/ZX8081/ZX8081.cpp
+	Machines/Sinclair/ZXSpectrum/ZXSpectrum.cpp
+	Machines/Utility/MachineForTarget.cpp
+	Machines/Utility/MemoryFuzzer.cpp
+	Machines/Utility/MemoryPacker.cpp
+	Machines/Utility/ROMCatalogue.cpp
+	Machines/Utility/StringSerialiser.cpp
+	Machines/Utility/Typer.cpp
+
+	Outputs/CRT/CRT.cpp
+	Outputs/DisplayMetrics.cpp
+	Outputs/OpenGL/Primitives/Rectangle.cpp
+	Outputs/OpenGL/Primitives/Shader.cpp
+	Outputs/OpenGL/Primitives/TextureTarget.cpp
+	Outputs/OpenGL/ScanTarget.cpp
+	Outputs/OpenGL/ScanTargetGLSLFragments.cpp
+	Outputs/ScanTarget.cpp
+	Outputs/ScanTargets/BufferingScanTarget.cpp
+
+	Processors/6502/Implementation/6502Storage.cpp
+	Processors/6502/State/State.cpp
+	Processors/65816/Implementation/65816Base.cpp
+	Processors/65816/Implementation/65816Storage.cpp
+	Processors/Z80/Implementation/PartialMachineCycle.cpp
+	Processors/Z80/Implementation/Z80Base.cpp
+	Processors/Z80/Implementation/Z80Storage.cpp
+	Processors/Z80/State/State.cpp
+
+	Reflection/Struct.cpp
+
+	SignalProcessing/FIRFilter.cpp
+
+	Storage/Cartridge/Cartridge.cpp
+	Storage/Cartridge/Encodings/CommodoreROM.cpp
+	Storage/Cartridge/Formats/BinaryDump.cpp
+	Storage/Cartridge/Formats/PRG.cpp
+	Storage/Data/Commodore.cpp
+	Storage/Data/ZX8081.cpp
+	Storage/Disk/Controller/DiskController.cpp
+	Storage/Disk/Controller/MFMDiskController.cpp
+	Storage/Disk/DiskImage/Formats/2MG.cpp
+	Storage/Disk/DiskImage/Formats/AcornADF.cpp
+	Storage/Disk/DiskImage/Formats/AmigaADF.cpp
+	Storage/Disk/DiskImage/Formats/AppleDSK.cpp
+	Storage/Disk/DiskImage/Formats/CPCDSK.cpp
+	Storage/Disk/DiskImage/Formats/D64.cpp
+	Storage/Disk/DiskImage/Formats/DMK.cpp
+	Storage/Disk/DiskImage/Formats/FAT12.cpp
+	Storage/Disk/DiskImage/Formats/G64.cpp
+	Storage/Disk/DiskImage/Formats/HFE.cpp
+	Storage/Disk/DiskImage/Formats/IMD.cpp
+	Storage/Disk/DiskImage/Formats/IPF.cpp
+	Storage/Disk/DiskImage/Formats/MFMSectorDump.cpp
+	Storage/Disk/DiskImage/Formats/MSA.cpp
+	Storage/Disk/DiskImage/Formats/MacintoshIMG.cpp
+	Storage/Disk/DiskImage/Formats/NIB.cpp
+	Storage/Disk/DiskImage/Formats/OricMFMDSK.cpp
+	Storage/Disk/DiskImage/Formats/PCBooter.cpp
+	Storage/Disk/DiskImage/Formats/SSD.cpp
+	Storage/Disk/DiskImage/Formats/STX.cpp
+	Storage/Disk/DiskImage/Formats/Utility/ImplicitSectors.cpp
+	Storage/Disk/DiskImage/Formats/WOZ.cpp
+	Storage/Disk/Drive.cpp
+	Storage/Disk/Encodings/AppleGCR/Encoder.cpp
+	Storage/Disk/Encodings/AppleGCR/SegmentParser.cpp
+	Storage/Disk/Encodings/CommodoreGCR.cpp
+	Storage/Disk/Encodings/MFM/Encoder.cpp
+	Storage/Disk/Encodings/MFM/Parser.cpp
+	Storage/Disk/Encodings/MFM/SegmentParser.cpp
+	Storage/Disk/Encodings/MFM/Shifter.cpp
+	Storage/Disk/Parsers/CPM.cpp
+	Storage/Disk/Parsers/FAT.cpp
+	Storage/Disk/Track/PCMSegment.cpp
+	Storage/Disk/Track/PCMTrack.cpp
+	Storage/Disk/Track/TrackSerialiser.cpp
+	Storage/Disk/Track/UnformattedTrack.cpp
+	Storage/FileHolder.cpp
+	Storage/MassStorage/Encodings/MacintoshVolume.cpp
+	Storage/MassStorage/Formats/DAT.cpp
+	Storage/MassStorage/Formats/DSK.cpp
+	Storage/MassStorage/Formats/HDV.cpp
+	Storage/MassStorage/Formats/HFV.cpp
+	Storage/MassStorage/MassStorageDevice.cpp
+	Storage/MassStorage/SCSI/DirectAccessDevice.cpp
+	Storage/MassStorage/SCSI/SCSI.cpp
+	Storage/MassStorage/SCSI/Target.cpp
+	Storage/State/SNA.cpp
+	Storage/State/SZX.cpp
+	Storage/State/Z80.cpp
+	Storage/Tape/Formats/CAS.cpp
+	Storage/Tape/Formats/CSW.cpp
+	Storage/Tape/Formats/CommodoreTAP.cpp
+	Storage/Tape/Formats/OricTAP.cpp
+	Storage/Tape/Formats/TZX.cpp
+	Storage/Tape/Formats/TapePRG.cpp
+	Storage/Tape/Formats/TapeUEF.cpp
+	Storage/Tape/Formats/ZX80O81P.cpp
+	Storage/Tape/Formats/ZXSpectrumTAP.cpp
+	Storage/Tape/Parsers/Acorn.cpp
+	Storage/Tape/Parsers/Commodore.cpp
+	Storage/Tape/Parsers/MSX.cpp
+	Storage/Tape/Parsers/Oric.cpp
+	Storage/Tape/Parsers/Spectrum.cpp
+	Storage/Tape/Parsers/ZX8081.cpp
+	Storage/Tape/PulseQueuedTape.cpp
+	Storage/Tape/Tape.cpp
+	Storage/TimedEventLoop.cpp
+)
+
+if(CLK_UI STREQUAL "SDL")
+	list(APPEND CLK_SOURCES
+		OSBindings/SDL/main.cpp
+	)
+endif()
diff --git a/cmake/generate_CLK_SOURCES b/cmake/generate_CLK_SOURCES
new file mode 100755
index 000000000..fc5e2e344
--- /dev/null
+++ b/cmake/generate_CLK_SOURCES
@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+
+# Run this script to regenerate CLK_SOURCES.cmake after you add or remove any
+# source files.
+
+set -euo pipefail
+
+script_dir=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &> /dev/null && pwd)
+top_dir="$script_dir/.."
+
+out="$script_dir/CLK_SOURCES.cmake"
+trap 'rm -f "$tmp"' EXIT
+tmp=$(mktemp "$out.XXXXXXXX")
+
+awkscript='
+BEGIN {
+	print ind pre "CLK_SOURCES"
+}
+
+{
+	if (NR > 1 && last != $1)
+		print ""
+	last = $1
+	sub("^", ind "\t")
+	print
+}
+
+END {
+	print ind ")"
+}
+'
+
+write_sources() {
+	local ind="$1"
+	local pre="$2"
+	shift 2
+	find -s "$@" | awk -F/ -vind="$ind" -vpre="$pre" "$awkscript" || exit $?
+}
+
+cd "$top_dir"
+printf '# Generated by %s.\n\n' "${BASH_SOURCE[0]##*/}" > "$tmp"
+write_sources '' 'set(' [A-Z]* -name OSBindings -prune -o \
+	-name '*AllRAM*.cpp' -prune -o -name '*.cpp' -print >> "$tmp"
+# TODO: Add 'Mac/Clock Signal'
+# TODO: Add Qt
+for dir in SDL; do
+	ui=$(echo "${dir%%/*}" | tr '[:lower:]' '[:upper:]')
+	dir="OSBindings/$dir"
+	printf '\nif(CLK_UI STREQUAL "%s")\n' "$ui" >> "$tmp"
+	if [[ $ui = "MAC" ]]; then
+		args=('-name' '*.m' '-o' '-name' '*.metal' '-o' '-name' '*.mm' '-o' '-name' '*.swift')
+	else
+		args=('-name' '*.cpp')
+	fi
+	write_sources $'\t' 'list(APPEND ' "$dir" "${args[@]}" >> "$tmp"
+	printf 'endif()\n' >> "$tmp"
+done
+mv "$tmp" "$out"