diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
new file mode 100644
index 0000000..a97d014
--- /dev/null
+++ b/src/CMakeLists.txt
@@ -0,0 +1,34 @@
+################################################################
+# Name:		CMakeLists.txt
+# Purpose:	Input file for CMake for the Scyther tool
+# Author:	Cas Cremers
+################################################################
+
+# Scyther project
+project (Scyther)
+# I need 2.4 for flex/etc although it does not run yet
+#CMAKE_MINIMUM_REQUIRED(VERSION 2.4)
+
+# List all the source files
+set (Scyther_sources
+	arachne.c binding.c claim.c color.c compiler.c cost.c
+	debug.c depend.c dotout.c error.c heuristic.c hidelevel.c
+	intruderknowledge.c knowledge.c label.c list.c main.c mgu.c
+	prune_bounds.c prune_theorems.c role.c 
+	specialterm.c states.c switches.c symbol.c system.c tac.c
+	termlist.c termmap.c term.c timer.c type.c warshall.c xmlout.c
+	parser.c scanner.c
+  )
+
+# If we are in a debug mode we want to be strict
+set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wall -DDEBUG")
+
+# Determine version number
+include (SVNVersion.cmake)
+
+# Make scanner and parser
+include (ScannerParser.cmake)
+
+# Make the Scyther linux binary
+add_executable (scyther-linux ${Scyther_sources})
+
diff --git a/src/FindBISON.cmake b/src/FindBISON.cmake
new file mode 100644
index 0000000..552ce0d
--- /dev/null
+++ b/src/FindBISON.cmake
@@ -0,0 +1,32 @@
+# - Try to find Bison
+# Once done this will define
+#
+#  BISON_FOUND - system has Bison
+#  BISON_EXECUTABLE - path of the bison executable
+#  BISON_VERSION - the version string, like "2.5.31"
+#
+
+
+FIND_PROGRAM(BISON_EXECUTABLE NAMES bison)
+
+#INCLUDE(MacroEnsureVersion)
+
+IF(BISON_EXECUTABLE)
+    SET(BISON_FOUND TRUE)
+
+    EXECUTE_PROCESS(COMMAND ${BISON_EXECUTABLE} --version
+        OUTPUT_VARIABLE _BISON_VERSION
+    )
+    string (REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" BISON_VERSION "${_bison_VERSION}")
+ENDIF(BISON_EXECUTABLE)
+
+IF(BISON_FOUND)
+  IF(NOT Bison_FIND_QUIETLY)
+    MESSAGE(STATUS "Found Bison: ${BISON_EXECUTABLE}")
+  ENDIF(NOT Bison_FIND_QUIETLY)
+ELSE(BISON_FOUND)
+  IF(Bison_FIND_REQUIRED)
+    MESSAGE(FATAL_ERROR "Could not find Bison")
+  ENDIF(Bison_FIND_REQUIRED)
+ENDIF(BISON_FOUND)
+
diff --git a/src/FindFLEX.cmake b/src/FindFLEX.cmake
new file mode 100644
index 0000000..30285f1
--- /dev/null
+++ b/src/FindFLEX.cmake
@@ -0,0 +1,32 @@
+# - Try to find Flex
+# Once done this will define
+#
+#  FLEX_FOUND - system has Flex
+#  FLEX_EXECUTABLE - path of the flex executable
+#  FLEX_VERSION - the version string, like "2.5.31"
+#
+
+
+FIND_PROGRAM(FLEX_EXECUTABLE NAMES flex)
+
+#INCLUDE(MacroEnsureVersion)
+
+IF(FLEX_EXECUTABLE)
+    SET(FLEX_FOUND TRUE)
+
+    EXECUTE_PROCESS(COMMAND ${FLEX_EXECUTABLE} --version
+        OUTPUT_VARIABLE _FLEX_VERSION
+    )
+    string (REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" FLEX_VERSION "${_FLEX_VERSION}")
+ENDIF(FLEX_EXECUTABLE)
+
+IF(FLEX_FOUND)
+  IF(NOT Flex_FIND_QUIETLY)
+    MESSAGE(STATUS "Found Flex: ${FLEX_EXECUTABLE}")
+  ENDIF(NOT Flex_FIND_QUIETLY)
+ELSE(FLEX_FOUND)
+  IF(Flex_FIND_REQUIRED)
+    MESSAGE(FATAL_ERROR "Could not find Flex")
+  ENDIF(Flex_FIND_REQUIRED)
+ENDIF(FLEX_FOUND)
+
diff --git a/src/SVNVersion.cmake b/src/SVNVersion.cmake
new file mode 100644
index 0000000..1ddd45f
--- /dev/null
+++ b/src/SVNVersion.cmake
@@ -0,0 +1,31 @@
+################################################################
+# Name:		SVNVersion.cmake
+# Purpose:	Determine subversion revision id for Scyther
+#		and write it into a macro in version.h
+# Author:	Cas Cremers
+################################################################
+
+# TODO: Technically, this only needs to be redone each time a file
+# changes, so this might be a target with dependencies on all files.
+
+# Checkout version info
+set_source_files_properties(version.h
+	PROPERTIES
+	GENERATED true)
+find_program (SVNVERSION_EXECUTABLE NAMES svnversion)
+if (SVNVERSION_EXECUTABLE)
+	# svnversion found; we should always build this
+	message (STATUS "Generating version.h using svnversion command")
+	exec_program (${SVNVERSION_EXECUTABLE}
+		OUTPUT_VARIABLE SVN_Version
+	)
+	message (STATUS "svnversion gave ${SVN_Version}")
+	file (WRITE version.h
+		"#define SVNVERSION \"${SVN_Version}\"\n"
+	)
+else (SVNVERSION_EXECUTABLE)
+	# No svnversion. what do we write then? just empty...?
+	message (STATUS "Generating empty version.h")
+	file (WRITE version.h "")
+endif (SVNVERSION_EXECUTABLE)
+
diff --git a/src/ScannerParser.cmake b/src/ScannerParser.cmake
new file mode 100644
index 0000000..e5dd107
--- /dev/null
+++ b/src/ScannerParser.cmake
@@ -0,0 +1,41 @@
+################################################################
+# Name:		ScannerParser.cmake
+# Purpose:	If flex/bison are available, generate parser and scanner
+# Author:	Cas Cremers
+################################################################
+
+# Make the scanner using flex, if it can be found
+include(FindFLEX.cmake)
+if (FLEX_FOUND)
+	set_source_files_properties(scanner.c PROPERTIES GENERATED true)
+	ADD_CUSTOM_COMMAND (
+		OUTPUT	scanner.c
+		DEPENDS scanner.l
+		COMMAND	${FLEX_EXECUTABLE}
+		# TODO: I should look up from which version the -o
+		# switch works, might not be portable.
+		ARGS	-o scanner.c scanner.l
+		COMMENT	"Building scanner.c from scanner.l using flex"
+	)
+else (FLEX_FOUND)
+	message (STATUS "Because flex is not found, we will use the existing scanner.c")
+endif (FLEX_FOUND)
+
+# Make the parser using bison, if it can be found
+include(FindBISON.cmake)
+if (BISON_FOUND)
+	set_source_files_properties(parser.c PROPERTIES GENERATED true)
+	ADD_CUSTOM_COMMAND (
+		OUTPUT	parser.c
+		DEPENDS parser.y
+		COMMAND	${BISON_EXECUTABLE}
+		# TODO: I should look up from which version the -o
+		# switch works, might not be portable.
+		ARGS	-o parser.c parser.y
+		COMMENT	"Building parser.c from parser.y using bison"
+	)
+else (BISON_FOUND)
+	message (STATUS "Because bison is not found, we will use the existing parser.c")
+endif (BISON_FOUND)
+
+