diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 000000000..98d98a296
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,81 @@
+cmake_minimum_required (VERSION 3.0)
+
+enable_testing()
+
+# Watch out on the order of the building, some modules and libraries 
+# must be built before others.
+
+# if (MSVC)
+#	add_compile_options(/W3 /WX)
+# else()
+# 	add_compile_options(-W -Wall -Werror)
+# endif()
+
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/h)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/h)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/alloc)
+
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/string)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/print)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/flt_arith)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/data)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/system)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/em_data)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/em_code)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/em_mes)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/object)
+
+# Incomplete, as it should regenerate the em_tables.
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules/src/read_em)
+
+
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/util/make)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/util/arch)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/util/amisc)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/util/cmisc)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/util/LLgen)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/util/misc)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/util/topgen)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/util/cpp)
+
+# Compilers and runtime libraries
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/lang/basic/src)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/lang/pc/comp)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/lang/cem/cemcom.ansi)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/lang/cem/cpp.ansi)
+
+
+# Should probably not be present, assuming it is installed on target.
+# add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/util/byacc)
+
+# Compilers / assemblers / linkers
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/6500/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/6800/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/6805/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/6809/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/arm/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/i386/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/i80/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/i86/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/m68020/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/m68k2/as)
+# Currently unported.
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/mips/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/ns/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/pdp/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/powerpc/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/s2650/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/vax4/as)
+# Does not build on current CLang 8.0
+# add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/vc4/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/z80/as)
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/z8000/as)
+
+# Old code generators
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/util/cgg)
+
+# CPU Specific coge generators
+#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mach/6500/cg)
+
+
+