diff --git a/meta/classes/cml1.bbclass b/meta/classes/cml1.bbclass
new file mode 100644
index 0000000..95cf584
--- /dev/null
+++ b/meta/classes/cml1.bbclass
@@ -0,0 +1,75 @@
+cml1_do_configure() {
+	set -e
+	unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS
+	oe_runmake oldconfig
+}
+
+EXPORT_FUNCTIONS do_configure
+addtask configure after do_unpack do_patch before do_compile
+
+inherit terminal
+
+OE_TERMINAL_EXPORTS += "HOST_EXTRACFLAGS HOSTLDFLAGS TERMINFO CROSS_CURSES_LIB CROSS_CURSES_INC"
+HOST_EXTRACFLAGS = "${BUILD_CFLAGS} ${BUILD_LDFLAGS}"
+HOSTLDFLAGS = "${BUILD_LDFLAGS}"
+CROSS_CURSES_LIB = "-lncurses -ltinfo"
+CROSS_CURSES_INC = '-DCURSES_LOC="<curses.h>"'
+TERMINFO = "${STAGING_DATADIR_NATIVE}/terminfo"
+
+KCONFIG_CONFIG_COMMAND ??= "menuconfig"
+python do_menuconfig() {
+    import shutil
+
+    try:
+        mtime = os.path.getmtime(".config")
+        shutil.copy(".config", ".config.orig")
+    except OSError:
+        mtime = 0
+
+    oe_terminal("${SHELL} -c \"make ${KCONFIG_CONFIG_COMMAND}; if [ \$? -ne 0 ]; then echo 'Command failed.'; printf 'Press any key to continue... '; read r; fi\"", '${PN} Configuration', d)
+
+    # FIXME this check can be removed when the minimum bitbake version has been bumped
+    if hasattr(bb.build, 'write_taint'):
+        try:
+            newmtime = os.path.getmtime(".config")
+        except OSError:
+            newmtime = 0
+
+        if newmtime > mtime:
+            bb.note("Configuration changed, recompile will be forced")
+            bb.build.write_taint('do_compile', d)
+}
+do_menuconfig[depends] += "ncurses-native:do_populate_sysroot"
+do_menuconfig[nostamp] = "1"
+addtask menuconfig after do_configure
+
+python do_diffconfig() {
+    import shutil
+    import subprocess
+
+    workdir = d.getVar('WORKDIR', True)
+    fragment = workdir + '/fragment.cfg'
+    configorig = '.config.orig'
+    config = '.config'
+
+    try:
+        md5newconfig = bb.utils.md5_file(configorig)
+        md5config = bb.utils.md5_file(config)
+        isdiff = md5newconfig != md5config
+    except IOError as e:
+        bb.fatal("No config files found. Did you do menuconfig ?\n%s" % e)
+
+    if isdiff:
+        statement = 'diff --unchanged-line-format= --old-line-format= --new-line-format="%L" ' + configorig + ' ' + config + '>' + fragment
+        subprocess.call(statement, shell=True)
+
+        shutil.copy(configorig, config)
+
+        bb.plain("Config fragment has been dumped into:\n %s" % fragment)
+    else:
+        if os.path.exists(fragment):
+            os.unlink(fragment)
+}
+
+do_diffconfig[nostamp] = "1"
+addtask diffconfig