diff --git a/bin/logger/Makefile.am b/bin/logger/Makefile.am
index 876883c..08ef123 100644
--- a/bin/logger/Makefile.am
+++ b/bin/logger/Makefile.am
@@ -20,3 +20,10 @@ if SML_SUPPORT
 vzlogger_LDADD += $(DEPS_SML_LIBS)
 AM_CFLAGS += $(DEPS_SML_CFLAGS)
 endif
+
+# D0 support
+####################################################################
+if D0_SUPPORT
+vzlogger_LDADD += $(DEPS_D0_LIBS)
+AM_CFLAGS += $(DEPS_D0_CFLAGS)
+endif
diff --git a/bin/logger/Makefile.in b/bin/logger/Makefile.in
index 707c3b8..b140fac 100644
--- a/bin/logger/Makefile.in
+++ b/bin/logger/Makefile.in
@@ -44,6 +44,11 @@ bin_PROGRAMS = vzlogger$(EXEEXT)
 ####################################################################
 @SML_SUPPORT_TRUE@am__append_4 = $(DEPS_SML_LIBS)
 @SML_SUPPORT_TRUE@am__append_5 = $(DEPS_SML_CFLAGS)
+
+# D0 support
+####################################################################
+@D0_SUPPORT_TRUE@am__append_6 = $(DEPS_D0_LIBS)
+@D0_SUPPORT_TRUE@am__append_7 = $(DEPS_D0_CFLAGS)
 subdir = bin/logger
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
@@ -67,7 +72,8 @@ am__DEPENDENCIES_1 =
 @LOCAL_SUPPORT_TRUE@am__DEPENDENCIES_2 = $(am__DEPENDENCIES_1)
 @SML_SUPPORT_TRUE@am__DEPENDENCIES_3 = $(am__DEPENDENCIES_1)
 vzlogger_DEPENDENCIES = $(top_srcdir)/src/libmeter.a \
-	$(am__DEPENDENCIES_2) $(am__DEPENDENCIES_3)
+	$(am__DEPENDENCIES_2) $(am__DEPENDENCIES_3) \
+	$(am__DEPENDENCIES_1)
 vzlogger_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(vzlogger_LDFLAGS) \
 	$(LDFLAGS) -o $@
 DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
@@ -180,12 +186,12 @@ top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 AM_CFLAGS = -Wall -D_REENTRANT -std=gnu99 $(DEPS_VZ_CFLAGS) \
-	$(am__append_3) $(am__append_5)
+	$(am__append_3) $(am__append_5) $(am__append_7)
 AM_CPPFLAGS = -I$(top_srcdir)/include -Iinclude
 vzlogger_SOURCES = src/vzlogger.c src/channel.c src/api.c \
 	src/configuration.c src/threads.c src/buffer.c $(am__append_1)
 vzlogger_LDADD = $(top_srcdir)/src/libmeter.a $(am__append_2) \
-	$(am__append_4)
+	$(am__append_4) $(am__append_6)
 vzlogger_LDFLAGS = -lpthread -lm $(DEPS_VZ_LIBS)
 all: all-am
 
diff --git a/config.h.in b/config.h.in
index b1a3859..3f75aed 100644
--- a/config.h.in
+++ b/config.h.in
@@ -1,5 +1,8 @@
 /* config.h.in.  Generated from configure.ac by autoheader.  */
 
+/* D0, aka DIN EN 62056-21 */
+#undef D0_SUPPORT
+
 /* Debug Mode */
 #undef DEBUG
 
diff --git a/configure.ac b/configure.ac
index 3feab4d..21ec6f5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -56,6 +56,19 @@ if test x"$sml" = x"yes"; then
     PKG_CHECK_MODULES([DEPS_SML], [sml >= 0.1])
 fi
 
+# D0 support
+AC_ARG_ENABLE(
+    [d0],
+    [AS_HELP_STRING([--enable-d0], [enable support for smart messaging language (def=yes)])],
+    [d0=$enableval],
+    [d0=yes]
+)
+
+AM_CONDITIONAL([D0_SUPPORT], [test x"$d0" = x"yes"])
+if test x"$d0" = x"yes"; then
+    AC_DEFINE([D0_SUPPORT], [], [D0, aka DIN EN 62056-21])
+fi
+
 # local interface support
 AC_ARG_ENABLE(
     [local],