diff --git a/ChangeLog b/ChangeLog
index 2daca14b..06546830 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+1998-12-25  Martin Baulig  <martin@home-of-linux.org>
+
+	* configure.in (LIBGTOP_INCS): Define `HAVE_LIBGTOP_SMP' if SMP
+	support was enabled.
+
 1998-12-22  Yukihiro Nakai  <Nakai@TokyoNet.AD.JP>
 
 	* configure.in (ALL_LINGUAS): Added `ja'.
diff --git a/configure.in b/configure.in
index 97556a10..6aad9414 100644
--- a/configure.in
+++ b/configure.in
@@ -260,6 +260,10 @@ if test x$build_inodedb = xyes ; then
   LIBGTOP_INCS="$LIBGTOP_INCS -DGLIBTOP_INODEDB"
 fi
 
+if test x$libgtop_smp = xyes ; then
+  LIBGTOP_INCS="$LIBGTOP_INCS -DHAVE_LIBGTOP_SMP"
+fi
+
 if test x$libgtop_have_sysinfo = xyes ; then
   LIBGTOP_INCS="$LIBGTOP_INCS -DHAVE_LIBGTOP_SYSINFO"
 fi