diff --git a/config/ChangeLog b/config/ChangeLog
index 30314370241..e3e18593fbe 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,8 @@
+2015-06-30  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* dfp.m4 (enable_decimal_float): Also set to yes for
+	i?86*-*-elfiamcu target.
+
 2015-04-10  Jakub Jelinek  <jakub@redhat.com>
 	    Iain Sandoe  <iain@codesourcery.com>
 
diff --git a/config/dfp.m4 b/config/dfp.m4
index 48683f0f97b..5b29089cec5 100644
--- a/config/dfp.m4
+++ b/config/dfp.m4
@@ -21,7 +21,7 @@ Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
 [
   case $1 in
     powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \
-    i?86*-*-gnu* | \
+    i?86*-*-elfiamcu | i?86*-*-gnu* | \
     i?86*-*-mingw* | x86_64*-*-mingw* | \
     i?86*-*-cygwin* | x86_64*-*-cygwin*)
       enable_decimal_float=yes