diff --git a/config/ChangeLog b/config/ChangeLog
index 6fdf36cb691b497ae9af85f56e7121919c4569b4..8be04587356d855d60a9e7b61503803ccf80bebd 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,8 @@
+2010-09-10  Jonathan Yong  <jon_y@users.sourceforge.net>
+
+	* dfp.m4: Enable decimal float for i?86 cygwin
+	and mingw, and for x86_64 mingw.
+
 2010-09-06  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR target/45524
diff --git a/config/dfp.m4 b/config/dfp.m4
index d5dbaf59b3b3638dd0583e45195b2958f8d245a6..cc778b19bbb22eec393895566b9526691412705d 100644
--- a/config/dfp.m4
+++ b/config/dfp.m4
@@ -20,7 +20,9 @@ Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
 ],
 [
   case $1 in
-    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux*)
+    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \
+    i?86*-*-mingw* | x86_64*-*-mingw* | \
+    i?86*-*-cygwin*)
       enable_decimal_float=yes
       ;;
     *)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 211bf9468026fa868fe164d27baf5ca2759e54d2..166bda19abbe58f39e632fd52e6e9b0ba21d2a0d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2010-09-10  Kai Tietz  <kai.tietz@onevision.com>
+
+	* configure: Regenerated.
+	* config.gcc: Add for x86_64 and i?86 mingw t-dfprule.
+
 2010-09-10  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
 
         * config/arm/neon-schedgen.ml (allCores): Add support for
diff --git a/gcc/config.gcc b/gcc/config.gcc
index d33d1c6832b3adb0a38eac84e9885f6684197bce..d5f075517da3fab1f0485e34d34fe4f57f850cc7 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1442,7 +1442,7 @@ i[34567]86-*-mingw* | x86_64-*-mingw*)
 	else
 		tmake_eh_file="i386/t-sjlj-eh"
 	fi
-	tmake_file="${tmake_file} ${tmake_eh_file} i386/t-cygming"
+	tmake_file="${tmake_file} ${tmake_eh_file} i386/t-cygming i386/t-dfprules"
         case ${target} in
                x86_64-w64-*)
                		tmake_file="${tmake_file} i386/t-mingw-w64"
diff --git a/gcc/configure b/gcc/configure
index e2c22a7ca475539dc84fce9ea28d30c6a1bcac26..6aa72edcb4e8c84a4e9c83c84781c1933c1a08ac 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -6662,7 +6662,9 @@ Valid choices are 'yes', 'bid', 'dpd', and 'no'." "$LINENO" 5 ;;
 else
 
   case $target in
-    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux*)
+    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \
+    i?86*-*-mingw* | x86_64*-*-mingw* | \
+    i?86*-*-cygwin*)
       enable_decimal_float=yes
       ;;
     *)
@@ -17137,7 +17139,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 17140 "configure"
+#line 17142 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -17243,7 +17245,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 17246 "configure"
+#line 17248 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
diff --git a/libdecnumber/ChangeLog b/libdecnumber/ChangeLog
index a6d42949b8979023351f09891ffba02ab2dd62fd..0d7765ea18983c3eaaa008896a79e293b621aca1 100644
--- a/libdecnumber/ChangeLog
+++ b/libdecnumber/ChangeLog
@@ -1,3 +1,7 @@
+2010-09-10  Kai Tietz  <kai.tietz@onevision.com>
+
+       * configure: Regenerated.
+
 2010-09-08  Tristan Gingold  <gingold@adacore.com>
 
 	PR 44001
diff --git a/libdecnumber/configure b/libdecnumber/configure
index f94f68081906b1660982cee772fca5781bd5c4a0..f69dd4402b04d5ba6870b0934d3378f19d64a78f 100755
--- a/libdecnumber/configure
+++ b/libdecnumber/configure
@@ -4602,7 +4602,9 @@ Valid choices are 'yes', 'bid', 'dpd', and 'no'." "$LINENO" 5 ;;
 else
 
   case $target in
-    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux*)
+    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \
+    i?86*-*-mingw* | x86_64*-*-mingw* | \
+    i?86*-*-cygwin*)
       enable_decimal_float=yes
       ;;
     *)
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index c7eb7bff2480994b26bae798377a2da6a2e158c5..b8efaca5171deb63c715fa2034834e108a7721fd 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,7 @@
+2010-09-10  Kai Tietz  <kai.tietz@onevision.com>
+
+       * configure: Regenerated.
+
 2010-09-09  Gerald Pfeifer  <gerald@pfeifer.com>
 	    Andrew Pinski  <pinskia@gmail.com>
 
diff --git a/libgcc/configure b/libgcc/configure
index 1649e14312b015774b054d525b33054b91a7714b..2108d6fc5fe89fc7000e953216b5620683bc0741 100644
--- a/libgcc/configure
+++ b/libgcc/configure
@@ -3647,7 +3647,9 @@ Valid choices are 'yes', 'bid', 'dpd', and 'no'." "$LINENO" 5 ;;
 else
 
   case $host in
-    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux*)
+    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \
+      i?86*-*-mingw* | x86_64*-*-mingw* | \
+      i?86*-*-cygwin*)
       enable_decimal_float=yes
       ;;
     *)