diff --git a/libltdl/config/ltmain.m4sh b/libltdl/config/ltmain.m4sh
index 80a1ff3..45798fc 100644
--- a/libltdl/config/ltmain.m4sh
+++ b/libltdl/config/ltmain.m4sh
@@ -4215,6 +4215,28 @@ func_mode_link ()
 	continue
 	;;
 
+      -m32)
+	archive_cmds="$archive_cmds -m32"
+	case $host in
+	*-w64-mingw*)
+	MULTILIB_PREFIX=l32
+	;;
+	*) ;;
+	esac
+	continue
+	;;
+
+      -m64)
+	archive_cmds="$archive_cmds -m64"
+	case $host in
+	*-w64-mingw*)
+	MULTILIB_PREFIX=l64
+	;;
+	*) ;;
+	esac
+	continue
+	;;
+
       -no-undefined)
 	allow_undefined=no
 	continue
diff --git a/libltdl/m4/libtool.m4 b/libltdl/m4/libtool.m4
index 29f1222..f6bb69a 100644
--- a/libltdl/m4/libtool.m4
+++ b/libltdl/m4/libtool.m4
@@ -2084,6 +2084,7 @@ BEGIN {RS=" "; FS="/|\n";} {
 else
   sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
 fi])
+MULTILIB_PREFIX=
 library_names_spec=
 libname_spec='lib$name'
 soname_spec=
@@ -2227,6 +2228,22 @@ m4_if([$1], [],[
     mingw* | cegcc*)
       # MinGW DLLs use traditional 'lib' prefix
       soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+      case $host_vendor in
+        w64)
+        soname_spec='`echo ${libname} | sed -e 's/^lib/\${MULTILIB_PREFIX}/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+        case $host in
+        x86_64-*)
+          MULTILIB_PREFIX=l64
+        ;;
+        i?86-*)
+          MULTILIB_PREFIX=l32
+        ;;
+        esac
+        ;;
+      *)
+        soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+      ;;
+      esac
       ;;
     pw32*)
       # pw32 DLLs use 'pw' prefix rather than 'lib'
@@ -2705,6 +2722,8 @@ _LT_DECL([], [libname_spec], [1], [Format of library name prefix])
 _LT_DECL([], [library_names_spec], [1],
     [[List of archive names.  First name is the real one, the rest are links.
     The last name is the one that the linker finds with -lNAME]])
+_LT_DECL([], [MULTILIB_PREFIX], [0],
+    [MULTILIB PREFIX STRING])
 _LT_DECL([], [soname_spec], [1],
     [[The coded name of the library, if different from the real name]])
 _LT_DECL([], [install_override_mode], [1],