diff --git a/ChangeLog b/ChangeLog
index 2398ea4280..5f2c254148 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Jan 21 23:52:39 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* configure.in: Interix(SFU) support.
+
 Wed Jan 21 23:03:45 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
 
 	* lib/drb/drb.rb: remove O_NONBLOCK, thanks \ay
diff --git a/configure.in b/configure.in
index 9315ad92c6..f1b969d7b1 100644
--- a/configure.in
+++ b/configure.in
@@ -811,13 +811,7 @@ if test "$with_dln_a_out" != yes; then
     openstep*)	CCDLFLAGS="$CCDLFLAGS -fno-common";;
     rhapsody*)	CCDLFLAGS="$CCDLFLAGS -fno-common";;
     darwin*)	CCDLFLAGS="$CCDLFLAGS -fno-common";;
-    human*)	;;
-    bsdi*)	;;
-    beos*)	;;
-    cygwin*)	;;
-    mingw*)	;;
-    aix*)	;;
-    netbsd*) CCDLFLAGS="$CCDLFLAGS -fPIC";;
+    human*|bsdi*|beos*|cygwin*|mingw*|aix*|interix*) ;;
     *) CCDLFLAGS="$CCDLFLAGS -fPIC";;
     esac
   else
@@ -859,6 +853,9 @@ if test "$with_dln_a_out" != yes; then
 			rb_cv_dlopen=yes ;;
 	linux*) 	: ${LDSHARED="$CC -shared"}
 			rb_cv_dlopen=yes ;;
+	interix*) 	: ${LDSHARED="$CC -shared"}
+			XLDFLAGS="$XLDFLAGS -Wl,-E"
+			rb_cv_dlopen=yes ;;
 	gnu*)   	: ${LDSHARED="$CC -shared"}
 			rb_cv_dlopen=yes
 			LDFLAGS="$LDFLAGS -rdynamic" ;;