--- a/src/configure.in
+++ b/src/configure.in
@@ -364,6 +364,9 @@ if test "$enable_mzschemeinterp" = "yes"
 	dnl Make Vim remember the path to the library.  For when it's not in
 	dnl $LD_LIBRARY_PATH.
         MZSCHEME_LIBS="$MZSCHEME_LIBS -Wl,-rpath -Wl,${vi_cv_path_mzscheme_pfx}/lib"
+      elif test "`(uname) 2>/dev/null`" = SunOS &&
+			       uname -r | grep '^5' >/dev/null; then
+	MZSCHEME_LIBS="$MZSCHEME_LIBS -R ${vi_cv_path_mzscheme_pfx}/lib"
       fi
     fi
     MZSCHEME_CFLAGS="-I${vi_cv_path_mzscheme_pfx}/include   \