--- configure.orig	2017-12-14 23:36:11.000000000 +0900
+++ configure	2017-12-15 06:38:45.000000000 +0900
@@ -25691,7 +25691,7 @@
 	    libprefix="@executable_path/../${libdir_basename}"
 	    LIBRUBY_RELATIVE=yes
 	fi
-	LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-install_name '${libprefix}'/$(LIBRUBY_SO)'
+	LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-install_name '${libprefix}'/lib$(RUBY_BASE_NAME).$(MAJOR).$(MINOR).dylib'
 	LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-compatibility_version $(MAJOR).$(MINOR)'
 	LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-current_version $(RUBY_PROGRAM_VERSION)'
 	if test "$visibility_option" = ld; then