--- a/zlib/configure	Fri Oct 27 22:46:09 2017 +0900
+++ b/zlib/configure	Thu Oct 25 07:37:49 2018 +0900
@@ -2182,7 +2182,8 @@
 
 
 
-# Default to --enable-multilib
+if test -n "${with_target_subdir}"; then
+  # Default to --enable-multilib
 # Check whether --enable-multilib was given.
 if test "${enable_multilib+set}" = set; then :
   enableval=$enable_multilib; case "$enableval" in
@@ -2219,6 +2220,7 @@
 
 ac_config_commands="$ac_config_commands default-1"
 
+fi
 
 ac_aux_dir=
 for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
@@ -10406,7 +10408,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10409 "configure"
+#line 10411 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -10512,7 +10514,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10515 "configure"
+#line 10517 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H