diff --git a/ChangeLog b/ChangeLog
index 7ce0bda252..ed17d6c7d4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Thu Nov 19 00:53:26 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* ext/extmk.rb (--extflags): new option to pass EXTLDFLAGS to children,
+	  expecially exts.mk.
+
+	* common.mk (EXTMK_ARGS): use above option.
+
 Wed Nov 18 22:50:43 2015  Koichi Sasada  <ko1@atdot.net>
 
 	* vm_method.c (rb_class_clear_method_cache): should clear all
diff --git a/common.mk b/common.mk
index 602c3f7f0f..bc56c40a2f 100644
--- a/common.mk
+++ b/common.mk
@@ -137,7 +137,8 @@ SCRIPT_ARGS   =	--dest-dir="$(DESTDIR)" \
 		--mflags="$(MFLAGS)" \
 		--make-flags="$(MAKEFLAGS)"
 EXTMK_ARGS    =	$(SCRIPT_ARGS) --extension $(EXTS) --extstatic $(EXTSTATIC) \
-		--make-flags="V=$(V) MINIRUBY='$(MINIRUBY)'" --gnumake=$(gnumake) \
+		--make-flags="V=$(V) MINIRUBY='$(MINIRUBY)'" \
+		--gnumake=$(gnumake) --extflags="$(EXTLDFLAGS)" \
 		--
 INSTRUBY      =	$(SUDO) $(RUNRUBY) -r./$(arch)-fake $(srcdir)/tool/rbinstall.rb
 INSTRUBY_ARGS =	$(SCRIPT_ARGS) \
diff --git a/ext/extmk.rb b/ext/extmk.rb
index 38b25e2a27..0f76bfcdc4 100755
--- a/ext/extmk.rb
+++ b/ext/extmk.rb
@@ -369,6 +369,9 @@ def parse_args()
     opts.on('--gnumake=yes|no', true) do |v|
       $gnumake = v
     end
+    opts.on('--extflags=FLAGS') do |v|
+      $extflags = v || ""
+    end
   end
   begin
     $optparser.parse!(ARGV)