From b1618ac1209c588406d87a3802a6192c3fc3e18f Mon Sep 17 00:00:00 2001
From: Kazuki Yamaguchi <k@rhe.jp>
Date: Fri, 21 Apr 2017 11:46:42 +0900
Subject: include/ruby/defines.h: assume C89-compliance

stdlib.h, stddef.h and string.h are part of C89.
---
 include/ruby/defines.h | 17 +++--------------
 1 file changed, 3 insertions(+), 14 deletions(-)

diff --git a/include/ruby/defines.h b/include/ruby/defines.h
index cf585f210d..d854f30dce 100644
--- a/include/ruby/defines.h
+++ b/include/ruby/defines.h
@@ -105,20 +105,9 @@ extern "C" {
 #ifdef HAVE_SYS_STAT_H
 # include <sys/stat.h>
 #endif
-#ifdef STDC_HEADERS
-# include <stdlib.h>
-# include <stddef.h>
-#else
-# ifdef HAVE_STDLIB_H
-#  include <stdlib.h>
-# endif
-#endif
-#ifdef HAVE_STRING_H
-# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
-#  include <memory.h>
-# endif
-# include <string.h>
-#endif
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
 #ifdef HAVE_STRINGS_H
 # include <strings.h>
 #endif
-- 
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