3 files changed, 39 insertions, 14 deletions
diff --git a/ext/extmk.rb.in b/ext/extmk.rb.in
index c97f86a687..272a508e0f 100644
--- a/ext/extmk.rb.in
+++ b/ext/extmk.rb.in
@@ -218,29 +218,31 @@ SRC
   return true
 end
 
-def have_func(func)
+def have_func(func, header=nil)
   libs = $libs
-
-  if /mswin32|mingw/ =~ RUBY_PLATFORM
-    r = try_link(<<"SRC", libs)
+  src = 
+    if /mswin32|mingw/ =~ RUBY_PLATFORM
+      r = <<"SRC"
 #include <windows.h>
 #include <winsock.h>
+SRC
+    else
+      ""
+    end
+  unless header.nil?
+  src << <<"SRC"
+#include <#{header}>
+SRC
+  end
+  r = try_link(src + <<"SRC", libs)
 int main() { return 0; }
 int t() { #{func}(); return 0; }
 SRC
-    unless r
-      r = try_link(<<"SRC", libs)
-#include <windows.h>
-#include <winsock.h>
+  unless r
+    r = try_link(src + <<"SRC", libs)
 int main() { return 0; }
 int t() { void ((*p)()); p = (void ((*)()))#{func}; return 0; }
 SRC
-    end
-  else
-    r = try_link(<<"SRC", libs)
-int main() { return 0; }
-int t() { #{func}(); return 0; }
-SRC
   end
   unless r
     return false
diff --git a/ext/md5/md5.txt b/ext/md5/md5.txt
index 0eca7c9025..e2b072401b 100644
--- a/ext/md5/md5.txt
+++ b/ext/md5/md5.txt
@@ -25,6 +25,17 @@ Methods:
 
 	returns have value of the added strings as a 16 bytes string.
 
+   hexdigest
+
+	returns have value of the added strings as an 32 bytes ASCII
+	string. This method is equal to:
+
+	def hexdigest
+	  ret = ''
+	  digest.each_byte {|i| ret << sprintf('%02x', i) }
+	  ret
+	end
+
    update(str)
 
 	Update the MD5 object with the string.  Repeated calls are
diff --git a/ext/md5/md5.txt.jp b/ext/md5/md5.txt.jp
index a1451f1175..04cf32908d 100644
--- a/ext/md5/md5.txt.jp
+++ b/ext/md5/md5.txt.jp
@@ -26,6 +26,18 @@ Methods:
         今までに追加した文字列に対するハッシュ値を16バイト長の文字列で
         返す．
 
+   hexdigest
+
+        今までに追加した文字列に対するハッシュ値を、ASCIIコードを使って
+	16進数の列を示す'fe5c2235f48d2bcc911afabea23cd5aa'のような32文字
+	の文字列にエンコードして返す。Rubyで書くと以下と同じ。
+
+	def hexdigest
+  	  ret = ''
+	  digest.each_byte {|i| ret << sprintf('%02x', i) }
+	  ret
+	end
+
    update(str)
 
         MD5オブジェクトに文字列を追加する。複数回updateを呼ぶことは文