search winsock libraries explicitly

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62628 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/openssl/extconf.rb

@@ -40,6 +40,7 @@ result = pkg_config("openssl") && have_header("openssl/ssl.h")
 def find_openssl_library
   if $mswin || $mingw
     # required for static OpenSSL libraries
+    have_library("ws2_32")
     have_library("gdi32") # OpenSSL <= 1.0.2 (for RAND_screen())
     have_library("crypt32")
   end

ext/socket/extconf.rb

@@ -433,6 +433,7 @@ end
 case RUBY_PLATFORM
 when /mswin(32|64)|mingw/
   test_func = "WSACleanup"
+  have_library("iphlpapi")
   have_library("ws2_32", "WSACleanup", headers)
 when /cygwin/
   test_func = "socket(0,0,0)"