From d24b64e55b841d9a4c973de2872724d1614eb04f Mon Sep 17 00:00:00 2001
From: Brad Bell <bradbell@seanet.com>
Date: Thu, 16 Jun 2022 04:47:23 -0700
Subject: [PATCH] to_c: fix link_dll_lib on windows, fix some include gaurds.

---
 include/cppad/utility/create_dll_lib.hpp |  4 ++--
 include/cppad/utility/link_dll_lib.hpp   | 10 ++++++----
 test_more/general/to_csrc.cpp            |  2 +-
 3 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/include/cppad/utility/create_dll_lib.hpp b/include/cppad/utility/create_dll_lib.hpp
index a8b86a068..77584401e 100644
--- a/include/cppad/utility/create_dll_lib.hpp
+++ b/include/cppad/utility/create_dll_lib.hpp
@@ -1,5 +1,5 @@
-# ifndef CPPAD_CREATE_DLL_LIB_HPP
-# define CPPAD_CREATE_DLL_LIB_HPP
+# ifndef CPPAD_UTILITY_CREATE_DLL_LIB_HPP
+# define CPPAD_UTILITY_CREATE_DLL_LIB_HPP
 /* --------------------------------------------------------------------------
 CppAD: C++ Algorithmic Differentiation: Copyright (C) 2003-22 Bradley M. Bell
 
diff --git a/include/cppad/utility/link_dll_lib.hpp b/include/cppad/utility/link_dll_lib.hpp
index f968b9cfe..e1aae6d65 100644
--- a/include/cppad/utility/link_dll_lib.hpp
+++ b/include/cppad/utility/link_dll_lib.hpp
@@ -1,5 +1,5 @@
-# ifndef CPPAD_LINK_DLL_LIB_HPP
-# define CPPAD_LINK_DLL_LIB_HPP
+# ifndef CPPAD_UTILITY_LINK_DLL_LIB_HPP
+# define CPPAD_UTILITY_LINK_DLL_LIB_HPP
 /* --------------------------------------------------------------------------
 CppAD: C++ Algorithmic Differentiation: Copyright (C) 2003-22 Bradley M. Bell
 
@@ -31,7 +31,8 @@ in the Eclipse Public License, Version 2.0 are satisfied:
 //  dlopen, dlsym, dlerror, dlclose, RTLD_LAZY
 # include <dlfcn.h>
 # else
-//  RTLD_LAZY
+//  LoadLibrary, GetProcAddress, FreeLibrary, GetLastError, RTLD_LAZY
+# include <windows.h>
 # define RTLD_LAZY 0
 # endif
 
@@ -42,8 +43,9 @@ class link_dll_lib {
     // pointer to the dll object
     void* handle_;
     //
-    // error during constructor
+    // error message during constructor
     std::string ctor_err_msg_;
+    //
 # ifdef _WIN32
     //  dlopen
     static void* dlopen(const char *filename, int flag)
diff --git a/test_more/general/to_csrc.cpp b/test_more/general/to_csrc.cpp
index c03721c6e..e600f7050 100644
--- a/test_more/general/to_csrc.cpp
+++ b/test_more/general/to_csrc.cpp
@@ -10,8 +10,8 @@ in the Eclipse Public License, Version 2.0 are satisfied:
       GNU General Public License, Version 2.0 or later.
 ---------------------------------------------------------------------------- */
 # include <filesystem>
-# include <cppad/utility/link_dll_lib.hpp>
 # include <cppad/cppad.hpp>
+# include <cppad/utility/link_dll_lib.hpp>
 
 // CALL_CONVENTION, CALL_IMPORT
 # ifdef _MSC_VER