/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 *    notice, this list of conditions and the following disclaimer in
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 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 5. Products derived from this software may not be called "Apache",
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 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/* 
 * Note: This is a Windows specific version of apu.h. It is renamed to
 * apu.h at the start of a Windows build.
 */

#ifdef WIN32
#ifndef APU_H
#define APU_H

/**
 * APU_DECLARE_EXPORT is defined when building the APR-UTIL dynamic library,
 * so that all public symbols are exported.
 *
 * APU_DECLARE_STATIC is defined when including the APR-UTIL public headers,
 * to provide static linkage when the dynamic library may be unavailable.
 *
 * APU_DECLARE_STATIC and APU_DECLARE_EXPORT are left undefined when
 * including the APR-UTIL public headers, to import and link the symbols from 
 * the dynamic APR-UTIL library and assure appropriate indirection and calling
 * conventions at compile time.
 */

#if !defined(WIN32)
/**
 * The public APR-UTIL functions are declared with APU_DECLARE(), so they may
 * use the most appropriate calling convention.  Public APR functions with 
 * variable arguments must use APU_DECLARE_NONSTD().
 *
 * @deffunc APU_DECLARE(rettype) apr_func(args);
 */
#define APU_DECLARE(type)            type
/**
 * The public APR-UTIL functions using variable arguments are declared with 
 * APU_DECLARE_NONSTD(), as they must use the C language calling convention.
 *
 * @deffunc APU_DECLARE_NONSTD(rettype) apr_func(args, ...);
 */
#define APU_DECLARE_NONSTD(type)     type
/**
 * The public APR-UTIL variables are declared with APU_DECLARE_DATA.
 * This assures the appropriate indirection is invoked at compile time.
 *
 * @deffunc APU_DECLARE_DATA type apr_variable;
 * @tip extern APU_DECLARE_DATA type apr_variable; syntax is required for
 * declarations within headers to properly import the variable.
 */
#define APU_DECLARE_DATA
#elif defined(APU_DECLARE_STATIC)
#define APU_DECLARE(type)            type __stdcall
#define APU_DECLARE_NONSTD(type)     type
#define APU_DECLARE_DATA
#elif defined(APU_DECLARE_EXPORT)
#define APU_DECLARE(type)            __declspec(dllexport) type __stdcall
#define APU_DECLARE_NONSTD(type)     __declspec(dllexport) type
#define APU_DECLARE_DATA             __declspec(dllexport)
#else
#define APU_DECLARE(type)            __declspec(dllimport) type __stdcall
#define APU_DECLARE_NONSTD(type)     __declspec(dllimport) type
#define APU_DECLARE_DATA             __declspec(dllimport)
#endif

#endif /* APU_H */
#endif /* WIN32 */