43 lines
1.8 KiB
Plaintext
43 lines
1.8 KiB
Plaintext
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// boost/system/api_config.hpp -------------------------------------------------------//
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// Copyright Beman Dawes 2003, 2006, 2010
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// Distributed under the Boost Software License, Version 1.0.
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// See http://www.boost.org/LICENSE_1_0.txt
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// See http://www.boost.org/libs/system for documentation.
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//--------------------------------------------------------------------------------------//
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// Boost.System calls operating system API functions to implement system error category
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// functions. Usually there is no question as to which API is to be used.
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//
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// In the case of MinGW or Cygwin/MinGW, however, both POSIX and Windows API's are
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// available. Chaos ensues if other code thinks one is in use when Boost.System was
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// actually built with the other. This header centralizes the API choice and prevents
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// user definition of API macros, thus elminating the possibility of mismatches and the
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// need to test configurations with little or no practical value.
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//
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//--------------------------------------------------------------------------------------//
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#ifndef BOOST_SYSTEM_API_CONFIG_HPP
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#define BOOST_SYSTEM_API_CONFIG_HPP
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# if defined(BOOST_POSIX_API) || defined(BOOST_WINDOWS_API)
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# error user defined BOOST_POSIX_API or BOOST_WINDOWS_API not supported
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# endif
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// BOOST_POSIX_API or BOOST_WINDOWS_API specify which API to use
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// Cygwin/MinGW does not predefine _WIN32.
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// Standalone MinGW and all other known Windows compilers do predefine _WIN32
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// Compilers that predefine _WIN32 or __MINGW32__ do so for Windows 64-bit builds too.
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# if defined(_WIN32) || defined(__CYGWIN__) // Windows default, including MinGW and Cygwin
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# define BOOST_WINDOWS_API
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# else
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# define BOOST_POSIX_API
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# endif
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#endif // BOOST_SYSTEM_API_CONFIG_HPP
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