| 1 | // boost/system/api_config.hpp -------------------------------------------------------// |
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| 2 | |
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| 3 | // Copyright Beman Dawes 2003, 2006, 2010 |
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| 4 | |
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| 5 | // Distributed under the Boost Software License, Version 1.0. |
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| 6 | // See http://www.boost.org/LICENSE_1_0.txt |
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| 7 | |
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| 8 | // See http://www.boost.org/libs/system for documentation. |
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| 9 | |
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| 10 | //--------------------------------------------------------------------------------------// |
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| 11 | |
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| 12 | // Boost.System calls operating system API functions to implement system error category |
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| 13 | // functions. Usually there is no question as to which API is to be used. |
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| 14 | // |
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| 15 | // In the case of MinGW or Cygwin/MinGW, however, both POSIX and Windows API's are |
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| 16 | // available. Chaos ensues if other code thinks one is in use when Boost.System was |
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| 17 | // actually built with the other. This header centralizes the API choice and prevents |
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| 18 | // user definition of API macros, thus elminating the possibility of mismatches and the |
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| 19 | // need to test configurations with little or no practical value. |
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| 20 | // |
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| 21 | |
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| 22 | //--------------------------------------------------------------------------------------// |
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| 23 | |
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| 24 | #ifndef BOOST_SYSTEM_API_CONFIG_HPP |
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| 25 | #define BOOST_SYSTEM_API_CONFIG_HPP |
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| 26 | |
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| 27 | # if defined(BOOST_POSIX_API) || defined(BOOST_WINDOWS_API) |
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| 28 | # error user defined BOOST_POSIX_API or BOOST_WINDOWS_API not supported |
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| 29 | # endif |
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| 30 | |
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| 31 | // BOOST_POSIX_API or BOOST_WINDOWS_API specify which API to use |
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| 32 | // Cygwin/MinGW does not predefine _WIN32. |
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| 33 | // Standalone MinGW and all other known Windows compilers do predefine _WIN32 |
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| 34 | // Compilers that predefine _WIN32 or __MINGW32__ do so for Windows 64-bit builds too. |
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| 35 | |
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| 36 | # if defined(_WIN32) || defined(__CYGWIN__) // Windows default, including MinGW and Cygwin |
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| 37 | # define BOOST_WINDOWS_API |
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| 38 | # else |
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| 39 | # define BOOST_POSIX_API |
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| 40 | # endif |
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| 41 | |
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| 42 | #endif // BOOST_SYSTEM_API_CONFIG_HPP |
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| 43 | |
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