2009-04-18 18:14:48 +02:00
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/**
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* =========================================================================
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* File : os.h
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* Project : 0 A.D.
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* Description : OS-specific macros
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* =========================================================================
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*/
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// license: GPL; see lib/license.txt
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#ifndef INCLUDED_OS
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#define INCLUDED_OS
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// detect OS via predefined macros. rationale:
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// - these macros have consistent names and numerical values; using
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// them saves other code from having to know the obscure predefined macros.
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// - we'd like to use #if/#elif/#endif chains for e.g. OS_* to allow warning
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// if none is selected, but there's no good way to #define all inapplicable
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// settings to 0. doing so up front is hard to maintain and would require
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// #undef before setting any one to 1. #ifndef afterwards for each setting
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// is ugly and brittle as well. we therefore use #if/#else/#endif.
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// Windows
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#if defined(_WIN64)
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# define OS_WIN64 1
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#else
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# define OS_WIN64 0
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#endif
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#if defined(_WIN32)
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# define OS_WIN 1
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#else
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# define OS_WIN 0
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#endif
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// Linux
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#if defined(linux) || defined(__linux) || defined(__linux__)
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# define OS_LINUX 1
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#else
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# define OS_LINUX 0
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#endif
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// Mac OS X
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#if (defined(__APPLE__) && defined(__MACH__))
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# define OS_MACOSX 1
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#else
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# define OS_MACOSX 0
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#endif
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// BSD
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#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
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# define OS_BSD 1
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#else
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# define OS_BSD 0
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#endif
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// Solaris
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#if defined(sun) || defined(__sun)
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# define OS_SOLARIS 1
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#else
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# define OS_SOLARIS 0
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#endif
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// BeOS
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#if defined(__BEOS__)
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# define OS_BEOS 1
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#else
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# define OS_BEOS 0
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#endif
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// Mac OS 9 or below
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#if defined(macintosh)
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# define OS_MAC 1
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#else
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# define OS_MAC 0
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#endif
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// Amiga
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#if defined(AMIGA)
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# define OS_AMIGA 1
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#else
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# define OS_AMIGA 0
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#endif
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// Unix-based
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#if defined(unix) || defined(__unix) || defined(__unix__) || defined(_XOPEN_SOURCE) || defined(_POSIX_SOURCE)
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# define OS_UNIX 1
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#else
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# define OS_UNIX 0
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#endif
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// convenience: additionally set OS_UNIX for Unix-based OSes
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// note: doing this in an separate section instead of adding the extra define
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// to all affected OSes saves a few undefs or macro redefinition warnings.
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#if OS_LINUX || OS_MACOSX || OS_BSD || OS_SOLARIS
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# undef OS_UNIX
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# define OS_UNIX 1
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#endif
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// convenience: additionally set OS_BSD for BSD-based OSes. see note above.
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#if OS_MACOSX
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# undef OS_BSD
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# define OS_BSD 1
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#endif
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#endif // #ifndef INCLUDED_OS
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