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7d52913add
And fix it on FreeBSD, where _BIG_ENDIAN is not a flag indicating big endian machine, but a constant to compare _BYTE_ORDER to.
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
// SONIC ROBO BLAST 2
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//-----------------------------------------------------------------------------
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// Copyright (C) 2014 by Sonic Team Junior.
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//
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// This program is free software distributed under the
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// terms of the GNU General Public License, version 2.
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// See the 'LICENSE' file for more details.
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//-----------------------------------------------------------------------------
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/// \file endian.h
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/// \brief Endian detection
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#ifndef __ENDIAN__
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#define __ENDIAN__
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#if defined(SRB2_BIG_ENDIAN) || defined(SRB2_LITTLE_ENDIAN)
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// defined externally
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#else
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#if defined(__FreeBSD__)
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// on FreeBSD, _BIG_ENDIAN is a constant to compare
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// _BYTE_ORDER to, not a big-endianess flag
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#include <sys/endian.h>
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#if _BYTE_ORDER == _BIG_ENDIAN
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#define SRB2_BIG_ENDIAN
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#else
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#define SRB2_LITTLE_ENDIAN
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#endif
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#elif defined(__BYTE_ORDER__)
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// defined by at least gcc and clang
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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#define SRB2_BIG_ENDIAN
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#else
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#define SRB2_LITTLE_ENDIAN
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#endif
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#else
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// check used in vanilla SRB2 (may work incorrectly if
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// _BIG_ENDIAN is used as on FreeBSD)
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#if defined(_BIG_ENDIAN)
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#define SRB2_BIG_ENDIAN
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#else
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#define SRB2_LITTLE_ENDIAN
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#endif
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#endif
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#endif
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#endif //__ENDIAN__
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