85 lines
3.8 KiB
C
85 lines
3.8 KiB
C
/*******************************************************************************
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Copyright (c) 2005-2009 David Williams
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*******************************************************************************/
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// This file contains definitions for various macros, etc, which need to be different
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// for each platform. It helps keep per-platform logic outside the rest of PolyVox.
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#ifndef __PolyVox_PlatformDefinitions_H__
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#define __PolyVox_PlatformDefinitions_H__
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// An error message like the one below makes it much clearer to the user that they are using
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// an unsupported compiler, rather than them wondering if they are using PolyVox incorrectly.
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#if defined(_MSC_VER) && (_MSC_VER < 1800)
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#error "Your version of Visual Studio is too old to build PolyVox. You need at least version Visual Stusio 2013"
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#endif
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// Macros cannot contain #ifdefs, but some of our macros need to disable warnings and such warning supression is
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// platform specific. But macros can contain other macros, so we create macros to control the warnings and use
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// those instead. This set of warning supression macros can be extended to GCC/Clang when required.
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#if defined(_MSC_VER)
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#define POLYVOX_MSC_WARNING_PUSH __pragma(warning(push))
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#define POLYVOX_DISABLE_MSC_WARNING(x) __pragma(warning(disable:x))
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#define POLYVOX_MSC_WARNING_POP __pragma(warning(pop))
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#else
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#define POLYVOX_MSC_WARNING_PUSH
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#define POLYVOX_DISABLE_MSC_WARNING(x)
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#define POLYVOX_MSC_WARNING_POP
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#endif
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// Used to mark functions as deprecated prior to us removing them.
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#if defined _WIN32 || defined __CYGWIN__
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#define POLYVOX_DEPRECATED __declspec(deprecated)
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#else
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#define POLYVOX_DEPRECATED __attribute__((deprecated))
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#endif
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// The depreacated macro (and possibly others?) cause confusion for SWIG, so we undefine them if SWIG is running.
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#if defined SWIG
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//Do nothing in this case
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#else
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#undef POLYVOX_DEPRECATED
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#define POLYVOX_DEPRECATED //Define it to nothing to avoid warnings
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#endif
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// Halts the application is the most elegant way possible (dropping into a debugger if we can).
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#if defined(_MSC_VER)
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// In Visual Studio we can use this function to go into the debugger.
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#define POLYVOX_HALT() __debugbreak()
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#else
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// On other platforms we just halt by forcing a crash.
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// Hopefully this puts us in the debugger if one is running
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#if defined(__linux__) || defined(__APPLE__)
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#define POLYVOX_HALT() raise(SIGTRAP)
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#else
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#define POLYVOX_HALT() *((unsigned int*)0) = 0xDEAD
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#endif
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#endif
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// Used to prevent the compiler complaining about unused varuables, particularly useful when
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// e.g. asserts are disabled and the parameter it was checking isn't used anywhere else.
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// Note that this implementation doesn't seem to work everywhere, for some reason I have
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// seen it give compile errors when combined with variadic template functions (to be confirmed)?
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// Implementation from here: http://stackoverflow.com/a/4851173/2337254
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#define POLYVOX_UNUSED(x) do { (void)sizeof(x); } while(0)
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#endif //__PolyVox_PlatformDefinitions_H__
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