00001 // Copyright (C) 2007-2012 Nikolaus Gebhardt 00002 // This file is part of the "Irrlicht Engine". 00003 // For conditions of distribution and use, see copyright notice in irrlicht.h 00004 00005 // include this file right before the data structures to be 1-aligned 00006 // and add to each structure the PACK_STRUCT define just like this: 00007 // struct mystruct 00008 // { 00009 // ... 00010 // } PACK_STRUCT; 00011 // Always include the irrunpack.h file right after the last type declared 00012 // like this, and do not put any other types with different alignment 00013 // in between! 00014 00015 // byte-align structures 00016 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined (__BCPLUSPLUS__) 00017 # pragma warning(disable: 4103) 00018 # pragma pack( push, packing ) 00019 # pragma pack( 1 ) 00020 # define PACK_STRUCT 00021 #elif defined( __DMC__ ) 00022 # pragma pack( push, 1 ) 00023 # define PACK_STRUCT 00024 #elif defined( __GNUC__ ) 00025 // Using pragma pack might work with earlier gcc versions already, but 00026 // it started to be necessary with gcc 4.7 on mingw unless compiled with -mno-ms-bitfields. 00027 // And I found some hints on the web that older gcc versions on the other hand had sometimes 00028 // trouble with pragma pack while they worked with __attribute__((packed)). 00029 # if (__GNUC__ >= 4 ) && (__GNUC_MINOR__ >= 7) 00030 # pragma pack( push, packing ) 00031 # pragma pack( 1 ) 00032 # define PACK_STRUCT 00033 # else 00034 # define PACK_STRUCT __attribute__((packed)) 00035 #endif 00036 #else 00037 # error compiler not supported 00038 #endif 00039