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[mq]: Mingw32 fix

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intrin.h is not required nor supported by mingw32.  It is present (and supported) on mingw-w64 builds, even those for 32-bit systems, but here too it's not required on 32-bit systems.  So if we're on mingw, and it's 64-bit, then and only then is the intrin.h inclusion necessary.
This commit is contained in:
Eamon Nerbonne 2010-12-03 23:24:06 +01:00
parent c49c013c47
commit 7a7ca99a31
1 changed files with 19 additions and 18 deletions
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37
Eigen/Core
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@ -93,28 +93,29 @@
#endif
// include files
#if (defined __GNUC__) && (defined __MINGW32__)
#include <intrin.h>
//including intrin.h works around a MINGW bug http://sourceforge.net/tracker/?func=detail&atid=102435&aid=2962480&group_id=2435
//in essence, intrin.h is included by windows.h and also declares intrinsics (just as emmintrin.h etc. below do). However,
//intrin.h uses an extern "C" declaration, and g++ thus complains of duplicate declarations with conflicting linkage. The linkage for intrinsics
//doesn't matter, but at that stage the compiler doesn't know; so, to avoid compile errors when windows.h is included after Eigen/Core,
//include intrin here.
#endif
#include <emmintrin.h>
#include <xmmintrin.h>
#ifdef EIGEN_VECTORIZE_SSE3
// This extern "C" works around a MINGW-w64 bug
// https://sourceforge.net/tracker/index.php?func=detail&aid=3018394&group_id=202880&atid=983354
// In essence, intrin.h is included by windows.h and also declares intrinsics (just as emmintrin.h etc. below do).
// However, intrin.h uses an extern "C" declaration, and g++ thus complains of duplicate declarations
// with conflicting linkage. The linkage for intrinsics doesn't matter, but at that stage the compiler doesn't know;
// so, to avoid compile errors when windows.h is included after Eigen/Core, ensure intrinsics are extern "C" here too.
extern "C" {
#include <emmintrin.h>
#include <xmmintrin.h>
#ifdef EIGEN_VECTORIZE_SSE3
#include <pmmintrin.h>
#endif
#ifdef EIGEN_VECTORIZE_SSSE3
#endif
#ifdef EIGEN_VECTORIZE_SSSE3
#include <tmmintrin.h>
#endif
#ifdef EIGEN_VECTORIZE_SSE4_1
#endif
#ifdef EIGEN_VECTORIZE_SSE4_1
#include <smmintrin.h>
#endif
#ifdef EIGEN_VECTORIZE_SSE4_2
#endif
#ifdef EIGEN_VECTORIZE_SSE4_2
#include <nmmintrin.h>
#endif
#endif
} // end extern "C"
#elif defined __ALTIVEC__
#define EIGEN_VECTORIZE
#define EIGEN_VECTORIZE_ALTIVEC