[FIXED] Can't find include file <mmintrin.h>

[iZzz32]

Code: [Select]

#include <intrin.h>

pocc -c -Ot intrin.c
C:\Programs\PellesC7\Include\xmmintrin.h(10): fatal error #1035: Can't find include file <mmintrin.h>.

Shouldn’t it be mmintr.h?

[Bitbeisser]

Code: [Select]

#include <intrin.h>

pocc -c -Ot intrin.c
C:\Programs\PellesC7\Include\xmmintrin.h(10): fatal error #1035: Can't find include file <mmintrin.h>.

Shouldn’t it be mmintr.h?

Why?

The problem is rather that the compiler seems to strip a character from a nested #include in intrin.h:

Code: [Select]

#ifndef _INTRIN_H
#define _INTRIN_H

/* intrin.h - private header for compiler intrinsic functions */

#if __POCC__ >= 500
#pragma once
#endif

#if __POCC__ >= 700
#include <immintrin.h>
#elif __POCC__ >= 650
#include <wmmintrin.h>
#else /* __POCC__ < 650 */
#include <xmmintr.h>
#endif /* __POCC__ < 650 */
It should include immintrin.h but it somehow it seems as if it strips the leading "i" of the filename (8 character space filename bug somewhere?)...

The file "immintrin.h" exists in the include directory btw, so it must be something more subtle. Just tried to follow the chain of #includes in intrin.h and at the 8th level (in xmmintrin.h) it tries to include mmintrin.h, which does not exist.

 

Ralf

[iZzz32]

Just tried to follow the chain of #includes in intrin.h and at the 8th level (in xmmintrin.h) it tries to include mmintrin.h, which does not exist.

Yes. And there is mmintr.h, which exists, documented in manual but doesn't get included with intrin.h or its descendants:

intrin.c
  C:\Programs\PellesC7\Include\intrin.h
    C:\Programs\PellesC7\Include\immintrin.h
      C:\Programs\PellesC7\Include\wmmintrin.h
        C:\Programs\PellesC7\Include\nmmintrin.h
          C:\Programs\PellesC7\Include\smmintrin.h
            C:\Programs\PellesC7\Include\tmmintrin.h
              C:\Programs\PellesC7\Include\pmmintrin.h
                C:\Programs\PellesC7\Include\emmintrin.h
                  C:\Programs\PellesC7\Include\xmmintrin.h
C:\Programs\PellesC7\Include\xmmintrin.h(10): fatal error #1035: Can't find include file <mmintrin.h>

[Pelle]

MMX is old and unsupported. It was really the 64-bit version that introduced proper intrinsics (and header file names) at which point SSE was choosen as the minimum version to support...