/usr/include/gdal/cpl_cpu_features.h is in libgdal-dev 2.2.3+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* Project: CPL - Common Portability Library
* Purpose: Prototypes, and definitions for of CPU features detection
* Author: Even Rouault, <even dot rouault at spatialys dot com>
*
******************************************************************************
* Copyright (c) 2016, Even Rouault <even dot rouault at spatialys dot com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#ifndef CPL_CPU_FEATURES_H
#define CPL_CPU_FEATURES_H
#include "cpl_port.h"
#include "cpl_string.h"
//! @cond Doxygen_Suppress
#ifdef HAVE_SSE_AT_COMPILE_TIME
#if (defined(_M_X64) || defined(__x86_64))
#define HAVE_INLINE_SSE
static bool inline CPLHaveRuntimeSSE() { return true; }
#else
bool CPLHaveRuntimeSSE();
#endif
#endif
#ifdef HAVE_SSSE3_AT_COMPILE_TIME
#if __SSSE3__
#define HAVE_INLINE_SSSE3
static bool inline CPLHaveRuntimeSSSE3()
{
#ifdef DEBUG
if( !CPLTestBool(CPLGetConfigOption("GDAL_USE_SSSE3", "YES")) )
return false;
#endif
return true;
}
#else
bool CPLHaveRuntimeSSSE3();
#endif
#endif
#ifdef HAVE_AVX_AT_COMPILE_TIME
#if __AVX__
#define HAVE_INLINE_AVX
static bool inline CPLHaveRuntimeAVX() { return true; }
#else
bool CPLHaveRuntimeAVX();
#endif
#endif
//! @endcond
#endif // CPL_CPU_FEATURES_H
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