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Fix Flann compilation under nvcc + NEON

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All <arm_neon.h> includes in core/cv_cpu_dispatch.h are protected by an
ifndef __CUDACC__ to prevent attempting to use neon intrinsics when
compiling cuda kernels (.cu) -- this prevents hard errors such as
  error: identifier "__builtin_neon_qi" is undefined

Add this same protection to flann/dist.h to fix compilation involving
flann.hpp.
This commit is contained in:
Lindsay Roberts 2019-02-19 14:42:15 +02:00
parent aebb66682b
commit 7c72e095fa
1 changed files with 2 additions and 2 deletions
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4
modules/flann/include/opencv2/flann/dist.h
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@ -47,7 +47,7 @@ typedef unsigned __int64 uint64_t;
# include <Intrin.h>
#endif
#ifdef __ARM_NEON__
#if defined(__ARM_NEON__) && !defined(__CUDACC__)
# include "arm_neon.h"
#endif
@ -425,7 +425,7 @@ struct Hamming
ResultType operator()(Iterator1 a, Iterator2 b, size_t size, ResultType /*worst_dist*/ = -1) const
{
ResultType result = 0;
#ifdef __ARM_NEON__
#if defined(__ARM_NEON__) && !defined(__CUDACC__)
{
uint32x4_t bits = vmovq_n_u32(0);
for (size_t i = 0; i < size; i += 16) {