编译带有OpenCL的OpenCVForAndroid

本文参考链接http://www.cnblogs.com/hrlnw/p/4720977.html

1. 本机配置

windows7 64为
cmake 版本 3.1.0
opencv版本 3.1.0

2. 基本步骤

1) 下载opencv3.1.0 官方源码 https://github.com/Itseez/opencv/archive/3.1.0.zip
2) 下载cmake
3) 修改opencv根目录下的CMakeLists.txt，修改WITH_OPENCL

OCV_OPTION(WITH_OPENCL         "Include OpenCL Runtime support"              ON )

4) 修改opencl的文件使之支持android ： 在\modules\core\src\opencl\runtime\opencl_core.cpp文件修改为

/*M///////////////////////////////////////////////////////////////////////////////////////
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#include "../../precomp.hpp"

#if defined(HAVE_OPENCL) && !defined(HAVE_OPENCL_STATIC)

#include "opencv2/core.hpp" // CV_Error

#include "opencv2/core/opencl/runtime/opencl_core.hpp"

#define OPENCL_FUNC_TO_CHECK_1_1 "clEnqueueReadBufferRect"
#define ERROR_MSG_CANT_LOAD "Failed to load OpenCL runtime\n"
#define ERROR_MSG_INVALID_VERSION "Failed to load OpenCL runtime (expected version 1.1+)\n"

#if defined(__APPLE__)
#include <dlfcn.h>

static void* AppleCLGetProcAddress(const char* name)
{
    static bool initialized = false;
    static void* handle = NULL;
    if (!handle)
    {
        if(!initialized)
        {
            initialized = true;
            const char* path = "/System/Library/Frameworks/OpenCL.framework/Versions/Current/OpenCL";
            const char* envPath = getenv("OPENCV_OPENCL_RUNTIME");
            if (envPath)
                path = envPath;
            handle = dlopen(oclpath, RTLD_LAZY | RTLD_GLOBAL);
            if (handle == NULL)
            {
                if (envPath)
                    fprintf(stderr, ERROR_MSG_CANT_LOAD);
            }
            else if (dlsym(handle, OPENCL_FUNC_TO_