fatal error CL/cl.h No such file or directory

开发环境

Ubuntu 18.04.5 LTS
g++ (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
Boost 1_65_0

实例

#include <algorithm> //std::lower_bound / std::uppper_bound
#include <boost/compute/algorithm/upper_bound.hpp>
#include <boost/compute/algorithm/lower_bound.hpp>

int main() {
    int myints[] = {10,20,30,30,20,10,10,20};
    std::vector<int> v(myints,myints+8);           // 10 20 30 30 20 10 10 20

    std::sort (v.begin(), v.end());                // 10 10 10 20 20 20 30 30

    std::vector<int>::iterator low,up;
    low=std::lower_bound (v.begin(), v.end(), 20); //          ^
    up= std::upper_bound (v.begin(), v.end(), 20); //                   ^

    std::cout << "lower_bound at position " << (low- v.begin()) << '\n';
    std::cout << "upper_bound at position " << (up - v.begin()) << '\n';


    low=lower_bound (v.begin(), v.end(), 20); //          ^
    up= upper_bound (v.begin(), v.end(), 20); //                   ^


    std::cout << "boost lower_bound at position " << (low- v.begin()) << '\n';
    std::cout << "boost upper_bound at position " << (up - v.begin()) << '\n';
}

编译提示: fatal error CL/cl.h No such file or directory。

解决一下

在 #include <boost/compute/cl.hpp> 下找到这段代码¹

#if defined(__APPLE__)
#include <OpenCL/cl.h>
#else
#include <CL/cl.h>
#endif

跟 opencl 相关 ². 执行命令

sudo apt-get install opencl-headers

---

1. boost.compute . ↩

2. The Boost Compute library provides a C++ interface to multi-core CPU and GPGPU computing platforms based on OpenCL. ↩