Using GNU libstc++ to have std::filesystem with Intel Compiler

[thrudprimrose]

I am trying to compile a program that uses std::filesystem with Intel 19.1.2

since I could not configure the project, I decided to use gnu std library to have std::filesystem.

I tried to compile by loading both gcc (9.3.0) and intel compiler (19.1.2) and set the linker flag with:

add_link_options("-stdlib=libstc++")

as I have read it should link with the gnu stdlib, but I still get the error that

the c++ compiler does not support std::filesystem. How can I solve this?

[ShivaniK_Intel · Accepted solution]

Hi,

Thanks for reaching out to us.

We are unable to reproduce any error with Intel 19.1.2 using the below-attached sample program that uses std::filesystem. You can refer to the screenshot attached for the desired output.

Sample code:

#include <iostream>
#include <filesystem>
namespace fs = std::filesystem;

int main()
{
    std::cout << "Current path is " << fs::current_path() << '\n';
}

Command:

icpc sample_file.cpp -lstdc++fs -std=c++17
./a.out

So, Could you please provide the reproducer code to investigate more on your issue?

>>>Since I could not configure the project, I decided to use gnu std library to have std::filesystem.

Could you please let us know the issues you are facing while using Intel 19.1.2?

>>>I still get the error that the c++ compiler does not support std::filesystem.

Could you also provide the screenshot of the error and command-line you have used to reproduce it?

Thanks & Regards

Shivani

[thrudprimrose]

-lstdc++fs

compiling with this linking flag solves the problem for me as well, so I am accepting it as an answer.

[ShivaniK_Intel]

Hi,

Thanks for accepting our solution. If you need any additional information, please post a new question as this thread will no longer be monitored by Intel.

Thanks & Regards

Shivani