The primary reason for this error is that GCC 6.0 does not support the C++17 standard, which includes the experimental::filesystem namespace. This means that when you try to use this namespace, the compiler cannot find the necessary libraries or headers.An alternative reason could be that there are

How do I fix: 🚀 How to Resolve This Issue Enabling C++17 Support?

Step 1: Update your GCC version to a supported one that includes C++17 support. For example, you can use GCC 9.0 or later.Step 2: Use the `-std=c++17` flag when compiling your code to enable C++17 support. This flag tells the compiler to use the C++17 standard instead of the default standard.Step 3:

How do I fix: Workaround using std::filesystem?

Step 1: Use the non-experimental `std::filesystem` namespace instead of `std::experimental::filesystem`. This namespace provides similar functionality but is not part of the C++17 standard.Step 2: Update your code to use the non-experimental `std::filesystem` namespace and adjust it according to the

Software⏱️ 3 min read📅 2026-06-04

How to Fix: experimental::filesystem linker error

GCC 6.0 experimental filesystem linker error

Quick Answer: The issue is due to the lack of support for C++17 features in GCC 6.0. Consider using a newer compiler version, such as GCC 9.0 or later, which supports C++17 and the experimental filesystem library.

📋 Table of Contents

⚠️ Common Causes
🚀 How to Resolve This Issue
✨ Wrapping Up

The experimental::filesystem linker error occurs when attempting to use the new C++17 features in GCC 6.0, specifically with the `std::experimental::filesystem` namespace. This issue affects developers using GCC 6.0 and those who want to utilize the latest C++ standard.

This error is frustrating because it prevents developers from taking full advantage of the new features in their code. However, there are alternative solutions that can help resolve this issue.

⚠️ Common Causes

The primary reason for this error is that GCC 6.0 does not support the C++17 standard, which includes the experimental::filesystem namespace. This means that when you try to use this namespace, the compiler cannot find the necessary libraries or headers.
An alternative reason could be that there are missing dependencies or libraries required by the `std::experimental::filesystem` namespace, leading to a linker error.

🚀 How to Resolve This Issue

Enabling C++17 Support

Step 1: Update your GCC version to a supported one that includes C++17 support. For example, you can use GCC 9.0 or later.
Step 2: Use the `-std=c++17` flag when compiling your code to enable C++17 support. This flag tells the compiler to use the C++17 standard instead of the default standard.
Step 3: Check if there are any missing dependencies or libraries required by the `std::experimental::filesystem` namespace and install them accordingly.

Workaround using std::filesystem

Step 1: Use the non-experimental `std::filesystem` namespace instead of `std::experimental::filesystem`. This namespace provides similar functionality but is not part of the C++17 standard.
Step 2: Update your code to use the non-experimental `std::filesystem` namespace and adjust it according to the available features.

✨ Wrapping Up

To resolve the experimental::filesystem linker error, you can either update your GCC version to a supported one or enable C++17 support using the `-std=c++17` flag. Alternatively, you can use the non-experimental `std::filesystem` namespace as a workaround.

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