Clone the OpenWrt repository

Oct 13, 2025 by wbrum.org 104 views

Introduction

When building packages in OpenWrt, some packages like i2c-tools and coremark may encounter issues with rewriting the build_dir cache automatically. This can lead to errors and prevent the package from being built successfully. In this article, we will explore the issue and provide a solution to resolve it.

Describe the bug

Some packages like i2c-tools and coremark cannot rewrite build_dir cache automatically. This means that the cache needs to be deleted manually to continue making in the second time.

Symptoms

When building a package, you may encounter the following symptoms:

The build process fails with an error message indicating that the file already exists.
The package cannot be built successfully, and the build process fails.

Causes

The causes of this issue are:

The build_dir cache is not being rewritten automatically.
The cache needs to be deleted manually to continue making in the second time.

Solution

To resolve this issue, you need to delete the build_dir cache manually. Here are the steps to follow:

Delete the build_dir cache: Delete the build_dir cache by running the following command:

rm -rf /home/beaver/Desktop/xwrt2/build_dir/target-aarch64_cortex-a53_musl/i2c-tools-4.3

2. **Rebuild the package**: Rebuild the package by running the following command:
   ```bash
make package/feeds/packages/i2c-tools/compile

Verify the package: Verify that the package has been built successfully by checking the build output.

OpenWrt version

The OpenWrt version used in this article is master.

OpenWrt release

The OpenWrt release used in this article is master.

OpenWrt target/subtarget

The OpenWrt target/subtarget used in this article is MT798x.

Device

The device used in this article is MT798x.

Image kind

The image kind used in this article is Self-built image.

Steps to reproduce

To reproduce this issue, follow these steps:

Clone the OpenWrt repository: Clone the OpenWrt repository using the following command:

git clone https://git.openwrt.org/openwrt/openwrt.git

2. **Change to the OpenWrt directory**: Change to the OpenWrt directory using the following command:
   ```bash
cd openwrt

Run the build command: Run the build command using the following command:

make package/feeds/packages/i2c-tools/compile

4. **Observe the error message**: Observe the error message indicating that the file already exists.

**Actual behaviour**
-------------------

The actual behaviour is that the build process fails with an error message indicating that the file already exists.

**Expected behaviour**
----------------------

The expected behaviour is that the package is built successfully without any errors.

**Additional info**
-------------------

No additional information is available.

**Diffconfig**
-------------

No diffconfig is available.

**Terms**
---------

* I am reporting an issue for OpenWrt, not an unsupported fork.<br/>
**Some packages like i2c-tools and coremark cannot rewrite build_dir cache automatically**
===========================================================

**Q&A**
------

**Q: What is the issue with some packages like i2c-tools and coremark?**
A: The issue is that these packages cannot rewrite the build_dir cache automatically, which means that the cache needs to be deleted manually to continue making in the second time.

**Q: What are the symptoms of this issue?**
A: The symptoms of this issue are that the build process fails with an error message indicating that the file already exists, and the package cannot be built successfully.

**Q: What are the causes of this issue?**
A: The causes of this issue are that the build_dir cache is not being rewritten automatically, and the cache needs to be deleted manually to continue making in the second time.

**Q: How can I resolve this issue?**
A: To resolve this issue, you need to delete the build_dir cache manually by running the following command:
   ```bash
rm -rf /home/beaver/Desktop/xwrt2/build_dir/target-aarch64_cortex-a53_musl/i2c-tools-4.3

Then, rebuild the package by running the following command:

make package/feeds/packages/i2c-tools/compile

Q: What is the OpenWrt version used in this article? A: The OpenWrt version used in this article is master.

Q: What is the OpenWrt release used in this article? A: The OpenWrt release used in this article is master.

Q: What is the OpenWrt target/subtarget used in this article? A: The OpenWrt target/subtarget used in this article is MT798x.

Q: What is the device used in this article? A: The device used in this article is MT798x.

Q: What is the image kind used in this article? A: The image kind used in this article is Self-built image.

Q: How can I reproduce this issue? A: To reproduce this issue, follow these steps:

Clone the OpenWrt repository: Clone the OpenWrt repository using the following command:

git clone https://git.openwrt.org/openwrt/openwrt.git

2. **Change to the OpenWrt directory**: Change to the OpenWrt directory using the following command:
   ```bash
cd openwrt

Run the build command: Run the build command using the following command:

make package/feeds/packages/i2c-tools/compile

4. **Observe the error message**: Observe the error message indicating that the file already exists.

**Q: What is the actual behaviour of this issue?**
A: The actual behaviour is that the build process fails with an error message indicating that the file already exists.

**Q: What is the expected behaviour of this issue?**
A: The expected behaviour is that the package is built successfully without any errors.

**Q: Is there any additional information available?**
A: No additional information is available.

**Q: Is there any diffconfig available?**
A: No diffconfig is available.

**Q: I am reporting an issue for OpenWrt, not an unsupported fork. Is this correct?**
A: Yes, this is correct.