Flexbuild Error occurred

[GreenTree]

Hello, when I followed the operations in the document below and executed "bld -m ls1028ardb", the following error occurred. Is it because I haven't set up the https service proxy properly in my Ubuntu that the download failed? If so, do I need to purchase an https service proxy in China to be able to download? If not, could you please tell me how to solve this problem?

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root@fbdebian:~/flexbuild# bld -m ls1028ardb
Time of fetching repo: Thu Feb 12 22:35:14 PST 2026
Flexbuild HEAD commit: bc1c9ec update the repositories per gnome updates
Time of build: Thu Feb 12 22:35:14 PST 2026
[INFO] Downloading linux_lf-6.12.20-2.0.0.tar.gz

Error occurred: Download failed: HTTPSConnectionPool(host='codeload.github.com', port=443): Max retries exceeded with url: /nxp-imx/linux-imx/tar.gz/refs/tags/lf-6.12.20-2.0.0 (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7f70e247c190>: Failed to establish a new connection: [Errno 111] Connection refused'))
Downloading without md5 failed, fallback to clone
[INFO] Cloning linux (with submodules)
4^[[A^Z
[13]+ Stopped bld -m ls1028ardb

root@fbdebian:~/flexbuild# echo $http_proxy $https_proxy

root@fbdebian:~/flexbuild#

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[GreenTree]

If it is necessary to use an https proxy, can I directly download the corresponding project and place it in the corresponding directory? For example, the routine named linux_lf-6.12.20-2.0.0.tar.gz, I can directly download it outside. Could you please tell me where exactly it should be placed? Will putting it in enable the project to compile normally?

[Bio_TICFSL]

Hello,

The error indicates a network restriction, likely caused by an inability to access GitHub (codeload.github.com) from within China, resulting in a connection refusal

. This is almost certainly because a properly configured HTTP/HTTPS proxy is missing, which is confirmed by the empty output of echo $http_proxy $https_proxy. 

Solution Steps:

1. Configure Proxy: You must configure a proxy in your terminal that allows access to github.com.
   bash

   export http_proxy=http://your_proxy_address:port
   export https_proxy=http://your_proxy_address:port
   

2. Verify Connection: Ensure you can reach GitHub with curl -I https://github.com before running bld again.
3. Alternative: Instead of purchasing a commercial proxy, tools like clash or setting up a local HTTP proxy that routes through a VPN are commonly used in China to circumvent this issue.

You do not necessarily need to purchase a special "HTTPS service proxy" but you do need a working proxy server that allows traffic to pass through the restricted network. Setting it up correctly in your environment variables, as shown in step 1, should resolve the issue

Regards

[GreenTree]

Hello, I added a proxy using Clash and connected to GitHub by following the method: curl -I https://github.com. Is the output in the log considered a successful connection? I also installed Clash in the container and followed your method to connect, but I still got an error. What could be the problem?

[GreenTree · Accepted solution]

Hello, I've found a solution. Previously, I was using Ubuntu 20.04 and encountered an issue with incorrect SSL certificates during the build process. Even using AI tools to troubleshoot the problem didn't help. However, after switching to Ubuntu 22.04, I was able to successfully build，bld -m ls1028ardb. I used this tool for the clash proxy: https://sparkle.pics/

[GreenTree]

Hello, I added a proxy using Clash and connected to GitHub by following the method: curl -I https://github.com. Is the output in the log considered a successful connection? I also installed Clash in the container and followed your method to connect, but I still got an error. What could be the problem?