Pynq Compilation isl: download fail

Hi all,
I am trying to create image for Pynq-Z2 board. Firstly I download the source files from git and checkout to version v2.7. To not waste time for other boards, I deleted Pynq-Z1 and ZCU104 under boards file. I followed the Pynq document to create image so firstly I run After that I just run make command. After a while I got error and it says that isl:download fail. I attached the error related part of build.log under gcc. What is the possible reasons of this error? I would be very grateful if you could help me to solve this problem. By the way, I am using Ubuntu 18.04 and my vivado version is 2020.2.

[ALL ] Connecting to isl gforge inria fr (isl gforge inria fr)||:80… failed: Connection timed out.
[ALL ] Giving up.
[ALL ]
[DEBUG] ==> Return status 4
[DEBUG] Not at this location: “
[ERROR] isl: download failed
[ERROR] >>
[ERROR] >> Build failed in step ‘Retrieving needed toolchain components’ tarballs’
[ERROR] >> called in step ‘(top-level)’
[ERROR] >>
[ERROR] >> Error happened in: CT_Abort[scripts/functions@487]
[ERROR] >> called from: CT_DoFetch[scripts/functions@2103]
[ERROR] >> called from: CT_PackageRun[scripts/functions@2063]
[ERROR] >> called from: CT_Fetch[scripts/functions@2174]
[ERROR] >> called from: do_isl_get[scripts/build/companion_libs/]
[ERROR] >> called from: do_companion_libs_get[scripts/build/]
[ERROR] >> called from: main[scripts/]

The error is here:
[DEBUG] Not at this location: “
It looks like that web server is down or no longer hosting those files. Newer versions of gcc mirror these files.
Are you modifying the image? - why are you rebuilding it?


Hi Cathal,
Thanks for your response.My gcc version is 7.5. Should I upgrade it ?.

I want to create image for custom project which will run on the Pynq-Z2 board that’s why I am trying to rebuild it.

Emrullah C.