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 setup_host.sh. 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)|18.104.22.168|:80… failed: Connection timed out.
[ALL ] Giving up.
[DEBUG] ==> Return status 4
[DEBUG] Not at this location: “http://isl.gforge.inria.fr/isl-0.20.tar.gz”
[ERROR] isl: download failed
[ERROR] >> Build failed in step ‘Retrieving needed toolchain components’ tarballs’
[ERROR] >> called in step ‘(top-level)’
[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/121-isl.sh@16]
[ERROR] >> called from: do_companion_libs_get[scripts/build/companion_libs.sh@15]
[ERROR] >> called from: main[scripts/crosstool-NG.sh@648]