[BUG] 'go.mod' not found and failed to build Polycubectl with automatic installation script

[AndreaJsy]

Describe the bug

I was unable to automatically install polycube on Ubuntu 20.04 with the recommended commands.

To Reproduce

Steps to reproduce the behavior:

1. wget https://github.com/polycube-network/polycube/releases/download/v0.9.0/polycube-v0.9.0.zip
2. unzip polycube-v0.9.0.zip
3. cd polycube-v0.9.0
4. ./scripts/install.sh

Expected behavior

Success message & successfully build Polycubectl

Please tell us about your environment:

OS details: cat /etc/*-release

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.6 LTS"
NAME="Ubuntu"
VERSION="20.04.6 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.6 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

Kernel details: uname -a

Linux U20-04 5.15.0-78-generic #85~20.04.1-Ubuntu SMP Mon Jul 17 09:42:39 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Polycube Version: polycubectl version

polycubectl: command not found

Polycube Log: Attach the log from /var/log/polycube/polycubed.log

[2023-08-03 15:50:50.727] [polycubed] [info] configuration parameters:
[2023-08-03 15:50:50.728] [polycubed] [info] loglevel: info
[2023-08-03 15:50:50.728] [polycubed] [info] daemon: false
[2023-08-03 15:50:50.728] [polycubed] [info] pidfile: /var/run/polycube.pid
[2023-08-03 15:50:50.728] [polycubed] [info] port: 9000
[2023-08-03 15:50:50.728] [polycubed] [info] addr: localhost
[2023-08-03 15:50:50.728] [polycubed] [info] logfile: /var/log/polycube/polycubed.log
[2023-08-03 15:50:50.728] [polycubed] [info] cubes-dump-file: /etc/polycube/cubes.yaml
[2023-08-03 15:50:50.728] [polycubed] [info] cubes-dump-clean-init: false
[2023-08-03 15:50:50.729] [polycubed] [info] cubes-dump-enable: false
[2023-08-03 15:50:50.729] [polycubed] [info] polycubed starting...
[2023-08-03 15:50:50.729] [polycubed] [info] version HEAD-HASH-NOTFOUND+ [git: (branch/commit): NOT_FOUND/GITDIR-N]
[2023-08-03 15:50:53.728] [polycubed] [error] cannot load ctrl_rx: Failed to load controller_module_rx: -1
[2023-08-03 15:50:53.777] [polycubed] [critical] Error starting polycube: cannot load controller_module_rx

Additional context

My llvm is not 6.0 but 9.0. The error message after I performed step 4 is this:

++ sudo ldconfig
++ [[ -z /home/vbox/go ]]

• echo 'Install polycube'
  Install polycube
• cd /home/vbox/polycube-v0.9.0/scripts/..
• '[' '' == true ']'
• '[' '' == update ']'
• mkdir -p build
• cd build
• git log -1
  fatal: not a git repository (or any of the parent directories): .git
  ++ error_message
  ++ set +x

Then I tried methods from another issue: #322 and #328 and also the installation documentation
I performed;

1. cd polycube-v0.9.0/build
2. cmake ..
3. make -j $(getconf _NPROCESSORS_ONLN)
4. sudo make install
   After step 3 I had this error message:

installing polycubectl ...

• set -e
• echo 'installing polycubectl ...'
  ++ pwd
• pwdir=/home/vbox/polycube-v0.9.0/src/polycubectl
• mkdir -p /home/vbox/go/src/github.com/polycube-network/polycube/src/
• ln -f -s /home/vbox/polycube-v0.9.0/src/polycubectl /home/vbox/go/src/github.com/polycube-network/polycube/src/
• cd /home/vbox/go/src/github.com/polycube-network/polycube/src/polycubectl
• go get ./...
  go: go.mod file not found in current directory or any parent directory.
  'go get' is no longer supported outside a module.
  To build and install a command, use 'go install' with a version,
  like 'go install example.com/cmd@latest'
  For more information, see https://golang.org/doc/go-get-install-deprecation
  or run 'go help get' or 'go help install'.

Error during installation
++ error_message
++ set +x
-- Installing: /usr/share/bash-completion/completions/polycubectl

[goldenrye]

Maybe you should try the later or latest version, I tried the latest version it works fine.