mininet部署记录

git clone git@github.com:mininet/mininet.git

fatal: unable to access 'https://github.com/mininet/mininet/': Failed to connect to github.com port 443 after 75003 ms: Couldn't connect to server

cd mininet
git tag  # list available versions
git checkout -b mininet-2.3.0 2.3.0  # 也可以选择其他版本
cd ..

cd ~
virtualenv ~/.venv
source ~/.venv/bin/activate

cat >>~/.bashrc <<EOF
# active python3 virtualenv
source ~/.venv/bin/activate
EOF

mininet/util/install.sh -a # 完整模式，也可以选择其他模式， 可以 -h 查看选项

Installing Mininet core
~/mininet ~/mininet
cc -Wall -Wextra  \
-DVERSION=\"`PYTHONPATH=. python -B bin/mn --version 2>&1`\" mnexec.c -o mnexec
<command-line>: warning: missing terminating " character
mnexec.c: In function ‘main’:
<command-line>: error: missing terminating " character
mnexec.c:208:28: note: in expansion of macro ‘VERSION’
  208 |             printf("%s\n", VERSION);
      |                            ^~~~~~~
mnexec.c:208:35: error: expected expression before ‘)’ token
  208 |             printf("%s\n", VERSION);
      |                                   ^
make: *** [Makefile:50: mnexec] Error 1

ln -s /usr/bin/python3 /usr/bin/python

python -m pip install .
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.

    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.

    If you wish to install a non-Debian packaged Python application,
    it may be easiest to use pipx install xyz, which will manage a
    virtual environment for you. Make sure you have pipx installed.

    See /usr/share/doc/python3.11/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.
make: *** [Makefile:62: install] Error 1

diff --git a/Makefile b/Makefile
index 0fb1f84..7934575 100644
--- a/Makefile
+++ b/Makefile
@@ -59,7 +59,7 @@ install-manpages: $(MANPAGES)
 install: install-mnexec install-manpages
 #      This seems to work on all pip versions
        $(PYTHON) -m pip uninstall -y mininet || true
-       $(PYTHON) -m pip install .
+       $(PYTHON) -m pip install . --break-system-packages