HASPIMA/ns3.md

Created October 2, 2025 11:58

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This a way for me to cope with the fact that installing ns3 on an Arch-based system is harder hahah

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ns3.md

Setup on Arch-based systems for ns3.45

Setup

Building ns3

Enable your virtualenv:
```
source .venv/bin/activate
```

Clean

# ./ns3 distclean # if you've built successfully before uncomment this
./ns3 clean

Configure the build target, focused on python:
- --build-profile=release --enable-asserts --enable-logs are based on the contents of setup.py
- --enable-python-bindings: This helps configure some stuff needed for python. Being more specific: Python3_LIBRARY_DIRS, Python3_INCLUDE_DIRS and Python3_EXECUTABLE.
- These settings were based on
- -G "Unix Makefiles": Force it to use make.
- NS3_PIP_PACKAGING: Leave gtk symbols undefined and pray for the linker to find the correct libraries locally.
- NS3_FETCH_OPTIONAL_COMPONENTS: Fetch Brite, Click and Openflow dependencies.
- NS3_BINDINGS_INSTALL_DIR: The python bindings won't be installed with ./ns3 install. This setting is meant for packaging and redistribution.
- GLOG_USE_GLOG_EXPORT: Glog was dying on me, so this apparently fixes it.
```
./ns3 configure --build-profile=release --enable-asserts --enable-logs --enable-examples --enable-tests --enable-python-bindings -G "Unix Makefiles" -- -DCMAKE_CXX_FLAGS="-DGLOG_USE_GLOG_EXPORT" -DNS3_PIP_PACKAGING=ON -DNS3_FETCH_OPTIONAL_COMPONENTS=ON -DNS3_BINDINGS_INSTALL_DIR=INSTALL_PREFIX
```

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