Add note in README.

This commit is contained in:
Christian Deacon
2025-02-22 11:41:21 -05:00
parent 117ec22632
commit 060aafbaf5

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@@ -246,6 +246,25 @@ By default, client stats including packets and bytes per second are calculated p
//#define USE_FLOW_RL
```
### Error While Loading Shared Libraries
If you receive an error similar to the one below when running the program, make sure you have LibXDP globally installed onto your system via [XDP Tools](https://github.com/xdp-project/xdp-tools). You can execute `make libxdp` to install both LibXDP and LibBPF onto your system.
```bash
./xdpfw: error while loading shared libraries: libxdp.so.1: cannot open shared object file: No such file or directory
```
If you don't want to have LibXDP installed on your system after building the program, you can set the `LIBBPF_LIBXDP_STATIC` environmental variable to `1` while building the project with `make`. This will link all of the LibBPF and LibXDP object files while building the loader so you shouldn't need LibXDP installed globally.
For example:
```bash
# Build with LibBPF and LibXDP object files linked directly from modules/xdp-tools directories.
LIBBPF_LIBXDP_STATIC=1 make
# Install onto system.
sudo make install
```
## My Other XDP Projects
I just wanted to share other open source projects I've made which also utilize XDP (or AF_XDP sockets) for those interested. I hope code from these other projects help programmers trying to utilize XDP in their own projects!