libbpf-rs tests are designed to be independent of libbpf-cargo and underlying compiler versions. To that end, we check in pre-compiled bpf object files in libbpf-rs/tests/bin. To help with writing new tests, the original source code for the pre-compiled objects are placed in libbpf-rs/tests/bin/src.
To regenerate the test bpf object files run bpf_object_regen.sh script via the command: $ ./bpf_object_regen.sh
The script bpf_object_regen.sh depends on the following packages installed:
bash bpftool (optional) clang libbpf
Installation Instructions for common distributions
Ubuntu 21.10+: (should work with 20.10+ (untested), 20.04 will not work!!) required: $ apt install bash clang libbpf-dev optional: $ apt install linux-tools-generic Note: bin/src/runqslower.bpf.c requires a vmlinux.h generated from kernel 5.14+
Debian 11+: required: $ apt install bash clang libbpf-dev optional: $ apt install bpftool Note: bin/src/runqslower.bpf.c requires a vmlinux.h generated from kernel 5.14+ Note: requires running with $ PATH=$PATH:/usr/sbin/ ./bpf_object_regen.sh -b ...
Arch Linux: (tested as of 2021/12/16) required: $ pacman -S bash clang libbpf optional: $ pacman -S bpf
Fedora 35+, Centos Stream 9: (should work with Fedora 34 (untested), RHEL 9 (untested)) required: $ dnf install bash clang libbpf-devel optional: $ dnf install bpftool
Alma Linux 8.5+: (should work with Centos-Stream-8 (untested) and derivatives eg RHEL 8.5 (untested)) required: $ dnf install epel-release $ dnf --enablerepo=powertools install bash clang libbpf-devel optional: $ dnf install bpftool Note: bin/src/runqslower.bpf.c requires a vmlinux.h generated from kernel 5.14+