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by ranting-moth 1134 days ago
Pardon my ignorance, is clang needed to build eBPF programs like it says in the article?
2 comments
tptacek 1134 days ago
It's a C compiler with an eBPF backend, but if you wanted to compile from a different language, or had a different C compiler with an eBPF backend (like GCC), you could do that. `libpcap` contains a surprisingly sophisticated compiler for filter expressions (to cBPF, which is JIT'd to eBPF; compiling to cBPF is in some ways more impressive given its limitations).
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unmole 1134 days ago
One could always write the eBPF assembly by hand. I ended up doing that a few years ago when clang didn't yet have eBPF support. Would not recommend.
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