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@ -1,6 +1,4 @@
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use std::env;
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use which::which;
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use xtask::AYA_BUILD_INTEGRATION_BPF;
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/// Building this crate has an undeclared dependency on the `bpf-linker` binary. This would be
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@ -25,7 +23,31 @@ fn main() {
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.unwrap_or_default();
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if build_integration_bpf {
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let bpf_linker = which("bpf-linker").unwrap();
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println!("cargo:rerun-if-changed={}", bpf_linker.to_str().unwrap());
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let out_dir = env::var_os("OUT_DIR").unwrap();
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let out_dir = std::path::PathBuf::from(out_dir);
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let bpf_linker = env::var("CARGO_BIN_FILE_BPF_LINKER").unwrap();
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// There seems to be no way to pass `-Clinker={}` to rustc from here.
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//
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// We assume rustc is going to look for `bpf-linker` on the PATH, so we can create a symlink
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// and put it on the PATH.
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let bin_dir = out_dir.join("bin");
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std::fs::create_dir_all(&bin_dir).unwrap();
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let bpf_linker_symlink = bin_dir.join("bpf-linker");
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match std::fs::remove_file(&bpf_linker_symlink) {
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Ok(()) => {}
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Err(err) => {
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if err.kind() != std::io::ErrorKind::NotFound {
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panic!("failed to remove symlink: {err}")
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}
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}
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}
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std::os::unix::fs::symlink(bpf_linker, bpf_linker_symlink).unwrap();
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let path = env::var_os("PATH");
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let path = path.as_ref();
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let paths = std::iter::once(bin_dir).chain(path.into_iter().flat_map(env::split_paths));
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let path = env::join_paths(paths).unwrap();
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println!("cargo:rustc-env=PATH={}", path.to_str().unwrap());
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}
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}
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Tamir Duberstein
2 years ago
committed by
GitHub