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stdbuf: updated 'build.rs' fixed issue #6981

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Zachary Goff-Hodges 2025-02-04 05:48:03 -08:00 • committed by Dorian Péron
parent 7d46a35e02
commit 1f2bd34ef0
1 changed files with 19 additions and 46 deletions
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65
src/uu/stdbuf/build.rs
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@ -5,6 +5,7 @@
// spell-checker:ignore (ToDO) dylib libstdbuf deps liblibstdbuf
use std::env;
use std::env::current_exe;
use std::fs;
use std::path::Path;
@ -24,53 +25,25 @@ mod platform {
}
fn main() {
let out_dir = env::var("OUT_DIR").unwrap();
let mut target_dir = Path::new(&out_dir);
let current_exe = current_exe().unwrap();
// Depending on how this is util is built, the directory structure changes.
// This seems to work for now. Here are three cases to test when changing
// this:
//
// - cargo run
// - cross run
// - cargo install --git
// - cargo publish --dry-run
//
// The goal is to find the directory in which we are installing, but that
// depends on the build method, which is annoying. Additionally the env
// var for the profile can only be "debug" or "release", not a custom
// profile name, so we have to use the name of the directory within target
// as the profile name.
//
// Adapted from https://stackoverflow.com/questions/73595435/how-to-get-profile-from-cargo-toml-in-build-rs-or-at-runtime
let profile_name = out_dir
.split(std::path::MAIN_SEPARATOR)
.nth_back(3)
.unwrap();
let out_dir_string = env::var("OUT_DIR").unwrap();
let out_dir = Path::new(&out_dir_string);
let mut name = target_dir.file_name().unwrap().to_string_lossy();
while name != "target" && !name.starts_with("cargo-install") {
target_dir = target_dir.parent().unwrap();
name = target_dir.file_name().unwrap().to_string_lossy();
}
let mut dir = target_dir.to_path_buf();
dir.push(profile_name);
dir.push("deps");
let mut path = None;
let deps_dir = current_exe.ancestors().nth(3).unwrap().join("deps");
dbg!(&deps_dir);
// When running cargo publish, cargo appends hashes to the filenames of the compiled artifacts.
// Therefore, it won't work to just get liblibstdbuf.so. Instead, we look for files with the
// glob pattern "liblibstdbuf*.so" (i.e. starts with liblibstdbuf and ends with the extension).
for entry in fs::read_dir(dir).unwrap().flatten() {
let name = entry.file_name();
let name = name.to_string_lossy();
if name.starts_with("liblibstdbuf") && name.ends_with(platform::DYLIB_EXT) {
path = Some(entry.path());
}
}
fs::copy(
path.expect("liblibstdbuf was not found"),
Path::new(&out_dir).join("libstdbuf.so"),
)
.unwrap();
let libstdbuf = deps_dir
.read_dir()
.unwrap()
.flatten()
.find(|entry| {
let n = entry.file_name();
let name = n.to_string_lossy();
name.starts_with("liblibstdbuf") && name.ends_with(platform::DYLIB_EXT)
})
.expect("unable to find libstdbuf");
fs::copy(libstdbuf.path(), out_dir.join("libstdbuf.so")).unwrap();
}