947e9483e9
This slightly improves compilation time by reducing linking time (saving about a 1/10 of the the total compilation time after changing rustbuild) and slightly reduces disk usage (from 16MB for the rustc wrapper to 4MB).
28 lines
948 B
Rust
28 lines
948 B
Rust
// Various utilities for working with dylib paths.
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//
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// This file is meant to be included directly to avoid a dependency on the bootstrap library from
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// the rustc and rustdoc wrappers. This improves compilation time by reducing the linking time.
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/// Returns the environment variable which the dynamic library lookup path
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/// resides in for this platform.
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pub fn dylib_path_var() -> &'static str {
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if cfg!(target_os = "windows") {
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"PATH"
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} else if cfg!(target_os = "macos") {
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"DYLD_LIBRARY_PATH"
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} else if cfg!(target_os = "haiku") {
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"LIBRARY_PATH"
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} else {
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"LD_LIBRARY_PATH"
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}
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}
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/// Parses the `dylib_path_var()` environment variable, returning a list of
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/// paths that are members of this lookup path.
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pub fn dylib_path() -> Vec<PathBuf> {
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let var = match env::var_os(dylib_path_var()) {
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Some(v) => v,
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None => return vec![],
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};
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env::split_paths(&var).collect()
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}
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