run_make_support: make set_host_rpath private and move into util

src/tools/run-make-support/src/external_deps/llvm.rs

@@ -1,6 +1,7 @@
 use std::path::{Path, PathBuf};
 
-use crate::{env_var, Command};
+use crate::command::Command;
+use crate::env_checked::env_var;
 
 /// Construct a new `llvm-readobj` invocation with the `GNU` output style.
 /// This assumes that `llvm-readobj` is available at `$LLVM_BIN_DIR/llvm-readobj`.

src/tools/run-make-support/src/external_deps/rustc.rs

@@ -1,8 +1,10 @@
-use command::Command;
 use std::ffi::{OsStr, OsString};
 use std::path::Path;
 
-use crate::{command, cwd, env_var, set_host_rpath};
+use crate::command::Command;
+use crate::env_checked::env_var;
+use crate::path_helpers::cwd;
+use crate::util::set_host_rpath;
 
 /// Construct a new `rustc` invocation. This will automatically set the library
 /// search path as `-L cwd()`. Use [`bare_rustc`] to avoid this.

src/tools/run-make-support/src/external_deps/rustdoc.rs

@@ -2,7 +2,8 @@ use std::ffi::OsStr;
 use std::path::Path;
 
 use crate::command::Command;
-use crate::{env_var, env_var_os, set_host_rpath};
+use crate::env_checked::{env_var, env_var_os};
+use crate::util::set_host_rpath;
 
 /// Construct a plain `rustdoc` invocation with no flags set.
 #[track_caller]

src/tools/run-make-support/src/lib.rs

@@ -20,8 +20,6 @@ pub mod run;
 pub mod scoped_run;
 pub mod targets;
 
-use std::path::PathBuf;
-
 // Re-exports of third-party library crates.
 pub use bstr;
 pub use gimli;
@@ -84,19 +82,3 @@ pub use assertion_helpers::{
     has_prefix, has_suffix, invalid_utf8_contains, invalid_utf8_not_contains, not_contains,
     shallow_find_files,
 };
-
-use command::Command;
-
-/// Set the runtime library path as needed for running the host rustc/rustdoc/etc.
-pub fn set_host_rpath(cmd: &mut Command) {
-    let ld_lib_path_envvar = env_var("LD_LIB_PATH_ENVVAR");
-    cmd.env(&ld_lib_path_envvar, {
-        let mut paths = vec![];
-        paths.push(cwd());
-        paths.push(PathBuf::from(env_var("HOST_RPATH_DIR")));
-        for p in std::env::split_paths(&env_var(&ld_lib_path_envvar)) {
-            paths.push(p.to_path_buf());
-        }
-        std::env::join_paths(paths.iter()).unwrap()
-    });
-}

src/tools/run-make-support/src/run.rs

@@ -4,8 +4,8 @@ use std::panic;
 use std::path::{Path, PathBuf};
 
 use crate::command::{Command, CompletedProcess};
-use crate::util::handle_failed_output;
-use crate::{cwd, env_var, is_windows, set_host_rpath};
+use crate::util::{handle_failed_output, set_host_rpath};
+use crate::{cwd, env_var, is_windows};
 
 #[track_caller]
 fn run_common(name: &str, args: Option<&[&str]>) -> Command {

src/tools/run-make-support/src/util.rs

@@ -1,4 +1,8 @@
+use std::path::PathBuf;
+
 use crate::command::{Command, CompletedProcess};
+use crate::env_checked::env_var;
+use crate::path_helpers::cwd;
 
 /// If a given [`Command`] failed (as indicated by its [`CompletedProcess`]), verbose print the
 /// executed command, failure location, output status and stdout/stderr, and abort the process with
@@ -19,3 +23,17 @@ pub(crate) fn handle_failed_output(
     eprintln!("=== STDERR ===\n{}\n\n", output.stderr_utf8());
     std::process::exit(1)
 }
+
+/// Set the runtime library path as needed for running the host rustc/rustdoc/etc.
+pub(crate) fn set_host_rpath(cmd: &mut Command) {
+    let ld_lib_path_envvar = env_var("LD_LIB_PATH_ENVVAR");
+    cmd.env(&ld_lib_path_envvar, {
+        let mut paths = vec![];
+        paths.push(cwd());
+        paths.push(PathBuf::from(env_var("HOST_RPATH_DIR")));
+        for p in std::env::split_paths(&env_var(&ld_lib_path_envvar)) {
+            paths.push(p.to_path_buf());
+        }
+        std::env::join_paths(paths.iter()).unwrap()
+    });
+}