Add `target.*.runner` configuration for targets

This commit adds a `runner` field configuration to `config.toml` for
specifying a wrapper executable when executing binaries for a target.
This is pulled out of #122036 where a WebAssembly runtime is used, for
example, to execute tests for `wasm32-wasip1`.

The name "runner" here is chosen to match Cargo's `CARGO_*_RUNNER`
configuration, and to make things a bit more consistent this
additionally renames compiletest's `--runtool` argument to `--runner`.

3 files changed, 9 insertions, 7 deletions

diff --git a/src/tools/compiletest/src/common.rs b/src/tools/compiletest/src/common.rs
index 06d8f099c33..78246136f2a 100644
--- a/src/tools/compiletest/src/common.rs
+++ b/src/tools/compiletest/src/common.rs
@@ -266,8 +266,10 @@ pub struct Config {
     pub logfile: Option<PathBuf>,
 
     /// A command line to prefix program execution with,
-    /// for running under valgrind
-    pub runtool: Option<String>,
+    /// for running under valgrind for example.
+    ///
+    /// Similar to `CARGO_*_RUNNER` configuration.
+    pub runner: Option<String>,
 
     /// Flags to pass to the compiler when building for the host
     pub host_rustcflags: Vec<String>,
diff --git a/src/tools/compiletest/src/lib.rs b/src/tools/compiletest/src/lib.rs
index b32a5a4bf1a..ef02e7fcb4a 100644
--- a/src/tools/compiletest/src/lib.rs
+++ b/src/tools/compiletest/src/lib.rs
@@ -86,7 +86,7 @@ pub fn parse_config(args: Vec<String>) -> Config {
         .optflag("", "exact", "filters match exactly")
         .optopt(
             "",
-            "runtool",
+            "runner",
             "supervisor program to run tests under \
              (eg. emulator, valgrind)",
             "PROGRAM",
@@ -256,7 +256,7 @@ pub fn parse_config(args: Vec<String>) -> Config {
             _ => panic!("unknown `--run` option `{}` given", mode),
         }),
         logfile: matches.opt_str("logfile").map(|s| PathBuf::from(&s)),
-        runtool: matches.opt_str("runtool"),
+        runner: matches.opt_str("runner"),
         host_rustcflags: matches.opt_strs("host-rustcflags"),
         target_rustcflags: matches.opt_strs("target-rustcflags"),
         optimize_tests: matches.opt_present("optimize-tests"),
@@ -341,7 +341,7 @@ pub fn log_config(config: &Config) {
         c,
         format!("force_pass_mode: {}", opt_str(&config.force_pass_mode.map(|m| format!("{}", m))),),
     );
-    logv(c, format!("runtool: {}", opt_str(&config.runtool)));
+    logv(c, format!("runner: {}", opt_str(&config.runner)));
     logv(c, format!("host-rustcflags: {:?}", config.host_rustcflags));
     logv(c, format!("target-rustcflags: {:?}", config.target_rustcflags));
     logv(c, format!("target: {}", config.target));
diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index ae0db88d873..9fd83c507ed 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -461,7 +461,7 @@ impl<'test> TestCx<'test> {
         }
 
         let mut new_config = self.config.clone();
-        new_config.runtool = new_config.valgrind_path.clone();
+        new_config.runner = new_config.valgrind_path.clone();
         let new_cx = TestCx { config: &new_config, ..*self };
         proc_res = new_cx.exec_compiled_test();
 
@@ -2647,7 +2647,7 @@ impl<'test> TestCx<'test> {
     fn make_run_args(&self) -> ProcArgs {
         // If we've got another tool to run under (valgrind),
         // then split apart its command
-        let mut args = self.split_maybe_args(&self.config.runtool);
+        let mut args = self.split_maybe_args(&self.config.runner);
 
         // If this is emscripten, then run tests under nodejs
         if self.config.target.contains("emscripten") {