diff options
| -rw-r--r-- | src/librustc_trans/back/link.rs | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/librustc_trans/back/link.rs b/src/librustc_trans/back/link.rs index efb56ab5a6c..08266e86f97 100644 --- a/src/librustc_trans/back/link.rs +++ b/src/librustc_trans/back/link.rs @@ -107,14 +107,32 @@ pub fn build_link_meta(incremental_hashes_map: &IncrementalHashesMap) -> LinkMet pub fn get_linker(sess: &Session) -> (String, Command, Vec<(OsString, OsString)>) { let envs = vec![("PATH".into(), command_path(sess))]; + // If our linker looks like a batch script on Windows then to execute this + // we'll need to spawn `cmd` explicitly. This is primarily done to handle + // emscripten where the linker is `emcc.bat` and needs to be spawned as + // `cmd /c emcc.bat ...`. + // + // This worked historically but is needed manually since #42436 (regression + // was tagged as #42791) and some more info can be found on #44443 for + // emscripten itself. + let cmd = |linker: &str| { + if cfg!(windows) && linker.ends_with(".bat") { + let mut cmd = Command::new("cmd"); + cmd.arg("/c").arg(linker); + cmd + } else { + Command::new(linker) + } + }; + if let Some(ref linker) = sess.opts.cg.linker { - (linker.clone(), Command::new(linker), envs) + (linker.clone(), cmd(linker), envs) } else if sess.target.target.options.is_like_msvc { let (cmd, envs) = msvc_link_exe_cmd(sess); ("link.exe".to_string(), cmd, envs) } else { let linker = &sess.target.target.options.linker; - (linker.clone(), Command::new(&linker), envs) + (linker.clone(), cmd(linker), envs) } } |