# HG changeset patch
# User Mike Hommey <mh+mozilla@glandium.org>
# Date 1553211360 0
# Node ID f3cbeb24bd86b9bb31e20db92ee5543321cf768e
# Parent  b0a5171fb2c920ea4d4744a0409cc88636f176ba
Bug 1521734 - Print out the chosen rust host/target triplet during configure. r=chmanchester

Differential Revision: https://phabricator.services.mozilla.com/D24323

diff --git a/build/moz.configure/rust.configure b/build/moz.configure/rust.configure
--- a/build/moz.configure/rust.configure
+++ b/build/moz.configure/rust.configure
@@ -145,18 +145,21 @@ def rust_supported_targets(rustc):
 @template
 def rust_triple_alias(host_or_target):
     """Template defining the alias used for rustc's --target flag.
     `host_or_target` is either `host` or `target` (the @depends functions
     from init.configure).
     """
     assert host_or_target in {host, target}
 
+    host_or_target_str = {host: 'host', target: 'target'}[host_or_target]
+
     @depends(rustc, host_or_target, c_compiler, rust_supported_targets,
              when=rust_compiler)
+    @checking('for rust %s triplet' % host_or_target_str)
     @imports('os')
     @imports('subprocess')
     @imports(_from='mozbuild.configure.util', _import='LineIO')
     @imports(_from='mozbuild.shellutil', _import='quote')
     @imports(_from='tempfile', _import='mkstemp')
     @imports(_from='textwrap', _import='dedent')
     def rust_target(rustc, host_or_target, compiler_info,
                     rust_supported_targets):