$NetBSD: patch-build_moz.configure_rust.configure,v 1.2 2021/01/10 14:12:15 jperkin Exp $

* Return x86_64-unknown-illumos on SunOS to fix autoconf match.
* Do not match rumprun toolchain for NetBSD,
  narrowed should be one not two.

--- build/moz.configure/rust.configure.orig	2020-11-04 10:51:54.000000000 +0000
+++ build/moz.configure/rust.configure
@@ -257,6 +257,9 @@ def rust_triple_alias(host_or_target, ho
             elif not candidates:
                 return None
 
+            if host_or_target.kernel == 'SunOS':
+                return "x86_64-unknown-illumos"
+
             # We have multiple candidates. There are two cases where we can try to
             # narrow further down using extra information from the build system.
             # - For windows targets, correlate with the C compiler type
@@ -337,7 +340,8 @@ def rust_triple_alias(host_or_target, ho
             narrowed = [
                 c for c in candidates
                 if c.target.raw_os == host_or_target.raw_os and
-                   c.target.raw_cpu == host_or_target.raw_cpu
+                   c.target.raw_cpu == host_or_target.raw_cpu and
+                   not c.rust_target.endswith("-rumprun-netbsd")
             ]
             if len(narrowed) == 1:
                 return narrowed[0].rust_target