darwin-cc: hide ld warnings

* tool/darwin-cc: ld in Apple's recent Xcode warns text-based stub
  files, which are probably caused by Apple's broken package.
  hide such (and architecture deprecation) warnings during
  configuration to pass TRY_LDFLAGS.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64802 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tool/darwin-cc

@@ -0,0 +1,6 @@
+#!/bin/bash
+exec 2> >(exec grep -v \
+  -e '^ld: warning: The [a-z0-9_][a-z0-9_]* architecture is deprecated for macOS' \
+  -e '^ld: warning: text-based stub file /System/Library/Frameworks/' \
+  >&2)
+exec "$@"