diagnostic: add build error checks.

Library/Homebrew/diagnostic.rb

@@ -93,6 +93,10 @@ module Homebrew
         %w[
         ].freeze
       end
+
+      def build_error_checks
+        (development_tools_checks + %w[
+        ]).freeze
       end
 
       def check_for_installed_developer_tools

Library/Homebrew/extend/os/mac/diagnostic.rb

@@ -22,6 +22,11 @@ module Homebrew
           check_clt_minimum_version
         ].freeze
       end
+
+      def build_error_checks
+        (development_tools_checks + %w[
+          check_for_unsupported_macos
+        ]).freeze
       end
 
       def check_for_unsupported_macos