ci: fix build (#143)

Author: davidliu

ci/ios/Podfile

@@ -56,5 +56,18 @@ target 'ci' do
       :mac_catalyst_enabled => false
     )
     __apply_Xcode_12_5_M1_post_install_workaround(installer)
+    
+    installer.pods_project.build_configurations.each do |config|
+      installer.pods_project.targets.each do |target|
+          if target.respond_to?(:product_type) and target.product_type == "com.apple.product-type.bundle"
+              config.build_settings['CODE_SIGNING_ALLOWED'] = 'NO'
+          end
+      end
+
+      # Set the preprocessing macro for the whole Pods project
+      existing_flags = config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= ['$(inherited)']
+      existing_flags << '_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION'
+      config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] = existing_flags
+    end
   end
 end