fix: missing symbols in rn-tester test builds

Author: artus9033

packages/react-native/scripts/cocoapods/utils.rb

@@ -661,6 +661,7 @@ def self.add_search_path_to_result(result, base_path, additional_paths, include_
 
     def self.add_ndebug_flag_to_pods_in_release(installer)
         ndebug_flag = " -DNDEBUG"
+        react_native_debug_flag = " -DREACT_NATIVE_DEBUG=0"
 
         installer.aggregate_targets.each do |aggregate_target|
             aggregate_target.xcconfigs.each do |config_name, config_file|
@@ -670,6 +671,9 @@ def self.add_ndebug_flag_to_pods_in_release(installer)
                 end
                 self.add_flag_to_map_with_inheritance(config_file.attributes, 'OTHER_CPLUSPLUSFLAGS', ndebug_flag);
                 self.add_flag_to_map_with_inheritance(config_file.attributes, 'OTHER_CFLAGS', ndebug_flag);
+                # explicitly set REACT_NATIVE_DEBUG to 0 for Release builds to ensure consistent compilation
+                self.add_flag_to_map_with_inheritance(config_file.attributes, 'OTHER_CPLUSPLUSFLAGS', react_native_debug_flag);
+                self.add_flag_to_map_with_inheritance(config_file.attributes, 'OTHER_CFLAGS', react_native_debug_flag);
 
                 xcconfig_path = aggregate_target.xcconfig_path(config_name)
                 config_file.save_as(xcconfig_path)
@@ -684,6 +688,38 @@ def self.add_ndebug_flag_to_pods_in_release(installer)
                 end
                 self.add_flag_to_map_with_inheritance(config.build_settings, 'OTHER_CPLUSPLUSFLAGS', ndebug_flag);
                 self.add_flag_to_map_with_inheritance(config.build_settings, 'OTHER_CFLAGS', ndebug_flag);
+                # explicitly set REACT_NATIVE_DEBUG to 0 for Release builds to ensure consistent compilation
+                self.add_flag_to_map_with_inheritance(config.build_settings, 'OTHER_CPLUSPLUSFLAGS', react_native_debug_flag);
+                self.add_flag_to_map_with_inheritance(config.build_settings, 'OTHER_CFLAGS', react_native_debug_flag);
+            end
+        end
+    end
+
+    def self.add_react_native_debug_flag_to_pods_in_debug(installer)
+        react_native_debug_flag = " -DREACT_NATIVE_DEBUG=1"
+
+        installer.aggregate_targets.each do |aggregate_target|
+            aggregate_target.xcconfigs.each do |config_name, config_file|
+                is_debug = aggregate_target.user_build_configurations[config_name] == :debug
+                unless is_debug
+                    next
+                end
+                self.add_flag_to_map_with_inheritance(config_file.attributes, 'OTHER_CPLUSPLUSFLAGS', react_native_debug_flag);
+                self.add_flag_to_map_with_inheritance(config_file.attributes, 'OTHER_CFLAGS', react_native_debug_flag);
+
+                xcconfig_path = aggregate_target.xcconfig_path(config_name)
+                config_file.save_as(xcconfig_path)
+            end
+        end
+
+        installer.target_installation_results.pod_target_installation_results.each do |pod_name, target_installation_result|
+            target_installation_result.native_target.build_configurations.each do |config|
+                is_debug = config.type == :debug
+                unless is_debug
+                    next
+                end
+                self.add_flag_to_map_with_inheritance(config.build_settings, 'OTHER_CPLUSPLUSFLAGS', react_native_debug_flag);
+                self.add_flag_to_map_with_inheritance(config.build_settings, 'OTHER_CFLAGS', react_native_debug_flag);
             end
         end
     end

packages/react-native/scripts/react_native_pods.rb

@@ -522,6 +522,7 @@ def react_native_post_install(
   ReactNativePodsUtils.updateOSDeploymentTarget(installer)
   ReactNativePodsUtils.set_dynamic_frameworks_flags(installer)
   ReactNativePodsUtils.add_ndebug_flag_to_pods_in_release(installer)
+  ReactNativePodsUtils.add_react_native_debug_flag_to_pods_in_debug(installer)
 
   if !ReactNativeCoreUtils.build_rncore_from_source()
     # In XCode 26 we need to revert the new setting SWIFT_ENABLE_EXPLICIT_MODULES when building

packages/rn-tester/Podfile

@@ -71,4 +71,25 @@ end
 
 post_install do |installer|
   react_native_post_install(installer, @prefix_path, :mac_catalyst_enabled => false)
+
+  installer.target_installation_results.pod_target_installation_results.each do |pod_name, target_installation_result|
+    # fix JSI symbol visibility for dynamic frameworks
+    if (pod_name.include?('React') || pod_name.include?('MyNativeView')) && ENV['USE_FRAMEWORKS'] == 'dynamic'
+        target_installation_result.native_target.build_configurations.each do |config|
+            # ensure symbols are properly exported for dynamic frameworks
+            config.build_settings['GCC_SYMBOLS_PRIVATE_EXTERN'] = 'NO'
+            config.build_settings['DEFINES_MODULE'] = 'YES'
+
+            # add JSI framework search path for release builds
+            if config.type == :release
+                framework_search_paths = config.build_settings['FRAMEWORK_SEARCH_PATHS'] || '$(inherited)'
+                if framework_search_paths.is_a?(String)
+                    config.build_settings['FRAMEWORK_SEARCH_PATHS'] = "#{framework_search_paths} \"${PODS_CONFIGURATION_BUILD_DIR}/React-jsi\""
+                elsif framework_search_paths.is_a?(Array)
+                    config.build_settings['FRAMEWORK_SEARCH_PATHS'] = framework_search_paths + ["\"${PODS_CONFIGURATION_BUILD_DIR}/React-jsi\""]
+                end
+            end
+        end
+    end
+  end
 end