build(cmake): fix cmake compiler flag initialization

Author: narknon

CMakeLists.txt

@@ -63,10 +63,9 @@ add_compile_options("$<$<NOT:$<COMPILE_LANGUAGE:ASM_MASM>>:${DEFAULT_COMPILER_FL
 add_link_options("${DEFAULT_SHARED_LINKER_FLAGS}" "${DEFAULT_EXE_LINKER_FLAGS}")
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
-# Compiler flags are now initialized by ue4ss_initialize_project()
-list(APPEND Game_FLAGS "")
-list(APPEND CasePreserving_FLAGS ${Game_FLAGS})
-list(APPEND LessEqual421_FLAGS ${Game_FLAGS})
+# Initialize Compiler flags after compiler detection.
+# Uses ue4ss_initialize_compiler_flags() from cmake/modules/Utilities.cmake
+ue4ss_initialize_compiler_flags()
 
 # Build configurations are now defined in ProjectConfig.cmake
 # Generate build configurations

cmake/modules/ProjectConfig.cmake

@@ -30,6 +30,11 @@ set(UE4SS_Game_DEFINITIONS UE_GAME)
 set(UE4SS_CasePreserving_DEFINITIONS ${UE4SS_Game_DEFINITIONS} WITH_CASE_PRESERVING_NAME)
 set(UE4SS_LessEqual421_DEFINITIONS ${UE4SS_Game_DEFINITIONS} FNAME_ALIGN8)
 
+# Target type flags (can be customized per target)
+set(UE4SS_Game_FLAGS "")
+set(UE4SS_CasePreserving_FLAGS ${UE4SS_Game_FLAGS})
+set(UE4SS_LessEqual421_FLAGS ${UE4SS_Game_FLAGS})
+
 # Configuration type definitions (UE4-style)
 set(UE4SS_Debug_DEFINITIONS UE_BUILD_DEBUG)
 set(UE4SS_Dev_DEFINITIONS UE_BUILD_DEVELOPMENT STATS)
@@ -75,9 +80,10 @@ function(ue4ss_initialize_project)
     set(CONFIGURATION_TYPES ${UE4SS_CONFIGURATION_TYPES} PARENT_SCOPE)
     set(PLATFORM_TYPES ${UE4SS_PLATFORM_TYPES} PARENT_SCOPE)
 
-    # Set up definitions for each type
+    # Set up definitions and flags for each type
     foreach(target_type ${UE4SS_TARGET_TYPES})
         set(${target_type}_DEFINITIONS ${UE4SS_${target_type}_DEFINITIONS} PARENT_SCOPE)
+        set(${target_type}_FLAGS ${UE4SS_${target_type}_FLAGS} PARENT_SCOPE)
     endforeach()
 
     foreach(config_type ${UE4SS_CONFIGURATION_TYPES})
@@ -90,9 +96,6 @@ function(ue4ss_initialize_project)
             set(${platform_type}_VARS ${UE4SS_${platform_type}_VARS} PARENT_SCOPE)
         endif()
     endforeach()
-    
-    # Initialize compiler flags
-    ue4ss_initialize_compiler_flags()
 endfunction()
 
 # Initializes compiler flags based on configuration