Guards pdm_translation stub copy against codegen race

qt6-after/qt6-migrated-legatus/Lts/Services/ProjectDataManagement/CMakeLists.txt

@@ -28,11 +28,18 @@ CONFIGURE_FILE(
 )
 
 # Copy pdm_translation.h to build directory
-CONFIGURE_FILE(
-  ${CMAKE_CURRENT_SOURCE_DIR}/../../../include/ProjectDataManagement/pdm_translation.h
-  ${CMAKE_CURRENT_BINARY_DIR}/pdm_translation.h
-  COPYONLY
-)
+# Only when BUILD_GRANTLEE=OFF (stub header). With BUILD_GRANTLEE=ON the
+# codegen writes the real pdm_translation.h to the same build-dir path
+# (see "Generating ... pdm_translation.h" in CODEGEN_IDL_SVC); copying the
+# stub here would overwrite the generated file on every cmake re-configure
+# and break incremental builds. Same guard pattern as pdm_enums.hpp below.
+IF(NOT BUILD_GRANTLEE)
+  CONFIGURE_FILE(
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../../include/ProjectDataManagement/pdm_translation.h
+    ${CMAKE_CURRENT_BINARY_DIR}/pdm_translation.h
+    COPYONLY
+  )
+ENDIF()
 
 # Copy pdm_enums.hpp to build directory (when BUILD_RTI=OFF)
 IF(NOT BUILD_RTI)