添加 /FS 标志来允许多个 CL.EXE 进程写入同一个 PDB 文件

(cherry picked from commit c12510cbdea34463b411858a0034c52e6ded5c5f)

windows/CMakeLists.txt

@@ -78,6 +78,14 @@ add_subdirectory("runner")
 # them to the application.
 include(flutter/generated_plugins.cmake)
 
+# 为所有插件应用 /FS 标志，解决 PDB 文件锁冲突问题
+# 这确保 flutter_inappwebview_windows 等插件能够正确编译
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  if(TARGET ${plugin}_plugin)
+    target_compile_options(${plugin}_plugin PRIVATE /FS)
+  endif()
+endforeach(plugin)
+
 
 # === Installation ===
 # Support files are copied into place next to the executable, so that it can

windows/flutter/generated_plugins.cmake

@@ -24,6 +24,10 @@ foreach(plugin ${FLUTTER_PLUGIN_LIST})
   target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
   list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
   list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+  # 为每个插件目标应用 /FS 编译选项，解决并行编译时的 PDB 锁冲突
+  if(TARGET ${plugin}_plugin)
+    target_compile_options(${plugin}_plugin PRIVATE /FS)
+  endif()
 endforeach(plugin)
 
 foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})