这是别人（http://blog.csdn.net/z609932088/article/details/52368015）写的，亲试可用

如下图

百度许久，有大神指出是我在编译源码的的时候没有将其中的某个模块编译进去，只需要重新编译摸个模块就好

在UE4 的sln文件下，会看到一个UnrealLightmass的模块，选中，鼠标邮件生成，等待编译完成就好了

如下图

再次打开UE4验证

ok，可以完美运行

下面是编译log，如果在编译源码有问题，可以看一下坐下参考

[cpp] view plain copy
  1. 1>------ 已启动生成: 项目: EnvVarsToXML, 配置: Development Any CPU ------
  2. 2>------ 已启动生成: 项目: DotNETUtilities, 配置: Development Any CPU ------
  3. 1>  EnvVarsToXML -> D:\UnrealEngine\Engine\Binaries\DotNET\EnvVarsToXML.exe
  4. 2>  DotNETUtilities -> D:\UnrealEngine\Engine\Binaries\DotNET\DotNETUtilities.dll
  5. 3>------ 已启动生成: 项目: UnrealBuildTool, 配置: Development Any CPU ------
  6. 3>  UnrealBuildTool -> D:\UnrealEngine\Engine\Binaries\DotNET\UnrealBuildTool.exe
  7. 4>------ 已启动生成: 项目: UnrealLightmass, 配置: Development_Program x64 ------
  8. 4>  Creating makefile for UnrealLightmass (no existing makefile)
  9. 4>  Performing full C++ include scan (no include cache file)
  10. 4>  Building UnrealHeaderTool...
  11. 4>  Creating makefile for UnrealHeaderTool (UnrealBuildTool.exe is newer)
  12. 4>  Target is up to date
  13. 4>  Parsing headers for UnrealLightmass
  14. 4>    Running UnrealHeaderTool UnrealLightmass "D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass.uhtmanifest" -LogCmds="loginit warning, logexit warning, logdatabase error" -Unattended -WarningsAsErrors -NoEnginePlugins
  15. 4>  Reflection code generated for UnrealLightmass in 0.4688833 seconds
  16. 4>  Performing 71 actions (4 in parallel)
  17. 4>  [4/71] Resource ModuleVersionResource.rc.inl
  18. 4>  PCH.Core.h.cpp
  19. 4>  PCH.CoreUObject.h.cpp
  20. 4>  PCH.CorePrivatePCH.h.cpp
  21. 4>  [5/71] Resource PCLaunch.rc
  22. 4>  [6/71] Resource ModuleVersionResource.rc.inl
  23. 4>  [7/71] Resource PCLaunch.rc
  24. 4>  [8/71] Resource ModuleVersionResource.rc.inl
  25. 4>  [9/71] Resource PCLaunch.rc
  26. 4>  CoreUObject.generated.cpp
  27. 4>  Module.Json.cpp
  28. 4>  Module.Core.8_of_8.cpp
  29. 4>  Module.Core.7_of_8.cpp
  30. 4>  Module.Core.6_of_8.cpp
  31. 4>  Module.Core.5_of_8.cpp
  32. 4>  Module.Core.4_of_8.cpp
  33. 4>  Module.Core.2_of_8.cpp
  34. 4>  Module.Core.1_of_8.cpp
  35. 4>  Module.Core.3_of_8.cpp
  36. 4>  Module.Projects.cpp
  37. 4>  Module.CoreUObject.5_of_5.cpp
  38. 4>  Module.CoreUObject.3_of_5.cpp
  39. 4>  [23/71] Resource ModuleVersionResource.rc.inl
  40. 4>  Module.CoreUObject.2_of_5.cpp
  41. 4>  [25/71] Link UnrealLightmass-Core.dll
  42. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Core.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Core.exp
  43. 4>  [26/71] Link UnrealLightmass-Json.dll
  44. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Json.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Json.exp
  45. 4>  [27/71] Link UnrealLightmass-Projects.dll
  46. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Projects.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Projects.exp
  47. 4>  Module.CoreUObject.1_of_5.cpp
  48. 4>  [29/71] Resource PCLaunch.rc
  49. 4>  Module.CoreUObject.4_of_5.cpp
  50. 4>  Module.SandboxFile.cpp
  51. 4>  [32/71] Resource PCLaunch.rc
  52. 4>  [33/71] Resource ModuleVersionResource.rc.inl
  53. 4>  [34/71] Link UnrealLightmass-SandboxFile.dll
  54. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-SandboxFile.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-SandboxFile.exp
  55. 4>  Module.Sockets.cpp
  56. 4>  [36/71] Resource ModuleVersionResource.rc.inl
  57. 4>  [37/71] Resource PCLaunch.rc
  58. 4>  [38/71] Link UnrealLightmass-Sockets.dll
  59. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Sockets.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Sockets.exp
  60. 4>  Module.SwarmInterface.cpp
  61. 4>  Module.Networking.cpp
  62. 4>  Serialization.generated.cpp
  63. 4>  SwarmInterface.generated.cpp
  64. 4>  Module.Serialization.cpp
  65. 4>  Module.Messaging.cpp
  66. 4>  [45/71] Resource ModuleVersionResource.rc.inl
  67. 4>  [46/71] Resource PCLaunch.rc
  68. 4>  [47/71] Resource PCLaunch.rc
  69. 4>  [48/71] Resource PCLaunch.rc
  70. 4>  [49/71] Resource PCLaunch.rc
  71. 4>  [50/71] Resource ModuleVersionResource.rc.inl
  72. 4>  [51/71] Resource ModuleVersionResource.rc.inl
  73. 4>  [52/71] Resource ModuleVersionResource.rc.inl
  74. 4>  [53/71] Link UnrealLightmass-Networking.dll
  75. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Networking.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Networking.exp
  76. 4>  Module.DerivedDataCache.cpp
  77. 4>  UdpMessaging.generated.cpp
  78. 4>  Module.UdpMessaging.cpp
  79. 4>  Module.UnrealLightmass.2_of_3.cpp
  80. 4>  Module.UnrealLightmass.3_of_3.cpp
  81. 4>  Module.UnrealLightmass.1_of_3.cpp
  82. 4>  [60/71] Resource Resource.rc
  83. 4>  [61/71] Resource ModuleVersionResource.rc.inl
  84. 4>  [62/71] Resource PCLaunch.rc
  85. 4>  [63/71] Resource PCLaunch.rc
  86. 4>  [64/71] Resource ModuleVersionResource.rc.inl
  87. 4>  [65/71] Link UnrealLightmass-DerivedDataCache.dll
  88. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-DerivedDataCache.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-DerivedDataCache.exp
  89. 4>  [66/71] Link UnrealLightmass-CoreUObject.dll
  90. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-CoreUObject.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-CoreUObject.exp
  91. 4>  [67/71] Link UnrealLightmass-Serialization.dll
  92. 4>  [68/71] Link UnrealLightmass-SwarmInterface.dll
  93. 4>  [69/71] Link UnrealLightmass-Messaging.dll
  94. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Messaging.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Messaging.exp
  95. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-SwarmInterface.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-SwarmInterface.exp
  96. 4>    正在创建库 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Serialization.lib 和对象 D:\UnrealEngine\Engine\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-Serialization.exp
  97. 4>  [70/71] Link UnrealLightmass.exe
  98. 4>  [71/71] Link UnrealLightmass-UdpMessaging.dll
  99. 4>    正在创建库 D:\UnrealEngine\Engine\Plugins\Messaging\UdpMessaging\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-UdpMessaging.lib 和对象 D:\UnrealEngine\Engine\Plugins\Messaging\UdpMessaging\Intermediate\Build\Win64\UnrealLightmass\Development\UnrealLightmass-UdpMessaging.exp
  100. 4>  Total build time: 182.27 seconds
  101. ========== 生成: 成功 4 个，失败 0 个，最新 0 个，跳过 0 个 ==========

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