链接*.a文件出现 undefined reference to

MaaDiah

1. g++ -o OGLES2IntroducingPVRShell OGLES2IntroducingPVRShell.o PVRShellAPI.o PVR    Shell.o PVRShellOS.o -L~/workspace/Magicube/Irrlicht/Linux/libIrrlicht.a -L~/w    orkspace/Magicube/MagicubeSDK/Linux/libmcSDK.a -lEGL -lX11 -lGL

复制代码

错误：OGLES2IntroducingPVRShell.o: In function `OGLESIntroducingPVRShell::InitView()':
OGLES2IntroducingPVRShell.cpp.text+0x1a7): undefined reference to `createPVRShellApp'
collect2: ld returned 1 exit status

libmcSDK.a文件里由我想要的createPVRShellApp函数。我确定他已经编译进去了：

1. maadiah@localhost $ nm CAPIWindows.o
   
2. 00000000000009dd t _GLOBAL__I_createIrrDrawContext
   
3.                  U _Unwind_Resume
   
4. 0000000000000998 t _Z41__static_initialization_and_destruction_0ii
   
5.                  U _ZN2mx4site7CMxSiteC1EN3irr4core6stringIcNS3_12irrAllocatorIcEEEEPNS_4base12IMxConfigureEPNS8_12IMxNavEngineEPNS8_12IMxUIServiceEPNS8_14IMxFileServiceEPNS8_16IMxThreadServiceEPNS8_9IMxLoggerE
   
6.                  U _ZN2mx5stage18CMagicCubeAppStageC1EPNS_4base7IMxSiteEPNS2_12IDrawContextE
   
7.                  U _ZN2mx7context15CIrrDrawContextC1EPN3irr5video13IVideoContextEPNS3_12IVideoDriverEPNS2_6ITimerEPNS2_4font11IFontEngineE
   
8. 0000000000000ae0 r _ZN3irr3guiL16GUISkinFontNamesE
   
9. 00000000000009e0 r _ZN3irr3guiL16GUISkinIconNamesE
   
10. 0000000000000760 r _ZN3irr3guiL16GUISkinSizeNamesE
    
11. 0000000000000880 r _ZN3irr3guiL16GUISkinTextNamesE
    
12. 0000000000000460 r _ZN3irr3guiL16GUISkinTypeNamesE
    
13. 00000000000001a0 r _ZN3irr3guiL17GUIAlignmentNamesE
    
14. 0000000000000580 r _ZN3irr3guiL17GUISkinColorNamesE
    
15. 00000000000003e0 r _ZN3irr3guiL19GUIButtonStateNamesE
    
16. 00000000000002c0 r _ZN3irr3guiL19GUIElementTypeNamesE
    
17. 0000000000000ba0 r _ZN3irr3guiL20GUIOrderingModeNamesE
    
18. 0000000000000b40 r _ZN3irr3guiL22GUIColumnOrderingNamesE
    
19. 0000000000000000 W _ZN3irr4core12irrAllocatorINS0_8CMatrix4IfEEE10deallocateEPS3_
    
20. 0000000000000000 W _ZN3irr4core12irrAllocatorINS0_8CMatrix4IfEEE12internal_newEm
    
21. 0000000000000000 W _ZN3irr4core12irrAllocatorINS0_8CMatrix4IfEEE15internal_deleteEPv
    
22. 0000000000000000 W _ZN3irr4core12irrAllocatorINS0_8CMatrix4IfEEE8destructEPS3_
    
23. 0000000000000000 W _ZN3irr4core12irrAllocatorINS0_8CMatrix4IfEEEC1Ev
    
24. 0000000000000000 W _ZN3irr4core12irrAllocatorINS0_8CMatrix4IfEEED0Ev
    
25. 0000000000000000 W _ZN3irr4core12irrAllocatorINS0_8CMatrix4IfEEED1Ev
    
26. 0000000000000000 W _ZN3irr4core12irrAllocatorIcE10deallocateEPc
    
27. 0000000000000000 W _ZN3irr4core12irrAllocatorIcE12internal_newEm
    
28. 0000000000000000 W _ZN3irr4core12irrAllocatorIcE15internal_deleteEPv
    
29. 0000000000000000 W _ZN3irr4core12irrAllocatorIcE8allocateEm
    
30. 0000000000000000 W _ZN3irr4core12irrAllocatorIcEC1Ev
    
31. 0000000000000000 W _ZN3irr4core12irrAllocatorIcED0Ev
    
32. 0000000000000000 W _ZN3irr4core12irrAllocatorIcED1Ev
    
33. 0000000000000000 W _ZN3irr4core6stringIcNS0_12irrAllocatorIcEEEC1ERKS4_
    
34. 0000000000000000 W _ZN3irr4core6stringIcNS0_12irrAllocatorIcEEEC1IcEEPKT_
    
35. 0000000000000000 W _ZN3irr4core6stringIcNS0_12irrAllocatorIcEEED1Ev
    
36. 0000000000000000 W _ZN3irr4core6stringIcNS0_12irrAllocatorIcEEEaSERKS4_
    
37. 0000000000000000 W _ZN3irr4core6stringIcNS0_12irrAllocatorIcEEEaSIcEERS4_PKT_
    
38. 0000000000000000 W _ZN3irr4core8CMatrix4IfED1Ev
    
39. 0000000000001578 r _ZN3irr4coreL10DEGTORAD64E
    
40. 0000000000001580 r _ZN3irr4coreL10RADTODEG64E
    
41. 0000000000001554 r _ZN3irr4coreL13RECIPROCAL_PIE
    
42. 0000000000000000 b _ZN3irr4coreL14locale_currentE
    
43. 0000000000001568 r _ZN3irr4coreL15RECIPROCAL_PI64E
    
44. 00000000000015a0 r _ZN3irr4coreL15fast_atof_tableE
    
45. 0000000000001540 r _ZN3irr4coreL18ROUNDING_ERROR_S32E
    
46. 0000000000001544 r _ZN3irr4coreL18ROUNDING_ERROR_f32E
    
47. 0000000000001548 r _ZN3irr4coreL18ROUNDING_ERROR_f64E
    
48. 0000000000001550 r _ZN3irr4coreL2PIE
    
49. 0000000000001560 r _ZN3irr4coreL4PI64E
    
50. 0000000000001558 r _ZN3irr4coreL7HALF_PIE
    
51. 0000000000001570 r _ZN3irr4coreL8DEGTORADE
    
52. 0000000000001574 r _ZN3irr4coreL8RADTODEGE
    
53. 0000000000000010 b _ZN3irr5scene6quake3L15irrEmptyStringcE
    
54. 0000000000000f10 r _ZN3irr5sceneL16B3D_TEXTURE_PATHE
    
55. 0000000000000db0 r _ZN3irr5sceneL16CSM_TEXTURE_PATHE
    
56. 0000000000000e30 r _ZN3irr5sceneL16DMF_TEXTURE_PATHE
    
57. 0000000000000e98 r _ZN3irr5sceneL16OBJ_TEXTURE_PATHE
    
58. 0000000000000dd0 r _ZN3irr5sceneL17LMTS_TEXTURE_PATHE
    
59. 0000000000000df0 r _ZN3irr5sceneL17MY3D_TEXTURE_PATHE
    
60. 0000000000000f68 r _ZN3irr5sceneL18DEBUG_NORMAL_COLORE
    
61. 0000000000000f48 r _ZN3irr5sceneL19DEBUG_NORMAL_LENGTHE
    
62. 0000000000000c00 r _ZN3irr5sceneL21AutomaticCullingNamesE
    
63. 0000000000000e68 r _ZN3irr5sceneL21DMF_ALPHA_CHANNEL_REFE
    
64. 0000000000000c60 r _ZN3irr5sceneL22BoneAnimationModeNamesE
    
65. 0000000000000e80 r _ZN3irr5sceneL23DMF_FLIP_ALPHA_TEXTURESE
    
66. 0000000000000eb8 r _ZN3irr5sceneL24OBJ_LOADER_IGNORE_GROUPSE
    
67. 0000000000000cc0 r _ZN3irr5sceneL24ParticleEmitterTypeNamesE
    
68. 0000000000000e50 r _ZN3irr5sceneL25DMF_IGNORE_MATERIALS_DIRSE
    
69. 0000000000000d40 r _ZN3irr5sceneL25ParticleAffectorTypeNamesE
    
70. 0000000000000d98 r _ZN3irr5sceneL27ALLOW_ZWRITE_ON_TRANSPARENTE
    
71. 0000000000000f28 r _ZN3irr5sceneL27IRR_SCENE_MANAGER_IS_EDITORE
    
72. 0000000000000ef8 r _ZN3irr5sceneL29B3D_LOADER_IGNORE_MIPMAP_FLAGE
    
73. 0000000000000e18 r _ZN3irr5sceneL30COLLADA_CREATE_SCENE_INSTANCESE
    
74. 0000000000000ed8 r _ZN3irr5sceneL32OBJ_LOADER_IGNORE_MATERIAL_FILESE
    
75. 0000000000000000 W _ZN3irr5video14SMaterialLayerC1Ev
    
76. 0000000000000000 W _ZN3irr5video14SMaterialLayerD1Ev
    
77.                  U _ZN3irr5video21CPVRShellVideoContextC1EjjbNS0_13ECOLOR_FORMATEPvS3_S3_
    
78. 0000000000000000 W _ZN3irr5video6SColorC1Ejjjj
    
79. 0000000000000000 W _ZN3irr5video9SMaterialC1Ev
    
80. 0000000000000000 W _ZN3irr5video9SMaterialD1Ev
    
81. 0000000000001380 r _ZN3irr5videoL12FogTypeNamesE
    
82. 0000000000001520 r _ZN3irr5videoL14LightTypeNamesE
    
83. 00000000000012c0 r _ZN3irr5videoL18aTextureClampNamesE
    
84. 0000000000001308 r _ZN3irr5videoL21MATERIAL_MAX_TEXTURESE
    
85. 0000000000001480 r _ZN3irr5videoL23PIXEL_SHADER_TYPE_NAMESE
    
86. 0000000000001340 r _ZN3irr5videoL23sBuiltInVertexTypeNamesE
    
87. 00000000000013e0 r _ZN3irr5videoL24VERTEX_SHADER_TYPE_NAMESE
    
88. 0000000000001100 r _ZN3irr5videoL25sBuiltInMaterialTypeNamesE
    
89. 00000000000014f0 r _ZN3irr5videoL26GEOMETRY_SHADER_TYPE_NAMESE
    
90. 0000000000000000 W _ZNK3irr17IReferenceCounted4dropEv
    
91. 0000000000000000 W _ZNK3irr4core6stringIcNS0_12irrAllocatorIcEEE4sizeEv
    
92. 0000000000000000 W _ZNK3irr4core6stringIcNS0_12irrAllocatorIcEEE5c_strEv
    
93. 0000000000000000 V _ZTIN3irr4core12irrAllocatorINS0_8CMatrix4IfEEEE
    
94. 0000000000000000 V _ZTIN3irr4core12irrAllocatorIcEE
    
95. 0000000000000000 V _ZTSN3irr4core12irrAllocatorINS0_8CMatrix4IfEEEE
    
96. 0000000000000000 V _ZTSN3irr4core12irrAllocatorIcEE
    
97.                  U _ZTVN10__cxxabiv117__class_type_infoE
    
98. 0000000000000000 V _ZTVN3irr4core12irrAllocatorINS0_8CMatrix4IfEEEE
    
99. 0000000000000000 V _ZTVN3irr4core12irrAllocatorIcEE
    
100. 0000000000001600 r _ZZNK3irr17IReferenceCounted4dropEvE19__PRETTY_FUNCTION__
     
101.                  U _ZdlPv
     
102.                  U _Znwm
     
103.                  U __assert_fail
     
104.                  U __cxa_atexit
     
105.                  U __dso_handle
     
106.                  U __gxx_personality_v0
     
107. 0000000000000000 T createIrrDrawContext
     
108. 000000000000016f T createMagicCubeApp
     
109. 0000000000000091 T createMxSite
     
110. 00000000000005a8 T createPVRShellApp
     
111.                  U createStub
     
112. 00000000000001f0 T createWindowsApp

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函数源码：

1. extern "C" MAGICUBE_API IMagicCubeApp* MXCALLCONV createPVRShellApp(int screenWidth,int screenHeight)
   
2.                 {
   
3.                         //////////////////////////////////////////////////////////////////////////                       
   
4.                         irr::IIrrlichtStub*        mStub = irr::createStub();       
   
5.                         // 自定义适用于PVRShell下的VideoContext       
   
6.                         irr::video::IVideoContext* context = new irr::video::CPVRShellVideoContext(screenWidth,screenHeight);
   
7.                         video::IVideoDriver* driver = mStub->createVideoDriver(context);
   
8.                         irr::ITimer* timer = mStub->createTimer();
   
9.                         irr::font::IFontEngine* fontengine = mStub->createFontEngine();
   
10.                         fontengine->addFont((L"c:\\windows\\fonts\\simsun.ttc"),(L"simsun"),(L"simsun"),false,false);
    
11.                         fontengine->addFont((L"c:\\windows\\fonts\\simhei.ttf"),(L"simhei"),(L"simhei"),false,false);
    
12. 
    
13.                         video::SMaterial mat;// 设置材质
    
14.                         mat.BackfaceCulling = true;mat.Lighting =false;mat.Wireframe = true;
    
15.                         mat.DiffuseColor = video::SColor(255,255,255,255);        driver->setMaterial(mat);
    
16. 
    
17.                         IDrawContext* mIrrDrawContext = new mx::context::CIrrDrawContext(context,driver,timer,fontengine);
    
18.                         context->drop();         driver->drop();                timer->drop();                fontengine->drop();
    
19. 
    
20.                         // 自定义创建了一个FileService，因为创建多种FileSystem的创建需要依赖于stub
    
21.                         // 若只需要一个FileSystem，可以在外界用stub创建好后传入
    
22.                         IMxSite* mMagicubeSite = new mx::site::CMxSite("MyMagicCubeSiteDemo");
    
23. 
    
24.                         IMagicCubeApp* mMagicubeApp = createMagicCubeApp(mMagicubeSite,mIrrDrawContext);
    
25.                         mMagicubeSite->release();
    
26.                         mIrrDrawContext->release();
    
27.                         mStub->drop();
    
28.                         return mMagicubeApp;
    
29. 
    
30.                 }

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问题出在那里？

siseniao

g++ -o OGLES2IntroducingPVRShell OGLES2IntroducingPVRShell.o PVRShellAPI.o PVR    Shell.o PVRShellOS.o orkspace/Magicube/MagicubeSDK/Linux/libmcSDK.a -L~/workspace/Magicube/Irrlicht/Linux/libIrrlicht.a -L~/w     -lEGL -lX11 -lGL


这样不行吗，把a文件放在o文件一起？

MaaDiah

g++ -o OGLES2IntroducingPVRShell OGLES2IntroducingPVRShell.o PVRShellAPI.o PVR    Shell.o PVRShellOS ...
siseniao 发表于 2011-11-02 17:03

    为什么不可以？

siseniao

-L是增加lib文件的搜索路径吧，如果连接库文件还得 -l这个参数，据我的实际编译来看，静态库好像即使加了-l也是找不到的，我看别人写的make文件，都是把静态库当做o文件同样处理的，这样就不会有问题了

siseniao

g++ -o OGLES2IntroducingPVRShell OGLES2IntroducingPVRShell.o PVRShellAPI.o PVR    Shell.o PVRShellOS.o ~/workspace/Magicube/Irrlicht/Linux/libIrrlicht.a ~/w    orkspace/Magicube/MagicubeSDK/Linux/libmcSDK.a -lEGL -lX11 -lGL，修正一下

nketc

care for the link order
or use -Wl,-while-archive

MaaDiah

g++ -o OGLES2IntroducingPVRShell OGLES2IntroducingPVRShell.o PVRShellAPI.o PVR    Shell.o PVRShellOS ...
siseniao 发表于 2011-11-02 17:27

    试了室。有用。谢谢～！但是又出现了另外的 undefined reference to ，也许我的代码有问题。

PS：感觉CU上的人，平均水平要高于其他论坛。

siseniao

调整一下o文件和a文件的顺序试试看，一般连接跑不了这几个问题