Mac gcc非虚拟重击错误 [英] Mac gcc non-virtual thunk error

问题描述

我仅在我的应用程序的部署"构建中收到这些非虚拟重击错误.它使用一个称为Lgi的私有框架.使用XCode 3.1.4在10.5.8上构建(最新版本适用于豹吗?)错误看起来像这样:

I'm getting these non-virtual thunk errors only in the Deployment build of my app. It uses a private framework called Lgi. Building on 10.5.8 using XCode 3.1.4 (latest for leopard?) The error looks like this:

Ld /Users/matthew/Code/Scribe-Branches/v2.00/build/Development/Scribe.app/Contents/MacOS/Scribe normal i386
    cd /Users/matthew/Code/Scribe-Branches/v2.00
    /Developer/usr/bin/g++-4.0 -arch i386 -L/Users/matthew/Code/Scribe-Branches/v2.00/build/Development -F/Users/matthew/Code/Scribe-Branches/v2.00/build/Development -F/Users/matthew/Code/Lgi/build -F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development -F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development -F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Deployment -F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development -F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Deployment -filelist /Users/matthew/Code/Scribe-Branches/v2.00/build/Scribe.build/Development/Scribe.build/Objects-normal/i386/Scribe.LinkFileList -framework Carbon -framework Lgi -o /Users/matthew/Code/Scribe-Branches/v2.00/build/Development/Scribe.app/Contents/MacOS/Scribe
Undefined symbols:
  "non-virtual thunk to GWindow::OnDrop(char*, GVariant*, GdcPt2, int)", referenced from:
      vtable for ScribeWndin ScribeApp.o
      vtable for GShutdownin ScribeApp.o
      vtable for CalendarUiin Calendar.o
      vtable for CalendarViewWndin CalendarView.o
      vtable for CalendarConfigin CalendarView.o
      vtable for ScribeExportin Exp_Scribe.o
      vtable for GNewMailDlgin GNewMailDlg.o
      ....etc for lots of classes....

无论如何，我知道我不会留下那些未定义的内容，因为它确实可以链接并在开发版本中正常运行.现在，在搜索了问题之后，首先要尝试的是更改优化设置，而我没有这么做.某些链接错误.

Anyway I know I'm not leaving those undefined because it does in fact link and run fine in the development build. Now after googling the issue the first thing to try is changing the optimization setting, which I did... and no dice. Some link error.

因此这些虚拟函数最初是在GDragDropTarget中定义的，并且GWindow的继承如下所示:

So these virtual functions are initially defined in GDragDropTarget, and GWindow's inheritance looks like this:

class LgiClass GWindow : public GView
#ifndef WIN32
    , public GDragDropTarget
#endif

(LgiClass用于__declspec在Win32上的导出/导入)

(LgiClass being for __declspec export/import on win32)

关于接下来要尝试什么的任何想法?

Any ideas on what to try next?

这是该框架的一些示例标志:

Btw this is some example flags for the framework:

CompileC build/Lgi.build/Deployment/Lgi.build/Objects-normal/i386/GViewCommon.o 
/Users/matthew/Code/Lgi/src/common/Lgi/GViewCommon.cpp normal i386 c++ 
com.apple.compilers.gcc.4_0
cd /Users/matthew/Code/Lgi
/Developer/usr/bin/gcc-4.0 -x c++ -arch i386 -fmessage-length=0 -pipe -Wno-trigraphs 
-fpascal-strings -fasm-blocks -Os -Wreturn-type -Wunused-variable 
-isysroot /Developer/SDKs/MacOSX10.4u.sdk -fvisibility-inlines-hidden 
-mmacosx-version-min=10.4 
-I/Users/matthew/Code/Lgi/build/Lgi.build/Deployment/Lgi.build/Lgi.hmap 
-F/Users/matthew/Code/Lgi/build/Deployment 
-F/Developer/SDKs/MacOSX10.4u.sdk/System/Library/Frameworks -Iinclude/common 
-Iinclude/mac -Iinclude/posix -I/Users/matthew/Code/Lgi/build/Deployment/include 
-I/Users/matthew/Code/Lgi/build/Lgi.build/Deployment/Lgi.build/DerivedSources/i386 
-I/Users/matthew/Code/Lgi/build/Lgi.build/Deployment/Lgi.build/DerivedSources 
-DMAC 
-include /var/folders/b4/b4LnxwCQGLCmwy36TH3QuU+++TQ/-Caches-/com.apple.Xcode.503/SharedPrecompiledHeaders/Lgi_Prefix-aukthgaeovjxcucuoascfyqekpzz/Lgi_Prefix.pch -c /Users/matthew/Code/Lgi/src/common/Lgi/GViewCommon.cpp 
-o /Users/matthew/Code/Lgi/build/Lgi.build/Deployment/Lgi.build/Objects-normal/i386/GViewCommon.o

Ld /Users/matthew/Code/Lgi/build/Lgi.build/Deployment/Lgi.build/Objects-normal/i386/Lgi normal i386
cd /Users/matthew/Code/Lgi
setenv MACOSX_DEPLOYMENT_TARGET 10.4
/Developer/usr/bin/g++-4.0 -arch i386 -dynamiclib -isysroot /Developer/SDKs/MacOSX10.4u.sdk 
-L/Users/matthew/Code/Lgi/build/Deployment 
-F/Users/matthew/Code/Lgi/build/Deployment 
-F/Developer/SDKs/MacOSX10.4u.sdk/System/Library/Frameworks 
-filelist /Users/matthew/Code/Lgi/build/Lgi.build/Deployment/Lgi.build/Objects-normal/i386/Lgi.LinkFileList 
-install_name @executable_path/../Frameworks/Lgi.framework/Versions/A/Lgi 
-mmacosx-version-min=10.4 -framework Carbon 
-framework SystemConfiguration -Wl,-single_module -compatibility_version 1 
-current_version 1 -o /Users/matthew/Code/Lgi/build/Lgi.build/Deployment/Lgi.build/Objects-normal/i386/Lgi

这是应用程序的编译/链接标志:

And this is the compile/link flags for the application:

    CompileC build/Scribe.build/Deployment/Scribe.build/Objects-normal/ppc/IHttp.o 
/Users/matthew/Code/Lgi/src/common/INet/IHttp.cpp normal ppc c++ com.apple.compilers.gcc.4_0
cd /Users/matthew/Code/Scribe-Branches/v2.00
/Developer/usr/bin/gcc-4.0 -x c++ -arch ppc -fmessage-length=0 -pipe -Wno-trigraphs 
-fpascal-strings -Os -mdynamic-no-pic -DMAC -DSCRIBE_APP -isysroot /Developer/SDKs/MacOSX10.4u.sdk 
-mtune=G4 -fvisibility=hidden -fvisibility-inlines-hidden -mmacosx-version-min=10.4 
-I/Users/matthew/Code/Scribe-Branches/v2.00/build/Scribe.build/Deployment/Scribe.build/Scribe.hmap 
-F/Users/matthew/Code/Scribe-Branches/v2.00/build/Deployment -F/Users/matthew/Code/Lgi/build 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Deployment 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Deployment 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Deployment 
-I/Users/matthew/libpng-1.2.37 -I/Users/matthew/jpeg-6b -I../../Lgi/include/common 
-I../../Lgi/include/mac -I../../aspell-0.60.6/interfaces/cc 
-I/Users/matthew/Code/Scribe-Branches/v2.00/build/Deployment/include 
-IResources -I../Lgi/include/common -I../Lgi/include/mac 
-I/Users/matthew/Code/Scribe-Branches/v2.00/build/Scribe.build/Deployment/Scribe.build/DerivedSources/ppc 
-I/Users/matthew/Code/Scribe-Branches/v2.00/build/Scribe.build/Deployment/Scribe.build/DerivedSources 
-DMAC 
-include /var/folders/b4/b4LnxwCQGLCmwy36TH3QuU+++TQ/-Caches-/com.apple.Xcode.503/SharedPrecompiledHeaders/Scribe_Prefix-ebutivbeomfbzzguhklrzxnwuwzc/Scribe_Prefix.pch 
-c /Users/matthew/Code/Lgi/src/common/INet/IHttp.cpp 
-o /Users/matthew/Code/Scribe-Branches/v2.00/build/Scribe.build/Deployment/Scribe.build/Objects-normal/ppc/IHttp.o

Ld /Users/matthew/Code/Scribe-Branches/v2.00/build/Scribe.build/Deployment/Scribe.build/Objects-normal/i386/Scribe 
normal i386
cd /Users/matthew/Code/Scribe-Branches/v2.00
setenv MACOSX_DEPLOYMENT_TARGET 10.4
/Developer/usr/bin/g++-4.0 -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk 
-L/Users/matthew/Code/Scribe-Branches/v2.00/build/Deployment 
-F/Users/matthew/Code/Scribe-Branches/v2.00/build/Deployment 
-F/Users/matthew/Code/Lgi/build 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Deployment 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Deployment 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Development 
-F/Users/matthew/Code/Scribe-Branches/v2.00/../../Lgi/build/Deployment 
-filelist /Users/matthew/Code/Scribe-Branches/v2.00/build/Scribe.build/Deployment/Scribe.build/Objects-normal/i386/Scribe.LinkFileList 
-mmacosx-version-min=10.4 -framework Carbon -framework Lgi 
-o /Users/matthew/Code/Scribe-Branches/v2.00/build/Scribe.build/Deployment/Scribe.build/Objects-normal/i386/Scribe

Undefined symbols:
"non-virtual thunk to GWindow::OnDrop(char*, GVariant*, GdcPt2, int)", referenced from:
    vtable for ScribeWndin ScribeApp.o
    vtable for GShutdownin ScribeApp.o

我不确定有什么意义，所以我将它们全部发布了.

I'm not sure whats relevant so I posted them all.

推荐答案

我制作了一个很小的示例框架和应用程序，该框架和应用程序遵循我在主应用程序中使用的所有相同的模式/类继承关系，以期实现问题的简单示例.但这是编译和链接的.我不确定这是因为我从中剪切了太多代码，还是因为在当前版本的XCode中重新创建了项目文件已解决了该问题.

I've made a tiny example framework and app that follow all the same patterns/class heirarchies that I use in my main app, with a view towards making a simple example of the problem. But that compiled and linked. I couldn't be sure whether that was because I'd cut too much code from it, or because by recreating the project files in the current version of XCode had fixed the problem.

因此，请尝试隔离出哪种情况是对的，我从头开始创建了整个框架项目(快进几个小时)，然后以发布"(而非部署)模式进行构建，并且与我的应用程序链接时没有错误！ ??呜呜呜呜呜.

So try and isolate which of those cases was true I re-created my entire framework project from scratch (fast forward some hours) and THAT builds in "Release" (not deployment) mode and links with my app with NO ERRORS! Huh? Ooooooooooooook.

这意味着原始项目文件以某种在选项中不容易看到的方式损坏.我将所有选项与一个新创建的项目进行比较，结果是1:1.没什么明显的不同.因此，这在选项文件中不可见.我确实遇到的一个问题是没有注意到项目选项实际上与目标选项不同.现在，我知道可以同时查看这两个地方，然后可以看到一些用户定义"选项的位置.

That means that the original project file is broken in some way that isn't easily visible in the options. I diff'd all the options against a newly created project and it's pretty 1:1. Nothing obviously different. So it's something NOT visible in the options file. One problem I did have is not noticing that the project options are actually different to the target options. Now that I know to look in both places I can see where some "user defined" options are getting in the way.

旧的项目文件已经过几次操作系统升级和许多XCode升级...我想某些升级可能会冲突并弄乱项目.因此，感谢您的阅读和提出宝贵的意见.

The old project file has been through several OS upgrades and numerous XCode upgrades... I guess it's possible some of the upgrades have conflicted and messed up the project. So thanks for reading and for your comments.

更新:在获得发布"模式进行编译之后，您猜怎么着?是的，调试不会编译. ARRRRGGGGGGGHHHHH !!因此，我已经复制了框架的所有设置，以便Debug版本与Target和Project的Release版本完全相同.那没有联系.工作仍在继续...

Update: Well after getting "Release" mode to compile, guess what? Yup Debug DOESN'T compile. ARRRRGGGGGGGHHHHH!! So I've copied over all the settings for the framework so that the Debug build is exactly the same as the Release build for both Target and Project. That doesn't link. Work continues...

结果表明，应用程序的Release和Debug版本之间的最后一个区别是，我为调试版本定义了"_DEBUG".哪个会打开各种内容，例如断言和一些额外的调试API.现在，我必须找出导致链接错误的原因.

Turns out that the last difference between the Release and Debug builds of the App, is that I'm defining "_DEBUG" for the debug build. Which switches on various things like asserts and some extra debugging API's. Now I have to work out which of those is causing the link error.

这篇关于Mac gcc非虚拟重击错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！