如何使用/链接gdLibrary（libgd）与MS Visual C + +（例如2008速成版）？获取LNK2019错误 [英] How to use/link gdLibrary (libgd) with MS Visual C++ (e.g. 2008 Express Edition)? Getting LNK2019 errors

问题描述

我必须使用gdLibrary（http://www.libgd.org）在MS Windows XP教授SP3 32位的C + +应用程序 - 我试图和googleing两天，现在没有成功。有没有人使用libgd与MS VC ++ 200x EE？

I have to use the gdLibrary (http://www.libgd.org) in a C++ App on MS Windows XP Prof. SP3 32bit - and I'm trying and googleing for two days now without success. Does anyone of you use libgd with MS VC++ 200x EE?

我的问题：必须使用MS Visual C ++编译（例如2008 Express Edition - 固定的第三方条件）...但是当前链接器崩溃，其中11个 LNK2019 错误：

My problem: It has to to compile with MS Visual C++ (e.g. the 2008 Express Edition - fixed 3rd party condition)... but currently the linker crashes, with 11 of the following LNK2019 errors:

链接...
codereate.obj：error LNK2019：在public：virtual __thiscall CodeCreate ::〜CodeCreate（void）中找到未定义的外部符号_gdImageDestroy

Linking... codereate.obj : error LNK2019: An undefined external symbol "_gdImageDestroy" was found in "public: virtual __thiscall CodeCreate::~CodeCreate(void)"

其他的smybols是 _gdImageColorExact ， _gdImageCopyResized 和一些其他gd函数。看来，VC ++链接器不能正确工作与从 http://www.libgd.org下载的软件包提供的 bgd.lib /releases/gd-latest-win32.zip 。

The other smybols are _gdImageColorExact, _gdImageCopyResized and some other gd-functions. It seems that the VC++ linker does not work correctly with the bgd.lib provided by the package I downloaded from http://www.libgd.org/releases/gd-latest-win32.zip.

我所做的/尝试过的：

1. 提取 gd-latest-win32.zip 到 c：\users\johndoe\cpp\libgd 。


2. 定义 c：\users\johndoe\cpp\libgd\lib als附加库目录）


3. 定义 c：\users\johndoe\cpp\libgd\设置）


4. 定义 c：\users\johndoe\cpp\libgd\include\lib\bgd.lib 作为附加链接器\input依赖项（项目设置）


5. 我甚至添加了 #pragma comment（lib，libgd.lib）


1. Extracted gd-latest-win32.zip to c:\users\johndoe\cpp\libgd.
2. Defined c:\users\johndoe\cpp\libgd\lib als additional library dir (global VC++ setting)
3. Defined c:\users\johndoe\cpp\libgd\include as additional includes dir (global VC++ setting)
4. Defined c:\users\johndoe\cpp\libgd\include\lib\bgd.lib as additional linker\input dependency (project setting)
5. I even added #pragma comment(lib, "libgd.lib") into my codecreate.h to be on the save side.

有什么建议么？我做错了什么（例如，我忘了安装东西）？是否有任何欺骗获得VC ++ 2008兼容 bgd.lib ？

Any suggestions? What am I doing wrong (e.g. have I forget to install something)? Is there any "trick" to get a VC++ 2008 compatible bgd.lib?

1. 在Linux / g ++上运行，一切正常，没有警告 -pedantic -ansi - wAll 。


2. 对于Win32使用DevC ++ 时，它可以正常工作。因此它不是Windows的问题，只是一个VC ++问题。对于DevC ++我做了：
   
   
   
   • 我刚刚下载了 http://www.libgd.org/releases/gd-latest-win32.zip ，
   
   
   • 解压缩到 c：\users\johndoe\cpp\libgd
   
   
   • 添加了 c：\users\johndoe\cpp\libgd\lib\bgd.lib 作为链接器中的附加对象 - 项目设置。
   
   
   • 定义 c：\users\johndoe\cpp\libgd\lib
   
   
   • 定义 c：\users\johndoe\cpp\libgd\包含
     
   • 对一些条形码东西很满意
   
   

1. Running on Linux/g++, everything works fine, no warnings with -pedantic -ansi -wAll. The program does its job an generates some barcodes.
2. It works when using DevC++ for Win32. Therefore it is no Windows issue, "just" a VC++ issue. For DevC++ I did:
   • I just downloaded http://www.libgd.org/releases/gd-latest-win32.zip,
   • extracted it to c:\users\johndoe\cpp\libgd
   • added c:\users\johndoe\cpp\libgd\lib\bgd.lib as additional obbject in the linker-projects settings.
   • defined c:\users\johndoe\cpp\libgd\lib als additional library dir,
   • defined c:\users\johndoe\cpp\libgd\include as additional includes dir
   • happy about some barcode stuff

推荐答案

你的项目？如果你这样做，你应该使用bgd_a.lib。还需要确保你已经定义了WIN32

Did you put NODLL definition in your project? If you did that, you should use bgd_a.lib instead. And you also need to make sure you have defined WIN32.

我试图创建一个简单的项目与最新版本，它确实链接成功。如果我添加NODLL而不改变tot bgd_a，那么我得到相同的错误消息。

I tried to create a simple project with latest release and it does linked success. If I add NODLL without changing tot bgd_a then I get the same error message.

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