如何#include第三方库 [英] how to #include third party libraries

问题描述

我已建立并安装了一个名为 OhNet 的程式库。在 make install 之后，已经在 usr / local / include / ohNet 下安装了框架的相应头文件。现在我想在我的C + +项目中使用库（我使用eclipse），但是当我尝试包括一些头文件，eclipse不能找到这些文件。
至于我知道eclipse应该搜索头文件在这些目录（/ usr / include，/ usr / local / include，...）默认....我必须做什么使用图书馆？
我对C ++非常新，并且之前没有使用第三方来源。

谢谢。

- EDIT--
我只想写一个简单的helloworld程序来验证我已经包含了正确的框架。为了做到这一点，我想创建类 OpenHome :: Net :: DvDeviceStdStandard 。请参阅： ohNet C ++参考

现在我可以使用下面的头文件：
#include< ohNet / OpenHome / Net / Core / DvDevice.h> 但是如何创建一个类型 OpenHome :: Net :: DvDeviceStdStandard 的对象？现在？ Eclipse说这个类型不能被解决。 （

  #include< iostream> 
 #include< ohNet / OpenHome / Net / Core / DvDevice。 h> 
 
使用命名空间std; 
 
 int main（）{
 
 OpenHome :: Net :: DvDeviceStdStandard device; //类型无法解析
 cout<<!!! Hello World !!!<  return 0; 
} 
  pre> 
 
解决方案
 
 
 
使用 -I 编译器选项指向第三方库目录（ -I / usr / local / include / ohNet ）
 
 
使用 #include[任何你需要从oHNet] .h在您的头文件和编译单元（注意：你可能需要把相对的前缀pathes 
 
 
使用 -L 链接器选项指定第三方的路径lib 
 
 
使用 -l <​​/ code> linker选项指定您需要的任何具体的第3个库（ -l [oHNet] 可能）
 
 
在目录中查看实际安装在那里的内容，以便为 [任何你需要从oHNet] .h 和 [oHNet] ，s.th. 
 
 
 
您没有在这里明确标记[tag：Eclipse CDT]，因为 liboHNet.a 但是转到Project-> Properties-> C ++ Builder-> Settings对话框并找到C / C ++ Includes和链接器选项。
 
I have built and installed a library called OhNet. After make install the corresponding header files of the framework have been installed under usr/local/include/ohNet. Now I want to use the Library in my C++ project (i am using eclipse) but when i try to include some header files, eclipse is not able to find the files.
As far as i know eclipse should search for header files in these directories (/usr/include , /usr/local/include ,...) by default.... What do i have to do to use the library? 
I am pretty new to C++ and haven't used third party sources before.

Thank you.

--EDIT--
I simply want to write an easy "helloworld" programm to verify that i have included the framework correctly. In order to do that i want to instatiate the class OpenHome::Net::DvDeviceStdStandard. see: ohNet C++ reference

I can now include the header file using:
#include <ohNet/OpenHome/Net/Core/DvDevice.h> That works fine. But how can i create an object of type OpenHome::Net::DvDeviceStdStandard ? now? Eclipse says that this type cannot be resolved. :( 
#include <iostream>
#include <ohNet/OpenHome/Net/Core/DvDevice.h>

using namespace std;

int main() {

    OpenHome::Net::DvDeviceStdStandard device; //type cannot be resolved
    cout << "!!!Hello World!!!" << endl;
    return 0;
}

解决方案

Use the -I compiler option to point to the 3rd party libraries directory (-I/usr/local/include/ohNet)
Use #include "[whatever you need from oHNet].h" in your header files and compilation units as needed (Note: you might need to put relative prefix pathes for subdirecories in the 3rd party include paths tree here!)
Use the -L linker option to specify a path to the 3rd party libs you need (-L/usr/local/lib probably)
Use the -l linker option to specify any concrete 3rd libs you need (-l[oHNet] probably)
Look in the directories what actually was installed there to figure what to place for [whatever you need from oHNet].h and [oHNet], s.th. like liboHNet.a for the latter.

You didn't tag [tag:Eclipse CDT] explicitly here, but go to the Project->Properties->C++ Builder->Settings Dialog and look for C/C++ Includes and Linker Options.

                        
这篇关于如何#include第三方库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！