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如何在 ubuntu 上添加 c++ 库

[英]How to add a c++ library on ubuntu

原文 2021-05-10 22:01:26 5 1 c++/ path/ shared-libraries/ ubuntu-20.04/ .so

I have downloaded a repository from github with a library with git clone then I typed in terminal "make" now I have a libmylibrary++.so file in folder mylibrary/src我已经从 github 下载了一个存储库，其中包含一个带有 git 克隆的库，然后我输入了终端“make”，现在我在文件夹 mylibrary/src 中有一个 libmylibrary++.so 文件

Now I want to run a c++ file which uses the library but I can't compile it because of this error: "mylibrary.hpp: No such file or directory"现在我想运行一个使用该库的 c++ 文件，但由于此错误而无法编译它：“mylibrary.hpp：没有这样的文件或目录”

How to add it to PATH?如何将其添加到 PATH？ yet I don't understand what exactly I need to add Whether it is folder "/home/mylibrary" or folder with the.so file但我不明白我到底需要添加什么无论是文件夹“/home/mylibrary”还是带有.so文件的文件夹

1 个解决方案

Your C++ compiler only knows to search for header files and libraries in standard locations and directories.您的 C++ 编译器只知道在标准位置和目录中搜索 header 文件和库。 Just because you downloaded another library in some directory, somewhere, doesn't mean that your C++ compiler will automatically find it.仅仅因为您在某个目录的某个地方下载了另一个库，并不意味着您的 C++ 编译器会自动找到它。

You will need to change your Makefile and compile your program with the additional compilation options that instruct your C++ compiler to search for header files and libraries in other directories -- typically -I and -L option.您将需要更改 Makefile 并使用其他编译选项编译您的程序，这些选项指示您的 C++ 编译器在其他目录中搜索-I文件和库 - 通常是-L选项。

Additionally, you will probably need to use either -R or -Wl,-rpath options in order for the compiled code to load the shared libraries from the non-standard locations.此外，您可能需要使用-R或-Wl,-rpath选项，以便编译的代码从非标准位置加载共享库。

You will find additional information in the gcc manual and documentation .您可以在gcc手册和文档中找到更多信息。