Linux 用 C++ 为 OSX 创建共享库
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原文地址: http://stackoverflow.com/questions/14173260/
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Creating shared libraries in C++ for OSX
提问by
I just started programming in C++ and I've realized that I've been having to write the same code over and over again(mostly utility functions).
我刚开始用 C++ 编程，我意识到我不得不一遍又一遍地编写相同的代码（主要是实用程序函数）。
So, I'm trying to create a shared library and install it in PATH so that I could use the utility functions whenever I needed to.
因此，我正在尝试创建一个共享库并将其安装在 PATH 中，以便我可以在需要时使用实用程序函数。
Here's what I've done so far :-
这是我到目前为止所做的：-
Create a file utils.hwith the following contents :-
创建一个utils.h包含以下内容的文件：-
#include<iostream>
#include<string>
std::string to_binary(int x);
Create a file utils.cppwith the following contents :-
创建一个utils.cpp包含以下内容的文件：-
#include "utils.h"
std::string to_binary(int x) {
std::string binary = "";
while ( x > 0 ) {
if ( x & 1 ) binary += "1";
else binary += "0";
x >>= 1;
}
return binary;
}
Follow the steps mentioned here :- http://www.techytalk.info/c-cplusplus-library-programming-on-linux-part-two-dynamic-libraries/
按照这里提到的步骤：- http://www.techytalk.info/c-cplusplus-library-programming-on-linux-part-two-dynamic-libraries/
- Create the library object code :
g++ -Wall -fPIC -c utils.cpp
- 创建库对象代码：
g++ -Wall -fPIC -c utils.cpp
But as the link above is meant for Linux it does not really work on OSX. Could someone suggest reading resources or suggest hints in how I could go about compiling and setting those objects in the path on an OSX machine?
但是由于上面的链接是针对 Linux 的，它在 OSX 上并不真正有效。有人可以建议阅读资源或建议我如何在 OSX 机器上的路径中编译和设置这些对象的提示吗？
Also, I'm guessing that there should be a way I can make this cross-platform(i.e. write a set of instructions(bash script) or a Makefile) so that I could use to compile this easily across platforms. Any hints on that?
另外，我猜应该有一种方法可以使这个跨平台（即编写一组指令（bash 脚本）或 Makefile），以便我可以轻松地跨平台编译它。任何提示？
采纳答案by linuxbuild
Use -dynamicliboption to compile a dynamic library on OS X:
使用-dynamiclib选项在 OS X 上编译动态库：
g++ -dynamiclib -o libutils.dylib utils.cpp
And then use it in your client application:
然后在您的客户端应用程序中使用它：
g++ client.cpp -L/dir/ -lutils
回答by spartygw
The link you posted is using C and the C compiler. Since you are building C++:
您发布的链接使用 C 和 C 编译器。由于您正在构建 C++：
g++ -shared -o libYourLibraryName.so utils.o
