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#pragma comment( comment-type [,"commentstring"] )





  • /MERGE



/DEFAULTLIB 选项将一个 library 添加到 LINK 在解析引用时搜索的库列表。用 /DEFAULTLIB 指定的库在命令行上指定的库之后和 .obj 文件中指定的默认库之前被搜索。

忽略所有默认库 (/NODEFAULTLIB) 选项重写 /DEFAULTLIB:library。如果在两者中指定了相同的 library 名称,忽略库 (/NODEFAULTLIB:library) 选项将重写 /DEFAULTLIB:library


使用该选项,可以从程序导出函数,以便其他程序可以调用该函数。也可以导出数据。通常在 DLL 中定义导出。entryname 是调用程序要使用的函数或数据项的名称。ordinal 在导出表中指定范围在 1 至 65,535 的索引;如果没有指定 ordinal,则 LINK 将分配一个。NONAME 关键字只将函数导出为序号,没有 entryname

DATA 关键字指定导出项为数据项。客户程序中的数据项必须用 extern __declspec(dllimport) 来声明。

  1. 源代码中的 __declspec(dllexport)

  2. .def 文件中的 EXPORTS 语句

  3. LINK 命令中的 /EXPORT 规范

所有这三种方法可以用在同一个程序中。LINK 在生成包含导出的程序时还创建导入库,除非生成中使用了 .exp 文件。
LINK 使用标识符的修饰形式。编译器在创建 .obj 文件时修饰标识符。如果 entryname 以其未修饰的形式指定给链接器(与其在源代码中一样),则 LINK 将试图匹配该名称。如果无法找到唯一的匹配名称,则 LINK 发出错误信息。当需要将标识符指定给链接器时,请使用 Dumpbin 工具获取该标识符的修饰名形式。


/INCLUDE 选项通知链接器将指定的符号添加到符号表。

若要指定多个符号,请在符号名称之间键入逗号 (,)、分号 (;) 或空格。在命令行上,对每个符号指定一次 /INCLUDE:symbol
链接器通过将包含符号定义的对象添加到程序来解析 symbol。该功能对于添包含不会链接到程序的库对象非常有用。用该选项指定符号将通过 /OPT:REF 重写该符号的移除。

我们经常用到的是#pragma   comment(lib,"*.lib")这类的。
#pragma   comment(lib,"Ws2_32.lib")表示链接Ws2_32.lib这个库。  

posted on 2008-01-10 11:23 sdfasdf 阅读(62512) 评论(36)  编辑 收藏 引用 所属分类: C++


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