关于/ENTRY (Entry-Point Symbol)

• The /ENTRY option specifies an entry point function as the starting address for an .exe file or DLL.
• By default, the starting address is a function name from the C run-time library. The linker selects it according to the attributes of the program, as shown in the following table.
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• 关于VS2005：LIBCMTD.lib(crt0.obj) : error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup
• 建一CUI程序
• Use Unicode Character Set
• Entry Point ：wmain
• Rebuild则出现上述错误，奇怪的是错误提示_main没有定义，而不是_wmain??
• 估计原因：默认情况下，linker通过Character set和SubSystem选择entry point function（见上表），再链接我们定义的入口函数（_main(_wmain)或WinMain（wWinMain））。现改变了Entry Point，则linker默认链接_main函数，无法找到，故错误提示。
• 若重新定义一main函数或修改Character set为Use Multi-Byte Character Set，则会链接成功。