Windows能否有__declspec等同于Unix GCC的__attribute __（（弱））？ [英] Does Windows have a __declspec equivalent to Unix GCC's __attribute__((weak))?

问题描述

我要进口一些C code，但覆盖其的main（）功能。我可以通过prefacing的C code的主要申报与 __属性__（（弱）），但是，这不会在Windows编译的Unix做到这一点，因为无论是草莓Perl的海湾合作​​委员会MinGW的也的GCC识别 __ __属性（（弱））。

I want to import some C code but override its main() function. I can do this in Unix by prefacing the C code's main declaration with __attribute__((weak)), however, this won't compile in Windows, because neither Strawberry Perl's GCC nor MinGW's GCC recognize __attribute__((weak)).

阅读文档在线， __ declspec 看起来功能相似。是否有一个 __ declspec 等同于Unix GCC的 __属性__（（弱））宏？

Reading the docs online, __declspec seems to function similarly. Is there a __declspec equivalent to Unix GCC's __attribute__((weak)) macro?

这是一个更具体的版本<一个href=\"http://stackoverflow.com/questions/12395130/trouble-using-scriptedmain-in-mingw/12395171\">earlier问题我张贴。

This is a more specific version of an earlier question I posted.

推荐答案

有与MSVC另一种方式，我的认为的会，如果你愿意使用它。

There's another way with MSVC that I think would work if you care to use it.

/*
 * pWeakValue MUST be an extern const variable, which will be aliased to
 * pDefaultWeakValue if no real user definition is present, thanks to the
 * alternatename directive.
 */

extern const char * pWeakValue;
extern const char * pDefaultWeakValue = NULL;

#pragma comment(linker, "/alternatename:_pWeakValue=_pDefaultWeakValue")

请参阅这个老这么回答了解一些其他的选择。

See this old SO answer for some other options.

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