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操作系统标识宏

2010-01-23 22:42:31| 分类： C/VC/C++ | 标签： |举报 |字号大中小订阅

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查看gcc所定义的宏的命令:cpp -dM /dev/null
命令一: cpp -dM /dev/null
命令二: gcc -dM -E - < /dev/null
1:OS MACRO:
WINDOWS: _WIN32、WIN32、_WIN64;
UNIX: unix、__unix、__unix__;

LINUX: linux、__linux、__linux__、__gnu_linux__;
SunOS/SOLARIS: __SVR4、__svr4__、sun、__sun、__sun__、sparc、__sparc、__sparc__;
HPUX: __hppa、__hppa__、__hpux、__hpux__、_HPUX_SOURCE;
AIX: _AIX、_AIX32、_AIX41、_AIX43、_AIX51、_AIX52;
CPU: __x86_64、__x86_64__(Intel); __amd64、__amd64__(AMD); sparc、__sparc、__sparc__(Sun-SPARC);
2:Compiler MACRO:
__STDC__: ANSI C标志,值为1,说明兼容ANSI C标准;
__GNUC__: 它是gcc编译器编译代码时预定义的一个宏;需要针对gcc编写代码时,可以使用这个宏进行条件编译;__GNUC__的值表示gcc的版本号,需要针对特定版本的gcc编写代码时,也可以使用这个宏进行条件编译;__GNUC__的类型是int;
__GNUC_MINOR__: gcc的次版本号;
__GNUC_PATCHLEVEL__: gcc的修订号; 比如:gcc3.4.6版本,则__GNUC__=3;__GNUC_MINOR__=4;__GNUC_PATCHLEVEL__=6;
__GLIBC__: glib的主版本号;
__GLIBC_MINOR__: glib的次版本号;
3:常量宏:
__PRETTY_FUNCTION__: 记录当前函数的函数头信息;
__FUNCTION__: 仅记录当前函数名;
__VA_ARGS__: 保存了可变参数列表"...";
4.C/C++原文件扩展名:
.C:用C语言编写的源代码文件;
.CPP/.CXX:用C++语言编写的源代码文件;
.H/.HPP/.HXX:用C/C++语言编写的头文件;
5.main函数的四种写法:
int main(void)
int main(int argc)
int main(int argc, char** argv)
int main(int argc, char** argv, char** env)
6.VC++的版本号宏:
Visual Studio 5.0 --> VC++5.0 _MSC_VER = 1100
Visual Studio 6.0 --> VC++6.0 _MSC_VER = 1200
Visual Studio 2002 --> VC++7.0 _MSC_VER = 1300
Visual Studio 2003 --> VC++7.1 _MSC_VER = 1310
Visual Studio 2005 --> VC++8.0 _MSC_VER = 1400
Visual Studio 2008 --> VC++9.0 _MSC_VER = 1500

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<#--最新日志，群博日志--> <#--推荐日志-->

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<#-- 网易新闻广告 --> <#--右边模块结构--> <#--评论模块结构--> <#--引用模块结构--> <#--博主发起的投票-->

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