I'm currently trying to use googletest with MinGW and -std=c++0x but it complains that _stricmp is not declared in this scope which it doesn't when I do not use -std=c++0x.
I have no idea what _stricmp is, I just found out that it is defined in cstring/string.h, so why is it gone in C++0x?
The -std=c++0x option causes g++ to go into 'strict ANSI' mode so it doesn't declare non-standard functions (and _stricmp() is non-standard - it's just a version of strcmp() that's case-insensitive).
Use -std=gnu++0x instead.
In addition to solution by Michael there is other method for overriding strict ANSI mode. Include the following before any includes in file with compilation problems:
#ifdef __STRICT_ANSI__
#undef __STRICT_ANSI__
#endif
This helps not only with _stricmp also with other common functions like swptintf, vswprintf and simmilar.
You can take a look at MinGW-w64, which allowed me to run Google Tests with -std=c++11 (works with your -std=c++0x as well). It eliminates problems with _stricmp, _strdup and so forth.
来源：https://stackoverflow.com/questions/6312151/stricmp-with-mingw-and-c0x-not-existent