gcc/Cygwin awareness

[John Williams]

Hi folks,

Is there a macro defined in gcc when running under Cygwin as opposed to, 
say, linux?

I'd like to code something like

#ifdef _GCC_UNDER_CYGWIN
blah blah
#else
blah blah
#endif

This is to get around the fact that Cygwin doesn't provide the libgen.h 
header file, which I need to build uClibc for this cross-platform 
project I'm doing.

Thanks,

John



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