gcc/Cygwin awareness

[John Williams]

Hi Max,

Max Bowsher wrote:
> John Williams wrote:
> 
>>Elfyn McBratney wrote:
>>
>>>You could use this
>>>
>>>#if defined(__GNUC__) && defined(__CYGWIN__)
>>
>>So __CYGWIN__ is defined in the preprocessor environment when compiling
>>under Cygwin?  That's precisely what I'm after, thanks.
> 
> 
> General answer to this kind of question:
> 
> $ gcc -E -dM -xc /dev/null

Excellent.  Thanks for that, a useful bit of syntax to remember.

John



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