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Message-ID:	<dd8615b1-4685-1cc9-5a85-c22b775cccbe@dronecode.org.uk>
Date:	Sat, 8 Jul 2023 10:12:04 +0100
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Subject:	Re: iostream doesn't work (clang++)
To:	gs-cygwin DOT com AT gluelogic DOT com, The Cygwin Mailing List <cygwin AT cygwin DOT com>
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From:	Jon Turney via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
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On 07/07/2023 19:18, gs-cygwin.com--- via Cygwin wrote:
> On Fri, Jul 07, 2023 at 04:48:08PM +0100, Jon Turney via Cygwin wrote:
>> On 06/07/2023 00:08, Brian Inglis via Cygwin wrote:
>>>
>>> I have no idea why both compilers would include w32api headers as if
>>> they were building Mingw cross compilers!
>>
>> You are allowed to use the Win32 API in Cygwin programs (with some caveats).
> 
> Interesting.
> 
> Is there some collected wisdom somewhere to which you could point me?
> (specifically the caveats)

The caveats are mentioned in the Cygwin UG. See:

https://cygwin.com/cygwin-ug-net/setup-env.html#setup-env-win32
https://cygwin.com/cygwin-ug-net/using.html#pathnames-win32-api
https://cygwin.com/cygwin-ug-net/programming.html#gcc-64

One additional caveat I am aware of which possibly should be documented 
there, but isn't, is basically "Don't try to use DllMain() in a Cygwin 
DLL, unless you know exactly what you are doing".


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