Cygwin is a reserved version[1], alongside Windows and linux and the like. However it doesn't seem to be automatically recognised.

> import std.stdio;
> 
> void main()
> {
>     version(Cygwin) writeln("Cygwin");
> }

Compiled from a Cygwin prompt this prints nothing. So I thought to add versions: [ "Cygwin" ] to dub.json, but dub refuses.

> Error: version identifier `Cygwin` is reserved and cannot be set

Is there any way to force Cygwin or should I resign to creating an alternative lowercase "cygwin" version?

The use-case is to version stdout.flush() here and there to counter that the default Cygwin terminal (mintty) doesn't update when text is written to the terminal. I forget the reason why it doesn't.


[1]: https://dlang.org/spec/version.htm

On 21/12/2017 4:22 PM, Anonymouse wrote:
> Cygwin is a reserved version[1], alongside Windows and linux and the like. However it doesn't seem to be automatically recognised.
> 
>> import std.stdio;
>>
>> void main()
>> {
>>     version(Cygwin) writeln("Cygwin");
>> }
> 
> Compiled from a Cygwin prompt this prints nothing. So I thought to add versions: [ "Cygwin" ] to dub.json, but dub refuses.
> 
>> Error: version identifier `Cygwin` is reserved and cannot be set
> 
> Is there any way to force Cygwin or should I resign to creating an alternative lowercase "cygwin" version?
> 
> The use-case is to version stdout.flush() here and there to counter that the default Cygwin terminal (mintty) doesn't update when text is written to the terminal. I forget the reason why it doesn't.
> 
> 
> [1]: https://dlang.org/spec/version.htm

You are not using a Cygwin build.
It doesn't matter who calls a process, it doesn't change the version's by itself.

As far as I know, nobody supports Cygwin like this.

On Friday, 22 December 2017 at 03:24:15 UTC, rikki cattermole wrote:
> You are not using a Cygwin build.
> It doesn't matter who calls a process, it doesn't change the version's by itself.
>
> As far as I know, nobody supports Cygwin like this.

I see, thank you.