* Cygwin version detection at run time
@ 2015-08-14 13:56 Václav Haisman
2015-08-14 14:11 ` Eliot Moss
0 siblings, 1 reply; 5+ messages in thread
From: Václav Haisman @ 2015-08-14 13:56 UTC (permalink / raw)
To: cygwin
Hi.
I am trying to find out Cygwin version at run time.
I have noticed that there is `cygwin_internal (CW_GETVERSIONINFO)` API
for this. However, it seems that the `cygwin_version_info` structure
this call is supposed to fill in is not publicly available and is only
declared internally in `winsup/cygwin/cygwin_version.h`.
Am I right that my only option is either to copy the internal
declaration of the structure or to use `/proc/version` and parse the
version string out of that?
--
VH
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Cygwin version detection at run time
2015-08-14 13:56 Cygwin version detection at run time Václav Haisman
@ 2015-08-14 14:11 ` Eliot Moss
2015-08-14 15:08 ` Václav Haisman
0 siblings, 1 reply; 5+ messages in thread
From: Eliot Moss @ 2015-08-14 14:11 UTC (permalink / raw)
To: cygwin
On 8/14/2015 9:56 AM, Václav Haisman wrote:
> Hi.
>
> I am trying to find out Cygwin version at run time.
>
> I have noticed that there is `cygwin_internal (CW_GETVERSIONINFO)` API
> for this. However, it seems that the `cygwin_version_info` structure
> this call is supposed to fill in is not publicly available and is only
> declared internally in `winsup/cygwin/cygwin_version.h`.
>
> Am I right that my only option is either to copy the internal
> declaration of the structure or to use `/proc/version` and parse the
> version string out of that?
There's uname, whose options allow getting various parts of what
/proc/version gives you. uname is also somewhat portable across
different flavors of linux ...
Eliot Moss
--
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Cygwin version detection at run time
2015-08-14 14:11 ` Eliot Moss
@ 2015-08-14 15:08 ` Václav Haisman
2015-08-14 15:44 ` Corinna Vinschen
0 siblings, 1 reply; 5+ messages in thread
From: Václav Haisman @ 2015-08-14 15:08 UTC (permalink / raw)
To: cygwin
On 14 August 2015 at 16:11, Eliot Moss <moss@cs.umass.edu> wrote:
> On 8/14/2015 9:56 AM, Václav Haisman wrote:
>>
>> Hi.
>>
>> I am trying to find out Cygwin version at run time.
>>
>> I have noticed that there is `cygwin_internal (CW_GETVERSIONINFO)` API
>> for this. However, it seems that the `cygwin_version_info` structure
>> this call is supposed to fill in is not publicly available and is only
>> declared internally in `winsup/cygwin/cygwin_version.h`.
>>
>> Am I right that my only option is either to copy the internal
>> declaration of the structure or to use `/proc/version` and parse the
>> version string out of that?
>
>
> There's uname, whose options allow getting various parts of what
> /proc/version gives you. uname is also somewhat portable across
> different flavors of linux ...
Never mind, I have figured it out. The `cygwin_internal
(CW_GETVERSIONINFO)` actually returns a pointer to string which can
be parsed reliably. I have used it.
--
VH
--
Problem reports: http://cygwin.com/problems.html
FAQ: http://cygwin.com/faq/
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Cygwin version detection at run time
2015-08-14 15:08 ` Václav Haisman
@ 2015-08-14 15:44 ` Corinna Vinschen
2015-08-17 10:20 ` Václav Haisman
0 siblings, 1 reply; 5+ messages in thread
From: Corinna Vinschen @ 2015-08-14 15:44 UTC (permalink / raw)
To: cygwin
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On Aug 14 17:08, Václav Haisman wrote:
> On 14 August 2015 at 16:11, Eliot Moss <moss@cs.umass.edu> wrote:
> > On 8/14/2015 9:56 AM, Václav Haisman wrote:
> >>
> >> Hi.
> >>
> >> I am trying to find out Cygwin version at run time.
> >>
> >> I have noticed that there is `cygwin_internal (CW_GETVERSIONINFO)` API
> >> for this. However, it seems that the `cygwin_version_info` structure
> >> this call is supposed to fill in is not publicly available and is only
> >> declared internally in `winsup/cygwin/cygwin_version.h`.
> >>
> >> Am I right that my only option is either to copy the internal
> >> declaration of the structure or to use `/proc/version` and parse the
> >> version string out of that?
> >
> >
> > There's uname, whose options allow getting various parts of what
> > /proc/version gives you. uname is also somewhat portable across
> > different flavors of linux ...
>
> Never mind, I have figured it out. The `cygwin_internal
> (CW_GETVERSIONINFO)` actually returns a pointer to string which can
> be parsed reliably. I have used it.
cygwin_internal(CW_GETVERSIONINFO) is an API for non-Cygwin tools like
cygcheck, not for general consumption. For a Cygwin executable, better
use uname(2) instead.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Maintainer cygwin AT cygwin DOT com
Red Hat
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Cygwin version detection at run time
2015-08-14 15:44 ` Corinna Vinschen
@ 2015-08-17 10:20 ` Václav Haisman
0 siblings, 0 replies; 5+ messages in thread
From: Václav Haisman @ 2015-08-17 10:20 UTC (permalink / raw)
To: cygwin
On 14 August 2015 at 17:44, Corinna Vinschen wrote:
> On Aug 14 17:08, Václav Haisman wrote:
>> On 14 August 2015 at 16:11, Eliot Moss wrote:
>> > On 8/14/2015 9:56 AM, Václav Haisman wrote:
>> >>
>> >> Hi.
>> >>
>> >> I am trying to find out Cygwin version at run time.
>> >>
>> >> I have noticed that there is `cygwin_internal (CW_GETVERSIONINFO)` API
>> >> for this. However, it seems that the `cygwin_version_info` structure
>> >> this call is supposed to fill in is not publicly available and is only
>> >> declared internally in `winsup/cygwin/cygwin_version.h`.
>> >>
>> >> Am I right that my only option is either to copy the internal
>> >> declaration of the structure or to use `/proc/version` and parse the
>> >> version string out of that?
>> >
>> >
>> > There's uname, whose options allow getting various parts of what
>> > /proc/version gives you. uname is also somewhat portable across
>> > different flavors of linux ...
>>
>> Never mind, I have figured it out. The `cygwin_internal
>> (CW_GETVERSIONINFO)` actually returns a pointer to string which can
>> be parsed reliably. I have used it.
>
> cygwin_internal(CW_GETVERSIONINFO) is an API for non-Cygwin tools like
> cygcheck, not for general consumption. For a Cygwin executable, better
> use uname(2) instead.
Thanks. Uname call's utsname structure is much easier to parse.
--
VH
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2015-08-14 13:56 Cygwin version detection at run time Václav Haisman
2015-08-14 14:11 ` Eliot Moss
2015-08-14 15:08 ` Václav Haisman
2015-08-14 15:44 ` Corinna Vinschen
2015-08-17 10:20 ` Václav Haisman
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