Mail Archives: cygwin/2001/10/20/11:33:30
On Sat, Oct 20, 2001 at 04:18:16PM +0100, David Starks-Browning wrote:
>On Saturday 20 Oct 01, egor duda writes:
>> ... if/when cygwin team is about to make backward-incompatible
>> changes to cygwin, dll is supposed to be renamed to cygwin2.dll
>>
>> you can look at "api major" and "api minor" lines in output from
>> 'cygcheck -v -s'. "api minor" is incremented whenever anybody makes
>> forward-incompatible changes to dll (such as exporting new function or
>> data from dll). "api major" is incremented whenever backward-
>> incompatible change is made.
>
>There is an entry in the API section of the FAQ, but it has not been
>updated since B19:
>
>Q. What version numbers are associated with Cygwin?
>
>A. There is a cygwin.dll major version number that gets incremented
> every time we make a new Cygwin release available. This
> corresponds to the name of the release (e.g. beta 19's major
> number is "19"). There is also a cygwin.dll minor version
> number. If we release an update of the library for an existing
> release, the minor number would be incremented.
>
> There are also Cygwin API major and minor numbers. The major
> number tracks important non-backward-compatible interface changes
> to the API. An executable linked with an earlier major number will
> not be compatible with the latest DLL. The minor number tracks
> significant API additions or changes that will not break older
> executables but may be required by newly compiled ones.
>
> Then there is a shared memory region compatibity version
> number. It is incremented when incompatible changes are made to
> the shared memory region or to any named shared mutexes,
> semaphores, etc.
>
> Finally there is a mount point registry version number which keeps
> track of non-backwards-compatible changes to the registry mount
> table layout. This has been "B15.0" since the beta 15 release.
table layout. This has been "2" since Cygwin B20.1 or so.
cgf
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