Updated: Cygwin 1.7.23

Corinna Vinschen corinna-cygwin@cygwin.com
Fri Aug 9 09:15:00 GMT 2013

Hi Cygwin friends and users,

I just released Cygwin 1.7.23.

                     ABOUT THE 64 BIT RELEASE
This is only the second official Cygwin release which is publically
available as a 64 bit version for AMD64 Windows systems, so it's
pretty new.

Right now the 64 bit Cygwin distribution doesn't come with as many
packages as the 32 bit version, but it's as stable as the 32 bit version,
and more packages will be available over time.

If you're already running a 32 bit version of Cygwin on 64 bit Windows
machines, you can continue to do so.  If you're planning a new install
of Cygwin on a 64 bit Windows machine, consider to use the new 64 bit
Cygwin version, unless you need certain packages not yet available in
the 64 bit release.

To install 32-bit Cygwin use the new http://cygwin.com/setup-x86.exe
To install 64 bit Cygwin use the new http://cygwin.com/setup-x86_64.exe

Other than that, 1.7.23 is mostly a bugfix release.

What changed:

- Added CYGWIN environment variable keyword which causes the full windows
  command line (<=32K) to always be sent to subprocesses.
  See: http://cygwin.com/ml/cygwin/2013-07/threads.html#00523

Bug fixes:

- Fix race condition in POSIX semaphores which potentially breaks fork() when
  using POSIX semaphores in a multithreaded process.
  Fixes: http://cygwin.com/ml/cygwin/2013-07/msg00404.html

- Fix cyglsa build problem which made the cyglsa DLLs entirely non-functional
  when built with newer gcc versions.
  Fixes: http://cygwin.com/ml/cygwin/2013-07/msg00656.html

- Fix incorrect handling of /.. or //.. in parent path existence check.
  Fixes: http://cygwin.com/ml/cygwin/2013-07/msg00689.html

Have fun,


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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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