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Re: winmm.dll error 487 is easily reproducible

On 2 March 2011 13:08, EXCOFFIER Denis wrote:
> P.S.: By the way, what is the normal way to install snapshots? It is
> easy to replace cygwin1.dll (keeping around the working one), but in order
> to test the cygwin1 package in full (eg to check within stdio.h whether
> vsnprintf is included under __STRICT_ANSI__ or not)?

You should usually install the cygwin-inst-*.tar.bz2 tarball
containing all the relevant headers and tools along with the DLL.

There's a FAQ entry describing how to install it at

The snapshots page could do with a link to that. However, due to
Cygwin 1.7's ability to overwrite in-use files, including the Cygwin
DLL itself, it's no longer necessary to exclude the DLL when
unpacking, i.e. I find the following works for me:

- Shut down all Cygwin processes, including background services.
- Open a Cygwin shell (with administrator rights if Cygwin was
installed as administrator).
- cd /
- tar xvf /path/to/cygwin-inst-*.tar.bz2
- Close shell.
- Start new shell. Use 'uname -a' to check that you're using the shiny
new snapshot.


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