[ms4w-users] MS4W MrSID Plugin

Jeff McKenna jmckenna at dmsolutions.ca
Wed May 4 14:55:24 EDT 2005

thanks Frank.  I've created a bug to at least add the gdalplugins folder 
and the GDAL_DRIVER_PATH setting for the next release.


Frank Warmerdam wrote:
> Folks,
> I successfully prepared and tested MrSID Plugin support with MS4W 1.0.1
> on behalf of a client.   It works fine though I had to do a wee bit of hacking
> to get the latested GDAL MrSID code compiled with GDAL 1.2.5 used
> in MS4W. 
> If anyone needs this I could prepare an MS4W 1.0.1 compiled zip, though
> you would still need to download the MrSID SDK separately. 
> My approach was to:
>  o Build a GDAL plugin for the driver for the corresponding version of
>     GDAL (1.2.5) which produced a "gdal_MrSID.dll". 
>  o Dump that into C:\ms4w\gdalplugins
>  o Download the Lizardtech DLL and dump into C:\ms4w\apache\cgi-bin
>  o Add "SetEnv GDAL_DRIVER_PATH \MS4W" to the httpd.conf.
> I could have tried replacing the whole GDAL12.DLL with a 1.2.5
> build that included MrSID support but I was worried about breaking 
> other things. 
> It would be kind of nice if the MS4W package had the C:\MS4W\gdalplugins
> directory "out of the box" in the future, along with the GDAL_DRIVER_PATH
> setting.  If Assefa was feeling ambitious he could even build the MrSID
> plugin and distribute it in C:\MS4W\gdalplugins\ignored.  Then folks who
> want to use it could just download the Lizardtech DLLs themselves, 
> and then move the plugin DLL up one level.
> Best regards,

Jeff McKenna
DM Solutions Group Inc.

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