[Qgis-user] QGIS and ECW and MrSid formats

[William Kyngesburye]

On Oct 31, 2008, at 11:57 AM, Tom Elwertowski wrote:

> GDAL provides a configure script to add GRASS support as a plugin  
> rather then built-in. There are no configure scripts for ECW and  
> MrSID but it should be possible to copy and modify the GRASS plugin  
> build script. William must have either done this or written his own  
> build routine since he has created working Mac GDAL plugins.


Yes, I originally started with a configured GRASS plugin makefile to  
create makefiles for other plugins.  They're almost unrecognizable  
now, and are tailored to compiling for the OSX framework (universal,  
framework-only, no configure step), but could be easily extended to  
support other systems.

Generally, get the OBJ list from the driver's GNUmakefile, and  
discover the CFLAGS and LDFLAGS (include paths and external libraries)  
needed for the format for your system by running configure as if you  
wanted to build the formats into GDAL (values will be in gdalmake.opt).

Someone who knows autotools (or cmake) could make configurable  
standalone source packages like the GRASS plugin.

-----
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
http://www.kyngchaos.com/

"Mon Dieu! but they are all alike.  Cheating, murdering, lying,  
fighting, and all for things that the beasts of the jungle would not  
deign to possess - money to purchase the effeminate pleasures of  
weaklings.  And yet withal bound down by silly customs that make them  
slaves to their unhappy lot while firm in the belief that they be the  
lords of creation enjoying the only real pleasures of existence....

- the wisdom of Tarzan