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SlackBuilds for qgis and gdal

Posted 06-29-2010 at 06:00 AM by 55020

Here's some news on two of the SlackBuilds I maintain at


It appears that the update of SIP in Slackware 13.1 (which occurred quite late in the -current cycle) exposed some breakage in the qgis build system. The consequence is that the current SBo-13.1 "BUILD=1" qgis-1.4.0 script builds without Python support. Unfortunately this means that a lot of qgis plugin functionality is disabled.

The problem is known upstream. It's easy to patch the relevant cmake file to disable the broken SIP version check ( and so re-enable the Python support. I have now submitted a revised "BUILD=2" SlackBuild and it should show up shortly at SBo.


The version of gdal currently at SBo is 1.6.3. There are newer versions of gdal available upsteam, but qgis-1.4.0 crashes in certain circumstances with gdal-1.7.2. Backtrace reveals a floating point exception in GDALRasterBand::RasterIO. I suspect that the upstream bug fix is here:

As qgis is the only package at SBo that requires gdal, I won't patch gdal-1.7.2 -- I'll wait until there's a new version of gdal upstream that incorporates this bug fix.

Hope someone finds this interesting or helpful.
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