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Viking is a free/open source program to manage GPS data (including GPX and KML files). You can import and plot tracks, routes and waypoints, show OpenStreetMaps (OSM), Bing Aerial and other maps, generate Mapnik maps, geotag images, make new tracks, routes and waypoints, see real-time GPS position, etc. It is written mostly in C with the GTK+ 2 …
C NSIS Batchfile Shell XSLT C++
Branch: master

SF Bugs#126: Fix crash in gdk_rgb_convert_0888 due to using deallocat…

…ed memory.

There is reference counter in cached pixel buffers.
Previously it always equalled one although multiple tasks could be using it.
Thus when the cache is flushed, memory was always deallocated but then another task would attempt to use it and crash.

Thus now the cached pixel buffer is tracked properly with unref() after being used,
 so only when reference count is zero it is automatically deallocated.

Signed-off-by: Rob Norris <>
latest commit 38597a6d65
@szybig szybig authored committed
Failed to load latest commit information.
data datasources.xml file should be packaged
doc Enable reference documentation generation by disabling optional compo…
help [DOC] Improved introduction.
m4 Reduce warnings from the build due to slightly misformed libcurl.m4 m…
maintainer Notes on how to use
po Add more files that have i18n.
src SF Bugs#126: Fix crash in gdk_rgb_convert_0888 due to using deallocat…
test Fix warning in a test program.
tools Fix renamed file
win32 Releasing Viking 1.6
.gitignore Some geotagging tests.
AUTHORS Add Robert Norris as active contributor
COPYING Initial revision
ChangeLog Auto-Generation of ChangeLog file
ChangeLog.0 Auto-Generation of ChangeLog file
HACKING Wrap long lines. Reactivate doc subtree
NEWS Releasing Viking 1.6
README [DOC] Document the Mapnik Rendering Layer capability.
TODO [DOC] Update the TODO file to say that it's old and superseded by the… Fix in order to install needed files Remove --with-search configure options since they are not used.
viking.doap [DOC] Add links to access Viking's source code [DOC] Document the Mapnik Rendering Layer capability.


Viking is a free/open source program to manage GPS data. You can
import, plot and create tracks, routes and waypoints, show OSM
and other maps, generate maps (using Mapnik),
see real-time GPS position, Geotag Images,
control items, upload/download OSM Traces and more.
It is written mainly in C with some C++ and uses the GTK+2 toolkit.


Obtaining Viking

You can download tarball of latest released version at

You can also retrieve the latest development version on the official
Git repository:
  $ git clone git:// viking

Installing Viking

If you downloaded Viking from Git, you have to:
  $ ./

Next, or if you downloaded a tarball, you have to:
  $ ./configure
  $ make

Check output of "./configure --help" for configuration options.  In
particular, it is possible to disable some features, like
--disable-google in order to disable any Google stuff.

If you wish to install Viking, you have to (as root):
  # make install

For detailed explanation on the install on Unix like systems,
see the INSTALL file.


See test/ subdirectory for examples.


See doc/ and help/ subdirectories for documentation.
You can also access user manual via Help menu entry.
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