Downloading GRASS Source

Packaged Source

All source releases are available for download from:

• GRASS 6.3.0: Current technical preview release: Release/6.3.0-News
• GRASS 6.2.3: Current stable release: Release/6.2.3-News
• GRASS 6.2.2: Older stable release: Release/6.2.2-News
• GRASS 5.4.1: Latest very old stable release: Release/5.4.1-News
• Download at ​http://grass.osgeo.org/download/ or directly from
  • ​http://grass.osgeo.org/grass70/source/
  • ​http://grass.osgeo.org/grass64/source/
  • ​http://grass.osgeo.org/grass63/source/
  • ​http://grass.osgeo.org/grass62/source/
  • ​http://grass.osgeo.org/grass54/source/

Weekly snapshots

• ​http://grass.osgeo.org/grass63/source/snapshot/

Subversion GRASS main source code repository

The GRASS GIS software lives in the ​Subversion source control system. It can be browsed online using the ​Browse Source button on the top bar. With the subversion client software installed, various versions can be accessed:

GRASS 7

The new development version of GRASS 7 can be extracted using the command:

  svn checkout https://svn.osgeo.org/grass/grass/trunk grass_trunk
  #Subsequent updates:
  svn up

GRASS 6.4

To extract the current development branch version of GRASS 6 (leading to 6.4.0 stable) use the command:

  svn checkout https://svn.osgeo.org/grass/grass/branches/develbranch_6 grass6_devel
  #Subsequent updates:
  svn up

If you have a local trunk version and want to continue with GRASS 6 development, read here to easily switch to this GRASS 6.4 development branch.

GRASS 6.3

To extract the current release branch version (technology preview) use the command:

  svn checkout https://svn.osgeo.org/grass/grass/branches/releasebranch_6_3 grass63_release

GRASS 6.2

To extract the old stable version use the command:

  svn checkout https://svn.osgeo.org/grass/grass/branches/releasebranch_6_2 grass62_release

Note: Write access to the Subversion repository is governed by ​RFC 2: Legal aspects of code contributions. Committers should take care to use https for access, and use their ​OSGeo Userid for authentication.

Committing code to SVN (developers with write access)

A commit command might look something like:

  svn commit -m "Distinguish between raster and vector backends (bug #999)" main.c --username glynn

After your first commit SVN will remember your OSGeo user id and password so --username only has be used the first time.

To add a new directory, please use (after checking that tmp files were removed and file permissions are appropriate):

  svn add newdir
  svn commit -m "New xyz functionality uploaded" newdir

Subversion GRASS Addons source code repository

With the subversion client software installed, the current GRASS Addons can be extracted using the command:

  svn checkout https://svn.osgeo.org/grass/grass-addons grass-addons

Update access to the Subversion Addons repository is governed by ​RFC 2: Legal aspects of code contributions. Committers should take care to use https for access, and use their ​OSGeo Userid for authentication. A commit command might look something like:

  svn commit -m "Stereo DEM creation" main.c --username glynn

After your first commit SVN will remember your OSGeo user id and password so --username only has be used the first time.

To add a new directory, please use (after checking that tmp files were removed and file permissions are appropriate):

  svn add newdir
  svn commit -m "New xyz functionality uploaded" newdir

Subversion GRASS repository dumpstreams

Incremental dumpstreams of GRASS SVN repository are available at ​http://svn.osgeo.org/dumps/grass/.

Online browseable live web interfaces to source code repository

• TracBrowser interfaces:
  • ​GRASS SVN
  • ​GRASS Addons SVN
  • ​GRASS Web SVN
• ​ViewCVS interface (Subversion backup note: svnsync runs 3 times per day)
• ​Raw SVN server HTML interface

Historical CVS

A copy of GRASS-CVS has been saved ​here.

Compilation notes for various operating systems

Please see ​here.