====== User Software :: CR-Tools :: Update of an installation =====

Once you have your initial [[public:user software:CR-Tools]] installation, of course you would like to keep up with updates and other changes. 

=== 1. Retrieve the lasted version of the source code from the Subversion repository ===

Given your typical installation looks like this
<code>
lofarsoft
|-- build
|   `-- build.sh
|-- data
|-- devel_common
|-- doc
|-- external
|-- release
|   |-- bin
|   |-- include
|   `-- lib
`-- src
    |-- CR-Tools
    `-- DAL
</code>
you have two options:

  - Directly run <code bash>svn up</code> from the top-level directory of your working copy of the code tree.
  - Call the //update// target provided by the CMake-generated //Makefile//: <code bash>
cd build
make update
</code>

__Notes:__ 

  * In general you can of course run the update from any subdirectory of your installation, but I would strongly advise to follow the above example, because this is the safest route to catch all updates which have been taken place since the last time you went through this process. Even though most likely your main interest will be in updating whatever is contained within ''src/CR-Tools'', modifications in directories such as ''external'' or ''devel_common'' are aimed at improving the overall flexibility and portability of the software -- so make sure you do not miss them.

=== 2. Initiate a new build and install ===

Simply run the build script to compile the latest version of the source code and install it:

<code bash>
cd build
./build.sh cr
</code>

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<- [[public:user software:User Software]] • [[public:user software:CR-Tools]]