Question

Is there a way to configure Hudson to only execute Build or Post Build actions if there are changes in SVN/CVS

Thank you

Answer 1

You can have Hudson poll the SCM for changes and only do things if it finds changes.

Poll SCM: Configure Hudson to poll changes in
SCM.

Note that this is going to be an
expensive operation for CVS, as every
polling requires Hudson to scan the
entire workspace and verify it with
the server. Consider setting up a
“push” trigger to avoid this overhead,
as described in this document

You can also add something to your SCM post-commit hooks that will fire off a Hudson build.

Trigger builds remotely (e.g., from
scripts):
Enable this option if you would like
to trigger new builds by accessing a
special predefined URL (convenient for
scripts).

One typical example for this feature
would be to trigger new build from the
source control system’s hook script,
when somebody has just committed a
change into the repository, or from a
script that parses your source control
email notifications.

You’ll need to provide an
authorization token in the form of a
string so that only those who know it
would be able to remotely trigger this
project’s builds.