If you're looking for a silent installation, this is done by specifying
the installation mode as unattended.
I quote from
How can I silent install on Mac OS X?
In order to run InstallBuilder based installer in silent mode, you can
specify --mode unattended
- such as:
$ Installer.app/Contents/MacOS/installbuilder.sh --mode unattended
You can also make the unattended mode the default by adding the
following to your project file:
<project>
<defaultInstallationMode>unattended</defaultInstallationMode>
</project>
This will cause the installer to run in unattended mode by default.
You can also change to minimalWithDialogs to also
show the progress bar:
<project>
<defaultInstallationMode>unattended</defaultInstallationMode>
<unattendedModeUI>minimalWithDialogs</unattendedModeUI>
</project>
After that, the installer will run in unattended mode by default and
can still be switched to full GUI by running it from command line with
--mode osx
or --mode qt
depending on if you are using Qt flavor of
InstallBuilder.
However, the user will still have to double-click on the installer -
and due to security issues it is not possible to automate this step
(to avoid automatically running a virus or other unsafe file).