Should we install rtt, log4cpp and ocl independently, or install orocos-toolchain as a whole instead?

[kaixqu]

I want to install orocos-toolchain as a whole. So I went to https://orocos-toolchain.github.io/.

And I saw there is only

• Installing the RTT (pdf)

So I installed rtt, and I succeed. However, I found that I don't have ocl package.

# orocreate-pkg HelloWorld
orocreate-pkg: command not found

So I goes on to install ocl. I saw this on the https://github.com/orocos-toolchain/ocl/blob/toolchain-2.9/INSTALL .

NOTE - The Orocos Component Library is now part of the 
Orocos Toolchain and should seldomly be installed
separately. Install the Orocos Toolchain instead.

However, there is really nothing in this repo. I can only find orocos-toolchain 2.6 from http://www.orocos.org/toolchain.

In addition, I got really confused that on another branch https://github.com/orocos-toolchain/orocos_toolchain/tree/installation-script

The Open RObot COntrol Software (Orocos) Toolchain is a bundle of multiple packages, which need to be build and installed separately.
- Orocos Real-Time Toolkit (rtt) - a component framework that allows us to write real-time components in C++
- Orocos Log4cpp (log4cpp) - a patched version of the Log4cpp library for flexible logging to files, syslog, IDSA and other destinations
- Orocos Component Library (ocl) - the necessary components to start an application and interact with it at run-time

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To sum it up, how can we install orocos-toolchain 2.9.0? Separately or As a whole?

Also could any one change the default branch to the newest one? These branches are somewhat confusing. Thanks! :-)

The same issues as orocos-toolchain/orocos_toolchain#30

[roboticsai]

Here is one method to do so but it is integrated with ros.

[kaixqu]

Thanks!

Is it a good practice to use rtt_ros_integration for all the time? Feels like this one is more up-to-date and easy to use.