Cannot find a good post for this. Launchpad addresses ubuntu distributions only.
Any one have success with this?

PHD2 is easy to compile from source, see github.com/OpenPHDGuiding/phd2/wiki/BuildingPHD2OnLinux

Or just follow instructions on indilib.org/get-indi/download-rpi/category/6-raspberry-pi.html

This will install the astroberry repo which also has PHD2

Paul

Andrew, where are you creating the build directory?  When you execute thegit clone --depth 1 github.com/OpenPHDGuiding/phd2.git

command, it creates a phd2 directory and a build sub-directory under it, with what appears to be the files your (make -j $(expr $(nproc) + 2) needs. I cd'd over to that to issue the command below:

The command make -j $(expr $(nproc) + 2) yields the following error:
make: *** No targets specified and no makefile found.  Stop.

I think the expr and nproc variable is not defined. What goes in there?

Thanks for your time.

The link Patrick posted worked.
Thanks!
[SOLVED]

Where ever you like. Git clone will download the source code into a folder. You then create a build directory within it and cd into it. Then run the make command.

You cannot run make directly, cmake is required first.

Also cmake as some interesting option, for example if using all INDI driver you can specify -DOPENSOURCE_ONLY=1
This prevent PHD2 to install its own libasi and libqhy, this keep your system cleaner by not having multiple version of this libraries installed.