RPI4 Raspbian 64 bit & LinuxCNC

Nope both ways get the same error

configure: error: Required OpenGL header missing. Install it, or specify --disable-python to skip the parts of LinuxCNC that depend on Python
pi@raspberrypi:~/linuxcnc-dev/src $ make
Makefile:99: *** Makefile.inc must specify RTPREFIX and other variables. Stop.

Fair point. I have no experience with LinuxCNC I am building a new machine. It as Slave Y axis and I wanted to be able to add a 4th Rotary axis at some point in the future. In my research LinuxCNC was rated high and has been around for a long time. I wanted a standalone system and I did not what to use on of the Chines offline controllers because I was concerned about my lack of experience and the 5 axis control.
So that is how I ended up at LinuxCNC. since I decided to use LinuxCNC I was talking to Peter at Mesa on that hardware that I needed and he told me about the 3G issue with the 8G Rpi4 and that elovalvo had a solution. so I seen this post and figured this is the version I wanted. I did not want high latency with my system and I have a 64 bit Rpi.
I am also still assembling my machine and the 7I96 borads are still on back order I have time to try to make this work. So I thought I would try to make it work.
Do you think I should go back to 32 Bit OS?

I understand, I like challenges. As long as people are willing to help me I am willing to keep trying. I am not ready to start running my mill yet so it is not slowing me down and I am learning so its all good. If anyone is up for the challenge I am game.

Hey All I think I was able to build it on a fresh OS install.
Now I am stuck at the Install phase.
I used elovalvo procedure with Andy's Clone file.
I used the extended wget as elovalvo cautioned me on.
Looks like it is not pointing to the correct location?

This is the error now.
pi@raspberrypi:~ $ wget ftp.it.debian.org/debian/pool/main/p/python-gtksourceview2_2.10.1-3_arm64.deb
--2021-05-06 17:39:46-- ftp.it.debian.org/debian/pool/main/p/pyt...2_2.10.1-3_arm64.deb
Resolving ftp.it.debian.org (ftp.it.debian.org)... 85.94.199.210, 2001:4b78:2000:1::1
Connecting to ftp.it.debian.org (ftp.it.debian.org)|85.94.199.210|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2021-05-06 17:39:47 ERROR 404: Not Found.

Thanks again for all the support!

Is there a specific reason you are building it all from scratch? elovalvo posted some premade images, they make it pretty easy.

Craig wrote:

Do you think I should go back to 32 Bit OS?

The limit of 3g of ram isnt that big a deal if your only running linuxcnc, I operate without issue. The 64bit does have lower latency, but I also dont run any ethernet boards.

elovalvo wrote:

To continue experimenting with using LinuxCNC with a 64-bit kernel on Raspberry Pi 4 I prepared two SD images.

The first, downloadable at the following link:
Linux 5.4.61-rt37-v8 - LinuxCNC 2.8.1
is based on Linux raspberrypi 5.4.61-rt37-v8 with PREEMPT_RT and LinuxCNC 2.8.1

The second, downloadable at the following link:
Linux 5.10.25-rt35-v8 - LinuxCNC 2.9.0~pre0
is based on Linux raspberrypi 5.10.25-rt35-v8 with PREEMPT_RT and LinuxCNC 2.9.0~pre0

Both can be installed with:
Raspberry Pi Imager
that in the latest version (1.6.1) allows you to modify some startup parameters by using hidden commands that can be accessed with the CTRL+SHIFT+X key combination

I checked operation on Raspberry Pi 4 with 2GB and 4GB.
I don't have a Raspberry Pi 4 with 8GB, so it would be interesting to check how it works.

Craig wrote:

Hey All I think I was able to build it on a fresh OS install.
Now I am stuck at the Install phase.
I used elovalvo procedure with Andy's Clone file.
I used the extended wget as elovalvo cautioned me on.
Looks like it is not pointing to the correct location?

This is the error now.
pi@raspberrypi:~ $ wget ftp.it.debian.org/debian/pool/main/p/python-gtksourceview2_2.10.1-3_arm64.deb
--2021-05-06 17:39:46-- ftp.it.debian.org/debian/pool/main/p/pyt...2_2.10.1-3_arm64.deb
Resolving ftp.it.debian.org (ftp.it.debian.org)... 85.94.199.210, 2001:4b78:2000:1::1
Connecting to ftp.it.debian.org (ftp.it.debian.org)|85.94.199.210|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2021-05-06 17:39:47 ERROR 404: Not Found.

Thanks again for all the support!

ftp.it.debian.org/debian/pool/main/p/pyg...2_2.10.1-3_arm64.deb

Thank you,
I have tried that but I cannot figure out how to access the storage. no storage option shows up. Do I need to add the images on a different computer? Currently I built it on the RPi that I am going to run LinuxCNC on?
Also thanks for the Ctrl + Shif +X info I tried to change a few things but still no storage options.

Thanks I tried that one as well I get the same results.
pi@raspberrypi:~ $ wget ftp.it.debian.org/debian/pool/main/p/pyg...2_2.10.1-3_arm64.deb
--2021-05-07 08:05:19-- ftp.it.debian.org/debian/pool/main/p/pyg...2_2.10.1-3_arm64.deb
Resolving ftp.it.debian.org (ftp.it.debian.org)... 85.94.199.210, 2001:4b78:2000:1::1
Connecting to ftp.it.debian.org (ftp.it.debian.org)|85.94.199.210|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2021-05-07 08:05:19 ERROR 404: Not Found.