Problems with building Linux CNC source

After installing new Linux CNC 2.8.2, downloading source, resolving dependencies etc. I was able to build the software package. All that was done according to this document:

linuxcnc.org/docs/html/code/building-linuxcnc.html

Now I would like to run the recompiled Linux CNC with my ini file and I get the following error message:

Debug file information:
Note: Using POSIX realtime
note: MAXV max: 25.000 units/sec 1500.000 units/min
note: LJOG max: 25.000 units/sec 1500.000 units/min
note: LJOG default: 6.000 units/sec 360.000 units/min
note: jog_order='XYZ'
note: jog_invert=set()
Traceback (most recent call last):
File "/home/smal/linuxcnc-dev/bin/axis", line 3929, in <module>
get_coordinate_font(vars.dro_large_font.get())
File "/home/smal/linuxcnc-dev/bin/axis", line 3808, in get_coordinate_font
glnav.use_pango_font(coordinate_font, 0, 128)
File "/home/smal/linuxcnc-dev/lib/python/glnav.py", line 13, in use_pango_font
import cairo
ModuleNotFoundError: No module named 'cairo'
1287
1318
Stopping realtime threads
Unloading hal components
RTAPI_PCI: Unmapped 65536 bytes at 0x7f81503b5000
Note: Using POSIX realtime

When I try to install the cairo package I get this message:

sudo apt install libcairo2

Reading package lists... Done
Building dependency tree
Reading state information... Done
libcairo2 is already the newest version (1.16.0-4+deb10u1).
libcairo2 set to manually installed.
The following package was automatically installed and is no longer required:
gstreamer1.0-pulseaudio
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

What to do to get my compiled Linux CNC in working condition?

Now OpenGL seems to be the problem:

Debug file information:
Note: Using POSIX realtime
Traceback (most recent call last):
File "/home/smal/linuxcnc-dev/bin/gladevcp", line 50, in <module>
import gladevcp.makepins
File "/home/smal/linuxcnc-dev/lib/python/gladevcp/__init__.py", line 1, in <module>
from .hal_pythonplugin import *
File "/home/smal/linuxcnc-dev/lib/python/gladevcp/hal_pythonplugin.py", line 30, in <module>
from .hal_gremlin import HAL_Gremlin
File "/home/smal/linuxcnc-dev/lib/python/gladevcp/hal_gremlin.py", line 36, in <module>
import gremlin
File "/home/smal/linuxcnc-dev/lib/python/gremlin.py", line 47, in <module>
from OpenGL.GL import *
ModuleNotFoundError: No module named 'OpenGL'
<commandline>:0: waitpid failed gladevcp gladevcp
<commandline>:0: gladevcp exited without becoming ready
note: MAXV max: 25.000 units/sec 1500.000 units/min
note: LJOG max: 25.000 units/sec 1500.000 units/min
note: LJOG default: 6.000 units/sec 360.000 units/min
note: jog_order='XYZ'
note: jog_invert=set()
5420
5451
Stopping realtime threads
Unloading hal components
RTAPI_PCI: Unmapped 65536 bytes at 0x7f2aefd31000
Note: Using POSIX realtime

What to install next to solve this problem?

Try this. I had a lot of fun with dependencies NOT

Yes, with this command: dpkg-checkbuilddeps I dont get any missing libraries.

I dont have pip3. With using sudo apt install I get:

smal@LinuxCNC:~/linuxcnc-dev$ sudo apt install --upgrade setuptools
[sudo] password for smal:
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package setuptools
smal@LinuxCNC:~/linuxcnc-dev$ sudo apt install QScintilla
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package QScintilla

I have tried with the install_script and after installing numerous software packages I have the same problem as before: OpenGL is missing. Should there be any other action than ./install_script to make every thing work? I mean at the bottom of printouts I can see:

installing python2 tools
Reading package lists... Done
Building dependency tree
Reading state information... Done
libpython-dev is already the newest version (2.7.16-1).
libpython-dev set to manually installed.
The following package was automatically installed and is no longer required:
gstreamer1.0-pulseaudio
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

rename original plugin module


copy python2 plugin module from:
/home/smal/linuxcnc-dev/lib/python/qtvcp/designer/x86_64/qt5.11/libpyqt5_py2.so.tar.gz
to:
/usr/lib/x86_64-linux-gnu/qt5/plugins/designer


create plugin link at:
~/.designer/plugins/python/


Installation complete, designer can be started with:

designer -qt=5

After setting the rip-environment

Are this actions of any importance? Do I have to perform them?
After this solution didn't worked I have installed the pip3 software. Then I have installed the proposed packages with:

pip3 install --upgrade setuptools
pip3 install QScintilla
pip3 install numpy
pip3 install PyOpenGL

All except of QScintilla were installed without errors. With Qscintila I got:

smal@LinuxCNC:~$ pip3 install QScintilla
Collecting QScintilla
Downloading files.pythonhosted.org/packages/46/a3/27...ntilla-2.13.0.tar.gz (1.7MB)
100% |████████████████████████████████| 1.7MB 752kB/s
Installing build dependencies ... done
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python3.7/tokenize.py", line 447, in open
buffer = _builtin_open(filename, 'rb')
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-7h9y2a5j/QScintilla/setup.py'

---

Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-7h9y2a5j/QScintilla/

I hope that this does not affect anything. After trying to start the LinuxCNC I got this message:

Debug file information:
Note: Using POSIX realtime
Traceback (most recent call last):
File "/home/smal/linuxcnc-dev/bin/gladevcp", line 50, in <module>
import gladevcp.makepins
File "/home/smal/linuxcnc-dev/lib/python/gladevcp/__init__.py", line 1, in <module>
from .hal_pythonplugin import *
File "/home/smal/linuxcnc-dev/lib/python/gladevcp/hal_pythonplugin.py", line 42, in <module>
from .hal_sourceview import *
File "/home/smal/linuxcnc-dev/lib/python/gladevcp/hal_sourceview.py", line 28, in <module>
gi.require_version("GtkSource","3.0")
File "/usr/lib/python3/dist-packages/gi/__init__.py", line 129, in require_version
raise ValueError('Namespace %s not available' % namespace)
ValueError: Namespace GtkSource not available
<commandline>:0: waitpid failed gladevcp gladevcp
<commandline>:0: gladevcp exited without becoming ready
note: MAXV max: 25.000 units/sec 1500.000 units/min
note: LJOG max: 25.000 units/sec 1500.000 units/min
note: LJOG default: 6.000 units/sec 360.000 units/min
note: jog_order='XYZ'
note: jog_invert=set()
8653
8683
Stopping realtime threads
Unloading hal components
RTAPI_PCI: Unmapped 65536 bytes at 0x7f70dd796000
Note: Using POSIX realtime

I guess I am making some progress because the missing OpenGL is not active any more. But what to do in this case?