Linux build / unable to find Python path

Building Blender
1

Hallo, i’ve succefully build blender from Source in Linux. However when launching with ./blender -b, it is not launching and i get this error:
`Python path configuration:
PYTHONHOME = (not set)
PYTHONPATH = (not set)
program name = ‘/netscratch/dongmo/blender-git/build_linux/bin/blender’
isolated = 1
environment = 0
user site = 0
safe_path = 1
import site = 1
is in build tree = 0
stdlib dir = ‘/home/builder/build_linux/deps_x64/Release/python/lib/python3.11’
sys._base_executable = ‘/usr/bin/python’
sys.base_prefix = ‘/home/builder/build_linux/deps_x64/Release/python’
sys.base_exec_prefix = ‘/home/builder/build_linux/deps_x64/Release/python’
sys.platlibdir = ‘lib’
sys.executable = ‘/usr/bin/python’
sys.prefix = ‘/home/builder/build_linux/deps_x64/Release/python’
sys.exec_prefix = ‘/home/builder/build_linux/deps_x64/Release/python’
sys.path = [
‘/home/builder/build_linux/deps_x64/Release/python/lib/python311.zip’,
‘/home/builder/build_linux/deps_x64/Release/python/lib/python3.11’,
‘/home/builder/build_linux/deps_x64/Release/python/lib/python3.11/lib-dynload’,
]
Internal error initializing Python!
Fatal Python error: init_fs_encoding: failed to get the Python codec of the filesystem encoding
Python runtime state: core initialized
ModuleNotFoundError: No module named ‘encodings’

Current thread 0x00007f2b360ee780 (most recent call first):
`

I’m new to blender, what does this mean ? does the isolated pathon from blender fail ? How to solve this ? Thank you very much for any help, it’s a school project and it will save me.

2

Make sure you have run the install step. E.g. if you’re using ninja, after compiling you also need to run ninja install in the build folder.

3

So I followed the instructions given here for debian/ubuntu: Linux - Blender Developer Documentation
I didn’t see this step there. So as i’m using make, should i go to the build_linux folder and run make install ?

4

You should be able to run make install yes.
I’m a bit surprised that this is not in the build steps. Seems like an oversight.
CC @ThomasDinges
EDIT: The install step is alrady part of the make command.

5

Actually, looking at the makefile, it should already run the install step. Can you check if you see this part of the output when you ran make ?

6

I didn’d get it when running make. To be sure of where i have to run my ./blender -b command. It is in the build_linux/bin as in the image 1 or in /usr/local/. as in image 2 :

image
image1232×691 24.7 KB

image 1

7

UsrBlender
UsrBlender1486×135 28.8 KB

image 2

Is the blender quit at the end of second image correct ?

8

Yes that looks correct! If you run blender without any other command line options in background mode, it won’t do anything and quit. Try e.g. ./blender -b --python-console to get an interactive python shell within the instance.

9

thank you alot. I’m not sure but it seems the make install didn’t work well when running make. Because i got all these after running make install. Not sure but the documentation says the executable should be in the build_linux folder. I will invest it and let know if there is an issues/bug with build and report

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