I have the 21.1.0.2 version. So that’s why I have this problem. I actually need 
to use the older version for now so I will downgrade < 11 python.

Thanks for your help,
Ioannis

On 29 Sep 2023, at 3:20 PM, Bobby Bruce <bbr...@ucdavis.edu> wrote:


--
Dr. Bobby R. Bruce
Room 3050,
Kemper Hall, UC Davis
Davis,
CA, 95616

web: https://www.bobbybruce.net

On Sep 29, 2023, at 5:19 AM, Bobby Bruce <bbr...@ucdavis.edu> wrote:

What version of gem5 are you using? In the latest version, v23.0 (`git clone 
https://github.com/gem5/gem5.git`<https://github.com/gem5/gem5.git%60> is all 
you'd need to do), this bug has been fixed.

Though if you need to use an older version of gem5 for a good reason then, yes, 
just downgrade Python 11 to anything <11. This bug was hell to fix. Python 
changed how regex was processed and it took forever to figure out and even 
longer to come up with a solution.

--
Dr. Bobby R. Bruce
Room 3050,
Kemper Hall, UC Davis
Davis,
CA, 95616

web: https://www.bobbybruce.net

On Sep 29, 2023, at 5:14 AM, Ioannis Constantinou 
<constantinou.ioan...@ucy.ac.cy> wrote:

Hello,

I tried what you suggested too and it does not work.

I actually found an issue in this link 
https://gem5.atlassian.net/browse/GEM5-1295 . So I suspect this is why 
python3.11 does not work. The version of gem5 I have is 2.0 . So I think it’s 
best to stick with python3.8 until I can switch to a newer version of gem5

Thank you for your help,
Ioannis Constantinou

On 29 Sep 2023, at 2:34 PM, Bobby Bruce <bbr...@ucdavis.edu> wrote:

Python 11 should work fine as far as i know.

Try removing your build directory and recompiling from scratch (`rm -rf build 
&& scons build/ALL/gem5.opt`). gem5 can get confused if you've moved the build 
directory across different machines or changed stuff in the machines 
environment. This may not be the cause but it's the most common reason for this 
error.

--
Dr. Bobby R. Bruce
Room 3050,
Kemper Hall, UC Davis
Davis,
CA, 95616

web: https://www.bobbybruce.net

On Sep 28, 2023, at 1:51 PM, Ioannis Constantinou via gem5-users 
<gem5-users@gem5.org> wrote:

Hello,
I’m trying to build gem5 with GCC-12.3 and Python-3.11 and I get the "Error: 
Can't find a working Python installation”. With Python-3.8 and GCC-11.3 it 
works perfectly fine.

In there a compatibility problem with Python-3.11?

I also tried adding the absolute path after “scons build/X86/gem.opt -j9 
PYTHON_CONFIG=“…” but didn’t work.

Thank you,
Ioannis Constantinou
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