Python 3.13.1-jit : issue when compiling from source

[aldeponk]

Hi all,

I am trying to build python 3.13.1 from source (grabed here https://www.python.org/ftp/python/3.13.1/Python-3.13.1.tgz) on Ubuntu 22.04 instance with configuration so that I disable GIL + get JIT :

./configure --disable-gil --enable-experimental-jit --enable-optimizations --with-lto

Requirements installed according to https://devguide.python.org/getting-started/setup-building/index.html#install-dependencies

The make step fails with error :

gcc -c -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall    -D_Py_TIER2=1 -D_Py_JIT -fno-semantic-interposition -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -std=c11 -Wextra -Wno-unused-parameter
 -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden -fprofile-generate -I./Include/internal -I./Include/internal/mimalloc  -I. -I./Include    -DPy_BUILD_CORE -o Python
/mystrtoul.o Python/mystrtoul.c
Traceback (most recent call last):
  File "/tmp/Python-3.13.1/./Tools/jit/build.py", line 8, in <module>
    import _targets
  File "/tmp/Python-3.13.1/Tools/jit/_targets.py", line 15, in <module>
    import _schema
  File "/tmp/Python-3.13.1/Tools/jit/_schema.py", line 60, in <module>
    class MachORelocation(typing.TypedDict):
  File "/tmp/Python-3.13.1/Tools/jit/_schema.py", line 64, in MachORelocation
    Section: typing.NotRequired[dict[typing.Literal["Value"], str]]
AttributeError: module 'typing' has no attribute 'NotRequired'

I've been looking around, and was not able to find any reference to this kind of issue. What am i doing wrong ?

Thank you so much for any help in reply.

Linked PRs

• gh-129438: Update --enable-experimental-jit section with install requirements #129450
• [3.13] gh-129438: Update --enable-experimental-jit section with install requirements (GH-129450) #129472

[Eclips4]

Hello!
To build JIT from source, Python 3.11+ must be installed on your system. Your Python version seems to be older, as it does not have typing.NotRequired.

[Eclips4]

However, there's no information in the docs that building CPython with JIT requires a Python 3.11+. It would be good to cover it in the docs.

[Fidget-Spinner]

Just an FYI also, when you build with GIL disabled the JIT is actually disabled at runtime (at least via the specializing interpreter in 3.13), so there's no point to --enable-experimental-jit with --disable-gil.

[aldeponk]

This sounds so obvious, feel ashamed I didn't think of it.
I have a go with this, if I succeed in achieving a proper build I'll close the issue.
Thank you so much.

[Eclips4]

This sounds so obvious, feel ashamed I didn't think of it. I have a go with this, if I succeed in achieving a proper build I'll close the issue. Thank you so much.

Please don't close this issue, even if your problem has been resolved. We should document that building CPython with JIT requires Python 3.11+. So, let's reuse this issue for that 🙂

[aldeponk]

I came to a stable build !

Note that Ubuntu 22.04 comes with a 3.10 python version.

The sequence I used :

• installed python 3.13 from deadsnake without changing default python3 version not to break apt/apt-get
• installed dependancy packages required for the build
• installed llvm
• change default python3 version to 3.13.1 (change symlink)
• build python3.13.1t
• restore default python3 version to 3.10

I can now experiment 3.13.1t, thank you for your crucial hint