[Python-3000] Dealing with timestamp issues for rebuiling AST using Parser/asdl_c.py (original) (raw)

Brett Cannon brett at python.org
Sun May 6 23:50:09 CEST 2007

I am sending this email to make sure people are aware of a possible build problem they might come up against that is unique to Python 3.0 and how to deal with it.

I decided to do a make distclean and rebuild my p3yk checkout. But I came across the error of::

File "./Parser/asdl_c.py", line 744 print(auto_gen_msg, file=f)

Oops. Turns out the Makefile executes 'python' which is 2.4.3 on my machine; joys of bootstrapping the build process with Python. After touching Include/Python-ast.h and Parser/Python-ast.h I got p3yk to build. But to make sure I had the newest auto-generated files I touched Parser/asdl.py and got the same error. Oops again.

So, I took my clean build of Py3K in my checkout and basically did what the Makefile wanted to do, just with the proper Python version::

./python.exe Parser/asdl_c.py -h Include Parser/Python.asdl ./python.exe Parser/asdl_c.py -c Python Parser/Python.asdl

This all came about because I am reviewing Tony Lownds' patch for PEP 3113 which touches both the grammar and the AST. I had to run the above statements in the separate checkout I have for this patch using my pristine copy of the p3yk branch. Then, after a make clean the thing built properly.

Hopefully this won't be a problem with source distributions of Python or else there might be a flurry of emails and such about this error when people really start trying to use Python 3.0.

-Brett -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.python.org/pipermail/python-3000/attachments/20070506/10a05316/attachment.htm

More information about the Python-3000 mailing list