Ned Deily added the comment:
Python-ast.c is a generated file. As released, a Python source tarball should
contain an up-to-date version that does not need to be regenerated. However, if
the timestamps of the source files are not preserved, the Makefile may think it
is out of date and try to regenerate it. The regeneration step requires a
working Python compiler so you may run into a bootstrap issue if there is none
on the system. If you obtain the source using a Mercurial checkout, hg does
not attempt to set timestamps on the source files so you are even more likely
to run into problems in that case. Usually, the solution is to do a clean
checkout or tarball extraction, then manually "touch" the files that
Python-ast.c is built from:
touch Include/Python-ast.h Python/Python-ast.c
The newly-released Python 2.7.4 includes a "make touch" target in the Python
Makefile just for this purpose, see Issue16004 and a number of other changes to
help make this area more robust, for example, when building with a BUILDIR
separate from SRCDIR.
----------
nosy: +ned.deily
resolution: -> out of date
stage: -> committed/rejected
status: open -> pending
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<http://bugs.python.org/issue17649>
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