#20632: Docs build crashes on Cygwin
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Reporter: embray | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-7.3
Component: porting: Cygwin | Keywords: windows cygwin docbuild
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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I'm trying to build the docs on Cygwin and am getting a consistent crash
at:
{{{
... building other docs ...
Build finished. The built documents can be found in
/home/embray/src/sagemath/sage/local/share/doc/sage/inventory/en/reference/arithgroup
0 [main] python 1856 fork: child -1 - forked process 3808 died
unexpectedly, retry 0, exit code 0xC0000005, errno 11
Error building the documentation.
Traceback (most recent call last):
File "/home/embray/src/sagemath/sage/local/lib/python/runpy.py", line
162, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "/home/embray/src/sagemath/sage/local/lib/python/runpy.py", line
72, in _run_code
exec code in run_globals
File "/home/embray/src/sagemath/sage/local/lib/python2.7/site-
packages/sage_setup/docbuild/__main__.py", line 2, in <module>
main()
File "/home/embray/src/sagemath/sage/local/lib/python2.7/site-
packages/sage_setup/docbuild/__init__.py", line 1638, in main
builder()
File "/home/embray/src/sagemath/sage/local/lib/python2.7/site-
packages/sage_setup/docbuild/__init__.py", line 284, in _wrapper
getattr(get_builder(document), 'inventory')(*args, **kwds)
File "/home/embray/src/sagemath/sage/local/lib/python2.7/site-
packages/sage_setup/docbuild/__init__.py", line 504, in _wrapper
x.get(99999)
File
"/home/embray/src/sagemath/sage/local/lib/python/multiprocessing/pool.py",
line 567, in get
raise self._value
EnvironmentError: pkg-config is not installed
}}}
`0xC0000005` is apparently an access violation. Not clear yet where it's
coming from, but it's probably a Cygwin bug. The reference to "pkg-
config" is especially bizarre.
I'm experimenting with a patch so that if `SAGE_NUM_THREADS=1` the doc
build doesn't use multiprocessing *at all* and that seems to be working.
So that might be a worthwhile patch to add anyways.
Then, with such a patch, I can further modify things so that
`NUM_THREADS=1` is forced on Cygwin, just as a workaround until and unless
I can get to the root of the problem.
--
Ticket URL: <http://trac.sagemath.org/ticket/20632>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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