#12868: Attaching a pyx file in the presence of __init__.py results in wrong
module
names
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Reporter: SimonKing | Owner: jason
Type: defect | Status: new
Priority: major | Milestone: sage-5.1
Component: misc | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by leif):
Replying to [comment:4 leif]:
> So I'm pretty sure -- if at all -- ''distutils'' are to blame for the
unexpected behaviour, although it seems quite reasonable to me.
Nope, actually ''Cython'' is causing this, since the following does
'''not''' solve your problem (if it really is one):
{{{
#!diff
diff --git a/sage/misc/cython.py b/sage/misc/cython.py
--- a/sage/misc/cython.py
+++ b/sage/misc/cython.py
@@ -432,6 +432,11 @@
SAGE_ROOT = os.environ['SAGE_ROOT']
SAGE_LOCAL = SAGE_ROOT + '/local/'
+# Remove unwanted link to an __init__.py file from the current directory,
+# i.e., from the temporary build directory only (#12868):
+if os.path.exists("__init__.py"):
+ os.unlink("__init__.py")
+
extra_link_args = ['-L' + SAGE_LOCAL + '/lib']
extra_compile_args = %s
}}}
You can verify that Cython changes the module name depending on whether an
`__init__.py` file is present by
{{{
#!sh
$ sage --sh -c 'cython test.pyx' && grep '^#.*__Pyx_MODULE_NAME' test.c`
}}}
Although it is not yet clear to me how Cython finds the `__init__.py` if I
remove it from the temporary build directory, as there's only the symbolic
link to the "unrelated" original `.pyx` source file, but probably Cython
somehow "knows" about the relation.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12868#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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