installing and compiling the optional package cbc-2.7.5 in sage version 5.9
on a 64 bit ubuntu system yields the following error:
{
Error compiling Cython file:
------------------------------------------------------------
...
if self.prob_name != None:
return self.prob_name
else:
return ""
else:
self.prob_name = name
^
------------------------------------------------------------
sage/numerical/backends/coin_backend.pyx:1090:33: default encoding required
for conversion from 'char *' to 'str object'
Traceback (most recent call last):
File "setup.py", line 531, in <module>
force=force)
File
"/home/mueller/local/sage-5.9/local/lib/python2.7/site-packages/Cython/Build/Dependencies.py",
line 707, in cythonize
pool.map(cythonize_one_helper, to_compile)
File
"/home/mueller/local/sage-5.9/local/lib/python/multiprocessing/pool.py",
line 227, in map
return self.map_async(func, iterable, chunksize).get()
File
"/home/mueller/local/sage-5.9/local/lib/python/multiprocessing/pool.py",
line 528, in get
raise self._value
Cython.Compiler.Errors.CompileError:
sage/numerical/backends/coin_backend.pyx
Error installing modified sage library code.
[wma7104]/home/mueller/local/sage-5.9> ./sage -optional
Using SAGE Server http://www.sagemath.org/packages
}
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