I also got this error this afternoon:
$ sage -b
Forcing sage-location, probably because a new package was installed.
Updating various hardcoded paths...
(Please wait at most a few minutes.)
DO NOT INTERRUPT THIS.
Done updating paths.
----------------------------------------------------------
sage: Building and installing modified Sage library files.
Installing c_lib
g++ -o libcsage.so -shared src/convert.os src/interrupt.os src/memory.os
src/mpn_pylong.os src/mpz_pylong.os src/mpz_longlong.os src/stdsage.os
src/gmp_globals.os src/ZZ_pylong.os src/ntl_wrap.os
-L/home/clinton/sage/local/lib
-L/home/clinton/sage/local/lib/python2.7/config -lntl -lpari -lgmp
-lpython2.7
Updating Cython code....
Compiling sage/numerical/backends/coin_backend.pyx because it changed.
Cythonizing sage/numerical/backends/coin_backend.pyx
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/clinton/sage/local/lib/python2.7/site-packages/Cython/Build/Dependencies.py",
line 707, in cythonize
pool.map(cythonize_one_helper, to_compile)
File "/home/clinton/sage/local/lib/python/multiprocessing/pool.py", line
227, in map
return self.map_async(func, iterable, chunksize).get()
File "/home/clinton/sage/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.
On Wednesday, May 8, 2013 6:42:27 AM UTC-7, Peter Mueller wrote:
>
> 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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