The gurobi backend does not seem to get built in Sage-5.9 under Mac OS X
10.6.8. I'm running sage-5.9-OSX-64bit-10.6-x86_64-Darwin-app. I have
gurobi461 (the last version for OS 10.6.8). It works in Sage-5.7 (after
the installation method described below).
I copied from Sage-5.7 to Sage-5.9 the links
Contents/Resources/sage/local/{lib/libgurobi.so,include/gurobi_c.h}. Then,
in Contents/Resources/sage/, I ran './sage -b'. The output contained no
mention of gurobi.
When I run Sage-5.9 and attempt to use solver="Gurobi" I get "ImportError:
No module named gurobi_backend." (The corresponding installation of CPLEX
works fine in Sage-5.9.)
Daniel Friedan
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