Hello everybody !!! I finally wrote the two versions of the LP solver for SAGE, the first using COIN-OR and the second GLPK. It is a very early version of the solver, with few if any control of errors ( feasibility, etc ... ) but it still can be very useful ! My last problem is the following :
The main goal of this class is to be a unified way to access GLPK, COIN, and eventually CPLEX through SAGE. Glpk can be included in SAGE, but COIN-OR cannot for it is GPL-uncompatible. Even though, the MIP class as it is written uses functions from COIN-OR library ( it is written in Cython ), and so needs these libraries to be installed if it is to be compiled at all. This is not a all what we want, as it should work without any installation of COIN. So here is my problem : I have a class that uses librarires that can not be assumed to be installed. How could I detect whether they are, and compile the MIP class accordingly. I'd be really glad if you had an answer to my question, as it is a complete mystery to me ! Thanks Nathann --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
