On Fri, Jul 17, 2009 at 9:57 AM, Nathann Cohen<nathann.co...@gmail.com> wrote: > > 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 !
I don't know the answer. However, you might want to look at the thread on frobby. There was a similar question there. William Stein made a comment which might help you. > > 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 -~----------~----~----~----~------~----~------~--~---
