[FlopCpp] FlopCpp Digest, Vol 51, Issue 1

Fri Feb 27 02:09:03 EST 2015

I haven’t worked on it for many years, but it still works and I do try to answer in case there are questions.

Cheers, Tim

From: flopcpp-bounces at list.coin-or.org [mailto:flopcpp-bounces at list.coin-or.org] On Behalf Of Alan King
Sent: Thursday, February 26, 2015 6:58 PM
To: flopcpp at list.coin-or.org
Subject: Re: [FlopCpp] FlopCpp Digest, Vol 51, Issue 1

Hi Antonello

Flopcpp is basically archived.  Tim Hultberg stopped working on it a while ago.

Your question might get a response if you posted it in the clp forum.

Alan

-------------------------------------------------------
Alan King
Research Staff Member
Business Solutions & Mathematical Sciences
IBM Thomas J. Watson Research Center
914 945 1236 (o)  914 260 9888 (m)

[cid:image001.gif at 01D05264.89124EB0]flopcpp-request---2015-02-26 12:34:04 PM---Send FlopCpp mailing list submissions to  flopcpp at list.coin-or.org<mailto:flopcpp at list.coin-or.org>

From: flopcpp-request at list.coin-or.org<mailto:flopcpp-request at list.coin-or.org>
To: flopcpp at list.coin-or.org<mailto:flopcpp at list.coin-or.org>
Date: 2015-02-26 12:34 PM
Subject: FlopCpp Digest, Vol 51, Issue 1
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Today's Topics:

  1. How to compile examples? (Antonello Lobianco (not reply))
  2. Is this project still alive ? (Antonello Lobianco (not reply))

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Message: 1
Date: Thu, 26 Feb 2015 14:23:25 +0100
From: "Antonello Lobianco (not reply)" <blackhole at lobianco.org<mailto:blackhole at lobianco.org>>
To: flopcpp at list.coin-or.org<mailto:flopcpp at list.coin-or.org>
Subject: [FlopCpp] How to compile examples?
Message-ID:
<CAOibvJHAjGyu2N=T-nT906EUhcqoxEHELg_SJa5zq0U1zRa2nA at mail.gmail.com<mailto:CAOibvJHAjGyu2N=T-nT906EUhcqoxEHELg_SJa5zq0U1zRa2nA at mail.gmail.com>>
Content-Type: text/plain; charset="utf-8"

Hello to all.
I just installed FlopC++ in Linux (Ubuntu 14:04 64 bit if that matter)
using prefix=/usr in configure.
Running "make test" seems to work without issues.

I am now trying to get a independent manual compilation of the
transport.cpp example[1] but I end up with a serie of undefined references
from ld.

The command I run to try to compile transport.cpp is:

g++ -I /usr/include/coin transport.cpp -lCoinUtils -lOsi -lClp
-lClpSolver -lOsiClp -lOsiCommonTests -lCbc -lCbcSolver -lCgl -lOsiCbc
-lFlopCpp -o transport

The output is:
lobianco at lobianco-officeLaptopLatitude:~/temp/flop++$ g++ -I
/usr/include/coin transport.cpp -lCoinUtils -lOsi -lClp -lClpSolver
-lOsiClp -lOsiCommonTests -lCbc -lCbcSolver -lCgl -lOsiCbc -lFlopCpp -o
transport
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpSimplex::deleteRim(int)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpSimplex::setInfeasibilityCost(double)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpSimplex::cleanup(int)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpSimplex::loadProblem(ClpMatrixBase const&, double const*,
double const*, double const*, double const*, double const*, double const*)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpPresolve::~ClpPresolve()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `OsiSolverInterface::reducedCostFix(double, bool)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpSimplex::checkSolutionInternal()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpModel::times(double, double const*, double*) const'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpSimplex::checkPrimalSolution(double const*, double const*)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpSolve::operator=(ClpSolve const&)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `OsiSolverInterface::getRowNames()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `OsiRowCut::ub() const'
[...]
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpNodeStuff::zap(int)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOsiClp.so: undefined
reference to `ClpSimplex::resize(int, int)'
collect2: error: ld returned 1 exit status

Also, I have installed on my system glpk. Is there any significant gain in
using glpk vs OsiClp as backend solver engine ? If so, how should I change
the compilation command and the c++ source in order to use glpk ?

Many thanks,
 Antonello Lobianco, Laboratoire d'Economie Foresti?re, Nancy

[1]
https://projects.coin-or.org/svn/FlopC++/stable/1.2/FlopCpp/examples/transport.cpp

--
Antonello Lobianco
Spedito da un indirizzo non presenziato - Sent from an unattended account
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Message: 2
Date: Thu, 26 Feb 2015 14:55:59 +0100
From: "Antonello Lobianco (not reply)" <blackhole at lobianco.org<mailto:blackhole at lobianco.org>>
To: flopcpp <flopcpp at list.coin-or.org<mailto:flopcpp at list.coin-or.org>>
Subject: [FlopCpp] Is this project still alive ?
Message-ID:
<CAOibvJFtPHYE12rYFGBOxwDU5YwqYVonsj=jSmt3t90wvEyyUg at mail.gmail.com<mailto:CAOibvJFtPHYE12rYFGBOxwDU5YwqYVonsj=jSmt3t90wvEyyUg at mail.gmail.com>>
Content-Type: text/plain; charset="utf-8"

Hello,
I was planning to start a new project using FlopC++ but I wander if this
project is still alove.. I see that a new version has been just released,
but the mailing list is dead by several years.. is there some other way to
comunicate, e.g. is there a google group or a forum that it's not linked
from the project page ?

Regards,
 Antonello Lobianco

--
Antonello Lobianco
Spedito da un indirizzo non presenziato - Sent from an unattended account
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