[Clp] Error when building project with CLP using C++ and XCode.

[Jesse Jaanila]

Hi!

I've had success using CLP via Julia JuMP API, but now i'm trying to use
C++ for faster model building (column generation scheme).

I'm on Mac OS X El Capitan with newest XCode and command line tools. I
built CLP 1.16 as described on
https://projects.coin-or.org/Clp with make, make test and make install.
Everything went fine and installation was successful.

I am trying to build one of the examples; specifically
https://projects.coin-or.org/Clp/browser/trunk/Clp/examples/addColumns.cpp
to fiddle around with the C++ API.

I set up search paths for header files and libraries (see picture link) for
my project.

https://i.imgur.com/FdSdNNR.png

This got away error "ClpSimplex.hpp file not found". So I was really
hopeful that that is all the configurating I need to do.

But still my build fails. My error log is (main.cpp is my project file
name):

*Undefined symbols for architecture x86_64:*

  "ClpSimplex::loadProblem(CoinModel&, bool)", referenced from:

      _main in main.o

  "ClpSimplex::setRowLower(int, double)", referenced from:

      _main in main.o

  "ClpSimplex::setRowUpper(int, double)", referenced from:

      _main in main.o

  "ClpSimplex::initialSolve()", referenced from:

      _main in main.o

  "ClpSimplex::allSlackBasis(bool)", referenced from:

      _main in main.o

  "ClpSimplex::dual(int, int)", referenced from:

      _main in main.o

  "ClpSimplex::resize(int, int)", referenced from:

      _main in main.o

  "ClpSimplex::readMps(char const*, bool, bool)", referenced from:

      _main in main.o

  "ClpSimplex::ClpSimplex(ClpSimplex const&, int)", referenced from:

      _main in main.o

  "ClpSimplex::ClpSimplex(bool)", referenced from:

      _main in main.o

  "ClpSimplex::~ClpSimplex()", referenced from:

      _main in main.o

  "ClpSimplex::operator=(ClpSimplex const&)", referenced from:

      _main in main.o

  "ClpModel::addColumns(CoinModel&, bool, bool)", referenced from:

      _main in main.o

  "ClpModel::addColumns(CoinBuild const&, bool, bool)", referenced from:

      _main in main.o

  "ClpModel::deleteColumns(int, int const*)", referenced from:

      _main in main.o

  "ClpModel::addRows(int, double const*, double const*,
CoinPackedVectorBase const* const*)", referenced from:

      _main in main.o

  "ClpModel::addColumn(int, int const*, double const*, double, double,
double)", referenced from:

      _main in main.o

  "CoinBuild::addColumn(int, int const*, double const*, double, double,
double)", referenced from:

      _main in main.o

  "CoinBuild::CoinBuild()", referenced from:

      _main in main.o

  "CoinBuild::~CoinBuild()", referenced from:

      _main in main.o

  "CoinModel::setRowBounds(int, double, double)", referenced from:

      _main in main.o

  "CoinModel::addColumn(int, int const*, double const*, double, double,
double, char const*, bool)", referenced from:

      _main in main.o

  "CoinModel::CoinModel()", referenced from:

      _main in main.o

  "CoinModel::~CoinModel()", referenced from:

      _main in main.o

ld: symbol(s) not found for architecture x86_64

*clang: error: linker command failed with exit code 1 (use -v to see
invocation)*

Sadly i'm still quite new to C++ so I haven't been able to pinpoint what
the problem is. Could it be something trivial? Do I need something else
when building C++ project with CLP other than search setup for
Header/Library paths? Maybe someone else has had similar problem with mac
os x & XCode.

Any ideas are helpful! Cheers,

Jesse
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