[SCIP] HSL library for IPOPT=true option

[Shigiltchoff, Oleg]

I'm trying to use SCIP in our c++ library. I am compiling (suse linux) with IPOPT=true option to activate LAPACK (fortran library). After installing libgfortran.so.3,the linking gives the following error (see below). Apparently I need libhsl.so library, which is available at https://github.com/casadi/casadi/wiki/Obtaining-HSL. Now, the question is if I need HSL production license? Our company (SAP) has SCIP license for OFL (our SAP product), but they don't use LAPACK. So, if HSL is part of SCIP, how do I obtain libhsl.co library?

Original Problem:
STATISTICS
  Problem name     : problem1
  Variables        : 5 (0 binary, 0 integer, 0 implicit integer, 5 continuous)
  Constraints      : 0 initial, 2 maximal
OBJECTIVE
  Sense            : minimize
VARIABLES
  [continuous] <x1>: obj=0, original bounds=[-3,3]
  [continuous] <x2>: obj=0, original bounds=[-3,3]
  [continuous] <x3>: obj=0, original bounds=[-3,3]
  [continuous] <x4>: obj=0, original bounds=[-3,3]
  [continuous] <obj>: obj=1, original bounds=[-inf,+inf]
CONSTRAINTS
  [linear] <constrj>:  -0.103111371376616<x1>[C] -0.0918254105621112<x2>[C] -0.0360826398483436<x3>[C] +0.0683195483527113<x4>[C] >= -1;
  [quadratic] <constrm>:  +13.1200771409643<x1>[C] +57.2279181564708<x1>[C]^2 +3.95909498225939<x2>[C] +53.2052128347995<x2>[C]^2 +23.5748721949639<x3>[C] +51.4737147305889<x3>[C]^2 +23.2133345748624<x4>[C] +41.831859605578<x4>[C]^2 -<obj>[C] +95.7868558769789<x1>[C]<x2>[C] +91.0132323375585<x1>[C]<x3>[C] +67.4959089332421<x1>[C]<x4>[C] +97.4849344358596<x2>[C]<x3>[C] +74.6177976486421<x2>[C]<x4>[C] +79.4290929005315<x3>[C]<x4>[C] <= 0;
END

Solving...
feasible solution found by trivial heuristic after 0.0 seconds, objective value 0.000000e+00
presolving:
(round 1, fast)       0 del vars, 1 del conss, 0 add conss, 1 chg bounds, 0 chg sides, 0 chg coeffs, 0 upgd conss, 0 impls, 0 clqs
(round 2, fast)       0 del vars, 1 del conss, 0 add conss, 2 chg bounds, 0 chg sides, 0 chg coeffs, 0 upgd conss, 0 impls, 0 clqs
presolving (3 rounds: 3 fast, 1 medium, 1 exhaustive):
 0 deleted vars, 1 deleted constraints, 0 added constraints, 2 tightened bounds, 0 added holes, 0 changed sides, 0 changed coefficients
 0 implications, 0 cliques
presolved problem has 5 variables (0 bin, 0 int, 0 impl, 5 cont) and 1 constraints
      1 constraints of type <quadratic>
Presolving Time: 0.00
transformed 1/2 original solutions to the transformed problem space
Exception of type: OPTION_INVALID in file "IpAlgBuilder.cpp" at line 271:
 Exception message: Selected linear solver MA27 not available.
Tried to obtain MA27 from shared library "libhsl.so", but the following error occured:
libhsl.so: cannot open shared object file: No such file or directory
[src/nlpi/nlpi_ipopt.cpp:1110] ERROR: Ipopt returned with application return status -12
[src/nlpi/nlpi.c:503] ERROR: Error <0> in function call
[src/scip/cons_quadratic.c:7117] ERROR: Error <0> in function call
[src/scip/cons_quadratic.c:7286] ERROR: Error <0> in function call
[src/scip/cons_quadratic.c:10662] ERROR: Error <0> in function call
[src/scip/cons.c:2623] ERROR: Error <0> in function call
[src/scip/set.c:4559] ERROR: Error <0> in function call
[src/scip/scip.c:13864] ERROR: Error <0> in function call
[src/scip/scip.c:14650] ERROR: Error <0> in function call
[../../AFL/SCAL/EDS/optimize.cpp:233] ERROR: Error <0> in function call
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