[Coin-ipopt] Ipopt works with Matlab... almost!

[Peter Carbonetto]

After a considerable amount of head-scratching and strong orange pekoke 
teas, I managed to compile the IPOPT Library so that it works with Matlab 
7.3 for Linux. Matlab only likes gcc 3.4.5 and position-independent code I 
discovered.

It all works beautifully in Matlab on the provied Hock & Schittkowski test 
problem #71, arriving at the solution... until it dramatically crashes 
Matlab. Since it only crashes at the very end, it means that there is 
something strange happening in one of the object destructors. From the 
output Matlab gives me (see below), it appears to be something wrong 
either with the destruction of a SmartPtr object or in the function call 
ReleasePointer().

I would dearly like to get this working with Matlab. Any suggestions or 
leads?

Peter Carbonetto
PhD Candidate
Dept. of Computer Science
University of British Columbia
http://www.cs.ubc.ca/~pcarbo

   [0] 0x00000011(0x0857c330, 0xb2bef830, 0xbfa7b3d8, 0xb2a69138)
   [1] libipopt.so.0:Ipopt::SmartPtr<Ipopt::TNLP>::~SmartPtr()~(0x0857c330, 
0xb74c8140, 0x085840a8, 0xb75c075c) + 29 bytes
   [2] libipopt.so.0:Ipopt::TNLPAdapter::~TNLPAdapter()~(0x0857c328, 
0x0857c47c, 0xbfa7b408, 0xb740fa64) + 1370 bytes
   [3] 
libipopt.so.0:Ipopt::SmartPtr<Ipopt::NLP>::ReleasePointer_()~(0x0857c47c, 
0xb2bef830, 0xbfa7b438, 0xb2ab0501) + 93 bytes
   [4] libipopt.so.0:Ipopt::SmartPtr<Ipopt::NLP>::~SmartPtr()~(0x0857c47c, 
0xb2bef830, 0xbfa7b428, 0xb2a4dd21) + 29 bytes
   [5] 
libipopt.so.0:Ipopt::GradientScaling::~GradientScaling()~(0x0857c450, 
0x0857c498, 0x085819d0, 0xb75c075c) + 47 bytes
   [6] 
libipopt.so.0:Ipopt::SmartPtr<Ipopt::NLPScalingObject>::ReleasePointer_()~(0x0857c498, 
0xb2bef830, 0xbfa7b498, 0xb2b02ed7) + 93 bytes
   [7] 
libipopt.so.0:Ipopt::SmartPtr<Ipopt::NLPScalingObject>::~SmartPtr()~(0x0857c498, 
0x0857c49c, 0, 0xb75c075c) + 29 bytes
   [8] libipopt.so.0:Ipopt::IpoptNLP::~IpoptNLP()~(0x0857c490, 0xb74c8140, 
0x0857d020, 0xb75c075c) + 47 bytes
   [9] libipopt.so.0:Ipopt::OrigIpoptNLP::~OrigIpoptNLP()~(0x0857c490, 
0x0857dbec, 0xbfa7b4e8, 0xb759ab21) + 1688 bytes
   [10] 
libipopt.so.0:Ipopt::SmartPtr<Ipopt::IpoptNLP>::ReleasePointer_()~(0x0857dbec, 
0xb2bef830, 0xbfa7b528, 0xb2a7c8ad) + 93 bytes
   [11] 
libipopt.so.0:Ipopt::SmartPtr<Ipopt::IpoptNLP>::~SmartPtr()~(0x0857dbec, 
0x0857dbfc, 0xbfa7b518, 0xb759ab21) + 29 bytes
   [12] 
libipopt.so.0:Ipopt::AlgorithmStrategyObject::~AlgorithmStrategyObject()~(0x0857dbe0, 
0xbfa7b590, 0xbfa7b558, 0xb74c8148) + 129 bytes
   [13] libipopt.so.0:Ipopt::IpoptAlgorithm::~IpoptAlgorithm()~(0x0857dbe0, 
0x08567354, 0xbfa7b590, 0) + 378 bytes
   [14] 
libipopt.so.0:Ipopt::SmartPtr<Ipopt::IpoptAlgorithm>::ReleasePointer_()~(0x08567354, 
0xb2bef830, 0xbfa7b5b8, 0xb2a563f1) + 93 bytes
   [15] 
libipopt.so.0:Ipopt::SmartPtr<Ipopt::IpoptAlgorithm>::~SmartPtr()~(0x08567354, 
0xbfa7bf10, 0xbfa7b5a8, 0xb759ab21) + 29 bytes
   [16] 
libipopt.so.0:Ipopt::IpoptApplication::~IpoptApplication()~(0x08567338, 
0xbfa7b610, 0xbfa7b620, 1) + 211 bytes