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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Dear all,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>after much experimenting i was able to build a reduced version of the libhsl.dll file using Microsoft Visual Studio and the Intel Fortran Compiler. This file only contains the MA27 solver. If I copy this into the same folder as my Ipopt39.dll and try to run my program I get the following error message:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>*** IPOPT OUTPUT<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Exception of type: OPTION_INVALID in file "..\..\..\src\Algorithm\IpAlgBuilder.cpp" at line 319:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Exception message: Selected linear solver MA27 not available.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Tried to obtain MA27 from shared library "libhsl..dll", but the following error occured:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>loadLib error: Do not know how to handle shared libraries on this operating system<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>EXIT: Invalid option encountered.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I am not sure how to interpret this message. What good is a loader for if it does not know how to handle shared libraries? Has anybody encountered this problem running IPOPT on Windows?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Info:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>My Version of IPOPT is 3.11.0 but I had to rename the dll File to be able to load it via the CSIPOPT wrapper provided by Anders Gustafson at Cureos. I have also set the PATH Environment variable to include the current working directory of my program, where all the DLLS are located.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Jochen<o:p></o:p></span></p></div></body></html>