Hi Steven, Thanks for the quick response.
Using the new .DEF file I was able to use the DLL of version 2.0.2. Another minor issue: libnlop-0.dll in version 2.0.2 depends on mingwm10.dll (unlike version 1.2), so I had to manually find and add that dll to make nlopt run. Regards, Juergen On Jun 21, 2010, at 5:19 PM, Steven G. Johnson wrote: > Hi Juergen, > > It looks like this is a consequence of 2.0.2 using the stdcall calling > convention -- apparently, in that convention, the "@" is appended to the > function name to indicate the size of the argument stack. > > I had noticed this, but had (apparently incorrectly) thought that the @ > didn't belong in the .def file and had stripped it out. > > I have posted a new version of the nlopt-2.0.2-dll.zip file, in which the > .def file includes the names with the @ part included. Please let me know if > this fixes your problem. (The other alternative would be to go back to the > old non-stdcall convention, although that reportedly is incompatible with > .NET.) > > Steven > > On Jun 21, 2010, at 8:31 AM, Jürgen Werner wrote: >> I have problems linking to the DLL of version 2.0.2 and unfortunately also >> only very little experience in using DLLs (or even MS Windows). >> >> The old tutorial example code (from website for 1.2) runs fine in a test >> project >> using DLL 1.2 but generates the following error message in a test project >> that >> uses DLL 2.0.2 but is otherwise the same: >> >> error LNK2019: unresolved external symbol >> __imp__nlopt_minimize_constrai...@96 referenced in function _main >> libtest2.obj >> >> Trying to use one of the new function gives a similar error: >> error LNK2019: unresolved external symbol __imp__nlopt_cre...@8 referenced >> in function [...] >> >> The program 'Dependency Walker' shows for the 1.2 version that the function >> name is >> nlopt_minimize_constrained >> and for version 2.0.2 it is >> nlopt_minimize_constrai...@96 >> >> I know the problem itself might not be NLopt-specific but some naming >> convention thing, >> but since I have not much experience dealing with DLLs, any help is >> appreciated! _______________________________________________ NLopt-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/nlopt-discuss
