I have had no problems to generate .dll's using MinGW (significantly more complicated than the demos)
So, I would suggest you post exactly the commands you used in order to produce the .dlls and then load the functions into Mathematica, and I may be able to tell you what is going wrong.
Am 23.06.2012 10:21, schrieb fortgriff: > Does anyone have experience with LibraryLink and MinGW? > > Using LibraryLink, I am able to load functions into Mathematica from > the shipped version of demo.dll. From the source file demo.c, I > generate my own demogcc.dll (using MinGW). Using "objdump -f > xxx.dll", I cannot tell the difference between the two dlls. Both > export what they should and both look like dlls. > > Inside Mathematica, I cannot load functions from demogcc.dll. The > $LibraryError I get is > > Library load error 193: %1 is not a valid Win32 application. > > There are many command line options for the compiler and linker. > Hopefully, there is a combination that works. > Thank you for your help. > MWG >