DLL import failing

[dexterlagan]

Hi folks,



  First post ever. I'm attempting to compile the Genann neural network library into a DLL for import into newLISP.



https://github.com/codeplea/genann">https://github.com/codeplea/genann



  I updated the C source and its header to comply with either STDCALL or CDECL conventions (tried both with no success). I tried several methods to output a DLL out of the C source, which all work fine except when importing in newLISP. The methods I tried are described here :



https://www.transmissionzero.co.uk/computing/building-dlls-with-mingw/">https://www.transmissionzero.co.uk/comp ... ith-mingw/">https://www.transmissionzero.co.uk/computing/building-dlls-with-mingw/



  I checked the exports using Dependency Walker, and all functions are exported correctly (at least when using CDECL, somehow the STDCALL one still showed up as a C export.

No matter what I do newLISP returns the usual import error when attempting to import the DLL :



ERR: problem loading library in function import : "genann.dll"



My import line :



(import "genann.dll" "genann_init")     (when stdcall)

or

(import "genann.dll" "genann_init" "cdecl")



  I tried using the absolute path (with slashes) to the DLL, as well as both calling conventions, to no avail.

I tried compiling the DLL both with gcc straight to DLL (-shared etc.) and through mingw's dllwrapper, to the same result. The DLL file I'm getting seems legit, and I have no problem importing it from C.



Has anybody encountered this problem?



Thanks in advance!



Dexter

[dexterlagan]

I figured it out. Lutz pointed out I was using the 32 bits version of MingW, with the 64 bits version of newLISP. All I had to do is :



1) install MingW64

2) compile the genann source with:

    gcc -m64 genann.c -shared -o genann.dll



Cheers,



Dexter