CODEWITHSUNDEEP
cxmldllvisual-studio-2013labview
SaphirCES
SaphirCES

Reputation: 29

Compiling a C dll for 64 bits

My problem is about trying to compile a C dll and its dependency to 64bits and to use it in LabVIEW.

To start with the beginning, I'm using a 32 bit LabVIEW toolkit to use XML files (downloaded from here ). This toolkit is using 32 dll dlls that works fine (libxml, libxslt, iconv, zlib, and a wrapper dll IXMLWrap)

Now, I want to use it with 64 bits version of LabVIEW. The LabVIEW part of that migration should not be a problem, but first of all, I have to get 64 bits version of the dlls.
I downloaded the 64 bits versions, except for IXMLWrap (specific one). But I have the .c file of that wrapper.

So I tried to compile it with visual studio, and successed ... almost ! I get a home compiled 64bit IXMLWrap dll, but impossible to load it with LabVIEW 64 bits...
When reading the dll with "Dependency Walker" 64bits, I get some errors about missing export functions.
Indeed, when I compare the 32 and 64 bits dlls with Dependency Walker, I do have the same functions in the dlls, but do not have the same exported functions ... (sorry I'd like to post images of that but not enough reputation...

Does someone have some hint about what is the problem with my IXMLWrap dll : incorrect downloaded dlls, problems in the configuration of my Visual studio project, ... ?

Upvotes: 0

Views: 117

Answers (1)

SaphirCES
SaphirCES

Reputation: 29

OK, it's all my fault... I did the link with .lib files ... coming from linux (not windows)!! No problems then to compile and use the 64bits dll

Upvotes: 1

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