Error 7 occured while importing Shared Object

[H P]

Hello,

I have Linux 2009 LV running on 64 bit linux machine(SuSe 11.1). I am trying to import a shared object, but I am not able to. I get Error 7 each time I try.

"

Error 7: Call Library Function Node in libtest.lvlib:sub.vi

"

I am creating a shared object for a simple Subtraction (a-b = c). The library that I am importing is a 32-bit library. I am creating one by using the -m32 option, so it should be compatible with the 32 bit LV.

I am attaching here the files that I am using, including the makefile and the .cpp and the .h file required to create the shared object, present in filesReqToImportShObj.tgz

I am also including the Project file, and the Report generated.

Please advise what can be done. I am facing this problem since long.

-H

[H P]

Thank you.

I got it working. All I had to do was to add to my .h file:

#ifdef __cplusplus
extern "C" {
#endif

//function defination

#ifdef __cplusplus
}
#endif

-H

[larshana]

soory i did nt understand.. i too have the same problem..want to call a .so file in 32 bit labview linux version,but the shared lib or .so or .o file is in 64 bit version.so is it possible to call?

[rolfk]

No it isn't directly! What you would need to do is to write a 64 bit application in C that calls that shared library and offers an IPC (Interprocess Communication) interface such as shared memory or unix pipes or network sockets to communicate with your 32 bit LabVIEW program.

[kentyman]

rolfk is right. This was also discussed in this thread.

[Luyanda]

Hi

m getting that error 7, how did you add that h.file?

[Luyanda]

Hi

M getting error 7, is see you said you added h.file. how do you add it?