Create a DLL like in Windows

[Mauro_8]

I created a DLL to access ingres database with Visual C++ and I have now to make it portable to HP-UX10.20. With this DLL I send the name of the database and the query and this DLL returns a text file with the result of the query. How can I create the same DLL for HP-UX ? Am I have to compile the source with "cc -Aa" and some more option ? How can I force it to be a dinamic linked library ?

Cheers,
Mauro

[Mark Greene_1]

When you did the dll for the windows environment, was the ingress database also on that windows server, or where you accessing the db on another server via a socket connection or something else like ODBC?

I ask because if the ingress db is actually running on the HP server, you shouldn't need to go through all the trouble of a C program, you should be able to do a simple shell script or stored procedure if this is going to be run locally. If you need to have this proccess run by a client, I'd again look at either a stored procedure for the db on the HP system, or making use of the same type of db connetion on the client (sockets, odbc, jdbc, etc) and using a simliar type of approach from the client side.

HTH
mark

[Steven Gillard_2]

Its unlikely that this is going to be as simple as recompiling on hpux, but you can create a shared library as follows:

1. Create PIC (position independant) object code by using the +z option to the compiler

2. Generate a shared library by using the -b option to the linker (ld).

For more information have a read of the linker and libraries guide:

http://docs.hp.com/hpux/onlinedocs/B2355-90654/B2355-90654.html

Regards,
Steve