topic Re: aCC link problem - 'Duplicate symbol' in Operating System - HP-UX

aCC link problem - 'Duplicate symbol'

Peter Godron — Thu, 17 Apr 2003 09:04:47 GMT

S/w :
aCC: HP ANSI C++ B3910B A.03.30
ld: 92453-07 linker linker ld B.11.25 010129
On linking multiple objects together into an executable I get :
/usr/ccs/bin/ld: Duplicate symbol "sqlca" in files and < objectfile2>.
I believe there was a problem with duplicate linking??
Any help is greatly appreciated.

Re: aCC link problem - 'Duplicate symbol'

Umapathy S — Thu, 17 Apr 2003 09:56:13 GMT

hi Peter,
Duplicate Symbols represent definition of the variables done in more than two places.
Try to define it in one file and make that variable extern in another file. The best way is declare in a header file and include that header file in the source files.

Hope I am understanding the problem correctly.

cheers
Umapathy

Re: aCC link problem - 'Duplicate symbol'

Adam J Markiewicz — Thu, 17 Apr 2003 10:03:47 GMT

Why do I have impression you're working with ProC precompiler? ;)

Haven't touched it for ages. But as far as I remember there should be an option of the type of added code. One option was to use global objects (one of them was 'sqlca' - and that you must be using). I think the other was making the objects automatic on stack. This one should be used.

Good luck
Adam

Re: aCC link problem - 'Duplicate symbol'

Peter Godron — Thu, 17 Apr 2003 10:06:52 GMT

The problem is not with the symbols. The same code compiles ok on 10.20 with ANSIc. The files are Pro*C programs, containing SQL;so removing the definition into one file is not an option.

Re: aCC link problem - 'Duplicate symbol'

Peter Godron — Thu, 17 Apr 2003 10:07:22 GMT

The problem is not with the symbols. The same code compiles ok on 10.20 with ANSIc. The files are Pro*C programs, containing SQL;so removing the definition into one file is not an option. I suspect the code is being loaded twice.

Re: aCC link problem - 'Duplicate symbol'

Adam J Markiewicz — Thu, 17 Apr 2003 10:42:02 GMT

The problem IS with duplicate symbol. To be precise - with 'sqlca' object added by ProC.
The ANSIc on 10.20 handles problem with duplicate symbols differently.

Just pay more attention to my earlier advice about options in ProC.

Good luck
Adam

Re: aCC link problem - 'Duplicate symbol'

Peter Godron — Wed, 23 Apr 2003 14:36:05 GMT

Solution:
Version of aCC 03.30 and its associated linker has a feature JAGad39135, where enums are made global.
Fix: Update to at least 03.33

Re: aCC link problem - 'Duplicate symbol'

Umapathy S — Wed, 23 Apr 2003 15:00:56 GMT

Never knew this Peter. Thanks for posting the solution to the forums.

Umapathy

Re: aCC link problem - 'Duplicate symbol'

ranganath ramachandra — Sat, 17 May 2003 06:17:35 GMT

the new linker option "+allowdups" may help.
the symbol will resolve to the first symbol definition.
it is available with the latest linker (PHSS_28434/PHSS_28436 : B.11.36).