[Couenne-tickets] [Couenne, a solver for non-convex MINLP problems] #1: Linkng problem

[Couenne, a solver for non-convex MINLP problems]

#1: Linkng problem
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 Reporter:  bss         |       Owner:  pbelotti
     Type:  defect      |      Status:  assigned
 Priority:  major       |   Milestone:          
Component:  component1  |     Version:          
 Keywords:              |  
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Old description:

> Hi Beata,
>
> negInfinity is *declared* as an extern variable in asl.h, one of the
> include files for the Ampl Solver Library (ASL) used throughout Couenne.
> That variable is *defined* in mach.c, again from the ASL library. It
> should be available in amplsolver.a. See ThirdParty/ASL and documentation
> therein. In principle, if the ASL library is linked with Couenne, all
> should be OK. Can you tell something more about the system where you have
> installed Couenne?
>
> Thanks,
> Pietro
>

> Hi, I am trying to use COIN-OR with Couenne from an external application.
> I have configured, built and installed COIN-OR according to the
> instructions, and all that was reported as successful. However, when I
> invoke my external application, I get the following:
>
>    (E) Failed to load 'libMyApp.so'.
> /home/bss/COIN_OS/lib/libCouenne.so.0: undefined symbol: negInfinity
>
> Could you help me resolve that?
>
> Thanks,
> Beata

New description:

 Hi, I am trying to use COIN-OR with Couenne from an external application.
 I have configured, built and installed COIN-OR according to the
 instructions, and all that was reported as successful. However, when I
 invoke my external application, I get the following:

    (E) Failed to load 'libMyApp.so'.
 /home/bss/COIN_OS/lib/libCouenne.so.0: undefined symbol: negInfinity

 Could you help me resolve that?

 Thanks,
 Beata

--

Comment(by pbelotti):

 Replying to [comment:3 pbelotti]:
 > Hi Beata,
 >
 > now that I look at it more carefully, libCouenne shouldn't even have
 that symbol (negInfinity) as it doesn't use the ASL. However, if you do
 use the ASL, then that symbol is defined, and it should be found by the
 linker. It might be that you just need to re-order the libraries you use
 (the ASL and libCouenne) to build libMyApp. On my side, I'll try to see if
 I can remove that symbol from libCouenne, but any change would be
 reflected in a stable version of Couenne, not the release (0.2.1?) you
 seem to have.
 >
 > Cheers,
 > Pietro
 >
 >
 > Replying to [comment:2 bss]:
 > > Hi Pietro,
 > >
 > > the ASL libraries seem to be included as needed, yet the problem
 persists. I am working on Ubuntu Hardy. I have attached config.log with
 more details for your information.
 > >
 > > Thanks,
 > > Beata

-- 
Ticket URL: <https://projects.coin-or.org/Couenne/ticket/1#comment:4>
Couenne, a solver for non-convex MINLP problems <https://projects.coin-or.org/Couenne>
Couenne, a solver for non-convex MINLP problems