Re: CINT (ROOT v5.30) does not compile class with static const members

Hi,

what Timur meant was that you cannot initialize common_lim in the class declaration. There you should only have

    static const double common_lim; //!

In the implementation test.C you can then initialize it, outside of any function

    const double test::common_lim = 100;

HTH, Benjamin

On Wed, Apr 25, 2012 at 02:02:45PM +0200, Neal Gauvin wrote:
> Hi,
>
> Thanks for your answer.
> What you say would work if I had a non const member...
> But here I have a static const.
>
> Cheers,
>
> Neal
>
>
> Le 25/04/2012 13:56, Timur Pocheptsov a écrit :
> > You have to declare static member in .h (remove initializer) and define it in .C file.
> > ________________________________________
> > From: owner-roottalk_at_root.cern.ch [owner-roottalk_at_root.cern.ch] on behalf of Neal Gauvin [Neal.Gauvin_at_unige.ch]
> > Sent: 25 April 2012 13:46
> > To: roottalk (Mailing list discussing all aspects of the ROOT system.)
> > Subject: [ROOT] CINT (ROOT v5.30) does not compile class with static const members
> >
> > Hi,
> >
> > I wrote a class, which contains a static const member.
> > The class compiles finely with g++, but CINT fails to compile it.
> >
> > Info in<TUnixSystem::ACLiC>: creating shared library
> > /home/gauvin/Polar/europe_svn/trunk/include/./test_C.so
> > dlopen error: /home/gauvin/Polar/europe_svn/trunk/include/./test_C.so:
> > undefined symbol: _ZN4test10common_limE
> > Load Error: Failed to load Dynamic link library
> > /home/gauvin/Polar/europe_svn/trunk/include/./test_C.so
> > /usr/lib/gcc/x86_64-redhat-linux/4.6.3/../../../../lib64/crt1.o: In
> > function `_start':
> > (.text+0x20): undefined reference to `main'
> > /home/gauvin/Polar/europe_svn/trunk/include/test_C_ACLiC_dict.o: In
> > function `G__setup_memvartest()':
> > test_C_ACLiC_dict.cxx:(.text+0xde3): undefined reference to
> > `test::common_lim'
> > collect2: ld a retourné 1 code d'état d'exécution
> >
> > You can find the demo class in attachment.
> > I am using ROOT version 5.30.
> > The same code is found to work on ROOT version v5.26
> >
> > Does somebody have any Idea what goes wrong ?
> >
> > Thanks in advance,
> >
> > Neal
> >
> > --
> > _______________________________________________
> >
> > Dr. Neal Gauvin
> > E-mail neal.gauvin_at_a3.epfl.ch
> > -----------------------------------------------
> > Data Centre for Astrophysics (ISDC)
> > Chemin d'Ecogia 16
> > CH-1290 Versoix
> > Phone : +41 22 379 2108
> > _______________________________________________
> >
>
>
> --
> _______________________________________________
>
> Dr. Neal Gauvin
> E-mail neal.gauvin_at_a3.epfl.ch
> -----------------------------------------------
> Data Centre for Astrophysics (ISDC)
> Chemin d'Ecogia 16
> CH-1290 Versoix
> Phone : +41 22 379 2108
> _______________________________________________
>

-- 
"Good judgment comes from experience. Experience comes from bad judgment."






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