Re: Adding my own classes to ROOT

Damir Buskulic (buskulic@lapp.in2p3.fr)
Fri, 04 Dec 1998 08:50:52 +0100

Glen R. Salo wrote:
>
> I am having problems adding my own class to ROOT. My sample code compiles,
> but fails on the link. The error message I get is:
>
> /tmp/cca018401.o: In function `IO::ImplFileLine(void)':
> /home/gsalo/root/io.C:20: undefined reference to
> `IO::ShowMembers(TMemberInspector &, char *)'
> /tmp/cca018401.o: In function `IO::IO(void)':
> /home/gsalo/root/io.C:22: undefined reference to
> `IO::Streamer(TBuffer &)'
> collect2: ld returned 1 exit status
>

Did you define a Linkdef.h file ? did you run rootcint ? the methods
ShowMembers and Streamer are automatically generated by rootcint
(provided the linking of the class to root is defined with Linkdef.h,
although it is not mandatory)

Damir

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