Re: templates
Re: templates
- Subject: Re: templates
- From: "Alastair J.Houghton" <email@hidden>
- Date: Thu, 2 Oct 2003 10:24:42 +0100
On Thursday, October 2, 2003, at 08:52 am, Francisco Tolmasky wrote:
Ok, I'm using objective-C++ so part of my program uses C++ templates.
I have a class structure something like this:
[snip]
The problem is my specialization (primitive<int>). For some reason it
makes an error of "multipel definitions of symbol
primitive<int>::read(char const *). I tried it in Codewarrior and it
did the same thing. I really can't figure it out. I know it's
something that I'm doing wrong with templates and specifically
template specialization but I don't know what! I include
primitive.hpp in several places but I have the inclusion guards. I
read somewhere about multiple instances of templates being global or
something?
ANY help is GREATLY appreciated,
This is really a C++ question, so you would be better off asking in
comp.lang.c++. It sounds to me like the problem is that you have
multiple instantations of your template for some reason, and because of
the linker behaviour on Mac OS X, multiple definitions of the same
symbol are not allowed. The GCC manual has a section that explains the
available options in its case; see
http://developer.apple.com/documentation/DeveloperTools/gcc-3.3/gcc/
Template-Instantiation.html#Template Instantiation
The -frepo or -fno-implicit-template-instantiation flags are probably
what you want, depending on the instantiation model you prefer.
Kind regards,
Alastair.
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| | >templates (From: Francisco Tolmasky <email@hidden>) |