RE: templates with gcc 2.95.2 for sh4

["Alex Holland" <alexh4912 at yahoo dot com>]

I instantiated this way:

template class Whatever<int>;


Alex Holland
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-----Original Message-----
From: Alexander Gdalevich [mailto:gdalevich@hotmail.com] 
Sent: Friday, April 05, 2002 7:17 PM
To: alexh4912@yahoo.com
Subject: RE: templates with gcc 2.95.2 for sh4


Thanks a lot.

Please tell me, what syntax did you use?

Did you just prototyped the methods like this:

in .h file
-----------------------

template<typename T>
class Whatever {

};

template<typename T>
void Whatever<T>::SomeMethod(){ ... }
----------------------------------

in .cpp file
----------------------------------

class Whatever<int>;

void Somefunction(Whatever<int> &);

----------------------------------

I tried that and it did not work.


>From: "Alex Holland" <alexh4912@yahoo.com>
>To: <crossgcc@sources.redhat.com>
>Subject: RE: templates with gcc 2.95.2 for sh4
>Date: Fri, 5 Apr 2002 15:31:15 -0800
>
>
>For a 68K target, I have successfully used the -fno-implicit-templates
>option and then explicitly instantiated the templates in a file called
>templates.cpp and linked to it. I remember having some grief with the
>other options.
>
>Alex
>
>-----Original Message-----
>From: crossgcc-owner@sources.redhat.com
>[mailto:crossgcc-owner@sources.redhat.com] On Behalf Of Alexander
>Gdalevich
>Sent: Friday, April 05, 2002 2:20 PM
>To: crossgcc@sources.redhat.com
>Subject: templates with gcc 2.95.2 for sh4
>
>Hello!
>
>I am not sure I am posting this on the right board, that is I am not
>certain
>this is a generic gcc problem, or cross-gcc problem, so please direct
me
>
>elsewhere if you know a more appropriate newsgroup.
>
>I am trying to compile a program using gcc 2.95.2 compiler for sh4
>platform
>(win32/cygwin host).
>
>The problem is the way compiler handles C++ templates.  For some reason
>it
>inlines all functions even if they are not declared inline or even if
>they
>are not written inside the class definition.
>
>GCC manual section 5.5 describes several ways of compiling templates.
>
>First opton is to compile with -frepo option.  In this case compiler
>will
>generate *.rpo files with all template instantiations.  Than, collect2
>will
>update *.rpo files and tell the compiler to rebuild any affected object
>files.
>
>I can't however use this, for we don't call collect2, but use our own
>link
>script.
>
>Second option is to comile code with -fno-implicit-templates to disable
>the
>implicit generation of template instances.  The programmer than
required
>to
>explicitly instantiate all the templates used, but even if I do that, I
>get
>link errors.
>
>I don't want to use #pragma interface and #pragma implementation tags
>because they are deprecated, but I tried them anyway and I get link
>errors.
>
>Also tried -falt-external-templates, but could not get my code to link
>either.
>
>Any ideas?
>
>
>
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