Subj : Compiler errors when porting libsigc++ (Unix -> BCB)
To   : borland.public.cpp.borlandcpp
From : Jens =?ISO-8859-1?Q?B=E4ckman?=
Date : Mon May 17 2004 02:31 pm

Hi, all.

I'm currently using libsigc++ 2 in a Unix application, and want to use 
the Unix-code inside my Builder application too. So, building it as a 
DLL would be superb.

Now, after installing Cygwin to get access to autoconf and friends, I 
create a new project where *.cc are considered C/C++ files, and all 
files are forced to be considered C++. Hitting Ctrl+F9, and I get errors 
immediately... Here's the code.

------[ functor_trait.h ]------
template <class T_return, class T_obj> class mem_functor0;
template <class T_return, class T_obj> class const_mem_functor0;
template <class T_return, class T_obj>
// Next line is #187. Just to make things clearer.
struct functor_trait<T_return (T_obj::*)(), false>
{
   typedef T_return result_type;
   typedef mem_functor0<T_return, T_obj> functor_type;
};
template <class T_return, class T_obj>
struct functor_trait<T_return (T_obj::*)() const, false>
{
   typedef T_return result_type;
   typedef const_mem_functor0<T_return, T_obj> functor_type;
};
-------------------------------

And the messages...

------[ Warnings/Errors ]------
[C++ Error] functor_trait.h(187): E2272 Identifier expected
[C++ Error] functor_trait.h(187): E2188 Expression syntax
[C++ Error] functor_trait.h(191): E2299 Cannot generate template 
specialization from 'functor_trait<T_functor,I_derives_functor_base>'
[C++ Error] functor_trait.h(197): E2428 Templates must be classes or 
functions
-------------------------------

Anyone who can point me in the right direction here?

.