Re: [Fink-devel] C++ issue

[Martin C. <cos...@wa...>]

On 11/09/11 15:36, Alexander Hansen wrote:
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> Hash: SHA1
>
> I'm working on moving LyX (specifically the "lyx2" packages) over to
> Lion, but I've got a C++ issue.
>
> I get the following error from clang:
>
> ...
> In file included from Lexer.cpp:16:
> ./Lexer.h:225:13: error: implicit instantiation of undefined template
>        'std::basic_string<char, std::char_traits<char>,
> std::allocator<char>  >'
>                  t = T(lex.getString());
>                            ^
> ./support/strfwd.h:42:64: note: template is declared here
> template<typename Char, typename Traits, typename Alloc>  class
> basic_string;

There is some noise on google on this kind of things, for example
<http://llvm.org/bugs/show_bug.cgi?id=10521>
which seems to imply that the whole strfwd.h stuff is illegal, but 
tolerated by earlier compilers.

[]
> which I had thought meant that the template _should_ be declared for
> Lexer.h, and thus for Lexer.cpp .

It is declared, but not defined.
I don't know enough C++ to see why they don't simply
#include<string>
before (or instead of) their strfwd.h. What happens if you do this at 
the beginning of strfwd.h?

Otherwise, I suspect this is one of the packages that will need to use 
llvm instead of clang.

-- 
Martin