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From Thorsten Schöning <tschoen...@am-soft.de>
Subject error while linking with std::basic_string<...>::basic_string<...>(...)
Date Mon, 31 May 2010 14:15:01 GMT

I have to challenge the inclusion of Log4cxx in out projects based on
an old Borland Build 5 and 6. We already tried log4cpp but need the
SMTPAppender and rolling FileAppender which are not provided by
log4cpp as we need them.

I first tried the ant build of log4cpp but it doesn't seem to be fully
compatible with the old Borland anymore. I got it compiling after
little changes to build.xml but in the end I'm stuck with a linker
error where Borland just provides an error code.

Afterwards I tried building with my own, newly created project and did
manage to get it to compile and create a static library. I used some
binary distributions of apr to link against because i didn't manage to
get apr built on my own, yet.

When I try to use my own created log4cxx.lib in a test program, I get
a linker error which I don't understand the meaning of. The error is
the following:

[Linker Fehler] Unresolved external 'std::basic_string<char, std::char_traits<char>,
std::allocator<char> >::basic_string<char, std::char_traits<char>, std::allocator<char>
>(int, int, const std::allocator<char>&)' referenced from D:\BENUTZER\TSCHOENING\EIGENE

The same error sometimes is shown with syslogappender as source class.
Any hints on what might be the error? I think it's maybe related to
LogChar, because the error does change whether or not
on the define the error stats basic_string<char.. oder
basic_string<wchar_t... But I always have the linker error. I do use
std::string etc. in Borland Builder, so I think it should work in

Thanks for any help.

Mit freundlichen Grüßen,

Thorsten Schöning

Thorsten Schöning
AM-SoFT IT-Systeme - Hameln | Potsdam | Leipzig
Telefon: Potsdam: 0331-743881-0
E-Mail:  tschoening@am-soft.de
Web:     http://www.am-soft.de

AM-SoFT GmbH IT-Systeme, Konsumhof 1-5, 14482 Potsdam
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