Re: [Mingw-users] How to use the generated lib in C++ Program

[Keith M. <kei...@to...>]

John Chung wrote, quoting cxf:
>> I Follow the FAQ "How can an MSVC program call a MinGW DLL,
>> and vice versa?" and generate the library testdll.lib.  But
>> when I use the testdll.lib in VC,it seems ok when linking
>> with .c files, but when I change the file extenstion from
>> ".c" to ".cpp", the VC can not link with it.  Are there any
>> difference between linking in C program and C++ program. 
>
> Yes C++ has name mangling.

And that name mangling is deliberately different between MinGW
and MSVC;  when you compile a ".cpp" file, the compiler assumes
you want C++ binding for all public symbols, unless *you* tell
it otherwise, (by declaring those symbols as `extern "C"').

You *cannot* share symbols with C++ binding between different
compilers.

This is a FAQ; I've lost count of the number of times it has
been answered, in the last month alone!  It's also discussed in
detail on http://www.mingw.org/MinGWiki/index.php

Please search the archives, and the MinGWiki, before posting
such lazy questions.  Much as I dislike telling anyone to RTFM:
http://news.gmane.org/gmane.comp.gnu.mingw.user
http://www.mingw.org/MinGWiki/index.php/FAQ

Regards,
Keith.