Re: [Mingw-users] Undefined References

[Matriark T. <mat...@re...>]

On Wed, 12 Jun 2002 20:06:38 +1000 (EST)
Danny Smith <dan...@ya...> wrote:

>  --- Matriark TerVel <mat...@re...> wrote: > Hello all,
> > 
> > When trying to link an app (which has linked before fine in the past) i now
> > get these linker errors. MinGW is in /usr/cross-tools and my liner line is:
> > 
> 
> I think you are mixing code built with new G++ with old libstdc++.   You can't
> do that. Nor can you do the converse.  Also with new libstdc++-v3, references
> to iostream and STL classes need to be in namespace std.
> 
> See below:
> 
> > g++ -o gserver.exe cfg.o gserver.o levels.o otherstuff.o pascalstrings.o
> > convertedclasses.o passwords.o  -L/usr/cross-tools/i386-mingw32msvc/lib  
> > -L/usr/lib/mingw32 -L. -L/usr/cross-tools/lib/gcc-lib/i386-mingw32msvc/2.95.2
>                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
>                                     old libstdc++.a
> 
> > -L/usr/cross-tools/i386-mingw32msvc/lib -lstdc++ -lws2_32 libsqlite.a libz.a
> > -lm 
> > 
> > the majority of the errors are:
> > 
> > /root/gserver-win32/src/convertedclasses.cpp:369: undefined reference to
> > `istream::tellg()'
> > /root/gserver-win32/src/convertedclasses.cpp:370: undefined reference to
> > `istream::seekg(long, ios::seek_dir)'
> 
> Are you using old G++ headers here?
> The names are not in namespace std.  
> 
> ==snip++
> 
> > /usr/cross-tools/include/g++-3/iostream.h:230: undefined reference to `VTT
> > for ifstream'
> > /usr/cross-tools/include/g++-3/iostream.h:230: undefined reference to `VTT
> > for ifstream'
> > /usr/cross-tools/include/g++-3/iostream.h:230: undefined reference to `VTT
> > for ifstream'
> 
> These are old headers.  The new ones are in include/g++-v3.  
> 
> ==snip==
> 
> Here is where I get concerned about mixing ABI's
> 
> > /root/gserver-win32/src/convertedclasses.cpp(.eh_frame+0x12): undefined
> > reference to `__gxx_personality_v0'
> > passwords.o: In function `des_set_key':
> > /root/gserver-win32/src/fcrypt.h:349: undefined reference to
> > `__gxx_personality_v0'
> 
> 
> __gxx_personality_v0 is generated by new G++ compiler. That's why I'm guessing 
> that you're mixing objects from old and new G++.
> 
> Danny
> 
> > collect2: ld returned 1 exit status
> > make: *** [gserver] Error 1
> > [root@localhost src]# 

yeah. i forgot to set the path to the older gcc :P I was trying to use the old gcc headers with gcc 3.0.4 (my native gcc).

Thanks,

-- 
Matriark TerVel

Systems Administrator / Programmer
Anti-Graal HQ
http://opengraal.com