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Re: C++ Link Errors

Hallo Ron,

Am 2002-01-03 um 18:51 schriebst du:

> I am trying to build the Linux UML modeler with cygwin. Everything works
> until I link. Libtool tries adding -ldl to the g++ linking call.  If I enter
> g++ command by hand without the -ldl everything is fine, except I get a
> number of C++ related linking errors.

> My command line is:

> g++ -Wl,--enable-auto-import -ftemplate-depth-99 -O2 -o uml.exe
> After a number of auto-import warnings, which I expect, like:
> Warning: resolving QString::shared_null   by linking to
> __imp___7QString$shared_null (auto-import)

> I receive a series of messages, which I don't expect, like:
> umlview.o(.text+0x34f5):umlview.cpp: undefined reference to `cerr'
> umlview.o(.text+0x34fa):umlview.cpp: undefined reference to
> `ostream::_ls(char const *)'
> umlview.o(.text+0x3506):umlview.cpp: undefined reference to `endl(ostream &)
> '

> Any ideas?

cerr et al. are in libstdc++.a

Add libstdc++.a to the link line.  Libtool uses gcc to link not g++,
i guess it is a bug in libtool, though if you use g++ like shown above
libstdc++ should be linked in automatically.


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