From: bluerv AT my-deja DOT com
Newsgroups: comp.os.msdos.djgpp
Subject: Bizarre linker problem (2nd try)
Date: Fri, 24 Sep 1999 04:33:35 GMT
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(2nd try...the first try went nowhere but my ISP...sorry if you see
this twice)

I'm getting these bizarre link problems.  I'm trying to override the
default behavior of std::basic_string using a character traits.  Here's
a small snippet of code:

struct foo : public std::string_char_traits<char>
{
};

typedef basic_string<char, struct foo > CIString;

(of course, in  a real implementation "foo" would override behaviors,
but I wanted to simplify the problem.)

and here's the link errors:

gcc  -DDGJPP -g   -o gw4dos.exe   gw4dos.o gw4eng.o mutation.o score.o
utility.o  -lstdcx
mutation.o: In function `basic_string<char, foo,
__default_alloc_template<false, 0> >::basic_string(void)':
mutation.cpp:23: undefined reference to `basic_string<char, foo,
__default_alloc_template<false, 0> >::nilRep'
mutation.o: In function `basic_string<char, foo,
__default_alloc_template<false, 0> >::basic_string(char const *)':
mutation.cpp:6: undefined reference to `basic_string<char, foo,
__default_alloc_template<false, 0> >::nilRep'
mutation.o: In function `basic_string<char, foo,
__default_alloc_template<false, 0> >::basic_string(basic_string<char,
foo,
__default_alloc_template<false, 0> > const &, unsigned long, unsigned
long)':
mutation.cpp:3: undefined reference to `basic_string<char, foo,
__default_alloc_template<false, 0> >::nilRep'
utility.o: In function `basic_string<char, foo,
__default_alloc_template<false,0> >::basic_string(basic_string<char,
foo,
__default_alloc_template<false, 0> > const &, unsigned long, unsigned
long)':
utility.cpp:2: undefined reference to `basic_string<char, foo,
__default_alloc_template<false, 0> >::nilRep'
make.exe: *** [gw4dos.exe] Error 1

This works fine in VC6.0 (not that that matters.)

Any thoughts?

I also tried replacing the STL with STLport, but that led to even worse
nightmares.


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