Very Computer

I've got a strange linking problem that I've been struggling with and
I hope someone can tell me what's going on and how to fix it.

I've got a few classes that I compile into a static library, but when
I link my executable with this library, the linker complains about
undefined symbols.  These symbols look like they come from the C++
library.  The strange thing is, everything works fine when I link
using the object files in the library.

I'm using a Sun Ultra-250 running Solaris 2.8, using the Sun Workshop
version 6 C++ compiler.  Here's sample code:

driver.cxx:

#include "m.h"

int main()
{
    M m;

    m.use ( 'r' );

    return 0;

Quote:}

m.h:

#include <map>

class M
{
public:
    M();

    void use ( char c );

private:
    typedef std::map<char, int> Table;

    Table t_;

Quote:};

m.cxx:

#include "m.h"

M::M()
{
    t_['x'] = 15;

Quote:}

void M::use ( char c )
{
    t_[c]++;

Quote:}

Linking the objects works fine:

CC -c driver.cxx
CC -c m.cxx
CC -o driver driver.o m.o

But if I now create a library and use that I get the undefined error:

ar -r m.a m.o
ar: creating m.a
CC -o driver driver.o m.a
Undefined                       first referenced
 symbol                             in file
std::pair<__rwstd::__rb_tree<char,std::pair<const
char,int>,__rwstd::__select1st<std::pair<const char,int>,
char>,std::less<char>,std::allocator<std::pair<const char,int> >

Quote:>::iterator,bool>__rwstd::__rb_tree<char,s

td::pair<const char,int>,__rwstd::__select1st<std::pair<const
char,int>,char>,std::less<char>,std::allocato
r<std::pair<const char,int> > >::insert(const std::pair<const
char,int>&) m.a(m.o)
ld: fatal: Symbol referencing errors. No output written to driver

What's going on, and how can I fix it?

Thanks in advance for any help,

Andreas.

What's happening here is that your 'm.a' is incomplete --
it is missing template instantiation objects (stuff from
SunWS_cache) ...

Quote:> ar -r m.a m.o

Don't do that. Use "CC -xar -o m.a m.o" instead.

Cheers,
--
In order to understand recursion you must first understand recursion.

Thanks very much, this has worked perfectly.  It's in the CC man page,
if you know to look there!  I went through man pages for ar and ld,
but not CC...

Andreas.