Very Computer

Hi,
I have the next problem:

I am building a C++ shared object using the SUN's workshop 5.0 compiler and
an executable using the gcc 2.8.1 compiler. Every thing works
just find until the moment I am trying to use an iostream object, from this
moment on I get the unresolved symbol error.

The C++ header :
#ifdef __cplusplus
extern "C"
#endif
 void foo( );

The source:
#include "a.h"
#include <iostream.h>
#ifdef __cplusplus
extern "C"
#endif
void foo( )
{
cout << "Hello world\n";

Quote:}

The C source (the executable):
#include "a.h"
#include <dlfcn.h>
#include <errno.h>
#include <stdio.h>

int main(){
        void* lpHandle;
        void (*lpFunc)();
        lpHandle=dlopen ( "liba.so", RTLD_NOW | RTLD_LOCAL);
        if ( !lpHandle )
        {
                perror ( "dlopen");
                printf ( "%s\n", dlerror());
                exit (errno );
        }

        lpFunc = (void(*)())(dlsym ( lpHandle, "foo"));
        if ( !lpFunc)
        {
                perror ( "dlsym");
                printf ( "%s\n", dlerror());
                exit (errno );
        }

        (*lpFunc)();

        dlclose ( lpHandle);

Quote:}

Every thing works fine until I start to build the executable using the gcc
compiler instead of the CC compiler.
The error I get is:
dlopen: Error 0
ld.so.1: ./a.out: fatal: relocation error: file ./liba.so: symbol
__1cDstd2l6Frn0ANbasic_ostream4Ccn0ALchar_traits4Cc____pkc_2_: referenced
symbol not found

The motivation for doing this is that I want to write an Apache's module in
C++. I have to use the CC compiler since I am using the ObjectSpace's STL.
But
the Apache was build using gcc. Using the Apache I get the same problem.

Thank you for your time.

Eyal

 You must of course link in the SunWSPro library that contains the iolib
stuff. Compile a C++ program with SunWSPro, and use -v to show linker op-
tions to find out.
 Good luck with this, though. You're bound to get other stuff like opera-
tor new() that might clash with gcc runtime. Basically, it's impossible
to mix C++ code between compilers.

        Frank

--

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