CXX-DEV: HP-UX IPF 11.23 : Conflict between aCC shared and g++application

Hello,

We have the following problem when porting application from Linux to
HP-UX IPF 11.23 :
- we use the gcc/g++ compiler to be close to the Linux compilation
process
- we need to link to an already ported share object compiled with
aCC and library libstd_v2
- To link our application with this share object we then need to
link our application with libstd_v2

The compiled application systematically generates a core file.

After investigation it seems that there is a conflict between the
libstdcso (from g++) and libstd_v2.so (from aCC)

This problem can be easily reproduced with the following code :

#include <iostream>
using std::cout;


int main(int argc, char **argv)
{
cout << "a standard output \n" ;
}

And then compile with :

g++ -mlp64 -o essai_io essai_io.cpp -lstd_v2 -lCsup

( Note that -lstd_v2 is not usually needed to link with g++ but here,
we use it to simulate the link with our shared library generated by
aCC )

The compiled application systematically generates a core dump at runtime

Do you know if libstdcso from g++ and libstd_v2.so from aCC can be
used in the same process ?
Do you know if we can set some flag to aCC to generate shared library
compatible with g++ ?

Every suggestion should be appreciate

Thanks

Laurent

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At 01:15 PM 11/2/2005, Cavalier, Laurent wrote:

>Do you know if libstdcso from g++ and libstd_v2.so from aCC can be
>used in the same process ?

Yes, we know. No, they cannot be mixed. The two ABI implementations
are not compatible.

>Do you know if we can set some flag to aCC to generate shared library
>compatible with g++ ?

No, it is not possible to mix and match C++ modules from the two compilers.

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Wed, Nov 02, 2005 at 10:19:01AM -0800, Steve Ellcey wrote:

You can mix C code from GCC with C code from HP C, and either of these
can be mixed with one of the two C++ compilers (g++ or aCC), but there
is no way to mix g++ and aCC code in one process. They use completely
different runtime systems and their ABI's are not identical.

I thought there was an IA-64 C++ ABI standard so different C++
compilers on IA-64 could share libraries?

If so, is it just that G++ doesn't implement it?

--
albert chin (china (AT) thewrittenword (DOT) com)

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