static linking of standard libs

[galbe]

I'm trying to use Ice together with matlab. This results in an segmentation fault, since matlab is compiled using gcc 2.95.x and I'm using gcc 3.3.1 to compile my Ice-using library and Ice.

When linking the library into matlab and initialising Ice I get a segmentation fault due to a buggy implementation of dynamic_cast

[see http://gcc.gnu.org/ml/gcc-bugs/2002-05/msg00964.html ]

My idea now is to statically link libstdc++ and libgcc into my application (and Ice), since I assume that the problem is caused by the fact, that matlab links to an older version of libstdc++ and incompatibility of the used RTTI.

My idea is to modify the LDFLAGS to something like:

LDFLAGS = -nodefaultlibs -Wl,-Bstatic -lstdc++ -lgcc -Wl,-Bdynamic <other libs>

Do you think, this can work, or do you have a better idea?

Thanx in advance

Gerald

[marc]

If Matlab is plain C, then you can use the GCC 3.3 library. If it's written in C++, then this doesn't work, because the binary C++ format has changed between 2.95.x and 3.3.x.

[galbe]

Unfortunatly matlab is programmed using c++.

[bernard]

Hello,

Maybe your best option is to use an Ice 1.0.1/GCC 2.95.3 build with Matlab: see Can Ice be compiled with gcc 2.95?

If you really need to mix C++ compilers, you could try to combine everything in a single library linked with -Bsymbolic ... but I am not very optimistic.

Cheers,
Bernard

[galbe]

Thanx for your help.

Unfortunatly I REALLY have to mix compilers...

Well, I'll give it a try..

By the way

Thanx to ervyone at ZeroC for all the support I got: My diplomthesis, which is based on Ice reveived a "very good".

Thanx again