Unsupported .stab relocation error / mlongcall issue

["Fabien" <fabien_milcent@yahoo.fr>]

Hi,

We are developping an Ada95 application using the GNAT 5.01a compiler
for PowerPC, running on a Motorola 5100 card, with VxWorks 5.5.1.
The application is rather big therefore we compile using the -mlongcall
option (no other options).

We observe that the complete system has an unstable behaviour: it gets
stack. We get some references to "Unsupported .stab relocation" error.
We didn't find any piece of code in our application that may overwrite
the O.S. memory (we do dynamic memory allocation only at startup time),
that may have uninitialized variables...
The same application compiled for Windows 2000 seems to behave
properly.

Is there some known issues regarding the compiler and long call jumps
under VxWorks?
Do we need to recompile the Ada Libraries with the -mlongcall option?
If yes, how?

Does anyone have any idea on what could possibly raise an "Unsupported
.stab relocation error"?

Thanks in advance,
Best Regards,
Fabien.