builtin_va_start error !

[S, Saravanan (Saravanan)]

Hello,

We get this error when using
gcc 2.95.2 on an HP-UX system 10.20 : 
/bin/ld: Unsatisfied symbols: __builtin_va_start (code).

This problem is preventing the linking of our package.
We have tried to search for the existence of this 
symbol in every library file we could. 
We are linking our package using the following libraries/options
-lgcc , -lcma , -lX11, -lm
Why is this error turning up and which library would this symbol 
be associated with ? We know that this arises due to the 
inclusion of stdargs.h in one of our files ....

Thanks and regards,
S Saravanan