Linking fortran with C libs

[Vardhan, Sundara (GE Infra, Energy)]

Hi All

I installed gcc 4.2.3 with gfortran on AIX 5.3. Compiled and created a shared object with programs written in C. Compiled fortran code with gfortran and tried to link with the earlier created shared object.  I get the following error

undefined reference to `.rtregister_'

where rt_register is the 'C' function call that is required. 

The same set of programs worked fine on a Linux box with g77. Am I missing anything? Your help will be greatly appreciated.

With Regards

Vardhan