[athenstechie]

Hi I am new to Fortran 77.
I am trying to compile a code written in fortran 77 on IBM p 655 using xlf compiler.
I am getting the following message:

1501-510 Compilation successful for file main.f.
ld: 0711-317 ERROR: Undefined symbol: .readgrid
ld: 0711-317 ERROR: Undefined symbol: .simplegrid
ld: 0711-317 ERROR: Undefined symbol: .elementconnnectivity
ld: 0711-317 ERROR: Undefined symbol: .edgebc
ld: 0711-317 ERROR: Undefined symbol: .elementdatac
ld: 0711-317 ERROR: Undefined symbol: .initialcond
ld: 0711-317 ERROR: Undefined symbol: .rhots
ld: 0711-317 ERROR: Undefined symbol: .pressurebc
ld: 0711-317 ERROR: Undefined symbol: .speciesbc
ld: 0711-317 ERROR: Undefined symbol: .inject
ld: 0711-317 ERROR: Undefined symbol: .formcoltri
ld: 0711-317 ERROR: Undefined symbol: .formcolpt
ld: 0711-317 ERROR: Undefined symbol: .review
ld: 0711-317 ERROR: Undefined symbol: .nulvec
ld: 0711-317 ERROR: Undefined symbol: .updatevector
ld: 0711-317 ERROR: Undefined symbol: .vector2matrix
ld: 0711-317 ERROR: Undefined symbol: .updatematrix
ld: 0711-317 ERROR: Undefined symbol: .fluidprop
ld: 0711-317 ERROR: Undefined symbol: .flow
ld: 0711-317 ERROR: Undefined symbol: .velini
ld: 0711-317 ERROR: Undefined symbol: .header
ld: 0711-317 ERROR: Undefined symbol: .printmat
ld: 0711-317 ERROR: Undefined symbol: .checktimestep
ld: 0711-317 ERROR: Undefined symbol: .matrix2vector
ld: 0711-317 ERROR: Undefined symbol: .heatprop
ld: 0711-317 ERROR: Undefined symbol: .transportprop
ld: 0711-317 ERROR: Undefined symbol: .vecadd
ld: 0711-317 ERROR: Undefined symbol: .avg
ld: 0711-317 ERROR: Undefined symbol: .ansol
ld: 0711-317 ERROR: Undefined symbol: .hotstart
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.

all the undefined symbols are functions in different subroutines all of which are located in the sae directory as main.f

Please can some body tell me what culd be the problem.

Thanks
athenstechie.