Dear Sir,

I am a new user to RegCM3 while compiling it i encounter the following error.
I am trying to run it on a IBM P5 HPC but running in serial execution mode with single processor.
Operating system is IBM AIX5.3

# ./terrian.x
** terrain   === End of Compilation 1 ===
** anal2   === End of Compilation 2 ===
** interp   === End of Compilation 3 ===
** interp_s   === End of Compilation 4 ===
** bint   === End of Compilation 5 ===
** foricbc   === End of Compilation 6 ===
** formain   === End of Compilation 7 ===
** lndfudge   === End of Compilation 8 ===
** texfudge   === End of Compilation 9 ===
** lakeadj   === End of Compilation 10 ===
** lambrt   === End of Compilation 11 ===
** rotmer   === End of Compilation 12 ===
** mappol   === End of Compilation 13 ===
** normer   === End of Compilation 14 ===
** mxmnll   === End of Compilation 15 ===
** nrot2rot   === End of Compilation 16 ===
** oned   === End of Compilation 17 ===
** output   === End of Compilation 18 ===
** output2   === End of Compilation 19 ===
** rdldtr   === End of Compilation 20 ===
** rdldtr_s   === End of Compilation 21 ===
** rot2nrot   === End of Compilation 22 ===
** setup   === End of Compilation 23 ===
** smth121   === End of Compilation 24 ===
** smther   === End of Compilation 25 ===
** smthtr   === End of Compilation 26 ===
** surf   === End of Compilation 27 ===
** xyobsll   === End of Compilation 28 ===
** rddatcdfi1   === End of Compilation 29 ===
** rddatcdfi2   === End of Compilation 30 ===
** fexist   === End of Compilation 31 ===
1501-510  Compilation successful for file terrain.f.
ld: 0711-317 ERROR: Undefined symbol: .ncopn
ld: 0711-317 ERROR: Undefined symbol: .ncdid
ld: 0711-317 ERROR: Undefined symbol: .ncdinq
ld: 0711-317 ERROR: Undefined symbol: .ncvid
ld: 0711-317 ERROR: Undefined symbol: .ncvgt
ld: 0711-317 ERROR: Undefined symbol: .ncclos
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
make: 1254-004 The error code from the last command is 8.


Stop.
./terrain: Command not found.
could you kindly tell me why this error is there, is it because of netcdf libraries


With Best Regards

Dwijendra Kumar
mail:dwijendra.kumar@gmail.com 
dwijendra@ait.ac.th