shared lib can't be loaded

Hi,
     NCL binary ncl-4.2.0.a033.Linux_i686 is installed on our RedHat
Linux with Intel Xeon archetecture. And we have lf95 Fortran compiler
from Lahey Inc. I'm trying to use the shared library
wrf_user_fortran_util_0.so in NCL script but got the following error:

###########################################################################################
$ ncl < wrf_bwave.ncl
 Copyright (C) 1995-2006 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 4.2.0.a033
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
warning:An error occurred loading the external file
./wrf_user_fortran_util_0.so, file not loaded
./wrf_user_fortran_util_0.so: undefined symbol: g_arxr
fatal:syntax error: line 152 in file WRFUserARW.ncl before or near :
      wrf_user_fortran_util_0 :
------------------------------^

fatal:syntax error: possibly an undefined procedure
fatal:syntax error: line 156 in file WRFUserARW.ncl before or near :
      wrf_user_fortran_util_0 :
------------------------------^
##############################################################################################

The following is the step generating shared library
wrf_user_fortran_util_0.so:

******************************************************
construct C wrapper for fortran code...
wrapit77 < wrf_user_fortran_util_0.f > wrf_user_fortran_util_0_W.c
wrapper generated

compile C wrapper...
nhlcc -c wrf_user_fortran_util_0_W.c
gcc -DSYSV -D_POSIX_SOURCE -D_XOPEN_SOURCE -DByteSwapped -DNeedFuncProto
-ansi -O -c wrf_user_fortran_util_0_W.c -L/home/lwang/ncarg/lib
-L/usr/X11R6/lib -I/home/lwang/ncarg/include -I/usr/X11R6/include -lhlu
-lncarg -lncarg_gks -lncarg_c -lX11 -lXext -lg2c -lgcc -lm
gcc: -lhlu: linker input file unused because linking not done
gcc: -lncarg: linker input file unused because linking not done
gcc: -lncarg_gks: linker input file unused because linking not done
gcc: -lncarg_c: linker input file unused because linking not done
gcc: -lX11: linker input file unused because linking not done
gcc: -lXext: linker input file unused because linking not done
gcc: -lg2c: linker input file unused because linking not done
gcc: -lgcc: linker input file unused because linking not done
gcc: -lm: linker input file unused because linking not done
C wrapper compiled

compile fortran routine...
lf95 -c wrf_user_fortran_util_0.f -L/home/lwang/ncarg/lib
-L/usr/X11R6/lib -L/usr/local/lib -I/home/lwang/ncarg/include
-I/usr/X11R6/include -lhlu -lncarg -lncarg_gks -lncarg_c -lX11
-L/usr/lib/gcc-lib/i386-redhat-linux/egcs-2.91.66 -lg2c -lm
Encountered 0 errors, 0 warnings in file wrf_user_fortran_util_0.f.
fortran routine compiled

create shared library...
lf95 --shared -o wrf_user_fortran_util_0.so wrf_user_fortran_util_0.o
wrf_user_fortran_util_0_W.o
shared library created

*******************************************************************

And when I grep that symbol "g_arxr" in the object/lib file, it is
indeed undefined. But I can't figure out why the shared lib is not
generated correctly. Do you have some idea on this?

Thanks,
Leilei
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Received on Wed Feb 15 2006 - 15:43:11 MST