[ncl-install] problems linking ncl with other libraries

[Rafael Pacheco]

Hello, 

I am having problems linking ncar version 6 with some plotting package for 
ROMS, the old version of ncar seemed to be able to run (4.2.2) but now when 
I 
re-installed this version I had problems linking with ncar. Please see 
message 
below that was sent to me by the ROMS staff. I would appreciate giving me 
access to 4.2.2 or guide me to solving this problem. Thank you, 
-- Rafael 
  ---------------------------------------- 
  Department of Mathematics and Statistics 
  Arizona State University   
  Tempe, Arizona  85287-1804     
  Email: rpacheco at asu.edu 
  http://math.la.asu.edu/~rpacheco 
  ---------------------------------------- 

Here is my email: 
Hello everybody, 
I have results from my ROMS simulation and generated netcdf files 
ocean_avg.nc, 
ocean_his.nc, ocean_rst.nc, etc. 

I would like to plot the results and I tried the roms_gui but did not load 
properly, not even the nc files from the default sample problem upstream. 
Anyway, I am trying now the roms tools that I downloaded from svn checkout 
https://www.myroms.org/svn/src/plot 

I installed the ncl version 6 and seems to work. But when I try the makefile 
in the plot tools I got the following error: 

I would be grateful if someone can guide me to solve this problem and/or 
telling me of another plotting tool that I can use to view my results. 

Thanks! 
Rafael 


/usr/bin/gfortran -frepack-arrays -g -fbounds-check \ 
cnt.o cpmpxy2d.o mapeod.o stumsl.o stumxy.o vvumxy.o -o 
/home/rpacheco/PLOTROMS/bin/cntG \ 
libUTIL.a -L/usr/local/lib -lncarg -lncarg_gks -lncarg_c -L/usr/X11R6/lib64 
-lX11 -L/opt/gfortransoft/s_netcdf4/lib -lnetcdf 
-L/opt/gfortransoft/s_hdf5/lib -lhdf5_hl -lhdf5 -lz 
/usr/bin/ld: Warning: size of symbol `mapcm1_' changed from 28 in 
libUTIL.a(hbackground.o) to 40 in /usr/local/lib/libncarg.a(mapbd.o) 
/usr/bin/ld: Warning: size of symbol `mapcm2_' changed from 60 in 
libUTIL.a(cnt_frame.o) to 128 in /usr/local/lib/libncarg.a(mapbd.o) 
/usr/bin/ld: Warning: size of symbol `mapcm4_' changed from 128 in 
libUTIL.a(hbackground.o) to 224 in /usr/local/lib/libncarg.a(mapbd.o) 
/usr/bin/ld: skipping incompatible /usr/local/lib/libhdf5_hl.a when 
searching 
for -lhdf5_hl 
/usr/bin/ld: skipping incompatible /usr/local/lib/libhdf5.a when searching 
for 
-lhdf5 
/usr/bin/ld: skipping incompatible /usr/local/lib/libz.so when searching 
for -lz 
/usr/bin/ld: skipping incompatible /usr/local/lib/libz.a when searching for -
lz 
libUTIL.a(crash.o): In function `crash': 
/home/rpacheco/PLOTROMS/src/crash.f90:1562: undefined reference to 
`nf_close_' 
/home/rpacheco/PLOTROMS/src/crash.f90:1563: undefined reference to 
`nf_close_' 
/home/rpacheco/PLOTROMS/src/crash.f90:1575: undefined reference to 
`nf_strerror_' 
libUTIL.a(get_nc2dat.o): In function `get_nc2dat': 


AND HERE IS THEIR REPLY: 

Pay attention to this: 
Quote: 

/usr/bin/ld: Warning: size of symbol `mapcm1_' changed from 28 in 
libUTIL.a(hbackground.o) to 40 in /usr/local/lib/libncarg.a(mapbd.o) 
/usr/bin/ld: Warning: size of symbol `mapcm2_' changed from 60 in 
libUTIL.a(cnt_frame.o) to 128 in /usr/local/lib/libncarg.a(mapbd.o) 
/usr/bin/ld: Warning: size of symbol `mapcm4_' changed from 128 in 
libUTIL.a(hbackground.o) to 224 in /usr/local/lib/libncarg.a(mapbd.o) 

this means that your used code (i.e., Hernan's plotting package) attempts to 
access common blocks 
of NCL/NCARG libraries. It is a standard practice when using NCAR graphics 
in 
a fairly advanced 
mode. Unfortunately sometimes NCAR graphics people change these common 
blocks 
internally by adding 
more variables. When your code is designed to work with a certain version of 
NCAR graphics 
library may not be consistent with a newer version. It did happened 
before.mapcm4_ 

The only way to fix this is to find declarations of common blocks "mapcm1", 
"mapcm2", and "mapcm4" 
inside the source code of NCAR graphics libraries (I guess, these are 
somewhere within areas package 
inside ncarg2d and them modify parts of your own code to bring sequence of 
variables in the common 
block be exactly the same as inside NCAR graphics libraries. It is tedious, 
but there is no way around.