Re: [netcdfgroup] Compiling netCDF in Fortran

If you did a recent install using fink, it has the option set to separately 
compile the fortran library from the C library, so your compile line would need 
something like

 -L/sw/lib -lnetcdf  -L/sw/lib/netcdf-gfortran/ -lnetcdff

However, if it is from a recent install, I wouldn't be surprised if g77 fails 
and you would need to use gfortran instead.  But give it a try.

-Roy



On Jul 29, 2010, at 1:13 PM, Jose Borrero wrote:

> 
> Hello everyone,
> 
> I am sure this an incredibly basic question, but maybe someone can tell me 
> what i am doing wrong.  I am pretty hopeless in this regard.
> 
> I have a FORTRAN code that writes data out to netCDF files.  It is old, but 
> it works...
> 
> The code compiles using a makefile that calls various netCDF libraries. 
> 
> I am using the g77 compiler that i installed via fink
> 
> the makefile looks like this:
> 
> =================================
> F77         =  g77
> OBJ         =  most3_x
> SRC         =  most3_nc_x.f offtime.f timestep.f swlon.f swlat.f swrun03.f 
> surf_read.f surf_run.f rgrd1.f rgrd2.f
> OPT         =  -O -I/sw/lib/netcdf-gfortran/include 
> -L/sw/lib/netcdf-gfortran/include -lnetcdf
> 
> $(OBJ):  $(SRC)
>       $(F77) $(SRC) $(OPT) -o $(OBJ)
> =================================
> 
> the error I get looks like this:
> 
> 
> =================================
> ld: library not found for -lnetcdf
> collect2: ld returned 1 exit status
> make: *** [most3_x] Error 1
> =================================
> 
> so what i can;t figure out is what file is the compiler looking for? I have 
> installed the netCDF packages using fink on my macbook (10.6.4).  It is 
> obviously looking for a library file, but what it its exact name? and where 
> might i find it? I have searched around in the usual places, i.e. places 
> where fink puts things, i.e. in the /sw directories.
> 
> This same set up works on my older macs (10.4.xx) and things worked by just 
> altering the paths in the lines above.  But now, on this newer set up, I 
> can't seem to get the right bits talking to each other.
> 
> I have tried adding various paths after the -l flag in the OPT line above, 
> but it gets me to the same place.
> 
> Can someone tell me fundamentally what that OPT line in the make file is 
> doing?  why is there a path before the include file? but not before the 
> library file?
> 
> What is the -I flag and what is the -L flag?  (I am guessing Include and 
> Library, but then why -l?)
> 
> Anyway, any help/suggestions appreciated.
> 
> -jose
> 
> 
> 
> --
> Jose C. Borrero
> Adjunct Assistant Professor
> University of Southern California 
> Tsunami Research Center
> http://www.usc.edu/dept/tsunamis
> 
> 
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**********************
"The contents of this message do not reflect any position of the U.S. 
Government or NOAA."
**********************
Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
1352 Lighthouse Avenue
Pacific Grove, CA 93950-2097

e-mail: Roy.Mendelssohn@xxxxxxxx (Note new e-mail address)
voice: (831)-648-9029
fax: (831)-648-8440
www: http://www.pfeg.noaa.gov/

"Old age and treachery will overcome youth and skill."
"From those who have been given much, much will be expected" 



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