[netcdfgroup] help compling c++ code with netcdf.

• To: <netcdfgroup@xxxxxxxxxxxxxxxx>
• Subject: [netcdfgroup] help compling c++ code with netcdf.
• From: "Tang, Jinyun" <tang16@xxxxxxxxxx>
• Date: Wed, 1 Apr 2009 18:09:51 -0400

Hi,
  I'm new to netcdf. But I'm sure I installed netcdf4 correctly on my computer, 
as it passed all the test. However, when I'm trying to link my .o files, I 
received a chunk of errors such as:
 /usr/local/netcdf/netcdf-4.0/cxx/netcdf.cpp:172: undefined reference to 
`nc_def_var'
 /usr/local/lib/libnetcdf_c++.a(netcdf.o): In function `NcFile::sync()':
 /usr/local/netcdf/netcdf-4.0/cxx/netcdf.cpp:275: undefined reference to 
`nc_sync'

The command I used for linking is as below: (assuming .o files are ready)
#Specify the compiler
CC =  g++

#Specify the compiling flags
CFLAGS = -c -I/usr/local/include
#OFLAGS = -g -o
OFLAGS = -O3 -o 
LFLAGS = -L/usr/local/lib -lnetcdf_c++

OBJS =              \
global_fun.o

XOBJ = ncextra.o
#=============================================================================
# Executable: xhydstmtem
#=============================================================================
ncextra : $(OBJS) $(XOBJ)
        $(CC) $(OFLAGS) ncextra $(OBJS) $(XOBJ) $(LFLAGS)
#=============================================================================

  Can anyone help me with this? I appreciate it. 
  Jinyun

Ph.D student
Earth and Atmosphric Sciences Department
Ecosystems and Biogeochemical Dynamics Laboratory
Purdue University CIVIL 3250, 550 Stadium Mall Drive West Lafayette, IN, 
47907-2051
http://web.ics.purdue.edu/~tang16/

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  • Re: [netcdfgroup] help compling c++ code with netcdf.
    • From: Ed Hartnett