Re: 950202: Problem with ncredef with HP-UX A.09.01

> Organization: NCAR / ATD
> Keywords: 199502022355.AA29198

Hi Jeff,

> I've come across a case in which ncredef apparently works differently under
> HP-UX (A.09.01) then under SunOS (4.1.3) and Solaris (5.3). I have a program
> in which I want to write out a global attribute whose value I don't know until
> I have finished processing all my data. So the way I handled this was to
> use the sequence
>       ncredef
>       ncattput
>       ncendef
> at the end of my program (or before I closed the file if my program was
> generating multiple NetCDF files). This worked fine with SunOS and Solaris.
> But on an HP, it would only work if the NetCDF file was in the directory that
> I was executing the program in. Otherwise, it would give the error message
> ncredef: filename "": No such file or directory
> . Is, in fact, the usage of ncredef limited to the current directory?

Here's something that might be relevant from our netCDF FAQ list:
       
  IS THERE A KNOWN BUG WITH NETCDF UNDER HPUX?
   
       
       The current version of the HPUX operating system provides an
       incorrect definition of the FILENAME_MAX macro. This results in
       the symptom that the ncredef() function does not work properly
       when invoked from a directory other than the one the open netCDF
       file is in. A workaround is to apply the following patch to the
       file netcdf/libsrc/local_nc.h before building the library:

diff -c -r1.39 local_nc.h
*** /tmp/T0a004uN       Tue Mar  8 11:14:12 1994
--- local_nc.h  Wed Feb  9 15:56:36 1994
***************
*** 12,17 ****
--- 12,21 ----

  #include      <stddef.h> /* size_t */
  #include      <stdio.h> /* FILENAME_MAX */
+ #if defined(_HPUX_SOURCE) && FILENAME_MAX < 255
+ /* Arrgh. HP thinks FILENAME_MAX is _POSIX_NAME_MAX */
+ #undef FILENAME_MAX
+ #endif
  #ifndef FILENAME_MAX
  #define FILENAME_MAX  255
  #endif

Please let me know if this doesn't fix the problem.

______________________________________________________________________________

Russ Rew                                                UCAR Unidata Program
address@hidden                                          P.O. Box 3000
http://www.unidata.ucar.edu/                          Boulder, CO 80307-3000
______________________________________________________________________________