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20011025: need to update mapcoord.c in your Uniata McIDAS-X release

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  • Subject: 20011025: need to update mapcoord.c in your Uniata McIDAS-X release
  • Date: Thu, 25 Oct 2001 10:40:36 -0600
>From: Unidata User Support <address@hidden>
>Organization: Unidata Program Center/UCAR
>Keywords: McIDAS-X 7.8 addendum mapcoord.c

Hi,

If you are not the appropriate contact for Unidata McIDAS-X related
issues, or if you personally did not download Unidata McIDAS since
October 4, please pass this email along the appropriate person.

The addresses of this email were seen to have downloaded Unidata
McIDAS-X 7.8 with addendum 7.803 (released on October 4).  This
release/addendum contained modifications to the C source routine
mapcoord.c which were incorrect.  The the bad code will cause
segmentation violations when running POINT source contouring routines
(e.g., SFCCON, RAOBCON, etc.) with invocations that do not specify
the MAP projection.  Here are some of examples for illustration:

- will not work -

SFCCON T USA LATEST
RAOBCON Z 500 NA 12

- will work -

SFCCON T USA LATEST PRO=CONF
SFCCON T USA LATEST PRO=MERC
RAOBCON Z 500 NA 12 PRO=MERC

You should, therefore, update your source distributions with the newly
modified version of mapcoord.c and then rebuild the applications
dependent on it.

Here is the easiest way to accomplish this task:

1) login to the machine(s) where you build McIDAS-X as the user 'mcidas'

2) re-grab the addendum containing 7.803 code:

   cd mcidas7.8/update
   ftp ftp.unidata.ucar.edu
   <user> umcidas
   <pass> XXXXXX
   cd unix/780/bugfix
   binary
   get mcupdate.tar.Z
   quit

3) extract mapcoord.c from the mcupdate.tar.Z compressed tarball:

   zcat mcupdate.tar.Z | tar xvf - ../src/mapcoord.c

4) rebuild and reinstall applications:

   cd ../src
   touch mapcoord.c         (to make sure that its timestamp is newer than
                             libmcidas.a)
   make mcx

   If you using a vendor-supplied Fortran compiler (i.e., not gcc/f2c)
   you should be done (the new executables will still be linked to
   the ones in ~mcidas/bin).

   If you are using gcc/f2c, you will need to relink the relinked
   applications to the installation bin directory.  The absolute
   easiest way to do this is:

   make install.bin

I chose to not make a new addendum with the mapcoord.c modifications since
the number of users that downloaded distributions that needed modification
is small.

Sorry for the hassle...
 
Tom Yoksas