[McIDAS #MET-935016]: McIDAS - Cannot get mcunpack to execute -- keep getting message to define McINST_ROOT

Hi Alan,

re:
> Been a few days since we last communicated.  I have since
> installed gcc and have been able to get the process further
> along---much, much more output showing things being checked,
> etc.  I will append the /src/makelog file and the
> /hdf/config.log files for you see.

OK.  I have edited out most of the makelog and config.log
output in this reply.

> Could be that I have the
> gcc, but the C++ compiler is not functional--hard to tell--so
> much printout.

McIDAS does not use C++ interfaces for any of the packages
it includes (e.g., zlib, hdf, netcdf, etc.).  Because of this
we require that the CXX Unix environment variable be set to
the empty string (" ") so that none of the 'configure' scripts
will attempt to build C++ interfaces.

> First the makelog file:
> 
> #########################################
> Sun Mar 26 16:59:26 EST 2006: BUILD INIT
> ##########################################
> 
> ./configure --prefix=/home/mcidas
> creating cache ./config.cache
> checking for top-level source-directory
> /home/mcidas/mcidas2005/netcdf
> checking for m4 preprocessor
> checking for m4... m4
> checking m4 flags... -B10000
> checking for xlc... no
> checking for c89... c89
> checking C compiler "c89"... works
> checking how to make dependencies... false
> checking for CC... no
> checking for cxx... no
> checking for c++... no
> checking for g++... no
> checking for gcc... gcc
> checking C++ compiler "gcc"... configure: warning: gcc failed
> on test program
> configure: warning: Could not find working C++ compiler

This tells me that your environment is not quite setup correctly.
The reason I say this is that the Unix environment variable CXX should
be set to an empty string so that C++ interfaces for various
packages included with the McIDAS distribution don't get built
(McIDAS does not use any C++ code, just C and Fortran).

The 'mcidas' account preparation instructions have you unpack the
distribution and then include an 'if' statement in your shell definition
file (e.g., .bashrc if you are using Bash) that will load environment
variable definitions from ~mcidas/admin/mcidas_env.sh.  One of the
environment variables defined in mcidas_env.sh is CXX, and it is
set to the empty string.  The fact that configure tried to find a
working C++ compiler suggests that CXX is not set in your environment.

> checking for f90... no
> configure: warning: Could not find working Fortran-90 compiler

The environment variable definitions in ~mcidas/admin/mcidas_env.sh
also set the Unix environment variable F90 to a blank string, and
configure would use this fact to not try to find a working F90
compiler.

...

> checking whether gcc and cc understand -c and -o together... yes
> checking how to run the C++ preprocessor... /usr/bin/cpp
> configure: error: C++ preprocessor "/usr/bin/cpp" fails sanity
> check
> See `config.log' for more details.
> configure     /home/mcidas/mcidas2005/hdf:    FAILED

The inability to find a working C++ compiler is the error that
is causing your build to cease prematurely.  Setting of the
CXX environment variable to the empty string would cause the
configure script for the HDF portion of the build to not try
and build the C++ interface.

> So, perhaps this will point a little further along.

Please send me the listing of the environment in which you
are attemtping to build McIDAS:

<as 'mcidas'>
env                      <- run the 'env' command and send us the output

What you could do at this point to test to see if the build
would work if your environment was correct is:

<login as 'mcidas'>
CXX=" "
F90=" "
CC=gcc
VENDOR=-g77
export CXX F90 CC VENDOR

cd ~mcidas/mcidas2005/src
make clobber
make all

> Thanks, Tom

No worries.  I think you are close to having a functional development
environment.  Once you do, the McIDAS build should be simple.


Cheers,

Tom
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Ticket Details
===================
Ticket ID: MET-935016
Department: Support McIDAS
Priority: Normal
Status: Closed