Preparing COBOL programs

 

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Before preparing your COBOL programs, check with your system administrator that the COBOL compiler is set up to link with the correct C libraries. By default, the COBOL compiler Version 3.2 links to 3.0 SPARCompiler C libraries. For example, to update the compiler to link with SPARCompiler Version 4.0, ensure that your system administrator has completed the following:

1. Change directory to $COBDIR/coblib:

     cd $COBDIR/coblib

   Note:

   By default, COBDIR is /opt/lib/cobol.

2. Make a backup copy of liblist:

     cp liblist liblist.saved

3. Edit the liblist file using a standard UNIX editor like vi:

     vi liblist

4. Change all references from SC3.0 to SC4.0.

The COBOL compiler is now set up for you to compile COBOL programs.

Precompiled COBOL programs are supplied in the /opt/mqm/samp/bin directory. Use the Micro Focus compiler from the directory /opt/bin to build a sample from source code.

To compile, for example, the sample program amq0put0:

1. Ensure that the environment is set:

     export COBDIR=/opt/lib/cobol
     export PATH=/opt/bin:$PATH
     export LD_LIBRARY_PATH=$COBDIR/coblib:$LD_LIBRARY_PATH

   Note:

   The above assumes that COBOL is installed in the default directories.

2. Define the location of the copybooks which declare the MQI structures:

     export COBCPY="/opt/mqm/inc"

3. Link your program with one of the following libraries when building the application:
   

   Library file	Program/exit type
   libmqmcb.so	Server for COBOL
   libmqicb.so	Client for COBOL

4. Compile the program:

     cob -vxP amq0put0.cbl -lmqmcb -lmqm -lmqmcs -lmqmzse