IBM z/OS various notes | Mysiar’s notes

Access

ssh - preferable
terminal emulator TN3270

Compilers

z/OS V2.4 XL C/C++
Enterprise COBOL for Z/OS V6.3
had to use standard sh shell, tcsh didn’t show compilers errors
For Cobol in .profile
- export STEPLIB=IGY630.SIGYCOMP
- export PATH=$PATH:/usr/lpp/IBM/cobol/igyv6r3/bin
- export LIBPATH=$LIBPATH:/path_to_your_custom_library

Compiling

C

compiling large amount of single function files

rm -rf lib o
mkdir -p o lib
cd o && xlc -O2 -Wl,DLL -qexportall -v ../src/*.c

linking to library

cd lib && xlc -o MYLIB ../o/*.o -Wl,DLL -qexportall -v

this step produces two files MYLIB & MYLIB.x, where MYLIB.x contains IMPORT CODE,'MYLIB','FUNC1' for each function in library

Cobol

cob2 -v -o test -qdll test.cbl MYLIB.x

produces dynamically linked test executable