I try to use the "PL/I for Windows"-Compiler from RDz 8.0.3 with nmake. The most compile-time enviroment variable start with IBM. (ex.: IBM.SOURCE. Nmake however does not accept macros with a dot.
IBM.SOURCE = ./src
fails with syntax error : illegal character '.' in macro
How to solve this dilema? Is there another char instead the dot, eg,: IBM_SOURCE ?