Must be possible to build project on C-file basis

[powerbroker]

to compile e.g. AutoCheck.c it is necessary to set up a context where "TransistorTester.h" is forcibly-included and MAIN_C macro(from main.c) is defined. otherwise compilation fails and build does not accomplish.

by default, c project is compiled on compilation unit('.c'-file) basis, and linked from compiled objects into executable. so, separate compiling of each compilation unit('.c'-file) is possible.

required header files - e.g. "Transistortester.h" - must be explicitly referenced from compilation units("AutoCheck.c") with "#include" directive. there must be no artificial obstacles preventing compilation of e.g. ("AutoCheck.c") out of another compilation unit - "main.c" context, like "#if defined (MAIN_C) ... #endif" in referenced "Transistortester.h"