Using C++ on the MRM

I like programming in C++, so I created a small sample file which allows C++ to be used on the MRM. As distributed, the MotoRobots library gives a couple of linker errors when trying to utilize C++.

Newlib (the C runtime library that is used) makes some calls to getpid and kill as part of the exception handler which wraps the call to main. Obviously these functions can't do anything useful if you aren't running an OS on your MRM, so I wrote some simple stubs.

If you wish to use any functions from the standard C++ library, then add

     -lstdc++

to the EXE_LIBS, and add

     -L/usr/local/gcc-m68k/lib/gcc-lib/m68k-elf/2.95.3\mcpu32 \
     -L/usr/local/gcc-m68k/lib/gcc-lib/m68k-elf/2.95.3 \
     -L/usr/local/gcc-m68k/m68k-elf/lib/mcpu32 \
     -L/usr/local/gcc-m68k/m68k-elf/lib

to EXE_LIBDIRS. NOTE: Adding a simple

     cout << "Hello World\n";

to the main program causes the size of the .s19 file to increase by 200k, so I've avoided using C++ streams.

Here are the files:

Makefile Used to build Program.s19
OS-Support.c Provides kill and getpid stubs
Program.exe Executable (generated0
Program.num Symbol table (generated)
Program.s19 S-Record file(generated) This is what gets downloaded to the MRM
func.cpp Sample C++ class
func.h Header file for sample C++ class
main.cpp Simple main program
Sample.zip ZIP file containing Makefile and source files

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