Makefile for C++ needed

[Henk van Winkoop]

Hello,

where to start to create a new makefile, or copy/modify an existing
makefile, for compiling C++ programs?

I'm using 'ProgrammersNotepad2' that uses:
avr-gcc.exe (I think it's a stripped version of 'gcc.exe'?)
for compiling AVR programs.
Now I want to use C++ for AVR programs.
I altered the makefile line:
CC = avr-gcc
to:
CC = avr-g++
that compiles classes ok but
shows error:
***No rule to make target .....
so there's more to change....

Any hints?

thanks

Henk