ozcy:
excuse me for my ignorance... but i use the arduino Java gui + avr-gcc compiler on linux. My problem is that I don't know in which folder the code is compiled and builder. I don't know where i can find the avr-objdump too. Is an executable on my system? Is another program?.
If you go to preferences and enable verbose compilation, the IDE will tell you everything it does. That will contain the name of the temporary directory in which it compiles stuff. avr-objdump is part of avr-binutils
On the other hand. In which part of the source code can I find that? Must I download the source code for linux for example, open the tarball and look over there?
All the source code for the arduino library functions is in the arduino directory, under hardware/arduino/cores/arduino
Or here: https://github.com/arduino/Arduino/tree/master/hardware/arduino/cores/arduino