Hello everyone. I'm trying to instrument GCC to log reads of the variables inside global_options. I managed to implement a (dumb) version of this by wrapping all references of those variables with a inline function, contained inside gcc/system.h. To speed things up, I want to log only reads where the current value is not the same of the previous one. After some frustrated attempts with global variables, I'm now using a singleton (class/members declared in system.h, implemented in a new file) to store previous values and log the access if needed. Now I need to compile this new file, and add the resulting object file as input to the compilation of the instrumented source files. Looking at the documentation, I guess that I need to edit gcc/Makefile.in. However, I don't know exactly what to edit - can you guys give me some pointers? Ps: other implementation ideas are also welcome :) Thanks, Mateus
