"Bharati Bhole" <bharati.bhole@xxxxxxxxx> writes: > There is no build/gencondmd.c. there is insn-conditions.c though. Sorry, you're right, that is how it used to work. That's not how it works now. > And insn-conditions.c is genrated by genconditions and its .o file is > liked with genrecog. > The problem is that, genconditions.c contains main() and genrecog.c > also contains main() (and there is extern declaration main() in > genrecog.c) so when the files are linked which main() is called 1st. If two objects file define the same symbol, you can't link them together. So it is safe to conclude that genconditions.o and genrecog.o are not linked together. What happens is that genconditions.o is linked into genconditions, which generates insn-conditions.c, which is compiled into insn-conditions.o. And insn-conditions.o is linked with genrecog.o to produce genrecog (and insn-conditions.o is also linked into other gen* programs). > And what macro IN_GCC does? It indicates whether the file is being compiled in gcc tiself or in a helper program such as genrecog. > Please tell me the starting point of the exe file genrecog. It starts at main, of course. Ian
