Help needed: banishing RTL from the front ends

[Paolo Bonzini]

On 05/25/2010 09:55 AM, Steven Bosscher wrote:
> 1) Group front end objects in Makefile.in under e.g. ALL_HOST_FRONTEND_OBJS
> 2) Add a new build rule that adds an extra define -DIN_GCC_FRONTEND
> 3) Conditionally poison symbols in system.h
>
> For the last step, that would be e.g.:
> #ifdef IN_GCC_FRONTEND
> #pragma GCC poison GCC_RTL_H GCC_REGS_H ...
> #endif
>
> Unfortunately, my Makefile-fu is insufficient to do step 2. There is
> an implicit rule ".c.o:" that triggers no matter what I try, and I
> don't want to add explicit $(COMPILER) rules for all the front end
> objects.

$(ALL_HOST_FRONTEND_OBJS): ALL_CFLAGS += -DIN_GCC_FRONTEND

?

Paolo