[RFC] Fight dependencies in C front end on middle-end include files

[Joseph S. Myers]

On Sat, 15 May 2010, Steven Bosscher wrote:

> OK after fixing the Makefile stuff, which I of course completely
> forgot about until a minute ago, while writing this e-mail? :-)

The C front-end changes (changes to c-*) are OK.

> Index: gcc/c-cppbuiltin.c
> ===================================================================
> --- gcc/c-cppbuiltin.c	(revision 159418)
> +++ gcc/c-cppbuiltin.c	(working copy)

> +#include "tm_p.h"		/* For TARGET_CPU_CPP_BUILTINS & friends.  */

TARGET_CPU_CPP_BUILTINS should probably be C-family hooks (hooks in 
targetcm rather than targetm, underlying functions defined in 
target-specific C-family-specific source files) - or, eventually, 
languages-using-preprocessor hooks (the Fortran front end has 
commented-out code to use them).

> Index: gcc/c-pragma.c
> ===================================================================
> --- gcc/c-pragma.c	(revision 159418)
> +++ gcc/c-pragma.c	(working copy)

> +#include "tm_p.h"		/* For REGISTER_TARGET_PRAGMAS (why is
> +				   this not a target hook?).  */

Again, should probably be a C-family hook.  targetcm is a lot more recent 
(2007) than the original target structure (2001).

-- 
Joseph S. Myers
joseph@codesourcery.com