diff options
Diffstat (limited to 'gcc/c-family/c-target.def')
| -rw-r--r-- | gcc/c-family/c-target.def | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gcc/c-family/c-target.def b/gcc/c-family/c-target.def index c5ebdf14ac4..c2025ab76b7 100644 --- a/gcc/c-family/c-target.def +++ b/gcc/c-family/c-target.def @@ -1,6 +1,6 @@ /* Target hook definitions for C-family front ends. Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, - 2011 + 2011, 2012 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it @@ -89,5 +89,20 @@ DEFHOOK @var{format_arg} is one recognized as a valid string reference type.", void, (tree format_arg, tree args_list), NULL) + +DEFHOOK +(c_preinclude, + "Define this hook to return the name of a header file to be included at\ + the start of all compilations, as if it had been included with\ + @code{#include <@var{file}>}. If this hook returns @code{NULL}, or is\ + not defined, or the header is not found, or if the user specifies\ + @option{-ffreestanding} or @option{-nostdinc}, no header is included.\n\ +\n\ + This hook can be used together with a header provided by the system C\ + library to implement ISO C requirements for certain macros to be\ + predefined that describe properties of the whole implementation rather\ + than just the compiler.", + const char *, (void), + hook_constcharptr_void_null) HOOK_VECTOR_END (C90_EMPTY_HACK) |
