diff options
Diffstat (limited to 'include/ansidecl.h')
| -rw-r--r-- | include/ansidecl.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/ansidecl.h b/include/ansidecl.h index 545a62103a9..88187be6786 100644 --- a/include/ansidecl.h +++ b/include/ansidecl.h @@ -161,6 +161,15 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #endif /* ANSI C. */ +/* This is for GCC, which has historically used typed null pointer + constants. It needs to be here so it is seen by headers included + by gcc's config.h. + + FIXME: GCC probably doesn't need to use typed nulls anymore. + Clean it up, then remove this. Ware variable-argument functions. */ +#ifdef IN_GCC +# define NULL_PTR ((PTR) 0) +#endif /* Using MACRO(x,y) in cpp #if conditionals does not work with some older preprocessors. Thus we can't define something like this: @@ -230,4 +239,23 @@ So instead we use the macro below and test it against specific values. */ #define __extension__ #endif +/* Bootstrap support: Autoconf will possibly define the `inline' or + `const' keywords as macros, however this is only valid for the + stage1 compiler. If we detect a modern version of gcc, + unconditionally reset the values. This makes sure the right thing + happens in stage2 and later. We need to do this very early; + i.e. before any header files that might use these keywords. + Otherwise conflicts might occur. */ + +#if (GCC_VERSION >= 2007) +# ifdef __STDC__ +# undef const +# endif +# undef inline +# define inline __inline__ /* __inline__ prevents -pedantic warnings */ +# ifndef HAVE_LONG_DOUBLE +# define HAVE_LONG_DOUBLE 1 +# endif +#endif /* GCC >= 2.7 */ + #endif /* ansidecl.h */ |