diff options
Diffstat (limited to 'misc/sys')
| -rw-r--r-- | misc/sys/cdefs.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h index 1ced090251..096dc3d6c8 100644 --- a/misc/sys/cdefs.h +++ b/misc/sys/cdefs.h @@ -26,7 +26,17 @@ #ifdef __GNUC__ -# define __P(args) args /* GCC can always grok prototypes. */ +/* GCC can always grok prototypes. For C++ programs we add throw() + to help it optimize the function calls. But this works only with + gcc 2.8.x and egcs. */ +# if defined __cplusplus && __GNUC_MINOR__ >= 8 +# define __P(args) args throw () +# else +# define __P(args) args +# endif +/* This macro will be used for functions which might take C++ callback + functions. */ +# define __PMS(args) args # define __DOTS , ... #else /* Not GCC. */ @@ -36,6 +46,7 @@ # if (defined __STDC__ && __STDC__) || defined __cplusplus # define __P(args) args +# define __PMS(args) args # define __const const # define __signed signed # define __volatile volatile @@ -44,6 +55,7 @@ # else /* Not ANSI C or C++. */ # define __P(args) () /* No prototypes. */ +# define __PMS(args) () # define __const /* No ANSI C keywords. */ # define __signed # define __volatile |